OPTIMUM CRYPTO

►Part -3 21. Which of the following is wrong about ecosystem? A.Freshwater habitats are independent of terrestrial habitats. B.An ecosystem consists of biotic and abiotic factors. C.Clearing a forest would reduce the amount of energy available to the consumers. D. While an understanding of the interactions between organisms and their environment was very important to early hunter and gatherer humans, it is even more important today because humans are having significant effects on the environment. 22. ‘Biodiversity’ is described as: A. The range of different species in an environment B. The seasonal and daily changes in an environment C. The way species differ from one another D. The influence of physical factors on an environment 23. Rabbits are important grazers, maintaining some important grassland habitats. If another catastrophe were to reduce rabbit populations what would happen? A. Important grassland butterflies would be lost B. There would be more grass for the surviving rabbits C. The grassland would be invaded by trees and shrubs D. All of the above 24._________ is a region were there is a high plant species richness, but don't have high mamal species richness . A. Sina desert of Egypt B. Fybos of South Africa C. Afar region of Ethiopia D. Green land 25. All of the following crops have thier center of genetic diversity in Ethiopia except A. Ricinus communist B. Linum usitatissimum C. Herdeum spp D. Cyprus rotundes ንስር Academy ❗️ 🦅ከፍ እንደ ንስር! 🔗SHARE 🔗SHARE ╔════════════╗ 📚JOIN: @Neser_Academy 📚JOIN: @Neser_Academy ╚════════════╝ ⇲

►Part-2 11. Which statement best describes the flow of energy and the movement of chemical compounds in an ecosystem? A. Energy flows into living organisms and remains there, while chemical compounds are transferred from organism to organism. B. Chemical compounds flow in one direction in a food chain and energy is produced. C. Energy is transferred from organism to organism in a food chain and chemical compounds are recycled. D. Energy flows out of living organisms and is lost, while chemical compounds remain permanently inside organisms. 12. Some bloodsucking insects insert their mouthparts directly into a blood vessel and withdraw blood. Other bloodsucking insects have mouthparts that cut through the skin and blood vessels and produce a small pool of blood from which they feed. Both mouthpart types are specialized for A. autotrophic nutrition B. heterotrophic nutrition C. regulation D. excretion 13. Which change describes a demographic transition? a. a population moves from a high birthrate and death rate to a high birthrate and low death rate. b. a population moves from a high birthrate and low death rate to a low birthrate and death rate. c. a population moves from a low birthrate and death rate to a low birthrate and high death rate. d. a population moves from a high birthrate and death rate to a low birthrate and low death rate. 14.Which of the following does not affect the spatial distribution of a population? a. the carrying capacity of a population b. the distribution of food and other resources c. abiotic conditions like rainfall and sunlight d. the existence of predators or parasites 15. Young adult male chimpanzees look for mates outside their own population. The males then take the females back to their group. Which of the following occurs in females' original population? a. emigration b. immigration c. mortality d. natality 16. . Which event is correlated with the beginning of exponential growth in human population? a. the start of the Industrial Revolution b. the invention of agriculture c. the bubonic plague epidemic d. the end of the Second World War 17. If two species are competing for the same resources, one will be more successful and the other will be extinct.This priceple is called ____. A. Inter specific competition principle B. Intera specific competition principle C. Competitive exclusion principle D. Inclusive competition principle 18. Ecology is the study of the interaction of living organisms a. with each other and their habitat. b. and their communities. c. with each other and their physical environment. d. and the food they eat. 19.The physical location of an ecosystem in which a given species lives is called a a. habitat. b. tropical level. c. niche. d. biotic zone. 20. Which of the following would not be included in a description of an organism's niche? a. its trophic level b. its color c. the humidity it prefers d. when it reproduce ንስር Academy ❗️ 🦅ከፍ እንደ ንስር! 🔗SHARE 🔗SHARE ╔════════════╗ 📚JOIN: @Neser_Academy 📚JOIN: @Neser_Academy ╚════════════╝ ⇲

BIOLOGY -Grade 12-UNIT 2 ►Part-1 1.Similarity of one biome to another may be due to a. altitude. b. latitude. c. altitude and latitude, only. d. altitude, latitude, and longitude. 2.The only one of the following characteristics that all deserts have in common is a. low rainfall amounts. b. heat. c. sand. d. lack of vegetation. 3.A biome with grasses as primary producers and shrubs and scattered trees adapted to prolonged dry spells is known as a a. warm desert. b. savanna. c. tundra. d. taiga. 4.The biome with the greatest diversity of life is a. temperature deciduous forest. b. taiga. c. tropical rain forest. d. grassland. 5.Which biome is characterized by plants whose leaves drop off in the wintertime? a. coniferous forest b. tundra c. Temperate deciduous forest d. tropical rain forest 6.Estuaries often exhibit a great degree of species diversity because a. the water movement is more stable to allow species diversity exist. b. many species of the open ocean spend a portion of their life cycles in estuarine waters. c. there is a continued upwelling of nutrients. d. saltwater and freshwater species are present, plus many species of invertebrates and fishes that spend their early life stages here. 7.Which factor would have the greatest effect on the flow of energy into an ecosystem? A. a large decrease in the amount of sunlight available B. a large increase in the number of carnivores C. a small increase in the number of decomposers D. a small decrease in the amount of minerals available 8. Some of the energy taken in by an organism is not available to other organisms in a food web. Energy that is not available to other organisms in a food web is energy that is A. stored in the remains of a dead animal B. lost to the environment as heat C. stored in eggs produced during sexual reproduction D. produced in muscle tissue during the growth of an organism 9. A stable ecosystem would not contain A. materials being cycled B. consumers without producers C. decomposers D. a constant source of energy 10. Abiotic factors that characterize a forest ecosystem include A. light and biodiversity B. temperature and amount of available water C. types of producers and decomposers D. pH and number of heterotrophs ንስር Academy ❗️ 🦅ከፍ እንደ ንስር! 🔗SHARE 🔗SHARE ╔════════════╗ 📚JOIN: @Neser_Academy 📚JOIN: @Neser_Academy ╚════════════╝ ⇲

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Answer for Civics Unit-3 ►Part 2 6. Multi culturalism doctrine is important for Ethiopia because : A. It let's a given society confiscate their culture. B. It allows citizens to participate in multi party system C. It makes citizens respect each other without jeopardize the social pieces and stability. D. It creates an opportunity for the celebration of nation and nationalities day. Answer:C Multiculturalism means living together to respect others languages,religion and way of life.It is based on the belief that all cultures,religions and languages are equal. 7. One of the following is not the factor for armed resistance of peasants over imperial regime, which one ? A. They were suffered for mal- administration and corruption B. They tholed for lack of social service C. They were forced to pay heavy tax D. They were forced to accept the ideology of Feminism. Answer:D The factors for the armed resistance were mal administration, corruption, force to pay heavy tax ,lack of social service. 8. The mains center of Gojam peasant rebellion were A. Welqayt and Tagede B. Mota and Dega Damot C. Raya and Azabo D. Bale and showa Answer :B The main center of Gojam rebellion were Mota &Dega Damot. 9. Which imperial rebellion did take place after libration of Ethiopia from Italy occupation ? A. 1st woyane movement B. Gojam peasant rebellion C.2nd woyane movement D. Bale peasant movement Answer :A 1st woyane movement took place in Tigray after the liberation of Ethiopia from Italian occupation in 1941. Gojam peasant rebellion 1968. Bale peasant rebellion (1963 -1970). 10._________ is the social study of humanity, mainly using culture as its method. A. Anthropology B. Culture relativism C. Value D. Norm Answer :A Anthropology -study about culture. 11. Which one of the following is incorrect about the bale peasant rebellion. A. Religious discrimination was the aggravating factor of it. B. It was encouraged by Somalia propaganda. C. It was the first rebellion to overthrow the battle D. It center was Elkere . Answer :C Bale peasant rebellion was vanquished by British support. ንስር Academy ❗️ 🦅ከፍ እንደ ንስር! 🔗SHARE 🔗SHARE ╔════════════╗ 📚JOIN: @Neser_Academy 📚JOIN: @Neser_Academy ╚════════════╝ ⇲

Answer for Civic Unit - 3 ►Part 1 1. _ is/are the principle equality which implies equal protection of citizen before law? A. Universal suffrage B. Legal equality C. Burden and benefit D. Equity Answer :B 2. Which movement had significantly contributed to prevalence of gender Equality ? A. Sexism B. Feminism C. EWLA D. Masculism Answer :B Sexism : is a discrimination based on sex Feminism : A social theory or political movement arguing that legal and social restrictions on females must be removed in order to bring about equality of both sexes in all aspects of public and private life. EWLA ( Ethiopian woman lawyers association) : is am organization rather than movement Masculism : Support for male domination of women, for patriarchy; opposition to equality for women; anti-feminism. 3. What is the government mandate in taking action of promoting common good ? A. Priority is given for individual interest. B. The government authorize the rife of public interest and deliberately overlook over look individual interests . C. There is a desire to promote common good more than individual interest. D. Authorizing the impose of public interest is not mandate of a government. Answer:C Public interest= common good 4. Which one is incorrect about affirmative action? A. It promote reverse discrimination. B. It is policy of helping formally disadvantaged groups C. It doesn't follow the principle of equality D. It compensates the past discriminated group to be for dominant over discriminating group . Answer:D Affirmative actions are aimed at compensating past injustice and discrimination and understood as reverse discrimination. 5. What was the motto of Ethiopian student movement? A. Land to tiller B. Edget Be Hbret C. Stop Military Junta D. No more hesitation for emperial régime Answer:A The motto of Ethiopian students movement was "Land to the Tiller!". ንስር Academy ❗️ 🦅ከፍ እንደ ንስር! 🔗SHARE 🔗SHARE ╔════════════╗ 📚JOIN: @Neser_Academy 📚JOIN: @Neser_Academy ╚════════════╝ ⇲

Answer for chemistry Unit-2 1. Assume you are listening bisrat FM 101.1 MHz live football streaming by host of Mesele Mengistu. Find the wave length of these radio wave ? A. 3m B.300nm C. 1.5m D. 1500 nm Answer : A C=ለ×f ለ=C/f =3×10^8/101.1×10^6 =0.0296 ×10²=3m 2. Which electron excitation have the lowest quantum of energy? A. ni=1 and nf=2 B. ni=2 and nf=3 C. ni=3 and nf=4 D. ni=5 and nf=6 Answer :D as quantum number increases ,quantum energy decreases! 3. There is a minimum frequency needed to emits silver electrons with specfic light of wave length 400nm.and atinstant it emit its electron by blue light of wave length 700nm .What is its kenetic energy ? A.1.65 ×1^-17j B. 8.24×10^18 j C. 1.2×10^-19 j D. 5× 10^-20 j Answer : D 4.One of the following have a high electro magnetic radiation , which one? A. Alpha particles B. Betta particles C. Gamma rays D. X rays Answer:C Gamma > X ray Note that particles don't have EMR nature 5. Calculate the wave length of a silver electron that is emitted by certain light wave ? A. 1.2×10-¹¹m B. 2.4 ×10-¹²m C. 6×10-¹³ m D. 645nm Answer:B Mc²=hc/ለ ለ=h/MeC =6.26×10^-34/9.11×10-³¹(3×10^8 = 0.24×10-¹¹ 6. Which one the following is true about position and location of electron ? A. We can find the position and direction of electron at instant time around the orbit? B. The position of Valance electrons are determineable while the inner is impossible. C. The position of electron fixed at its orbital state D. The spontaneous determination of electrons' position is impossible. Answer:D Remember Heisenberg uncertainty principle . 7.Which of the following was discovered by using alpha scattering experiment ? A.Electron B.Neutron C.Proton D. Nucleus Answer:D Nucleus was discovered by E.Rutherford using alpha scattering experiment 8.Which one of the following electron configuration principle is correctly matched with its ideology? A. Aufbau principle States that each of 2p orbitals will hold a single electron before any of them receive the second electron. B. Pauli exclusion principle- no two electrons can have the same quantum number ? C. Hindus principle- electrons occupy the lowest energy orbital. D. Pauli's exclusion principle:electrons occupy the lowest energy orbital before entering the higher energy orbital Answer:B Aufbau principle -electron occupy the lowest energy orbital Hund's principle -equal energy orbitals are each occupied by a single electron before the second electron of opposite spin enters the orbital Pauli exclusion Principe -no two electrons can have the same 4 quantum number. 9. One of the following decrease as we go down the group? A.Electron affinity B.Atomic size C.Metallic character D. Atomic radius Answer:A Electron affinity decrease down agroup 10.Which one is not radioactive element? A.Ra B.C C.Ag D.N Answer:C Radioactivity is the spontaneous emission of radiation from unstable nuclei of certain isotopes Example of radioactive element are Cr,Ra,C,N,U ንስር Academy ❗️ 🦅ከፍ እንደ ንስር! 🔗SHARE 🔗SHARE ╔════════════╗ 📚JOIN: @Neser_Academy 📚JOIN: @Neser_Academy ╚════════════╝ ⇲

Answer for Maths unit-2 1. Which of the following rational expression is correctly decomposed to its partial fraction ? A. x³-1/x²-1=x+1/x+1 B. 2x/x²-3x+2=2/x-2 - 2/2x-2 C. 3x-1/x²+5= 3x-1/x²+5 D. x²-5x+12/x²-4= 4/x+2 + 1/x-2 Answer:C 2. Which of the following is correct about the graph of f(x)=2x-2/x²-1 ? A. It has vertical asymptote at X=-1. B. It has a vertical asymptote namely x=-1 and x=1. C. Its oblique asymptote intersection point is (x,1/x+1). D. It has Horizontal asymptote at y=2 Answer:A 2x-2/x²-1 = 2(x-1)/(x+1)(x-1) =2/x+1 So V.A ,X=-1 H.A ,y=0 had no oblique asymptote. 3. Of the following function, which one is the wrong statement? f(x)= x²-9/x³+4x² -8 ? A. Its intersecting line at its horizontal asymptote is x=3 and x=-3. B. Its intersecting point at its vertical asymptote is y= -4 . C. The graph of f(x) doesn't have a hole. D. It has a horizontal asymptote at y=0. Answer:B f(x)= x²-9/x³+4x² -8 At horizontal asymptote y= 0 0=(x+3)(x-3)/x³+4x²-8 0=(x+3)(x-3) x=-3 and x=3 At vertical asymptote x²-9/(x+2)(x²+2x-4) X=-2 is V.A So f(-2) not equals to 4. It is undefined 4. What are the zero values of f(x)=2x²+x-6/x²+2x A. x=3/2 B. x=2 C.x=1/2 D. x=0 and x=-2 Answer:A Factorize 2x² +x-6 =(2x-3)(x+2) f(x)=2x²+x-6/x²+2x = (2x-3)(x+2)/x(x+2) =2x-3/x The zero value for this function : 2x-3=0 x=3/2 ንስር Academy ❗️ 🦅ከፍ እንደ ንስር! 🔗SHARE 🔗SHARE ╔════════════╗ 📚JOIN: @Neser_Academy 📚JOIN: @Neser_Academy ╚════════════╝ ⇲

Chemistry -unit -2 1. Assume you are listening bisrat FM 101.1 MHz live football streaming by host of Mesele Mengistu. Find the wave length of these radio wave ? A. 3m B.300nm C. 1.5m D. 1500 nm 2. Which electron excitation have the lowest quantum of energy? A. ni=1 and nf=2 B. ni=2 and nf=3 C. ni=3 and nf=4 D. ni=5 and nf=6 3. There is a minimum frequency needed to emits silver electrons with specfic light of wave length 400nm.and atinstant it emit its electron by blue light of wave length 700nm .What is its kenetic energy ? A.1.65 ×1^-17j B. 8.24×10^18 j C. 1.2×10^-19 j D. 2.13×10^-19 4.One of the following have a high electro magnetic radiation , which one? A. Alpha particles B. Betta particles C. Gamma rays D. X rays 5. Calculate the wave length of a silver electron that is emitted by certain light wave ? A. 1.2×10-¹¹m B. 2.4 ×10-¹²m C. 6×10-¹³ m D. 645nm 6. Which one the following is true about position and location of electron ? A. We can find the position and direction of electron at instant time around the orbit? B. The position of Valance electrons are determineable while the inner is impossible. C. The position of electron fixed at its orbital state D. The spontaneous determination of electrons' position is impossible. 7.Which of the following was discovered by using alpha scattering experiment ? A.Electron B.Neutron C.Proton D. Nucleus 8.Which one of the following electron configuration principle is correctly matched with its ideology? A. Aufbau principle States that each of 2p orbitals will hold a single electron before any of them receive the second electron. B. Pauli exclusion principle- no two electrons can have the same quantum number ? C. Hindus principle- electrons occupy the lowest energy orbital. D. Pauli's exclusion principle:electrons occupy the lowest energy orbital before entering the higher energy orbital 9. One of the following decrease as we go down the group? A.Electron affinity B.Atomic size C.Metallic character D. Atomic radius 10.Which one is not radioactive element? A.Ra B.C C.Ag D.N ንስር Academy ❗️ 🦅ከፍ እንደ ንስር! 🔗SHARE 🔗SHARE ╔════════════╗ 📚JOIN: @Neser_Academy 📚JOIN: @Neser_Academy ╚════════════╝ ⇲

Civics - Unit - 3 1. _ is/are the principle equality which implies equal protection of citizen before law? A. Universal suffrage B. Legal equality C. Burden and benefit D. Equity 2. Which movement had significantly contributed to prevalence of gender Equality ? A. Sexism B. Feminism C. EWLA D. Masculism 3. What is the government mandate in taking action of promoting common good ? A. Priority is given for individual interest. B. The government authorize the rife of public interest and deliberately overlook over look individual interests . C. There is a desire to promote common good more than individual interest. D. Authorizing the impose of public interest is not mandate of a government. 4. Which one is incorrect about affirmative action? A. It promote reverse discrimination. B. It is policy of helping formally disadvantaged groups C. It doesn't follow the principle of equality D. It compensates the past discriminated group to be for dominant over discriminating group . 5. What was the motto of Ethiopian student movement? A. Land to tiller B. Edget Be Hbret C. Stop Military Junta D. No more hesitation for emperial régime 6. Multi culturalism doctrine is important for Ethiopia because : A. It let's a given society confiscate their culture. B. It allows citizens to participate in multi party system C. It makes citizens respect each other without jeopardize the social pieces and stability. D. It creates an opportunity for the celebration of nation and nationalities day. 7. One of the following is not the factor for armed resistance of peasants over imperial regime, which one ? A. They were suffered for mal- administration and corruption B. They tholed for lack of social service C. They were forced to pay heavy tax D. They were forced to accept the ideology of Feminism. 8. The mains center of Gojam peasant rebellion were A. Welqayt and Tagede B. Mota and Dega Damot C. Raya and Azabo D. Bale and showa 9. Which imperial rebellion did take place after libration of Ethiopia from Italy occupation ? A. 1st woyane movement B. Gojam peasant rebellion C.2nd woyane movement D. Bale peasant movement 10._________ is the social study of humanity, mainly using culture as its method. A. Anthropology B. Culture relativism C. Value D. Norm 11. Which one of the following is incorrect about the bale peasant rebellion. A. Religious discrimination was the aggravating factor of it. B. It was encouraged by Somalia propaganda. C. It was the first rebellion to overthrow the battle D. It center was Elkere . ንስር Academy ❗️ 🦅ከፍ እንደ ንስር! 🔗SHARE 🔗SHARE ╔════════════╗ 📚JOIN: @Neser_Academy 📚JOIN: @Neser_Academy ╚════════════╝ ⇲

Figures for 5th and 6th questions

Physics workout questions on WORK page 2 1. A horizontal force of 5 N is required to maintain a velocity of 2 m/s for a block of 10 kg mass sliding over a rough surface. Calculate the work done by this force in one minute. 2. A box of mass 1 kg is pulled on a horizontal plane of length 1 m by a force of 8 N then it is raised vertically to a height of 2m, Find the net work done 3. A 10 kg satellite completes one revolution around the earth at a height of 100 km in 108 minutes. The work done by the gravitational force of earth will be 4.A force of 100N is required to stretch a spring that obeys Hook’s law by 100cm. What is the work done in stretching the spring? 5. A ball is thrown on a frictionless wire with a speed of 10m/s at ‘h’ and a ball slides without friction around a loop-the- loop as shown below. The ball is thrown from h=2.5R. Find its speed at point A. 6. A 7.26-kg bowling ball hangs from the end of a 2.5-m rope. The ball is pulled back until the rope makes a 45° angle with the vertical. Find the gravitational potential energy of the system? ንስር Academy ❗️ 🦅ከፍ እንደ ንስር! 🔗SHARE 🔗SHARE ╔════════════╗ 📚JOIN: @Neser_Academy 📚JOIN: @Neser_Academy ╚════════════╝ ⇲

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Physics workout questions on WORK and KINETIC ENERGY 1,A force of 25.0 Newtons is applied so as to move a 5.0 kg mass a distance of 20.0 meters. How much work was done? 2, A force of 120 N is applied to the front of a sled at an angle of 28.0 above the horizontal so as to pull the sled a distance of 165 meters. How much work was done by the applied force? 3,A sled, which has a mass of 45.0 kg., is sitting on a horizontal surface. A force of 120 N is applied to a rope attached to the front of the sled such that the angle between the front of the sled and the horizontal is 35.0º. As a result of the application of this force the sled is pulled a distance of 500 meters at a relatively constant speed. How much work was done to this sled by the applied force? 4,A rubber stopper, which has a mass of 38.0 grams, is being swung in a horizontal circle which has a radius of R = 1.35 meters. The rubber stopper is measured to complete 10 revolutions in 8.25 seconds. a. What is the speed of the rubber stopper? b. How much force must be applied to the string in order to keep this stopper moving in this circular path at a constant speed? c. How far will the stopper move during a period of 25.0 seconds? d. How much work is done on the stopper by the force applied by the string during 25.0 seconds? 5,How much work would be required to lift a 12.0 kg mass up onto a table 1.15 meters high? 6,A barge is being pulled along a canal by two cables being pulled as shown below. The tension in each cable is T =14,000 N and each cable is being pulled at an angle = 18.0 relative to the direction of motion as shown. How much work will be done in pulling this barge a distance of 3.0 kilometers? 7,A car, which has a mass of 1250 kg is moving with a velocity of 26.0 m/sec. What is the kinetic energy of this car? 8,What will be the kinetic energy of a bullet, which has a mass of 22.0 grams, moving with a velocity of 650 m/sec.? 9,How fast must a 4.40 kg bowling ball move in order to have a kinetic energy of 185 Joules? 10,A ball, which has a mass of 2.40 kg., is dropped from the top of a building 96.0 meters tall. a. How long will it take for this ball to reach the ground? b. What will be the velocity of the ball just as it reaches the ground? c. What will be the kinetic energy of the ball just as it reaches the ground? d. How much work would be needed to lift this ball back up to the top of the building at a constant speed? ⌛ነገ መልሶቹን ከሙሉ ማብራሪያ ጋር ይዘን የምንቀርብ ይሆናል። ንስር Academy ❗️ 🦅ከፍ እንደ ንስር! 🔗SHARE 🔗SHARE ╔════════════╗ 📚JOIN: @Neser_Academy 📚JOIN: @Neser_Academy ╚════════════╝ ⇲

English Grammar 1. Student A : I was tricked 5birr for registration of educational channel. Student B : They _be Right WaY Academy. They are real and honest. A. Mustn't B. Had to be C. didn't have to be D. Couldn't Answer:D Mean that I am sure that they are not RWA Student B is trying to conclude the honesty of RW Academy. 2. I am sure that he has a car .This statement have equivalent meaning with A. He must have a car. B. He could have a car. C. He might have a car. D. He should have a car. Answer:A Positive deductions are expressed by must and have to . 3.[Conceptual] 1, She must come here 2, She may come here 3, Here she comes 4, She could come here . What is the increasing order of probability of the above sentences? A, 3,4,1,2 B. 4,2,3,1 C.3,4,2,1 D. 4,2,1,3 Answer:D Could=might=30% probable May = 50% probable Must =95 % deduction Here she comes (100℅ certain) As the question is asking increasing order the correct answer is D 4. My father warned me.I stop using telegram. A. have to B. Must C. Should D. Ought to Answer:A Here there is external obligation from my father thus 5. You __look up the meaning of every word in the dictionary. You can guess contextually. A. don't have to B. Won't have to C. Must not D. didn't need to Answer :A (mean that it is not necessary to check ........... ) don't have to = need not Advice :It is better to use contextual meaning rather than finding meanings on dictionary! 6. Mr A : She told me that she is the hosts # time on kana TV. Mr B : Ohh, she ____ Danit Mekbeb. A. Is B. Could be C. Must be D. Have to be Answer:C Mean that I am sure that she is Danit Mekbeb.It is known that the hosts of # time is Danit Mekbeb. 7. I a mobile card ,because I had enough amount . A. need not have bought B. Need buying C. did not need to buy D. Need not buy Answer:C Here : ........I had enough amount- indicates I hadn't bought./I don't need to buy did not need to= the action was not necessary, so it wasn't done. So did not need to used in this occasion. 8. I _ this channel recently. It was better if I created it 3 months ago A. Shouldn't have create B. Created C. don't have to create D. Should have created Answer:D Should + have +V3 ....indicate an action done wrongly in the past I was wrong because I didn't created this channel long time ago. 9. Students ____ to do this test for 10 minutes. ( written at the entry instruction of a test). A. are permitted B. have C. Are going D. are too busy Answer:A Rules and instructions are expressed by allowed or permitted! 10. Which of the following sentence is wrong ? A. Are you hearing what the people are talking ? B. Can you hear what the people are talking? C. I can't understand what you are talking? D. I don't understand what you are talking? Answer:A State verb describe a state rather than action. Aren't usually used in present continuous form. Example of state verb are love, hate,want, see,hear,smell .... ንስር Academy ❗️ 🦅ከፍ እንደ ንስር! 🔗SHARE 🔗SHARE ╔════════════╗ 📚JOIN: @Neser_Academy 📚JOIN: @Neser_Academy ╚════════════╝ ⇲

Maths - Unit 2 - Grade 11 1. Which of the following rational expression is wrongly decomposed to its partial fraction ? A. x³-1/x²-1=x+1/x+1 B. 2x/x²-3x+2=4/x-2 - 1/x-1 C. 3x-1/x²+5= 3x-1/x²+5 D. x²-5x+12/x²-4= 4/x+2 + 1/x-2 2. Which of the following is correct about the graph of f(x)=2x-2/x²-1 ? A. It has vertical asymptote at X=-1. B. It has a vertical asymptote namely x=-1 and x=1. C. Its oblique asymptote intersection point is (x,1/x+1). D. It has Horizontal asymptote at y=2 3. Of the following function, which one is the wrong statement? f(x)= x²-9/x³+4x² -8 ? A. Its intersecting line at its horizontal asymptote is x=3 and x=-3. B. Its intersecting point at its vertical asymptote is y= -4 . C. The graph of f(x) doesn't have a hole. D. It has a horizontal asymptote at y=0. 4. What are the zero values of f(x)=2x²+x-6/x²+2x A. x=3/2 B. x=2 C.x=1/2 D. x=0 and x=-2 ንስር Academy ❗️ 🦅ከፍ እንደ ንስር! 🔗SHARE 🔗SHARE ╔════════════╗ 📚JOIN: @Neser_Academy 📚JOIN: @Neser_Academy ╚════════════╝ ⇲

English Grammar 1. Student A : I was tricked 5birr for registration of educational channel. Student B : They be Right WaY Academy. They are real and honest. A. Mustn't B. Had to be C. didn't have to be D. Couldn't 2. I am sure that he has a car .This statement have equivalent meaning with A. He must have a car. B. He could have a car. C. He might have a car. D. He should have a car. 3.[Conceptual] 1, She must come here 2, She may come here 3, Here she comes 4, She could come here . What is the increasing order of probability of the above sentences? A, 3,4,1,2 B. 4,2,3,1 C.3,4,2,1 D. 4,2,1,3 4. My father warned me.I stop using telegram. A. have to B. Must C. Should D. Ought to 5. You ____look up the meaning of every word in the dictionary. You can guess contextually. A. don't have to B. Won't have to C. Must not D. didn't need to 6. Mr A : She told me that she is the hosts #time on kana TV. Mr B : Ohh, she ____ Danit Mekbeb. A. Is B. Could be C. Must be D. Have to be 7. I a mobile card ,because I had enough amount . A. need not have bought B. Need buying C. did not need to buy D. Need not buy 8. I _ this channel recently. It was better if I created it 3 months ago A. Shouldn't have create B. Created C. don't have to create D. Should have created 9. Students ____ to do this test for 10 minutes. ( written at the entry instruction of a test). A. are permitted B. have C. Are going D. are too busy 10. Which of the following sentence is wrong ? A. Are you hearing what the people are talking ? B. Can you hear what the people are talking? C. I can't understand what you are talking? D. I don't understand what you are talking? ►መልሱን ዛሬውኑ እንለቃለን ስለሆነ ቶሎ ብላቹ መልሱ✍ ንስር Academy ❗️ 🦅ከፍ እንደ ንስር! 🔗SHARE 🔗SHARE ╔════════════╗ 📚JOIN: @Neser_Academy 📚JOIN: @Neser_Academy ╚════════════╝ ⇲

📝የየትኛውም ጥያቄ መልስ ላይ ችግር አለ ብላቹ ከ አስባችሁ Comment ላይ አስቀምጡና እንወያይበታለን።✍ ንስር Academy ❗️ 🦅ከፍ እንደ ንስር! 🔗SHARE 🔗SHARE ╔════════════╗ 📚JOIN: @Neser_Academy 📚JOIN: @Neser_Academy ╚════════════╝ ⇲

Physics Questions with Answers Grade 11 Unit 2 - Vectors 1. Which of the following is incorrect about vectors A. A unit vector indicate the direction of specific vector. B. Null vector doesn't have a direction C. Coplanar vectors are vectors which act the same plane D. Concurrent vectors are vectors which act on the same point. B Null vector has no magnitude but its direction is arbitary (I.e it has head and tail at the same point . 2. Which of the following doesn't seem the result vector of A = 4i -3j and B = (√5) +2j A. 2 B. 8 C. 9 D. 5 C 1st find |A| and |B| |A|=√((4²) +(-3²))= √25 =5 |B=√((√5²) +(2²))=3 |A-B

Maths -Grade 11- unit 2 1. What is the Domain of (x³-3)/(x³-1)(x²-4) ? A. D £ R/1, 2, -2 B. D £ R/-1 ,1, 2, -2 C. D £ R/1, 2, D. D £ R/ √3 B (x³-3)/(x³-1)(x²-4) =(x³-3)/(x-1)(x²-1)(x²-4) =(x³-3)/(x-1)(x-1)(x+1)(x-2)(x+2) D € R/1,-2,2,-2 2. What is the simplify form of [(2x+22)/x²-6x+5)] ÷[(3/x-1) -(4/x-5)]? A. -2 B. 3x+2 C. -1 D.x-2 [(2x+22)/x²-6x+5)] ÷[(3/x-1) -(4/x-5)] =[(2x+22)/(x-1)(x-5)] ÷[(3(x-5) -(4(x-1)]/[(x-1)(x-5)} =2x+22/-x-11 =-2 3. -x²/x²-2x+1 ,what is the pertial fraction of this function ? A. 1/x+2 -1/x-2 B. -1/x+2 -1/x-2 C. 1/2x+2 -1/2x-2 D. -4/x+2 -4/x-2 C -x²/x²-2x+1= -x²/(x-1)² -x²/x²-2x+1 =A/x+1 +B/x-1 -x²= A(x-1)+B(x+1) If x=1 -1=2B , B=-1/2 If x=-1 -1= -2A A=1/2 4.solve 3x/2x-3=x/x+1 -5/2x²-x-3 A. -5 B. -5 ,-1 C. -5,2 D. -1,2 A Domain £ R/ -1,3/2 3x/2x-3=x/x+1 -5/2x²-x-3 3x/2x-3=(2(2x-3)-5)/(2x-3)(x+1) X=-1 and x=-5 T.s= {-} ንስር Academy ❗️ 🦅ከፍ እንደ ንስር! 🔗SHARE 🔗SHARE