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🔷🔹🔹Environment Questions🔹🔹🔷
1. What rays does the ozone layer in the atmosphere protect us from?
Ans - Ultraviolet rays
2. What is peroxitic?
Ans - air pollutant
3. What is the temperature of the earth due to 'green house effect'?
Ans - Grows
4. Which state has the largest number of forests in India?
Ans - Madhya Pradesh
5. Which gas is found the most in the atmosphere?
Ans - Nitrogen
6. What should be the minimum temperature required for the growth of trees in an area?
Ans - 4 degree Celsius
Where is the Forest Research Center located in India?
Ans - Dehradun
8. Whose afforestation process is?
Ans - To plant more trees
9. Which is the maximum forest cover area in India?
Ans - Reserved Forest
10. What is called green gold?
Ans - to the forest
11. Who is the owner of most of the forest wealth in India?
Ans - State
12. What is the forest festival related to?
Ans - By planting trees
13. Where is step agriculture done?
Ans - On the slopes of the mountains
14. What is the nature of environmental studies?
Ans - Multi disciplinary
15. What is the sum of the conditions around which we are surrounded?
Ans - Environment
16. Which is the most important forest for the global environment?
Ans - Tropical forest
17. Environment is the sum of those external conditions and influences, which affect the development cycle of organisms on the earth's surface. Who has given this statement?
Ans - Nicholas
18. Environment is an external force, which affects us. Whose statement is this?
Ans - C. C. Park's
19. Who started environmental awareness in the world?
Ans - William Hewett
20. What is the biological factor of environment?
Ans - Vegetation
21. Whose statement is this, that the sum of the ecological factors of the organisms is the environment?
Ans- A. fitting
22. Who was the exponent of environmental determinism?
Ans - Carl Ritter
23. The year 2002 has been declared by the United Nations as the International Year of
Ans - Sustainable Development
24. World Environment Day is celebrated on which date?
Ans - 5 June
25. To maintain the balance of the environment, what should be the percentage of the area under forest?
Ans - 33 %
सामान्य विज्ञान : Top Important One Liner (General Science: Top Important One Liner) ✍️
🟠 उत्प्लावकता से संबंधित वैज्ञानिक है – आर्किमिडीज़
🔵 The scientist related to buoyancy is – Archimedes
🟠 किसी ध्वनि स्रोत की आवृत्ति में होने वाले उतार-चढ़ाव क्या कहलाता है – डॉप्लर प्रभाव
🔵 The fluctuation in the frequency of a sound source is called - Doppler effect
🟠 दरव्यमान ऊर्जा संबंध किसका निष्कर्ष है – सापेक्षता का सामान्य सिद्धांत
🔵 Whose conclusion is the mass-energy relation – General theory of relativity
🟠 “पृथ्वी तथा अन्य ग्रह सूर्य के चक्कर लगाते है” किसका कथन है – कॉपरनिकस का
🔵 Whose statement is "Earth and other planets revolve around the Sun" - Copernicus
🟠 गरहों के गति का नियम किसने प्रतिपादित किया – केपलर
🔵 Who propounded the law of motion of the planets – Kepler
🟠 तारों व सूर्य की ऊर्जा का स्त्रोत क्या है – नाभिकीय संलयन
🔵 What is the source of energy of stars and sun – nuclear fusion
🟠 लॉ ऑफ फ्लोटिंग सिद्धांत की खोज किसने की – आर्कमिडीज ने
🔵 Who discovered the law of floating principle - Archimedes
🟠 पौधों में भी जीवन होता है को किसने बनवाया था – जे.सी. बोस ने
🔵 Plants also have life, who had made it – JC. Bose
🟠 सयाही सोखता किस सिद्धांत पर कार्य करता है – पृष्ठ तनाव
🔵 On which principle does ink adsorption work - surface tension
🟠 आइंस्टीन को नोबेल पुरस्कार किसलिए मिला था – प्रकाश विद्युत प्रभाव की व्याख्या करने के लिए
🔵 Why did Einstein get the Nobel Prize – for explaining the photoelectric effect
Which of the following statements is correct about mitochondria?
Ans 1. Mitochondria is present only in bacteria.
2. Mitochondria is present in all living cells.
3. Mitochondria is not bound by any membrane.
4. Mitochondria without outer membrane is called mitoplast.✔️
Which algae produces agar?
Ans 1. Gracilaria
2. Chlorella 3. Sargassum 4. Align
✍🏻️IMPORTANT PIGMENT
Carrot orange color - carotene
Red color in onion - Anthocyanin
Red color in tomato - lycopene
Almond bitterness - amyloid
Yellow color in papaya - Caryxanthin
Yellow color in onion - Quercetin
Bitterness in Cucumber - Cucumber Bitesin
Bitter gourd in bitter gourd - Memordicocyte
Astringency in Amla - Tannin
️Chili spiciness - capsaicin
🌺PERIODIC TABLE MOST ASKED QUESTION IN EXAMS🌺
━━━━━━━━━━━━━━━━━━━━━━━━━━━━
🔻🔻Most abundant element on earth's crust - Oxygen
🔺🔺Most abundant metal in earth's crust - Aluminium
🔻🔻Most abundant metalloid in earth's crust - Silicon
🔺🔺Most abundant element in atmosphere - Nitrogen
🔻🔻Most abundant element in the universe - Hydrogen
🔺🔺Most abundant element in human body - Oxygen
🔻🔻Most abundant gas in atmosphere - Nitrogen
🔺🔺Most abundant element in sea water - Chlorine
🔻🔻Most abundant element in moon's surface - Titanium
🔺🔺Most abundant metal present in human body and bones - Calcium
🔻🔻Most abundant metal compound in bones - Calcium phosphate
🔺🔺Most abundant compound on earth's surface - Water (H2O)
🔻🔻Most abundant compound in sea water - Sodium Chloride
🔻🔻Second most abundant compound in sea water - Magnesium Chloride
🔺🔺Most chemically reactive element - Fluorine
🔻🔻Second most chemically reactive element - Chlorine
🔺🔺The lightest and simplest element - Hydrogen
🔻🔻The lightest metal - Lithium
🔺🔺The rarest element in the earth - Astatine
🔻🔻The heaviest element - Osmium
🔺🔺The heaviest gaseous element - Radon
🔻🔻First man made element - Technetium
🔺🔺Most stable element - Lead
🔷🔷The periodic table is divided into 4 main blocks
👉👉*S block - elements of group 1 and 2
👉👉*P block - elements of group 13 to 18
👉👉*D block - elements of group 3 to 12
👉👉*F block - Lanthanides and Actinides
☂️☂️*The shortest period of the periodic table
🍁🍁Ans : First period
☂️☂️The longest period of the periodic table
🍁🍁Ans : Sixth period
☂️☂️Elements with atomic number 57-71 are known as
🍁🍁Ans : Lanthanides (rare earths)
☂️☂️Elements with atomic number 89-103 are known as
🍁🍁Ans : Actinides (radio active rare earths)
☂️☂️Total number of elements in periodic table
🍁🍁Ans : 118
☂️☂️The number of naturally occurring elements
🍁🍁Ans : 92
#IMPORTANT_FOR_COMING_EXAMS🤞🤞
✍️✍️CREDIT:-Krushna⭐️⭐️
Railway PREVIOUS ASKED QUESTION (SCIENCE )
✅How many elements are found in Mendeleev Periodic table? – 63
✅What is the molecular mass of Ozone? – 48
✅Which is the stable tissue in plant? – Xylem
✅Formula of Alkene? – CnH2n
✅For what purpose convex mirror is used? – Side view
✅Which group is termed as Zero Group?18
✅Which is the strongest metal?
Tungsten
✅What is the scientific name of CAT?Felis Catus
✅How many light years is called one parsec?3.262
✅Which gas is produced when lightning occurs?
✅Which is the heaviest metal in the periodic table?
Osmium
✅Molecular Mass of NaCl – 58.5
✅Alternate current was discovered by – Nicola Tesla
✅Formula for Momentum= M*V
✅Quick Silver – Hg (Mercury)
✅Largest muscle – Gluteus maximus
✅Which family does Boron belong to? – Metalloid
✅Male reproductive organ in flower – Stamens
✅How many ribs are there in a snake’s body? 24
✅pH value of Aqua Regia – 1 to 3
✅Chemical name of vitamin B12 – Cyanocobalamin
Human-Genetics: -
The Chromosome was named by W. Voltaire in 1888 AD.
Theodor Boveri gave the definitive demonstration that Chromosomes are the vectors of heredity
The Genome group or Colony is called a Genome.
The Genome is a Genetic material found in a Chromosome.
The gene found in Cytoplasm is called Plasmagene.
In 1956, H Xiao, Albert Leewan, Charles Ford and John Hamerton had said that Humans have 46 Chromosomes.
How many types of Amino Acids are there in Human - 20 Types
Which Enzyme is Synthesized by DNA - DNA Polymerase
Inhibitors of Polymerase Enzymes - Arther Kornberg
Genetics: -
Genetics is the Branch of hunder which heredity and variation of Organisms are studied.
Who is the Father of Genetics - Gregor Johann Mandel
For Genetic experiments, Mendel selected Pea Plants.
Generation-to-Generation transmission of Genetic traits and study of causes is Called Genetics.
Gene order Sequence - Cell Chromosome DNA Gene
"Every living being is an exact replica of its ancestors". This is the Principle - The Origin of the Same
The term Genetics was first used by W. Watson in 1905.
On the Chromosome, the microStructures of DNA that transfer Genetic traits are Called Genes.
The word Gene was first used by Johansen in 1909.
The difference between Phenotype and Genotype was Given by Johansen in 1911.
Phenotype - Those symptoms of Organisms that are visible directly, such as Gland, Infancy, Childhood, Old
Age etc.
Genotype - Those traits of Organisms that are stable and unchanging, such as Blood groups, intelligence, etc.
Genotypes are usually mixed with phenotypes due to which Animals may have the folloWing distinctions such as
Eye Color, Hair Color and Genetic Disease.
When there is any permanent change in DNA, it is Called Mutation.
Mutations may occur due to defects in Cell Division, Ultraviolet radiation, Viruses, or Chemical Elements.
Gender-associated properties - Polyandry, Hemophilia, Color Blindness, Myopia
🔺🔺Chemical Formula🔺🔺
common salt👉 NaCl
Baking Soda👉 NaHCO₃
washing soda 👉Na₂CO₃ 10H₂O
Caustic Soda 👉NaOH
Alum👉 K₂SO₄ Al₂(SO₄)₃ 24H₂O
Red medicine 👉KMnO₄
Caustic Potash 👉KOH
Lime water 👉Ca(OH)₂
Gypsum 👉CaSO₄ 2H₂O
Plaster of Paris 👉CaSO₄·½H₂O
Chalk 👉CaCO₃
Limestone👉 CaCO₃
Marble 👉CaCO₃
Nausadar 👉NH₄Cl
Laughing gas👉 N₂O
Litharge 👉PbO
Galena 👉PbS
white lead 👉2PbCO₃ Pb(OH)₂
Acid of salt 👉HCl
dry ice👉 CO₂
horn silver👉 AgCl
Heavy Water👉 D₂O
Producer gas 👉CO + N₂
Marsh gas 👉CH₄
Vinegar 👉CH₃COOH
Alcohol 👉C₂H₅OH
Urea👉 NH₂CONH₂
Benzene👉 C₆H₆
#REVISION
✍️✍️CREDIT:-Krushna⭐️⭐️
An image which can be obtained on a screen is called a real image.
An image which cannot be obtained on a screen is called a real image.
Mirror whose spherical surface is curved inwards is called a concave mirror
Mirror whose spherical surface is curved outwards is called a concave mirror
The center of curvature of a concave mirror is not a part of the mirror but lies
in front of the mirror
The center of curvature of a convex mirror is not a part of the mirror but lies
behind the mirror
Convex Lens is called a converging lens
Concave Lens is called a divergent lens
Total internal reflection is complete reflection of a ray of light within a
medium such as water or glass from the surrounding surfaces back into the
medium. The phenomenon occurs if the angle of incidence is greater than a
certain limiting angle, called the critical angle.
Phenomenon of splitting of a beam of white light into its constituent colors
on passing through prism is called Dispersion of Light
Which of the following are non-vascular flowerless plants in the taxonomic division of
Bryophyta?
Ans 1. Mosses✔️
2. Pines
3. Pea plant
4. Ferns
VITAMINS CHEMICAL NAMES
*Vitamin A Retinol
*Vitamin B1 Thiamine
*Vitamin B2 Riboflavin
*Vitamin B3 Niacin
*Vitamin B5 Pantothenic acid
*Vitamin B7 Biotin
*Vitamin B9 Folic Acid
*Vitamin B12 Cobalamin
*Vitamin C Ascorbic acid
*Vitamin D Calciferol
*Vitamin E Tocopherol
*Vitamin K Phylloquinone
* Antipellagra vitamin - Vitamin B3
* Fresh food vitamin - Vitamin C
* Anti ricketic vitamin - Vitamin D
* Sunshine Vitamin - Vitamin D
* Anti sterility Vitamin - Vitamin E
* Beauty Vitamin - Vitamin E
* Coagulation vitamin - Vitamin K
CLASSIFICATION OF GROUPS
*1st group -Alkali metals
*2nd group- Alkaline earth metals
*3-12 group -Transition elements
*13thgroup -Boron family
*14thgroup -Carbon family
*15thgroup - Nitrogen family
*16thgroup - Oxygen family
*17thgroup - Halogen
*18thgroup - Noble gas
*The first artificial element
Ans : Technetium (Z = 43)
*Man made elements are known as
Ans : Transuranics
*The periodic table is divided into 4 main blocks
*S block - elements of group 1 and 2
*P block - elements of group 13 to 18
*D block - elements of group 3 to 12
*F block - Lanthanides and Actinides
*The shortest period of the periodic table
Ans : First period
*The longest period of the periodic table
Ans : Sixth period
*Elements with atomic number 57-71 are known as
Ans : Lanthanides (rare earths)
*Elements with atomic number 89-103 are known as
Ans : Actinides (radio active rare earths)
*Total number of elements in periodic table
Ans : 118
*The rows are called
Ans : Periods
*Columns are called
Ans : Groups
*Mendeleev's periodic table was based on
Ans : increasing order of atomic mass
*Moseley's periodic table was based on the
Ans : atomic number of elements
*The modern periodic table is based on
Ans : atomic number
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