Available now! Telegram Research 2025 ā the year's key insights 
Chemistry group 33
Open in Telegram
Show more
The country is not specifiedThe category is not specified
206
Subscribers
-124 hours
No data7 days
+130 days
Number of Posts
Posts in the last 30 days
Data loading in progress...
Reactions
Comments
Telegram Stars
TOP posts by
Data loading in progress...
Publication analysis
Posts | Views dynamics | |||||
Kutaa_12ffaa
Qormaatni Biyyoolessaa Xumura Barnoota Sadarkaa 2ffaa Kutaa 12ffaa Bara 2018 Waxabajjii 23/2018 kan eegalamu ta'uu, Daayirektarri Tajaajila Madaallii Barnootaa fi Qormaatilee biyyoolessaa Dr. Isheetuu Kabbadaa beeksisaniiru.
Kanaafuu, barattootni qormaaticha karaa online 'n fudhatan hunduu qormaata yaalii isaaniif ergamaa jiru sirriitti akka shaakalaniifi kanneen waraqaan qoramanis qophii barbaachisaa akka taasisan beeksisaniiru | 110 | 1 | 0 | 0 | Loading... | |
+1 š2017 History Entrance Examination with Answer. | 61 | 0 | 0 | 0 | Loading... | |
Chemistry multiple choice questions and answers
1.what is oxidation?
A) the addition of hydrogen to a substance and the removal of oxygen from a substance
B) the loss of electrons by a species , accompanied by an increase in oxidation number
C) the reduction of oxidation state of the oxidizing agent
D) the addition of electrons to the oxidizing agent
ā
Answer B
2.detergents are better than soaps because they
A) are naturally available
B) are biodegradable
C) can be used in hard water
D) none
ā
Answer C
3.All of the following properties of an element increase across a period. EXCEPT;
A) Electron affinity
B) Atomic size
C) Electronegativity
D) Ionization energy
ā
Answer B
4.Which of the following represents a tentative explanation of a certain scientific law?
A) Hypothesis
B) Observation
C) Experimentation
D) Theory
ā
Answer A
5.what is the maximum number of unpaired electrons in a d subshell?
A) 7
B) 8
C) 5
D) 4
ā
Answer C
6. If we increase the concentration of a reactant , what happens to the collisions between particles?
A) There are the same number of collisions, but they have less energy.
B) There are the same number of collisions, but they have more energy.
C) There are the same number of collisions.
D) There are more collisions
ā
Answer D
7.Which one of the following combinations CANNOT produce a buffer solution?
A.HClO4 and NaClO4
B. HNO2 and NaNO2
C. HCN and NaCN
D. NH3 and (NH4)2SO4
ā
Answer A
8.What is a titrant? It is a
A) solution of unknown concentration
B) diluted solution
C) solution of known concentration
D) weak solution
ā
Answer C
9.Reducing agent is a substance that is
A) reduced
B) oxidized
C) unaffected
D) reduced in oxidation number
ā
Answer B
10. Which one of the following is TRUE about the relative strength of a base?
A) Ionization of a base increases with its strength.
B) Ionization of a base decreases with its strength.
C) Weak bases dissociate completely in water.
D) Strong bases dissociate partially in water
ā
Answer A
IDEA FOR ALL STUDENTS | 61 | 1 | 0 | 0 | Loading... | |
 +3Qormaanni Xumuraa Kutaa 8ffaa bara 2018 har'a kennamuu jalqabee jira.
Naannoo Oromiyaattii fi magaala Finfinneetti qormaanni Xumura barnoota sadarkaa giddugaleessaa kutaa 8ffaa akka har'a ganama 3:00tti eegalameera.
Qormaatichi :-
Naannoo Oromiyaatti kilaastara 1,226tti barattoota kuma 400 fi kp uma 30 fi 001 ta'aniif Waxabajjii 11 hanga 12, 2018tti kan kennamu ta'a jedhameera.
SABA GUDDAA WAAN TAANEEF, MIIDIYAA GUDDAATU NUUF MALA!
š MIIDIYAA @ABDII_SABAA š
š www.facebook.com/AbdiiSabaaFb š
š https://youtube.com/@abdiisabaamedia š | 60 | 0 | 0 | 0 | Loading... |
