Chemistry (रसायनशास्त्र) Top 200 Question, 12th Board Chemistry Most VVI Objective Question With Answer PART – 1 In English Medium
1. Which of the following has maximum depression in freezing point ?
(A) K2SO4
(B) NaCI
(C) Urea
(D) Glucose
ANSWER:- A
2. The unit of rate constant of first order reaction is
(A) time-1
(B) mole litre-1 sec-1
(C) litre mole-1 sec-1
(D) litre mole-1 sec.
ANSWER:- A
3. H3PO3 is a
(A) monobasic acid
(B) dibasic acid
(C tribasic acid
(D) none of these.
ANSWER:- B
4. Which of the following transition metal ions is diamagnetic ?
(A) CO2+
(B) Ni2+
(C) Cu2+
(D) Zn2+
ANSWER:- C
5. The impurity present in the mineral is called
(A) Flux
(B) Gangue
(C) Slag
(D) Alloy
ANSWER:- B
6. The oxidation state of nickel in [Ni (CO)4 is
(A) 1
(B) O
(C) 2
(D) 3
ANSWER:- B
7. Which one of the following types of drugs reduces fever?
(A) Analgesics
(B) Antibiotics
(C) Antipyretics
(D) Tranquillizers
ANSWER:- C
8. Methylamine can be prepared by
(A) Wurtz reaction
(B) Hofmann’s bromamide reaction
(C) Friedel-Crafts reaction
(D) Kolbe reaction.
ANSWER:- B
9. Alkyl halide is converted into an alcohol by
(A) Addition reaction
(B) Substitution reaction
(C) Elimination reaction
(D) Dehydrohalogenation reaction
ANSWER:- B
10. Caprolactum is the monomer for
(A) Nylon-6
(B) Nylon 6,6
(C) Nylon-2-Nylon-6
(D) Terylene
ANSWER:- A
11. Faraday’s second law of electrolysis is related to
(A) atomic number of the cation
(B) equivalent weight of the electrolyte
(C) Atomic number of the anion
(D) speed of cation
ANSWER:- B
12. Which of the following is not an element of first transition series?
(A) Iron
(B) Chromium
(C) Magnesium
(D) Nickel
ANSWER:- C
13. The formula of copper pyrite is
(A) CuFes
(B) CuFeS2
(C) Cu2S
(D) CuFeS2
ANSWER:- B
14. Which of the following is not a colligative property ?
(A) Depression in freezing point
(B) Optical activitystoiminn
(C) Relative lowering of vapour pressure
(D) Elevation of boiling point
ANSWER:- B
15. The nmber of chiral carbon in glucose is to
(A) 4
(B) 5
(C) 3
(D) 1
ANSWER:- D
16. The antiseptic action of CHI3 is
(A) due to iodoform
(B) due to liberation of free iodine
(C) partially due to iodine and partially due to CHI3
(D) none of these
ANSWER:- B
17. Glycerol is a
(A) Primary alcohol
(B) Secondary alcohol
(C) Tertiary alcohol
(D) Trihydric alcohol
ANSWER:- D
18. The number of P-0-P bonds in cyclic metaphosphoric acid is
(A) two
(B) zero
(C) three
(D) four
ANSWER:- D
19. Smelting involves reduction of metal oxide with
(B) C
(A) AI
(C) Mg
(D) 0
ANSWER:- B
20. Which of the following is not a condensation polymer ?
(A) Glyptal
(B) Nylon-6, 6
(C) PTFE
(D) Dacron
ANSWER:- D
21. What is the coordination number of sodium in sodium oxide Na[Na2O]?
(A) 6
(B) 4
(C) 8
(D) 2
ANSWER:- C
22. Which one of the following is a Lyophilic colloid ?
(A) Milk
(B) Gum
(C) Fog
(D) Blood
ANSWER:- B
23. Which of the following metals is most abundant in the earth crust?
(A) Mg
(B) Na
(C) Al
(D) Fe
ANSWER:- C
24. Which of the following is the strongest oxidising agent ?
(A) F
(B) CL
(C) I
(D) Br
ANSWER:- B
25. Which of the following has maximum ionisation potential ?
(A) AI
(B) P
(C) Si
(D) Mg
ANSWER:- B
26. Which of the following compounds has tetrahedral geometry?
(A) [Ni (CN)4]2-
(B) [Pd (CN)]2-
(C) [PdCl4]2-
(D) [NiCl4]2
ANSWER:- D
27. The compound having general formula CnH2n+2 is
(A) Alkene
(B) Alkyne
(C) Alkane
(D) None of these
ANSWER:- C
28. Which of the following is not an element of first row of transition series ?
(A) Fe
(B)
(C) Mg
(D) Ni
ANSWER:- C
29. The oxidation state of nickel in [Ni(CO)4 is
(A) 4
(B) 0
(C) 2
(D) 3
ANSWER:- B
30. The formula of Caustic Soda Is-
(A) K2SO4
(B) NaOH
(C) Urea
(D) NH3
ANSWER:- B
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✔ CHEMISTRY VVI OBJECTIVE PART 1 [Q.1-30]
✔ CHEMISTRY VVI OBJECTIVE PART 2 [Q.31-60]
✔ CHEMISTRY VVI OBJECTIVE PART 3 [Q.61-90]
✔ CHEMISTRY VVI OBJECTIVE PART 4 [Q.91-120]
✔ CHEMISTRY VVI OBJECTIVE PART 5 [Q.121-160]
✔ PHYSICS VVI OBJECTIVE PART 1 [Q.1-30]
✔ PHYSICS VVI OBJECTIVE PART 2 [Q.31-60]
✔ PHYSICS VVI OBJECTIVE PART 3 [Q.61-90]
✔ PHYSICS VVI OBJECTIVE PART 4 [Q.91-120]
✔ PHYSICS VVI OBJECTIVE PART 5 [Q.121-160]
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