Chemistry GK Questions and Answers for Competitive Exams
Name an alkylbenzene widely used as a chemical intermediate in the production of phenol.
(A) Cumene
(B) Furan
(C) Styrene
(D) Toluene
Correct Answer : A
Which of the following is an organic compound with the formula C6H4Cl2 that is used as a fumigant insecticide to control cloth months?
(A) Paradichlorobenzene
(B) Chlorobenzene
(C) Benzoyl chloride
(D) Ethylbenzene
Correct Answer : A
Electronic configuration of the outer shell of the element Gd with atomic number 64 is
(A) 4f4 5df 6s1
(B) 4f3 5df 6s2
(C) 4f5 5d4 6s1
(D) 4f7 5d1 6s2
Correct Answer : D
What will be the work done by 3 moles of an ideal gas when it expands spontaneously in vacuum?
(A) Zero
(B) Infinite
(C) 3 joules
(D) 9 joules
Correct Answer : A
Find the compound which undergoes nucleophilic substitution reaction exclusively by an SN1 mechanism
(A) Benzyl chloride
(B) Chlorobenzene
(C) Ethyl chloride
(D) Isopropyl chloride
Correct Answer : A
A proton donor is a ____________ substance.
(A) Proton genic
(B) Photophilic
(C) Amphoteric
(D) Amphiprotic
Correct Answer : A
Which of the following substances cannot act as both acid as well as a base?
(A) Amphoteric substance
(B) Amphiprotic substance
(C) Ampholyte
(D) Photophilic
Correct Answer : D
Lewis concept does explain the behaviour of __________
(A) Bases
(B) Salts
(C) Protonic acids
(D) Amphoteric substances
Correct Answer : C
Which of the following is the strongest hydracid known?
(A) HCN
(B) Hclo4
(C) HCL
(D) Hno3
Correct Answer : B
Which of the following methods is best suited for the separation of a mixture containing naphthalene and benzoic acid
(A) Crystallization
(B) Chromatography
(C) Sublimation
(D) Distillation
Correct Answer : C
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