Free MCQs & Online Quiz Practice for Exams

Q: Coal can be converted to petroleum by:

A) Haber process

B) Destructive distillation

C) Fischer–Tropsch process

D) Fractional distillation

Q: Pyridine belongs to which class of organic compounds:

A) Heterocyclic

B) Hydrocarbon

C) Alicyclic

D) Homocyclic

Q: Which of the following represents the functional group of amides?

A) -COOR

B) -NH₂

C) -C≡N

D) -CONH₂

Q: Which of the following elements cannot be detected in a given organic compound directly?

A) Chlorine

B) Phosphorus

C) Nitrogen

D) Oxygen

Q: Lassaigne's solution is used to test the presence of:

A) Nitrogen

B) Halogen

C) Sulphur

D) All of these

Q: Lassaigne's solution plus silver nitrate gives a yellow precipitate which is insoluble in ammonium hydroxide. This shows the presence of:

A) Nitrogen

B) Sulphur

C) Iodine

D) Carbon

Q: Fischer–Tropsch synthesis involves the formation of alkanes by the combination of:

A) CO and H₂

B) CO₂ and H₂

C) C and H₂

D) All of these

Q: Bucky balls consist of … carbon rings:

A) Tetragonal

B) Pentagonal

C) Hexagonal

D) Pentagonal and Hexagonal (both)

Q: Pyridine:

A) Is homocyclic compound

B) Contains nitrogen

C) Is heterocyclic compound

D) Both b and c

Q: The number of possible isomers for an alkane having the molecular formula C₅H₁₂ is:

A) 2

B) 3

C) 4

D) 5

Q: 2,2,3,3-Tetrabromobutane when heated with zinc dust yields:

A) but-1-yne

B) but-2-yne

C) isobutylene

D) pent-1-yne

Q: But-2-yne can be converted into cis-but-2-ene by using:

A) H₂/Ni

B) Lindlar's catalyst

C) Na(liq.) NH₃

D) Zn/HCl

Q: When excess HCl is added to acetylene the product is:

A) vinyl chloride

B) ethyl chloride

C) 1,2-dichloroethane

D) 1,1-dichloroethane

Q: The homolytic fission of a C–H bond in an alkane results in:

A) carbanion

B) carbocation

C) alkyl free radical

D) all of these

Q: The group that deactivates the benzene ring but is ortho/para-directing is:

A) −NH₂

B) −OH

C) −OCH₃

D) −Cl

Q: Which alkene can be expected to exhibit geometrical isomerism:

A) but-1-ene

B) 2-methylbut-2-ene

C) 2-methylpropene

D) none of these

Q: How many structural isomers are possible for C₂H₆O?

A) 2

B) 4

C) 8

D) 5

Q: Addition of HBr to isobutylene mainly gives:

A) n-butyl bromide

B) isobutyl bromide

C) sec-butyl bromide

D) tert-butyl bromide

Q: An alkene upon ozonolysis yields a mixture of acetone and acetaldehyde. The alkene is:

A) isobutylene

B) but-2-ene

C) 2-methylbut-2-ene

D) pent-2-ene

Q: Dehydrohalogenation of an alkyl halide is carried out in the presence of:

A) Zn dust

B) conc. H₂SO₄

C) alcoholic KOH

D) aqueous KOH