Free MCQs & Online Quiz Practice for Exams

Q: All compounds are organic except (2011 ETEA)

A) (H₂N)₂CO

B) NH₄CNO

C) CH₃NO₂

D) C₂H₅N₂HSO₄

Q: Carbon monoxide can be converted by hydrogenolysis to alkanes by the process known as (2016 ETEA)

A) Contact process

B) Fischer–Tropsch (FT) process

C) Fermentation process

D) Haber–Bosch process

Q: Fullerenes are solid allotropes of (2016 ETEA)

A) Fluorine

B) Phosphorus

C) Sulphur

D) Carbon

Q: A gas produced from reaction of dilute HCl with limestone gives white ppt in lime water; the ppt is of (2016 ETEA)

A) CaSO₄

B) CaCO₃

C) CaCl₂

D) MgCO₃

Q: To differentiate between white AgCl ppt and off-white AgBr ppt we use (2017 ETEA)

A) Dil. NaOH

B) Dil. Pb(NO₃)₂

C) Dil. NH₃

D) Dil. FeCl₃

Q: Which of the following is not the major source of organic compound? (2019 ETEA)

A) Natural gas

B) Petroleum

C) Coal

D) Ammoniacal liquor

Q: The form of coal having highest percentage of carbon is called (2020 ETEA)

A) Bituminous

B) Sub-bituminous

C) Lignite

D) Anthracite

Q: The process which involves hydrogenolysis of C–O bond and formation of C–C bond is called (2020 ETEA)

A) Cracking

B) Pyrolysis

C) Fractional distillation

D) Fischer–Tropsch process

Q: Which one of the Grignard reactions could give rise to CH₃CH₂CH(OH)CH₂CH₃? (2006 ETEA)

A) Propane and methyl Grignard

B) Methyl ethyl ketone and methyl Grignard

C) Propanaldehyde and ethyl Grignard

D) None of these

Q: Which of the following reactions shows nucleophilic substitution of alkyl halide R–X? (2007 ETEA)

A) RX + H₂ → RH + HX

B) RX + KCN → RCN + KX

C) 2RX + 2Na → R–R + 2NaX

D) R–X + Mg → RMgX

Q: Dry CO₂ is passed through Grignard reagent in ether and hydrolyzed with dil. HCl; the product is (2008 ETEA)

A) Primary alcohol

B) Acetone

C) Carboxylic acid

D) Secondary alcohol

Q: Product obtained when methyl magnesium chloride reacts with ammonia (2008 ETEA)

A) Methane

B) Methylamine

C) Ethylamine

D) Methyl chloride

Q: Which of the following carbonium ion is more stable? (2011 ETEA)

A) R₃C⁺

B) R₂CH⁺

C) RCH₂⁺

D) CH₃⁺

Q: Which compound reacts fastest in an SN2 reaction? (2011 ETEA)

A) (CH₃)₂Cl

B) (CH₃)₂CHI

C) CH₃CH₂I

D) CH₂=CHI

Q: Formaldehyde gives addition product with methyl magnesium iodide which on hydrolysis gives (2013 ETEA)

A) CH₃OH

B) C₂H₅OH

C) (CH₃)₂CH–OH

D) (CH₃)₃COH

Q: CH₃CH₂OH + PCl₅ gives? (2013 ETEA)

A) CH₃CH₂Cl + POCl₃ + H₂O

B) CH₃CH₂Cl + POCl₃ + HCl

C) CH₃CH₂Cl + POCl₃ + H₂O

D) C₂H₅Cl + H₃PO₃

Q: Unimolecular elimination of 2-bromo-2-methylpropane gives (2013 ETEA)

A) 2-methylpropane

B) 2-methylpropene

C) 2-methyl-1-propanol

D) 2-pentanol

Q: Compound giving ethyl alcohol after reaction with CH₃MgI followed by hydrolysis (2014 ETEA)

A) Ethylene

B) Acetaldehyde

C) Acetone

D) Formaldehyde

Q: Correct order of reactivity of alkyl halides (2015 ETEA)

A) R–I > R–Br > R–Cl > R–F

B) R–Br > R–I > R–F > R–Cl

C) R–F > R–Cl > R–Br > R–I

D) R–Cl > R–I > R–Br > R–I

Q: Correct statement regarding basicity (2016 ETEA)

A) Ammonia stronger base than primary amines

B) Primary aliphatic amines stronger bases than ammonia

C) Both have equal basic strength

D) Aliphatic amines not basic