Benzene is obtained by the fractional distillation of
Options
(a) light oil (b) heavy oil (c) middle oil (d) anthracene oil
Correct Answer:
light oil
Explanation:
No explanation available. Be the first to […]
The inert form of carbon is
Options
(a) coal (b) diamond (c) graphite (d) charcoal
Correct Answer:
diamond
Explanation:
No explanation available. Be the first to write the explanation for this question by […]
A nucleophile must have
Options
(a) a negative charge (b) a positive charge (c) a lone pair of electrons (d) an electron deficient centre
Correct Answer:
a negative charge
Explanation:
No explanation available. […]
Cyclopentadienyl anion is
Options
(a) aromatic (b) non-aromatic (c) non-planar (d) aliphatic
Correct Answer:
aromatic
Explanation:
No explanation available. Be the first to write the explanation for this question by commenting below.
C₆H₆ consists of one ring,while naphthalene consists of two rings. Both of them are aromatic and obey the (4n+2) rule.Thus the number of π-electrons inside rings of C₆H₆ and naphthalene are respectively
Options
When CO₂ is passed through solution of calcium hydroxide,Which one of the following compound is precipitated
Options
(a) Ca(HCO₃)₂ (b) CaO (c) CaCO₃ (d) Ca(OH)₂
Correct Answer:
CaCO₃
Explanation:
No explanation available. Be […]
Only sp and sp² hybrid orbitals are involved in the formation of
Options
(a) CH₃ – CH = CH₂ (b) CH₃ – CH₃ (c) CH₃ – C ≡ CH (d) CH₂ = C […]
Aniline is separated from aniline-water mixture by
Options
(a) crystallisation (b) steam distillation (c) solvent extraction (d) differential extraction
Correct Answer:
differential extraction
Explanation:
No explanation available. Be the first to write the […]
The covalent bond length is the shortest in which one of the following bonds
Options
(a) C – O (b) C – C (c) C ≡ N (d) O – H
Correct Answer: […]
Glycerine is purified by
Options
(a) vacuum distillation (b) simple distillation (c) steam distillation (d) sublimation
Correct Answer:
vacuum distillation
Explanation:
The compounds which decompose at a temperature below their normal boiling points […]
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