Everyday Science · Atoms, Elements & Compounds · page 20 of 20

Compounds MCQs with Answers

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Compounds MCQs (191–199)

9 MCQs with answers and a short one-liner. Hide answers to test yourself.

Past paper MCQs in this chapter · See all past papers

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191.
Salt among following is ?
Correct Answer: C. KCl
One-liner
Among the given options, KCl (Potassium Chloride) is the salt.
192.
Calculate the percentage of Ca in CaCO₃?
Correct Answer: C. 40%
One-liner
The percentage of calcium (Ca) in calcium carbonate (CaCO₃) is 40%.
193.
Benzene does not undergo?
Correct Answer: A. Addition reactions
One-liner
Benzene does not undergo addition reactions due to the stability of its aromatic ring.
194.
Water is a?
Correct Answer: B. Compound
One-liner
Water is a compound made up of two hydrogen atoms and one oxygen atom (H₂O).
195.
NaBH₄ and LiAlH₄ are ?
Correct Answer: B. Complex hydrides
One-liner
NaBH₄ (sodium borohydride) and LiAlH₄ (lithium aluminium hydride) are complex hydrides.
196.
Which of the following has a coordinate bond?
Correct Answer: D. NH₃BF₃
One-liner
NH₃BF₃ (ammonia boron trifluoride) contains a coordinate bond where nitrogen donates its lone pair to boron.
197.
is an unsaturated hydrocarbon.
Correct Answer: B. CH₃CHCHCH₂CH₃
One-liner
<strong>CH₃CHCHCH₂CH₃</strong> is an unsaturated hydrocarbon because it contains a carbon-carbon double bond (C=C).
198.
Those compounds which contain at least one benzene ring in their molecule are called _?
Correct Answer: C. Aromatic compounds
One-liner
Compounds containing at least one benzene ring in their molecular structure are called aromatic compounds.
199.
Potassium ferrocyanide is which type of salt?
Correct Answer: C. Complex salt
One-liner
Potassium ferrocyanide is a complex salt because it contains a complex ion [Fe(CN)₆]⁴⁻ that does not dissociate into its constituent ions in solution.

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Compounds MCQs with Answers

Compounds MCQs (191–199)

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