Which of the following is the property of an ionic compound?

B. High melting and boiling points

A. Low melting and boiling points

B. High melting and boiling points

C. Conduct electricity in solid state

D. Soluble in non-polar solvents

Everyday Science · Atoms, Elements & Compounds · page 15 of 20

Compounds MCQs with Answers

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Compounds MCQs (141–150)

10 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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141.
Which substance has tetrahedral geometry?
Correct Answer: B. Methane (CH₄)
One-liner
Methane (CH₄) has a perfect tetrahedral geometry with bond angles of 109.5°.
142.
Which chloride of lead is ionic in nature?
Correct Answer: B. PbCl₂
One-liner
Lead(II) chloride, PbCl₂, is ionic in nature, while lead(IV) chloride (PbCl₄) is covalent.
143.
Which one of the following forms a weak electrolyte solution with water?
Correct Answer: B. CH₃COOH
One-liner
CH₃COOH (acetic acid) forms a weak electrolyte solution with water because it only partially ionizes in aqueous solution.
144.
The solution which distills without change in composition is called _?
Correct Answer: D. Azeotropic mixture
One-liner
A solution that distills without any change in composition is called an azeotropic mixture.
145.
Past Paper MCQ
Air is an example of a/an ?
Correct Answer: C. Mixture
One-liner
Air is an example of a mixture because it consists of different gases like nitrogen, oxygen, and carbon dioxide that are physically combined but not chemically bonded.
146.
Which of the following is the property of an ionic compound?
Correct Answer: B. High melting and boiling points
One-liner
Ionic compounds have high melting and boiling points due to the strong electrostatic forces of attraction between oppositely charged ions in their crystal lattice.
147.
Salts made using hydrochloric acid are called ?
Correct Answer: C. Chlorides
One-liner
Salts formed from hydrochloric acid (HCl) are called chlorides.
148.
Molten NaCl conducts electricity due to the presence of:
Correct Answer: C. Free ions
One-liner
Molten NaCl conducts electricity due to the presence of free ions.
149.
Which of the following compounds has the lowest boiling point?
Correct Answer: C. RbCl
One-liner
Among the given options, RbCl (Rubidium Chloride) has the lowest boiling point because rubidium is a large alkali metal with weaker ionic bonding compared to compounds of smaller, more highly charged cations.
150.
Hydrocarbons contain _?
Correct Answer: C. C & H only
One-liner
Hydrocarbons are organic compounds consisting exclusively of carbon (C) and hydrogen (H) atoms.

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Compounds MCQs with Answers

Compounds MCQs (141–150)

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