Everyday Science · Atoms, Elements & Compounds · page 13 of 20

Compounds MCQs with Answers

Includes 9 past paper MCQs (marked).

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Compounds MCQs (121–130)

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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121.
The ozone molecule contains which type of bonding?
Correct Answer: C. Both A and B
One-liner
The ozone (O₃) molecule contains both covalent and coordinate covalent bonding.
122.
A formula that indicates actual number and type of atoms in a molecule is called?
Correct Answer: B. Molecular formula
One-liner
A formula that shows the actual number and type of atoms in a molecule is called a molecular formula.
123.
Past Paper MCQ
Saturated hydrocarbons are called?
Correct Answer: C. Alkanes
One-liner
Saturated hydrocarbons are called Alkanes.
124.
Hydrogen chloride molecule contains _?
Correct Answer: D. Covalent bond
One-liner
Hydrogen chloride (HCl) molecule contains a covalent bond formed by sharing of electrons between hydrogen and chlorine atoms.
125.
The bonding in sulphuric acid can be represented by the structure shown. What is the total number of electrons in the covalent bonds surrounding the sulphur atom?
Correct Answer: C. 12
One-liner
The total number of electrons in the covalent bonds surrounding the sulphur atom in sulphuric acid (H₂SO₄) is 12.
126.
Cyclohexane is a compound classified as:
Correct Answer: B. Alicyclic
One-liner
Cyclohexane is classified as an alicyclic compound because it is a saturated hydrocarbon with carbon atoms arranged in a closed ring structure.
127.
NaCl is a _ solid.
Correct Answer: D. Ionic
One-liner
NaCl is an ionic solid.
128.
NH4Cl contains _?
Correct Answer: D. All of these
One-liner
NH₄Cl (ammonium chloride) contains All of these — ionic bond, covalent bond, and coordinate covalent bond.
129.
Which of the following is soluble in water?
Correct Answer: D. Sodium Chloride
One-liner
Sodium Chloride (common salt) is readily soluble in water, while most other chloride salts of heavy metals like silver, lead, and mercury are insoluble or sparingly soluble.
130.
The volume occupied by 16g of CH₄ is _?
Correct Answer: B. 22.4 dm³
One-liner
The volume occupied by 16g of CH₄ (methane) at STP is 22.4 dm³ because 16g equals one mole of CH₄ and one mole of any gas occupies 22.4 dm³ at STP.

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Compounds MCQs with Answers

Compounds MCQs (121–130)

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