Chemistry Questions

Q:

Which statement describes nuclear binding energy?

A) It is the energy that is required to overcome mass defect. B) It is the result of converting mass to energy.
C) It is the energy that is required to bind protons and neutrons together in a nucleus. D) None of the above
 
Answer & Explanation Answer: A) It is the energy that is required to overcome mass defect.

Explanation:

Nuclear binding energy is the minimum energy that would be required to disassemble the nucleus of an atom into its component parts. These component parts are neutrons and protons, which are collectively called nucleons.

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Q:

Through which conversion is energy released?

A) CO2 and H2O to C6H12O6 and O2 B) NADP+ to NADPH
C) ADP to ATP D) ATP to ADP
 
Answer & Explanation Answer: D) ATP to ADP

Explanation:
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Q:

Kaolin is chemically classified as

A) Argillaceous rock B) Silicious rock
C) Metamorphic rock D) Calcareous rock
 
Answer & Explanation Answer: A) Argillaceous rock

Explanation:

Kaolin is chemically classified as Argillaceous rock.

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Q:

Permanent hardness of water may be removed by the addition of

A) Alum B) Lime
C) Sodium Carbonate D) Potassium Permanganate
 
Answer & Explanation Answer: C) Sodium Carbonate

Explanation:

Permanent hardness of water may be removed by the addition of Sodium Carbonate.

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Q:

Which molecule contains a nonpolar covalent bond?

A) Cl2 B) Br2
C) H2 D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

In all the given options, molecules are containing nonpolar covalent bonds.

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Q:

Which gas is used in tube light?

A) Oxygen B) Hydrogen
C) Neon D) Nitric oxide
 
Answer & Explanation Answer: C) Neon

Explanation:
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Q:

Which is the most malleable metal?

A) Gold B) Silver
C) Both A & B D) Bronze
 
Answer & Explanation Answer: A) Gold

Explanation:

The most malleable metal is Gold.

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Q:

Which of the following is a major function of chloride?

A) Helps maintain gastric acidity B) Acts as principal intracellular electrolyte
C) Acts as principal intracellular electrolyte D) All of the above
 
Answer & Explanation Answer: A) Helps maintain gastric acidity

Explanation:
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