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 Chemistry Questions

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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:

Anaerobic glycolysis occurs without

A) water B) glucose
C) oxygen D) All of the above
 
Answer & Explanation Answer: C) oxygen

Explanation:

Anaerobic glycolysis is the transformation of glucose to lactate when limited amounts of oxygen (O2) are available. 

 

Hence, Anaerobic glycolysis occurs without oxygen.

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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:

The commonly used coolant in refrigerators is

A) Ammonia B) Nitrogen
C) Freon D) Oxygen
 
Answer & Explanation Answer: C) Freon

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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:

The element present in all organic molecules is

A) Hydrogen B) Oxygen
C) Carbon D) None of the above
 
Answer & Explanation Answer: C) Carbon

Explanation:
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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:

The process of depositing a layer of zinc on iron is called ___________

A) Galvanisation B) Crystallisation
C) Rusting D) Baking
 
Answer & Explanation Answer: A) Galvanisation

Explanation:
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