Chemistry Questions

Q:

Which kind of energy is stored in a chemical bond?

A) Potential energy B) Kinetic energy
C) Both A & B D) None of the above
 
Answer & Explanation Answer: A) Potential energy

Explanation:
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Q:

Bleaching powder is used in drinking water as

A) Disinfectant B) Antibiotic
C) Coagulant D) Antiseptic
 
Answer & Explanation Answer: A) Disinfectant

Explanation:
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Q:

The acid used in lead storage cells is

A) Sulphuric acid B) Nitric acid
C) Hydrochloric acid D) Phosphoric acid
 
Answer & Explanation Answer: A) Sulphuric acid

Explanation:

The acid used in lead storage cells is Sulphuric acid. They are used car batteries. Lead-acid batteries are capable of being recharged, which is important for their use in cars.

the_acid_used_in_lead_storage_cells_is1545132418.jpg image

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Q:

Which scientist established the Law of Octaves?

A) John Newlands B) Antoine Lavoisier
C) Alfred Nobel D) Marie Curie
 
Answer & Explanation Answer: A) John Newlands

Explanation:

Law of Octaves states that "If the chemical elements are arranged according to increasing atomic weight, those with similar physical and chemical properties occur after each interval of seven elements." That is every 8th element have the same physical and chemical properties. This was established by the British scientist John Newlands in the year 1865.

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Q:

Which one phosphorylates ADP to make ATP?

Answer

ATP synthase Phosphorylates ADP to make ATP.

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Q:

Ozone is concentrated in the

A) Stratosphere B) Troposphere
C) Ionosphere D) Mesosphere
 
Answer & Explanation Answer: A) Stratosphere

Explanation:

Most of the ozone in the atmosphere is found in the layer of stratosphere, which begins about 10.16 kilometers (6.10 miles) above Earth's surface and extends up to about 50 kilometers (31 miles) altitude.

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Q:

Which substance contains metallic bonds?

A) C6H12O6 B) Hg
C) H2O D) NaCl
 
Answer & Explanation Answer: B) Hg

Explanation:

Metallic bond is a bond between two metal atoms. Here in the given option Hg is the only metal with metallic bond.

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Q:

After cleaning the thermometer should be placed in

A) Sanitizer B) Ice cold water
C) Mercury D) None of the above
 
Answer & Explanation Answer: A) Sanitizer

Explanation:
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