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Q:

Which of the following elements is used for vulcanizing rubber?

A) Sulphur B) Chlorine
C) Bromine D) Phosphorus
 
Answer & Explanation Answer: A) Sulphur

Explanation:

Vulcanization of rubber is a process of improvement of the rubber elasticity and strength by heating it in the presence of sulfur rubber much stronger, more flexible, and more resistant to heat and other environmental conditions.

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Q:

Which of the following is a chemical formula of quicklime?

A) Ca2O B) Ca2CO3
C) CaO2 D) CaO
 
Answer & Explanation Answer: D) CaO

Explanation:
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Q:

Which of the following is also known as Carbolic Acid?

A) Phenol B) Hydroxide
C) Sulphuric Acid D) Ethanol
 
Answer & Explanation Answer: A) Phenol

Explanation:
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Q:

The complexity and variety of organic molecules is due to

A) their interaction with water B) their tremendously large sizes
C) the chemical versatility of carbon atoms D) the variety of rare elements in organic molecules
 
Answer & Explanation Answer: C) the chemical versatility of carbon atoms

Explanation:

The complexity and variety of organic molecules is due to the chemical versatility of carbon atoms.

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Q:

Which of the following is a Synthetic rubber?

A) Leoprene B) Monoprene
C) Neoprene D) Isoprene
 
Answer & Explanation Answer: C) Neoprene

Explanation:
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Q:

Uranium found in Ladakh is an example of which type of resource?

A) unnatural resources B) Actual resources
C) Potential resources D) Biotic resources
 
Answer & Explanation Answer: C) Potential resources

Explanation:
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Q:

The atoms of Germanium, Arsenic, Selenium and Bromine contain ...... shells.

A) 3 B) 7
C) 5 D) 4
 
Answer & Explanation Answer: D) 4

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Q:

_________ gets converted to phosgene, when exposed to sunlight.

A) Chloroform B) Acetone
C) Benzene D) Propylene
 
Answer & Explanation Answer: A) Chloroform

Explanation:
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