Chemistry - Study Mode

[#536] Which of the following chemicals is responsible for depletion of ozone layer in the atmosphere?
Correct Answer

(A) Chlorofluorocarbons

Explanation

Solution: Chlorofluorocarbons is responsible for depletion of ozone layer in the atmosphere.

[#537] Which of the following is a method/process of disposing of solid waste which cannot be reused or recycled ?
Correct Answer

(D) All the above

Explanation

Solution: All of the above are process of disposing of solid waste which cannot be reused or recycled.

[#538] Silicon is used in
Correct Answer

(D) All of these

Explanation

Solution: Silicon is used in Solar energy devices, Semiconductors
and transistors.

[#539] Which of the inert gases can form compounds?
Correct Answer

(B) Xenon

Explanation

Solution: Xenon can form compounds.

[#540] Vulcanized rubber contains sulphur
Correct Answer

(B) 3-5%

Explanation

Solution: A vulcanized flexible tyre rubber contains about 3 –5% of sulphur whereas hard rubber (ebonite) contains about 32% of sulphur. The stiffness of vulcanized rubber depends on the amount of sulphur added.