General Science - Chemistry GK

 1. Which of the following gas is used to kill bacteria?

[A] Chlorine

[B] Oxygen

[C] Hydrogen

[D] Neon

Correct Answer: A [Chlorine]

2. Where do people who work get black lung disease?

[A] Electroplating industry

[B] Organic solvent industry

[C] Paint manufacturing industry

[D] Coal mine

Correct Answer: D [Coal Mine]

3. Which of the following is an inert gas mixed with oxygen given to patients suffering from obstructive respiration?

[A] Helium

[B] Krypton

[C] Radon

[D] Organ

Correct Answer: A [Helium]

4. Acid rain destroys vegetation because it contains?

[A] Nitric acid is

[B] Ozone is

[C] Carbon monoxide

[D] Sulfuric acid is

Correct Answer: D [Sulphuric acid is]

5. Example of aerosol?

[A] Milk

[B] River water

[C] smoke

[D] Blood

Correct Answer: C [smoke]

6. Smog is a potent eye irritant present in?

[A] Nitric oxide

[B] Sulfur dioxide

[C] Peroxy acetyl nitrate

[D] Carbon dioxide

Correct Answer: C [peroxy acetyl nitrate]

7. Which gas in the atmosphere absorbs ultraviolet rays?

[A] Ozone

[B] Methane

[C] Nitrogen

[D] Helium

Correct Answer: A [Ozone]

8. Which chemical substance is often used for artificial rain or cloud seeding?

[A] Silver iodide

[B] Sodium chloride

[C] Dry ice

[D] All of the above

Correct Answer: D [all of the above]

9. The gas used for artificial ripening of green fruits is?

[A] Ethylene

[B] Acetylene

[C] Ethane

[D] Methane

Correct Answer: A [Ethylene]

10. Which of the following pesticides depletes ozone?

[A] D.D.T.

[B] Benzene

[C] Methyl Bromite

[D] Ethylene ozonide

Correct Answer: C [Methyl Bromite]