Chemistry Questions

Q:

Which process is not associated with mechanical weathering?

A) reactions with oxygen B) frost wedging
C) biological oxygen activity D) unloading
 
Answer & Explanation Answer: A) reactions with oxygen

Explanation:

The process that occurs when physical forces break rock into smaller pieces without changing the rock's chemical composition is called mechanical weathering.

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Q:

Which of the following is used for disinfecting drinking water?

A) Baking powder B) Bleaching powder
C) Washing soda D) Baking soda
 
Answer & Explanation Answer: B) Bleaching powder

Explanation:
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Q:

What is the process of slow cooling of hot glass called?

A) Annealing B) Humidifying
C) Condensation D) Decantation
 
Answer & Explanation Answer: A) Annealing

Explanation:
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Q:

Which of the below options is called a laughing gas?

A) N2O B) CO2
C) H2O D) SO2
 
Answer & Explanation Answer: A) N2O

Explanation:
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Q:

The major ingredient of sweetened soft drink is

A) Carbonated water B) Hydrochloric acid
C) Phosphoric acid D) Caffeine
 
Answer & Explanation Answer: A) Carbonated water

Explanation:
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Q:

Select the INCORRECT set of Molecular Formula - IUPAC Name - Common Name from the following options.

A) C4H9OH B) C2H3OH - Methanol - Methyl Alcohol
C) C2H5OH - Ethanol - Ethyl Alcohol D) C3H7OH - Propanal - Propyl Alcohol
 
Answer & Explanation Answer: B) C2H3OH - Methanol - Methyl Alcohol

Explanation:
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Q:

In the following gases, which is not a colorless or odourless gas?

A) Nitrogen B) Chlorine
C) Hydrogen D) Oxygen
 
Answer & Explanation Answer: B) Chlorine

Explanation:
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Q:

Non-metallic character increases from ____.

A) Magnesium to Barium B) Potassium to Caesium
C) Oxygen to Selenium D) Sodium to Chlorine 
 
Answer & Explanation Answer: D) Sodium to Chlorine 

Explanation:
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