Science Quiz, KBC Quiz, KBC Questions, Multiple Choice Question Answers

Question: A pH below 7 indicates...?

1. Alkalinity
   
2. Presence of ions
   
3. Purity of the sample
   
4. Acidity
   

Incorrect Answer

Correct Answer
A pH scale reading less than 7 indicates acidity.

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Question: Which of the following gases is green in color?

1. Chlorine
   
2. Hydrogen
   
3. Krypton
   
4. Neon
   

Incorrect Answer

Correct Answer
Chlorine gas is green in color.

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Question: What is the combination of any substance with oxygen known as?

1. Combustion
   
2. Reduction
   
3. Hydrogenation
   
4. Oxidation
   

Incorrect Answer

Correct Answer
The combination of any substance with oxygen is known as oxidation.

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Question: Which of the following is not an allotrope of carbon?

1. Diamond
   
2. Graphite
   
3. Charcoal
   
4. Silk
   

Incorrect Answer

Correct Answer
Silk is not an allotrope of carbon whereas charcoal, diamond, and graphite are allotropes of carbon.

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Question: The 'fizz' in soft drinks is caused by...?

1. Helium
   
2. Carbon dioxide
   
3. Nitrogen
   
4. Hydrogen
   

Incorrect Answer

Correct Answer
The 'fizz' in soft drinks is caused by Carbon dioxide.

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Question: What gas is evolved when dilute sulfuric acid is added to zinc?

1. Sulfur Dioxide
   
2. Hydrogen
   
3. Hydrogen Peroxide
   
4. Argon
   

Incorrect Answer

Correct Answer
Hydrogen gas is evolved when dilute Sulfuric acid is added to zinc.

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Question: Which of the following is not an acid?

1. H2SO4
   
2. HCl
   
3. NaOH
   
4. HNO3
   

Incorrect Answer

Correct Answer
HCl (Hydrochloric acid), H2SO4 (Sulfuric acid), and HNO3 (Nitirc acid) are famous acids whereas NaOH (Sodium hydroxide) is a famous base.

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Question: The lead of a pencil mainly contains...?

1. Carbon black
   
2. Plastics
   
3. Lead
   
4. Graphite
   

Incorrect Answer

Correct Answer

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Question: Watt is the unit of...?

1. Electric Current
   
2. Power
   
3. Work
   
4. Electric Charge
   

Incorrect Answer

Correct Answer

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Question: Kelvin is the unit of...?

1. Temperature
   
2. Energy
   
3. Heat
   
4. Work
   

Incorrect Answer

Correct Answer

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