General Knowledge Questions

Q:

Which  of  the  following  substances  cause temporary hardness in water?

1. Mg(HCO3)2

2. Ca(HCO3)2

3. CaCl2

4. MgSO4

A) 3 and 4 B) 2and 3
C) 1 and 4 D) 1 and 2
 
Answer & Explanation Answer: D) 1 and 2

Explanation:

There are two types of water hardness: temporary and permanent hardness. Temporary hardness is due to the presence of calcium hydrogen carbonate Ca(HCO3)2(aq) and magnesium hydrogen carbonate Mg(HCO3)2(aq).

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Q:

Name the vitamin whose deficiency causes excessive bleeding?

 

A) Vitamin A B) Vitamin B
C) Vitamin K D) Vitamin C
 
Answer & Explanation Answer: C) Vitamin K

Explanation:
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Q:

What is the basis of classifying various plant tissues as meristematic tissue and permanent tissue?

 

A) Size B) Dividing capacity
C) Location D) No option is correct
 
Answer & Explanation Answer: B) Dividing capacity

Explanation:
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Q:

Light is a ______________ wave.

 

A) longitudinal B) elastic
C) transverse D) mechanical
 
Answer & Explanation Answer: C) transverse

Explanation:
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Q:

The objective of ____________ is to make India a global information technology superpower.

 

A) NIC B) NASSCOM
C) Department of Information Technology D) State Bank of India
 
Answer & Explanation Answer: C) Department of Information Technology

Explanation:
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Q:

Apart from proposing atomic theory, what did John Dalton researched on?

 

A) Plants B) Colour blindness
C) Penicillin D) Plastic
 
Answer & Explanation Answer: B) Colour blindness

Explanation:
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Q:

Fill in the blank with the most appropriate option.

 

Ethanol is denatured to ___.

 

A) make it unsuitable for drinking B) make it suitable for drinking
C) increase its stability D) make it suitable as an antiseptic
 
Answer & Explanation Answer: A) make it unsuitable for drinking

Explanation:
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Q:

Isotopes have ______.

 

I. similar physical quantities and different chemical properties

II. different physical properties

III. similar chemical properties

 

A) Only I and II B) Only I and III
C) Only II and III D) All I, II and III
 
Answer & Explanation Answer: C) Only II and III

Explanation:
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