Questions

Q:

The mass of a mole of NaCl is the

A) 58.44 gm/mol B) 57.25 gm/mol
C) 56.31 gm/mol D) 59.14 gm/mol
 
Answer & Explanation Answer: A) 58.44 gm/mol

Explanation:

To get the mass of a mole of NaCl, we need to add the molar atomic weights of the individual elements i.e, Na and Cl

Atomic weights of Na = 22.99 gm/mol  Cl = 35.45 gm/mol

 

Now, mass of a mole of NaCl = 22.99 + 35.45 = 58.44 gm/mol.

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Filed Under: Chemistry
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Q:

Improve the bracketed part of the sentence.
He jumped off the train while it (had been running).

A) has been running B) ran
C) was running D) No improvement
 
Answer & Explanation Answer: C) was running

Explanation:
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Filed Under: English
Exam Prep: Bank Exams

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Q:

Which of the following is a healthy blood pressure level?

A) 120/80 B) 140/90
C) 135/75 D) 130/70
 
Answer & Explanation Answer: A) 120/80

Explanation:

A normal reading would be any blood pressure below 120/80 mm Hg and above 90/60 mm Hg in an adult. If you're in the normal range, no medical intervention is needed.

However, you should maintain a healthy lifestyle and healthy weight to help prevent hypertension from developing.

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Filed Under: General Science
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Q:

The humidity of the air depends upon

A) Weather B) Temperature
C) Location D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

Humidity means the amount of watervapour present in the atmosphere. It depends on weather, location and temperature of the place.

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Filed Under: Physics
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Q:

Which must be true for metamorphism to occur?

A) The grain size must become smaller B) The process must take place underwater
C) The parent rock must be in solid form D) The parent rock must be igneous
 
Answer & Explanation Answer: C) The parent rock must be in solid form

Explanation:

Metamorphism is the method of changing the structure of a rock by using heat and temperature.

Hence, for this to happen the parent rock must be in solid form only. Therefore, option C) is true.

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Filed Under: Physics
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Q:

In a parliamentary system, from where are cabinet members drawn

A) Judicial branch B) Legislative branch
C) Executive branch D) All of the above
 
Answer & Explanation Answer: B) Legislative branch

Explanation:

In a parliamentary system, the members of the cabinet are drawn from the legislative branch.

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Filed Under: Indian Politics
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Q:

Which are the regional Commissions of the UN Economic and Social Council

A) Economic Commission for Europe, Economic Commission for Asia and Pacific B) Economic Commission for Africa
C) Economic Commission for Latin America and the Caribbean D) All the above
 
Answer & Explanation Answer: D) All the above

Explanation:
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Filed Under: World Organisations

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Q:

What has no beginning, end or middle?

Answer

A Donut or Doughnut. Anything in the shape of a torus.

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