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Q:

Minute hand overlaps hour hand in 65 mins. In how many days it will gain 1440 hours ?

A) 57 days B) 58 days
C) 60 days D) 61 days
 
Answer & Explanation Answer: C) 60 days

Explanation:

In this problem , it has considered that 65 mins = 1hr
So mins has increased by 5 mins so multiply 5 x 24 = 120 mins extra ,
That is now per day it adds 2hr extra, so divide 1440/26 = 59.384 days =~ 60 days.

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Q:

Water is a compound because it?

A) it contains two different elements joined by chemical bond B) it contains hydrogen & oxygen
C) it exists as solid, liquid or gas D) it cannot be split up into simpler substances by chemicals means
 
Answer & Explanation Answer: A) it contains two different elements joined by chemical bond

Explanation:

We know that All compounds are molecules, but not all molecules are compounds.

Water is a molecule because it is made from atoms that have been chemically combined. It is also a compound because the atoms that make water are not all the same - some are oxygen and some are hydrogen.

 

Hence, Water is a molecule and a compound.

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Filed Under: General Science
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Q:

The third vehicle in Buddhism was Known as

A) Mahasanghika B) Zen
C) Vajrayana D) None of these
 
Answer & Explanation Answer: C) Vajrayana

Explanation:
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Filed Under: Indian History

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Q:

Heavy water is

A) PH7 B) rain water
C) deuterium oxide D) tritium oxide
 
Answer & Explanation Answer: C) deuterium oxide

Explanation:
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Filed Under: General Science

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Q:

Net National product of a country is

A) GDP minus depreciation allowances B) GDP plus net income from abroad
C) GNP minus net income from abroad D) GNP minus depreciation allowances
 
Answer & Explanation Answer: D) GNP minus depreciation allowances

Explanation:
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Filed Under: Indian Economy

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Q:

Water has maximum density at............

A) 0 C B) -15 C
C) 4 C D) 15 C
 
Answer & Explanation Answer: C) 4 C

Explanation:
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Filed Under: Physics

11 6617
Q:

On which day ' National Science Day ' is celebrated in India ?

A) February 23 B) February 25
C) February 26 D) February 28
 
Answer & Explanation Answer: D) February 28

Explanation:

National Science Day is celebrated in India on 28 February each year to mark the discovery of the Raman effect by Indian physicist Sir Chandrashekhara Venkata Raman on 28 February 1928.

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Filed Under: Physics
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Q:

The memory unit is one part of

A) Input Device B) Central Processing Unit
C) Control Unit D) Output device
 
Answer & Explanation Answer: B) Central Processing Unit

Explanation:

In a computer, memory is one part of Central processing unit i.e, CPU.

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