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Q:

Oxygen released during photosynthesis comes from

A) Sugar B) Water
C) Co2 D) Pyruvic acid
 
Answer & Explanation Answer: B) Water

Explanation:

Oxygen released during photosynthesis comes from splitting of water.

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Filed Under: General Science
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Q:

In which decade was the SPICE simulator introduced

A) 1962 B) 1972
C) 1982 D) 1992
 
Answer & Explanation Answer: B) 1972

Explanation:

SPICE (Simulation Program with Integrated Circuit Emphasis) was introduced in May 1972 by the University of Berkeley, California.

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Filed Under: World History
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Q:

The taper on the lathe spindle is

A) 1 in 10 B) 1 in 20
C) 1 in 15 D) 1 in 25
 
Answer & Explanation Answer: B) 1 in 20

Explanation:
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Filed Under: Physics
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Q:

The term photon refers to

A) light ray B) sub atomic particle
C) radiation D) None of the above
 
Answer & Explanation Answer: B) sub atomic particle

Explanation:

The photon is a type of elementary particle, the quantum of the electromagnetic field including electromagnetic radiation such as light, and the force carrier for the electromagnetic force. The photon has zero rest mass and always moves at the speed of light within a vacuum.

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Filed Under: Physics
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Q:

Macroeconomics is the study of

A) behavior of economy B) performance of economy
C) changes in economy D) All of the above
 
Answer & Explanation Answer: D) All of the above

Explanation:

Macroeconomics is the study of overall aggregate changes, behavior and performance of the economy of the country i.e, unemployment, GDP, inflation, etc...

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Filed Under: Indian Economy
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Q:

Which determines the frequency of a sound wave?

A) Amplitude B) Speed
C) Source D) Medium
 
Answer & Explanation Answer: A) Amplitude

Explanation:

The frequency of a sound wave is determined by the amplitude of the wave. As amplitude of the wave is high the frequency of the wave will also be high.

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Filed Under: Physics
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Q:

The ratio of efficiencies of two filling pipes is 4 : 5. There is a third emptying pipe which efficiency is two third of the average efficiency of first two filling pipes can empty a filled tank in 36 minutes. In how much time both the filling pipes can fill the tank when it is empty?

A) 16 min B) 12 min
C) 14 min D) 20 min
 
Answer & Explanation Answer: B) 12 min

Explanation:

Let the efficiencies of filling pipes is 4p and 5p respectively.

Efficiency of pipe which empty the tank = 2/3 x 9p/2 = 3p

Total work = 3p x 36 = 108p

 

Time to fill the tank by both the pipes = 108p/9p = 12 min.

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Filed Under: Pipes and Cistern
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Q:

The standard English sentence order does which of the following?

A) Verb-Subject-Object B) Subject-Verb-Object
C) Verb-Object-Subject D) Object-Verb-Subject
 
Answer & Explanation Answer: B) Subject-Verb-Object

Explanation:

The standard English sentence order is Subject-Verb-Object.

 

For example ::

In the sentence, Why did you (S) do (V) that (O)?

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Filed Under: English
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