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Q:

"When a card placed over a tumbler is flicked with the finger, the coin placed over it falls in the tumbler".

A) Law of conservation of energy B) Newton's third law of motion
C) Law of Inertia D) Law of conservation of momentum
 
Answer & Explanation Answer: C) Law of Inertia

Explanation:
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Filed Under: Physics
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Q:

Land is considered a resource because it

A) is used to produce things B) requires labor to be useful
C) is always available to use D) costs little or nothing to use
 
Answer & Explanation Answer: A) is used to produce things

Explanation:

Land is considered as an important resource because it is useful in producing many things. For example, in agriculture, land is used for cultivating the crop, in industrial use, it is used for constructing factories and to make products that we use.

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Filed Under: Physics
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Q:

The single most important invention to farmers is the

A) Tractor B) Automobile
C) Grain solo D) Cotton gin
 
Answer & Explanation Answer: A) Tractor

Explanation:

Tractor was the single most important invention to farmers.

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Filed Under: Indian History
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Q:

The speed of a boat when travelling downstream is 32 km/h, whereas when travelling upstream it is 28 km/h. What is the speed of the boat in still water?

A) 27 km/h B) 29 km/h
C) 31 km/h D) Cannot be determined
 
Answer & Explanation Answer:

Explanation:

Ans.  Suppose the speed of boat in still water is x km/h and speed of stream is y km/h

Speedof boat in downstream = (x + y) km/h x+ y = 32 …(i) 

Speed of boat in upstream = (x – y) km/h

x – y = 28 …(ii)

Add. Eqs. (i) and (ii), we get 2x = 60

x = 30 km/h

 

 

 

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Filed Under: English
Exam Prep: CAT , GRE , TOEFL

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Q:

Largest sea in the world

A) Mediterranean sea B) Philippine sea
C) Black sea D) Red sea
 
Answer & Explanation Answer: B) Philippine sea

Explanation:

Largest sea in the world is Philippine sea.

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Filed Under: Longest, Shortest, Deepest
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Q:

The longest sea beach in India is

A) Chapora beach B) Diu beach
C) Aksa beach D) Marina beach
 
Answer & Explanation Answer: D) Marina beach

Explanation:
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Filed Under: Longest, Shortest, Deepest

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Q:

Instrument for measuring time is called _____ .

A) Diagometer B) Anemometer
C) Durometer D) Chronometer
 
Answer & Explanation Answer: D) Chronometer

Explanation:
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Filed Under: Physics
Exam Prep: Bank Exams

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Q:

Which best describes the fossil record?

A) The fossil record provides evidence of a common ancestor to many species B) The fossil record is inaccurate because scientists are not able to date fossils
C) The fossil record cannot provide evidence of evolution D) The fossil record provides evidence that disputes the theory of evolution
 
Answer & Explanation Answer: A) The fossil record provides evidence of a common ancestor to many species

Explanation:

A fossil is a traces or remainings of plants and animals that lived in the past. The fossil record provides evidence of a common ancestor to many species is the option that best describes the fossil record.

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Filed Under: General Science
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