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Q:

A train covers 180 km distance in 5 hours. Another train covers the same distance in 1 hour less. What is the difference in the distances covered by these trains in one hour if they are moving in the same direction?

A) 15 kms B) 9 kms
C) 6 kms D) 18 kms
 
Answer & Explanation Answer: B) 9 kms

Explanation:

The first train covers 180 kms in 5 hrs

=> Speed = 180/5 = 36 kmph

Now the second train covers the same distance in 1 hour less than the first train => 4 hrs

=> Speed of the second train = 180/4 = 45 kmph

Now, required difference in distance in 1 hour = 45 - 36 = 9 kms.

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Filed Under: Time and Distance
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11 8661
Q:

The layer of air around the earth is known as

A) Troposphere B) Ionosphere
C) Atmosphere D) Ozone layer
 
Answer & Explanation Answer: C) Atmosphere

Explanation:

The layer of air around the earth is known as Atmosphere. And this atmosphere has 4 layers like troposhere, stratosphere, ionosphere and mesosphere.

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Filed Under: General Science
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34 8659
Q:

A take twice as much time as B or thrice as much time to finish a piece of work. Working together, they can finish the work in 2 days. B can do the work alone in ?

A) 3 hrs B) 6 hrs
C) 7 hrs D) 5 hrs
 
Answer & Explanation Answer: B) 6 hrs

Explanation:

Suppose A, B and C take x, x/2 and x/3 respectively to finish the work.
Then, (1/x + 2/x + 3/x) = 1/2
6/x = 1/2 => x = 12
So, B takes 6 hours to finish the work.

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Filed Under: Time and Work
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5 8656
Q:

If the letters of the word VERMA are arranged in all possible ways and these words are written out as in a dictionary, then the rank of the word VERMA is :

A) 108 B) 117
C) 810 D) 180
 
Answer & Explanation Answer: A) 108

Explanation:

The number of words beign with A is 4! 

The number of words beign with E is 4! 

The number of words beign with M is 4! 

The number of words beign with R is 4!

 

Number of words beign with VA is 3! 

Words beign with VE are VEAMR 

VEARM

VEMAR

VEMRA

VERAM

VERMA 

Therefore, The Rank of the word VERMA = 4 x 4! + 3! + 6 = 96 + 6 + 6 =108             

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Filed Under: Permutations and Combinations
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4 8651
Q:

Select a figure from the four alternatives that would complete the Figure Matrix.

     1366338089-121484716755.jpg image

   1366338089-131484716775.jpg image

     (1)   (2)   (3)   (4)

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

Explanation:

Similar small figures are increasing by one in each of the bigger figure.

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Filed Under: Figure Matrix
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17 8636
Q:

The outermost layer of the sun is called

A) Corona B) Chromosphere
C) Radiative Zone D) Transition Region
 
Answer & Explanation Answer: A) Corona

Explanation:

The outermost layer of the sun is called The Corona.

 

The inner layers are the Core, Radiative Zone and Convection Zone. The outer layers are the Photosphere, the Chromosphere, the Transition Region and the Corona. IRIS will focus its investigation on the Chromosphere and Transition Region.

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Filed Under: General Science
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10 8622
Q:

Highest Bajra producing state in India?

A) Rajasthan B) Gujarat
C) Uttar Pradesh D) Haryana
 
Answer & Explanation Answer: A) Rajasthan

Explanation:
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Filed Under: Indian Geography
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15 8617
Q:

Wild animals are not considered a natural resource.

A) TRUE B) FALSE
Answer & Explanation Answer: B) FALSE

Explanation:

Natural resources are resources taken from nature to satisfy our needs. As wild animals are on the earth naturally, they are considered as natural resources.


 


Hence, the given statement is false.

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Subject: General Science
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3 8615