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Q:

A train with 120 wagons crosses Arun who is going in the same direction, in 36 seconds. It travels for half an hour from the time it starts overtaking the Arun ( he is riding on the horse) before it starts overtaking the Sriram( who is also riding on his horse) coming from the opposite direction in 24 seconds. In how much time (in seconds) after the train has crossed the Sriram do the Arun meets to Sriram?

A) 3560 sec B) 3600 sec
C) 3576 sec D) can't be determined
 
Answer & Explanation Answer: C) 3576 sec

Explanation:

Let the length of the train be L metres and speeds of the train Arun and Sriram be R, A and S respectively, then 

       LR-A=36 ---------- (i) 

and LR+K=24 ---------(ii)

 

From eq.(i) and (ii)

              3(R - A ) = 2 (R + K) 

⇒  R = 3A + 2K 

 

In 30 minutes (i.e 1800 seconds), the train covers 1800R (distance) but the Arun also covers 1800 A (distance) in the same time. Therefore distance between Arun and Sriram, when the train has just crossed Sriram

               = 1800 ( R - A) - 24 ( A + K)

 

 Time required = 1800(R-A)-24(A+K)(A+K)

 

= (3600 - 24) = 3576 s                            

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Filed Under: Time and Distance

Q:

In How many ways is it possible to make a selection by taking any number of 15 fruits, namely 3 oranges, 5 apples and 7 mangoes?

A) 131 B) 191
C) 68 D) 3720
 
Answer & Explanation Answer: B) 191

Explanation:

Out of 15 fruits, 7 are alike of one kind, 5 are alike of a second kind and 3 are alike of a third kind.

Hence, the required number of ways = [ (7+1) (5+1) (3+1) -1] =191

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Filed Under: Permutations and Combinations

Q:

The Largest producer of Gold in the world is 

A) Australia B) Canada
C) Russia D) South Africa
 
Answer & Explanation Answer: D) South Africa

Explanation:
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Filed Under: World Geography

Q:

Soils, which have undergone gleying and are associated with marshes , swamps or poorly drained upland are called ____

A) calcimorphous soils B) hydromorphic soils
C) halomorphic soils D) sierozems
 
Answer & Explanation Answer: B) hydromorphic soils

Explanation:
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Filed Under: World Geography

Q:

The prices at which the government purchases food grains for maintaining the Public Distribution system (PDS) and for building up buffer - stock is known as :

A) minimum support prices B) procurement prices
C) issue prices D) ceiling prices
 
Answer & Explanation Answer: B) procurement prices

Explanation:
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Filed Under: Indian Economy

Q:

Which of the following Schemes was launched to promote basic education in India and attract children in School going age to attend the classes?

A) Pulse Polio Abhiyan B) Operation Flood
C) Mid-Day Meal Schema D) Operation Black Board
 
Answer & Explanation Answer: C) Mid-Day Meal Schema

Explanation:
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Filed Under: Indian Economy

Q:

The money which Government of India spends on the development of infrastructure in country comes from which of the following sources?

I. Loan from world Bank/ADB etc

II. Taxes collected  from the people 

III. Loan from RBI

A) only I B) only II
C) only III D) All I,II and III
 
Answer & Explanation Answer: D) All I,II and III

Explanation:
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Filed Under: Indian Economy

Q:

For Distribution of powers between the Union and the States, the Constitution of India introduces three lists. Which two of the following Articles govern the distribution  of powers:

A) Articles 4 and 5 B) Articles 56 amd 57
C) Articles 141 and 142 D) Articles 245 and 246
 
Answer & Explanation Answer: D) Articles 245 and 246

Explanation:
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Filed Under: Indian Politics