CAT Questions

Q:

Two pipes A and B can fill a tank in 16 hrs and 12 hrs respectively. The capacity of the tank is 240 liters. Both the pipes are opened simultaneously and closed after 2 hrs. How much more water need to fill the tank?

A) 70 lit B) 170 lit
C) 90 lit D) 190 lit
 
Answer & Explanation Answer: B) 170 lit

Explanation:

Given A alone can fill the tank of capacity 240 lit in 16 hrs.

=> A can fill in 1 hr = 240/16 = 15 lit

=> B alone can fill the tank of capacity 240 lit in 12 hrs.

=> B can fill in 1 hr = 240/12 = 20 lit

Now, (A + B) in 1 hr = 15 + 20 = 35 lit

But they are opened for 2 hrs

=> 2 x 35 = 70 lit rae filled

Remaining water to be filled in tank of 240 lit = 240 - 70 = 170 lit.

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Filed Under: Pipes and Cistern
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20 9611
Q:

A train moving at 2/3 rd of its normal speed reaches its destination 20 minutes late. Find the normal time taken ?

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

Explanation:

Let the original speed and time is S and T
then distance = S x T
Now the speed changes to 2/3S and T is T+20
As the distance is same
S x T = 2/3Sx(T+20)
solving this we get t = 40 minutes
=40/60 = 2/3 hour

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Filed Under: Problems on Trains
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5 9610
Q:

Website always has

A) Address B) Information
C) Attachments D) Images
 
Answer & Explanation Answer: A) Address

Explanation:

Website always has an address whether it has images, any information or any attchments in it or not but it must has an address. 

Website_always_has1551876614.jpg image

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6 9609
Q:

When combining with nonmetallic atoms, metallic atoms generally will

A) Lose electrons and forms cations B) Gain electrons and forms anions
C) Lose electrons and forms anions D) Gain electrons and forms cations
 
Answer & Explanation Answer: A) Lose electrons and forms cations

Explanation:

When combining with nonmetallic atoms, metallic atoms generally will Lose electrons and forms cations.

 

As the ionization energy of te metals are very low, so they can easily lose electrons and form positively charged ion called cations.

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Filed Under: Chemistry
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3 9606
Q:

Adverbs can modify all of the following except

A) Nouns B) Verbs
C) Adjectives D) Other adverbs
 
Answer & Explanation Answer: A) Nouns

Explanation:

An adverb is a word that modifies a verb, adjective, determiner, clause, preposition, or sentence.

Adverbs can modify all of the following except nouns.

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Filed Under: English
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6 9604
Q:

Solve the math puzzle given below?

math_puzzle1541075516.jpg image

A) 14 B) 10
C) 9 D) 8
 
Answer & Explanation Answer: B) 10

Explanation:
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Filed Under: Math Puzzles
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78 9598
Q:

Which of the following vitamin helps in clotting of blood?

A) Vitamin K B) Vitamin D
C) Vitamin B1 D) Vitamin B2
 
Answer & Explanation Answer: A) Vitamin K

Explanation:

Vitamin K helps in clotting of blood. It is used by the body to help blood clot.

 

Warfarin (Coumadin) is used to slow blood clotting. By helping the blood clot, vitamin K might decrease the effectiveness of warfarin (Coumadin).

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Filed Under: Biology
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3 9578
Q:

The opposite of right is the opposite of

A) Left B) Wrong
C) Give D) Take
 
Answer & Explanation Answer: D) Take

Explanation:

The opposite of right is left. The opposite of left is take. And the opposite of take is give.

 

Hence, the opposite of right is the opposite of take which is left.

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