Common Admission Test (CAT) Questions and Answers with Explanation

Q:

Who termed the Indian Constitution as "Quasi Federal" ?

A) D.D. Basu	B) K.C. Wheare
C) Ivor Jennings	D) M.V. Paylee

Answer & Explanation Answer: B) K.C. Wheare

Explanation:

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Q:

From a container of wine, a thief has stolen 15 litres of wine and replaced it with same quantity of water. He again repeated the same process. Thus, in three attempts the ratio of wine and water became 343 : 169. The initial amount of wine in the container was:

A) 75 litres	B) 100 litres
C) 150 litres	D) 120 litres

Answer & Explanation Answer: D) 120 litres

Explanation:

$\frac{w i n e (l e f t)}{w i n e (a d d e d)} = \frac{343}{169}$

It means $\frac{w i n e (l e f t)}{w i n e (i n i t i a l a m o u n t)} = \frac{343}{512}$ (since 343 + 169 = 512)

Thus, $343 x = 512 x {(1 - \frac{15}{k})}^{3}$

$\frac{343}{512} = {(\frac{7}{8})}^{3} = {(1 - \frac{15}{k})}^{3}$

$(1 - \frac{15}{k}) = \frac{7}{8} = (1 - \frac{1}{8})$

Thus the initial amount of wine was 120 liters.

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Q:

How many 3-digit numbers can be formed from the digits 2, 3, 5, 6, 7 and 9 which are divisible by 5 and none of the digits is repeated ?

A) 15	B) 20
C) 5	D) 10

Answer & Explanation Answer: B) 20

Explanation:

Since each number to be divisible by 5, we must have 5 0r 0 at the units place. But in given digits we have only 5.

So, there is one way of doing it.

Tens place can be filled by any of the remaining 5 numbers.So, there are 5 ways of filling the tens place.

The hundreds place can now be filled by any of the remaining 4 digits. So, there are 4 ways of filling it.

Required number of numbers = (1 x 5 x 4) = 20.

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Q:

Where does a computer add and compare data?

A) CPU chip	B) Hard disk drive
C) Memeory chip	D) Disc drive

Answer & Explanation Answer: A) CPU chip

Explanation:

Central Processing Unit is the main part of the computer.

where_does_a_computer_add_and_compare_data1553491569.jpg image

CPU chip or main processor is that part in the computer which performs or executes all the instructions or programs.

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Q:

Chromite : Chromium : : Ilmenite :?

A) Cobalt	B) Titanium
C) Limestone	D) Manganese

Answer & Explanation Answer: B) Titanium

Explanation:

Chromite is a mineral of chromium and ilmenite is a mineral of titanium

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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 8018

Q:

Is SiCl4 polar or nonpolar?

A) Polar	B) non polar
C) Both A & B	D) None of the above

Answer & Explanation Answer: B) non polar

Explanation:

SiCl4 is a non polar as the forces of attraction between the shared pair of electrons are equal and the molecule is symmetric.

is_sicl4_polar_or_nonpolar1537793915.jpg image

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Filed Under: Chemistry
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Q:

M, K, J, T, R, D and W are seven members of a family. There are two married couples among them belonging to two different generations. Each of them has a different choice of cuisine - Chinese, Continental, Thai, Punjabi, South Indian, Gujarati and Malwani. The grandfather in the family likes Gujarati food. None of the ladies likes Continental or Thai food. T is the son of M, who likes Chinese food. W is J's daughter-in-law and she likes South Indian food. K is grandfather of D, who likes Punjabi food. J is mother of R, who likes Continental food.

Question 1:

How is R related to D?

a) Father b) Brother c) Uncle d) Data inadequate

Question 2:

Which of the following group contains one each from the same generations?

a) JRT b) JRW c) MRD d) MWT

Answer

Answer 1:
c) Uncle
R is Uncle to D.

Answer 2:
a) JRT
JRT are one each from the same generations.

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