Common Admission Test (CAT) Questions and Answers with Explanation

Q:

A world wide web contains web pages

A) residing in many computers linked together using HTML.	B) with links to other web pages.
C) residing in many computers.	D) created using HTML.

Answer & Explanation Answer: A) residing in many computers linked together using HTML.

Explanation:

A_world_wide_web_contains_web_pages1551768792.jpg image

A world wide web contains web pages residing in many computers linked together using HTML.

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Filed Under: Web Technology
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Q:

Mother’s age today is thrice as her daughter’s. After 10 years it would be just double. How old is the daughter today ?

A) 8 years	B) 9 years
C) 10 years	D) 11 years

Answer & Explanation Answer: C) 10 years

Explanation:

Let the age of the daughter today be ‘x’ years.
Mother’s age today = 3x years
After 10 years, we have
3x + 10 = 2(x + 10)
x = 10 years.

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Filed Under: Problems on Ages
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Q:

Choose the word which gives best meaning to the sentence from the given options.

His recent success ______ him more arrogant than what he used to be

A) make	B) have make
C) was making	D) has made

Answer & Explanation Answer: D) has made

Explanation:

HIS RECENT SUCCESS HAS MADE HIM MORE ARROGANT THAN WHAT HE USED.

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Filed Under: Logical Sequence of Words
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Q:

When water freezes its density

A) decreases	B) remains constant
C) increases	D) become zero

Answer & Explanation Answer: A) decreases

Explanation:

When water freezes its density decreases.

Water at ordinary temperatures contracts and increases in density as it is cooled, like most substances. But at about 4°C it reaches a maximum density and then decreases in density as it approaches the freezing point.

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Filed Under: Chemistry
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50 14797

Q:

Find the quadratic equations whose roots are the reciprocals of the roots of $2 x^{2} + 5 x + 3$ ?

A) $3 x^{2} + 5 x + 2 = 0$

B) $5 x^{2} + 3 x + 2 = 0$

C) $3 x^{2} - 5 x - 2 = 0$

D) None

A) A	B) B
C) C	D) D

Answer & Explanation Answer: A) A

Explanation:

The quadratic equation whose roots are reciprocal of $2 x^{2} + 5 x + 3 = 0$ can be obtained by replacing x by 1/x.

Hence, 2(1/x)(1/x)+ 5(1/x) + 3 = 0

=> $3 x^{2} + 5 x + 2 = 0$

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Filed Under: Mathematical Operations
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49 14775

Q:

In the following sum, “?” stands for which digit ?

8 + ?8 + 28 + 83 + 8? = 2?8

A) 4	B) 3
C) 2	D) 1

Answer & Explanation Answer: D) 1

Explanation:

By trial and error method from the given options,

'1' satisfies the above given equation.

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Filed Under: Number Series
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Q:

The filament of an electric bulb is made of

A) tungsten	B) nichrome
C) graphite	D) iron

Answer & Explanation Answer: A) tungsten

Explanation:

A filament is a metal wire that glows when electricity is channeled into it. The filament of an electric bulb is made of Tunsten.

The_filament_of_an_electric_bulb_is_made_of1554113110.jpg image

Because of its high melting point and its greatest tensile strength, it makes for a good filament in light bulbs.

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Filed Under: General Science
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Q:

Find the odd man out of the following number series?

1/2, 1, 3/2, 6, 5/2, 3

A) 1	B) 6
C) 5/2	D) 3/2

Answer & Explanation Answer: B) 6

Explanation:

The given series is 1/2, 1, 3/2, 6, 5/2, 3

1/2

1/2 + 1/2 = 1

1 + 1/2 = 3/2

3/2 + 1/2 = 2 (Not 6)

2 + 1/2 = 5/2

5/2 + 1/2 = 3

Hence, the odd man in the given number series is 6.

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Filed Under: Odd Man Out
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