Common Admission Test (CAT) Questions and Answers with Explanation

Q:

(1 + sinA)/(1 - sinA) is equal to?

A) (cosecA - 1)/(cosecA + 1)	B) (cosecA + 1)/(cosecA - 1)
C) (secA + 1)/(secA - 1)	D) (secA - 1)/(secA + 1)

Answer & Explanation Answer: B) (cosecA + 1)/(cosecA - 1)

Explanation:

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Filed Under: Quantitative Aptitude - Arithmetic Ability
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Q:

Which plant cell organelle contains its own dna and ribosomes?

A) mitochondria	B) Chloroplasts
C) Both A & B	D) Vacuole

Answer & Explanation Answer: C) Both A & B

Explanation:

The plant cell organelles, "The power house of the cell" mitochondria and the chloroplasts contains their own DNA and ribosomes.

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Filed Under: Biology
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Q:

Which of the following is not a semiconductor?

A) CdS	B) NaCl
C) Si	D) Ge

Answer & Explanation Answer: B) NaCl

Explanation:

Semiconductors are those materials that are neither good conductors nor the good insulators of heat and electricity. Silicon (Si), Germanium (Ge) and Cadmium Sulphide (CdS) are semiconductors which work as conductors in some special conditions only.

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Filed Under: Chemistry
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2 1423

Q:

Which of the following statements about enzymes is not true?

A) all enzymes have the same shape as their substrates	B) enzymes are proteins
C) enzymes work best at a specified ph	D) the shape of an enzyme allows it to do its job

Answer & Explanation Answer: A) all enzymes have the same shape as their substrates

Explanation:

All enzymes have the same shape as their substrates is the FALSE statement regarding enzymes.

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Filed Under: Biology
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Q:

Find the mirror image of the given figure if the mirror is placed at line MN.

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

Answer & Explanation Answer: A) C

Explanation:

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Filed Under: Image Analysis
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Q:

Which best describes the meaning of the word politics?

A) It is the power of the executive branch to carry out the laws.	B) It is the process by which the President commands the military.
C) It is the power of the executive branch to conduct foreign policy.	D) It determines who will benefit from, and who will pay for, public policies.

Answer & Explanation Answer: D) It determines who will benefit from, and who will pay for, public policies.

Explanation:

The word politics determines who will benefit from, and who will pay for, public policies.

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Filed Under: English
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1 1422

Q:

What is the value of triple point (solid, liquid and gas) of Water?

A) 273.16° C	B) -273.16 K
C) 273.16 K	D) 0° C

Answer & Explanation Answer: C) 273.16 K

Explanation:

The temperature at which a substance can exist in equilibrium in the liquid, solid, and gaseous states. The triple point of pure water is at 0.01°C (273.16K, 32.01°F).

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Filed Under: Chemistry
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Q:

If a : b is 32 : 35 and b : c is 21 : 32, then a : c is?

A) 5 : 3	B) 3 : 5
C) 1 : 1	D) 5 : 7

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