Exams Questions and Answers

Q:

Which is an example of an endothermic reaction?

A) combustion	B) mix of CaO with water
C) coal is burnt	D) photosynthesis

Answer & Explanation Answer: D) photosynthesis

Explanation:

A chemical reaction in which involves the absorption of heat from the environment is called a Endothermic reaction.

Examples : Dissolving ammonium chloride in water, photosynthesis, melting ice cubes, mixing of potassium chloride with water,...

In the contrast, chemical reactions involving release of heat are known as exothermic reactions.

Examples : Combustion, coal is burnt, mix of CaO with water,...

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Q:

Innate immune system defenses include

A) phagocytosis	B) B cells
C) plasma cells	D) T cells

Answer & Explanation Answer: A) phagocytosis

Explanation:

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Q:

If 35% of A's income is equal to 25% of B's income, then the ratio of A's income to B's income is

A) 7:5	B) 5:7
C) 4:7	D) 4:3

Answer & Explanation Answer: B) 5:7

Explanation:

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Filed Under: Percentage
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Q:

In the following question, out of the four alternatives, select the alternative which is the best substitute of the words/sentence.

An ornamented staff carried by rulers on ceremonial occasions as a symbol of sovereignty

A) Spectacle	B) Receptacle
C) Sceptre	D) Zephyr

Answer & Explanation Answer: C) Sceptre

Explanation:

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Q:

In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/Phrase.
To go through fire and water

A) To scold someone	B) To experience many dangers in order to achieve something
C) To act without restraints	D) Something which hurts

Answer & Explanation Answer: B) To experience many dangers in order to achieve something

Explanation:

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Q:

Improve the bracketed part of the sentence.
I don't want an award (for help to you).

A) to have helped you	B) for helping you
C) for helping to you	D) no improvement

Answer & Explanation Answer: B) for helping you

Explanation:

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Q:

Which one of the following statements about lymph is correct?

A) Lymph is formed due to leakage of blood through capillaries.	B) Lymph contains blood cells such as RBC.
C) Lymph is also circulated by the blood circulating heart.	D) Lymph only transports hormones.

Answer & Explanation Answer: C) Lymph is also circulated by the blood circulating heart.

Explanation:

The lymphatic system is a complex system of fluid drainage and transport, and immune response and disease resistance. Fluid that is forced out of the bloodstream during normal circulation is filtered through lymph nodes to remove bacteria, abnormal cells and other matter. This fluid is then transported back into the bloodstream via the lymph vessels. Lymph only moves in one direction, toward the heart.

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Filed Under: Biology
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Q:

A, B and C can complete the work in 4, 5 and 6 hours respectively. If they all work together and receive Rs. 777 as wages then find the share of A.

A) Rs. 300	B) Rs. 315
C) Rs. 326	D) Rs. 175

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