Q:

In the following question, out of the four alternatives, select the alternative which best expresses the meaning of the idiom/phrase.

To keep the wolf from the door

A) Avoid starvation	B) Crack the dea
C) Entry prohibited	D) Have a pleasant tour

Answer & Explanation Answer: A) Avoid starvation

Explanation:

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Q:

An ∝ particle is _____.

A) A hydrogen molecule	B) A helium nucleus
C) An atom of hydrogen	D) A proton

Answer & Explanation Answer: B) A helium nucleus

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Q:

In which of the following ${MgCl}_{2}$ is soluble?

A) Petrol	B) Acetone
C) Kerosene	D) Water

Answer & Explanation Answer: D) Water

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Q:

The monomer/monomers used for the synthesis of Nylon 6 is/are

A) hexamethylenediamine and adipic acid	B) caprolactam
C) urea and formaldehydeD.	D) phenol and formaldehyde

Answer & Explanation Answer: A) hexamethylenediamine and adipic acid

Explanation:

Nylon is made when the appropriate monomers (the chemical building blocks which make up polymers) are combined to form a long chain via a condensation polymerisation reaction. The monomers for nylon 6-6 are adipic acid and hexamethylene diamine

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Q:

pH of the human blood is ______.

A) Slightly Acidic	B) Highly Acidic
C) Slightly Basic	D) Highly Basic

Answer & Explanation Answer: C) Slightly Basic

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Q:

In the following question, four words are given out of which one word is incorrectly spelt. Select the incorrectly spelt word.

A) Usable	B) Defense
C) Inventor	D) Annaul

Answer & Explanation Answer: D) Annaul

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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.

Add fuel to the fire

A) Go from one bad situation to another	B) A cause becomes stronger when more people join
C) The flame will extinguish if it runs out of oil	D) Cause a situation to become worse

Answer & Explanation Answer: D) Cause a situation to become worse

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Q:

The potential difference between the terminals of an electric heater is 60 V when it draws a current of 4 A from the source. What current will the heater draw if the potential difference is increased to 127.5 V ?

A) 8.5 A	B) 24 A
C) 10 A	D) 12 A

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