Q:

Which compressor is usually used in AC?

A) Centrifugal	B) Rotary
C) Reciprocating	D) Axial

Answer & Explanation Answer: C) Reciprocating

Explanation:

A compressor is a mechanical device that increases the pressure of a gas by reducing its volume. An air compressor is a specific type of gas compressor. The capacity of the air conditioning depends entirely on the capacity of the compressor. The reciprocating compressor is usually used in AC.

Which_compressor_is_usually_used_in_AC1559283550.jpg image

The reciprocating compressor have piston and cylinder arrangement like the automotive engine. The reciprocating motion of the piston due to external power compresses the refrigerant inside the cylinder.

There are three types of reciprocating compressors:

hermetically sealed,

semi-hermetically sealed and

open type.

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Q:

Out of the four alternatives, choose the one which can be substituted for the given words/sentences and click the button corresponding to it.
Thing that can be felt or touched

A) Pandemic	B) Palpable
C) Paltry	D) Panchromatic

Answer & Explanation Answer: B) Palpable

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.

Scotfree

A) To escape from captivity	B) Be free of all responsibilities
C) To Get something unexpected	D) Without suffering any punishment or injury

Answer & Explanation Answer: D) Without suffering any punishment or injury

Explanation:

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Q:

In the following question, some part of the sentence may have errors. Find out which part of the sentence has an error and select theappropriate option. If a sentence is free from error, select 'No Error'.

Money bills could only be introduced in the Lok Sabha, (1)/ and upon being passed, are sent to the Rajya Sabha, (2)/ where it can be deliberated upon forupto 14 days. (3)/ No error (4)

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

Answer & Explanation Answer: A) 1

Explanation:

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Q:

Which best describes the nucleus of an atom?

A) It is the densest part of the atom	B) It has neutrons
C) It has protons	D) All of the above

Answer & Explanation Answer: D) All of the above

Explanation:

The nucleus of an atom is the densest part of an atom. It contains the protons and neutrons of an atom.

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Q:

Which among the following has lowest electron affinity?

A) Fluorine	B) Chlorine
C) Bromine	D) Argon

Answer & Explanation Answer: D) Argon

Explanation:

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Q:

A molecule of dna is a polymer composed of

A) Amines	B) Nuceotides
C) Chromosomes	D) Fattyacids

Answer & Explanation Answer: B) Nuceotides

Explanation:

A molecule of DNA is a polymer composed of nucleotides. Each nucleotide is composed of a nitrogenous base, a five-carbon sugar (deoxyribose), and a phosphate group.

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Q:

In 2015, which of the following banks was the first bank to tie up with Indian Railways to sell rail tickets through their website?

A) ICICI Bank	B) SBI
C) Axis Bank	D) HDFC Bank

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