Q:

Which of the following is false?

A) Hydrogen atom is roughly a third of the mass of tritium	B) Deuterium is called heavy hydrogen
C) Deuterium atom has 1 neutron	D) Protium is the rarest isotope of hydrogen

Answer & Explanation Answer: D) Protium is the rarest isotope of hydrogen

Explanation:

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Q:

What is the Greenhouse Effect?

A) The fall in population of plants due to human activity	B) It is the warming of earth's surface due to its atmosphere
C) The polluting effect of burning fossil fuels	D) The heating of the atmosphere due to depletion of the ozone layer

Answer & Explanation Answer: B) It is the warming of earth's surface due to its atmosphere

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Q:

Which of the following is not a constituent of biogas?

A) Carbon dioxide	B) Hydrogen Sulphide
C) Methane	D) Carbon Monoxide

Answer & Explanation Answer: A) Carbon dioxide

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 the appropriate option. Ifa sentence is free from error, select 'No Error'.

My elder son deals with (1)/ spare parts and manages (2)/ his bread and butter. (3)/ No Error (4)

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

Answer & Explanation Answer: A) 1

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Q:

In the given question, an idiom/phrase highlighted in bold is given in a sentence. Choose the most suitable meaning of the idiom/phrase.

I heard it on the grapevine that the vacancies are going to be increased this year for many posts.

A) To hear some official news about something	B) To inform people about something
C) To acquire information by unofficial communication	D) To be sure of something

Answer & Explanation Answer: C) To acquire information by unofficial communication

Explanation:

The idiom “to hear it on the grapevine” means to hear about something from informal communication or to hear a gossip. The above sentence talks about the rumour that is spread about the number of vacancies for various posts. Hence, option 3 is correct.

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Q:

On 24 January 2018, the Ministry of Women and Child Development launched a web based Rapid Reporting System for the ______.

A) Scheme for Adolescent Girls	B) Scheme for Widow women
C) Scheme for Acid attack victims	D) Scheme for divorced women

Answer & Explanation Answer: A) Scheme for Adolescent Girls

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Q:

To which country does the celebrated author and leadership speaker Robin Sharma belong?

A) Canada	B) India
C) Britain	D) USA

Answer & Explanation Answer: A) Canada

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Q:

How many diagonals are there in octagon?

A) 12	B) 14
C) 20	D) 24

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