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 General Science Questions

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Q:

Which energy source generates the least greenhouse gases?

A) Fossil fuels energy B) Nuclear energy
C) Solar energy D) All of the above
 
Answer & Explanation Answer: A) Fossil fuels energy

Explanation:

Fossil fuels energy source generates the least greenhouse gases. Of them, i.e, oil, natural gas and coal, natural gas source generates the least greenhouse gases.

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Q:

In satellite based communication VSAT stands for

Answer

VSAT stands for Very Small Aperture Terminal is a satellite communications system that serves home and business users.

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Q:

Term ‘Visible Horizon’ in astronomy is defined as:-

A) The circle of contact of the earth and the cone of visual rays passing through the meridian of the place. B) The circle of contact of the earth and the cone of visual rays not passing through the meridian of the place.
C) The circle of contact of the earth and the cone of visual rays passing through the point of observation. D) The circle of contact of the earth and the cone of visual rays not passing through the point of observation.
 
Answer & Explanation Answer: C) The circle of contact of the earth and the cone of visual rays passing through the point of observation.

Explanation:

Visible Horizon is the circle of contract, with the earth, of the cone of visual rays passing through the point of observation.

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Q:

Choose the correct order of electrical resistivity of metals.

A) Ag > W > Ni > Hg   B) Hg > Ni > W > Ag
C) Ag > Ni > Hg > W D) Ag > W > Hg > Ni
 
Answer & Explanation Answer: B) Hg > Ni > W > Ag

Explanation:
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Q:

The head mirror used by ENT doctors is

A) plano-convex B) convex
C) concave D) plane
 
Answer & Explanation Answer: C) concave

Explanation:

The head mirror used by ENT doctors is concave.

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Q:

Credit of developing polio vaccine goes to

A) J.L. Baird B) Selman Waksman
C) Both A & B D) Jones Salk
 
Answer & Explanation Answer: D) Jones Salk

Explanation:
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Q:

Which of the following is a healthy blood pressure level?

A) 120/80 mmHg B) 140/90 mmHg
C) 90/60 mmHg D) 120/140 mmHg
 
Answer & Explanation Answer: A) 120/80 mmHg

Explanation:

Healthy blood pressure ranges from 120/80 to 90/60.

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Q:

The term ageism refers to

A) judging people on the basis of chronological age B) the demographics of the population pyramid
C) the veneration of the elderly D) the view of society held by older people
 
Answer & Explanation Answer: A) judging people on the basis of chronological age

Explanation:

The term ageism refers to judging people on the basis of chronological age. It is a discrimination against individuals or groups on the basis of their age.

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