Atom is made up of____________different kinds of subatomic particles:...? Mcqs

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Atom is made up of____________different kinds of subatomic particles:...?

(A) Three
(B) Two

(C) Four
(D) None

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Near Earth's surface g = ______...?

(A) 10 ms^-2
(B) 1.6 ms^-1

(C) Both (a) and (b)
(D) None of these

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The SI standard of time is based on_____________...?

(A) the daily rotation of the earth
(B) the frequency of light emitted by Kr86

(C) the yearly revolution of the earth about the sun
(D) a precision pendulum clock

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In that the half of the Earth which is facing the sun, there is...?

(A) Day
(B) Night

(C) Winter
(D) Both A and B

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A moderator is used in nuclear reactor in order to ...?

(A) Accelerate the neutrons
(B) Slow down the speed of the neutrons

(C) Increase the number of elections
(D) Decrease the number of electrons

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The term ‘white coal’ is sometimes referred to which of the following...?

(A) Geothermal energy
(B) Wind energy

(C) Hydroelectricity
(D) Biomass energy

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_________ is anything that takes up space and has mass....?

(A) Matter
(B) Gravity

(C) Energy
(D) Plasma

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Water is a highly effective coolant for a car engine because _________...?

(A) Water is good conductor of heat
(B) Water has very high specific heat capacity

(C) Water boils at a comparatively high temperature
(D) Evaporation of water produces lot of cooling

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When Earth is between the Moon and the Sun, this forms a shadow of the Earth, and the Moon passes through this shadow of the Earth, causing a ______...?

(A) Solar Eclipse
(B) Lunar Eclipse

(C) Moon Shadow
(D) Earth Shadow

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Which of the following is the most toxic gas...?

(A) Carbon dioxide
(B) Carbon monoxide

(C) Nitrogen
(D) Hydrogen

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