The sky appears blue because the earth’s atmosphere __________...? Mcqs

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The sky appears blue because the earth’s atmosphere __________...?

(A) Scatters blue light
(B) Reflects blue light

(C) Transmits blue light
(D) Has actual blue cover

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Which one of the following elements the drum of a Photostat machine is made up of: _________...?

(A) Aluminium
(B) Selenium

(C) Barium
(D) None of these

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What is the direction of the magnetic field lines inside a bar magnet...?

(A) From north pole to south pole
(B) South pole to north pole

(C) From side to side
(D) There are no magnetic field lines

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The motion of a falling ball towards Earth is due to the _____...?

(A) Weightlessness
(B) Gravitational force

(C) Acceleration due to gravity
(D) Both 'a' and 'b’

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What is an example of a synthesis reaction...?

(A) Water decomposing into Hydrogen and Oxygen
(B) Carbon combining with Oxygen to form Carbon Monoxide

(C) Nitrogen and Oxygen combining to form Nitrogen Dioxide
(D) Hydrogen and Oxygen combining to form water

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Human population growth is greatest in developing countries because ...?

(A) the birth rate is high in developing countries
(B) the death rate is high in developing countries.

(C) much of the population has already reached the child bearing age.
(D) most of the world’s population lives in industrialized countries.

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Enzyme activity decreased by ______...?

(A) Activator
(B) Substrate

(C) Inhibitor
(D) Coenzyme

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Dolly is the name of the ...?

(A) First cloned sheep
(B) First cloned monkey

(C) First test-tube baby
(D) First human fossil

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_________ extends from the top of the troposphere to the bottom of the mesosphere....?

(A) Thermosphere
(B) Ionosphere

(C) Stratosphere
(D) None of the above

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The green pigment present in leaves is called...?

(A) Chloroplast
(B) Chromoplast

(C) Chlorophyll
(D) None

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