How long does the Earth take to complete one rotation...? Mcqs

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How long does the Earth take to complete one rotation...?

(A) 23 hours 59 minutes 59 seconds
(B) 24 hours 00 minutes 00 seconds

(C) 23 hours 56 minutes 04 seconds
(D) 24 hours 01 minutes 01 seconds

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Which of the following allows all light to pass through it...?

(A) Book
(B) Air

(C) Wood
(D) Newspaper

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Roots, stem and leaves produce their offspring through _____...?

(A) Sexual Reproduction
(B) Fragmentation

(C) Binary Fission
(D) Asexual Reproduction

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The audible range of normal elephant ear is ______...?

(A) 16 Hz to 20kHz
(B) 10 Hz to 31kHz

(C) 67 Hz to 45kHz
(D) 20 Hz to 20kHz

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What is the element required for solar energy conversion ______...?

(A) Ultra pure carbon
(B) Silicon

(C) Beryllium
(D) Tantalum

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Titan, a moon of __________ , and Triton, a moon of _________ , have atmospheres mainly of _________....?

(A) Saturn, Jupiter, Hydrogen
(B) Uranus, Neptune, Nitrogen

(C) Saturn, Neptune, Nitrogen
(D) Mars, Venus, Hydrogen

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Who discovered the Solar system ...?

(A) Copernicus
(B) Newton

(C) Galileo
(D) Kepler

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_______ are used to put satellites into orbits....?

(A) Helicopter
(B) Aeroplane

(C) Rocket
(D) None of these

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At room temperature most of ionic compounds are ______...?

(A) Amorphous solids
(B) Crystalline solids

(C) Liquids
(D) Gases

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__________ gas is released when coal is burnes in ln lack of Oxygen...?

(A) Carbon Dioxide
(B) Methane

(C) Ethene
(D) Carbon Monoxide

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