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 among the following is not present in the animal cell...?

(A) Chloroplast
(B) Nucleus

(C) Cell wall
(D) Both A and C

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Which layer of the atmosphere lies close to the earth...?

(A) Stratosphere
(B) Mesosphere

(C) Troposphere
(D) Thermosphere

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The vitamin which is generally excreted by humans in urine is__________...?

(A) Vitamin A
(B) Vitamin B

(C) Vitamin B12
(D) Vitamin C

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Air contains maximum amount of__________...?

(A) oxygen
(B) nitrogen

(C) hydrogen
(D) carbon dioxide

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Pumping of blood by the rhythmic pulsation of heart throughout the body is called...?

(A) Blood pressure
(B) Circulation

(C) Pulse
(D) Heart beat

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Gravitational field of Earth is directed _____...?

(A) Towards the Earth
(B) Towards the Sun

(C) Towards the Moon
(D) Away from Earth

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A/an _______ provides an incomplete path for the current to flow through....?

(A) Open Circuit
(B) Closed Circuit

(C) Series Circuit
(D) Short Circuit

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The source of the Sun’s energy is the process of ____________...?

(A) Photoelectric emission
(B) Nuclear fission

(C) Nuclear fusion
(D) Thermionic emission

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The 3N zygote is angiosperm develop into ______...?

(A) Seed coat
(B) Cotyledon

(C) Embryo
(D) Endosperm

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