An astronaut inside a spacecraft is in a state of weightlessness. This implies that...? Mcqs

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An astronaut inside a spacecraft is in a state of weightlessness. This implies that...?

(A) The mass of the astronaut is reduced to zero
(B) Gravity inside the spacecraft ceases to act

(C) The astronaut is outside the influence of the earth’s gravitational force
(D) The astronaut and the spacecraft are both in a free-failing state

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speed of sound in dry air at 20 °C is___________...?

(A) 353 m/s
(B) 345 m/s

(C) 343 m/s
(D) none of them

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A mixture of sand and naphthalene can be separated by ________ ...?

(A) Chromatography
(B) Fractional distillation

(C) Sublimation
(D) None of these

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Scurvy is caused due to the deficiency of ___________...?

(A) Vitamin A
(B) Vitamin D

(C) Vitamin C
(D) None of these

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Which organ is considered as chemical factory of human body ...?

(A) Stomach
(B) Intestine

(C) Liver
(D) Kidneys

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The Planet of the solar system which has Maximum number of moons is___________...?

(A) Jupiter
(B) Venus

(C) Saturn
(D) Uranus

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Which is not a biodegradable waste...?

(A) Vegetable peeling
(B) Plastic bottles

(C) Paper
(D) None

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Milk tastes sour when kept in the open for sometime due to the formation of __________...?

(A) lactic acid
(B) citric acid

(C) acetic acid
(D) carbonic acid

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Glass is made of the mixture of______________...?

(A) Quartz and Mica
(B) Sand and Salt

(C) Sand and Silicates
(D) None of these

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There are ______types of respiration takes place in frog....?

(A) 1
(B) 2

(C) 3
(D) None of these

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