Friday, February 28, 2020

WBCS Polity and Constitution MCQs Prelims and Mains

Chemistry questions quizlet For UPSC | SSC | Rail | RRB | State PSC P13


Chemistry - 13

61. X-ray fails to pass through
(A) Iron
(B) Gold
(C) Flesh
(D) Bone

Correct Answer: [D] Bone.
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62. The Greenhouse effect gases trap only the heat of following radiations
(A) Solar
(B) Ultraviolet
(C) Both A and B
(D) Infrared

Correct Answer: [D] Infrared.
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63. Fullerene is
(A) Artificial emery
(B) A compound of carbon
(C) An allotrope of carbon
(D) A synonym for carborundum

Correct Answer: [C] An allotrope of carbon.
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64. Blood hemoglobin contains the metal
(A) Copper
(B) Iron
(C) Aluminum
(D) Magnesium

Correct Answer: [B] Iron.
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65. In 1775 a scientist experimentally showed that air consists of two gases. The name of the scientist is
(A) Darwin
(B) Davy
(C) Priestley
(D) Lavoisier

Correct Answer: [C] Priestley.
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