The chemical name of Laughing gas is___________...? Mcqs

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The chemical name of Laughing gas is___________...?

(A) Nitric oxide
(B) Nitrogen dioxide

(C) Nitrogen pentoxide
(D) Nitrous oxide

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The mean distance of the earth from the sun is astronomical units is____________...?

(A) 3.7 AU
(B) 10 AU

(C) 1 AU
(D) 101 AU

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The ratio of output to input is called...?

(A) Energy
(B) Work

(C) Power
(D) Efficiency

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Which isotope is used to investigate carbon uptake and biochemical pathways in plants...?

(A) Phosphorus - 32
(B) Carbon - 14

(C) Lead - 210
(D) Nitrogen - 15

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The echo (reflected sounD. will be distinctly heard only at ordinary temperatures if the distance of the reflecting surfaces from the source of sound is at least ________...?

(A) 1120 ft
(B) 120 ft

(C) 56 ft
(D) 100 ft

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The cold war between the organisms of a community occupying the same habitat is called _____...?

(A) Predation
(B) Competition

(C) Mutualism
(D) Commensalism

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Jupiter has ________ known moons....?

(A) 62
(B) 73

(C) 79
(D) 53

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The Boolean expression of an AND gate is ______...?

(A) A . B
(B) A + B

(C) A x B
(D) None of these

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A nuclear reactor is a device used to carry out controlled nuclear reaction whereas GM counter is a device used to detect...?

(A) Current
(B) Voltage

(C) Nuclear Radiation
(D) power

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At what angle above the horizon must the sun be to create a rainbow...?

(A) 90 degrees
(B) 60 degrees

(C) 40 degrees
(D) 65 degrees

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