The top atmosphere of the Earth directly reflects back into space nearly what part of the total amount of sun’s energy coming to it...? Mcqs

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The top atmosphere of the Earth directly reflects back into space nearly what part of the total amount of sun’s energy coming to it...?

(A) 10%
(B) 20%

(C) 30%
(D) 50%

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How many bones are in human Eyes...?

(A) Three
(B) Four

(C) Five
(D) Seven

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According to the positions of effort, fulcrum, and load, levers are divided into...?

(A) Two kinds
(B) Three kinds

(C) Four kinds
(D) Five kinds

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If steel is heated to a temperature well below red heat and is then cooled slowly, the process is called_________...?

(A) Annealing
(B) Quenching

(C) Tempering
(D) Nitriding

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Long-sight defect could be corrected by using __________ lens...?

(A) concave
(B) Convex

(C) diverging
(D) none of these

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In which stage of mitosis contraction of spindle fiber takes place resulting chromosomes to move towards the opposite poles of the cells...?

(A) Metaphase
(B) Anaphase

(C) Telophase
(D) Prophase

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Which mineral is the present in whole wheat, bananas, peas, prunes, oysters, liver, kidney, grains and legumes...?

(A) Copper
(B) Magnesium

(C) Sodium
(D) Iron

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Which of the following is not a fat soluble vitamin...?

(A) Vitamin A
(B) Vitamin D

(C) Vitamin B complex
(D) Vitamin K

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Electrostatic precipitator is used to control...?

(A) Air pollution
(B) Water pollution

(C) Solid waste
(D) Noise pollution

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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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