In mercury thermometer, mercury of bulb expands and rises in the tube which has linear scale...? Mcqs

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In mercury thermometer, mercury of bulb expands and rises in the tube which has linear scale...?

(A) -20°F - 100°F
(B) 35°F - 105°F

(C) 100°F - 120°F
(D) 94°F - 108°F

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Which of the following can be used to reduce friction between moving parts of machines...?

(A) Sand
(B) Grease

(C) Gears
(D) Screws

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An atom has atomic number 16 and mass number 32, the number of protons is...?

(A) 32
(B) 14

(C) 16
(D) 18

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Who invented the first battery...?

(A) Alessandro volta
(B) Tim Berner

(C) Rob Stothard
(D) Georges Leclanche

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Acid deposition causes ______________________...?

(A) the greenhouse effect to lessen
(B) lakes and forests to die

(C) acid indigestion in humans
(D) all the above are correct

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As the temperature of ice rises, the ice melts and its density...?

(A) Decreases
(B) Remain constant

(C) Increases
(D) Increases upto 10C

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How many teeth does a dog have...?

(A) 42
(B) 45

(C) 46
(D) 47

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What is the rank of the earth in the solar system in terms of size...?

(A) 5th
(B) 4th

(C) 3rd
(D) None of these

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Which of the following planets have the longest day...?

(A) Jupiter
(B) Mercury

(C) Earth
(D) Venus

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The ozone layer is at height of________kilometers from the surface of the Earth...?

(A) 10 to 20
(B) 20 to 30

(C) 30 to 40
(D) 40 to 50

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