The importance of perspiration is to ___________...? Mcqs

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The importance of perspiration is to ___________...?

(A) Eliminate body odours
(B) Improve the general health

(C) Open the pores in the skin
(D) Regulate body temperature

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What is the main component of bones and teeth...?

(A) Calcium carbonate
(B) Calcium phosphate

(C) Calcium sulphate
(D) Calcium nitrate

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Which of the following is the second kind of lever...?

(A) A nail cutter
(B) A fishing rod

(C) Pliers
(D) Claw hammer

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Which instrument among the following is used for observing multiple images of objects...?

(A) Periscope
(B) Kaleidoscope

(C) Telescope
(D) Microscope

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Big Bang was an explosion that occurred ...?

(A) 10 Billion years ago
(B) 15 Billion years ago

(C) 20 Billion years ago
(D) 25 Billion years ago

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Comets are often called what...?

(A) Dusty snowballs
(B) Filthy snowballs

(C) Dirty snowballs
(D) Impure snowballs

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Which one among the following is an example of decomposition reaction...?

(A) The formation of hydrogen and oxygen from water
(B) The formation of water from hydrogen and oxygen

(C) The formation of carbon dioxide from carbon and oxygen
(D) The formation of oxygen from nitrogen and oxygen

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According to Mosely the chemical properties of elements are the periodic function of their...?

(A) Atomic Size
(B) Atomic Mass

(C) Atomic Radius
(D) Atomic Number

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Which of the following is true of bile salts...?

(A) They are enzymes
(B) They are manufactured by the pancreas

(C) They emulsify fats in the duodenum
(D) They increase the efficiency of pepsin action

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Communication satellites are in which orbit...?

(A) Geosynchronous
(B) Semi synchronous

(C) Geostationary
(D) None of these

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