A movable pulley can _______...? Mcqs

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A movable pulley can _______...?

(A) Increase the input force
(B) Decrease the input force

(C) Change the direction of force
(D) Change the speed of force

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When a warm air is lifted off the surface in temperature depression it is called ________...?

(A) An occlusion
(B) A cold front

(C) An anticyclone
(D) A warm front

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Yeasts feeds on sugar in the dough and produces ______ gas....?

(A) Oxygen
(B) Hydrogen

(C) Carbon dioxide
(D) Nitrogen

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Following are examples of convex mirrors except ____...?

(A) Rear-view mirror
(B) Dentist mirror

(C) Blind Corner mirror
(D) Security mirror

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The sky drivers use parachutes to easily descend towards the earth because of it:...?

(A) Increases air resistance
(B) Decreases air resistance

(C) Decreases air friction
(D) Speeds up

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Law of conservation of mass was given by ____...?

(A) Antoine Lavoisier
(B) Joseph Black

(C) Mikhail Lomonosov
(D) Jean Stas

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Scientific study of the Algae is known as ___________...?

(A) Phycology
(B) Pomology

(C) Oneriology
(D) Trichology

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The most densest substance on the Earth is __________....?

(A) Platinum
(B) Copper

(C) Steel
(D) Osmium

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Deficiency of Vitamin-D results in __________...?

(A) night blindness
(B) rickets

(C) scurvy
(D) hair fall

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Which bird eats pebbles for helping digestion by grinding up the ingested food...?

(A) Pigeon
(B) Hen

(C) Ostrich
(D) Owl

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