Pressure in gases is due to _____...? Mcqs

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Pressure in gases is due to _____...?

(A) Collision of molecules with walls of containers
(B) Vibration of molecules

(C) Rotation of molecules
(D) Electromagnetic attraction between molecules

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A force of 15 N makes an angle of 60° with horizontal. Its vertical component will be ____...?

(A) 15 N
(B) 10 N

(C) 13 N
(D) 7 N

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A colour blind person cannot distinguish between _________...?

(A) White & Yellow
(B) Red & Green

(C) Red & Black
(D) Green & Black

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How many moons does Saturn have...?

(A) 7
(B) 13

(C) 79
(D) 82

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Which organs of plants help in reproduction...?

(A) Stems
(B) Flowers

(C) Roots
(D) Leaves

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Rainbow is seen after rain because of hanging molecules of water which act as __________...?

(A) Lens
(B) Prism

(C) Mirror
(D) Slabs

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A set of metabolism reaction which maintain internal environment is ______...?

(A) Positive feedback
(B) Negative feedback

(C) Osmoregulation
(D) Homeostasis

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Nuclei having the same nuclear charge but different masses are called ____...?

(A) Isobars
(B) Isotopes

(C) Isoelectronic
(D) Isomers

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All the bones of the body make a frame called...?

(A) Skelton
(B) Tissue

(C) Skull
(D) None of these

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Medulla oblongata is a part of human ___________...?

(A) Heart
(B) Brain

(C) Liver
(D) Sex organ

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