Which statement is incorrect about gas molecules...? Mcqs

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Which statement is incorrect about gas molecules...?

(A) Molecules are widely separated
(B) Molecules have low attractive forces

(C) Molecules free to move in any direction
(D) Molecules collide with one another

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A Global Positioning System (GPS) comprises how many satellites...?

(A) More than 10
(B) More than 20

(C) More than 30
(D) More than 40

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Which of the following gas mainly responsible for ozone layer depletion...?

(A) Chlorofluorocarbon
(B) CO2

(C) Nitrogen oxide
(D) Sulphur dioxide

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Which four planets are also called the terrestrial planets...?

(A) Inner planets (Mercury, Venus, Earth, and Mars)
(B) Outer planets (Jupiter, Saturn, Uranus, and Neptune)

(C) Inner planets (Mercury, Venus) and outer planets (Uranus, Neptune)
(D) Inner planets (Earth, Mars) and outer planets (Jupiter, Saturn)

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Vitamin C deficiency leads to:____________...?

(A) Scurvy
(B) Cold

(C) Cancer
(D) Rickets

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In constructive reaction _____ molecules are formed....?

(A) Small
(B) Medium

(C) Equal
(D) Large

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Which element has the second most % in human body...?

(A) Oxygen 65%
(B) Calcium 75%

(C) Hydrogen 10%
(D) Carbon 18%

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When an object reflects the entire component colours of light, it appears ____...?

(A) White
(B) Black

(C) Green
(D) Dark

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In an oil lamp, the oil rises up in the wick due to...?

(A) Capillary action
(B) Atmospheric pressure

(C) Viscosity of oil
(D) Change in temperature

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A telescope is an instrument that gathers _______ from distant sources....?

(A) Sound
(B) Light

(C) Heat
(D) Water

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