The Velocity of light in a diamond is (whereas the refractive index of a diamond with respect to vacuum is 2.5)...? Mcqs

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The Velocity of light in a diamond is (whereas the refractive index of a diamond with respect to vacuum is 2.5)...?

(A) 5x10^8m/s
(B) 2.5x10^8m/s

(C) 1.2x10^10m/s
(D) 1.2x10^8m/s

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Erythrocyte is another name for a ___________...?

(A) white blood Cells
(B) Platelet

(C) Red Blood cells
(D) Plasma

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Most gases conduct electricity at:...?

(A) Normal pressure
(B) Very low pressure

(C) Very high pressure
(D) None of these

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Colour of the plants is green due to the presence of _________....?

(A) Carbon dioxide
(B) Chlorophyll

(C) Urea
(D) Oxygen

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what kind of soil is treated with gypsum to make it suitable for cropping______...?

(A) Alkaline
(B) Acidic

(C) Waterlogged
(D) Soil with excessive clay content

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Composition of Ozone layer...?

(A) O1
(B) O2

(C) O3
(D) O4

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Permanent hardness of water may be removed by the addition of___________...?

(A) Sodium Carbonate
(B) Alum

(C) Potassium Permanganate
(D) Lime

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Which of the following waves have smallest velocity in vacuum...?

(A) Ultraviolet
(B) Sound

(C) Infra-Red
(D) Micro

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Heat is a form of energy associated with ____...?

(A) Atomic Stability
(B) Molecular Motion

(C) Nuclear Reaction
(D) Electromagnetic Radiation

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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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