The speed of the sound in air is ______...? Mcqs

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The speed of the sound in air is ______...?

(A) 143 m/s
(B) 243 m/s

(C) 343 m/s
(D) 443 m/s

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Movement of water molecules from the area of higher water potential to the area of lower water potential called...?

(A) Diffusion
(B) Osmosis

(C) Active transport
(D) Water potential

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The type of waves that are used in the television remote controllers...?

(A) Radio waves
(B) Infra-red waves

(C) Ultra-violet waves
(D) Visible light

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The change from liquid to solid, or the reverse of melting, is called...?

(A) Melting
(B) Freezing

(C) Evaporation
(D) Condensation

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For burning, which agent is necessary...?

(A) Oxygen
(B) Hydrogen

(C) Carbon
(D) Fire

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We could destroy the Dengue Mosquito by introducing a special Mosquito Eating ______in the water bodies....?

(A) Fish
(B) Meat

(C) Chicken
(D) None

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Which of the following was first to be discovered in the chromospheres of the sun...?

(A) Krypton
(B) Xenon

(C) Neon
(D) Helium

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Which of the following harmonics is two octaves higher in pitch than the fundamental...?

(A) Second
(B) Third

(C) Fourth
(D) Fifth

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A clouding that develops in the lens of the eye or in its envelope obstructing the passage of light is known as________...?

(A) Glaucoma
(B) Hemophilia

(C) Cataract
(D) Diphtheria

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Ozone layer exist above the earth about ______...?

(A) 35km
(B) 25km

(C) 40km
(D) 30km

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