One of the main function of the earth’s ozone layer is to ...? Mcqs

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One of the main function of the earth’s ozone layer is to ...?

(A) Prevent global warming
(B) Filter out ultraviolet rays

(C) Absorb pollution
(D) All of the above

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Year is longest on : _____________...?

(A) Mercury
(B) Venus

(C) Mars
(D) The Earth

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Speed of sound in air per second is :...?

(A) 250 meters
(B) 331 meters

(C) 434 meters
(D) 343.2 meters

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The movement of materials/sugar from the leaves to other tissues of the plant is called...?

(A) Translocation
(B) Photosynthesis

(C) Respiration
(D) Transpiration

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The ozone layer is at height of________kilometers from the surface of the Earth...?

(A) 10 to 20
(B) 20 to 30

(C) 30 to 40
(D) 40 to 50

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Water is a good solvent of ionic salts because:...?

(A) It has a high specific heat
(B) It has no colour

(C) It has a high dipole moment
(D) None of these

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For which one of the following is the density maximum...?

(A) Ice
(B) Water

(C) Benzene
(D) Chloroform

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Refrigerator works on the phenomenon of ________ of heat transfer....?

(A) Conduction
(B) Convection

(C) Radiation
(D) All of these

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Which planet is called “red planet”...?

(A) Mars
(B) Venus

(C) Jupiter
(D) Saturn

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ICT stands for what...?

(A) Information and communication techniques
(B) Internet and communcation television

(C) Internet communication tool
(D) Information and communication technology

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