Why is the Ozone important for mankind...? Mcqs

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Why is the Ozone important for mankind...?

(i) Protection from ultraviolet rays of sun
(ii) It releases oxygen in the air

(iii) It maintains temperature of the earth
(iv) It releases hydrogen in the atmosphere

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When one acted as moderator in nuclear reactor...?

(i) Regular Water
(ii) Graphite

(iii) Heavy Water
(iv) All Of Above

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The largest planet is

(i) Venus
(ii) Jupiter

(iii) Mercury
(iv) Mars

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The lowest zone of atmosphere containing about seventy five percent of total mass of atmosphere and ninety percent of its water vapour is called...?

(i) Troposphere
(ii) Lonosphere

(iii) Aerosphere
(iv) Stratosphere

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Dr Abdus Salam was awarded Nobel Prize having work on which basic forces...?

(i) Electromagnetic and Molecular
(ii) Electromagnetic and Electromotive

(iii) Weak and Electro Magnetic
(iv) None of these

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The SI unit of energy is...?

(i) Kelvin
(ii) Joule

(iii) Temperature
(iv) Mole

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Which chemical element has properties of a metal and no metals...?

(i) Metalloid
(ii) Lanthanoid

(iii) Actanoid
(iv) Graphite

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Study of maps and features of the Universe is called...?

(i) Mataphysics
(ii) Cosmography

(iii) Cosmology
(iv) Cartography

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Meteorology is...?

(i) Science of atmosphere
(ii) Study of weights & measures

(iii) Study of growth
(iv) Study of stars

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Far Sightedness can be corrected by:...?

(i) Convex lens
(ii) Concave lens

(iii) Bi Focal lens
(iv) None of these

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