Cobalt is a material which is ...? Mcqs

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Cobalt is a material which is ...?

(A) Strongly attracted by a magnet
(B) Not attracted by a magnet

(C) not a magnet
(D) Weakly attracted by a magnet

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Nearest star to sun is: __________...?

(A) Proxima Centurai
(B) Alpha Scorpii

(C) Beta Orionis
(D) Vega

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The depletion of ozone layer has been caused mainly by _____...?

(A) The release of industrial waste
(B) The deforestation of large area land

(C) The release of chlorofluorocarbons into the atmosphere
(D) None of these

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High solubility of fertilizers also degrades ecosystem through _____...?

(A) Acidification
(B) Erosion

(C) Salinity
(D) Eutrophication

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The carboxylate end of the soap molecule that is attracted to water is called...?

(A) Hydrophobic end
(B) End point

(C) Hydrophilic end
(D) None

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The phenomenon of dispersion light can be observed experimentally by passing a white light through ____...?

(A) Lens
(B) Prism

(C) Mirror
(D) Grating

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The increasing vapor pressure caused by heating a liquid is due to___________...?

(A) increase inter-molecular interactions
(B) increasing potential energy of molecules

(C) increasing kinetic energy of molecules
(D) decreasing surface tension

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The nearest planet to the Earth is _________...?

(A) Venus
(B) Mercury

(C) Mars
(D) Moon

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Sodium Carbonate is commonly called ________...?

(A) Plaster of Paris
(B) Washing Soda

(C) Common Salt
(D) None of these

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What is the degree of rotation of the earth each hour...?

(A) 1°
(B) 5°

(C) 7.5°
(D) 15°

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