Chemistry General Studies Questions for ssc upsc competitive examspage 8

106 .The use of heat treatment of ore that includes smelting and roasting is termed:

A. electrometallurgy

B. Cryometallurgy

C. Hydrometallurgy

D. Pyrometallurgy

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107 .Annealing process is -

A. heating the steel bright red and then cooling slowly

B. heating the steel to a temperature much below redness and cooling it slowly

C. beating rods of iron embedded in charcoal powder

D. heating steel to bright red and cooling suddenly

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108 .What happens when a drop of glycerol is added to crush KMnO4 sprcad on a paper?

A. There is a crackling sound

B. There is no reaction

C. The paper ignites

D. There is a violent explosion

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109 .Isobars are lines displaying areas of equal-

A. Humidity

B. Temperature

C. Rainfall

D. Atmospheri

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110 .Neutron was discovered by

A. J. J. Thomson

B. Chadwick

C. Rutherford

D. Priestley

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111 .Enzymes-

A. accelerate bio-chemical reactions

B. consist of amino acids

C. have optimum activity at body temperature

D. have all these properties

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112 .The chemical name of bakin soda is

A. Sodium carbonate

B. Sodium bicarbonate

C. Sodium Chloride

D. Sodium nitrate

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113 .Sodium metal should be stored in

A. Alcohol

B. Kerosene oil

C. Water

D. Hydrochloric acid

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114 .Ethanol containing 5% water is known as-

A. Absolute alcohol

B. Dilute alcohol

C. Power alcohol

D. Rectified spirit

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115 .Gamam rays are-

A. high energy electrons

B. low energy electrons

C. high energy electromagnetic

D. high energy positions waves

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116 .Plaster of Paris is made from -

A. Marble

B. Bauxite

C. Limestone

D. Gypsum

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117 .Photographic plates are coated with a film of-

A. AgCI

B. AgBr

C. AgI

D. AgNO3

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118 .The gas supplied in cylinders for cooking is-

A. marsh gas

B. LPG

C. Mixture of CH4 and C2H6

D. Mixture of ethane and propane

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119 .The most abundant elements is:

A. Silicon

B. Calcium

C. Nitrogen

D. Oxygen

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120 .The term 'Carbon foot print' means

A. A region which is rich in coal mines

B. The amount of reduction in the emission of CO2 by a country

C. The use of Carbon in manufacturing industries

D. The amount of greenhouse gases produced by our day-to-day activities

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