Chemistry - Mock Test 15

Question 141

Which One Of The Following Metals Pollutes The Air Of A City Having Large Number Of Automobiles?

A) Cadmium B) Chromium C) Lead D) Copper

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Question 142

The Addition Of Gypsum To Portland Cement Helps In ?

A) Preventing Rapid Setting Of Cement B) Rapid Setting Of Cement C) Reduction In The Cost Of Cement D) Increasing The Strength Of Cement

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Question 143

What Is ''Milk Of Magnesia” Chemically ?

A) Magnesium Carbonate B) Sodium Bicarbonate C) Calcium Hydroxide D) Magnesium Hydroxide

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Question 144

What Is ''Milk Of Magnesia” Chemically ? ?

A) Magnesium Carbonate B) Sodium Bicarbonate C) Calcium Hydroxide D) Magnesium Hydroxide

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Question 145

The Chemical Bahaviour Of An Atom Depends Upon ?

A) The Number Of NeutronsIn The Nucleus B) The Number Of NucleonsIn The Nucleus C) The Number Of Electrons Orbiting Around The Nucleus D) The Number Of Protons In Its Nucleus

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Question 146

Cement Containing Excess Amount Of Lime ?

A) Cracks During Setting B) Becomes More Strong C) Is Slow Setting D) Is Quick Setting

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Question 147

Mortar Is A Mixture Of Water Sand And ?

A) Quick Lime B) Slaked Lime C) Limestone D) Gypsum

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Question 148

Tear Gas Is?

A) Chloroprene B) Carbonyl Chloride C) Nitrous Oxide D) Bleaching Powder

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Question 149

Black Lung Disease Occurs In People Working In ?

A) Electroplating Industry B) Organic Solvents Industry C) Paint Manufacturing Industry D) Coalmines

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Question 150

Chemical Name Of Bleaching Powder Is ?

A) Calcium Chloro Hypochlorite. B) Calcium Chlorate C) Calcium Hypochlorite D) Calcium Bi Chloride

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