Chemistry - Mock Test 12

Question 111

The Major Harmful Gas Emitted By Automobile Vehicles Which Causes Air Pollution Is ?

A) Methane B) Carbon Monoxide C) Carbon Dioxide D) Ozone Gas

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Question 112

Which Of The Following Fibres Catches Fire Least ?

A) Rayon B) Cotton C) Terricot D) Nylon

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Question 113

Of The Following Which One Pollutes The Air Of Abig City ? ?

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

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Question 114

Which Of The Following Is Used To Remove Ink And Rust Stains On Cloth? ?

A) Oxalic Acid B) Alcohol C) Ether D) Kerosene Oil

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Question 115

Refrigerators Keep Food Unspoiled Because ?

A) At Its Low Temperature Bacteria And Moulds Are Inactive B) At Its Low Temperature The Germs Are Killed C) At Its Low Temperature The Germs Are Frozen D) It Sterilises The Food

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Question 116

Solder Metal Is An Alloy Of ?

A) Lead And Antimony B) Copper And Zinc C) Lead And Tin D) Copper And Tin

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Question 117

The Major Constituent Of Air Is ?

A) Nitrogen B) Carbon Dioxide C) Oxygen D) Hydrogen

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Question 118

Which Of The Following Is An Iron Ore ?

A) Bauxite B) Lignite C) Nitrite D) Magnetite

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Question 119

Glass Is A ?

A) Super Cooled Liquid B) Super Cooled Gas C) Superheated Liquid D) Superheated Solid

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Question 120

The Mass Number Of A Nucleus Is. ?

A) Always More Than Its Atomic Number B) Sometimes More And Sometimes Equal To Its Atomic Number C) Always Equal To Its Atomic Number D) Always Less Than Its Atomic Number

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