Chemistry - Comprehensive Mock Test 7

Question 61 Medium

A Metal Is Exposed To The Atmosphere For Sometime It Becomes Coated With Green Carbonate. The Metal Must Be ?

A) Silver B) Aluminium C) Copper D) Zinc

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Question 62 Easy

Which Is Abundant In Gobar Gas?

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

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Question 63 Easy

Gobar Gas Basically Contained ?

A) Carbon Dioxide B) Hydrogen Sulphide C) Methane D) Carbon Monoxide

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Question 64 Easy

Glycol Is Added To Aviation Gasoline Because It ?

A) Reduces Evaporation Of Petrol B) Increases Efficiency Of Petrol C) Reduces Consumption Of Petrol D) Prevents Freezing Of Petrol

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Question 65 Medium

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 66 Medium

Which Of The Following Fibres Catches Fire Least ?

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

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Question 67 Medium

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

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

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Question 68 Medium

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 69 Easy

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 70 Easy

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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Solution Breakdown:

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