Chemistry - Comprehensive Mock Test 3

Question 21 Medium

Nowadays Yellow Lamps Are Frequently Used As Street Lights. Which Of The Following Gases Is Used In These Lamps ?

A) Hydrogen B) Neon C) Sodium D) Nitrogen

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Question 22 Easy

Cement Is Usually A Mixture Of ?

A) Calcium Aluminate And Calcium Ferrate B) Calcium Silicate And Calcium Aluminate C) Calcium Silicate And Calcium Ferrate D) Lime Stone And Silicon Dioxide

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Question 23 Medium

What Is The Most Commonly Used Substance In Fluorescent Tubes?

A) Mercury Oxide And Neonv B) Mercury Vapour And Argon C) Sodium Vapour And Neon D) Sodium Oxide And Argon

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Question 24 Easy

Which Of The Following Is Riot A Greenhouse Gas ?

A) Carbon Dioxide B) Nitric Oxide C) Chlorofluorocarbon D) Hydrogen

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Question 25 Easy

Rusting Of Iron Takes Place Due To ?

A) Oxidation B) Carbonation C) Exfoliation D) Corrosion

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Question 26 Medium

Milk Tastes Sour When Kept In The Open For Sometime Due To The Formation Of?

A) Lactic Acid B) Citric Acid C) Acetic Acid D) Carbonic Acid

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Question 27 Easy

Which Of The Following Is A Super Cooled Liquid ?

A) Ice Cream B) Teflon C) Glass D) Mercury

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Question 28 Medium

The Chemical Used In Embalming Biological Materials Is ?

A) Formaldehyde In Methanol B) Formaldehyde In Water C) Ethyleneglycol D) Gaseous Formaldehyde

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Question 29 Medium

The Acid Rain Destroys Vegetations Because It Contains ?

A) Nitric Acid B) Ozone C) Carbon Monoxide D) Sulphuric Acid

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Question 30 Easy

The Ratio Of Pure Gold In 18 Carat Gold Is ?

A) 60% B) 75% C) 80% D) 90%

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