Chemistry - Comprehensive Mock Test 27

Question 261 Easy

Glass is made from the mixture of?

A) Quartz and mica B) Sand and salt C) Sand and silicates D) None of these

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Question 262 Easy

The major ingredient of leather is?

A) Carbohydrate B) Collagen C) Polymer D) Nucleic acid

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Question 263 Easy

The recent atomic weight scale is based on?

A) 1H1 B) 1H2 C) 6C12 D) 8O16

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Question 264 Medium

According to Dalton’s atomic theory the smallest particle which can exist independently is?

A) An atom B) A molecule C) A cation D) An anion

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Question 265 Medium

Which of the following elements is non-radioactive?

A) Uranium B) Thorium C) Plutonium D) Zirconium

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Question 266 Easy

The most important ore of Aluminium is?

A) Bauxite B) Calamine C) Calcite D) Galena

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Question 267 Easy

Which of the following is the lightest metal ?

A) Mercury B) Silver C) Lithium D) Lead

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Question 268 Medium

Which of the following gases is used for refrigeration?

A) Freon B) Chlorine C) Carbon dioxide D) Hydrogen

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Question 269 Easy

The acid use in lead storage cells is?

A) phosphoric acid B) hydrochloric acid C) nitric acid D) sulphuric acid

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Question 270 Medium

Aluminium is obtained by the electrolysis of pure Al2O3 dissolved in?

A) Bauxite B) Cryolite C) Feldspar D) Alumina

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