INTRODUCTION TO CHEMISTRY

A homogeneous mixture of two or more than two metals or non-metals.

• Alloy

• Metals

• Non-metals

• None of the above

Gas law is given by

• Robert Boyle

• John Dalton

• Dimitri Mendeleev

• Max Planck

Radioactivity is discovered by

• Pierre and Marie Curie

• Henri Becquerel

• John Dalton

• Both 1 and 2

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The rusting of iron, the green coating on copper or blackening of silver items are all examples of

• Cellular respiration

• Oxidation reaction

Alloy made of copper and tin is

• Brass

• Bronze

• Steel

• Silver

It is a mixture of a large number of hydrocarbons.

• Fossil fuel

• Minerals

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Gems are __________ with an ornamental value.

• elements

• minerals

• ores

• alloys

_____________ is composed of mainly coarse gravel or crushed stones such as limestone or granite, sand , cement and water

• Concrete

• Mineral

• Alloy

• Element

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___________________ plays an important role in trying to increase the availability of the food.

• Petrochemistry

• Pharmacology

• Agricultural chemistry

• All of the above

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Medicines can be administered in the form of

• tablets

• capsules

• injections

• all of the above.