Analytical chemistry

Which gas is a colorless alkaline gas with a strong sharp smell ?

• Nitrogen

• Ammonia

• Hydrogen

• Carbon dioxide

Chromium(III) gives which precipitate by effect of aqueous sodium hydroxide ?

Which gas is poisonous and turns indicator paper white ?

Which is the test for Carbon dioxide ?

• Limewater test

• Indicator paper test

• Lighted splinter test

• Litmus paper

What is the color of Potassium salt in the flame test ?

• Blue-green

• Red

• Yellow

• Lilac

Which precipitate does Bromine give after acidifying with dil. nitric acid and then adding aqueous silver nitrate ?

• White precipitate

• Yellow precipitate

• Cream precipitate

By which displacement of water is Hydrogen collected ?

Which gas is collected by upward displacement of air ?

• Sulphur dioxide

• Ammonia

• Oxygen

• Hydrogen

What is the property of Sulphur dioxide ?

• a colorless gas which combines violently when lit

• a green poisonous gas which bleaches dyes

• a colorless alkaline gas with a strong sharp odour

• a colorless gas which has a strong choking odour

What types of analysis can identify cations and anions in a given sample ?

• Qualitative analysis

• Quantitative analysis