Question : From the given options, choose the one which is not a product of the decomposition reaction of Lead nitrate.

Option 1: Nitrogen dioxide

Option 2: Oxygen

Option 3: Nitrogen

Option 4: Lead oxide

Question : In a mixture of 25 litres, the ratio of acid to water is 4 : 1. Another 3 litres of water is added. The ratio of acid to water in the new mixture is:

Option 1: 5 : 2

Option 2: 2 : 5

Option 3: 3 : 5

Option 4: 5 : 3

Question : Which among the following is added to commercial nitric acid to make it coloured?

Option 1: Carbon dioxide

Option 2: Sulphur dioxide

Option 3: Coloured impurities

Option 4: Nitrogen dioxide

Question : Which of the following is the main compound of voter ink?

Option 1: Silver nitrate

Option 2: Ammonium chloride

Option 3: Silver chloride

Option 4: Ammonium nitrate

Question : Which of the following statements is correct?

Option 1: Zinc oxide is a form of rust.

Option 2: Copper can also turn into rust upon hydration.

Option 3: Chemically, rust is hydrated ferric oxide.

Option 4: Chemically, rust is a non-hydrated ferric oxide.