Question : Gunpowder consist a mixture of

Option 1: Sand and TNT

Option 2: TNT and charcol

Option 3: Nitrate, sulphur and charcoal

Option 4: Sulphur, sand and charcoal

Question : Which of the following acts as the best adsorbent?

Option 1: Charcoal

Option 2: Activated charcoal

Option 3: Activated coconut charcoal

Option 4: Carbon black

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

Option 1: 5 : 1

Option 2: 5 : 2

Option 3: 5 : 3

Option 4: 5 : 4

Question : A can of water and milk mixture contains 60% milk. A part of this mixture is replaced by another mixture containing 50% milk and the percentage of milk was found to be 52%. The quantity of mixture replaced is:

Option 1: $\frac{1}{5}$

Option 2: $\frac{3}{5}$

Option 3: $\frac{4}{5}$

Option 4: $\frac{2}{5}$

Question : What is the chemical name of saltpetre?

Option 1: Potassium nitrate

Option 2: Potassium manganite

Option 3: Lead nitrate

Option 4: Lead sulphate

Question : 20 litres of a mixture contains 20% alcohol and the rest is water. If 4 litres of water is mixed in it, the percentage of alcohol in the new mixture will be:

Option 1: $33\frac{1}{3}\%$

Option 2: $16\frac{2}{3}\%$

Option 3: $25\%$

Option 4: $12\frac{1}{2}\%$