Foundation Level-II JEE Mock Test-9 (Chemistry)

What percentage of water is in our body?

• 30%

• 70%

• 20%

• None of these

The boiling point of water on plains is 100°C. At hills it will be_________

• 100°C

• More than 100° C

• Less than 100° C

• None of these

The purest form of natural water is _________

• Rain water

• Ground water

• Surface water

• None of these

Solubility of gases in water.

• Increase with increase in temperature

• Decreases with decrease in temperature

• Decrease with increase in temperature

• None of these

Water at room temperature is-

• Solid

• Liquid

• Gas

• None of these

Water has maximum density at-

• 0°c

• 10°c

• 4°c

• None of these

How much of the earth surface is covered with water?

• About 1/3rd

• About 1/4th

• About 3/4th

• None of these

The ratio of the number of hydrogen atoms and those of oxygen in water is-

• 2:1

• 1:

• 2:2

• None of these

How much water is available for our consumption?

• 0.01%

• 1%

• 10%

• None of these

Which of these has the lowest density?

• Ice

• Water at 10°c

• Water at 4°c

• None of these