Free hydrogen is a colourless gas.

• True

• False

Hydrogen was used for filling baloons.

• True

• False

Hydrogen is an essential component of all acids.

• True

• False

Hydrogen is not widely distibuted

• True

• False

When ignited, hydrogen burns with a blue flame.

• True

• False

Hydrogen can't be condensed to liquid.

• True

• False

Hydrogen is a component of water.

• True

• False

Hydrogen is prepared in the lab in the reaction of ............

• zinc

• sulphur

Hydrogen is a constituent of..............

• sugar and starch

• fat and protein

• both

Hydrogen is active at ordinary temperatures.

• True

• False