Gr.VIA-VIIB

Oxygen contributes about 1/5 by weight of water.

• TRUE

• FALSE

Oxygen is exclusively metallic and radioactive.

• TRUE

• FALSE

Ozone is a powerful reducing agent.

• TRUE

• FALSE

Ozone is used as antiseptic.

• TRUE

• FALSE

Selenium is used as solvent for gold in the form of Selenic Acid (H2SeO4).

• TRUE

• FALSE

Selenium in a form SeS2 shampoo is used for dandruff and catalyst in NH3 determination.

• TRUE

• FALSE

Fluorine is known as dephlogisticated muriatic acid.

• TRUE

• FALSE

Chlorine is the best oxidizing agent among the halogens.

• TRUE

• FALSE

Bromine is a powerful caustic and germicide and can be used as a medicinal agent.

• TRUE

• FALSE

Bromine has a strong foul odor that is dark reddish fuming liquid with suffocating odor.

• TRUE

• FALSE