The orange coloured compound formed when H₂O₂ is added to TiO₂ solution acidified with conc. H₂SO₄ is

• Ti₂O₃

• H₂Ti₂O₈

• H₂TiO₃

• H₂TiO₄

How many mL of perhydrol is required to produce sufficient oxygen which can be used to completely convert 2 L of SO₂ gas to SO₃ gas?

• 10 mL

• 5 mL

• 20 mL

• 30 mL

Which property among the following is same for both hydrogen and deuterium molecules?

• Bond energy

• Melting point

• Boiling point

• Bond length

In which of the following reactions hydrogen is not liberated?

• Reaction of fused NaOH with C

• Reaction of NaOH with sulphur

• Heating the concentrated NaOH with Si

• Reaction of zinc with NaOH

Observe the following statements-

i. Heavy water is harmful for the growth of animals.

ii. Haevy water reacts with Al₄C₃ and forms deyterated acetylene. 

iii. BaCl₂.2D₂O is an example of interstitial deuterate.

The correct statements are-

• 1 and 3

• 1 and 2

• 1, 2 and 3

• 2 and 3

Which of the following methods is used for the removal of temporary hardness of water?

• Treatment with washing soda

• Calgon method

• lon-exchange method

• Clark's method

Temporary hardness of water is removed in Clark's process by adding

• caustic soda

• calgon

• borax

• lime

Calgon is

• Na₂HPO₄

• Na₃PO₄

• Na₆P₆O₁₈

• NaH₂PO₄

On which of the following principles hydrogen bomb is based?

• Nuclear fission

• Nuclear fusion

• Artificial radioactivity

• Natural radioactivity

40.

Radioactive hydrogen is

• tritium

• deuterium

• ortho hydrogen

• para hydrogen