Sulphur trioxide is dissolved in heavy water to form a compound X. The hybridisation state of sulphur in X is :

• sp²

• sp³

• sp

• dsp²

Which one of the following reactions does not form gaseous product?

• PbO₂ + H₂O₂ →

• Acidified KMnO₄ + H₂O₂ →

• PbS + H₂O₂ →

• Cl₂ + H₂O₂ →

Assertion (A) : NaCl is less soluble in heavy water than in ordinary water.

Reason (R) : Dielectric constant of ordinary water is more than that of heavy water.

The correct answer is:

• Both (A) and (R) are true and (R) is the correct explanation of (A)

• Both (A) and (R) are true but (R) is not the correct explanation of (A)

• (A) is true, but (R) is not true

• (A) is not true, but (R) is true

194.

Which one of the following reactions represents the oxidising property of H₂O₂?

• 2KMnO₄ + 3H₂SO₄ + 5H₂O₂ → K₂SO₄ + 2MnSO₄ + 8H₂O + 5O₂

• 2K₃[Fe(CN)₆] + 2KOH + H₂O₂ → 2K₄[Fe(CN)₆] + 2H₂O + O₂

• PbO₂ + H₂O₂ → PbO + H₂O + O₂

• 2KI + H₂SO₄ + H₂O₂ → K₂SO₄ + I₂ + 2H₂O

The correct order of reactivity of hydrogen halides with ethyl alcohol is

• HF > HCl > HBr > HI

• HCl > HBr > HF > HI

• HBr > HCl > HI > HF

• HI > HBr > HCl > HF

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