PUC Science 2nd PUC Class 12 - Karnataka Board PUC Question Bank Solutions for Chemistry

Give the reason for bleaching action of Cl₂.

Name two poisonous gases which can be prepared from chlorine gas.

How can you prepare Cl₂ from HCl ? Write reaction only.

Write balanced equations for chlorine gas is passed into a solution of NaI in water.

When RNA is hydrolysed, there is no relationship among the quantities of different bases obtained. What does this fact suggest about the structure of RNA?

Account for the following:

Fluorine forms only one oxoacid HOF.

Draw the structures of the following:
(1) HClO₄
(2) H₃PO₃

Draw the structures of the following molecules: BrF₃

ICl is more reactive than I₂.

Account for the following: Interhalogens are more reactive than pure halogens.

Draw the structure of BrF₅

Draw the structures of the following : ClF₃

Why is ICl more reactive than I₂?

Draw the structure of the following molecule: 

XeF₄

Account for the following:

Helium is used in diving apparatus.

Draw the structures of the following molecules: XeF₂

What happens when: XeF₄ reacts with SbF₅?

Which noble gas has the lowest boiling point?

Which noble gas is used in filling balloons for meteorological observations?

Complete the equation :​ XeF₂+PF₅ →