Subject

Chemistry

Class

CBSE Class 12

Pre Boards

Practice to excel and get familiar with the paper pattern and the type of questions. Check you answers with answer keys provided.

Sample Papers

Download the PDF Sample Papers Free for off line practice and view the Solutions online.
Advertisement

 Multiple Choice QuestionsShort Answer Type

1.

‘Crystalline solids are anisotropic in nature’. What does this statement mean?

4591 Views

2. Express the relation between conductivity and molar conductivity of a solution held in a cell.
2145 Views

3.

Define electrophoresis ? 

759 Views

4.

Draw the structure of XeF2 molecule. 

728 Views

Advertisement
5.

The chemistry of corrosion of iron is essentially an electrochemical phenomenon. Explain the reactions occurring during the corrosion of iron in the atmosphere.

1444 Views

Advertisement

6.

Determine the values of equilibrium constant (KC) and  incrementG° for the following reaction: 

Ni left parenthesis straight s right parenthesis space plus 2 Ag to the power of plus left parenthesis aq right parenthesis space rightwards arrow Ni to the power of 2 plus end exponent space left parenthesis aq right parenthesis space plus 2 Ag space left parenthesis straight s right parenthesis comma space straight E to the power of 0 equals 1.05 straight V space left parenthesis IF space equals 96500 space mol to the power of negative 1 end exponent right parenthesis space


1172 Views

Advertisement
7. Distinguish between ‘rate expression’ and ‘rate constant’ of a reaction.
1159 Views

8.

State reasons for each of the following: 

The N-O bond in  is shorter than the N-O bond in 

1102 Views

Advertisement
9.

State reasons for each of the following: 

SF6 is kinetically an inert substance. 

978 Views

10.

State reasons for each of the following: 

(i) All the P-Cl bonds in PCl5 molecule are not equivalent. 

(ii) Sulphur has a greater tendency for catenation than oxygen.

918 Views

Advertisement