CBSE Class 11 Chemistry Sample Paper Set 19

1. In terms of period and group, where would you locate the element with Z = 114?  

2. Which element do you think would have been named by a) Lawrence Berkeley Laboratory b) Seaborg’s group? 

3. N₂O and CO₂ have the same rate of diffusion under same conditions of temperature and pressure. Why?  

4. Why liquids have a definite volume but no definite shape?  

5. Calculate the molarity of a solution of ethanol in water in which the mole fraction of ethanol is 0.040.  

6. Write the structural formula of a) 2-methylbutane b) 2-ethoxypropane.  

7. Explain the differences in the properties of diamond and graphite based on their structures.  

8. Define Dalton’s law of partial pressures. How the pressure of dry gas is determined using this law?  

9. How is the bond order related to bond length of a molecule?  

10. Explain why alkali and alkaline earth metals cannot be obtained by chemical reduction method.  

11. The first ionization enthalpy values in kJ/mol of group 13 elements are:

                B               Al                   Ga            In                  Tl

             801             577              579             558               589

Explain the deviation from the general trend of the above.

12. What is meant by a) delocalization b) resonance energy? 

13. Draw the structures to show the position isomerism in arenes.

14. An atom of an element contains 29 electrons and 35 neutrons. Deduce a) the no. of protons b) the electronic configuration of the element. 

15. Why BeH₂ molecule has a zero dipole moment although the Be – H bonds are polar.

16. Predict the dipole moment of a molecule of the type AX₄ having a square planar geometry.

17. Describe the structure of common form of ice. 

18. 2 L of an ideal gas at a pressure of 10 atm expands isothermally into a vacuum until its total volume is 10 L. How much heat is absorbed and how much work is done in the expansion?

Please refer to attached file for CBSE Class 11 Chemistry Sample Paper Set 19