HSSC-I Chemistry Lectures & Assignments

 1.    Calculate the number of molecules of o2 produced when 4 mole of KCLO3 is heated as 2KCLO3 2KCL+3o2.

2.    Calculate the mass percentage of each element in glucose (C6H12O6)

3.    How many covalent bonds are present in 9g of H2o

4.    The actual yield is lesser that the theoretical yield. Give reason.

5.    Write equations for the reaction when  and   are bombarded with neutrons.

6.    Briefly explain the Azimuthal Quantum No.

7.    Calculate the no of molecule of O2 produced by thermal decomposition of 490g of KCCO3.

8.    Calculate the radius of 4th Orbit of electron in H- atom

9.    State Heisenberg uncertainty principle.

10.Why 4s orbital lower in energy that 3d orbital?

11.   What are uses of X-rays?

12. What is Hund’s rule?

13. Give the properties of cathode rays.

14.Briefly explain the Azimuthal number.

15. Define Graham’s law of diffusion and effusion.Give its mathematical form.

16. Differentiate between bounding molecular orbital and antibonding  molecular.

17. Why gases are compressible but liquids are not compressible.

18.Differentiate between hexagonal close packing and cubic close paking.

19. What are buffer solutions? How are they prepared?

20.                      Explain how Galvanization protects iron from rusting?

21. Explain why powdered Zn reacts faster with an acid than a piece of Zn?

22.                       What is reverse osmosis?explain how sea water is made drinkable by reverse osmosis?

23.                       Calculate the molarity of solution made by maxing 250 cm3 of water.

24.                      Briefly explain the internal energy of the system.

25.                       Discuss the shape of the following molecules on the bases of valence shell electron form repulsion theory.

(a). SO3     (b). Becl2      (c). CH4

 

1.       Calculate the mass percentage of each element in glucose (C6H12O6)

2.     How many covalent bonds are present in 9g of H2o

3.     The actual yield is lesser that the theoretical yield. Give reason.

4.     Write equations for the reaction when  and   are bombarded with neutrons.

5.     Briefly explain the Azimuthal Quantum No.

6.     Calculate the no of molecule of O2 produced by thermal decomposition of 490g of KCCO3.

7.     Calculate the radius of 4th Orbit of electron in H- atom

8.     State Heisenberg uncertainty principle.

9.     Why 4s orbital lower in energy that 3d orbital?

10.  What are uses of X-rays?

11.    What is Hund’s rule?

No comments:

Post a Comment