P-block elements( Carbon Family)

                          P-Block elements (Carbon Family)

Name: _____________________________________                  

Std.: XI Science           

Roll No.: ____________________________                                  

Total Marks: 25                                   

 

Q.1. Fill in the blanks:                                                             6 m                

1. Electronic Configuration of Sn is _____________.                                 

2. _________ are used in making transistors and  semiconductors.                 3. ____ isotope of C is Radioactive.                                                              

4. ___ Oxidation state decreases down the Group.                                          5. Yellow Form of PbO is called  __________.                                               6. _______ is used in making printing Ink.

Q.2. Give Molecular formula of:                                             3 m               1. Iron PentaCarbonyl          2.Orthosilic Acid             3. Water Gas

Q.3. Answer in One sentence each:                                         4 m                1. How does Tin react with water?                                               

2. What is  Silicone?                                                                                          3. Which alloy is used to make permanent magnets? Give its  composition.                                                              

4. How does ionization-enthalpy vary in group 13^th?                                      

Q.4. Write a note on: (Any 2)                                                   6 m        

1. Diamond                         2. Graphite                     3. Fullerene 

Q.5. Answer in Brief:  (Any 3)                                                  6 m

1. Give uses of SiO₂. Also give its uses.      

2. Explain the Preparation of: a) CO   and b) CO₂           

3. Give physical and chemical properties of Carbon Along with its uses.                                                                                                          

4. Explain the anomalous properties shown by Carbon.

All the best