Chemistry Mcqs Set 50

Chemistry Mcqs Set 50

1. Molecule of Nitrogen is _______
a. diatomic                                  
b. mono atomic
 
2. A molecule of ________ consists of three atoms.
a. Ozone                                                 
b. Oxygen
 
3. Nitrogen is an _______
a. element                                     
b. a compound
 
4. Aluminium iodine is _______
a. reddish brown                              
b. greyish black
 
5. Sulphur dioxide has ______ odour.
a. rotten egg                                
b. pungent
 
6. A marble is an ________ compound.
a. organic                                      
b. inorganic
 
7. ________ is used in fire extinguisher.
a. Baking soda                                 
b. washing soda
 
8. __________ is used in the preparation of sweets and toffees.
a. Sugar                                         
b. table salt
 
9. The formula of calcium chloride is _________
a. Cacl2                                        
b. CaCl
 
10. _________ is the combining capacity of an element.
a. Formula                                     
b. Valency