Chemistry Mcqs Set 51

Chemistry Mcqs Set 51

1. The same proportion of carbon and oxygen in carbon dioxide obtained from different sources proves the law of
a. reciprocal proportion                           
b. definite proportion
 
2. In water hydrogen and oxygen are in the ratio by mass
a. 1:8                                                    
b. 8 : 1
 
3. ________ are the building blocks of all matter.
a. Atoms                                            
b. Molecules
 
4. Atoms are extremely small in size and it is expresses in terms of ________m
a. 1A^0                                                          
b.10^10
 
5. Total mass of material present after the chemical reaction is _______ as the total mass before chemical reaction.
a. Barium chloride                         
b. Barium sulphate
 
6. Water consists of hydrogen and oxygen in the ratio _______
a. 1 : 8                                                 
b. 2:1
 
7. Matter is made up of small indivisible particles called ________
a. Molecules                                        
b. atoms
 
8. An atom consists of _____ particles.
a. neutral                                                    
b. charged
 
9. The first experimental evidence for the electrical nature of matter came from the experiments of________
a. John Dalton                                 
b. Michael Faraday
 
10. The two electrodes of Cathode Ray Tube are connected with _____
a. low voltage                                    
b. high voltag