Chemistry Mcqs Set 41

Chemistry Mcqs Set 41 

1. Release of the compressed spring is_____
(a) an irreversible change                     
(b) a reversible change 
(c) a non-periodic change                      
d) an undesirable change
 
2. Spoilage of food is______
(a) a reversible change                           
(b) a fast change
(c) an undesirable change                    
(d) a periodic change
 
3. Dissolution of washing soda in water is______
(a) an exothermic change                    
(b) an irreversible change
(c) an undesirable change                     
(d) an endothermic change
 
4. Which of the following changes is non-periodic?
(a) heartbeat                                              
(b) earthwuake
(c) occurance of day and night                 
(d) oscillation of pendulum
 
5. Who was the first Indian woman travelled to the space?
(a) Marie Curie             
(b) Indira Nooyee                
(c) Kalpana Chawla                
(d) Saira
 
6. Which of the following statement is correct?
(a) Our body loses weight in space                    
(b) Ourbody gains weight in space
(c) Our eye sight becomes dull                            
(d) All are correct
 
7. The time taken for a tree to turn into coal under the earth is______.
(a) 34 years           
(b) 3400 years               
(c) 34000 years               
(d) 30 crore years
 
8. Which of the following is a slow change?
(a) Burning of paper                         
(b) Brusting of crackers
(c) Rusting of iron                             
(d) Glowing of electric bulb
 
9. Which of the following is a fast change?
(a) Growth of a child                                
(b) Brustin of crackers
(c) Germination of seed                           
(d) Curdling of milk
 
10. Which of the following is a reversible change?
(a) Batter into idly                                      
(b) Green vegetables into cooked food
(c) Making of ornaments from gold       
(d) Curdling of milk