SOURCES OF ENERGY TEST PAPER

1.      A steam engine coverts the heat energy of steam into

(a) Electrical energy         

(b) Nuclear energy

(c) Mechanical energy       

(d) None of these  

2.      A motor coverts electrical energy into

(a) Mechanical energy      

(b) Chemical energy

(c) Nuclear energy             

(d) Thermal energy 

3.      A battery coverts chemical energy into

(a) Mechanical energy       

(b) Solar energy

(c) Electrical energy          

(d) None of these  

4.      Solar energy can be used to produce

(a)    Electrical energy

(b)   Mechanical energy

(c)    Heat energy                 

(d) All the above

5.      The fractional distillation of coaltar yields

(a) Carbon disulphide       

(b) Kerosene oil

(c) Carbon tetrachloride    

(d) Benzene 

6.      Which of the following is not used as a rocket fuel?

(a) Synthetic rubber          

(b) Liquid hydrogen

(c) Paraffin                       

(d) Liquid nitrogen

7.      Which of the following compound has a least Heating value?

(a) Alcohol                        

(b) Biogas

(c) Wood                           

(d) Coal

8.      In chulhas, gaps are left between the logs

(a)    To decrease the ignition temperature of the fuel

(b)   To allow the air to enter and facilitate fuel burning

(c)    To cut off of the supply of air

(d)   All of these 

9.      The vast amount of sea weeds present in oceans may provide an endless source of

(a) Nuclear energy             

(b) Methane

(c) Thermal energy ocean

(d) None of these 

10.  The energy of water is called

(a) Mechanical energy      

(b) Hydro energy

(c) Solar energy                 

(d) None of these 

11.  Which of the following fuel is different from others?

(a) Water gas                     

(b) Coal gas

(c) Producer gas                

(d) Coke

12.  Which of the following fuel is different from others?

(a) Diesel                           

(b) Gasoline

(c) Alcohol                        

(d) Lignite

13.  The efficiency of the modern solar cells from selenium is up to

(a) 25%                             

(b) 40%

(c) 65%                             

(d) 80%

14.  The box-type solar cooker cannot be used

(a)    For frying and baking

(b)   During night time

(c)    During the cloudy days

(d)   All the above are correct

15.  The group of solar cells joined together in a definite pattern is called a

(a) Battery                        

(b) Solar heater

(c) Solar cooker                

(d) Solar cell panel 

16.  Which of the following can be used to fabricate a solar cell?

(a) Platinum                       

(b) Gold

(c) Silver                            

(d) Selenium

17.  Every hot object emits

(a) Infrared rays               

(b) Visible rays

(c) X-rays                          

(d) All the above