PRACTICE QUESTIONS OF GENERAL SCIENCE (GS)

 1. Who was the founder of modern Atomic Theory?

A. John Dalton     B. James Ritty      C. Emest Walton      D. None

2. Which one of the following materials is suitable for water purification?

A. Silicones        B. Zeolites       C. Asbestos      D. Quartz 

3. Milk is an example of :

A. Colloidal Solution       B. Emulsion     C. Gel      D. Aerosol 

4. Which of the following are most penetrating power?

A. ɑ - rays       B. 𝛃 - rays       C. γ- rays       D. X - rays

5. Cryogenic engines find applications in

A. Rocket technology              

B. Frost free refrigerator 

C. Submarine propulsion          

D. Research in superconductivity 

6. 'mho' is the unit of 

A. Resistance       B. Specific Resistance      C. Conductance    D. None

7. Which of the following is used as a moderator in nuclear reactor?

A. Ordinary Water       B. Radium       C. Thorium       D. Graphite

8. Optical fiber works on the principle of 

A. Refraction     B. Scattering       C. Interference      D. Total Internal Reflection 

9. The colour of stars depend on their 

A. Temperature     B. Distance     C. Radius     D. Atmospheric pressure 

10. Which of the following is not a nobel gas ?

A. Hydrogen    B. Helium      C. Neon          D. Argon

11. Solar Energy is a _________ source of energy.

A. Chemical    B. Kinetic      C. Non-renewable     D. Renewable

12. Which of the following metals have highest metallic lustre?

A. Iron       B. Aluminum         C. Lead        D. Gold

13. Which of the following is the primary cause of ozone layer depletion?

A. Methane emissions                

B. Chlorofluorocarbons (CFCs)   

C. Carbon Dioxide emissions      

D. Nitrous oxide emissions

14. Which of the following is a non-metal?

 A. Mercury      B. Silver     C. Gold       D. Carbon

15. A phase transition from solid to liquid is called _________

  A. Freezing      B. Melting       C. Changing      D. Boiling

16. What is the reason that Sodium and Potassium are kept immersed in kerosine?

 A. To prevent accidental fires          

 B. To enhance their lustre 

 C. To make them conductive             

 D. To increase their density

17. Which colour of light has highest wave length?

   A. Blue     B. Red      C. Green        D. Violet

18. SI unit if electric charge__________

  A. Tesla    B. Voltage     C. Diopter     D. Coulomb

19. Lactic acid is present in

A. Vinegar      B. Orange      C. Curd       D. Tea

20. What is the approximate value of speed of light in air?

A. 3 × 10⁸ cm/s    B. 3 × 10¹⁰ cm/s   C. 3 × 10¹⁰ m/s     D. B. 3 × 10⁸ km/s