NUMS 2020 PAPER

1. Mass of 1 molecule of 02 is:

 
 
 
 

2. The number of moles of CO2 which contain 8.0 g of oxygen are:

 
 
 
 

3. Identify the correct option with same empirical formula for both compounds:

 
 
 
 

4. 1 mole of any substance contains _____ particles:

 
 
 
 

5. What are the Avogadro’s number of particles in 0.25 moles of CO2

 
 
 
 

6. The charge on one kg of electron is

 
 
 
 

7. Which of the following fundamental particle have same mass/kg

 
 
 
 

8. The lightest positive rays obtained is from:

 
 
 
 

9. The amount of energy associated with quantum of radiation directly proportional to:

 
 
 
 

10. X-rays are defined as :

 
 
 
 

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