Question

1. What is the mass of electron [ ]

a) 9.11 × 10-28 gm b) 9.11 × 10-31 kg

c) Both a and b d) 1.672 × 10-24

gm

2. Which of the following fundamental particle contains with zero charge [ ]

a) Electron b) Proton c) Positron d) Neutron

3. The number of neutrons in an atom is A – Z, what is ‘A’ and Z [ ]

a) Atomic number and mass number b) Mass number and atomic number

c) Neutron number and electrons number d) None of these

4. The mass of neutron is [ ]

a) Higher than electron b) Higher than proton

c) Lighter than electron d) Both a and b

5. Nucleons contains [ ]

a) Electrons and protons b) Protons and neutrons

c) Electrons and neutrons d) None of these

6. Atomic number of calcium is [ ]

a) 10 b) 12 c) 15 d) 20

7. The atomic weight of ‘copper’ is [ ]

a) 65 b) 63.5 c) 59 d) 56

8. The element ‘Sodium’ mass number is equal to ’23’, the number of neutrons in sodium

atom [ ]

a) 11 b) 12 c) 23 d) 20

9. The following elements contains same atomic weight that is ‘X’, that elements are Ar

and Ca what is atomic weight [ ]

a) 20 b) 30 c) 40 d) 50

10. The following element atomic weight greater than “Chlorine” atomic weight [ ]

a) Mg b) N c) S d) Ca​

Answer 1

Answer:

1. b
2. d
3. a maybe

6. d

7.b maybe

8.a

10.d