First controlled fission of an atom was carried out in ________ on 1938.

Related Mcqs:

1. The protons and neutrons are found in the center of the atom, which is called the _________of the atom?

   A. Nucleus
   B. Headquarters
   C. Hub
   D. None of These

2. In a fission nuclear reaction , a heavy nucleus breaks up into smaller nuclei whereas in another nuclear reaction two or more than two possibly nuclei are fused to form a heavy nucleus This nuclear reaction is called ?

   A. Chemical Reaction
   B. Nuclear reaction
   C. Fission nuclear reaction
   D. Fusion nuclear reaction
   E. None of these

3. Which of the following is used to control rods in nuclear fission?

   A. Graphite
   B. Heavy Water
   C. Cadmium
   D. All of these

   Submitted by: Munwar Ali Sohu

4. The number of electrons of a neutral atom is automatically known if one knows the?

   A. Atomic number
   B. Atomic weight
   C. Number of orbitals
   D. none

5. What are the three subatomic particles of an atom?

   A. Protons,Neutrons & Electrons
   B. Protons,Nucleus & Electrons
   C. Protons,Nucleus & Elements.
   D. Elements,Nucleus & Protons

6. ___________are negatively (-) charged particles of an atom?

   A. Protons
   B. Neutrons
   C. Electrons
   D. None of These

7. An atom is_____________?

   A. smallest indivisible particle in an element
   B. smallest particle of an element which can undergo a chemical reaction
   C. building block of an element
   D. always smaller than molecule

   Submitted by: Mansoor Ul Haque

8. “Each electron in an atom must have its own unique set of quantum numbers” is a statement of_______________?

   A. Aufbau principle
   B. Pauli exclusion principle
   C. Hund’s rule
   D. Periodic law

   Submitted by: Mansoor Ul Haque

9. Which of the following is not a donor atom?

   A. Phosphorus
   B. Antimony
   C. Arsenic
   D. Aluminum

   Submitted by: H@yii

10. The valency of carbon Atom is __________ ?

    A. 1
    B. 2
    C. 3
    D. 4

    Submitted by: Rashid Mehmood