Which one of the following is not a radioactive element ?

Related Mcqs:

1. Which of the following is a positively charged particle emitted by a radioactive element?

   A. Beta Rays
   B. Alpha Rays
   C. Gamma Rays
   D. None of these

   Submitted by: AKBAR ALI

2. The half life of a radioactive element is 8-days. How long it take to reduce it from 10 mg to 5 mg?

   A. 4 days
   B. 12 days
   C. 16 days
   D. 8 days
   E. None of these

3. Radioactive decay obeys which one of the following law ?

   A. N=Noe-λt
   B. N=Noeλt
   C. N=Noe-λt/2
   D. No=N(1+eλt)

4. Radioactive isotope of Uranium used in Nuclear Bomb is ?

   A. 92 U 235
   B. 92 U 234
   C. 92 U 233
   D. 92 U 238

5. For chain reaction to build up the size of the radioactive target should be______________?

   A. Greater than the critical size
   B. Less than the critical size
   C. Equal to the critical size
   D. All of above can build up a change reaction

6. Radioactive materials can be identified by measuring their_______________?

   A. Hardness
   B. Density
   C. Mass
   D. Half life

7. Which of the following is a transition element?

   A. Cl
   B. Cu
   C. S
   D. None of these

   Submitted by: Majid Ali

8. Which is the most electro-negative element among the following _________?

   A. Fluorine
   B. Bromine
   C. Sodium
   D. Oxygen

   Submitted by: Malik Asghar Hussain

9. Which is the most abundant element in the atmosphere?

   A. Nitrogen
   B. Hydrogen
   C. Nickle
   D. Oxygen

   Submitted by: Arsalan hashmi

10. The heaviest naturally-occurring element is_________?

    A. Radium
    B. Platinum
    C. Uranium
    D. Cadmium

    Submitted by: Malik Asghar Hussain