A. 3/4th of it will disintegrate in two months
B. It will completely disintegrate in two months
C. It will completely disintegrate in four months
D. 1/8th of it will remain intact at the end of four months
Related Mcqs:
- What is the average life of a radioactive atom having a ‘half life period’ of T ?
A. 1.44 T
B. 0.144 T
C. 14.4 T
D. 2T - 75% of a radioactive element decays in 6 hours. Its half life period is ______________ hours?
A. 3/4
B. 1/6
C. 3
D. 4 - The half life period of a radioactive element depends on its _______________________?
A. Temperature
B. Pressure
C. Amount
D. None of these - If 4 gm of a radioisotope has a half life period of 10 days, the half life of 2 gm of the same isotope will be ____________ days?
A. 5
B. 10
C. 20
D. 30 - The half life period of a radioactive element depends upon the___________________?
A. Temperature
B. Pressure
C. Amount of element present
D. None of these - The half life period of a radioactive element is 100 days. After 400 days, one gm of the element will be reduced to ______________ gm?
A. 1/4
B. 1/8
C. 1/2
D. 1/16 - Emission of β-particles during radioactive decay of a substance is from__________________?
A. Innermost shell
B. Nucleus
C. Outermost shell
D. None of these - The amount of a radioactive material (having a half life of 100 years) remaining after 400 years will be ______________ of its original weight?
A. 1/2
B. 1/4
C. 1/8
D. 1/16 - A radioactive substance does not emit________________?
A. α-ray
B. Proton
C. Position
D. β-ray - The amount of a radioisotope remaining undecayed after a time equal to four times its half life, will be _____________ percent?
A. 3.125
B. 6.25
C. 12.50
D. 25
