Nuclear Chemistry · Chemistry · NEET
MCQ (Single Correct Answer)
1
The half life of a first order reaction is 2000 years. If the concentration after 8000 years is 0.02 M, then the initial concentration was :
NEET 2022 Phase 2
2
A nuclide of an alkaline earth metal undergoes radioactive decay by emission of the periodic table to which the resulting daughter element would belong is
AIPMT 2005
3
The radioactive isotope $${}_{27}^{60}$$Co which is used in the treatment of cancer can be made by (n.p) reaction. For this reaction the tarfet nucleus is
AIPMT 2004
4
The radioistope, tritium ($${}_1^3$$H) has a half-life of 12.3 years. If the initial amount of tritium is 32 mg, how many milligrams of it would remain after 49.2 years?
AIPMT 2003
5
$${}_{92}^{235}$$U, nucleus absorbs a neutron and distintegrate in $${}_{54}^{139}$$Xe, $${}_{38}^{94}$$Sr and $$x$$ so, what will be product $$x$$?
AIPMT 2002
6
A human body required 0.01 m activity of radioactive substance after 24 hours. Half life of radioactive substance is 6 hours. Then inhection of maximum activity of radioactive substance that can be injected is
AIPMT 2001
7
If a $${}_b^aX$$ species emits first a position, then two a and two b particles and in the last, one a, is also emitted and gets converts to $${}_d^c$$Y species. So correct relation is
AIPMT 2001
8
A 300 grams radioactive sample at initial half life is 3 hours. After 18 hours remaining quantity
AIPMT 2000