Q01JEE Main 2004Annual, Paper 1MediumNuclear Chemistry (historical)9× since 2002
Consider the following nuclear reactions
92238M→YXN+224HeYXN→BAL+2β+
The number of neutrons in the element L is
Q02JEE Main 2002Annual, Paper 1EasyNuclear Chemistry (historical)9× since 2002
β - particle is emitted in radioactivity by
Q03JEE Main 2003Annual, Paper 1EasyNuclear Chemistry (historical)9× since 2002
The radionucleide 90234Th undergoes two successive β -decays followed by one α-decay. The atomic number
and the mass number respectively of the resulting radionucleide are
Q04JEE Main 2003Annual, Paper 1EasyNuclear Chemistry (historical)9× since 2002
The half-life of a radioactive isotope is three hours. If the initial mass of the isotope were 256 g, the mass of
it remaining undecayed after 18 hours would be
Q05JEE Main 2004Annual, Paper 1EasyNuclear Chemistry (historical)9× since 2002
The half – life of a radioisotope is four hours. If the initial mass of the isotope was 200 g, the
mass remaining after 24 hours undecayed is
Q06JEE Main 2005Annual, Paper 1EasyNuclear Chemistry (historical)9× since 2002
The photon of hard gamma radiation knocks a proton out of 1224Mg nucleus to form
Q07JEE Main 2007Annual, Paper 1MediumNuclear Chemistry (historical)9× since 2002
A radioactive element gets spilled over the floor of a room. Its half-life period is 30 days. If the initial
activity is ten times the permissible value, after how many days will it be safe to enter the room?
Q08JEE Main 2007Annual, Paper 1EasyNuclear Chemistry (historical)9× since 2002
Which of the following nuclear reactions will generate an isotope?
Q09JEE Main 202122 Jul, Evening shiftEasyNuclear Chemistry (historical)9× since 2002
Isotope(s) of hydrogen which emits low energy β^− particles with t_1/2 value > 12 years is/are
All 9 Nuclear Chemistry (historical) questions by year
