The value of disintegration constant (k) of a radioactive isotope
A.decreases with increasing pressure
B.increases with increasing temperature
C.increases with increasing concentration
D.is independent of temperature concentration or pressure
A.decreases with increasing pressure
B.increases with increasing temperature
C.increases with increasing concentration
D.is independent of temperature concentration or pressure
A.electron
B.proton
C.neutron
D.positron
A.Deuterium
B.Tritium
C.Hydrogen
D.Helium
A.10
B.12
C.18
D.20
A.1.66 x 10-24 kg
B.1.66 x 10-21 kg
C.1.66 x 10-27 kg
D.1.66 x 10-26 kg
A.equal to that of a proton
B.equal to that of an electron
C.275 times that of an electron
D.1/1850 of the mass of an electron
A.a physical change
B.a chemical change
C.a nuclear change
D.none of the above
A.Ionising power of ?-rays is higher than that of ?-rays
B.Penetrating power of ?-rays is higher than that of ?-rays
C.?-rays are composed of positively charged particles of mass 2
D.?-rays travel faster than ?-rays
A.2N years
B.N2 years
C.N2 years
D.infinity