KCET 2019 | Atoms and Nuclei Question 34 | Physics

The end product of decay of $${ }_{90} \mathrm{Th}^{232}$$ is $${ }_{82} \mathrm{~Pb}^{208}$$. The number of $$\alpha$$ and $$\beta$$ particles emitted are respectively

$$3,3$$

$$6,4$$

$$6,0$$

$$4,6$$

KCET 2018

MCQ (Single Correct Answer)

-0

The energy equivalent to a substance of mass 1 g is

$18 \times 10^{13} \mathrm{~J}$

$9 \times 10^{13} \mathrm{~J}$

$18 \times 10^6 \mathrm{~J}$

$9 \times 10^6 \mathrm{~J}$

KCET 2018

MCQ (Single Correct Answer)

-0

The half-life of tritium is 12.5 years. What mass of tritium of initial mass 64 mg will remain undecayed after 50 years?

32 mg

8 mg

16 mg

4 mg

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