Intext solved problems I — task. Science State Board, Class 10.

PDF chapter test TRY NOW

1. Identify $A$ , $B$ , $C$ , and $D$ from the following nuclear reactions.

(i)

${}_{13}{Al}^{127} + A \to {}_{15}P^{30} + B$

(ii)

${}_{12}{Mg}^{24} + B \to {}_{11}{Na}^{24} + C$

(iii)

${}_{92}U^{238} + B \to {}_{93}{Np}^{239} + D$

(i)

${}_{13}{Al}^{127} + {}_{i}i^{i} \to {}_{15}P^{30} + {}_{i}i^{i}$

(ii)

${}_{12}{Mg}^{24} + {}_{i}i^{i} \to {}_{11}{Na}^{24} + {}_{i}i^{i}$

(iii)

${}_{92}U^{238} + {}_{i}i^{i} \to {}_{93}{Np}^{239} + {}_{i}i^{i}$

Hence,

$A$ is

$B$ is

$C$ is

$D$ is

2. A radon specimen emits radiation of $3.7 \times {10^{3}}\ GBq$ per second. Convert this disintegration in terms of curie.

[HINT:

$one\ curie\ =\ 3.7 \times {10^{10}}\ disintegration\ per\ second$ ]

$1\ Bq$

$=\ 1$ disintegration per second, then

$1 Bq = \frac{i}{i \times i^{i}}$

So,

$3.7 \times {10^{3}}\ GBq$ is

$\begin{array}{l} i \times i^{i} \times i^{i} \times \frac{i}{i \times i^{i}} \\ = i curie \end{array}$

Did you find an error?

26. Intext solved problems I