Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part - 2 JEE Main & Advanced>Chapter 6 - Nuclear Chemistry>DPP 6.2>Q 13

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IMPORTANT

Earn 100

The disintegration series involving emission of $8 α$ and $6 β$ particles are

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Important Questions on Nuclear Chemistry

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JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part - 2 JEE Main & Advanced>Chapter 6 - Nuclear Chemistry>DPP 6.2>Q 14

Which of the following elements have binding energy per nucleon less than

7

?

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Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part - 2 JEE Main & Advanced>Chapter 6 - Nuclear Chemistry>DPP 6.2>Q 15

The mass defect of the nuclear reaction

{}_{5}B^{8} \to_{4} {Be}^{8} +_{1} e^{0}

is

Δm

. The wrong expression is/are

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IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part - 2 JEE Main & Advanced>Chapter 6 - Nuclear Chemistry>DPP 6.2>Q 16

Mass of

1 amu

gives energy equal to

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JEE Main

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Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part - 2 JEE Main & Advanced>Chapter 6 - Nuclear Chemistry>DPP 6.3>Q 1

The nuclidic ratio,

{}_{1}^{3}H

to

{}_{1}^{1}H

in a sample of water is

8.0 \times 10^{- 18} : 1 .

Tritium undergoes decay with a half-life period of

12.3

yr. How many tritium atoms would

10.0 g

of such a sample contain

40

years after the original sample is collected?

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Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part - 2 JEE Main & Advanced>Chapter 6 - Nuclear Chemistry>DPP 6.3>Q 2

{}_{64}{Cu} (half‑life = 12.8 h)

decays by

β^{-}

emission

(38 %)

,

β^{+}

emission

(19 %)

, and electron capture

(43 %) .

Write the decay products and calculate partial half-life for each of the decay processes.

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JEE Main

IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part - 2 JEE Main & Advanced>Chapter 6 - Nuclear Chemistry>DPP 6.3>Q 3

A sample containing $1.68 \times 10^{11}$ atoms of ${}_{38}^{90}{Sr}$ originally has an activity of $0.500 m Ci$ .

What is the specific activity of the sample?

What will the activity of the sample be after $30$ years?

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Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part - 2 JEE Main & Advanced>Chapter 6 - Nuclear Chemistry>DPP 6.3>Q 4

The half-life of

{}^{40}K

is

1.28 \times 10^{9} years .

What mass of this nuclide has an activity of

1.00 μCi ?

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IMPORTANT

Chapterwise/Topicwise Daily Practice Problems (DPP) Physical Chemistry Part - 2 JEE Main & Advanced>Chapter 6 - Nuclear Chemistry>DPP 6.3>Q 5

The half-life of

{}_{11}^{24}{Na}

is

15.0 h

. What percentage of it remains after

60 h

?