Half-life of a radioactive substance is 20 min. Difference between points of time when it is 33% disintegrated and 67% disintegrated is approximately-

1. 10 min

2. 20 min 

3. 30 min

4. 40  min

Subtopic:  Radioactivity (OLD NCERT) |
 72%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

When two deuterium nuclei fuse together to form a tritium nuclei, we get a

1. Neutron

2. Deutron

3. α-particle

4. Proton

Subtopic:  Nuclear Binding Energy |
 52%
From NCERT
PMT - 2000
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The most penetrating radiation out of the following is [1997]

1. γ-rays 

2. α-particles

3. β-rays 

4. X-rays

Subtopic:  Types of Decay |
 79%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

In any fission process the ratio mass of fission productsmass of parent nucleus is         [2005]

1. less than 1

2. greater  than 1

3. equal to 1

4. depends on the mass of parent nucleus

Subtopic:  Nuclear Binding Energy |
 63%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The nucleus C48d115, after two successive β-decay will give [1988]

1. P46a115   

2. I49n114

3. S50n113   

4. S50n115

Subtopic:  Types of Decay |
 78%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

In nuclear fission process, energy is released because [2001]

1. mass of products is more than mass of nucleus.

2. total binding energy of products formed due to nuclear fission is more than that the parent fissionable material.

3. total binding energy of products formed due to nuclear fission is less than parent fissionable material.

4. mass of some particles is converted into energy.

Subtopic:  Nuclear Binding Energy |
 60%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The average binding energy of a nucleon inside an atomic nucleus is about [1989]

1. 8 MeV

2. 8 eV

3. 8 J 

4. 8 erg

Subtopic:  Nuclear Binding Energy |
 87%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

A nucleus with Z = 92 emits the following in a sequence:

α, β-, β-, α, α, α, α, α, β-,β-, α, β+, β+, α. The Z of the resulting nucleus is [AIEEE 2003]

1. 74 

2. 76 

3. 78

4. 82

Subtopic:  Types of Decay |
 67%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

In nuclear fission, the percentage of mass converted into energy is about

1.  1%

2.  0.1%

3.  0.01%

4.  10%

Subtopic:  Mass-Energy Equivalent |
 56%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh

The mass number of helium is 4 and that for suphur is 32. The radius of sulphur nuclei is larger than that of helium by

1.  8

2.  4

3.  2

4.  8

Subtopic:  Mass-Energy Equivalent |
 78%
From NCERT
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh
Hints
To view explanation, please take trial in the course.
NEET 2023 - Target Batch - Aryan Raj Singh