QBManager

NUCLEAR PHYSICS

147360 In atomic scale the weakest force in nature is

1 strong force

2 electromagnetic force

3 gravitational force

4 weak nuclear force

TS- EAMCET-10.09.2020

NUCLEAR PHYSICS

147361 The mass number of an atom is 15 and its atomic number 7. Now, this atom absorbs an $α$ particle and emits a proton. What will be the mass number of changed atom?

1 16

2 18

3 17

4 15

Explanation:

B Let, the atom $X$
$_{7} X^{15} +_{2} {He}^{4} \to_{1} P^{1} +_{8} Y^{18}$
So, the mass Number of changed atom is 18

Manipal UGET -2020

NUCLEAR PHYSICS

147368 When boron $_{5} B^{10}$ is bombarded by neutron, alpha particles are emitted. The resulting nucleus has the mass number.

1 11

2 7

3 6

4 15

Explanation:

B When an $α$ particle is emitted 2 protons and 2 neutrons will be lost.
$_{5} B^{10} +_{0} n^{1} \to_{3} {Li}^{7} +_{2} {He}^{4}$
$∵$ Now element formed has at number as 3 .
$∴$ It is a lithium element.
So, the resulting nucleus has the mass number 7 .

SRMJEE-2019

NUCLEAR PHYSICS

147398 What is the number of neutrons in $1 g$ of $_{6} C^{14}$ ?

1

8 \times 6.02 \times 10^{23}

2

7 \times 6.02 \times 10^{23}

3

6 \times 6.02 \times 10^{23}

4

4 \times 6.02 \times 10^{23}

Explanation:

A 1 gram of carbon $= 6.02 \times 10^{23}$ atom
Each carbon atom has $= 14 - 6 = 8$ neutrons
Number of neutrons $= 8 \times 6.02 \times 10^{23}$

SCRA-2011

NUCLEAR PHYSICS

147360 In atomic scale the weakest force in nature is

1 strong force

2 electromagnetic force

3 gravitational force

4 weak nuclear force

TS- EAMCET-10.09.2020

NUCLEAR PHYSICS

147361 The mass number of an atom is 15 and its atomic number 7. Now, this atom absorbs an $α$ particle and emits a proton. What will be the mass number of changed atom?

1 16

2 18

3 17

4 15

Explanation:

B Let, the atom $X$
$_{7} X^{15} +_{2} {He}^{4} \to_{1} P^{1} +_{8} Y^{18}$
So, the mass Number of changed atom is 18

Manipal UGET -2020

NUCLEAR PHYSICS

147368 When boron $_{5} B^{10}$ is bombarded by neutron, alpha particles are emitted. The resulting nucleus has the mass number.

1 11

2 7

3 6

4 15

Explanation:

B When an $α$ particle is emitted 2 protons and 2 neutrons will be lost.
$_{5} B^{10} +_{0} n^{1} \to_{3} {Li}^{7} +_{2} {He}^{4}$
$∵$ Now element formed has at number as 3 .
$∴$ It is a lithium element.
So, the resulting nucleus has the mass number 7 .

SRMJEE-2019

NUCLEAR PHYSICS

147398 What is the number of neutrons in $1 g$ of $_{6} C^{14}$ ?

1

8 \times 6.02 \times 10^{23}

2

7 \times 6.02 \times 10^{23}

3

6 \times 6.02 \times 10^{23}

4

4 \times 6.02 \times 10^{23}

Explanation:

A 1 gram of carbon $= 6.02 \times 10^{23}$ atom
Each carbon atom has $= 14 - 6 = 8$ neutrons
Number of neutrons $= 8 \times 6.02 \times 10^{23}$

SCRA-2011

NUCLEAR PHYSICS

147360 In atomic scale the weakest force in nature is

1 strong force

2 electromagnetic force

3 gravitational force

4 weak nuclear force

TS- EAMCET-10.09.2020

NUCLEAR PHYSICS

147361 The mass number of an atom is 15 and its atomic number 7. Now, this atom absorbs an $α$ particle and emits a proton. What will be the mass number of changed atom?

1 16

2 18

3 17

4 15

Explanation:

B Let, the atom $X$
$_{7} X^{15} +_{2} {He}^{4} \to_{1} P^{1} +_{8} Y^{18}$
So, the mass Number of changed atom is 18

Manipal UGET -2020

NUCLEAR PHYSICS

147368 When boron $_{5} B^{10}$ is bombarded by neutron, alpha particles are emitted. The resulting nucleus has the mass number.

1 11

2 7

3 6

4 15

Explanation:

B When an $α$ particle is emitted 2 protons and 2 neutrons will be lost.
$_{5} B^{10} +_{0} n^{1} \to_{3} {Li}^{7} +_{2} {He}^{4}$
$∵$ Now element formed has at number as 3 .
$∴$ It is a lithium element.
So, the resulting nucleus has the mass number 7 .

SRMJEE-2019

NUCLEAR PHYSICS

147398 What is the number of neutrons in $1 g$ of $_{6} C^{14}$ ?

1

8 \times 6.02 \times 10^{23}

2

7 \times 6.02 \times 10^{23}

3

6 \times 6.02 \times 10^{23}

4

4 \times 6.02 \times 10^{23}

Explanation:

A 1 gram of carbon $= 6.02 \times 10^{23}$ atom
Each carbon atom has $= 14 - 6 = 8$ neutrons
Number of neutrons $= 8 \times 6.02 \times 10^{23}$

SCRA-2011

NUCLEAR PHYSICS

147360 In atomic scale the weakest force in nature is

1 strong force

2 electromagnetic force

3 gravitational force

4 weak nuclear force

TS- EAMCET-10.09.2020

NUCLEAR PHYSICS

147361 The mass number of an atom is 15 and its atomic number 7. Now, this atom absorbs an $α$ particle and emits a proton. What will be the mass number of changed atom?

1 16

2 18

3 17

4 15

Explanation:

B Let, the atom $X$
$_{7} X^{15} +_{2} {He}^{4} \to_{1} P^{1} +_{8} Y^{18}$
So, the mass Number of changed atom is 18

Manipal UGET -2020

NUCLEAR PHYSICS

147368 When boron $_{5} B^{10}$ is bombarded by neutron, alpha particles are emitted. The resulting nucleus has the mass number.

1 11

2 7

3 6

4 15

Explanation:

B When an $α$ particle is emitted 2 protons and 2 neutrons will be lost.
$_{5} B^{10} +_{0} n^{1} \to_{3} {Li}^{7} +_{2} {He}^{4}$
$∵$ Now element formed has at number as 3 .
$∴$ It is a lithium element.
So, the resulting nucleus has the mass number 7 .

SRMJEE-2019

NUCLEAR PHYSICS

147398 What is the number of neutrons in $1 g$ of $_{6} C^{14}$ ?

1

8 \times 6.02 \times 10^{23}

2

7 \times 6.02 \times 10^{23}

3

6 \times 6.02 \times 10^{23}

4

4 \times 6.02 \times 10^{23}

Explanation:

A 1 gram of carbon $= 6.02 \times 10^{23}$ atom
Each carbon atom has $= 14 - 6 = 8$ neutrons
Number of neutrons $= 8 \times 6.02 \times 10^{23}$

SCRA-2011