Atoms Test

Result

Atoms Test - 3

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Weekly Quiz Competition

Question 1
1 / -0

Canal ray experiment lead to the discovery of

A
protons

B
neutrons

C
electrons

D
nucleus
Question 2
1 / -0

Who discovered neutrons?

A
Thomson

B
Chadwick

C
Bohr

D
Rutherford
Question 3
1 / -0

Which of the following options is the largest particle?

A
Hydrogen

B
Proton

C
Neutron

D
Electron
Question 4
1 / -0

Mass of a neutron is

A
same as proton

B
much less than that of proton

C
slightly less than that of proton

D
slightly more than that of proton
Question 5
1 / -0

Which of the following options is not a part of atomic nucleus?

A
Electron

B
Proton

C
Neutron

D
Both (2) and (3)
Question 6
1 / -0

Which among the following options represents isobars?

A
_bX^a, _{b + 1}Y^a

B
_bX^a, _cY^b

C
_bX^a, _b–1Y^a-2

D
_bX^a, _bY^a+1
Question 7
1 / -0

How many electrons are there in the valence shell of an element having atomic number 8?

A
8

B
6

C
2

D
4
Question 8
1 / -0

Which of the following options is the atomic number of phosphorus?

A
13

B
12

C
6

D
15
Question 9
1 / -0

What is the valency of an element having atomic number 10?

A
2

B
1

C
0

D
3
Question 10
1 / -0

If the number of electrons, protons and neutrons of an atom is 8, 8 and, 9, respectively, what will be the mass number of that element?

A
16

B
20

C
18

D
17
Question 11
1 / -0

If atomic number of an element is 20, then how many electrons are present in that element?

A
11

B
21

C
10

D
20
Question 12
1 / -0

If atomic number and mass number of an element are 11 and 23, respectively, what would be the number of neutrons present in it?

A
11

B
12

C
23

D
10
Question 13
1 / -0

What is the maximum number of electrons present in N - shell?

A
8

B
18

C
64

D
32
Question 14
1 / -0

How many valence electrons are present in silicon?

A
4

B
5

C
3

D
2
Question 15
1 / -0

What is the atomic number of an element that possesses 20 electrons?

A
40

B
60

C
20

D
22
Question 16
1 / -0

Which of the following statements contradicts Dalton`s atomic theory?

A
A chemical change involves rearrangement of atoms.

B
Atoms form ions by gain or loss of electrons.

C
The number of atoms may change when a substance changes from solid to gaseous state.

D
Total number of atoms during a chemical change remains unaltered.
Question 17
1 / -0

Who proposed nuclear model of atoms?

A
Neil Bohr

B
Thomson

C
Rutherford

D
Bohr
Question 18
1 / -0

Which of the following statements is not true with regard to matter?

A
Atom is electrically neutral.

B
Atoms cannot exist independently.

C
Atom can be divided into smaller particles.

D
Atoms combine to form molecules.
Question 19
1 / -0

Atomic number of an element is 11 and mass number of that element is 23. How many protons are present in the atom?

A
11

B
12

C
22

D
23
Question 20
1 / -0

Which of the following elements has the maximum atomicity?

A
Phosphorus

B
Sulphur

C
Hydrogen

D
Ozone

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Atoms Test - 3

Result

Atoms Test - 3

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SHARING IS CARING

Question 1

protons

neutrons

electrons

nucleus

Question 2

Thomson

Chadwick

Bohr

Rutherford

Question 3

Hydrogen

Proton

Neutron

Electron

Question 4

same as proton

much less than that of proton

slightly less than that of proton

slightly more than that of proton

Question 5

Electron

Proton

Neutron

Both (2) and (3)

Question 6

bXa, b + 1Ya

bXa, cYb

bXa, b–1Ya-2

bXa, bYa+1

Question 7

8

6

2

4

Question 8

13

12

6

15

Question 9

2

1

0

3

Question 10

16

20

18

17

Question 11

11

21

10

20

Question 12

11

12

23

10

Question 13

8

18

64

32

Question 14

4

5

3

2

Question 15

40

_bX^a, _{b + 1}Y^a

_bX^a, _cY^b

_bX^a, _b–1Y^a-2

_bX^a, _bY^a+1