Atoms and Molecules Test

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Atoms and Molecules Test - 6

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Weekly Quiz Competition

Question 1
1 / -0

Which of the following is the chemical symbol for nitrogen gas?

A
N₂

B
N

D
N₃

E
Ni
Question 2
1 / -0

The amount of substance is measured in

A
gram

B
kilogram

C
milligram

D
mole
Question 3
1 / -0

Latin name for iron is

A
ferrous

B
ferrum

C
ferric

D
none of these
Question 4
1 / -0

Which of the following pairs of gases contains the same number of molecules?

A
8 g of O₂ and 22 g of CO₂

B
16 g of O₂ and 14 g of N₂

C
32 g of O₂ and 32 g of N₂

D
28 g of N₂ and 22 g of CO₂
Question 5
1 / -0

Which of the following represents a correct chemical formula?

A
CaCl

B
NaSO₄

C
NaS

D
NaCl
Question 6
1 / -0

Which of the following is correct symbol of sodium ion

A
Na

B
Na⁺

C
So

D
So⁺
Question 7
1 / -0

3.42 g sucrose are dissolved in 18 g of water in a beaker. The number of oxygen atoms in the solution are

A
6.68 × 10²³

B
6.09 × 10²²

C
6.022 × 10²³

D
6.022 × 10²⁴
Question 8
1 / -0

Which of the following is/are diatomic molecules?

(i) Oxygen

(ii) Hydrogen

(iii) Nitrogen

(iv) Chlorine

Select the correct alternative:

A
(i) and (ii) are true

B
(ii) and (iii) are true

C
(i), (iii) and (iv) are true

D
All are true
Question 9
1 / -0

Which of the following symbols is incorrect?

(i) Helium (He)

(ii) Aluminium (AL)

(iii) Carbon (c)

(iv) Cobalt (CO)

Select the correct alternative:

A
(i) and (ii) are true

B
(i), (ii) and (iii) are true

C
(ii), (iii) and (iv) are true

D
(i), (iii) and (iv) are true
Question 10
1 / -0

The correct formula of Magnesium Chloride is

A
MgCl₂

B
MgCl

C
Mg₂Cl₂

D
MgCl₃

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Re-Attempt Weekly Quiz Competition

Atoms and Molecules Test - 6

Result

Atoms and Molecules Test - 6

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Question 1

N2

N

N3

Ni

Question 2

gram

kilogram

milligram

mole

Question 3

ferrous

ferrum

ferric

none of these

Question 4

8 g of O2 and 22 g of CO2

16 g of O2 and 14 g of N2

32 g of O2 and 32 g of N2

28 g of N2 and 22 g of CO2

Question 5

CaCl

NaSO4

NaS

NaCl

Question 6

Na

Na+

So

So+

Question 7

6.68 × 1023

6.09 × 1022

6.022 × 1023

6.022 × 1024

Question 8

(i) and (ii) are true

(ii) and (iii) are true

(i), (iii) and (iv) are true

All are true

Question 9

(i) and (ii) are true

(i), (ii) and (iii) are true

(ii), (iii) and (iv) are true

(i), (iii) and (iv) are true

Question 10

MgCl2

MgCl

Mg2Cl2

MgCl3

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N₂

N₃

8 g of O₂ and 22 g of CO₂

16 g of O₂ and 14 g of N₂

32 g of O₂ and 32 g of N₂

28 g of N₂ and 22 g of CO₂

NaSO₄

Na⁺

So⁺

6.68 × 10²³

6.09 × 10²²

6.022 × 10²³

6.022 × 10²⁴

MgCl₂

Mg₂Cl₂

MgCl₃