Mole Concept and Stoichiometry Test

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Mole Concept and Stoichiometry Test - 2

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Weekly Quiz Competition

Question 1
1 / -0

4NH₃ + 5O2 ––> 4NO + 6H₂O
What volume of nitrogen monoxide will be produced in the above reaction at the same temperature and pressure if 36 litres of reactants are consumed?

A
36 litres

B
40 litres

C
16 litres

D
24 litres
Question 2
1 / -0

How many electrons are present in 1.7g of methane?

A
6.02 X 10²²electrons

B
6.02 X 10²³ electrons

C
12.04 X 10²² electrons

D
12.04 X 10²³ electrons
Question 3
1 / -0

How many molecules are present in 7 g of nitrogen gas?

A
1.5 X 10²³

B
2.1 X 10²³

C
2.5 X 10²³

D
1.2 X 10²³
Question 4
1 / -0

Which of the following is not an application of Avogadro's law?

A
Explanation of Gay Lussac's law

B
Determination of gram atomic mass

C
Determination of molecular formula of gas

D
Determination of atomicity of a gas
Question 5
1 / -0

Which of the following has the highest number of hydrogen atoms in one mole of its molecule?

A
Calcium hydroxide

B
Water

C
Hydrogen sulphide

D
Methane
Question 6
1 / -0

What volume of methane gas is required to produce 80 ml of HCl gas in the following reaction at STP?
CH₄+ 2Cl₂ ––> CH₂Cl₂ + 2HCl

A
20 ml

B
40 ml

C
60 ml

D
80 ml
Question 7
1 / -0

An element has isotopes X and Y. Atomic mass of Y is 37 and 75% of the element exists in the form of X isotope. What is the atomic mass of X if the atomic mass of the element is 35.5?

A
37

B
35

C
34

D
33
Question 8
1 / -0

Which of the following is the correct arrangement of molecules in increasing order of mass of 0.1 mole of each of these molecules?
CaCO₃, CaCl₂, Na₂SO₄, 10H₂O, Mg
[Ca ––> 40, Na ––> 23, Mg ––> 24, S = 32, C ––> 12, Cl ––> 35.5, O ––> 16, H ––> 1]

A
Mg < CaCO₃ < CaCl₂ < Na₂SO₄. 10H₂O

B
CaCO₃ < Mg < CaCl₂ < Na₂SO₄.10H₂O

C
CaCl₂ < Mg < CaCO₃ < Na₂SO₄. 10H₂O

D
CaCO₃ < CaCl₂ < Mg < Na₂SO₄.10H₂O

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Re-Attempt Weekly Quiz Competition

Mole Concept and Stoichiometry Test - 2

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Mole Concept and Stoichiometry Test - 2

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Question 1

36 litres

40 litres

16 litres

24 litres

Question 2

6.02 X 1022 electrons

6.02 X 1023 electrons

12.04 X 1022 electrons

12.04 X 1023 electrons

Question 3

1.5 X 1023

2.1 X 1023

2.5 X 1023

1.2 X 1023

Question 4

Explanation of Gay Lussac's law

Determination of gram atomic mass

Determination of molecular formula of gas

Determination of atomicity of a gas

Question 5

Calcium hydroxide

Water

Hydrogen sulphide

Methane

Question 6

20 ml

40 ml

60 ml

80 ml

Question 7

37

35

34

33

Question 8

Mg < CaCO3 < CaCl2 < Na2SO4. 10H2O

CaCO3 < Mg < CaCl2 < Na2SO4.10H2O

CaCl2 < Mg < CaCO3 < Na2SO4. 10H2O

CaCO3 < CaCl2 < Mg < Na2SO4.10H2O

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6.02 X 10²²electrons

6.02 X 10²³ electrons

12.04 X 10²² electrons

12.04 X 10²³ electrons

1.5 X 10²³

2.1 X 10²³

2.5 X 10²³

1.2 X 10²³

Mg < CaCO₃ < CaCl₂ < Na₂SO₄. 10H₂O

CaCO₃ < Mg < CaCl₂ < Na₂SO₄.10H₂O

CaCl₂ < Mg < CaCO₃ < Na₂SO₄. 10H₂O

CaCO₃ < CaCl₂ < Mg < Na₂SO₄.10H₂O