MCQs On Stoichiometry And Stoichiometric Calculations

18 Questions | By Alfredhook3 | Updated: Apr 13, 2023 | Attempts: 736

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MCQs On Stoichiometry And Stoichiometric Calculations - Quiz

Check out these MCQs on stoichiometry and stoichiometric calculations and see how good you're at using chemistry problems based on chemical formulas. Stoichiometry is a branch of chemistry that calculates various quantities of reactants and products of a chemical reaction using balanced chemical equations. How quickly can you solve a stoichiometric calculation accurately? Why don't you play the below quiz and see for yourself? Shall we begin the test? Best of luck, buddy!

Questions and Answers

1.

How many molecules are there in one mole of H₂O?
- A.
  
  6.023 x 10¹⁹
- B.
  
  6.023 x 10²³
- C.
  
  1.084 x 10¹⁸
- D.
  
  None of these
2.

A flask contains 500 cm³of SO₂at STP. The flask contains?
- A.
  
  40 g
- B.
  
  100 g
- C.
  
  50 g
- D.
  
  1.427 g
3.

A necklace has 6 g of diamond in it. What are the number of atoms in it?
- A.
  
  6.02 x 1023
- B.
  
  12.04 x 1023
- C.
  
  1.003 x 1023
- D.
  
  3.01 x 1023
4.

What is the mass of aluminum in204 g of the aluminum oxide, Al₂O₃?
- A.
  
  26 g
- B.
  
  27 g
- C.
  
  54 g
- D.
  
  108 g
5.

The reactant which is consumed earlier and gives least quantity of product is called
- A.
  
  Reactant in excess
- B.
  
  Stoichiometry
- C.
  
  Limiting reactant
- D.
  
  Stoichiometric amount
6.

Which one of the following compounds contains the highest percentage by the mass of nitrogen
- A.
  
  NH₃
- B.
  
  N₂H₄
- C.
  
  NO
- D.
  
  NH₂OH
7.

Vitamin-A has a molecular formula C₂₀H₃₀O. The number of vitamin-A molecules in 500 mg of its capsule will be?
- A.
  
  6.02 x 10²³
- B.
  
  1.05 x 10²¹
- C.
  
  3.01 x 10²²
- D.
  
  3.01 x 10²³
8.

When one mole of each of the following is completely burnt in oxygen, which will give the largest mass of CO₂?
- A.
  
  Carbon monoxide
- B.
  
  Diamond
- C.
  
  Ethane
- D.
  
  Methane
9.

One mole of ethanol and one mole of ethane have an equal
- A.
  
  Mass
- B.
  
  Number of atoms
- C.
  
  Number of electron
- D.
  
  Number of molecules
10.

Methane react with steam to form H₂and CO as shown below. What volume of H₂ can be obtained from 100 cm³of methane at the standard temperature and pressure?
- A.
  
  300 cm³
- B.
  
  200 cm³
- C.
  
  150 cm³
- D.
  
  100 cm³
11.

The Avogadro's constant is the number of ?
- A.
  
  Atoms in 1 g of Helium
- B.
  
  Molecules in 35.5 g of chloride
- C.
  
  Electrons needed to deposit 24 g of Mg
- D.
  
  Atoms in 24 g of Mg
12.

How many mole of oxygen are needed for the complete combustion of two moles of butane?
- A.
  
  2
- B.
  
  8
- C.
  
  10
- D.
  
  13
13.

If four moles of SO₂are oxidized to SO₃, how many moles of oxygen molecules are required?
- A.
  
  0.5
- B.
  
  1.0
- C.
  
  1.5
- D.
  
  2.0
14.

What is the mass of 2 moles of chlorine gas if the relative atomic mass of chlorine is 35.5 amu?
- A.
  
  142 g
- B.
  
  71 g
- C.
  
  35.5 g
- D.
  
  18.75 g
15.

Which of the following statements is incorrect?
- A.
  
  12 g of carbon gas contains one mole of atoms
- B.
  
  28 g of nitrogen gas contains one mole of molecules of N₂
- C.
  
  1dm³of 1.0 mole dm^-3solution of NaCl contains one mole of chloride ions
- D.
  
  None of above
16.

One mole of propane has the same
- A.
  
  Number of H- atoms as one mole of methane (CH₄)
- B.
  
  Number of C-atoms as in one mole of butane (C₄H₁₀)
- C.
  
  Mass as half a mole of hexane (C₆H₁₄)
- D.
  
  Number of molecules as in one mole of ethane (C₂H₆)
17.

What is the mass of one mole of iodine molecules?
- A.
  
  254 g
- B.
  
  74 g
- C.
  
  106 g
- D.
  
  127 g
18.

What volume of SO₂at room temperature and pressure is produced on heating 9.7 g of Zinc sulphide (ZnS) if reaction takes place as follows?
- A.
  
  1.2 dm³
- B.
  
  2.4 dm³
- C.
  
  3.6 dm³
- D.
  
  4.8 dm³
- E.
  
  None of these