Gases Quiz - Learn Chemistry
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Gas is one of the four fundamental states of matter. A pure gas may be made up of individual atoms, elemental molecules made from one type of atom, or compound molecules made from a variety of atoms. A gas mixture, such as air, contains a variety of pure gases. Improve your Chemistry Knowledge in this Gases Quiz!
- 1.What will be the volume of solution in dm3 , when 6.02 × 1022 molecules of sugar are present in its 1M solution
- A.
1 dm3
- B.
0.1 dm3
- C.
0.01 dm3
- D.
10 dm3
- 2.When 2g H2 gas and 16g O2 gas react completely to produce H2O. What is non-limiting reactant
- A.
Hydrogen
- B.
Oxygen
- C.
Water
- D.
Both are used Completely
- 3.How much oxygen is required to react completely with 54g of Al to form alumina
- A.
24g
- B.
48g
- C.
72g
- D.
96g
- 4.1 mole of carbon is present in one mole of which of the following species/substance
- A.
CaCO3
- B.
CH3CHO
- C.
CH3COOH
- D.
CaC2
- 5.The term relative atomic mass is used for
- A.
37 amu Cl
- B.
100 amu Ca
- C.
35.5 amu Cl
- D.
96 amu S
- 6.What are the ratio among the volumes of gases 4He ,16CH4 and 32O2, if they are taken in equal masses at STP
- A.
1 : 2 : 8
- B.
1: 1: 1
- C.
1 : 8 : 2
- D.
8 : 2 : 1
- 7.The molecular mass of D2O is
- A.
18.02 amu
- B.
19.04 amu
- C.
20.03 amu
- D.
22.04 amu
- 8.Total number of carbon atoms are present in 44g of CO2
- A.
0.5 NA
- B.
2NA
- C.
1 NA
- D.
3NA
- 9.One mole of each of the following compounds is burnt in excess of oxygen. Which compound will produce three moles of carbon dioxide and three moles of steam only
- A.
C3H8
- B.
C3H7CO2H
- C.
C3H7OH
- D.
CH3COOCH3
- 10.What is volume occupied by 4.4g of N2O at STP
- A.
22400cm3
- B.
2240 cm3
- C.
1120 cm3
- D.
120 cm3
- 11.11200 cm3 of oxygen gas is collected at STP from Hydrilla plant by photosynthesis. The mass of oxygen gas produced is
- A.
32 g
- B.
16 g
- C.
8 g
- D.
4 g
- 12.Which of the following has minimum mass
- A.
6.02×1023 molecules of H2
- B.
22.4 dm3 of He
- C.
0.25 mole of Ne
- D.
10g of Ca
- 13.3×NA number of ionizeable H+ are present in 1 mole of
- A.
H2SO4
- B.
H3BO3
- C.
H3PO4
- D.
CH3COOH
- 14.What is the mass of CaCO3 which on heating produces 0.25 moles of CO2 gas
- A.
12.5 g
- B.
25 g
- C.
50 g
- D.
100 g
- 15.The mass of one mole of electron is
- A.
9.1 × 10–31 kg
- B.
1.602 × 10–19 kg
- C.
0.55 mg
- D.
0.55g
- 16.The number of carbon atoms in 45g of C6H12O6
- A.
6 × NA
- B.
3 × NA
- C.
1.5 × NA
- D.
0.25 × NA
- 17.N2 (g) + O2 (g) --------------> 2NO (g) Volume of nitric oxide gas produced by the following reaction of 7g N2 with excess of oxygen is
- A.
22.4dm3
- B.
5.6 dm3
- C.
11.2 dm3
- D.
2.8 dm3
- 18.Number of grams of NaOH required for complete neutralization of 1mole of H3PO4 on its complete ionization
- A.
120 g
- B.
100 g
- C.
80 g
- D.
40 g
- 19.H2O, HF and Na+ have same
- A.
Mass Number
- B.
Number of Electrons
- C.
Number of protons
- D.
Number of neutrons
- 20.What volume of NH3 is produced on reacting 20cm3 of N2 with 80cm3 of H2
- A.
80 cm3
- B.
40 cm3
- C.
20 cm3
- D.
10 cm3
- 21.Electrolysis of water produce hydrogen and oxygen gas. When 1mole of water is electrolyzed it gives
- A.
1mole of nascent hydrogen
- B.
2 mole of H+ ions
- C.
1 mole of oxygen gas
- D.
½ mole of oxygen gas
- 22.Mole of a substance can be related
- A.
NA
- B.
Molar volume
- C.
Molar mass
- D.
All of these
- 23.The statement which is incorrect about stoichiometric calculation
- A.
All reactants are converted into products
- B.
No side reaction occurs
- C.
Law of conservation of mass and law of definite proportion are obeyed
- D.
Reactions may be reversible
- 24.At STP a gas which has maximum volume
- A.
32g of O2
- B.
4.0g He
- C.
24g of CH4
- D.
4g of H2
- 25.Number of electrons in 34 g of OH- ion is
- A.
20 NA
- B.
2 NA
- C.
10 NA
- D.
5 NA
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