Mole Concept Quiz 3 – Punjab Meritorious School Preparation Portal

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If we consider that 1/6, in place of 1/12, mass of carbon atom is taken to be the relative atomic mass unit, the mass of one mole of a substance will

decrease twice

increase two fold

remain unchanged

be a function of the molecular mass of the substance

Statement-1 : One mole of SO₂ contains double the number of molecules present in one mole of O₂.

Statement-2 : Molecular weight of SO₂ is double to that of O₂.

Statement- 1 is True, Statement-2 is True, Statement-2 is a correct explanation for Statement -1

Statement -1 is True, Statement -2 is True ; Statement-2 is NOT a correct explanation for Statement – 1

Statement - 1 is True, Statement- 2 is False

Statement -1 is False, Statement -2 is True

The number of moles of oxygen in one litre of air containing 21 % oxygen by volume, under standard conditions are

0.0093 mole

0.21 mole

2.10 mole

0.186 mole

The mass of a molecule of water is

The mass of a molecule of water is

The mass of a molecule of water is

The mass of a molecule of water is

The mass of a molecule of water is

100 ml O₂ and H₂ kept at same temperature and pressure. What is true about their number of molecules

7.5 grams of a gas occupy 5.6 litres of volume at STP. The gas is

7.5 grams of a gas occupy 5.6 litres of volume at STP. The gas is

7.5 grams of a gas occupy 5.6 litres of volume at STP. The gas is

7.5 grams of a gas occupy 5.6 litres of volume at STP. The gas is

7.5 grams of a gas occupy 5.6 litres of volume at STP. The gas is

Question is mentioned below :

33.65 %

32.56 %

23.65 %

22.65 %

Number of atoms in 558.5 g Fe (at. wt. of Fe = 55.85 g mol–1) is

Number of atoms in 558.5 g Fe (at. wt. of Fe = 55.85 g mol–1) is

Number of atoms in 558.5 g Fe (at. wt. of Fe = 55.85 g mol–1) is

Number of atoms in 558.5 g Fe (at. wt. of Fe = 55.85 g mol–1) is

Number of atoms in 558.5 g Fe (at. wt. of Fe = 55.85 g mol–1) is

Question is mentioned below :

Question is mentioned below :

Question is mentioned below :

Question is mentioned below :

Question is mentioned below :

The number of water molecules present in a drop of water (volume 0.0018 mL) at room temperature is

The number of water molecules present in a drop of water (volume 0.0018 mL) at room temperature is

The number of water molecules present in a drop of water (volume 0.0018 mL) at room temperature is

The number of water molecules present in a drop of water (volume 0.0018 mL) at room temperature is

The number of water molecules present in a drop of water (volume 0.0018 mL) at room temperature is

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