Molarity of 0.2 N H₂SO₄ is

• 0.2

• 0.4

• 0.6

• 0.1

An atom of an element A has three electrons in its outermost orbit and that of B has six electrons in its outermost orbit. The formula of the compound between these two will be

• A₃B₆

• A₂B₃

• A₃B₂

• A₂B

The decomposition of a certain mass of CaCO₃ gave 11.2 dm³ of CO₂ gas at STP. The mass of KOH required to completely neutralise the gas is :

• 56 g

• 28 g

• 42 g

• 20 g

Molarity of a given orthophosphoric acid solution is 3M. It's normality is

• 9 N

• 0.3 N

• 3 N

• 1 N

Gram molecular volume of oxygen at STP is

• 3200 cm³

• 5600 cm³

• 22400 cm³

• 11200 cm³

What is the equivalent weight of SnCl₂ in the following reaction?

SnCl₂ + Cl₂ → SnCl₄

• 95

• 45

• 60

• 30

427.

The volume of 10 N and 4 N HCl required to make 1 L of 7 N HCl are

• 0.50 L of 10 N HCl and 0.50 L of 4 N HCl

• 0.60 L of 10 N HCl and 0.40 L of 4 N HCl

• 0.80 L of 10 N HCl and 0.20 L of 4 N HCl

• 0.75 L of 10 N HCl and 0.25 L of 4 N HCl

An oxide of the element contains 20% O₂ by weight. Calculate the equivalent weight of the element.

• 8

• 16

• 32

• 12

For the reaction Fe₂O₃ + 3CO → 2Fe + 3CO₂, the volume of carbon monoxide required to reduce one mole of ferric oxide is

• 22.4 dm³

• 44.8 dm³

• 67.2 dm³

• 11.2 dm³

10 cm³ of 0.1 N monobasic acid requires 15 cm³ of sodium hydroxide solution whose normality is

• 1.5 N

• 0.15 N

• 0.066 N

• 0.66 N