How many faradays of electricity are required to liberate 9g aluminium? (AI = 27)

• A. 0.1
• B. 0.3
• C. 1.0
• D. 2.7

One of these is another form of oxygen

• A) hydroxide
• B) ozone
• C) peroxide
• D) sulphoxide

What amount of electricity is required to deposit one mole of aluminium from a solution of AlCl₃?

• A. One Faraday
• B. One ampere
• C. Three Faradays
• D. Three amperes

Which of the following is NOT used as a raw material in the Solvay process?

• A. Ammonia
• B. Sodium chloride
• C. Calcium trioxocarbonate (IV)
• D. Sodium trioxocarbonate (IV)

The fundamental difference between the three states of matter is the

• A. shape of their particles
• B. number of particles in each state
• C. shape of the container they occupy
• D. degree of movement of their particles

Which of the following arrangement of elements is in decreasing order of electronegativity?

• A. Na, Mg, Al, Si, P
• B. Na, Al, Mg, P, Si
• C. P, Mg, Na, Si, Al
• D. P, Si, Al, Mg, Na

Classification of alkanols is based on the

• A. number of carbon atoms present in the compound
• B. molecular mass of the compound
• C. molecular formula of the compound
• D. number of alkyl groups bonded to the carbon having the hydroxyl group

Which of the following substances is a mixture?

• A) granulated sugar
• B) sea water
• C) sodium chloride
• D) Iron fillings

If 50 cm³ of a saturated solution of KNO₃ at 40^oC contained 5:05 g of the salt, its solubility at the same temperature would be [KNO₃ = 101]

• A. 1.0 mol dm^?3
• B. 1.5 mol dm^?3
• C. 2.0 mol dm^?3
• D. 5.0 mol dm^?3

The position of equilibrium in a reversible reaction is affected by

• A. particle size of the reactants
• B. vigorous stirring of the reaction mixture
• C. presence of a catalyst
• D. change in concentration of the reactants