Question 1 of 20 1,623 total questions
The correct balanced equation for the reaction between aluminium metal and hot concentrated tetraoxosulphate(VI)acid is ?
A 2AI(s) + 6H2 SO4(1) \(\to\) AI2(SO4 )3(aq) + 6H2 O(1) + 3SO2(g)
B 2AI(s) + 3H2 SO4(1) \(\to\) AI2 (SO4 )3(aq) + 6H2 O(1) + 3SO2(g)
C 2AI(s) + 4H2 SO4(1) \(\to\) AI2 (SO4 )3(aq) + 8H2 O(1) + 3SO2(g)
D 2AI(s) + 5H2 SO4(1) \(\to\) AI2 (SO4 )3(aq) + 8H2 O(1) + 3SO2(g)
Which of the following gases is monoatomic?
A Argon
B Chlorine
C Nitrogen
D Oxygen
Which of the following polymers in thermosetting?
A Bakelite
B Nylon
C Polypropene
D Polystyrene
Which of the following products of biotechnology can be used as a fuel in place of petrol?
A Butane
B Ethanol
C Ethene
D Propanol
A substance responsible for the sour taste of unripe orange is
A Alkene
B Alkanol
C Alkanoic acid
D Alkanoate
Which of the following process does not take place in domestic water treatment?
A Chlorination
B Flocculation
C Neutralization
D Sedimentation
Which of the following substances is a heavy chemical?
A Ammonia
B Barim Hydroxide
C Hydrochloric acid
D Tetraoxosulphate(VI)acid
Which of the following compounds is a secondary alkanol?
A Ethanol
B 2-methylbutan-2-ol
C 3-methylpentan-2-ol
D Propan-1-ol
Starch could be converted to glucose by the process of
A Condensation
B Dehydration
C Fermentation
D Hydrolysis
Which of the following reactions would take place when concentrated sodium hydroxide solution is added to palm oil?
A Esterification
B Neutralization
C Polymerization
D Saponification
A compound has an empirical formular CH2 O and molecular mass of 90.
A C4H10O2
B C3H10O2
C C3H6O3
D C2H2O4
The complete hydrogenation of benzene gives
A Cyclohexene
B Cyclohexane
C Hexene
D Hexane
Which of the following metals is the strongest reducing agent?
A Sodium
B Silver
C Potassium
D Copper
Consider the following reaction equation:(s) + H2(g) \(\to\) Cu(s) + H2 O(1)
Which of the following statements about an electrochemical cell is correct? Oxidation occurs
A At the anode
B At the cathode
C Through the salt bridge
D In the aqueous solution
A change in the temperature of a saturated solution disturbs the equilibrium between the
A Undissolved solute and the solvent
B Dissolved solute and the solvent
C Dissolved solute and the undissolved solute
D Dissolved solute and the solution
A substance which dissolves readily in organic solvent would
A Be a covalent compound
B Have strong electrostatic forces of attraction
C have a high melting point
D Conduct electricity in molten state
Which of the following compounds is the least soluble in water?
A CaCl2
B CaSO4
C NaCl
D Na2 SO4
Solubility is practically applied in
A Fractional distillation
B The determination of pH
C The determination of saturation in hydrocarbons
D Solvent extraction
Which of the following oxides can be reduced by hydrogen?
A Aluminium oxide
B Magnesium oxide
C Sodium oxide
D Silver oxide
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