Which of the following acts as both a reducing and an oxidizing agent?
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1988
A substance S is isomorphous with another substance R. When a tiny crystals of S is added into a supersaturated solution of R?
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1988
The ion that may be assumed to have negligible concentration in a sample of water that lathers readily with soap is?
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1988
Which of the following substances is a basic salt?
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1988
What volume of a 0.1 M H3PO4 will be required to neutralize 45.0 cm3 of a 0.2 M NaOH?
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1988
Which of the following in aqueous solution is neutral to litmus?
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1988
Which of the following dilute solutions has the lowest pH value?
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1988
Which property of a reversible reaction is affected by a catalyst?
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1988
Which of the followingstatements is TRUE?
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1988
Which of the following will produce the greatest increase in the rate of the chemical reaction represented by the equation Na2S2O3(aq) + 2HCl(aq) → 2NaCI(aq) + H2O(I) + SO2(g) + S(g)?
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1988
A mixture of starch solution and potassium iodide was placed in a test tube. On adding dilute tetraoxosulphate (lV) acid and then K2Cr2O7 solutions, a blue-black colour was produced. In this reaction, the?
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1988
Which of the following reactions takes place in the cathode compartment during the electrolysis of copper (II) chloride solution?
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1988
Chlorine is produced commercially by?
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1988
The thermal decomposition of copper (ll)trioxonitrate (V) yields copper (ll) oxide, oxygen and?
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1988
Suitable reagents for the laboratory preparation nitrogen are?
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1988
When H2S gas is passed into a solution of iron (III) chloride, the colour changes from yellow to green. This is because?
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1988
Which of the following is used in fire extinguishers?
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1988
Alkanoates are formed by the reaction of alkanoic acid with?