Which hydrocarbon does NOT exhibit structural isomerism?
A. C3H6 B. C4H6 C. C4H8 D. C4H10 E. C5H12 Correct Answer: Option A = C3H6 Explanation Alkenes that show structural isomerism are those with 4 carbons and above.
What is formed when starch is completely hydrolysed?
A. fructose B. glucose C. lactose D. maltose E. sucrose Correct Answer: Option B – glucose
Ethene decolourises acidified potassium tetraoxomanganate(VII) solution. Which gas will decolourise bromine water?
A. CH4 B. C2H6 C. C3H6 D. C3H8 E. C6H6 Correct Answer: Option C – C3H6
Which method is used for the purification of copper from its ore?
A. distillation B. electrochemical C. electrolysis D. neutralization E. reduction Correct Answer: Option C – electrolysis
How many Faradays of electricity are required to liberate 9g of aluminium? [Al = 27]
A. 0.1 B. 0.3 C. 1 D. 2.7 E. 3 Correct Answer: Option C = 1Products
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