How many isomers does pentane have?
A. 6 B. 5 C. 4 D. 3 Correct Answer: Option D – 3
Ethene reacts with hydrogen bromide to give?
A. CH2Br2 B. CH3CH2Br C. C2H2Br2 D. CHBr2 Correct Answer: Option B – CH3CH2Br
The modern process of manufacturing steel for iron is by?
A. treatment with acids B. oxidation C. blast reduction D. treatment with alkanal Correct Answer: Option C – blast reduction
Chlorine gas turns a damp starch-iodide paper?
A. pink B. colourless C. red D. dark blue Correct Answer: Option D – dark blueProducts
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