Engineering Online MCQ Number 0776 – online study, assignment and exam

Multiple choice question for engineering Set 1 1. What colour change is observed when few drops of alcoholic NaOH is added to polyvinyl chloride solution? a) colourless to red b) colourless to yellow c) colourless to blue d) colourless to grey [learn_more caption=”View Answer”]Answer: b [Reason:] When few drops of alcoholic NaOH is added to…

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