Physical and Chemical Changes Multiple Choice Questions and Answers 11 PDF Download
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MCQs on Physical and Chemical Changes Worksheets 11 Quiz PDF Download
MCQ: By heating color of mixture of sulphur and iron which is yellow turns to
- dark grey
MCQ: When gas is cooled down, it changes its state into liquid. This is called
MCQ: Polythene was discovered in
MCQ: Odour of ammonia is
- strong and pungent
MCQ: Long chain of atom is linked by