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POTU just finished solving your NCERT Textbook Questions. Check them out here
what is physical change, chemical change, slow change, fast change, periodic change, non-periodic change, desirable change and undesirable change ?
all physical changes are reversible and only chemical changes are irreversible.do you agree?give reasons and examples.
who invented television?
why are iron water pipes galvanised
define-1. slow change 2. fast change
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why is germination of seeds a chemical change?
HOT QUESTION: THINK AND ANSWER:
1) Tearing of paper is irreversible. It is, therefore , a chemical change. Do you agree? Give reasons.
2) A potato remains a potato even after it is cooked. Therefore,...
Why is it not advisable to sieve wheat flour?
why do pipes usually crack in winter?