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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?
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,...
define-1. slow change 2. fast change
ans needed urgently
why are iron water pipes galvanised
why is germination of seeds a chemical change?
Why is it not advisable to sieve wheat flour?
why do pipes usually crack in winter?
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?
Regards
Alishba
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,...
define-1. slow change 2. fast change
ans needed urgently
why are iron water pipes galvanised
why is germination of seeds a chemical change?
Why is it not advisable to sieve wheat flour?
why do pipes usually crack in winter?