Advertisements
Advertisements
Question
Write true or false
Decomposition of leaves is a fast change.
Options
True
False
Solution
False.
Decomposition of leaves is a slow change.
APPEARS IN
RELATED QUESTIONS
Melting of solid (wax) is a physical change.
True or false
Change of seasons is a non-periodic change.
Write true or false
Burning of paper and formation of curd are reversible changes.
State the various conditions that favour the process of evaporation.
Which of the following are physical changes ?
- melting of iron metal
- rusting of iron metal
- bending of an iron rod
- drawing a wire of iron metal
State the observations seen, when milk in a dish is kept aside for a few hours or more. Is the change which occurs – a physical change or a chemical change. Give reasons.
State which of the following terms connected with change of state of matter i.e.
(a) Melting
(b) Vaporisation
(c) Condensation
(d) Freezing
pertain to –
- Conversion of a liquid into a vapour or gas.
- Conversion of a liquid into a solid.
- Conversion of a solid into a liquid on heating.
______ is the substance that is dissolved in a solvent.
Analogy:
Melting of ice: Physical change.
Popping of popcorn: ______.
Keeping a stone in sunlight for few hours is ______.
