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प्रश्न
State whether the following is physical or chemical changes.
glowing of a bulb -
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उत्तर
physical change,
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संबंधित प्रश्न
Fill in the blank.
A new substance is formed in a ............... change.
State whether the following is physical or chemical changes.
photosynthesis —
True or false
Is melting of ice a reversible change?
Photosynthesis cannot take place at night.
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.
What type of change is colouring of a paper?
______ is the Universal Solvent.
A physical change is generally____________.
Give two examples for the following case:
Physical changes which are not reversible
Give an example of a physical change in which the color of the substance changes.
