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प्रश्न
Tick the most appropriate answer.
Photosynthesis requires
विकल्प
heat energy
wind energy
sunlight
sound energy
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उत्तर
sunlight.
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संबंधित प्रश्न
State whether the following is physical or chemical changes.
shaping a piece of glass —
Tick the most appropriate answer.
Physical changes are
Give four difference between physical and chemical changes.
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.
Select the chemical changes from the following list of changes
Drying of a fruit
Select the chemical changes from the following list of changes
Glowing of an electric bulb.
Name the following.
The product of the chemical change in keeping a polished iron nail exposed to the atmosphere.
Assertion: The explosion of fire cracker is a physical change.
Reason: A physical change is a reversible change.
Water is the universal solvent. Why?
Mention a few physical properties of a substance.
