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प्रश्न
Tick (√) the correct alternative from the choice given for the following statement.
A substance which can not sublime is
विकल्प
iodine
camphor
sugar
dry ice
उत्तर
sugar
APPEARS IN
संबंधित प्रश्न
Changes in which only ______ properties of a substance change are called physical changes.
State whether the following is physical or chemical changes.
glowing of a bulb -
Write true or false
Burning of sugar is a temporary change.
Tick the most appropriate answer.
Photosynthesis requires
A physical change is temporary. Explain.
Give the main differences between physical changes and chemical changes.
Ice kept in a beaker, slowly melts and turns into water. The water in the beaker on solidification is freezing turns back to ice. Give four reasons why the change from ice to water and water back to ice is considered a physical change.
Select the correct answer from the choice given below to complete the sentence
The dissolution of lead nitrate in water is deemed as a _________ change.
Classify the following changes as physical and chemical changes
A rough piece of wood is sanded and polished resulting in change in texture, Rusting of a iron nail, Painting the grill, Bending a paper clip, Pounding silver into thin plate, Rolling the chappathi dough into thin wire, Occurrence of day and night, eruption of volcano, burning of matchstick, dosa from the batter, blinking of eyelids, occurrence of a thunderstorm, rotation of the earth, formation of eclipses.
| Sr. No. | Physical changes | Chemical changes |
| 1. | ||
| 2. |
Mention a few physical properties of a substance.
