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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
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उत्तर
sugar
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संबंधित प्रश्न
Classify the following as chemical or physical change:
Dissolving common salt in water.
Name a chemical change which takes place in presence of:
Tick (√) the correct alternative from the choice given for the following statement.
The compound rust is a hydrated oxide of
Tick (√) the correct alternative from the choice given for the following statement
A pop sound is heard when a lighted match stick is brought near the mouth of a jar. This indicates the release of gas.
Which of the following are physical changes and which are chemical changes ?
Glowing of an electric bulb
Change is the law of nature and occurs in our everyday life, at all times and in all places.
Differentiate between the following change with a suitable example.
Natural and man-made 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.
Give the reason why the following is considered as chemical changes.
Sulphur when burnt in air evolves a gaseous acidic product.
Give the reason why the following is considered as chemical changes.
A piece of magnesium strip is dropped into a beaker containing dilute hydrochloric acid.
Name the following.
The gaseous product of the chemical change which takes place during respiration in living organisms.
