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प्रश्न
True or false
Dissolving of a solid in liquid is a physical change.
पर्याय
True
False
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उत्तर
True
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संबंधित प्रश्न
Match the columns
| column A | coulmn B |
| 1. A change which cannot be easily reversed | a. man-made change |
| 2.A change that repeats itself at regular intervals | b. chemical change |
| 3. A change that is made by humans | c. physical change |
|
4. A change in which the original substance cannot be obtained |
d. periodic change |
| 5. A change where no new substance is formade | e. irreversible change |
| f. slow change |
Write true or false for the statement.
Burning of paper and formation of curd are reversible changes
What do you observe when :
lighted match stick is brought near the mouth of the test tube containing hydrogen gas.
Fill in the blank
Chemical change occurs as a result of __________ between two substances.
State whether the following is physical or chemical changes.
(energy produced) dissolving sugar in water —
Tick the most appropriate answer.
Photosynthesis requires
Classify the following as physical or chemical change :
Formation of curd from milk
Classify the following as a physical or a chemical change.
Melting of wax
Fill in the blank.
A change, which alters the composition of a substances, is known as a___________ change.
Adding sugar to milk is a physical change.
