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प्रश्न
Classify the Following as a Physical Or a Chemical change.
Glowing of an Electric Bulb
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उत्तर
Physical change
APPEARS IN
संबंधित प्रश्न
Choose the most appropriate answer.
Rising and setting of the sun at a given place is a
Write short answer.
Give two examples of periodic changes
State whether the following is physical or chemical changes.
heating a mixture of iron filings and sulphur—
Solve this crossword by using the clues that follow-
Across
1. Energy in the form of sunlight is absorbed by the green plants in this process.
4. The reddish-brown substance formed over iron in the presence of oxygen and moisture.
5. This change is permanent and irreversible.
6. The process in which a solid directly changes into gaseous state.
Down
1 . It is the change that takes place in case of swinging pendulum of a clock. –
2. Occurrence of this is a non-periodic change as well as a natural change.
3. It is a physical change.
What will you take into account while identifying the following?
A physical change in a substance.
Select the correct answer from the choice given below to complete the sentence
The energy required for completion of a physical change is ______________ when the change is reversed.
Name the following.
The salt obtained when a chemical change takes place on the addition of iron to dilute sulphuric acid.
Stretching gold coin into a ring is a ______ change.
Wood to sawdust:______:: Wood to Ash: Chemical change
Fill in the blanks in the following statements using the words given in the box.
| rusted, colourful, substance, chemical, physical, reversible, iron oxide, object |
- Making sugar solution is a ______ change.
- A physical change is generally ______.
- Grinding of wheat grain changes its size. It is a ______ change.
- Iron benches kept in lawns and gardens get ______. It is a ______ change because a new ______ is formed.
