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प्रश्न
True or false
Change of seasons is a non-periodic change.
विकल्प
True
False
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उत्तर
False.
Change of seasons is a periodic change.
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संबंधित प्रश्न
Fill in the blank.
Changes that occur in nature are called ........................
What role does energy play in initiating a chemical change ?
What are reversible and irreversible changes ? Give one example for each.
State whether the following is physical or chemical changes.
cutting wood into small pieces —
Tick (√) the correct alternative from the choice given for the following statement.
An example of both physical and chemical change is
Fill in the blank
Changes that occur in nature are called ______
Write true or false
Dissolving of solute in a solvent and rusting of iron are both physical changes.
State what is meant by the term – interconversion of matter. Is interconversion of matter a physical change or a chemical change.
Give a reason why – Heating a platinum wire is a reversible change but, heating a magnesium wire is an irreversible 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.
