Please select a subject first
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Magnet attracts iron needle.This is ______ change.
Concept: undefined >> undefined
Burning of match stick is a reversible change.
Concept: undefined >> undefined
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Analogy
Curdling of milk : irreversible change :: Formation of clouds : ________change
Concept: undefined >> undefined
Analogy
Dissolution of glucose : reversible change :: Digestion of food: ___________ change
Concept: undefined >> undefined
Choose the odd one out. Give reason for your choice.
Concept: undefined >> undefined
When a candle is lit the following changes are observed.
- Wax melts.
- Candle keeps burning.
- The size of the candle decreases.
- The molten wax solidifies
- Which of the changes can be reversed? Justify your answer
Concept: undefined >> undefined
Mariner’s compass is used to find the
Concept: undefined >> undefined
In the olden days, sailors used to find direction by suspending a piece of ______.
Concept: undefined >> undefined
Circle the odd one and give a reason
Concept: undefined >> undefined
Gypsum is added to the cement for ______.
Concept: undefined >> undefined
What are the ingredients of the cement?
Concept: undefined >> undefined
Explain the process of manufacturing cement.
Concept: undefined >> undefined
Ravi is a farmer; he rears many cattle in his farm. His field has many bio wastes. Advise Ravi how to change this bio waste to compost by using vermi -composting techniques. Explain the benefits of vermi castings.
Concept: undefined >> undefined
______ is an example of textile fibre.
Concept: undefined >> undefined
Cotton cloth is not suitable for summer season.
Concept: undefined >> undefined
Match the following
| 1. | Fibre yielding plant | Chloramine |
| 2. | Hardwood | Spice |
| 3. | Neem | Hemp |
| 4. | Clove | Cereals |
| 5. | Millet | Teakwood |
Concept: undefined >> undefined
Analogy
coconut : fibre :: rose : _______
Concept: undefined >> undefined
Application of force in an object results in motion from a state of ______.
Concept: undefined >> undefined
The space between ______ particles is the greatest one.
Concept: undefined >> undefined
______ is not affected by gravity.
Concept: undefined >> undefined
