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______ are used to lift heavy iron pieces.
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What is artificial magnet? Give examples.
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Distinguish between natural and artificial magnets?
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How will you convert a ‘nail’ into a temporary magnet?
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Which of the following is the working principle of Rockets?
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PSLV and GSLV are India’s popular satellites.
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Water contains _____ and _____ element.
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Match the following.
| Atom | Building block of matter |
| Element | Atoms of different kinds |
| Compound | Atoms of the same kind |
| Molecule | Smallest unit of a substance |
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Why are utensils made up of aluminium and brass?
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Name the compounds produced when the following substances burn in oxygen.
- Carbon
- Sulphur
- Phosphorous
- Magnesium
- Iron
- Sodium
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Why does the fish die when it is taken out of water?
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Write the properties of anode rays.
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Give a reason for the following.
Water is a universal solvent.
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Explain the neutralization reactions in our daily life.
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Mark the correct one as:
Assertion: Algae are heterotrophic.
Reason: They do not have chlorophyll.
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External ear (pinna )is supported by
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A structure which provides rigid frame work to the body is called _______.
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Appendicular skeleton in human consists of ______ and ______.
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