Please select a subject first
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Milk is rich in calcium.
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Take of iodine is necessary to prevent anemia.
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Name the sex organs and their hormones.
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Name the pituitary hormones which influence the gonads (sex organs).
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Neem is a good ______.
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The replanting of trees is called ______.
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What is Reforestation?
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Which one the following systems of unit is the British System of unit?
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The value of the atmospheric pressure at sea level is
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One atmosphere is equivalent to 1,00,000 newton force acting on one square metre.
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Why is it not advisable to use a fountain pen while travelling in an aeroplane?
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The mirror used by the ophthalmologist to examine the eye is _______.
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Match the following.
| Convex mirror | Radio telescopes |
| Parobolic mirror | Rear – view mirror |
| Snell’s law | Kaleidoscope |
| Dispersion of light | sin i/sin r =μ |
| Refractive index | Rainbow |
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Give any two applications of a concave and convex mirror.
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Explain the images formed by a concave mirror.
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The shape of the Earth’s magnetic field resembles that of an imaginary ______.
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The Sun and the celestial bodies form Solar system.
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