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(i) Thunderstorms are accompanied by: |
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(ii) How many types of soil can be categorised on the basis of size of particles? |
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(iii) During heavy exercise, we get cramps in the legs due to accumulation of |
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(iv) The colour of blood is red due to the presence of |
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(v) The excretory substance in fishes is: |
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(vi) The reproductive part of a plant is the: |
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(vii) The motion of a pedal of a bicycle is: |
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(viii) A battery is a group of: |
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(ix) The power of lens is measured in: |
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(x) The percentage of water present in human body is: |
(i) What are nanosecond and microsecond? |
(ii) Change 30 km/hr into m/s. |
Distinguish between the following: |
(i) Acid and alkali |
(ii) Base and alkali |
(iii) Organic acid and mineral add. |
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