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Q. The cause of periodicity of properties is
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Q. The functional unit of the nervous system is the
Q. Mortar is a mixture of water, sand &
Q. Which of the following one of the following vegetable oils is used in the manufacture of paints
Q. What are the numbers of moles of CO₂ which contains 16 g of oxygen?
Q. The working principle of a washing machine is
Q. The rate of cooling depends upon which factor?
Q. The different colours of different stars are due to the variation of
Q. The most reactive among the halogens is
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