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CHETANA PUBLICATION-Substances in Common Use-EXERICSE
- Rock salt is ………..in colour.
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- Stong odour in swimming pool is due to ………… .
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- Molecular formula of sodium bicarbonate is ………… .
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- Soap is …………..in nature.
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- Molecualr formula for Magnesium bromide is. ………… .
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- The number of molecules of water of crystallization in washing soda is...
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- The chemical name of baking soda is ………..
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- …………..is used in treatment of hyperthyroidism.
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- The chemical name of Teflon is……….. .
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- 25% of NaCl is known as ………… .
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- …………..gas os released when bleaching powder is added to water.
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- Washing soda is ………….as it absorbs moisture if left exposed to air.
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- …………is used to make had water soft.
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- Molecular formula for Alum is ……….. .
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- ………..is used in blood test for diagnosing anaemia.
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- High grade of ……………..and …………..are used as raw material to manufacture...
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- Pickels, jams and sauce contain small quantities of ……….and ………. .
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- Excessive consumption of foods with added food colours leads to diseas...
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- Melting point of Teflon is …………… .
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- Anodizing is done by ………….. .
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