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- How is sodium hexametaphosphate useful in removing the permanent hardn...
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- Suggest a disadvantage of hard water.
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- Hard water contains calcium and magnesium salts. Therefore it does not...
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- How will you remove the hardness from the water by using washing soda?
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- WhIch method is more suitable to get pure demineralised water?
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- Hydrogen peroxide is stored in plastic vessels in dark why?
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- What is coal gasification?
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- About 18% of the total production of dihydrogen is from coal. How is d...
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- Write any two uses of dihydrogen.
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- Water is an amphoteric substance. Justify
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- Hydrides are binary compounds of hydrogen with other elements. Give on...
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- H2O2 is a bleaching agtent. Why?
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- Complete the following reaction. (Zn(s) + NaOH(aq) rarr^(heat) ………………....
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- In a seminar, if you are asked to present a paper on hydrogen economy,...
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- Syn gas' is a mixture of .....
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- A sample of river water does not give lather with soap easily when it ...
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- Draw the structure of a hydrogen peroxide molecule.
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- Hydrogen reacts with most of the metals and non metals to form hydride...
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- Hydrogen peroxide restore the colour of lead paintings. Give a reason.
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- How does the atomic hydrogen torch function for cutting and welding pu...
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