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प्रश्न
How will you identify?
An amphoteric hydroxide
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उत्तर
Zinc hydroxide is an amphoteric hydroxide. It can be identified by treating the salt solution with sodium hydroxide, if a white ppt. is formed and if it gets dissolved in excess of sodium hydroxide then it may be zinc hydroxide.
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संबंधित प्रश्न
Complete the following by selecting the correct option from the choices given:
The metal which does not react with water or dilute H2SO4 but reacts with concentrated H2SO4 is _________. (Al/Cu/Zn/Fe)
Dry hydrogen chloride gas can be collected by ______ displacement of air.
Write an equation for the reaction of hydrochloric acid on caustic soda solution.
Write an equation for the reaction of hydrochloric acid on copper oxide.
How will the action of dilute hydrochloric acid enable you to distinguish between sodium carbonate and sodium sulphite?
Name the following:
Salt obtained by heating sodium chloride with concentrated sulphuric acid below 200 degree celcius.
What is the function of HCI in preparation of aqua-regia?
Match the following:
| Column A | Column B |
| 1. A substance that turns moist starch iodide paper blue. | A. Ammonium sulphate |
| 2. A compound which release a reddish brown gas on reaction with concentrated sulphuric acid and copper turnings. | B. Lead carbonate |
| 3. A solution of this compound gives dirty green precipitate with sodium hydroxide. | C. Chlorine |
| 4. A compound which on heating with sodium hydroxide produces a gas which forms dense white fumes with hydrogen chloride. | D. Copper nitrate |
| 5. A white solid which gives a yellow residue on heating | E. Ferrous sulphate |
Write the balanced equation for the reaction of dilute hydrochloric acid with the following:
Magnesium sulphite
Study the flow chart and give balanced equations with conditions for the conversions A, B, C, D, and E.
