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Why should curd and sour substances not ...

Why should curd and sour substances not be kept in brass and copper vessels?

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Curd and other sour substances contain acids which can react with the metals of brass and copper vessels to form toxic (poisonous) metal compounds which can cause food poisoning and damage our health.
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LAKHMIR SINGH & MANJIT KAUR-ACID, BASES AND SALTS-Exercise
  1. How many molecules of water of crystallisation (per formula unit) are ...

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  2. You have been provided with three test tubes. One of them contains dis...

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  3. Why should curd and sour substances not be kept in brass and copper ve...

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  4. Which gas is usually liberated when an acid reacts with a metal? Illus...

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  5. Metal compound A reacts with dilute hydrochloric acid to produce effer...

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  6. Why do HCl, HNO(3), etc., show acidic characters in aqueous solutions ...

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  7. Why does an aqueous solution of an acid conduct electricity?

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  8. Why does dry HCl gas not change the colour of the dry litmus paper?

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  9. While diluting an acid, why is it recommended that the acid should be ...

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  10. How is the concentration of hydronium ions (H(3)O^(+)) affected when a...

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  11. How is the concentration of hydroxide ions (OH^(–)) affected when ex...

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  12. You have two solutions, A and B. The pH of solution A is 6 and pH of s...

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  13. What effect does the concentration of H^(+)(aq) ions have on the natur...

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  14. Do basic solutions also have H^(+)(aq) ions? If yes, then why are thes...

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  15. Under what soil conditions do you think a farmer would treat the soil ...

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  16. What is the common name of the compound CaOCl(2)?

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  17. Name the substance which on treatment with chlorine yields bleaching p...

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  18. Name the sodium compound which is used for softening hard water.

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  19. What will happen if a solution of sodium hydrocarbonate is heated? Giv...

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  20. Write an equation to show the reaction between Plaster of Paris and wa...

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