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प्रश्न
Salts A, B, C, D and E undergo reactions (i) to (v) respectively. Identify the anion present in these salts on the basis of these reactions.
- When silver nitrate solution is added to a solution of A, a white precipitate, insoluble in dilute nitric acid, is formed.
- The addition of dilute hydrochloric acid to B produces a gas which turns lead acetate black on paper.
- When a freshly prepared solution of ferrous sulphate is added to a solution of C and concentrated sulphuric acid is gently poured from the side of the test tube, a brown ring is formed.
- When dilute sulphuric acid is added to D, a gas is produced which turns acidified potassium dichromate solution from orange to green.
- The addition of dilute hydrochloric acid to E produces effervescence. The gas produced turns lime water milky but does not affect acidified potassium dichromate solution.
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उत्तर
| Salt | Anion |
| A | Chloride (Cl−) |
| B | Sulphide (S2−) |
| C | Nitrate \[\ce{(NO^-3)}\] |
| D | Sulphite \[\ce{(SO^{2−}3)}\] |
| E | Carbonate \[\ce{(CO^{2-}3)}\] |
संबंधित प्रश्न
Identify the substance underlined, in the following case
A solid formed by reaction of two gases, one of which is acidic and the other basic in nature
P and Q are aqueous solutions of sodium chloride and sodium hydroxide, respectively. Which of these will turn:
red litmus blue?
name two salts which are neutral, when dissolved in water.
The pH values of three solutions A, B and C are given in the table. Answer the folloiwng questions:
| Solution | pH value |
| A | 12 |
| B | 2 |
| C | 7 |
Which solution will liberate CO2 when reacted with sodium carbonate?
Name two carbonates which do not produce carbon dioxide on heating.
Name a colourless gas which bleaches.
Distinguish by a chemical test sodium hydroxide solution and ammonium hydroxide solution.
Identify the following substance:
Gas C has an offensive smell like rotten eggs.
An aqueous solution of a salt turns blue litmus to red. The salt could be the one obtained by the reaction of ______.
You are provided with the list of chemicals mentioned below in the box:
| Sodium hydroxide solution, copper carbonate, zinc, hydrochloric acid, copper, dilute sulphuric acid, chlorine, iron |
Using suitable chemicals from the list given, write a balanced chemical equation for the preparation of the salt mentioned below:
Copper sulphate
