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प्रश्न
Name a white, insoluble oxide that dissolves when fused with caustic soda or caustic potash.
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उत्तर
Al oxide
संबंधित प्रश्न
Name:
a compound containing zinc in the anion
What do you understand by the following:
Qualitative analysis
State what do you observe when:
Sulphur burns.
Write the observation, and balanced equation for the following reaction:
A paper dipped in potassium permanganate solution is placed at the mouth of a test tube, containing sulphur dioxide gas.
Match the following :
| Column A | Column B |
| 1. A substance that turns moist starch iodide paper blue. |
A. Ammonium sulphate |
| 2. A compound which releases a reddish brown gas on reaction with concentrated sulphuric acid and copper turnings. |
B. Lead carbonate |
| 3 . A solu tion of this compound gives a dirty green preci pi ta te 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 |
Identify the substance P based on the information given below:
The deliquescent salt P, turns yellow on dissolving in water, and gives a reddish brown precipitate with sodium hydroxide solution.
Fill in the blank.
Potassium sulphite on reacting with hydrochloric acid releases ________
Write balanced equation :
Copper sulphate solution with ammonium hydroxide solution.
Write balanced equations for a metal that evolves into a gas which burns with a pop sound when boiled with alkali solutions.
Write balanced equations for a metal that evolves a gas which burns with a pop sound when boiled with alkali solutions.
