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प्रश्न
State the inference drawn from the following observation:
A gas Q turns moist lead acetate paper silvery black. Identify the gas Q.
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उत्तर
The gas is H2S.
संबंधित प्रश्न
Define normal salt.
Define a mixed salt.
Give two examples of an acid salt.
Name an acidic salt.
Give the name and formula of the acid salt which gives sodium ions and sulphate ions in solution.
Macth the following.
| Column A | Column B |
| 1. Acid salt | a. Sodium potassium carbonate |
| 2. Mixed salt | b. Alum |
| 3. Complex salt | c. Sodium Carbonate |
| 4. Double salt | d. Sodium zincate |
|
5. Normal salt |
e. Sodium hydrogen carbonate |
Define the following and give two examples in case a basic salt.
From the formula listed below, choose one, in the following case, corresponding to the salt having the given description:
AgCl, CuCO3, CuSO4.5H2O, KNO3, NaCl, NaHSO4, Pb(NO3)2, ZnCO3, ZnSO4.7H2O.
An acid salt.
Why is toothpaste basic?
From the formula listed below, choose one, in the following case, corresponding to the salt having the given description:
AgCl, CuCO3, CuSO4.5H2O, KNO3, NaCl, NaHSO4, Pb(NO3)2, ZnCO3, ZnSO4.7H2O.
On heating, this salt changes from green to black.
