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प्रश्न
State one observation for each of the following :
A small piece of zinc is added to dilute hydrochloric acid
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उत्तर
Bubbles of H2 gas observed.
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संबंधित प्रश्न
Name one animal and one plant whose stings contain formic acid (or methanoic acid).
What colour does the turmeric paper turn when put in an alkaline solution?
Which gas is usually liberated when an acid reacts with a metal?
Write balanced equation to satisfy the following statement:
\[\ce{Acid + Carbonate or bicarbonate -> Salt + water + Carbon dioxide}\]
If iron reacts with dilute sulphuric acid, what will be the products?
Classify the various types of Acids based on their sources.
The correct way of making a solution of acid in water is to ______.
Match the substances in Column I with those in Column II.
| Column 1 | Column II | ||
| (a) | Tartaric acid | (i) | soap |
| (b) | Calcium hydroxide | (ii) | curd |
| (c) | Formic acid | (iii) | unripe mangoes |
| (d) | Sodium hydroxide | (iv) | ant’s sting |
| (e) | Lactic acid | (v) | lime water |
Match the following:
| 1. | The hardest substance in our body | a. | Aluminum phosphate |
| 2. | Citrus fruits | b. | Potash alum |
| 3. | Rice plant | c. | Insoluble in water |
| 4. | Double salts | d. | Acidic soil |
| 5. | Silver chloride | e. | Calcium phosphate |
| f. | Alkaline soil |
You are supplied with five solutions: A, B, C, D and E with pH values as follows: A = 1.8, B = 7, C = 8.5, D = 13, and E = 5
Classify these solutions as neutral, slightly or strongly acidic and slightly or strongly alkaline.
Which solution would be most likely to liberate hydrogen with powdered zinc metal. Give a word equation for each reaction.
