Advertisements
Advertisements
प्रश्न
Match the acids given in column (A) with their correct source given in column (B)
| Column (A) | Column (B) |
| (a) Lactic acid | Tamarind |
| (b) Acetic acid | Lemon |
| (c) Citric acid | Vinegar |
| (d) Tartaric acid | Curd |
Advertisements
उत्तर
| Column (A) | Answers |
| (a) Lactic acid | Curd |
| (b) Acetic acid | Vinegar |
| (c) Citric acid | Lemon |
| (d) Tartaric acid | Tamarind |
APPEARS IN
संबंधित प्रश्न
How will you test for the gas which is liberated when hydrochloric acid reacts with an active metal?
Give the names and formulae of two strong acids.
Name one animal whose stings contain formic acid (or methanoic acid).
One of the following is a medicine for indigestion. This is:
Bee sting contains ______.
One of the following does not inject an acidic liquid into the skin through its sting. This is:
The salt which will give a neutral solution on dissolving in water will be ______.
Explian the following:
Dil. HCl acid is stronger than highly concentrated acetic acid.
Write balanced equation to satisfy the following statement:
\[\ce{Acid + sulphide -> Salt + Hydrogen sulphide}\]
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:
- magnesium powder,
- powdered zinc metal?
Give a word equation for each reaction.
State one observation for each of the following :
A small piece of zinc is added to dilute hydrochloric acid
How is an acid prepared from a non metal and a base from a metal? Give equation.
Vinu and Priyan take their lunch at school. Vinu eats lemon rice and Priyan eats curd rice. Both lemon rice and curd rice are sour in taste. What is the reason?
The correct way of making a solution of acid in water is to ______.
State whether the following statement is true or false. Correct the false statement.
All substances are either acidic or basic.
Paheli observed that most of the fish in the pond of her village were gradually dying. She also observed that the waste of a factory in their village is flowing into the pond which probably caused the fish to die.
- Explain why the fish were dying.
- If the factory waste is acidic in nature, how can it be neutralised?
Write the important uses of hydrochloric acid and sulphuric acids.
______ acids have a relatively smaller amount of acids dissolved in a solvent.
Acidic or basic solutions are good conductors of electricity. Justify your answer.
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 |
