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प्रश्न
Which of the following set of substances contain acids?
विकल्प
Grapes, lime water
Vinegar, soap
Curd, milk of magnesia
Curd, vinegar
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उत्तर
Curd, vinegar
Explanation:
Curd and vinegar contain lactic acid and acetic acid respectively.
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संबंधित प्रश्न
What is the common name of water soluble bases?
Which acid is produced in our stomach? What happens if there is an excess of acid in the stomach? How can its effect be cured?
What effect does the concentration of H+ (aq) ions have on the nature of a solution?
One of the following is a medicine for indigestion. This is:
(a) sodium hydroxide
(b) manganese hydroxide
(c) magnesium hydroxide
(d) potassium hydroxide
Bee sting contains:
(a) an acidic liquid
(b) a salt solution
(c) an alkaline liquid
(d) an alcohol
Give one example in the following case:
A hydrogen containing compound which is not an acid.
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. Give a word equation for each reaction.
Match the pairs.
| Group A | Group B |
| 1. Tamarind | a. Acetic acid |
| 2. Curd | b. Citric acid |
| 3. Lemon | c. Tartaric acid |
| 4. Vinegar | d. Lactic acid |
Define an acid.
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 |
