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प्रश्न
Turmeric is a natural indicator. On adding its paste to acid and base separately, which colours would be observed
पर्याय
Yellow in both acid and base.
Yellow in acid and red in base.
Pink in acid and yellow in base.
Red in acid and blue in base.
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उत्तर
Yellow in acid and red in base
Explanation:
Turmeric paste is yellow in colour. So it remains yellow in acid and changes its colour to red in base.
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संबंधित प्रश्न
Name one natural source of the following acid:
Tartaric acid
Give the names and formulae of two strong bases.
What is the difference between an alkali and a metal hydroxide?
Which are the industrial uses of acids?
Give the name and formula of two : Weak dibasic acids
How is an acid prepared from a non metal and a base from a metal? Give equation.
An aqueous solution turns red litmus solution blue. Excess addition of which of the following solutions would reverse the change?
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 |
What are acids?
To Interpret:
CH4 and NH3, are not acids.
