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प्रश्न
Define an acid and a base. Give two examples of each.
उत्तर
Acids: Substances that ionise on dissolving in water producing hydrogen ions (H+ions) are called acids. Acids are sour in taste and they turn blue litmus to red.
Examples: Hydrochloric acid, HCl, and sulphuric acid, H2SO4.
Bases: Substances that ionise on dissolving in water producing hydroxide ions (OH- ions) are called bases. Bases are bitter in taste, slippery to touch and they turn red litmus to blue.
Examples: Magnesium hydroxide, Mg(OH)2, and sodium hydroxide, NaOH.
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संबंधित प्रश्न
| Column A | Column B | ||
| i | eosin | 1 | losing hydrogen |
| ii | oxidation | 2 | synthetic indicator |
| 3 | losing oxygen | ||
| 4 | natural indicator |
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Zn (s) + HCI (aq) →
Complete and balance the followingchemicalequations:
NaHCO3 (S) + HCI (aq) →
Complete and balance the following chemical equations:
NaOH (aq) HCI (aq)→
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