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प्रश्न
Sodium carbonate is a basic salt because it is a salt of
विकल्प
strong acid and strong base
weak acid and weak base
strong acid and weak base
weak acid and strong base
उत्तर
weak acid and strong base
Explanation -
Na2CO3 is a salt of weak acid (H2CO3) and strong base (NaOH).
APPEARS IN
संबंधित प्रश्न
Write any four physical properties of base.
Alkalis are ____________.
Assertion: Ammonium hydroxide is a weak base.
Reason: Phenolphthalein becomes pink in NH2OH.
Sodium hydrogencarbonate when added to acetic acid evolves a gas. Which of the following statements are true about the gas evolved?
- It turns lime water milky
- It extinguishes a burning splinter
- It dissolves in a solution of sodium hydroxide
- It has a pungent odour
When zinc metal is treated with a dilute solution of a strong acid, a gas is evolved which is utilised in the hydrogenation of oils. Name the gas evolved. Write the chemical equation of the reaction involved and also write a test to detect the gas formed.
Match the following:
| 1. | Sodium chloride | a. | Detergents |
| 2. | Sodium carbonate | b. | Purification of water |
| 3. | Sodium bicarbonate | c. | Taste to food |
| 4. | Potash alum | d. | Antacids |
Assertion: A salt is produced when an acid is neutralized by a base.
Reason: A salt can be acidic, basic, or neutral.
Write the chemical equation for the reaction of bases with metal oxides.
What is Potash alum? Write its formula.
Write notes on the properties of bases.
