Chemistry
Grade-10
Easy
Question
The correct statement among the following is
- Sodium hydroxide can be also obtained by the decomposition of calcium bicarbonate.
- In textile industries sodium hydroxide is used for the mercerizing silk fabrics.
- Bleaching powder is formed in the Bachmann plant due to the counter current mechanism.
- Bleaching powder is used for dying purpose due to the presence of nascent hydrogen atom.
Hint:
Bleaching powder is formed in the Bachmann plant.
The correct answer is: Bleaching powder is formed in the Bachmann plant due to the counter current mechanism.
- When electric current is passed through an aqueous solution sodium chloride, it decomposes to form sodium hydroxide and chlorine.
- In textile industry caustic soda along with other chemicals is used for mercerizing silks.
- Bleaching powder is formed in the Bachmann plant due to counter current mechanism.
- Bleaching powder is strong oxidising agent, removes the color of various substances.
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