SECTION-D
34. Match the pH value 1, 6, 10, 11 to the solutions given below.
Aqueous sodium bicarbonate, Dil. HNO3, Antacid, Lemon juice.
Ritu wanted to bleach cotton. So she used a powder to bleach it. Which powder she has
used it? Write its preparation and uses.
OR
Four samples A, B, C, and D change the colour of pH paper or solution to violet, green, orange,
and pink. Their pH was recorded as 13, 11, 5, 1. Which of the samples has the highest amount
of hydrogen ion concentration? Arrange the four samples in the decreasing order of their pH.
Preparation of sodium hydroxide is also called chlor-alkali process, why?
Also write the preparation of reaction of sodium hydroxide. Mention three uses of sodium
hydroxide.
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