Sainik School Entrance Exam 2018 Solved Paper

Question : 83 of 150

Marks: +1, -0

Solution of which of the following oxides in water will change the colour of blue litmus to red?

Solution:

(a) Acidic oxides of non-metals turn the blue litmus paper to red whereas metallic oxides that are basic turn the red litmus to blue. So,

{\SO}2

being an acidic oxide of non metals turns blue litmus to red.

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