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The sulphurou...

Question

The sulphurous acid turns _ litmus paper to _.

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Solution

The sulphurous acid turns blue litmus paper to red.

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Q. Sulphurous acid turns _________ litmus paper __________.

Q. A neutral solution turns litmus paper from _____ to _______.

Q. Acids, acidic oxide and acidic salts :
(a) will turn red litmus blue
(b) will turn blue litmus red
(c) will turn pH paper orangish red
(d) will turn pH paper green

Q. A student placed a few drops of a liquid over a portion of the red litmus paper as shown here. He observed that the red litmus paper turned blue. The liquid could be :

(1) dilute hydrochloric acid
(2) dilute sodium hydroxide
(3) water
(4) dilute acetic acid

Q. Can we use the same blue litmus paper that turned into red when poured a drop of acid, again to obtain blue litmus paper again.

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Standard VIII Chemistry

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