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A student placed a pinch of solid sodium hydrogencarbonate on a strip of red litmus paper. He found that the colour of red litmus paper strip :
(1)turned green (2)turned blue
(3)turned violet (4)did not change
"

Correct answer: (4) did not change

Explanation: Solid sodium hydrogencarbonate does not (H⁺ or OH^- ions) changes the colour of litmus paper. As there is no presence of ions, hence the colour of the litmus paper does not change.

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Updated on: 10-Oct-2022

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(1)turned green	(2)turned blue
(3)turned violet	(4)did not change

A student placed a pinch of solid sodium hydrogencarbonate on a strip of red litmus paper. He found that the colour of red litmus paper strip :(1)turned green (2)turned blue(3)turned violet(4)did not change"

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A student placed a pinch of solid sodium hydrogencarbonate on a strip of red litmus paper. He found that the colour of red litmus paper strip :
(1)turned green (2)turned blue
(3)turned violet (4)did not change
"