Question

if we heat red (or) litmus paper does it turns into blue in test tube 2​

Answer 1

Answer:

Test tube A contains dilute HCl and test tube B contains dilute NaOH. On adding blue litmus solution to both the test tubes, the colour of test tube A will change from blue to red while the colour of test tube B will remain the same. This is because HCl is acid and acid turns blue litmus to red.

Explanation:

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