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Given below are observations reported by four students, I,II, III and IV for the changes observed with dilute HCl or dilute NaOH and different materials.
Material Dil. HCl Dil.NaOH
I) Moist Litmus Paper Blue to Red Red to Blue
II) Zinc Metal React at room temperature Does not react at room temperature
III) On heating Liquid becomes milky Remains clear and transparent
IV) Solid sodium bicarbonate No reaction Brick effervescence
The incorrectly reported observation is :

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II, III

III, IV

I, II, III, IV

I, II

answer is D.

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Detailed Solution

Because on heating , dil.HCl will react with ${NaHCO}_{3}$ .

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