Question

The figure given below represents the experiment carried out between conc. sulphuric acid and sodium chloride, which react with each other to form HCl gas. Blue litmus paper is brought near the mouth of the delivery tube to check the presence of HCl acid but no change is observed , change can be observed if : 1 point Captionless Image The litmus paper used is red The litmus paper used is moist If the gas is passed through CaCl2 before passing it through litmus paper The litmus paper is kept very close to the mouth of the delivery tube​

Answer 1

Answer:

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