Question

1 point
3. Concentrated 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 in the color
of litmus paper because: *
O The litmus paper used is dry
O The litmus paper used is moist
O
Blue litmus paper does not change
its color with an acid
O
The litmus paper is kept very close
to the mouth of the delivery tube
O Other:​

Answer 1

Answer:

A

Explanation:

Because hcl gas is not acidic and it will form acid only after reacting with h2o which is absent in dry litmus paper

Answer 2

Answer:

identify the produce of the following react caco3 + 2 h c i mine Arrow dash + 10 + dash