Question

18. Read the following and answer any four questions from 18(i) to 18(v).
Acetic acid was added to a solid 'X' taken in a test tube. A colourless and odourless gas was
evolved. The gas was passed through lime water which turned milky. Thistle funnel Colourless
and odourless gas Acetic acid Test tube Delivery tube Test tube Limewater (Calcium hydroxide
solution) Solid 'X' Cork Stand.
Thistle funnel
Stand
Cork
Delivery tube
Test tube
Colourless and
Odourless gas
Acetic acid
Test tube
Calcium
hydroxide
Solid X solution
(i) The solid 'X' is
(a) sodium hydroxide
(c) sodium acetate
(b) sodium bicarbonate
(d) sodium chloride.
(ii) The gas evolved is
(a) CO2
(b) SO
(c) C12
(d) H2
(iii) When evolved gas is passed through lime water, it turns milky due to formation of
(a) calcium hydroxide
(b) calcium bicarbonate
(c) calcium oxide
(d) calcium carbonate.
(iv) When excess of carbon dioxide gas is passed through lime water, milkiness disappear due to
formation of
(a) CaCl2
(b) CaCO3
(c) Ca(HCO3)2 (d) NaHCO
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(v) The evolved gas is also produced when metal carbonates react with
(a) magnesium oxide
(b) sodium hydroxide
(c) hydrogen chloride
(d) zinc sulphate
IN-18).
The​

Answer 1

Answer:

the gas is carbon dioxide is evolved

sodium hydroxide

calcuim carbonate

cahco32

sodium hydroxide

Answer 2

Answer:

the x solid is sodium bicarbonate and the evolved gas is co2 and mikiness dissapear due to formation of( cahco3)2 and v) is b