Question

Fill in the blank spaces.
(i) Lead does not react with dilute
sulphuric acid on account of the
formation of
layer of
lead sulphate on its surface.
(soluble/insoluble]
(ii) Burning magnessium reacts with
steam to form
and
hydrogen gas.
[magnesium hydroxide/
magnesium oxide.]
(iii)
metal is used as
catalyst during the hydrogenation of
vegetable oils. [chromium/nickel]​

Answer 1

Answer:

(1) soluble

(2) magnesium hydroxide

(3) Chromium

Answer 2

Answer:

soluble

magnesium hydroxide

chromium