Page 271 - Chemistry ICSE Class X
P. 271
Study of Compounds–Sulphuric Acid 257
15. You are given two samples. One of which is dilute hydrochloric acid and the other one is dilute sulphuric acid.
How will you identify the two samples?
16. Copy and complete the following table:
Column 1 Column 2 Column 3
Substance reacted with acid Dilute or concentrated acid Gas
Hydrogen
Carbon dioxide
Chlorine
17. Give a test of sulphuric acid, where an insoluble white precipitate is formed.
18. Tick (9) the correct answer.
(i) Sulphuric acid is also known as
(a) oil of blue vitriol
(b) oil of wintergreen
(c) oil of green vitriol
(d) none of these
(ii) Sulphur trioxide when dissolved in conc. sulphuric acid gives
(a) persulphuric acid
(b) thiosulphuric acid
(c) oleum
(d) sulphurous acid
(iii) Dilute sulphuric acid turns
(a) red litmus blue
(b) blue litmus red
(c) red litmus green
(d) green litmus red
(iv) Metals, such as copper, lead, mercury and silver, react with only
(a) oleum
(b) cold conc. sulphuric acid
(c) dilute sulphuric acid
(d) hot conc. sulphuric acid
(v) Sulphuric acid is a
(a) strong and monobasic acid
(b) weak and monobasic acid
(c) strong and dibasic acid
(d) weak and dibasic acid
(vi) The compound that is added to dilute sulphuric acid to give white precipitate is
(a) sodium acetate
(b) barium chloride
(c) sodium sulphate
(d) barium sulphate
ŶƐǁĞƌƐ
(i) (c) (ii) (c) (iii) (b) (iv) (d) (v) (c) (vi) (b)
