Page 124 - Chemistry ICSE Class X
P. 124
110 ICSE Chemistry – 10
Q 9. Identify the cations in each of the following case: [ICSE 2016]
(i) NaOH solution when added to the Solution (A) gives a reddish brown precipitate.
(ii) NH OH solution when added to the Solution (B) gives white ppt. which does not dissolve in excess.
4
(iii) NaOH solution when added to Solution (C) gives white ppt. which is insoluble in excess.
Q 10. Fill in the blank with the choices given in brackets. [ICSE 2016]
__________ (AgCl/PbCl ), a white precipitate is soluble in excess NH OH.
2
4
Q 11. State your observations when ammonium hydroxide solution is added drop by drop and then in excess to each
of the following solutions : [ICSE 2016]
(i) copper sulphate solution (ii) zinc sulphate solution
Q 12. Choose the correct answer from the options given below:
(i) A chloride which forms a precipitate that is soluble in excess of ammonium hydroxide, is: [ICSE 2017]
(1) Calcium chloride
(2) Ferrous chloride
(3) Ferric chloride
(4) Copper chloride
Q 13. Identify the cation that does not form a precipitate with ammonium hydroxide but forms one with sodium
hydroxide. [ICSE 2017]
Q 14. Answer the following questions: [ICSE 2017]
(i) How will you distinguish between ammonium hydroxide and sodium hydroxide using copper sulphate
solution?
(ii) How will you distinguish between dilute hydrochloric acid and dilute sulphuric acid using lead nitrate
solution ?
Q 15. Identify the salts P and Q from the observations given below: [ICSE 2017]
K 1P RGTHQTOKPI VJG ƀCOG VGUV UCNV 2 RTQFWEGU C NKNCE EQNQWTGF ƀCOG CPF KVU UQNWVKQP IKXGU C YJKVG RTGEKRKVCVG
with silver nitrate solution, which is soluble in Ammonium hydroxide solution.
(ii) When dilute HCl is added to a salt Q, a brisk effervescence is produced and the gas turns lime water milky.
When NH OH solution is added to the above mixture (after adding dilute HCl), it produces a white
4
precipitate which is soluble in excess NH OH solution.
4
Q 16. Choose the correct answer from the options given below: [ICSE 2018]
The salt solution which does not react with ammonium hydroxide is:
(A) Calcium Nitrate (B) Zinc Nitrate
(C) Lead Nitrate (D) Copper Nitrate
Q 17. Write a balanced chemical equation for the following: [ICSE 2018]
(i) Reaction of sodium hydroxide solution with iron (III) chloride solution.
(ii) Reaction of zinc with potassium hydroxide solution.
Q 18. State one relevant observation for the following: [ICSE 2018]
Lead nitrate solution is treated with sodium hydroxide solution drop wise till it is in excess.
Q 19. Give a chemical test to distinguish between the following pair of chemicals: [ICSE 2018]
Lead nitrate solution and Zinc nitrate solution.
