MEDIUM
10th CBSE
IMPORTANT
Earn 100

An aqueous solution of zinc sulphate was taken in four test tubes. Zinc, iron, copper and aluminium pieces were dropped into separate test tubes as given below :

Question Image

A reaction will be observed in test tube(s).

50% studentsanswered this correctly

Important Questions on Practical Chemistry

EASY
10th CBSE
IMPORTANT
Foundation Course Chemistry>Chapter 10 - Practical Chemistry>EXERCISE>Q 35
A colourless, odourless, neutral gas which supports combustion but is not combustible is 
EASY
10th CBSE
IMPORTANT
Foundation Course Chemistry>Chapter 10 - Practical Chemistry>EXERCISE>Q 36
A salt which gives blue precipitate with sodium hydroxide is 
MEDIUM
10th CBSE
IMPORTANT
Foundation Course Chemistry>Chapter 10 - Practical Chemistry>EXERCISE>Q 37
A student is testing water to know which is best for cleansing purposes with soaps. He would find that the cleansing action of soaps is best when he uses water obtained from 
MEDIUM
10th CBSE
IMPORTANT
Foundation Course Chemistry>Chapter 10 - Practical Chemistry>EXERCISE>Q 38
A salt which gives reddish brown precipitate with ammonioum hydroxide is 
MEDIUM
10th CBSE
IMPORTANT
Foundation Course Chemistry>Chapter 10 - Practical Chemistry>EXERCISE>Q 39
Gas involved by the addition of dil.HCl on sodium sulphite is 
MEDIUM
10th CBSE
IMPORTANT
Foundation Course Chemistry>Chapter 10 - Practical Chemistry>EXERCISE>Q 40
Absolute alcohol cannot be obtained by simple fractionation of solution of ethanol and water because
MEDIUM
10th CBSE
IMPORTANT
Foundation Course Chemistry>Chapter 10 - Practical Chemistry>EXERCISE>Q 41
A colourless acidic gas is emitted when the salt is treated with dil. HCl from which of the following salts?
EASY
10th CBSE
IMPORTANT
Foundation Course Chemistry>Chapter 10 - Practical Chemistry>EXERCISE>Q 42
Iron nails were dipped in an aqueous solution of copper sulphate. After about 30 minutes, it was observed that the colour of the solution changes from