MEDIUM
9th CBSE
IMPORTANT
Earn 100
A student heats calculated amounts of iron filings and sulphur powder together in a boiling tube. He will obtain
9.76% studentsanswered this correctly
Important Questions on Multiple Choice Questions (MCQs) (Based on Practical Skills in Science)
MEDIUM
9th CBSE
IMPORTANT
Which of the following mixture can be separated completely by the process of sublimation?
HARD
9th CBSE
IMPORTANT
Four set-ups as given here were arranged to identify the gas evolved when dilute sulphuric acid was added to zinc granules. The most appropriate set up is
EASY
9th CBSE
IMPORTANT
An iron nail was dropped into copper sulphate solution. After some time, the colour of the solution changed from
MEDIUM
9th CBSE
IMPORTANT
A student was asked by her science teacher to prepare a true solution. She dissolved the solute in water but forgot to record its name. What may be the correct name of the solute?
MEDIUM
9th CBSE
IMPORTANT
A student placed a clean iron nail in blue coloured copper sulphate solution for a considerable time. He observes that :
MEDIUM
9th CBSE
IMPORTANT
When a student added a few drops of barium chloride solution to sodium sulphate solution, he obtained a white precipitate instantly. Which of the following type of chemical reaction has been carried out by the student?
MEDIUM
9th CBSE
IMPORTANT
A student was asked to carry out a chemical reaction by placing four different metal strips in solution for a considerable time, one by one. Which of the following metal strip will turn the blue solution to a light green solution in due course of time?
HARD
9th CBSE
IMPORTANT
We can show that iron is more reactive than copper:
