English Medium Class 9 - CBSE Question Bank Solutions for Science

Describe the various steps involved in the separation of iodine, iron filings and salt from a mixture.

Describe the various steps involved in the separation of iodine, iron filings and salt from a mixture.

How will you separate a mixture of iron filings, chalk powder and common salt ?

How will you separate a mixture of iron filings, chalk powder and common salt ?

How will you separate water from mustard oil ?

How will you separate water from mustard oil ?

Describe a method for separating a mixture of iron filings and sulphur powder other than that by using a magnet.

Describe a method for separating a mixture of iron filings and sulphur powder other than that by using a magnet.

How is cream separated from milk ?

How is cream separated from milk ?

Explain how, impure copper sulphate can be purified by crystallisation.

Explain how, impure copper sulphate can be purified by crystallisation.

Which method is better for recovering sugar from sugar solution : evaporation or crystallisation ? Give reason
for your answer.

Which method is better for recovering sugar from sugar solution : evaporation or crystallisation ? Give reason
for your answer.

What is chromatography ? State its two applications.

What is chromatography ? State its two applications.

With the help of a labelled diagram, describe the method of separating ammonium chloride from a mixture of ammonium chloride and common salt. Mention the difference in the properties of ammonium chloride and sodium chloride which has made this separation possible.

With the help of a labelled diagram, describe the method of separating ammonium chloride from a mixture of ammonium chloride and common salt. Mention the difference in the properties of ammonium chloride and sodium chloride which has made this separation possible.

How can you obtain pure water from a salt-water mixture (or salt-solution) ? Draw a neat and labelled diagram of the apparatus you would use to obtain pure water from a salt-water mixture (or salt-solution).

How can you obtain pure water from a salt-water mixture (or salt-solution) ? Draw a neat and labelled diagram of the apparatus you would use to obtain pure water from a salt-water mixture (or salt-solution).