Download App

Is Matter Around Us Pure ? — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceIs Matter Around Us Pure ?1 Mark
MCQ
Pure copper sulphate can be obtained form an impure sample by the process of:
  • A
    Evaporation.
  • B
    Fractional distillation.
  • C
    Centrifugation.
  • D
    Crystallization.
✓

Answer

  1. Crystallization.

Explanation:

Crystallization is the process of cooling a hot concentrated solution of a substance to obtain its crystals in pure form.

Need a full question paper?

Generate a complete, print-ready paper with questions like this in minutes — across 16+ boards, with answer keys.

Start Generating Free

Explore more

More "M.C.Q. [1 M]" from Is Matter Around Us Pure ?→Is Matter Around Us Pure ? — all question types→Science STD 9 question papers→Gujarat Board STD 9 question papers→Gujarat Board question paper generator→

Similar questions

Which of the following is not an emulsion?
→
A radar signal is reflected by an aeroplane and is received in 2 × 10-5s after it was sent. If the speed of these waves is 3 × 108m/ s, how far is the aeroplane?
→

When a car driver travelling at a speed of 10m/s applies brakes and brings the car to rest in 20s, then retardation will be:

  1. +2m/s2
  2. -2m/s2
  3. -0.5m/s2
  4. +0.5m/s2
→
Naphthalene can be separated for sand:
→
The number of cellular layers keeps on changing in:
→

A fielder pulls his hands backwards after catching the cricket ball. This enables the fielder to:

  1. Exert larger force on the ball.
  2. Reduce the force exerted by the ball.
  3. Increase the rate of change of momentum.
  4. Keep the ball in hands firmly.
→
The birds which are reared for eggs are called _______:
→

Lactation period is maximum in:

  1. Frieswal
  2. Sahiwal
  3. Holstein-Friesian.
  4. Karan-Swiss.
→
Which scientist proposed the concept of atomic mass:
→
The S.I. unit of energy is
→