Download App

Is Matter Around Us Pure — Science STD 9 — Question

Gujarat BoardEnglish MediumSTD 9ScienceIs Matter Around Us Pure1 Mark
MCQ
How is scrap$-$iron separated from other wastes in a scrap yard:
  • A
    Sublimation
  • ✓
    Magnetic separation
  • C
    Handpicking
  • D
    Winnowing
✓

Answer

Correct option: B.
Magnetic separation
Waste materials supplied to factories contain a number of scrap metals including iron ore.
So, in factories, scrap iron is separated from the heap of waste materials by using big electromagnets fitted to a crane.

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 an acute disease?
→
Which of the following cannot be separated from air by the process of fractional distillation?
→
A bus is travelling the first one-third distance at a speed of $10\ km/h,$ the next one-fourth at $20\ km/h$ and the remaining at $40\ km/h$. What is the average speed of the bus?
→
At $20^\circ C,$ the minimum distance of a person from a sound reflecting surface to hear an echo is:
→

A sprinter is running along the circumference of a big sports stadium with constant speed Which of following do you think is changing in this case?

    →
    Which of the following has two chambered heart?
    →
    The ultrasound waves can penetrate into matter to a large extent because they have:
    →
    Which is not one of the laws of chemical combinations:
    →
    Water drops fall at regular intervals from a roof at of 125m from the ground. At an instant when 11th drop is about leave the roof and 1st drop is at a height of 45m from the ground at that instant the dist of 10th drop from the roof is (g=10 m/ s2)
    →
    A mixture of milk and ground oil can be separated by:
    →