UPSC Civil Service Exam Questions - Engineering

Q1:

Consider the following statements :
In solid waste management
1. density separation of solid wastes can be accomplished by air classifiers.
2. iron recovery from solid wastes can be done by magnetic separators.
3. aluminium separation from solid wastes can be accomplished by eddy current separators. Which of the statements given above are correct ?

A 1 and 2

B 2 and 3

C 1 and 3

D 1, 2 and 3

ANS:A - 1 and 2

The correct option is D.

Aluminium & copper are non-ferrous materials and for the separation of this type, the eddy current method is used.