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GATE 2024 CE (CE1) – Question 21

Air Pollution and Municipal Solid Wastes · Municipal solid wastes: generation, collection, transportation and management · 1 mark · Multiple choice

The following table gives various components of Municipal Solid Waste (MSW) and a list of treatment/separation techniques.

Component of MSWTreatment/separation technique
P - Ferrous metalsi - Incineration
Q - Aluminum and copperii - Rapid composting
R - Food wasteiii - Eddy current separator
S - Cardboardiv - Magnetic separator

The CORRECT match is

  1. P-iii, Q-iv, R-i, S-ii
  2. P-iv, Q-iii, R-ii, S-i
  3. P-iii, Q-iv, R-ii, S-i
  4. P-iv, Q-iii, R-i, S-ii

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Show answer and explanation

Correct answer: (B) P-iv, Q-iii, R-ii, S-i

Explanation

Ferrous metals are picked out with a magnetic separator (iv). Non-ferrous conductors such as aluminium and copper are separated with an eddy current separator (iii). Food waste is biodegradable and suits rapid composting (ii). Cardboard is combustible and can be incinerated (i). So P-iv, Q-iii, R-ii, S-i.