Paper 1 · People, Development and Environment
UGC NET December 2023 (08.12.2023) Shift-I
Given below are two statements. In the light of the above statements, choose the most appropriate answer from the options given below.
- Statement I: The total solids (dissolved and suspended) in a wastewater sample are the materials left after water has evaporated from the sample.
- Statement II: The dissolved solids fraction usually includes colloidal particles.
ABoth Statement I and Statement II are correct ✓ Correct
BBoth Statement I and Statement II are incorrect
CStatement I is correct but Statement II is incorrect
DStatement I is incorrect but Statement II is correct
Correct answer: (A) Both Statement I and Statement II are correct — Both statements are correct, so the answer is both Statement I and Statement II are correct.
Explanation
★Both statements are correct, so the answer is both Statement I and Statement II are correct.
★Total solids are what remains when all the water in a sample evaporates.
★This includes both dissolved and suspended matter, so Statement I is correct.
★The dissolved solids fraction contains very fine dispersed particles.
★These include colloidal particles held in the dispersion medium.
★So Statement II is also correct, making both true.
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