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Question 83Asked in RRB JE CBT-1, 20 Feb 2026, Shift 1 (9:00 AM)

Why are non-biodegradable substances harmful for the environment?

  1. ACan be broken down by bacteria
  2. BNeeds heat and temperature for breakdown, releases harmful chemicals
  3. CCauses no pollution in water
  4. DEasily mixes with soil
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Correct answer: (B) Needs heat and temperature for breakdown, releases harmful chemicals

From RRB JE CBT-1 PYQ 20 Feb 2026, Shift 1 (9:00 AM)

This is question 83 of RRB JE CBT-1 PYQ 20 Feb 2026, Shift 1 (9:00 AM). See all questions of this paper with answers, or attempt the paper as a timed online test to get your score and all-India rank.