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Question 80Asked in RRB JE CBT-1, 19 Feb 2026, Shift 1 (9:00 AM)

Atomic masses of elements are compared with a standard reference. Carbon-12 was

Atomic masses of elements are compared with a standard reference. Carbon-12 was chosen as the standard for the atomic mass unit mainly because:
  1. ACarbon is present in very large amounts in nature
  2. BCarbon shows very little chemical reactivity with elements
  3. CCarbon-12 gives atomic masses close to whole numbers
  4. DCarbon is able to form a large number of compounds
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Correct answer: (C) Carbon-12 gives atomic masses close to whole numbers

From RRB JE CBT-1 PYQ 19 Feb 2026, Shift 1 (9:00 AM)

This is question 80 of RRB JE CBT-1 PYQ 19 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.