Civil Engineering MCQAE Level Civil Engineering
For M20 nominal mix concrete, the recommended mix proportion (cement:sand:coarse aggregate by volume) is:
RCCNominal Mix ConcreteMEDIUM
Choose the correct answer
A
1:1.5:3
B
1:2:4
C
1:3:6
D
1:2.5:5
Correct Answer
A. 1:1.5:3
AI Detailed Explanation & IS Code Reference
Unlock the reasoning, formula path and code-linked notes inside your student dashboard.
IS 456:2000 Table 9 (Nominal Mixes): M20 = 1:1.5:3 (cement:fine aggregate:coarse aggregate by volume), M15 = 1:2:4, M10 = 1:3:6, M25 = 1:1:2.
ScoreCardAI links this solution with subject, topic and difficulty signals so your scorecard can identify weak areas after a full mock test.
Concept shortcut
IS/IRC reference
Common trap
Practice more Civil Engineering questions
This MCQ belongs to AE Level Premium Test Series. Full tests include timed attempts, rank comparison and subject-wise analysis.