M07
Topics from the actual 15.12.2018 paper dropped by the 2025 syllabus revision: engineering maths, drawing, TQM, materials, ethics
This head is not in the current (2025) syllabus — it holds material from the actual 15.12.2018 paper, kept because practising the real previous paper is the point.
UPSC publishes no per-head weightage for this test, so none is invented here. Question counts are read from the live bank when this page is built.
Every served question is explained like this — including why each wrong option is wrong.
'It is better for a city to be governed by a good man than by good laws.' Who said this?
Why B is correct
The dictum comparing rule by a good man with rule by good laws comes from Aristotle's Politics (Book III), where he weighs the rule of the best man against the rule of law.
A 305 mm long copper piece is pulled in tension with a stress of 276 MPa, with modulus of elasticity E of 110 GPa. If the deformation is entirely elastic, the resultant elongation will be:
Why D is correct
Hooke's law: δ = σL/E = (276 MPa × 305 mm)/(110,000 MPa) = 84,180/110,000 = 0.765 ≈ 0.77 mm.
A diagonal scale of RF = 1/250 is constructed to read up to 1 km and to read metres on it. The length of the scale will be:
Why D is correct
Length of scale = RF × maximum length to be measured = (1/250) × 1 km = (1/250) × 100000 cm = 400 cm.
59 questions · +2.5/−⅓ UPSC marking · explanations after every answer. No sign-up needed.