GATE AG 2022 • Q41 MCQ • 2 Marks

Section 4: Soil and Water Conservation Engineering

Soil Mechanics

Subtopic: Engineering properties of soils

Question Statement:

A sample of 90% saturated clay soil has void ratio and specific gravity of 0.8 and 2.7, respectively. The bulk unit weight of soil in N m⁻³ is ____________. (Take unit weight of water = 9.81×10³ N m⁻³)

Options:

  • (A) 10594.80
  • (B) 18639.00
  • (C) 18.64
  • (D) 10.60

Official Answer Key:

B

Step-by-Step Solution & Explanation

• Bulk unit weight γ = [(Gs + S·e)/(1+e)] × γw • = [(2.7 + 0.9×0.8)/(1+0.8)] × 9810 = [3.42/1.8] × 9810 = 1.9 × 9810 = 18,639 N/m³

Practice This in Real CBT Exam Interface

Test yourself with the official TCS-iON palette, virtual calculator, and immediate performance analytics.

Launch CBT Mock Test