Geology & Hydrology MCQs Test Series Part 3

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Geology MCQ & Hydrology MCQ Part 3

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Which of the following is not an intrusive igneous rock?




ANSWER= [D] basalt

basalt is not an intrusive igneous rock.

Which of the following is a significant constituent of sedimentary rock?




ANSWER = [C] calcite

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calcite is a significant constituent of sedimentary rock.

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Most of the stones possess the specific gravity in the range of




ANSWER = [C] 2.4 to 2.8

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At the base of a mountain, a mercury barometer reads 700 mm whereas at the top it reads 500 mm of Mercury. The density of air is 1.23 kg/m3, which is assumed constant, Determine the height of the mountain.




ANSWER= [B] 2211 m

Difference in mercury level between top & bottom = 700 – 500 = 200 mm

For calculating the height of the mountain,

Pressure difference due to air = Pressure difference due to mercury

1.23 × 9.81 × h = 13.6 × 1000 × 9.81 × 200 × 10-3

Height of mountain (h) = 13.6 × 1000 × 200 × 10-3 / 1.23

Height of mountain (h) = 2211.38 m

A sample of dry soil weighs 68 grams. Find the volume of voids if the total volume of the sample is 40 mL and the specific gravity of solids is 2.65.




ANSWER = [B] 14.34mL

The capillary rise in one soil sample having D10 = 0.05 mm is 52 cm. If another soil has D10 = 0.10 and the same voids ratio as of the first soil then the value of capillary rise in the second soil is




ANSWER = [B] 26 cm

The surface of a saturated clay deposit is located permanently below the groundwater table. The clay has a natural water content of 43% and specific gravity of 2.70, the vertical intergranular pressure at depth of 11 meters is




ANSWER = [A] 84.92 kN/m2

A normally consolidated clay layer settles 2cm when the effective stress is increased from 80 to 160 kN/m2. When the effective stress is further increased to 320 kN/m2, the further settlement will be




ANSWER = [D] 2cm

Which of the following statement is correct?




ANSWER = [C] Zero air void and 100% saturation lines are same

What is the unit of dynamic viscosity of a fluid termed as ‘Poise’ equivalent to?




ANSWER = [B] dyne-seccm2

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