Civil Engineering Gate Yearwise 

Civil Engineering Gate 2021 Set-1 Questions with Answer

Ques 14 GATE 2021 SET-1

Humans have the ability to construct worlds entirely in their minds, which don't exist in the physical world. So far as we know, no other species possesses this ability. This skill is so important that we have different words to refer to its different flavors, such as imagination, invention and innovation.
Based on the above passage, which one of the following is TRUE?

A

No species possess the ability to construct worlds in their minds.

B

The terms imagination, invention and innovation refer to unrelated skills.

C

We do not know of any species other than humans who possess the ability to construct mental worlds.

D

Imagination, invention and innovation are unrelated to the ability to construct mental worlds.


(c) is the correct answer.

Ques 15 GATE 2021 SET-1

The rank of the matrix

is

A

1

B

2

C

3

D

4


(b) is the correct answer.

Ques 16 GATE 2021 SET-1

A

B

C

D


(d) is the correct answer.

Ques 17 GATE 2021 SET-1

The shape of the cumulative distribution function of Gaussian distribution is

A

Horizontal Line

B

Straight line at 45 degree angle

C

Bell-shaped

D

S-shaped


(d) is the correct answer.

Ques 18 GATE 2021 SET-1

A propped cantilever beam EF is subjected to a unit moving load as shown in the figure (not to scale). The sign convention for positive shear force at the left and right sides of any section is also shown.

The CORRECT qualitative nature of the influence line diagram for shear force at G is

A

B

C

D


(b) is the correct answer.

Ques 19 GATE 2021 SET-1

Gypsum is typically added in cement to

A

prevent quick setting

B

enhance hardening

C

increase workability

D

decrease heat of hydration


(a) is the correct answer.

Ques 20 GATE 2021 SET-1

The direct and indirect costs estimated by a contractor for bidding a project is INR 160000 and INR 20000, respectively. If the mark up applied is 10% of the bid price, the quoted price (in INR) of the contractor is

A

200000

B

198000

C

196000

D

182000


(a) is the correct answer.

Ques 21 GATE 2021 SET-1

In an Oedometer apparatus, a specimen of fully saturated clay has been consolidated under a vertical pressure of 50 kN/m2 and is presently at equilibrium. The effective stress and pore water pressure immediately on increasing the vertical stress to 150 kN/m2, respectively are

A

150 kN/m2 and 0

B

100 kN/m2 and 50 kN/m2

C

50 kN/m2 and 100 kN/m2

D

0 and 150 kN/m2


(c) is the correct answer.

Ques 22 GATE 2021 SET-1

A partially-saturated soil sample has natural moisture content of 25% and bulk unit weight of 18.5 kN/m3. The specific gravity of soil solids is 2.65 and unit weight of water is 9.81 kN/m3. The unit weight of the soil sample on full saturation is

A

21.12 kN/m3

B

19.03 kN/m3

C

20.12 kN/m3

D

18.50 kN/m3


(b) is the correct answer.

Ques 23 GATE 2021 SET-1

If water is flowing at the same depth in most hydraulically efficient triangular and rectangular channel sections then the ratio of hydraulic radius of triangular section to that of rectangular section is

A

1 / √2

B

√2

C

1

D

2


(a) is the correct answer.

Ques 24 GATE 2021 SET-1

‘Kinematic viscosity’ is dimensionally represented as

A

M / LT

B

M / L2T

C

T2 / L

D

L2 / T


(d) is the correct answer.

Ques 25 GATE 2021 SET-1

Which one of the following statements is correct?

A

Pyrolysis is an endothermic process, which takes place in the absence of oxygen.

B

Pyrolysis is an exothermic process, which takes place in the absence of oxygen.

C

Combustion is an endothermic process, which takes place in the abundance of oxygen.

D

Combustion is an exothermic process, which takes place in the absence of oxygen.


(a) is the correct answer.

Ques 26 GATE 2021 SET-1

Which one of the following is correct?

A

The partially treated effluent from a food processing industry, containing high concentration of biodegradable organics, is being discharged into a flowing river at a point P. If the rate of degradation of the organics is higher than the rate of aeration, then dissolved oxygen of the river water will be lowest at point P.

B

The most important type of species involved in the degradation of organic matter in the case of activated sludge process based wastewater treatment is chemoheterotrophs.

C

For an effluent sample of a sewage treatment plant, the ratio BOD5-day, 20 °C upon ultimate BOD is more than 1.

D

A young lake characterized by low nutrient content and low plant productivity is called eutrophic lake.


(b) is the correct answer.

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