GATE CE topic:infrastructure PYQs & Answers — Page 84

Questions 831–840 of 1300. Imported answers require independent review unless marked reviewed.

During chlorination process, aqueous (aq) chlorine reacts rapidly with water to form Cl⁻, HOCl, and H⁺ as shown below

Cl₂ (aq) + H₂O ⇌ HOCl + Cl⁻ + H⁺

The most active disinfectant in the chlorination process from amongst the following, is

Your answerChoose one option.

H⁺

HOCl

Cl⁻

H₂O

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The relationship between oxygen consumption and equivalent biodegradable organic removal (i.e., BOD) in a closed container with respect to time is shown in the figure

Diagram for Civil Engineering question 16

Assume that the rate of oxygen consumption is directly proportional to the amount of degradable organic matter and is expressed as

, where,

(in mg/litre) is the oxygen equivalent of the organics remaining at time

and

(in d

) is the degradation rate constant.

is the oxygen equivalent of organic matter at time,

In the above context, the correct expression is

Your answerChoose one option.

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An amount of 35.67 mg HCl is added to distilled water and the total solution volume is made to one litre. The atomic weights of H and Cl are 1 and 35.5, respectively. Neglecting the dissociation of water, the pH of the solution, is

Your answerChoose one option.

3.50

3.01

2.50

2.01

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A gas contains two types of suspended particles having average sizes of 2 μm and 50 μm. Among the options given below, the most suitable pollution control strategy for removal of these particles is

Your answerChoose one option.

settling chamber followed by bag filter

electrostatic precipitator followed by venturi scrubber

electrostatic precipitator followed by cyclone separator

bag filter followed by electrostatic precipitator

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The probability that a 50 year flood may NOT occur at all during 25 years life of a project (round off to two decimal places), is ________.

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A fair (unbiased) coin is tossed 15 times. The probability of getting exactly 8 Heads (round off to three decimal places), is __________.

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A planar elastic structure is subjected to uniformly distributed load, as shown in the figure

Diagram for Civil Engineering question 19

(not drawn to the scale)

Neglecting self-weight, the maximum bending moment generated in the structure (in kN.m, round off to the nearest integer), is ________.

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The maximum applied load on a cylindrical concrete specimen of diameter 150 mm and length 300 mm tested as per the split tensile strength test guidelines of IS 5816:1999 is 157 kN. The split tensile strength (in MPa, round off to one decimal place) of the specimen is __________.

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In an urban area, a median is provided to separate the opposing streams of traffic. As per IRC:86-1983, the desirable minimum width (in m, expressed as integer) of the median, is ________.

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For an axle load of 15 tonne on a road, the Vehicle Damage Factor (round off to two decimal places), in terms of the standard axle load of 8 tonne, is __________.

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GATE CE topic:infrastructure PYQs

Question 16

Question 16

Question 17

Question 17

Question 18

Question 18

Question 19

Question 19

Question 20

Question 20