GATE ES format:mcq PYQs & Answers — Page 7

Questions 61–70 of 200. Imported answers require independent review unless marked reviewed.

Consider the following statements (i) Sound pressure changes with distance from the source (ii) Sound power is a property of the source (iii) Sound intensity is sound power per unit volume Choose the correct option from the following

Your answerChoose one option.

(i), (ii), and (iii) are correct

only (i) and (ii) are correct

only (i) and (iii) are correct

only (ii) and (iii) are correct

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At a pressure of 1 atmosphere and temperature of 25 °C, 365 μg m

of a pollutant corresponds to mixing ratio of 139 parts per billion (ppb). The atomic weights: C – 12, H – 1, O – 16, N – 14 and S – 32. Which one of the following options most closely represents the pollutant

Your answerChoose one option.

SO₂

NO₂

O₃

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Which option gives the best control strategies for Dioxins and Furans in the flue gas emitted from waste incineration facilities?

Your answerChoose one option.

Avoid burning polystyrene (PS) and polyethylene (PE); ensure the furnace temperature above 1000 °C; and use a bag filter for cleaning the flue gas.

Avoid burning polyvinyl chloride (PVC); quickly cool down the flue gas through the temperature range 400 - 250 °C; and use an activated carbon treatment for the flue gas.

Avoid burning food wastes; ensure the furnace temperature above 900 ± 50 °C; and use an electrostatic precipitator (ESP) for cleaning the flue gas.

Avoid burning metal bearing waste; ensure the flue gas temperature above 1000 °C; and use a venturi scrubber for cleaning the flue gas.

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If ‘→’ denotes increasing order of intensity, then the meaning of the words [sick → infirm → moribund] is analogous to [sily → ______ → daft]. Which one of the given options is appropriate to fill the blank?

Your answerChoose one option.

frown

fawn

vein

vain

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The 15 parts of the given figure are to be painted such that no two adjacent parts with shared boundaries (exclude corners) have the same color. The minimum number of colors required is

Diagram for Environmental Science and Engineering question 2

Your answerChoose one option.

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How many 4-digit positive integers divisible by 3 can be formed using only the digits , such that no digit appears more than once in a number?

Your answerChoose one option.

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The sum of the following infinite series is

Your answerChoose one option.

1/3

7/2

13/4

9/2

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In an election, the share of valid votes received by the four candidates A, B, C, and D is represented by the pie chart shown. The total number of votes cast in the election were 1,15,000, out of which 5,000 were invalid.

Diagram for Environmental Science and Engineering question 5

Based on the data provided, the total number of valid votes received by the candidates B and C is

Your answerChoose one option.

45,000

49,500

51,750

54,000

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Thousands of years ago, some people began dairy farming. This coincided with a number of mutations in a particular gene that resulted in these people developing the ability to digest dairy milk.

Based on the given passage, which of the following can be inferred?

Your answerChoose one option.

All human beings can digest dairy milk.

No human being can digest dairy milk.

Digestion of dairy milk is essential for human beings.

In human beings, digestion of dairy milk resulted from a mutated gene.

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The probability of a boy or a girl being born is 1/2. For a family having only three children, what is the probability of having two girls and one boy?

Your answerChoose one option.

3/8

1/8

1/4

1/2

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GATE ES format:mcq PYQs

Question 40

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Question 42

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