Environmental Science and Engineering
GATE ES format:mcq PYQs
Build your understanding with focused practice from past exam papers.
Questions 41–50 of 200. Imported answers require independent review unless marked reviewed.
Question 8
Open questionGAMCQ2 marksNeeds review
A regular dodecagon (12-sided regular polygon) is inscribed in a circle of radius r cm as shown in the figure. The side of the dodecagon is d cm. All the triangles (numbered 1 to 12 in the figure) are used to form squares of side r cm and each numbered triangle is used only once to form a square.
The number of squares that can be formed and the number of triangles required to form each square, respectively, are:
Note: The figure shown is representative.

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If a real variable
satisfies
, then the value of
is:Your answerChoose one option.
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The number of patients per shift (
) consulting Dr. Gita in her past 100 shifts is shown in the figure. If the amount she earns per shift is ₹ 1000(
), what is the average amount (in ₹) she has earned per shift in the past 100 shifts?Note: The figure shown is representative.

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Assuming
; Laplace transform of
isYour answerChoose one option.
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For the ordinary differential equation
, the general solution isYour answerChoose one option.
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Consider the following two series
P:
Q:
Choose the correct option from the following
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Choose the redox reaction from the following
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Which one of the following is performed by autotrophic bacteria?
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For flood routing, consider the following statements
P: Hydrologic routing method uses continuity equation and momentum equation
Q: Hydraulic routing method uses continuity equation and energy equation
Choose the correct option from the following
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For a gradually varied flow, consider the following statements
P:
in M
surface profileQ:
in S
surface profilewhere,
is normal depth,
is critical depth, and
is flow depth.Choose the correct option from the following
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