Questions 41–50 of 200. Imported answers require independent review unless marked reviewed.

Topic practice 200 questionsPage 5 of 20

Question 8

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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.
Diagram for Environmental Science and Engineering question 8

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Question 9

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If a real variable

satisfies

, then the value of

is:
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Question 10

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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.
Diagram for Environmental Science and Engineering question 10

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Question 11

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Assuming

; Laplace transform of

is
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Question 12

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For the ordinary differential equation

, the general solution is
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Question 13

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Consider the following two series
P:

Q:

Choose the correct option from the following
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Question 14

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Choose the redox reaction from the following
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Question 15

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Which one of the following is performed by autotrophic bacteria?
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Question 16

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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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Question 17

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For a gradually varied flow, consider the following statements
P:

in M

surface profile
Q:

in S

surface profile
where,

is normal depth,

is critical depth, and

is flow depth.
Choose the correct option from the following
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