Environmental Science and Engineering
2022 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE ES 2022 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 10–12 of 65. Imported answers require review unless explicitly marked reviewed.
Question 10
Open questionGAMCQ2 marksNeeds review
Consider the following square with the four corners and the center marked as P, Q, R, S and T respectively. Let X, Y and Z represent the following operations:
X: rotation of the square by 180 degree with respect to the S-Q axis.
Y: rotation of the square by 180 degree with respect to the P-R axis.
Z: rotation of the square by 90 degree clockwise with respect to the axis perpendicular, going into the screen and passing through the point T.
Consider the following three distinct sequences of operation (which are applied in the left to right order).
(1) XYZ
(2) XY
(3) ZZZ
Which one of the following statements is correct as per the information provided above?

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Open questionESMCQ1 markNeeds review
A student reported following arsenic concentrations in water samples:
| Arsenic concentration (mg/L) | 0.10 | 0.12 | 0.20 | 0.05 | 0.40 | 0.30 | 0.35 |
Which one of the following is a correct statement about arsenic concentration distribution?
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Open questionESMCQ1 markNeeds review
X is normally distributed with following data (25.8, 36.6, 26.3, 21.8, 27.2). Select the correct statement about X (
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