Complete GATE CE 2025 Paper 2 overview, original pages and practice · Timed previous-paper practice

Questions 34–36 of 65. Imported answers require review unless explicitly marked reviewed.

Paper practice 65 questionsPage 12 of 22

Question 34

Open question
CENAT1 markNeeds review
Free residual chlorine concentration in water was measured to be 2 mg/l (as Cl

). The pH of water is 8.5. By using the chemical equation given below, the HOCl concentration (in

moles/l) in water is ______________ (round off to one decimal place).
HOCl ⇌ H

+ OCl

, pK = 7.50
Atomic weight: Cl (35.5)

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Question 35

Open question
CENAT1 markNeeds review
A surveyor measured the distance between two points on the plan drawn to a scale of 1 cm = 40 m and the result was 468 m. Later, it was discovered that the scale used was 1 cm = 20 m.
The true distance between the points (in m) is _____ (round off to the nearest integer).

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Question 36

Open question
CEMCQ2 marksNeeds review
Pick the CORRECT solution for the following differential equation
Your answerChoose one option.

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