Civil Engineering
2025 · Paper 1
Take it one question at a time. Try an answer, then check your understanding.
Complete GATE CE 2025 Paper 1 overview, original pages and practice · Timed previous-paper practice
Questions 43–45 of 65. Imported answers require review unless explicitly marked reviewed.
Question 43
Open questionCEMSQ2 marksNeeds review
Lacey’s regime equations, followed in India for making scour calculations while designing hydraulic structures across alluvial channels, are given below. Regarding these equations, which of the following statements is/are true:
where,
is discharge and
is silt factor.Your answerSelect all correct options. You can choose more than one.
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Open questionCEMSQ2 marksNeeds review
MgCl₂ and CaSO₄ salts are added to 1 litre of distilled deionized water and mixed until completely dissolved. Total Dissolved Solids (TDS) concentration is 500 mg/l, and Total Hardness (TH) is 400 mg/l (as CaCO₃). The amounts of MgCl₂ and CaSO₄ added are calculated (rounded off to the nearest integer). Which of the following options is/are true:
Atomic weights: Ca(40), Mg(24), S(32), O(16), Cl(35.5), C(12)
Your answerSelect all correct options. You can choose more than one.
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Open questionCEMSQ2 marksNeeds review
A facultative pond system is employed for wastewater treatment. Which of the following statements is/are true:
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