Pipe schedule number relates to

wall thickness for given nominal diameter

Gate valve is suited for

on-off service with low pressure drop when open

process units within battery limits

Pump suction piping should minimize

friction losses and entrained vapor

Piping and Plant Layout MCQs 2026

5 questions with detailed answers · 4 from past papers · 1 quiz batches available

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Page 1 of 1Questions 1–10 of 5

Q1Past Paper · PPSC/FPSC/CSSeasy
Pipe schedule number relates to
1. Awall thickness for given nominal diameter
2. Bonly fluid color
3. Conly catalyst porosity
4. Donly tray efficiency
💡 Explanation:
Schedule defines wall thickness.
Q2easy
Gate valve is suited for
1. Athrottling fine flow always best
2. Bon-off service with low pressure drop when open
3. Conly reverse flow prevention only check
4. Donly sampling only
💡 Explanation:
Full bore low loss.
Q3Past Paper · PPSC/FPSC/CSSmedium
ISBL includes
1. Aprocess units within battery limits
2. Bonly administration offices far away always
3. Conly public highway
4. Donly residential area
💡 Explanation:
Inside battery limits.
Q4Past Paper · PPSC/FPSC/CSSeasy
Check valve prevents
1. Aexcessive forward pressure always
2. Breverse flow
3. Cpipe corrosion entirely
4. Dheat loss entirely
💡 Explanation:
Non-return function.
Q5Past Paper · PPSC/FPSC/CSSmedium
Pump suction piping should minimize
1. Aonly paint color variation
2. Bonly concrete strength
3. Cfriction losses and entrained vapor
4. Donly tray count
💡 Explanation:
NPSH margin protection.

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Piping and Plant Layout MCQs 2026

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