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Pakistan's MCQ Practice Library for Competitive Exams

mcqpk.com helps students and job candidates practise multiple-choice questions by subject, then build a free test to check what they have learned.

Questions are reviewed over time, but syllabuses and factual answers can change. Always confirm important information with the relevant official source.

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Recently added practice questions

8541. In a packed bed absorption column, the channelling will be noted by the ____________________?
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A. None of these

B. Increase in flow rate

C. Sharp drop in pressure drop

D. Sharp rise in pressure drop

8542. In a packed bed absorption column, the channelling will be noted by the ____________________?
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A. None of these

B. Increase in flow rate

C. Sharp drop in pressure drop

D. Sharp rise in pressure drop

8543. In a multipass shell and tube heat exchanger, the baffles on shell side is primarily provided for______________?
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A. Fixing the tubes

B. Creating turbulence

C. Reducing scale deposition

D. Increasing pressure drop

8544. In A Mother, what does Mrs. Kearney make her daughter learn ?
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A. the piano

B. the English language

C. the violin

D. the Irish language
8545. In a monohybrid cross, 2 heterozygous individuals were crossed, phenotypic ratio came to be (2:1), it is due to__________________?
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A. Dominant lethal genes in heterozygous individuals

B. Dominant lethal genes in homozygous individuals

C. Dominant epistasis

D. None of the above

8547. In a manual shunt motor starter?
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A. over load relay is connected in series and no volt relay in parallel with the load

B. over load relay is connected in parallel and no volt relay in series with the load

C. over load relay and no volt relay are both connected in series with the load

D. over load relay and no volt relay are both connected in parallel with the load

8548. In a lead-acid battery the energy is stored in the form of___________?
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A. electrostatic energy

B. chemical energy

C. charged ions

D. electromagnetic energy

8549. In a historic test match (11-15 May), Pakistan have defeated Ireland by __________?
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A. 9 wickets

B. 180 runs

C. Five wickets

D. An innings & 15 runs

8550. In a gusseted base, when the end of the column is machined for complete bearing on the base plate, then the axial load is assumed to be transferred to base plate__________________?
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A. 75% by direct bearing and 25% through fastenings

B. fully by direct bearing

C. fully through fastenings

D. 50% by direct bearing and 50% through fastenings
8552. In a good rimming steel_________________________?
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A. Carbon and silicon should be low

B. Silicon should be low but carbon should be high

C. Both silicon & carbon should be high

D. Silicon should be high but carbon should be low

8553. In a gas-liquid shell and tube heat exchanger, the_________________?
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A. Gases to be heated/cooled is normally routed through the shell side, because the corrosion

B. Presence of a non-condensable gas decreases the condensing film co-efficient

C. rosive in nature

D. Gases under high pressure are routed through the tube side, because high pressure gases are

E. All A, B. & C.

F. sed by the cooling water or steam condensate remain localised to the tubes

8554. In a fully mechanised composting plant, involves________________?
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A. Mechanized segregation

B. All of these

C. Mechanized receipt

D. Mechanized pulverising of refuse

8555. In a full bridge VSI, in order to avoid the short circuit across the DC bus and the undefined AC output voltage condition, the modulating technique should ensure that___________?
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A. Bottom switch of each leg is on at any instant

B. Top switch of each leg is on at any instant

C. None of these

D. Either A. or B.
8556. In a full bridge VSI, in order to avoid the short circuit across the DC bus and the undefined AC output voltage condition, the modulating technique should ensure that___________?
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A. None of these

B. Either A. or B.

C. Top switch of each leg is on at any instant

D. Bottom switch of each leg is on at any instant

8557. In a free market?
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A. government intervenes

B. government interferes

C. Prices adjust to reconcile scarcity and desires

D. government plan production

8559. In a flyback converter, the inductor of the buck-boost converter has been replaced by a_____________?
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A. Flyback transformer

B. Flyback transistor

C. Flyback resistor

D. Flyback capacitor

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  1. Choose a subject from the navigation or subject directory.
  2. Work through the questions and compare each option with the marked answer.
  3. Use the online quiz to practise a mixed or subject-specific set.
  4. Report a doubtful answer so it can be reviewed and corrected.

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