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Author name: Umar

Umar Draz is a Pakistani educationist, academic writer, and researcher known for his contributions in the field of education and competitive exam preparation. He is the author of the widely used educational book “Nucleus of Education”, which serves as a key reference for candidates preparing for teaching and public service commission examinations in Pakistan.

Which isotope is used in carbon dating?

A. Carbon-12
B. Carbon-13
C. Carbon-14.
D. Carbon-15

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Constable Model Past paper 2025 PDF Every Day Science

Which enzymes are known as molecular scissors in genetic engineering?

A. Polymerases
B. Ligases
C. Restriction enzymes.
D. Amylases

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Constable Model Past paper 2025 PDF Every Day Science

What is the Albedo Effect?

A. Absorption of heat by oceans
B. Reflection of solar energy from Earth’s surface.
C. Melting of polar ice caps
D. Radiation emitted by electronic devices

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Constable Model Past paper 2025 PDF Every Day Science

Which part of the brain controls decision making and personality?

A. Cerebellum
B. Prefrontal Cortex.
C. Medulla Oblongata
D. Occipital Lobe

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Constable Model Past paper 2025 PDF Every Day Science

What is the main biological cause of antibiotic resistance?

A. Lack of physical exercise
B. Genetic mutation and gene transfer.
C. Eating expired food
D. Vitamin deficiencies

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Constable Model Past paper 2025 PDF Every Day Science

Which vitamin is known as Tocopherol?

A. Vitamin A
B. Vitamin C
C. Vitamin D
D. Vitamin E.

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Constable Model Past paper 2025 PDF Every Day Science

Ozone depletion is mainly caused by which chemicals?

A. Carbon dioxide
B. Chlorofluorocarbons (CFCs).
C. Nitrogen gas
D. Methane

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Constable Model Past paper 2025 PDF Every Day Science

Which layer of the atmosphere is known as the ‘Heat Sphere’?

A. Troposphere
B. Stratosphere
C. Mesosphere
D. Thermosphere.

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Constable Model Past paper 2025 PDF Every Day Science

What is the fundamental difference between ‘Nuclear Fission’ and ‘Nuclear Fusion’?

A. Fission joins light nuclei; fusion splits heavy nuclei
B. Fission splits heavy nuclei; fusion joins light nuclei.
C. Fission requires higher temperature than fusion
D. Fission produces no radioactive waste

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Constable Model Past paper 2025 PDF Every Day Science

In the context of Human Biology, what is the ‘Telomere’ and why is it significant in aging?

A. A brain cell that stops functioning
B. Protective caps at the end of chromosomes that shorten as cells divide.
C. A stomach enzyme that breaks down proteins
D. A type of white blood cell

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Constable Model Past paper 2025 PDF Every Day Science

The antonym of Military?

A. Army
B. Martial
C. Civil
D. Naval

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Constable Model Past paper 2025 PDF English Grammar MCQS

Which of the following spelling is correct?

A. Agrandise
B. Aggrandize
C. Agranzide
D. Agorandise

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Constable Model Past paper 2025 PDF English Grammar MCQS

____ you ever been to Amsterdam?

A. Do
B. Has
C. Have
D. Did

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Constable Model Past paper 2025 PDF English Grammar MCQS

What is the synonym of WRATH?

A. Joy
B. Anger
C. Peace
D. Love

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Constable Model Past paper 2025 PDF English Grammar MCQS

Neha is traveling _____ the school.

A. Toward
B. down
C. into
D. across

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Constable Model Past paper 2025 PDF English Grammar MCQS

The whole nation was ____ the president.

A. against
B. behind
C. front
D. besides

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Constable Model Past paper 2025 PDF English Grammar MCQS

The antonym of Categorical:

A. Absolute
B. Conditional
C. Definite
D. Positive

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Constable Model Past paper 2025 PDF English Grammar MCQS

The Antonym of Provoke is?

A. Soothe
B. Allay
C. Pacify
D. All of these (Soothe, Allay, Pacify)

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Constable Model Past paper 2025 PDF English Grammar MCQS

The Synonym of “Bemoan” is?

A. Rejoice
B. Lament
C. Praise
D. Laugh

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Constable Model Past paper 2025 PDF English Grammar MCQS

The Antonym of ‘Subversion’ is _____?

A. Sabotage
B. Destruction
C. Compliance
D. Rebellion

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Constable Model Past paper 2025 PDF English Grammar MCQS

The Synonym of ABANDON is?

A. Leave
B. Desert
C. Keep
D. Both A and B (Leave and Desert)

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Constable Model Past paper 2025 PDF English Grammar MCQS

The synonym of ‘Obdurate’ is:

A. Flexible
B. Yielding
C. Stubborn
D. Merciful

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Constable Model Past paper 2025 PDF English Grammar MCQS

The Antonym of DEARTH is?

A. Scarcity
B. Abundance
C. Poverty
D. Shortage

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Constable Model Past paper 2025 PDF English Grammar MCQS

Which section of the Act deals with the “Power to make rules”?

A. Section 5
B. Section 7
C. Section 9
D. Section 11

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Constable Model Past paper 2025 PDF

What is the rank of the officer who heads an FIA “Zone” (e.g., Zone Punjab)?

A. Deputy Director
B. Director
C. Additional Director General
D. Inspector

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Constable Model Past paper 2025 PDF
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