Reading Mode - Questions

The Commerce Clause (as interpreted in cases like Wickard v. Filburn and NFIB v. Sebelius) is usually the go-to power for regulating activities that, in the aggregate, have a substantial effect on interstate commerce, though NFIB placed limits on 'compelling' activity.

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Chemistry QUESTION #5567

Question 9804

Arrange the following substituted phenols in decreasing order of acidity: (I) 4-chlorophenol, (II) 4-methylphenol, (III) 4-nitrophenol, (IV) 4-methoxyphenol

II > IV > I > III
I > II > III > IV
III > I > IV > II✔️
IV > III > I > II

Correct Answer Logic:

Acidity of phenols increases with electron-withdrawing groups (EWG) and decreases with electron-donating groups (EDG). $NO_2$ (strong EWG) makes phenol most acidic; $Cl$ (weak EWG); $CH_3$ and $OCH_3$ are EDGs (reduce acidity). Order of decreasing acidity: III ($NO_2$) > I ($Cl$) > II ($CH_3$) > IV ($OCH_3$), i.e., C is correct.

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Biology QUESTION #7248

Question 9805

Which one of the following is a slime mould?

Anabaena
Rhizopus
Physarum✔️
Thiobacillus

Correct Answer Logic:

Physarum is a classic example of a slime mould (Myxomycetes/Mycetozoa). Anabaena is a cyanobacterium, Rhizopus is a zygomycete fungus, and Thiobacillus is a chemolithotropic bacterium. Slime moulds are placed in kingdom Protista.

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Administration QUESTION #9551

Question 9806

A civil servant in Grade 19 applies for promotion to Grade 20. According to the Civil Servants Act 1973 and constitutional provisions, which appointing authority is responsible for appointments at Grade 20 and above?

Federal Public Service Commission through competitive examination
Prime Minister through the Cabinet Secretariat on the advice of the Establishment Division
The President of Pakistan✔️
The relevant Minister in consultation with the Secretary of the Ministry

Correct Answer Logic:

Article 240 of the Constitution and Civil Servants Act 1973 establish that appointments at Grade 20 and above are made by the President. This reflects the constitutional principle that senior civil service appointments carry national significance and require presidential authority.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3491

Question 9807

'Senna' and 'Aloe' belong to which chemical class of glycosides?

Saponin Glycosides
Anthraquinone Glycosides✔️
Cardiac Glycosides
Cyanophore Glycosides

Correct Answer Logic:

Anthraquinone glycosides are well known for their stimulant laxative properties.

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MBBS QUESTION #10288

Question 9808

Sheehan's syndrome, resulting from postpartum pituitary infarction after severe obstetric hemorrhage, classically presents with:

Isolated hyperthyroidism with no other hormonal deficiency
Panhypopituitarism, often first noticed as failure of lactation (agalactorrhea) due to loss of prolactin, along with other anterior pituitary hormone deficiencies✔️
Excessive ACTH production with hyperpigmentation
Isolated diabetes insipidus with entirely normal anterior pituitary function

Correct Answer Logic:

Severe postpartum hemorrhage and hypotension can cause ischemic infarction of the enlarged, hyperemic postpartum pituitary gland, producing panhypopituitarism; failure to lactate (due to prolactin deficiency) is often the first clinical clue, followed by features of thyroid, adrenal, and gonadal hormone insufficiency.

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Reading and Writing (Module-1) QUESTION #5317

Question 9809

Researchers observed that the bioluminescent glow of certain deep-sea jellyfish is not continuous but rather ______, occurring only when the organism is disturbed by a potential predator. Which choice completes the text with the most logical and precise word?

intermittent✔️
persistent
intense
ubiquitous

Correct Answer Logic:

Since the glow occurs 'only when disturbed,' it is not constant, thus it is 'intermittent.'

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Pakistan Affairs QUESTION #9048

Question 9810

The major source of electrical energy in Pakistan is:

Thermal Power (fossil fuels)✔️
Hydroelectricity
Nuclear Power
Solar Energy

Correct Answer Logic:

Thermal (oil, gas, coal) is the largest source.

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Administration QUESTION #9590

Question 9811

During an employee orientation programme, a new hire learns the company's history, values, and reporting structure. Six months later, the same employee attends a leadership development workshop. Which HRM classification correctly categorizes each activity, and what is the purpose distinction?

Both are training — the first addresses job-specific skills; the second addresses managerial competencies
The first is orientation (socialization into organizational context and role expectations); the second is development (building future leadership capability beyond current job requirements) — orientation creates organizational fit while development builds career potential✔️
The first is induction (administrative onboarding); the second is training (skill acquisition for a specific current role)
Both are development activities — orientation develops cultural intelligence; the leadership workshop develops technical skills

Correct Answer Logic:

HRM distinguishes: orientation/socialization (familiarizing new employees with organizational context, culture, policies, procedures — reducing adjustment uncertainty), training (developing skills for current job performance), and development (building capabilities for future roles and responsibilities). The distinction matters for ROI measurement, needs assessment and timing of interventions.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3087

Question 9812

Which hormone increases blood calcium levels by stimulating bone resorption by osteoclasts?

Calcitonin
Parathyroid Hormone (PTH)✔️
Insulin
Thyroxine

Correct Answer Logic:

PTH increases calcium in the blood by breaking down bone matrix.

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Electronics Engineering QUESTION #11743

Question 9813

When performing a hipot (dielectric withstand) test on a completed PCB assembly, the test voltage is applied between:

All circuit nodes and chassis/earth ground simultaneously
Primary and secondary circuits (or mains to safety ground) while all other points are connected together✔️
Individual components and their reference pins
The PCB surface and the copper ground plane through the substrate

Correct Answer Logic:

Hipot testing applies elevated voltage (typically 1.5–3 kV AC or 2–4 kV DC for mains equipment) between primary mains circuits and secondary/chassis earth (or between isolated circuits) to verify that the insulation can withstand overvoltage without breakdown. All primary conductors are connected together, and all secondary/earth conductors are connected together, maximising stress across the insulation barrier.

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Math Physics Chemistry Biology QUESTION #578

Question 9814

Which of the following may build coral reefs along with coral animals?

Myxomycota
Brown algae
Green algae
Red algae✔️

Correct Answer Logic:

Red coralline algae help build reefs

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MBBS QUESTION #10371

Question 9815

The polymerase chain reaction (PCR), used to exponentially amplify a specific target DNA sequence in vitro, consists of which three essential, repeated cyclic steps?

Denaturation (strand separation), annealing (primer binding), and extension (elongation)✔️
Transcription, translation, and replication
Ligation, restriction enzyme digestion, and gel electrophoresis
Centrifugation, filtration, and chemical precipitation

Correct Answer Logic:

Each PCR cycle involves heat denaturation of double-stranded DNA, annealing of short complementary primers to the target sequence at a lower temperature, and extension of new DNA strands by a heat-stable DNA polymerase (e.g., Taq polymerase) — repeated cycles exponentially amplify the target sequence, forming the basis of modern molecular diagnostics.

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MBBS QUESTION #10366

Question 9816

DNA replication proceeds semiconservatively, meaning that:

Each of the two resulting daughter DNA double helices consists of one original (parental) strand paired with one newly synthesized strand✔️
Both daughter molecules are entirely newly synthesized, with no parental strands retained in either
Both daughter molecules retain both original parental strands completely unchanged
Replication produces only RNA transcripts rather than new DNA molecules

Correct Answer Logic:

The semiconservative model (confirmed by the Meselson-Stahl experiment) shows that each daughter DNA molecule conserves one intact parental strand, serving as the template, paired with one newly synthesized complementary strand.

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Psychology QUESTION #9903

Question 9817

Disagreeing with Freud, Erikson emphasized more on:

Conflict
Racial memory
Adulthood✔️
Early habits

Correct Answer Logic:

While Freud focused on early childhood psychosexual conflicts, Erikson extended development across the entire lifespan, giving major emphasis to adulthood. His eight stages span from infancy to old age, versus Freud's stages ending at adolescence.

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