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Correct Answer Logic:
Observation as a research method involves systematically watching and recording behavior in natural settings without artificially manipulating conditions.
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Correct Answer Logic:
The text compares a flower needing water to the mind needing spiritual nourishment, both requiring proper feeding to flourish rather than languish.
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Physics QUESTION #7008
Question 3

Two magnetic materials A and B have different hysteresis loops. Material A has a wide, large-area loop and material B has a narrow, small-area loop. For use in electric generators, transformer cores, and electromagnet cores, the correct assignment is:

  • A for electromagnets and B for electric generators
  • A for transformers and B for electric generators
  • B for electromagnets and transformers✔️
  • A for electric generators and transformers
Correct Answer Logic:

Key properties:

  • Wide hysteresis loop (A): High retentivity and high coercivity — hard magnetic material. Good for permanent magnets (used in electric generators).
  • Narrow hysteresis loop (B): Low retentivity, low coercivity, low energy loss per cycle — soft magnetic material. Ideal for transformers and electromagnets (needs to magnetise/demagnetise repeatedly with low loss).

Electric generators use permanent magnets (wide loop, material A). Transformers and electromagnets use soft material (B). So Option C is correct.

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MCQs Section QUESTION #5057
Question 4
حروفِ انبساط کی نشاندہی کریں۔
  • ہائے ہائے
  • واہ واہ✔️
  • حیف صد حیف
  • ان میں سے کوئی نہیں
Correct Answer Logic:
حروفِ انبساط وہ حروف ہیں جو خوشی کے اظہار کے لیے استعمال ہوتے ہیں۔ 'واہ واہ' انبساط کی علامت ہے۔
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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3108
Question 5
The 'Epiglottis' is a cartilaginous structure that functions to:
  • Produce sound
  • Filter dust
  • Prevent food from entering the trachea✔️
  • Warm the air
Correct Answer Logic:
The epiglottis closes over the larynx during swallowing.
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Law QUESTION #9509
Question 6
A obtains a decree for Rs. 1,000,000 with interest at 10% per annum from the date of the suit. B satisfies only the principal amount. A applies to execute the decree for post-decree interest. B argues the decree is silent about post-decree interest, so none is payable. Is B correct?
  • No; post-decree interest is automatically equal to the pre-decree interest rate
  • No; Section 34(2) CPC provides that where a money decree is silent about further interest from the date of the decree to payment, the Court shall be presumed to have refused such further interest, but the Court retains power to award interest at the Court rate in appropriate cases; moreover, the decree-holder may apply for interest under the terms of the decree✔️
  • Yes; once the principal is paid the decree is fully satisfied
  • Yes; if the decree is silent, no post-decree interest accrues
Correct Answer Logic:
Section 34 CPC governs interest. Sub-section (2) provides that silence in a decree on further interest creates a presumption of refusal of post-decree interest at the rate awarded, though the Court may award interest at the Court rate. If the decree expressly awards interest from the date of suit to the date of decree, it speaks only to that period; execution for post-decree interest depends on the terms of the decree and Section 34(2).
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Business, Public administration and Policy QUESTION #10536
Question 7
Which of the following best identifies a defining feature of modern governance?
  • Strong ministerial command-and-control over policy
  • Policy formulation exclusively through hierarchical command
  • Blurring of boundaries between public and private sectors✔️
  • Elimination of bureaucratic structures
Correct Answer Logic:
Modern governance is characterized by the blurring of public-private boundaries — the state increasingly shares authority with private firms, NGOs, international organizations, and citizens through partnerships, contracting, regulation, and networks. This shift from 'government' (hierarchical, state-centred) to 'governance' (networked, multi-actor) reflects the complexity of contemporary public problems that no single actor can solve alone.
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Math Physics Chemistry Biology QUESTION #566
Question 8
The two strands in DNA are coiled __________ to each other.
  • Parallel
  • Antiparallel✔️
  • Both A, B
  • None of these
Correct Answer Logic:
DNA strands run antiparallel
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Correct Answer Logic:
Let numbers be $x, y$. $x+y=25$ and $x-y=7$. Adding gives $2x=32 \implies x=16$.
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MCQs Section QUESTION #4896
Question 10
A firm that specializes in the analysis of handwriting claims _____ more than three hundred personality traits, including enthusiasm, imagination, and ambition.
  • from a one-page writing sample that it can assess
  • from a one-page writing sample it has the ability of assessing
  • the ability, from a one-page writing sample, of assessing
  • to be able, from a one-page writing sample, to assess✔️
Correct Answer Logic:
Claims to be able…to assess' is the proper idiomatic construction. Option A misplaces the modifier 'from a one-page writing sample' before the 'that' clause. Options B and C use non-idiomatic constructions. Option E would produce a dangling participial phrase.
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Math Physics Chemistry Biology QUESTION #797
Question 11
Which of the following is the formula of methylene chloride?
  • \(\text{CH}_2\text{Cl}_2\)✔️
  • \(\text{CHCl}_3\)
  • \(\text{CH}_3\text{Cl}\)
  • \(\text{CCl}_4\)
Correct Answer Logic:
Methylene chloride (dichloromethane) has the formula \(\text{CH}_2\text{Cl}_2\). \(\text{CHCl}_3\) is chloroform and \(\text{CCl}_4\) is carbon tetrachloride.
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Boilers Mechanical Engineering QUESTION #4034
Question 12
A 'Manhole' in a boiler is provided for:
  • Looking at the fire
  • Entry of a person for internal inspection and cleaning✔️
  • Filling the fuel
  • Letting air out
Correct Answer Logic:
Every large boiler must have access points for maintenance.
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English QUESTION #2649
Question 13
Identify the tense: 'The sun sets in the west.'
  • Simple Present✔️
  • Present Continuous
  • Simple Past
  • Future Simple
Correct Answer Logic:
Simple Present is used for universal truths and habitual actions.
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The Constitution of Pakistan QUESTION #9350
Question 14
Under Article 175B, the Federal Constitutional Court must maintain what composition regarding judges from provinces?
  • Majority from the largest province
  • Equal number from each province with at least one from Islamabad High Court✔️
  • Proportional representation based on population
  • At least two from each province
Correct Answer Logic:
Article 175B(1) proviso requires that the Federal Constitutional Court 'shall have equal number of Judges from each Province and at least one Judge from Islamabad High Court.' The explanation adds that the number of judges from the Islamabad High Court cannot exceed the number from any province.
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Civil Engineering QUESTION #6566
Question 15
The resultant of a system of concurrent forces can be determined by:
  • Triangle law
  • Parallelogram law
  • Polygon law
  • All of the above✔️
Correct Answer Logic:
All three laws — Triangle, Parallelogram, and Polygon (Lami's extension) — are valid graphical and analytical methods for finding the resultant of a force system.
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Boilers Mechanical Engineering QUESTION #3985
Question 16
'Blow-down' operation is performed in a boiler primarily to:
  • Increase steam pressure
  • Remove accumulated sludge and dissolved solids from the bottom✔️
  • Clean the chimney
  • Cool down the furnace quickly
Correct Answer Logic:
Continuous or intermittent blow-down prevents scale formation by reducing the concentration of impurities.
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Correct Answer Logic:
Rule 59(b) and (e) both specify a time limit of no later than 28 days after the entry of judgment.
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Math Physics Chemistry Biology QUESTION #11251
Question 18
Which of the following is the primary site of ATP synthesis during cellular respiration?
  • Cytoplasm
  • Outer mitochondrial membrane
  • Inner mitochondrial membrane✔️
  • Intermembrane space
Correct Answer Logic:
ATP synthase is embedded in the inner mitochondrial membrane. As protons flow through this enzyme from the intermembrane space back into the matrix, the rotational energy drives ATP synthesis.
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English QUESTION #2663
Question 19
Choose the word that has a similar meaning to: 'ABANDON'
  • Keep
  • Forsake✔️
  • Adopt
  • Protect
Correct Answer Logic:
To 'abandon' means to leave or give up completely; 'forsake' is to desert.
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Correct Answer Logic:
Epistasis (Greek: 'standing upon') occurs when one gene (the epistatic gene) masks or suppresses the phenotypic expression of another gene at a different (non-allelic) locus (the hypostatic gene). This is a form of gene-gene interaction (non-allelic interaction). Classic examples: coat colour genes in Labrador dogs; feather colour in chickens. Epistasis modifies expected Mendelian ratios (9:3:3:1) to produce ratios like 9:7, 12:3:1, 9:3:4, or 15:1.
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