Reading Mode - Questions

'The' is used with unique objects (there is only one sun). Celestial bodies and geographical features use the definite article 'the'. So 'The sun' is correct.

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Biology QUESTION #7261

Question 2224

Which one of the following pairs is wrongly matched?

Coliforms — Vinegar✔️
Methanogens — Gobar gas
Yeast — Ethanol
Streptomycetes — Antibiotic

Correct Answer Logic:

The wrongly matched pair is Coliforms — Vinegar. Vinegar (acetic acid) is produced by Acetobacter (acetic acid bacteria), not coliforms. Coliforms (e.g., E. coli) indicate fecal contamination of water. Methanogens produce methane (biogas/gobar gas); Yeast ferments sugar to ethanol; Streptomyces produces many antibiotics (e.g., streptomycin).

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English QUESTION #2756

Question 2225

Choose the correct form: 'If she had left earlier

she ___ the train.'✔️
would catch
will catch
would have caught

Correct Answer Logic:

2

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Planning QUESTION #4963

Question 2226

What does 'Gentrification' typically result in?

Neighborhood decline
Displacement of lower-income residents✔️
Improved affordable housing
Reduced property values

Correct Answer Logic:

Gentrification often leads to displacement of lower-income residents as neighborhood improvements and influx of higher-income residents increase property values and living costs beyond affordability.

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Psychology QUESTION #9808

Question 2227

The objectivity of science primarily lies in:

The capability of scientists to avoid their society's prejudices
The choice of questions studied
Its methodology✔️
All of these

Correct Answer Logic:

Scientific objectivity is grounded in methodology — systematic, replicable, empirically verifiable procedures. The scientific method (controlled observation, peer review, replication) is the primary safeguard of objectivity.

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Geography QUESTION #6335

Question 2228

The sectoral shift from primary to secondary to tertiary employment during economic development is known as:

Structural transformation✔️
Demographic transition
Industrial revolution
Urbanization process

Correct Answer Logic:

Structural transformation (or Clark-Fisher model) describes the systematic shift of labor force from agriculture (primary) to manufacturing (secondary) to services (tertiary) as economies develop, reflecting rising agricultural productivity and changing demand patterns with income growth.

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Physics QUESTION #7050

Question 2229

A Y-shaped structure is created by welding together three rods of copper, brass, and steel. Each rod has a cross-sectional area of $4 \text{ cm}^2$. The copper rod's free end is at $100^\circ\text{C}$, while the ends of the brass and steel rods are at $0^\circ\text{C}$. The lengths of the copper, brass, and steel rods are $46 \text{ cm}$, $13 \text{ cm}$, and $12 \text{ cm}$, respectively. Given thermal conductivities (in CGS units) of $0.92$ for copper, $0.26$ for brass, and $0.12$ for steel, find the rate of heat flow through the copper rod.

$4.8 \text{ cal/s}$✔️
$6.0 \text{ cal/s}$
$1.2 \text{ cal/s}$
$2.4 \text{ cal/s}$

Correct Answer Logic:

Let the junction temperature be $T$. In steady state, the heat current entering the junction equals the heat current leaving it:

$H_{cu} = H_{br} + H_{st}$

$\frac{K_c A(100 - T)}{L_c} = \frac{K_b A(T - 0)}{L_b} + \frac{K_s A(T - 0)}{L_s}$

Substituting the values:

$\frac{0.92 \times 4 \times (100 - T)}{46} = \frac{0.26 \times 4 \times T}{13} + \frac{0.12 \times 4 \times T}{12}$

$0.02(100 - T) = 0.02T + 0.01T \implies 2 - 0.02T = 0.03T \implies T = 40^\circ\text{C}$

Rate of heat flow in copper rod $H_{cu} = 0.02 \times 4 \times (100 - 40) = 0.08 \times 60 = 4.8 \text{ cal/s}$.

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Constitutional Law QUESTION #5811

Question 2230

A state law requires all private and public employers to give employees a day of rest on their chosen 'Sabbath.' An employee at a large tech firm demands Sundays off. The firm fires him because Sundays are their busiest days. The employee sues under the state law. The employer argues the law violates the Establishment Clause. Is the law constitutional?

Yes, because it protects the free exercise rights of all employees.
Yes, because the law has a secular purpose of ensuring a day of rest for workers.
No, because it has the primary effect of advancing religion by giving an absolute preference to Sabbath observers.✔️
No, because it fails the 'neutrality' test by targeting only religious days of rest.

Correct Answer Logic:

In Thornton v. Caldor, the Supreme Court held that a law giving an absolute preference to Sabbath observers over all other interests violates the Establishment Clause because it lacks a secular purpose and primary effect that is neutral, essentially 'endorsing' religious practices over secular business needs.

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Accounting & Finance QUESTION #1218

Question 2231

Which of the following statements is generally correct about the reliability of audit evidence?

To be reliable, evidence should be conclusive rather than persuasive
Effective internal control system provides reliable audit evidence✔️
Evidence obtained from outside sources routed through the client
All of these

Correct Answer Logic:

An effective internal control system reduces the risk of material misstatement, making the audit evidence obtained in a well-controlled environment more reliable. Option (A) is incorrect — audit evidence is generally persuasive, not conclusive. Option (C) is incorrect — evidence from outside sources routed through the client is less reliable than direct external confirmation.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3299

Question 2232

'Active Immunity' differs from 'Passive Immunity' because it involves:

Injection of pre-formed antibodies
The body's own production of antibodies and memory cells✔️
A short duration of protection
No immune response

Correct Answer Logic:

Active immunity is slower to develop but provides long-lasting protection.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3387

Question 2233

'Hemoglobin' is an example of a protein with a:

Primary structure only
Secondary structure only
Tertiary structure only
Quaternary structure✔️

Correct Answer Logic:

It consists of four polypeptide subunits ($2\alpha$ and $2\beta$).

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Physics QUESTION #1165

Question 2234

At constant pressure and volume, the exact relation between $C_p$ and $C_v$ is:

C_p > C_v
$C_p / C_v > 1$
$C_p - C_v = R$
All of these✔️

Correct Answer Logic:

All three relations are simultaneously true for an ideal gas: (A) $C_p > C_v$ because at constant pressure extra heat is needed to do work against expansion. (B) $C_p/C_v = \gamma > 1$. (C) The Mayer relation: $C_p - C_v = R$ (per mole). So all of these are correct.

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The Constitution of Pakistan QUESTION #9375

Question 2235

The Attorney-General for Pakistan under Article 100(1) must be qualified to be appointed as a Judge of which court?

A High Court
The Supreme Court
The Federal Constitutional Court✔️
The Federal Shariat Court

Correct Answer Logic:

Article 100(1) as amended by the 27th Amendment 2025 requires the Attorney-General to be 'a person qualified to be appointed a Judge of the Federal Constitutional Court.' Previously the standard was qualification for the Supreme Court. This change reflects the FCC's new supreme constitutional position.

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Ability / HR / Governance / Special Education QUESTION #1884

Question 2236

Under Rule 5(1)(i) when the Authority is the President or Prime Minister who exercises the powers of the authority regarding suspension/leave?

The Federal Cabinet
The Chairman Senate
The Secretary Establishment Division✔️
The Chief Justice of Pakistan

Correct Answer Logic:

The proviso to Rule 5(1)(i) specifically states that where the authority is the President or Prime Minister these powers shall be exercised by the Secretary Establishment Division.

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Islamic Studies QUESTION #7891

Question 2237

How long did the caliphate of Hazrat Usman (RA) last?

6 years
8 years
10 years
12 years✔️

Correct Answer Logic:

The caliphate of Hazrat Usman (RA) lasted for 12 years (644-656 CE). During his reign, he standardized the Quran by preparing official copies and distributing them throughout the Muslim world. He was the third Caliph of Islam and was martyred in 656 CE.

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