Reading Mode - Questions

Physics QUESTION #4396

In an ideal transformer, if the primary voltage is doubled and the turns ratio remains the same, what happens to the secondary current?

Doubles✔️
Halves
Remains the same
Becomes four times

Correct Answer Logic:

Transformer equation: $\dfrac{V_s}{V_p} = \dfrac{N_s}{N_p}$. If $V_p$ doubles and turns ratio stays same, $V_s$ doubles. Power $P = V_p I_p = V_s I_s$. If $V_s$ doubles and power is constant, $I_s$ halves. However, if input power doubles (due to doubled $V_p$), $I_s$ doubles. Per answer key: secondary current doubles.

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Dairy Food Science and Technology QUESTION #5957

Question 922

In dairy plant design, 'pasteurized product contamination by raw milk' in plate heat exchangers (PHE) is prevented by:

Using thicker gaskets between raw and pasteurized milk channels
Designing the regeneration section with higher pressure on the pasteurized side ($\geq 14\;\text{kPa}$ or $2\;\text{psi}$ above raw milk pressure) than the raw milk side✔️
Using separate PHEs for raw and pasteurized milk
Monitoring conductivity of milk streams

Correct Answer Logic:

In HTST PHE regeneration sections, regulations require that pasteurized milk pressure exceed raw milk pressure by $\geq 14\;\text{kPa}$ ($2\;\text{psi}$), ensuring that any leakage is from pasteurized to raw (not raw to pasteurized), preventing contamination of the pasteurized product stream.

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General Knowledge QUESTION #268

Question 923

An extraordinary meeting of OIC Foreign Ministers on Palestine was held in:

Bahrain
Saudi Arabia✔️
Qatar
None of these

Correct Answer Logic:

The meeting was held in Jeddah, Saudi Arabia, in October 2023.+1

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General Abilities QUESTION #2884

Question 924

What is the duplicate ratio of $3:4$?

9:16✔️
6:8
$\sqrt{3}:2$
27:64

Correct Answer Logic:

The duplicate ratio is the ratio of their squares: $3^2 : 4^2 = 9:16$.

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Boilers Mechanical Engineering QUESTION #2434

Question 925

The net radiation heat exchange rate between a gray surface (emissivity $\varepsilon$, area $A$, temperature $T_s$) and a large enclosure (temperature $T_{cav}$) is:

$q_{rad} = \sigma A(T_s^4 - T_{cav}^4)$ (blackbody only)
$q_{rad} = \varepsilon\sigma A(T_s^4 - T_{cav}^4)$✔️
$q_{rad} = h_r A(T_s^2 - T_{cav}^2)$
$q_{rad} = \varepsilon\sigma A(T_s - T_{cav})^4$

Correct Answer Logic:

Net radiation from a gray surface in a large enclosure: $q_{rad}=\varepsilon\sigma A(T_s^4-T_{cav}^4)$. This can be linearized as $q_{rad}=h_r A(T_s-T_{cav})$.

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Journalism / Mass Communication QUESTION #6353

Question 926

Harold Lasswell's (1948) formula of communication consists of five analytical components. Which sequence below correctly maps each component to its corresponding area of research?

Who → Content Research; Says What → Control Research; Channel → Audience Research; To Whom → Medium Research; Effect → Effects Research
Who → Control Research; Says What → Content Research; In What Channel → Medium Research; To Whom → Audience Research; With What Effect → Effects Research✔️
Who → Effects Research; Says What → Medium Research; Channel → Control Research; To Whom → Content Research; Effect → Audience Research
Who → Audience Research; Says What → Effects Research; Channel → Content Research; To Whom → Control Research; Effect → Medium Research

Correct Answer Logic:

Lasswell's formula is one of the most widely cited early models of mass communication. The sociologist Harold Lasswell (1948) proposed analysing mass media by asking five questions, each of which corresponds to a distinct field of scholarly inquiry:

Who? → Control Research (who owns, controls, and regulates media)
Says What? → Content Research (what messages are being sent)
In What Channel? → Medium Research (the technology used to transmit)
To Whom? → Audience Research (who is receiving the message)
With What Effect? → Effects Research (what impact does the message have)

Lasswell was primarily concerned with mass communication and propaganda, so his model is designed to direct researchers toward the kind of systematic inquiry needed to understand and evaluate media power.

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Chemistry QUESTION #1099

Question 927

Match List I (Vitamin) with List II (Deficiency disease): A. Vitamin B$_{12}$ B. Vitamin D C. Vitamin B$_2$ D. Vitamin B$_6$; with I. Cheilosis II. Convulsions III. Rickets IV. Pernicious anaemia

A-II, B-III, C-I, D-IV
A-IV, B-III, C-II, D-I
A-I, B-III, C-II, D-IV
A-IV, B-III, C-I, D-II✔️

Correct Answer Logic:

Vitamin B$_{12}$ deficiency → Pernicious anaemia (IV). Vitamin D deficiency → Rickets (III). Vitamin B$_2$ (riboflavin) deficiency → Cheilosis (cracking of lips) (I). Vitamin B$_6$ (pyridoxine) deficiency → Convulsions (II). Matching: A-IV, B-III, C-I, D-II.

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Tourism & Hospitality Management QUESTION #1651

Question 928

The Human Resource Management course covers 'performance management and appraisal.' According to the curriculum, which of the following is identified as a legal concern in performance appraisal systems?

The language used in performance review forms
Legal issues associated with performance appraisals — including discrimination, bias, documentation requirements, and the need for appraisal systems to be defensible under employment law✔️
The color-coding system used in performance rating scales
The frequency of performance reviews per calendar year

Correct Answer Logic:

Module 5 of the HRM course (Performance Management and Appraisal) specifically addresses: how to define and measure performance, legal issues associated with performance appraisals (including the risk of discriminatory or biased appraisals and documentation requirements that can withstand legal scrutiny), designing an appraisal system, and methods of delivering performance feedback.

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Security Measures to Maintain Law and Order QUESTION #949

Question 929

What is 'Cyber Security' in the context of airport order?

Locking the server room
Protecting digital systems and networks✔️
Fixing broken computers
Monitoring staff emails

Correct Answer Logic:

Protecting navigation, communication, and security systems from digital attacks is vital for maintaining airport order.

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Accounting & Finance QUESTION #6225

Question 930

The assertion that 'an asset or liability pertains to the entity at a given date' relates to which audit area?

Existence
Completeness
Rights and Obligations✔️
Valuation

Correct Answer Logic:

'Rights and Obligations' refers to the assertion that the enterprise has ownership or legal rights to the assets and liabilities recorded.

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Reading and Writing (Module-1) QUESTION #5347

Question 931

A group of paleontologists recently discovered an extensive fossil site near Gulgong, Australia. The specimens are in such excellent condition that the researchers have successfully managed to ______ detailed data regarding the prehistoric organisms, including their coloration and social behaviors. Which choice completes the text with the most logical and precise word or phrase?

occupy
hoard
reserve
obtain✔️

Correct Answer Logic:

The text explains that the researchers were able to get information from the fossils, so 'obtain' is the most appropriate word.

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Planning QUESTION #4954

Question 932

Which data collection method is most suitable for Origin-Destination surveys?

Household interviews✔️
Traffic counts only
Aerial photography
Census data

Correct Answer Logic:

Household interviews (or roadside interviews) are most effective for O-D surveys as they directly capture trip origins, destinations, purposes, and travel patterns from actual travelers.

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Ability / HR / Governance / Special Education QUESTION #1859

Question 933

What type of appointment is made for vacancies occurring for less than six months under Rule 8-B(4)?

Acting charge appointment
Regular appointment
Current charge appointment✔️
Ad hoc appointment

Correct Answer Logic:

Rule 8-B(4) states against vacancies occurring for less than six months, current charge appointment may be made according to orders issued from time to time.

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Accounting & Finance QUESTION #6103

Question 934

Which statements about capital income and revenue income are correct?

Revenue income includes amounts received from renting out part of business premises.
Capital income includes amounts received from the sale of non-current assets.
Capital income includes loans taken by a business.

1, 2 and 3
1 and 2 only✔️
1 and 3 only
2 and 3 only

Correct Answer Logic:

Option B (1 and 2 only) is correct.

Statement 1 (True): Rental income is regular and recurring — revenue income.
Statement 2 (True): Proceeds from selling a non-current asset are a one-off receipt — capital income.
Statement 3 (False): Loans are liabilities, not capital income.

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Verbal Reasoning QUESTION #8101

Question 935

The volume of a cube is 64.

Compare:

Column A: The area of the base of the cube

Column B: $32$

Column A is greater
Column B is greater✔️
The two quantities are equal
The relationship cannot be determined from the information given

Correct Answer Logic:

For a cube with volume $V = s^3 = 64$, the side length is $s = \sqrt[3]{64} = 4$.

The base of a cube is a square, so its area $= s^2 = 4^2 = 16$.

Column A = 16, Column B = 32.

Since $16 < 32$, Column B is greater.

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Chemistry QUESTION #7809

Question 936

Which aldehyde is most reactive toward nucleophilic addition?

Acetaldehyde
Butyraldehyde
Formaldehyde✔️
Propionaldehyde

Correct Answer Logic:

Formaldehyde (HCHO) has no alkyl group to donate electrons, so the carbonyl carbon is most electrophilic (least steric hindrance, smallest +I effect).

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Egnlish QUESTION #694

Question 937

The "Wessex" novels were written by:

Charles Dickens
Thomas Hardy✔️
George Eliot
None of these

Correct Answer Logic:

Thomas Hardy set most of his major novels in the semi-fictional region of Wessex.

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Chemistry QUESTION #7173

Question 938

Considering the ground state energy of a hydrogen atom is $-13.6 \text{ eV}$, what would be the energy of the second excited state for a $He^{+}$ ion in eV?

$-54.4$
$-3.4$
$-6.04$✔️
$-27.2$

Correct Answer Logic:

For hydrogen-like species, $E_{n} = -13.6 \frac{Z^{2}}{n^{2}} \text{ eV}$.

For $He^{+}$, atomic number $Z = 2$.
The second excited state corresponds to $n = 3$.
$E_{3} = -13.6 \times \frac{2^{2}}{3^{2}} = -13.6 \times \frac{4}{9}$
$E_{3} \approx -6.04 \text{ eV}$

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Biology QUESTION #514

Question 939

When your finger accidentally gets caught in a door, the pain message is sent to your brain through __________.

Homeostasis
Sensory receptors✔️
Caffeine
The medulla

Correct Answer Logic:

Sensory receptors transmit pain signals

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Education QUESTION #6790

Question 940

A teacher writes a completion item: 'The ___ and ___ are the two major branches of government in Pakistan.' A student fills in 'judiciary' for the first blank and 'executive' for the second blank. Given the actual answer is 'legislature and executive,' how many marks should the teacher award, and what construction rule was violated?

Full marks; the student demonstrated sufficient knowledge
Partial credit is ambiguous because this item violates the rule against using too many blanks — when multiple blanks appear, scoring becomes unreliable and responses are difficult to evaluate unambiguously✔️
Zero marks because the judiciary is incorrect
Full marks because executive is correct

Correct Answer Logic:

A key rule for completion items states: when using blanks, do not include too many blanks in a single item. Multiple blanks create partial-credit ambiguity (one correct, one incorrect answer in a two-blank item), reduce item clarity, and make scoring inconsistent. This item should have been split into two separate items or rewritten as a direct question.

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