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Reduction of formaldehyde ($HCHO$) by adding $H_2$ gives methanol ($CH_3OH$): $HCHO + H_2 \rightarrow CH_3OH$. Reduction of an aldehyde gives a primary alcohol.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3293

Question 3264

'Cider' and 'Wine' are products of fermentation involving which microbe?

Bacteria
Yeast✔️
Virus
Algae

Correct Answer Logic:

Yeasts ferment sugars into ethanol and $CO_2$.

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Accounting & Finance QUESTION #6203

Question 3265

How does 'Depreciation' impact a firm's cash flow?

It reduces cash flow because it is an expense.
It has no impact since it is a non-cash item.
It increases cash flow by reducing taxable income (tax shield).✔️
It increases the amount of dividends paid.

Correct Answer Logic:

By reducing taxable income, it lowers the tax bill, which is a cash outflow [cite: 21, 22].

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Accounting & Finance QUESTION #9664

Question 3266

Which of the following items appears on the DEBIT side of the Branch Account under the Debtor System in Head Office books?

Closing stock at branch
Cash received from branch
Opening liabilities at branch✔️
Goods returned by branch to HO

Correct Answer Logic:

Opening liabilities are debited to the Branch Account (they reduce the net opening capital of the branch from the HO perspective). Opening assets are also debited. Closing assets and all cash/goods received from the branch are credited.

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English QUESTION #2654

Question 3267

Change to active: 'Rules should be followed.'

One should follow rules.✔️
Follow the rules.
Rules must be followed.
You following rules.

Correct Answer Logic:

The modal passive 'should be followed' is converted back to 'should follow' using an indefinite subject 'One'.

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Physics QUESTION #7073

Question 3268

Radioactive substance $A$ has a half-life $T$ and transforms into substance $B$. At $t = 0$, the sample contains only $A$. At a specific time $t$, the ratio of the quantity of $B$ to $A$ is found to be $0.3$. Which of the following expressions correctly defines $t$ in terms of $T$?

$t = \frac{T}{\log(1.3)}$
$t = \frac{T}{2} \frac{\log 2}{\log 1.3}$
$t = T \frac{\log 1.3}{\log 2}$✔️
$t = T \log(1.3)$

Correct Answer Logic:

Let $N_A$ be the remaining nuclei of $A$ and $N_B$ be the produced nuclei of $B$. $N_B/N_A = 0.3 \implies (N_0 - N_A)/N_A = 0.3$. This gives $N_0/N_A = 1.3$, or $N_A = N_0/1.3$. Using the decay law $N = N_0 2^{-t/T}$, we get $1/1.3 = 2^{-t/T}$. Taking logs: $\log(1.3) = (t/T)\log 2$. Solving for $t$ gives $t = T \frac{\log 1.3}{\log 2}$.

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Dairy Food Science and Technology QUESTION #5961

Question 3269

The lactose content of milk accounts for approximately what percentage of its caloric content?

$5\%$
$27\text{–}30\%$
$45\text{–}50\%$✔️
$70\%$

Correct Answer Logic:

Lactose ($\approx 4.8\%$ in milk, $4\;\text{kcal/g}$) provides approximately $28\text{–}30\%$ of total milk calories. Whole milk energy: fat ($3.5\% \times 9\;\text{kcal/g} \approx 3.2\;\text{kcal/100 mL}$), protein ($3.2\% \times 4 \approx 1.3\;\text{kcal}$), lactose ($4.8\% \times 4 \approx 1.9\;\text{kcal}$). Lactose share $= \frac{1.9}{6.4} \approx 30\%$.

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Dairy Food Science and Technology QUESTION #5999

Question 3270

The 'rebodying' phenomenon in sweetened condensed milk during storage refers to:

Microbial growth causing ropiness
Viscosity increase due to continued protein aggregation and possibly lactose crystallization over time✔️
Fat phase separation forming a cream layer
Browning due to Maillard reaction

Correct Answer Logic:

Rebodying (age thickening) in SCM is a defect causing viscosity increase during storage. It results from progressive protein aggregation (casein interactions) and possibly early-stage $\alpha$-lactose monohydrate crystallization affecting protein hydration. It is controlled by proper heat treatment prior to canning and controlled storage temperature.

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Accounting & Finance QUESTION #6184

Question 3271

A firm has a Current Ratio of $1.31$ and a Quick Ratio of $0.53$. If the firm utilizes cash to pay off a portion of its Accounts Payable, what is the impact on these ratios?

Both ratios will decrease.
Both ratios will increase.✔️
The Current Ratio will increase, but the Quick Ratio will decrease.
Both ratios will remain unchanged.

Correct Answer Logic:

If the Current Ratio is greater than $1$, paying off debt with cash increases the ratio because the numerator and denominator decrease by the same amount, moving the ratio further from $1$ [cite: 36, 38].

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Agronomy QUESTION #2108

Question 3272

Agroecology as a scientific discipline and practice differs from conventional agronomy in that:

Agroecology advocates for higher synthetic input use to maximize ecosystem services
Agroecology applies ecological concepts and principles to the design and management of agricultural systems — emphasizing biodiversity, nutrient cycling, biological regulation of pests, and ecosystem resilience over external input-driven production, while also addressing social equity and food sovereignty dimensions✔️
Agroecology is exclusively applicable to subsistence farming systems in developing countries
Agroecology rejects all scientific research and relies entirely on traditional indigenous knowledge

Correct Answer Logic:

Agroecology (Altieri, Gliessman) integrates ecology, agronomy, and social sciences to design farming systems that mimic natural ecosystem functioning — maximizing internal biological processes (BNF, natural pest regulation, nutrient cycling through diversity) to reduce dependence on external inputs. It spans three dimensions: science (ecological principles), practice (farming methods), and movement (food systems transformation and farmer empowerment).

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Electrical Engineering QUESTION #2147

Question 3273

Which Maxwell’s equation was modified by Maxwell himself to include the displacement current term $\frac{\partial \mathbf{D}}{\partial t}$?

Gauss's Law for Electricity
Gauss's Law for Magnetism
Faraday's Law of Induction
Ampere’s Circuital Law✔️

Correct Answer Logic:

Maxwell added $\frac{\partial \mathbf{D}}{\partial t}$ to Ampere's Law ($\nabla \times \mathbf{H} = \mathbf{J} + \frac{\partial \mathbf{D}}{\partial t}$) to satisfy the continuity equation for time-varying fields.

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Accounting & Finance QUESTION #6123

Question 3274

Factory data: Budgeted production 10,000 units; Budgeted overheads $50,000; Actual overheads $60,000; Under-absorption $5,000. What was the actual production?

9,000 units✔️
9,167 units
11,000 units
13,000 units

Correct Answer Logic:

Option A (9,000 units) is correct.

OAR = $50,000 ÷ 10,000 = $5 per unit

Under-absorption = Actual overheads − Absorbed overheads

$5,000 = $60,000 − (Actual units × $5)

Actual units = $55,000 ÷ $5 = 9,000 units

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Medicinal Chemistry and Biopharmaceutics QUESTION #3828

Question 3275

Within what temperature range should total parenteral nutrition (TPN) solutions be stored to maintain stability and prevent microbial growth?

$1^\circ\text{C}$ and $4^\circ\text{C}$
$2^\circ\text{C}$ and $8^\circ\text{C}$✔️
$15^\circ\text{C}$ and $20^\circ\text{C}$
$25^\circ\text{C}$ and $35^\circ\text{C}$

Correct Answer Logic:

TPN solutions should be stored refrigerated between $2^\circ\text{C}$ and $8^\circ\text{C}$ according to guidelines, but practically $1^\circ\text{C}$–$4^\circ\text{C}$ is the accepted optimal refrigeration range for these preparations.

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Egnlish QUESTION #706

Question 3276

In "The Waste Land," T.S. Eliot uses the metaphor of "Dry Stone" to represent:

Strength
Spiritual barrenness✔️
Stability
Traditional values

Correct Answer Logic:

The "dry stone" gives no sound of water, symbolizing the spiritual drought of the modern world.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3441

Question 3277

'RBCs' (Red Blood Cells) rely exclusively on which pathway for energy?

Beta-oxidation
Glycolysis✔️
Krebs Cycle
Electron Transport Chain

Correct Answer Logic:

RBCs lack mitochondria and must use anaerobic glycolysis.

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Physics and Math QUESTION #788

Question 3278

A dice is rolled, what is the probability of getting a number greater than 4?

$\dfrac{1}{4}$
$\dfrac{1}{3}$✔️
$\dfrac{1}{2}$
$\dfrac{1}{6}$

Correct Answer Logic:

Numbers greater than 4: {5, 6} → 2 outcomes out of 6. Probability $= \dfrac{2}{6} = \dfrac{1}{3}$.

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Tourism & Hospitality Management QUESTION #1596

Question 3279

The Pakistan Tourist Destinations course requires students to develop which practical skill through field visits?

Financial analysis of tourism businesses
Preparation of a visit report documenting tourist destinations observed✔️
Management of hotel front office operations
Designing a tourism marketing campaign

Correct Answer Logic:

The Pakistan Tourist Destinations course includes a practical component (Module 7) requiring students to conduct Visits to tourist destinations and prepare a visit report — applying classroom knowledge of tourist resources, facilities, and circuits to real-world observation and documentation.

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English QUESTION #8308

Question 3280

I insisted _______ my fee paid.

To have
On having✔️
In having
To having

Correct Answer Logic:

'Insisted on' is the correct phrasal verb pattern.

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