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Dairy Food Science and Technology QUESTION #5930

The 'Log Reduction' concept in pasteurization states that HTST ($72^{\circ}\text{C}/15\;\text{s}$) achieves a minimum log reduction of $Coxiella\;burnetii$ of:

5-log $(10^5\text{-fold})$✔️
6-log
3-log
8-log

Correct Answer Logic:

HTST pasteurization ($72^{\circ}\text{C}/15\;\text{s}$) is designed to achieve a minimum $5$-log ($100{,}000$-fold) reduction of $Coxiella\;burnetii$, the most heat-resistant non-spore-forming pathogen in milk and causative agent of Q fever.

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English QUESTION #2663

Question 1582

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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Accounting & Finance QUESTION #6079

Question 1583

The total of Konrad's purchases ledger balances was $57,400. Later, these errors were found:

Discount allowed overcast in cash book	$2,000
Returns outwards omitted in a supplier's account	$350
Payments to trade payables undercast in cash book	$137
Purchases journal overcast	$500

What is the corrected total of the trade payables balances?

$54,413
$54,913
$55,050
$57,050✔️

Correct Answer Logic:

Only errors affecting individual supplier accounts change the purchases ledger total.
1. Returns outwards omitted: $57,400 - $350 = $57,050.
The others (Discount allowed, payments undercast in cash book, journal overcast) affect the Control Account or other ledgers, but not the individual ledger balances until corrected there.

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Chemistry QUESTION #7188

Question 1584

Determine the oxidation states of Chromium ($Cr$) in the following three species respectively: $[Cr(C_{6}H_{6})_{2}]$, $[Cr(H_{2}O)_{6}]Cl_{3}$, and $K_{2}[Cr(CN)_{2}(O)_{2}(O_{2})(NH_{3})]$.

$+3, 0, and +6$✔️
$+3, 0, and +4$
$+3, +4, and +6$
$+3, +2, and +4$

Correct Answer Logic:

Calculation of oxidation states:

$[Cr(C_{6}H_{6})_{2}]$: Benzene is a neutral ligand, so $Cr$ is in $0$ oxidation state.
$[Cr(H_{2}O)_{6}]Cl_{3}$: $H_{2}O$ is neutral and there are 3 $Cl^{-}$ ions, so $x + 0 = +3 \Rightarrow x = +3$.
$K_{2}[Cr(CN)_{2}(O)_{2}(O_{2})(NH_{3})]$: $K$ is $+1$, $CN$ is $-1$, $O$ (oxo) is $-2$, $O_{2}$ (peroxo) is $-2$, and $NH_{3}$ is $0$. $2(+1) + x + 2(-1) + 2(-2) + (-2) + 0 = 0 \Rightarrow x = +6$.

[cite: 13]

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Math Physics Chemistry Biology QUESTION #803

Question 1585

The planar shape is made in which type of hybridization?

$sp^3$
$sp^2$✔️
$sp$
None

Correct Answer Logic:

$sp^2$ hybridization gives a trigonal planar geometry with bond angles of $120°$, as seen in molecules like $\text{BF}_3$ and ethene.

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Education QUESTION #6709

Question 1586

According to constructivist principles, learning is MOST effective when:

Teachers transmit knowledge clearly and systematically
Students actively construct understanding through experience and social interaction✔️
Content is broken into small sequential steps
Learning objectives are behaviorally specified

Correct Answer Logic:

Constructivism (Piaget, Vygotsky) posits that learners actively build knowledge through experiences and social interaction rather than passively receiving information. Learning involves constructing mental models, not just absorbing transmitted content.

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General Knowledge QUESTION #4681

Question 1587

Dan Quayle held which of the following positions?

Mexican footballer
American Politician✔️
Prime Minister of Brazil
Secretary General of NATO

Correct Answer Logic:

Dan Quayle served as the 44th Vice President of the United States under President George H.W. Bush (1989–1993).

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Urdu QUESTION #5121

Question 1588

ناول کس زبان کا لفظ ہے؟

اطالوی✔️
فارسی
انگریزی
ان میں سے کوئی نہیں

Correct Answer Logic:

ناول (Novel) لاطینی زبان کے لفظ Novellus سے ماخوذ ہے جس کے معنی نئے کے ہیں۔ یہ اطالوی سے انگریزی میں آیا۔

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Chemistry QUESTION #455

Question 1589

Which metal is commonly used to remove air bubbles from molten metals?

Aluminium✔️
Copper
Sodium
Calcium

Correct Answer Logic:

Aluminum is used for degassing molten metals

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Mathematics QUESTION #7437

Question 1590

The function $f: \mathbb{R} \to [-\frac{1}{2}, \frac{1}{2}]$ defined as $f(x) = \frac{x}{1+x^2}$, is:

Invertible✔️
injective but not surjective
surjective but not injective
neither injective nor surjective

Correct Answer Logic:

To check injectivity: if $f(x_1) = f(x_2)$, then $\frac{x_1}{1+x_1^2} = \frac{x_2}{1+x_2^2}$, which leads to $x_1(1+x_2^2) = x_2(1+x_1^2)$, simplifying to $x_1 - x_2 + x_1x_2^2 - x_2x_1^2 = 0$, or $(x_1-x_2)(1-x_1x_2) = 0$. For most real values this gives $x_1 = x_2$, confirming injectivity. For surjectivity, $f'(x) = \frac{1-x^2}{(1+x^2)^2}$. Maximum occurs at $x=1$ giving $f(1)=\frac{1}{2}$ and minimum at $x=-1$ giving $f(-1)=-\frac{1}{2}$. The range is exactly $[-\frac{1}{2}, \frac{1}{2}]$, confirming surjectivity. Therefore, f is bijective and hence invertible.

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Urdu QUESTION #5141

Question 1591

جوّاری کس کی کہانی ہے؟

غلام عباس✔️
احمد ندیم قاسمی
سلیم اختر
ان میں سے کوئی نہیں

Correct Answer Logic:

جوّاری غلام عباس کا مشہور افسانہ ہے۔

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Administration QUESTION #2939

Question 1592

What is the fundamental purpose of a "Balance Sheet" in financial accounting?

Recording the total revenue and expenses over a specific period
Showing a company's financial position (assets/liabilities) at a specific point in time✔️
Tracking the daily cash inflows and outflows of the business
None of these

Correct Answer Logic:

A balance sheet provides a snapshot of what a company owns (assets) and owes (liabilities) on a particular date.

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Planning QUESTION #4985

Question 1593

Which urban renewal approach emphasizes gradual improvement rather than wholesale clearance?

Urban redevelopment
Urban rehabilitation✔️
Urban conservation
Urban restructuring

Correct Answer Logic:

Urban rehabilitation involves incremental improvement and renovation of existing structures and infrastructure while retaining the urban fabric and community, contrasting with redevelopment's wholesale clearance and reconstruction approach that often displaces residents.

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Pakistan Affairs QUESTION #4677

Question 1594

The AFPAK policy was announced by the Obama administration in which year?

2008
2009✔️
2007
2010

Correct Answer Logic:

The AFPAK (Afghanistan-Pakistan) policy was announced by President Barack Obama in March 2009. It combined the US strategies for Afghanistan and Pakistan into a single regional policy framework.

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Urdu QUESTION #5068

Question 1595

تم مرے پاس ہوتے ہو گویا جب کوئی دوسرا نہیں ہوتا، یہ شعر کس کا ہے؟

غالب✔️
میر تقی میر
میر درد
ان میں سے کوئی نہیں

Correct Answer Logic:

یہ مشہور شعر مومن خان مومن کا ہے۔ تاہم بعض روایات میں اسے غالب سے بھی منسوب کیا جاتا ہے۔

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Biology QUESTION #4277

Question 1596

Which of the following is the correct pathway of a nerve impulse?

Receptors $\rightarrow$ CNS $\rightarrow$ Effectors✔️
Effectors $\rightarrow$ Receptors $\rightarrow$ CNS
CNS $\rightarrow$ Effectors $\rightarrow$ Receptors
Effectors $\rightarrow$ CNS $\rightarrow$ Receptors

Correct Answer Logic:

The correct pathway is: Receptors (detect stimulus) $\rightarrow$ CNS (processes information) $\rightarrow$ Effectors (produce response).

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MCQs Section QUESTION #4904

Question 1597

A new phenomena, which is visible at Managua's major intersections, are waves of vendors and beggars, which include many children and mob cars at the stoplights — _____.

A new phenomena, which is visible at Managua's major intersections, are waves of vendors and beggars, which include many children and
Visible at Managua's major intersections are waves of vendors and beggars with many children, new phenomena that
A new phenomenon visible at Managua's major intersections is waves of vendors and beggars, many of them children, who✔️
A wave of vendors and beggars, many of whom are children, are visible at Managua's major intersections, where they are a new phenomenon and

Correct Answer Logic:

Singular 'phenomenon' correctly pairs with singular verb 'is.' 'Many of them children' is a proper absolute phrase describing the beggars. Option A uses plural 'phenomena' with singular 'is' (subject-verb disagreement). Option B is structurally awkward. Option D creates disagreement between 'a wave…are.'

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Verbal Reasoning QUESTION #8170

Question 1598

If $n = 2^3$, what is the value of $n^n$?

$2^{6}$
$2^{11}$
$2^{18}$
$2^{24}$✔️

Correct Answer Logic:

$n = 2^3 = 8$.

$n^n = 8^8 = (2^3)^8 = 2^{3 \times 8} = 2^{24}$.

Answer: $\mathbf{2^{24}}$.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3638

Question 1599

'Maceration' is a process where the drug is:

Boiled in water
Soaked in a solvent for a specific period at room temperature✔️
Burned to ash
Crushed into a fine powder only

Correct Answer Logic:

Maceration is a passive extraction process.

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Planning QUESTION #4933

Question 1600

What is the primary advantage of pedestrianization in city centers?

Increased vehicle parking
Enhanced walkability and safety✔️
Reduced property values
Faster traffic flow

Correct Answer Logic:

Pedestrianization creates safer, more pleasant walking environments, reduces air pollution, encourages social interaction, and supports retail activities by making areas more accessible and attractive.

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