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Bio-Technology QUESTION #10598

Single-cell oils (SCOs) accumulate in oleaginous microorganisms when:

Nitrogen is in excess relative to carbon in the growth medium
The carbon:nitrogen (C:N) ratio is high and nitrogen becomes limiting✔️
The culture is grown under strictly anaerobic conditions
Dissolved oxygen is maintained above 90% air saturation throughout

Correct Answer Logic:

Oleaginous microorganisms (e.g. Mortierella alpina, Thraustochytrids) accumulate lipids (>20% dry wt) when the C:N ratio is high — i.e. nitrogen is exhausted but carbon (glucose) remains available. Nitrogen limitation inactivates isocitrate dehydrogenase (via AMP depletion), causing citrate accumulation in the mitochondria. Citrate is exported to the cytoplasm and cleaved by ATP-citrate lyase (ACL) to supply acetyl-CoA for de novo fatty acid synthesis.

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General Knowledge QUESTION #8890

Question 4002

The Muslim country with the largest population is:

Bangladesh
Pakistan
Malaysia
Indonesia✔️

Correct Answer Logic:

Indonesia has the largest Muslim population.

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English Literature QUESTION #10705

Question 4003

In which novel did D. H. Lawrence deal with the psychological phenomenon known as the "Oedipus Complex"?

Lady Chatterley's Lover
Sons and Lovers✔️
The Trespasser
The Boy in the Bush

Correct Answer Logic:

Sons and Lovers (1913) is D. H. Lawrence's semi-autobiographical novel that explores the Oedipus Complex — Paul Morel's intense, consuming relationship with his mother Gertrude, which prevents him from forming healthy romantic relationships with other women. The novel is widely considered a classic study of Oedipal dynamics in literature, drawing on Freudian concepts of maternal attachment and sexual development.

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Psychology QUESTION #9727

Question 4004

The inability to form new long-term memories following brain injury or disease, while retaining older memories, is called:

Retrograde amnesia
Proactive interference
Anterograde amnesia✔️
Repression

Correct Answer Logic:

Anterograde amnesia is the inability to form new long-term memories after the onset of brain damage, while memories formed before the damage remain relatively intact. It is classically associated with damage to the hippocampus. The famous patient H.M. (Henry Molaison) exemplified anterograde amnesia after bilateral hippocampal removal.

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Mathematics QUESTION #1305

Question 4005

The Trapezoidal Rule for $n$ equally spaced points with step size $h$ is:

$\dfrac{h}{2}(y_0+2y_1+\cdots+2y_{n-1}+y_n)$✔️
$\dfrac{h}{3}(y_0+4y_1+2y_2+\cdots+y_n)$
$h(y_0+y_1+\cdots+y_n)$
$\dfrac{h}{2}(y_0+y_n)$

Correct Answer Logic:

The Trapezoidal Rule approximates $\int_a^b f(x)\,dx\approx\dfrac{h}{2}[f(x_0)+2f(x_1)+2f(x_2)+\cdots+2f(x_{n-1})+f(x_n)]$. This gives the first and last function values weight 1 and all interior values weight 2.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3010

Question 4006

A 'Deflocculated' suspension is characterized by:

Fast sedimentation
Hard cake formation at the bottom✔️
Large visible aggregates
Ease of redispersibility

Correct Answer Logic:

In deflocculated systems, particles settle slowly but form a hard, non-redispersible cake.

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General Knowledge QUESTION #8273

Question 4007

In MS Word, what is the function of the keyboard shortcut Ctrl + N?

Save Document
Open Document
Open a new document✔️
Close Document

Correct Answer Logic:

Ctrl + N creates a new blank document.

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Physics QUESTION #1050

Question 4008

A balloon of surface tension $S$, outlet area $A$, gas density $\rho$, radius $R$. Gas flows out: radius changes from $R$ to 0 in time $T$. Speed $v(r)\propto r^a$ and $T\propto S^\alpha A^\beta \rho^\gamma R^\delta$. Then:

$a=-\frac{1}{2},\alpha=-\frac{1}{2},\beta=-1,\gamma=\frac{1}{2},\delta=\frac{7}{2}$✔️
$a=\frac{1}{2},\alpha=\frac{1}{2},\beta=-\frac{1}{2},\gamma=\frac{1}{2},\delta=\frac{7}{2}$
$a=\frac{1}{2},\alpha=\frac{1}{2},\beta=-1,\gamma=+1,\delta=\frac{3}{2}$
$a=-\frac{1}{2},\alpha=-\frac{1}{2},\beta=-1,\gamma=-\frac{1}{2},\delta=\frac{5}{2}$

Correct Answer Logic:

Pressure inside balloon $=\frac{4S}{r}$. By Bernoulli: $\frac{4S}{r}=\frac{1}{2}\rho v^2\Rightarrow v=\sqrt{\frac{8S}{\rho r}}\propto r^{-1/2}$. So $a=-\frac{1}{2}$. For time: $T\propto \frac{R}{v(R)}\cdot f(geometry)$. Dimensional analysis of $T\propto S^\alpha A^\beta\rho^\gamma R^\delta$ with $[T]=s$ gives $\alpha=-1/2, \beta=-1, \gamma=1/2, \delta=7/2$.

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Quantitative Reasoning QUESTION #8152

Question 4009

Congress faces serious difficulty reaching consensus on energy policy, primarily because the policy objectives of its various members rest on such _______ assumptions.
(Select the best word. Note: two words produce sentences alike in meaning — choose the most accurate.)

disparate✔️
commonplace
fundamental
trite

Correct Answer Logic:

The reason consensus is hard is that members' assumptions are very different from each other. Disparate means fundamentally different and incompatible. 'Divergent' is the synonym pair in the original. 'Commonplace' means ordinary — that wouldn't cause difficulty. 'Fundamental' means basic, not incompatible. 'Trite' means overused/dull, irrelevant to the argument.

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Psychology QUESTION #9926

Question 4010

What are the problems associated with low birth weight?

Susceptibility to infection
Difficulty maintaining body temperature
Difficulty with breathing, sucking, swallowing, and digestion
All of the above✔️

Correct Answer Logic:

Low birth weight (LBW) infants face multiple serious health risks: infection susceptibility (weak immune system), thermal instability (underdeveloped temperature regulation), and breathing/sucking/swallowing/digestion difficulties. All are documented complications.

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Mathematics QUESTION #6041

Question 4011

If $\alpha$ and $\beta$ are the two roots of $x^2+2x+2=0$, find $\alpha^{15}+\beta^{15}$.

-256✔️
512
-512
256

Correct Answer Logic:

Roots: $x=\frac{-2\pm\sqrt{4-8}}{2}=-1\pm i$. So $\alpha=-1+i, \beta=-1-i$.

In polar form: $|\alpha|=\sqrt{2}$, $\arg(\alpha)=\frac{3\pi}{4}$. So $\alpha=\sqrt{2}\,e^{i3\pi/4}$.

$\alpha^{15}=(\sqrt{2})^{15}e^{i\cdot45\pi/4}=2^{15/2}e^{i\pi/4}$ (since $45\pi/4=11\pi+\pi/4$, so $e^{i45\pi/4}=e^{i\pi/4}\cdot(-1)^{11}=-e^{i\pi/4}$... careful: $45/4=11.25$, $11\pi+\pi/4$, $e^{i(11\pi+\pi/4)}=e^{i\pi}\cdot e^{i\pi/4} \cdot (-1)^{10}... $)

More cleanly: $\alpha^{15}+\beta^{15}=2\,\text{Re}(\alpha^{15})=2(\sqrt{2})^{15}\cos\!\left(\frac{45\pi}{4}\right)$. Since $\cos(45\pi/4)=\cos(\pi/4+11\pi)=-\cos(\pi/4)=-\frac{1}{\sqrt{2}}$: $=2\cdot2^{15/2}\cdot(-\frac{1}{\sqrt{2}})=-2^{15/2+1-1/2}=-2^8=-\mathbf{256}$

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Verbal Reasoning QUESTION #8156

Question 4012

Given that $0 < x < y < 1$, compare the two quantities:

Quantity A: $1 - y$

Quantity B: $y - x$

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

Correct Answer Logic:

We know $0 < x < y < 1$. Let's test specific values to see if the relationship is fixed.

Example 1: $x = 0.1,\ y = 0.2$.
Quantity A: $1 - 0.2 = 0.8$. Quantity B: $0.2 - 0.1 = 0.1$. A > B.

Example 2: $x = 0.1,\ y = 0.9$.
Quantity A: $1 - 0.9 = 0.1$. Quantity B: $0.9 - 0.1 = 0.8$. B > A.

Since the relationship changes depending on the values of $x$ and $y$, it cannot be determined from the information given.

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Chemistry QUESTION #1108

Question 4013

Match List I (Ion) with List II (Group in Cation Analysis): A. Co$^{2+}$ B. Mg$^{2+}$ C. Pb$^{2+}$ D. Al$^{3+}$; with I. Group-I II. Group-III III. Group-IV IV. Group-VI

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

Correct Answer Logic:

In qualitative analysis: Pb$^{2+}$ → Group I (precipitates as PbCl$_2$ with HCl) but also appears partially in Group II. Co$^{2+}$ → Group III (precipitates as CoS in NH$_4$OH/H$_2$S). Al$^{3+}$ → Group III (Al(OH)$_3$ precipitate). Mg$^{2+}$ → Group VI (last group, Mg(OH)$_2$ with NaOH). Pb$^{2+}$ in Group IV (PbS with H$_2$S in dilute HCl). Matching: A-III, B-IV (Mg=Group VI? or IV), C-I (Pb=Group I), D-III... Revised: A(Co$^{2+}$)=III, B(Mg$^{2+}$)=IV (Group IV uses (NH$_4$)$_2$CO$_3$: no, Mg is Group V or VI). Standard: A-III, B-IV, C-I, D-II — option (4).

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English Literature QUESTION #10698

Question 4014

How many plays did William Shakespeare write in total?

36
37
38✔️
39

Correct Answer Logic:

The scholarly consensus is that Shakespeare wrote 38 plays, though some scholars count 37 (excluding The Two Noble Kinsmen, co-written with John Fletcher, or Edward III). The First Folio (1623) collected 36 plays. With Pericles and The Two Noble Kinsmen added, the accepted total is 38 or 39. Most standard literary references cite 38.

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Nursing QUESTION #9158

Question 4015

In nursing education, Bloom's Taxonomy of educational objectives classifies learning into three domains. The psychomotor domain primarily deals with:

Recall of factual information
Emotional responses and values
Physical skills and motor activities✔️
Problem-solving and analysis

Correct Answer Logic:

Bloom's Taxonomy classifies educational objectives into three domains:

Cognitive domain: Knowledge, comprehension, application, analysis, synthesis, evaluation
Affective domain: Attitudes, values, emotional responses
Psychomotor domain: Physical and motor skills — e.g., performing injections, wound dressing, CPR

In nursing education, the psychomotor domain is critical for clinical skill development. A Head Nurse supervising nursing students or staff must assess all three domains for comprehensive competency evaluation.

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Tourism & Hospitality Management QUESTION #1583

Question 4016

Which of the following hill stations is specifically listed as a case study destination in the Pakistan Tourist Destinations course?

Nathiagali and Abbottabad
Swat Valley, Hunza Valley, and Galliyat✔️
Skardu, Gilgit, and Chitral
Murree, Ziarat, and Naran only

Correct Answer Logic:

The Pakistan Tourist Destinations course specifically identifies Swat Valley, Hunza Valley, and Galliyat as case study destinations for in-depth analysis of hill station attractions and their environments, beyond simply listing Murree, Ziarat, Naran, Kaghan, and Galliyat.

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Verbal Reasoning QUESTION #8164

Question 4017

If $2x = 3y = 4z = 20$, what is the value of $12xyz$?

$16{,}000$
$8{,}000$
$4{,}000$✔️
$800$

Correct Answer Logic:

From $2x = 20$: $x = 10$.

From $3y = 20$: $y = \dfrac{20}{3}$.

From $4z = 20$: $z = 5$.

Now compute $12xyz$:

$12 \times 10 \times \dfrac{20}{3} \times 5 = 12 \times \dfrac{1000}{3} = \dfrac{12000}{3} = 4{,}000$

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Accounting & Finance QUESTION #6104

Question 4018

Motor vehicles costing $530,000 were depreciated at 10% straight-line instead of the correct 25%. After incorrect entries: Motor vehicles at cost $530,000; Provision for depreciation $53,000. Which journal entries will correct the error?

Debit: Provision for depreciation $79,500 | Credit: Statement of profit or loss $79,500
Debit: Provision for depreciation $132,500 | Credit: Statement of profit or loss $132,500
Debit: Statement of profit or loss $79,500 | Credit: Provision for depreciation $79,500✔️
Debit: Statement of profit or loss $132,500 | Credit: Provision for depreciation $132,500

Correct Answer Logic:

Option C is correct.

Correct depreciation = $530,000 × 25% = $132,500

Already charged = $530,000 × 10% = $53,000

Additional needed = $132,500 − $53,000 = $79,500

Entry: Debit Statement of profit or loss $79,500 | Credit Provision for depreciation $79,500

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Geography QUESTION #1248

Question 4019

Fossils are never found in:

Shale
Granite✔️
Sandstone
None of these

Correct Answer Logic:

Fossils are only found in sedimentary rocks (such as shale, sandstone, limestone) because they form from the gradual burial and compression of organic remains in sediments. Granite is an igneous rock formed from the cooling of magma at high temperatures and pressures — any organic material would be destroyed under such conditions. Therefore fossils are never found in granite or other igneous/metamorphic rocks.

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Social Studies QUESTION #10075

Question 4020

A theoretical perspective that emphasizes balance and order within society is known as:

Holism
Structuralism
Structural Functionalism✔️
None of these

Correct Answer Logic:

Structural Functionalism views society as a system of interdependent parts working together to maintain stability and order.

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