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Biology Zoology Botany QUESTION #1385

A cross between an individual with an unknown genotype and a homozygous recessive individual is called a:

Back cross
Test cross✔️
Monohybrid cross
Dihybrid cross

Correct Answer Logic:

A test cross involves crossing an organism with an unknown genotype (possibly homozygous dominant or heterozygous) with a homozygous recessive individual (e.g., aa). The phenotypic ratio of offspring reveals the unknown genotype. If all offspring show the dominant phenotype, the unknown parent is homozygous dominant; if a 1:1 ratio appears, it is heterozygous.

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Law QUESTION #9680

Question 782

Under Article 38, a confession made to a police officer:

Is admissible with corroboration
Is admissible if made voluntarily
Shall not be proved as against the accused✔️
Is admissible if witnessed by a Magistrate

Correct Answer Logic:

Article 38 categorically states that no confession made to a police officer shall be proved as against a person accused of any offence.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3128

Question 783

Which part of the brain is responsible for coordinating balance and fine motor skills?

Cerebrum
Cerebellum✔️
Medulla Oblongata
Hypothalamus

Correct Answer Logic:

The cerebellum (little brain) manages posture and coordination.

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Chemistry QUESTION #460

Question 784

__________ is colorless volatile liquid at room temperature.

HCl
HF✔️
HI
HBr

Correct Answer Logic:

HF is colorless volatile liquid at room temperature

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English QUESTION #8472

Question 785

Select the word OPPOSITE in meaning to: Fugitive

Immigrant
Refugee
Absconder
Captive✔️

Correct Answer Logic:

Fugitive means a person who flees; opposite is captive (one who is confined).

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Accounting & Finance QUESTION #6073

Question 786

What is the primary reason for a business to record a depreciation charge?

To ensure enough funds are available to replace the asset at the end of its life
To allocate the cost of the asset across the specific periods that benefit from its use
To ensure every asset is treated consistently based on the consistency principle

1 and 2
2 only✔️
2 and 3
3 only

Correct Answer Logic:

The core purpose of depreciation is the matching principle: charging the cost of a non-current asset to the periods it helps generate revenue. It does not guarantee cash for replacement, nor is it purely about the consistency concept itself.

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General Knowledge QUESTION #8663

Question 787

How many states are there in the United States of America?

51
49
52
None of above✔️

Correct Answer Logic:

There are 50 states (None of above).

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Urdu QUESTION #5187

Question 788

درست ضربِ مثل بتائیں۔

ایک ایک گیارہ
ایک ایک دو بارہ
ایک اور ایک گیارہ✔️
ان میں سے کوئی نہیں

Correct Answer Logic:

درست ضربِ مثل ہے: 'ایک اور ایک گیارہ' یعنی اتحاد سے طاقت بڑھ جاتی ہے۔

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English QUESTION #7875

Question 789

A person who sells goods and services is called a:

Consumer
Purchaser
Patron
Vendor✔️

Correct Answer Logic:

A 'vendor' is someone who sells goods or services. A 'consumer' or 'purchaser' buys them. A 'patron' is a regular customer or financial supporter.

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General Abilities QUESTION #4569

Question 790

Three oranges cost Rs.$5$. How much do $12$ oranges cost?

Rs.$15$
Rs.$17$
Rs.$20$✔️
Rs.$60$

Correct Answer Logic:

Set up proportion: $\frac{3}{5} = \frac{12}{x}$. Cross-multiply: $3x = 60$, so $x = 20$

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General Knowledge QUESTION #7710

Question 791

Which country was hit hardest by Cyclone Mocha?

India
Bangladesh
Myanmar✔️
None of these

Correct Answer Logic:

Cyclone Mocha struck Myanmar in May 2023 with devastating force, particularly affecting Rakhine State. It was one of the strongest cyclones to hit the region, causing significant destruction to infrastructure and displacing hundreds of thousands of people.

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Law QUESTION #5658

Question 792

Before trial the issues to be adjudicated upon must be clearly identified and articulated. Where an issue is contested it:

has to be adjudicated upon in the light of admissible evidence✔️
has to be deferred till the final determination of the case
has to be clubbed with other relevant issues
has to be dropped

Correct Answer Logic:

A contested issue must be adjudicated upon in the light of admissible evidence. Contested issues are resolved through evidence presented at trial — they are neither deferred nor dropped.

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Nursing QUESTION #9274

Question 793

A 4-year-old child is admitted with painless, gross hematuria. Ultrasound shows a large unilateral intrarenal mass. The child appears otherwise well. The MOST likely diagnosis in this age group is:

Neuroblastoma
Wilms' Tumor (Nephroblastoma)✔️
Polycystic kidney disease
Renal cell carcinoma

Correct Answer Logic:

Wilms' Tumor (Nephroblastoma) — most common renal malignancy in children (peak age 3–4 years).

Classic presentation:

Asymptomatic abdominal mass (discovered by parent/during bath)
Painless gross hematuria
Hypertension (renin secretion)
Child appears well (unlike neuroblastoma — ill-appearing)

Important physical examination note: DO NOT palpate the abdominal mass repeatedly — risk of tumor capsule rupture and metastatic seeding.

Associations:

WAGR syndrome: Wilms' + Aniridia + Genitourinary anomalies + mental Retardation (WT1 gene mutation)
Beckwith-Wiedemann syndrome
Hemihypertrophy

Staging and Treatment:

Stage	Description	Survival
I	Confined to kidney, completely resected	~95%
II–III	Regional extension	~85–90%
IV	Hematogenous mets (lung, liver)	~75%

Treatment: Nephrectomy + chemotherapy (actinomycin D, vincristine) ± radiotherapy. Wilms' has excellent prognosis — one of most curable solid tumors.

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Economics QUESTION #1708

Question 794

Among the interrelated structural, agronomic, and environmental stressors confronting Pakistan's food system, which is increasingly regarded by food security analysts as the single most existential threat?

Highly skewed feudal land ownership patterns limiting smallholder productivity
Low agricultural factor productivity — in yields per hectare and water use efficiency
Intensifying climate-induced water stress, erratic monsoons, and glacial melt disrupting irrigation✔️
None of these

Correct Answer Logic:

While land inequity and low productivity are longstanding constraints, climate change and water scarcity have emerged as the most acute and growing threat to Pakistan's food security. Pakistan is among the world's most water-stressed nations (per capita water availability has fallen below 1,000 m³ — the scarcity threshold). Glacial lake outburst floods (GLOFs), irregular monsoons, and rising temperatures threaten both crop yields and irrigation supplies in the Indus Basin.

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General Knowledge QUESTION #2610

Question 795

Which of the following is NOT a characteristic of 'Open Source' software?

The source code is freely available to view and modify
Other developers can distribute the software for free
The software cannot be used by commercial organizations under any circumstances✔️
Developers can share and improve the software collaboratively

Correct Answer Logic:

Open source means developers will let other developers share, modify, and distribute software for free. However, open source software CAN be used by commercial organizations — many businesses use Linux and other open source tools commercially. The restriction on commercial use is NOT a defining feature of open source.

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Chemistry QUESTION #427

Question 796

__________ serve as carriers of heredity from one generation to the other.

Lipids
Caseins
Formaldehydes
Nucleoproteins✔️

Correct Answer Logic:

DNA and RNA (nucleoproteins) carry genetic information

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General Abilities QUESTION #2829

Question 797

Simplify: $18 \div 6 \times 3 + 4^2 - 10$

3
15✔️
16
18

Correct Answer Logic:

Using BODMAS: First indices: $4^2 = 16$. Then division/multiplication left to right: $18 \div 6 = 3$, then $3 \times 3 = 9$. Then addition/subtraction: $9 + 16 - 10 = 15$.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3624

Question 798

An 'Allergen' is a substance that:

Causes a disease
Triggers an allergic reaction (hypersensitivity)✔️
Cures a headache
Increases energy

Correct Answer Logic:

Allergens stimulate the immune system to react excessively.

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Chemistry QUESTION #5535

Question 799

For a reaction $aA+bB\to cC+dD$, the plot of $\log k$ vs $\frac{1}{T}$ is a straight line with slope $= -10000\ K$. Given that the rate constant is $10^{-5}\ s^{-1}$ at 500 K, find the temperature (in K) at which the rate constant equals $10^{-4}\ s^{-1}$. (Round to nearest integer)

526 K
556 K✔️
600 K
1000 K

Correct Answer Logic:

Using the Arrhenius equation in log form: $\log\frac{k_2}{k_1} = \frac{-\text{slope}}{2.303}\left(\frac{1}{T_2}-\frac{1}{T_1}\right)\cdot2.303$. Since slope of $\log k$ vs $\frac{1}{T}$ is $-\frac{E_a}{2.303R} = -10000$, then $E_a = 10000\times2.303\times8.314$. Using $\log\frac{10^{-4}}{10^{-5}} = -10000\left(\frac{1}{T_2}-\frac{1}{500}\right)$: $1 = -10000\left(\frac{1}{T_2}-0.002\right) \Rightarrow \frac{1}{T_2} = 0.002-0.0001 = 0.0018 \Rightarrow T_2 \approx 556\ K$.

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Boilers Mechanical Engineering QUESTION #2479

Question 800

In the vector loop method for position analysis of an RRR dyad with links $L_2$ and $L_3$, the vector closure equation projected onto the x-axis gives:

$L_2\sin\phi_2 + L_3\sin\phi_3 = x_B - x_A$
$L_2\cos\phi_2 + L_3\cos\phi_3 = x_B - x_A$✔️
$L_2\cos\phi_2 - L_3\cos\phi_3 = x_B - x_A$
$L_2\phi_2 + L_3\phi_3 = x_B - x_A$

Correct Answer Logic:

For the RRR dyad, the vector loop equation projected on x gives $L_2\cos\phi_2 + L_3\cos\phi_3 = x_B - x_A$ and on y gives $L_2\sin\phi_2 + L_3\sin\phi_3 = y_B - y_A$.

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