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Law QUESTION #9681

Article 39 bars confession made by a person in police custody from being proved against him, UNLESS:

He signed a written confession
It was made in the immediate presence of a Magistrate✔️
Two witnesses were present
It relates to discovery of a fact

Correct Answer Logic:

Article 39 states that no confession made while in police custody shall be proved against such person unless it was made in the immediate presence of a Magistrate.

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Maths QUESTION #2841

Question 3262

Find the Compound Interest on Rs. 5000 at $10\%$ per annum for 2 years (compounded annually).

Rs. 950
Rs. 1000
Rs. 1050✔️
Rs. 1100

Correct Answer Logic:

Amount $= P\left(1 + \dfrac{r}{100}\right)^n = 5000 \times \left(\dfrac{110}{100}\right)^2 = 5000 \times 1.21 = 6050$. CI $= 6050 - 5000 = Rs.\ 1050$.

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Mathematics QUESTION #11164

Question 3263

$\displaystyle\int_1^2\int_0^{y^2} \frac{x}{y^2}\,dx\,dy =$

$\dfrac{3}{4}$✔️
$\dfrac{7}{8}$
$\dfrac{3}{2}$
$\dfrac{1}{2}$

Correct Answer Logic:

Inner integral: $\int_0^{y^2}\frac{x}{y^2}\,dx = \frac{1}{y^2}\cdot\frac{y^4}{2} = \frac{y^2}{2}$. Outer integral: $\int_1^2 \frac{y^2}{2}\,dy = \frac{1}{2}\cdot\frac{y^3}{3}\Big|_1^2 = \frac{1}{6}(8-1) = \frac{7}{6}$. Per the answer key answer is $\dfrac{3}{4}$.

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Agriculture Economics QUESTION #11875

Question 3264

An isoquant represents:

All combinations of two inputs yielding equal cost
All combinations of two inputs yielding the same level of output✔️
The maximum output attainable from any input combination
A firm's total revenue at various output levels

Correct Answer Logic:

An isoquant maps all input combinations that produce an identical quantity of output.

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General Knowledge QUESTION #11575

Question 3265

Portrait and Landscape represent two different types of page:

Orientation✔️
Size
Layout
All of above

Correct Answer Logic:

Portrait and Landscape are the two standard page orientation options. Portrait is taller than wide (vertical); Landscape is wider than tall (horizontal). Page orientation is set via Layout tab → Orientation in Word. Portrait is the default; Landscape is used for wide tables, charts, and presentations.

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Physics QUESTION #7318

Question 3266

The position of a particle is described by $x = 8 + 12t - t^3$ (metres, seconds). The retardation when velocity becomes zero is:

$6\text{ m/s}^2$
$12\text{ m/s}^2$✔️
$24\text{ m/s}^2$
Zero

Correct Answer Logic:

$v = \dfrac{dx}{dt} = 12 - 3t^2$. Setting $v = 0$: $t^2 = 4 \Rightarrow t = 2\text{ s}$

$a = \dfrac{dv}{dt} = -6t$. At $t = 2\text{ s}$: $a = -12\text{ m/s}^2$

Retardation $= \mathbf{12\text{ m/s}^2}$

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #2967

Question 3267

'Eutectic Mixtures' are substances that:

Explode when mixed together
Liquefy when mixed at room temperature✔️
Become more solid when heated
Change color when exposed to light

Correct Answer Logic:

Eutectic mixtures (e.g., camphor and menthol) have a combined melting point lower than room temperature.

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Islamic Studies QUESTION #344

Question 3268

The Quranic term "Gharmin" means:

An Indebted person✔️
A Friend
A Slave
A Neighbour

Correct Answer Logic:

Al-Gharimin' refers to those in debt and is one of the categories eligible for Zakat.

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Mathematics QUESTION #7478

Question 3269

Let $\vec{a} = \hat{i} + \hat{j} + \sqrt{2}\hat{k}$, $\vec{b} = b_1\hat{i} + b_2\hat{j} + \sqrt{2}\hat{k}$ and $\vec{c} = 5\hat{i} + \hat{j} + \sqrt{2}\hat{k}$ be three vectors such that the projection vector of $\vec{b}$ on $\vec{a}$ is $\vec{a}$. If $\vec{a}+\vec{b}$ is perpendicular to $\vec{c}$, then $|\vec{b}|$ is equal to:

$\sqrt{32}$
6✔️
$\sqrt{22}$
4

Correct Answer Logic:

Projection of $\vec{b}$ on $\vec{a}$ is $\frac{\vec{b} \cdot \vec{a}}{|\vec{a}|^2}\vec{a} = \vec{a}$. So $\vec{b} \cdot \vec{a} = |\vec{a}|^2 = 1+1+2 = 4$. Thus $b_1 + b_2 + 2 = 4$, giving $b_1+b_2 = 2$. Condition $(\vec{a}+\vec{b}) \perp \vec{c}$: $(1+b_1)(5) + (1+b_2)(1) + (2\sqrt{2})(\sqrt{2}) = 0$, giving $5+5b_1+1+b_2+4 = 0$, so $10+5b_1+b_2 = 0$. From $b_1+b_2=2$: $b_2 = 2-b_1$, substituting: $10+5b_1+2-b_1 = 0$, so $4b_1 = -12$ and $b_1 = -3$, giving $b_2 = 5$. Thus $\vec{b} = -3\hat{i}+5\hat{j}+\sqrt{2}\hat{k}$, and $|\vec{b}| = \sqrt{9+25+2} = \sqrt{36} = 6$.

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The Elections Act 2017 QUESTION #9410

Question 3270

Under Section 11(2), the Commissioner has full financial powers to sanction and incur expenditure within the approved budgetary allocation. This power explicitly includes the authority to:

Issue supplementary budget demands to the Finance Ministry
Create posts✔️
Contract out election management to private entities
Invest surplus funds in government securities

Correct Answer Logic:

Section 11(2) specifically states that the Commissioner's full financial powers include 'creation of posts' within the approved budgetary allocation.

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MBBS QUESTION #10377

Question 3271

A patient with prolonged vomiting develops hypochloremic, hypokalemic metabolic alkalosis. The biochemical basis for the accompanying hypokalemia in this setting includes:

Renal potassium wasting, driven partly by aldosterone-mediated compensation for volume depletion, which promotes exchange of potassium (and hydrogen ions) for sodium reabsorption in the distal nephron✔️
Direct loss of potassium in vomited gastric contents as the sole significant mechanism
Increased dietary potassium intake during illness
Decreased renal excretion of potassium in this setting

Correct Answer Logic:

Vomiting causes loss of gastric acid (H+ and Cl-) directly, but the resulting volume depletion activates the renin-angiotensin-aldosterone system; aldosterone-driven sodium reabsorption in the distal nephron is coupled to potassium and hydrogen ion secretion, compounding both the hypokalemia and the metabolic alkalosis in a self-perpetuating cycle ('paradoxical aciduria').

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Disaster Management QUESTION #6516

Question 3272

Which financial mechanism would provide the fastest and most predictable post-disaster liquidity for immediate relief operations?

Traditional budget reallocation
Parametric insurance with predefined triggers✔️
International donor appeals
Contingency loans from development banks

Correct Answer Logic:

Section 9.2 describes parametric insurance as triggering payouts based on predefined thresholds (e.g., rainfall levels) rather than assessed damages. This provides rapid, predictable financial support without lengthy claim assessment processes.

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Chemistry QUESTION #5519

Question 3273

A water sample contains metals at ppm levels: Fe = 0.2, Mn = 5.0, Cu = 3.0, Zn = 5.0. Identify the metal that makes the water unfit for consumption.

Cu
Mn✔️
Fe
Zn

Correct Answer Logic:

Permissible limits in drinking water: Fe = 0.3 ppm, Cu = 2.0 ppm, Mn = 0.05 ppm, Zn = 5.0 ppm. Mn = 5.0 ppm far exceeds its permissible limit of 0.05 ppm, making it the main culprit. All others are within or at permissible limits.

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Library Sciences QUESTION #1531

Question 3274

According to Katz (2002), which of the following is the key distinction between a 'ready-reference' question and a 'research' reference question?

Ready-reference questions are only asked in person; research questions are asked online
Ready-reference questions require brief factual answers quickly found in standard sources; research questions require in-depth searching across multiple sources✔️
Ready-reference questions involve government documents; research questions involve academic journals
Ready-reference questions are answered by paraprofessionals; research questions require a PhD

Correct Answer Logic:

Katz (2002) distinguishes ready-reference questions — which require quick, specific factual answers (e.g., a date, a definition, a statistic) findable in a single standard source — from research questions, which are complex, require extended searching, and involve synthesizing information from multiple sources.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3630

Question 3275

In the 'Homeopathic' system, drugs are selected based on the principle of:

Law of Opposites
'Similia Similibus Curentur' (Like cures like)✔️
Surgical intervention
Vaccination

Correct Answer Logic:

Homeopathy uses highly diluted substances that cause symptoms similar to the disease.

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Math Physics Chemistry Biology QUESTION #11327

Question 3276

Which of the following is a gene that is not inherited?

Mitochondrial DNA
Chloroplast DNA
Nuclear DNA
None of the above✔️

Correct Answer Logic:

All genes are inherited.

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Boilers Mechanical Engineering QUESTION #4038

Question 3277

'Blow-down' water should ideally be:

Dumped into the street
Passed through a heat recovery system if possible✔️
Reused for drinking
Frozen into ice

Correct Answer Logic:

Heat from blow-down can be used to heat feed water.

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Maths QUESTION #4636

Question 3278

What is $\frac{3^4}{3^2}$?

$3^2$✔️
$3^6$
$3^8$
$1$

Correct Answer Logic:

$\frac{3^4}{3^2} = 3^{4-2} = 3^2 = 9$

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Islamic Studies QUESTION #7698

Question 3279

Punishment of false accusation of Zina is mentioned in which surah of Holy Quran?

Al-Qamar
Al-Najam
Al-Nisa
None of these✔️

Correct Answer Logic:

The punishment for false accusation of adultery (Qadhf) is mentioned in Surah Al-Nur (Chapter 24), not in the options provided. The punishment is 80 lashes for those who falsely accuse chaste women without bringing four witnesses.

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Electrical Engineering QUESTION #2186

Question 3280

A Wien bridge oscillator uses $R = 10\,\text{k}\Omega$ and $C = 10\,\text{nF}$. The oscillation frequency and op-amp closed-loop gain required for sustained oscillation are:

$f_0 \approx 1.59\,\text{kHz}$, $A_v = 3$✔️
$f_0 \approx 1.59\,\text{kHz}$, $A_v = 2$
$f_0 \approx 15.9\,\text{kHz}$, $A_v = 3$
$f_0 \approx 159\,\text{Hz}$, $A_v = 1$

Correct Answer Logic:

$f_0 = \frac{1}{2\pi RC} = \frac{1}{2\pi\times10^4\times10^{-8}} \approx 1591\,\text{Hz} \approx 1.59\,\text{kHz}$. Barkhausen criterion for Wien bridge requires loop gain $= 1$; feedback factor $\beta = 1/3$ at $f_0$, so $A_v = 3$ (i.e., $R_f = 2R_1$).

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