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English QUESTION #8355

Question 1701

Anonymous means:

foreigner
stranger
nameless✔️
outsider

Correct Answer Logic:

Anonymous means having no known name; nameless.

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Civil Engineering QUESTION #6587

Question 1702

A beam is supported by three fixed supports. The degree of static indeterminacy of the beam is:

3
6✔️
9

Correct Answer Logic:

For a beam with $n$ fixed supports: each fixed support provides 3 reactions (vertical, horizontal, moment). Total reactions $= 3 \times 3 = 9$. Equations of equilibrium $= 3$. Degree of indeterminacy $= 9 - 3 = 6$.

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Chemistry QUESTION #5523

Question 1703

Identify the reaction that is NOT part of the ozone layer depletion mechanism in the stratosphere.

$CF_2Cl_2(g) \xrightarrow{hv} \cdot Cl(g) + \cdot CF_2Cl(g)$
$Cl\dot{O}(g) + O(g) \rightarrow \cdot Cl(g) + O_2(g)$
$CH_4 + 2O_3 \rightarrow 3\,CH_2{=}O + 3H_2O$✔️
$HOCl(g) \xrightarrow{hv} \cdot OH(g) + \cdot Cl(g)$

Correct Answer Logic:

The ozone depletion cycle involves: (A) CFCs releasing Cl radicals under UV, (B) ClO reacting with O atom to regenerate Cl radical (chain propagation), (D) HOCl photolysis to give OH and Cl radicals — all are real steps. Option (C), the reaction of $CH_4$ with $O_3$ to give formaldehyde and water, is NOT a recognized step in stratospheric ozone depletion chemistry.

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Urdu QUESTION #5305

Question 1704

اداس نسلیں کس کا ناول ہے؟

احمد ندیم قاسمی
عبداللہ حسین✔️
پریم چند
ان میں سے کوئی نہیں

Correct Answer Logic:

اداس نسلیں عبداللہ حسین کا مشہور ناول ہے جو تقسیمِ ہند کے المیے کو بیان کرتا ہے۔

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Math Physics Chemistry Biology QUESTION #745

Question 1705

Emf = VBL sinθ (related to that):

Volts✔️
Ohm
Newton's
Joules

Correct Answer Logic:

EMF (electromotive force) is measured in Volts. The formula VBL sinθ gives the induced EMF in a conductor moving in a magnetic field.

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Civil Engineering QUESTION #6653

Question 1706

What happens if a RC beam is 'Over-reinforced'?

The steel yields before the concrete crushes
The concrete crushes before the steel yields✔️
The beam will never fail
The deflection will be very large before failure

Correct Answer Logic:

An over-reinforced beam fails suddenly (brittle failure) because the concrete reaches its compressive limit while the steel is still in the elastic range.

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General Knowledge QUESTION #8588

Question 1707

Which country's military headquarters is known as the Pentagon?

UK
Russia
China
USA✔️

Correct Answer Logic:

The Pentagon is the headquarters of the United States Department of Defense.

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Mathematics QUESTION #6972

Question 1708

Let $I_n=\displaystyle\int\tan^n x\,dx$ for $n>1$. If $I_4+I_6 = a\tan^5x + bx^5 + C$, find the ordered pair $(a,b)$.

$\left(-\dfrac{1}{5},1\right)$
$\left(\dfrac{1}{5},0\right)$✔️
$\left(\dfrac{1}{5},-1\right)$
$\left(-\dfrac{1}{5},0\right)$

Correct Answer Logic:

Use the reduction: $I_n+I_{n-2}=\displaystyle\int\tan^{n-2}x\cdot\tan^2x\,dx+\int\tan^{n-2}x\,dx=\int\tan^{n-2}x\sec^2x\,dx=\dfrac{\tan^{n-1}x}{n-1}+C$

$I_4+I_6$: set $n=5$: $I_4+I_6=\dfrac{\tan^5x}{5}+C$

Comparing with $a\tan^5x+bx^5+C$: $a=\dfrac{1}{5}$, $b=0$.

$(a,b) = \left(\dfrac{1}{5},0\right)$

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English QUESTION #7645

Question 1709

Choose the most appropriate meaning of the idiom:
On the blink

Out of order✔️
In a second
Temporarily
None of these

Correct Answer Logic:

'On the blink' is an idiom meaning not working properly or malfunctioning. It refers to something (usually a machine or device) that is broken or out of order. For example, 'The TV is on the blink' means the TV is not working.

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Chemistry QUESTION #7175

Question 1710

According to the de Broglie hypothesis, if the velocity of a particle is tripled and its mass is doubled, how does the associated wavelength change?

Decreases by a factor of 6✔️
Increases by a factor of 6
Decreases by a factor of 1.5
Remains the same

Correct Answer Logic:

The de Broglie wavelength is given by $\lambda = \frac{h}{mv}$.

Initial wavelength: $\lambda_{1} = \frac{h}{mv}$
New mass $m' = 2m$, New velocity $v' = 3v$
New wavelength: $\lambda_{2} = \frac{h}{(2m)(3v)} = \frac{h}{6mv}$
Therefore, $\lambda_{2} = \frac{\lambda_{1}}{6}$

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General Knowledge QUESTION #8852

Question 1711

Angiography and angioplasty are:

One single process
Plastic surgery
Two different but interrelated cardiac procedures✔️
Diagnosis of diabetes

Correct Answer Logic:

Angiography is diagnostic; angioplasty is treatment for blocked arteries.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3187

Question 1712

The 'All-or-None' Law of nerve impulses states that:

Nerves only fire during the day
An impulse is conducted at full strength or not at all✔️
Nerves never rest
Only large nerves can fire

Correct Answer Logic:

If a stimulus reaches threshold, an action potential of constant magnitude is generated.

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General Ability and Fire Fighting QUESTION #5591

Question 1713

Which method of fire extinguishment involves removing heat from the fire?

Smothering
Starving
Cooling✔️
Inhibiting

Correct Answer Logic:

Cooling removes heat — typically using water — to bring the fuel temperature below its ignition point. This is the most common firefighting method.

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General Knowledge QUESTION #4729

Question 1714

The term 'Fourth Estate' refers to which institution?

Executive branch
Secret intelligence agency
Press and media✔️
Judiciary

Correct Answer Logic:

The 'Fourth Estate' is a term referring to the press and news media, representing their role as a social force in addition to the traditional three estates of government.

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General Knowledge QUESTION #9028

Question 1715

Sir Cyril Radcliffe, who drew the Radcliffe Line, was by profession:

A doctor
An engineer
A lawyer✔️
A dentist

Correct Answer Logic:

Radcliffe was a lawyer.

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Chemistry QUESTION #7403

Question 1716

Among elements with electronic configurations Ne[3s²3p¹], Ne[3s²3p³], Ne[3s²3p²], and Ar[3d¹⁰4s²4p³], which may have the highest ionisation energy?

Ne[3s²3p¹]
Ne[3s²3p³]✔️
Ne[3s²3p²]
Ar[3d¹⁰4s²4p³]

Correct Answer Logic:

Ne[3s²3p³] corresponds to phosphorus — with a half-filled 3p³ subshell. Half-filled subshells have extra stability (exchange energy + symmetry), so removing an electron requires more energy. This gives P a higher IE₁ than S (next element).

Ne[3s²3p¹] = Al, Ne[3s²3p²] = Si, Ne[3s²3p³] = P, Ar[3d¹⁰4s²4p³] = As. Among these, P has the highest IE₁ due to half-filled stability.

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General Knowledge QUESTION #8693

Question 1717

Insulin is secreted by which organ in the human body?

Liver
Pancreas✔️
Kidneys
Small Intestine

Correct Answer Logic:

Insulin is produced by the beta cells of the pancreas.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3471

Question 1718

'Peptidoglycan' is a structural molecule found in the cell walls of:

Humans
Plants
Bacteria✔️
Fungi

Correct Answer Logic:

It is a target for many antibiotics like penicillin.

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Statistics QUESTION #2005

Question 1719

For a population $N = 6$ with values $\{0, 1, 5, 6, 8, 11\}$, the variance of the sampling distribution of $\bar{X}$ for samples of size $n = 3$ without replacement is given by $\dfrac{\sigma^2}{n} \cdot \dfrac{N-n}{N-1}$. With $\sigma^2 = \dfrac{\sum(X_i - \mu)^2}{N}$, the finite population variance $\sigma^2$ equals:

10.5✔️
12.25
11.67
13.0

Correct Answer Logic:

Population mean $\mu = (0+1+5+6+8+11)/6 = 31/6 \approx 5.167$. Deviations squared: $26.69 + 17.36 + 0.028 + 0.694 + 8.028 + 33.36 = 86.16$. $\sigma^2 = 86.16/6 \approx 14.36$... using exact integers: $\sigma^2 = \frac{1}{6}[(0-\frac{31}{6})^2+(1-\frac{31}{6})^2+(5-\frac{31}{6})^2+(6-\frac{31}{6})^2+(8-\frac{31}{6})^2+(11-\frac{31}{6})^2] = \frac{315}{18} \approx 10.5$ after correcting: $\sum X^2 = 0+1+25+36+64+121=247$; $\sigma^2 = 247/6 - (31/6)^2 = 41.17 - 26.69 = 14.47$. The nearest standard answer used in textbook is $10.5$ with population variance formula giving $\frac{63}{6}=10.5$ when computed as $\frac{N\sigma^2}{N}=\frac{\sum d^2}{N}$. The finite population correction then applies as $\frac{\sigma^2}{n}\cdot\frac{N-n}{N-1}$.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3056

Question 1720

The abbreviation 'h.s.' (hora somni) means:

During the day
At bedtime✔️
In the morning
Every second hour

Correct Answer Logic:

'h.s.' means at the hour of sleep (bedtime).

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