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Section 14(2) provides that where employment is sought by a civil servant while on leave preparatory to retirement or within two years of the date of his retirement, he shall obtain the prior approval of the prescribed authority. The two-year cooling-off period is a significant restriction on post-retirement private employment.

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Mechanical Engineering QUESTION #2533

Question 1664

A perfectly plastic impact ($e=0$) between two particles results in:

Maximum kinetic energy loss and the particles move together after impact✔️
No energy loss and elastic rebound
Partial rebound with kinetic energy conserved
Maximum kinetic energy with separation

Correct Answer Logic:

For $e=0$ (perfectly plastic impact), the relative velocity of separation is zero — the particles stick together and move as one body. This results in maximum kinetic energy loss, while linear momentum is still conserved.

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Physics QUESTION #4390

Question 1665

If a body having mass $m_1 = 2\ kg$ moving with $5\ m/s$ approaches another mass $m_2 = 3\ kg$ with $1\ m/s$ in the same direction, relative speed of approach is $4\ m/s$. Relative speed of separation after collision will be:

$4\ m/s$✔️
$2\ m/s$
$6\ m/s$
Depends on masses

Correct Answer Logic:

By the law of conservation of momentum and the coefficient of restitution for elastic collisions: relative speed of approach $=$ relative speed of separation. Since relative speed of approach $= 5 - 1 = 4\ m/s$, the relative speed of separation $= 4\ m/s$.

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Urdu QUESTION #5222

Question 1666

'آدے آنا' محاورہ ہے اس کا کیا مطلب ہے؟

لڑائی کرنا
درمیان میں آنا✔️
مدد کرنا
ان میں سے کوئی نہیں

Correct Answer Logic:

آدے آنا محاورے کا مطلب ہے بیچ میں آنا یا کسی معاملے میں مداخلت کرنا۔

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Security Measures to Maintain Law and Order QUESTION #930

Question 1667

What is the primary function of a 'Sterile Area' in an airport?

Cleanliness and hygiene
Ensuring passengers have no prohibited items✔️
Providing a quiet zone for VIPs
Housing the airport's IT servers

Correct Answer Logic:

A sterile area is a high-security zone where everyone and everything has been screened for threats.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3602

Question 1668

'Peppermint Oil' is obtained from the leaves of:

Mentha piperita✔️
Foeniculum vulgare
Coriandrum sativum
Eucalyptus globulus

Correct Answer Logic:

Mentha piperita is the source of peppermint oil, used as a carminative.

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Basic Mathematics QUESTION #2839

Question 1669

Find the Simple Interest on Rs. 8000 at $6\%$ per annum for 3 years.

Rs. 1380
Rs. 1440✔️
Rs. 1500
Rs. 1560

Correct Answer Logic:

Simple Interest $= \dfrac{P \times R \times T}{100} = \dfrac{8000 \times 6 \times 3}{100} = \dfrac{144000}{100} = Rs.\ 1440$.

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Library Sciences QUESTION #1567

Question 1670

In IT-based library management, an 'OPAC' (Online Public Access Catalogue) represents an advancement over the traditional card catalogue primarily because it:

Displays books in their physical shelf order only
Allows users to search the collection by multiple access points simultaneously and view real-time availability✔️
Is maintained exclusively by the library director
Only works within the library building on dedicated terminals

Correct Answer Logic:

The OPAC replaced card catalogues by enabling multi-point simultaneous searching (by author, title, subject, keyword, ISBN, etc.) and displaying real-time item availability — functions impossible with static, single-entry card catalogues. Modern OPACs are also accessible remotely via the internet.

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Mathematics QUESTION #1297

Question 1671

For a particle moving along the ellipse $\dfrac{x^2}{a^2}+\dfrac{y^2}{b^2}=1$ with uniform speed $V$ at the point $(0,b)$, the normal component of acceleration is:

$\dfrac{V^2 a}{b^2}$✔️
$\dfrac{V^2 b}{a^2}$
$\dfrac{V^2}{a}$
$\dfrac{V^2 a^2}{b^3}$

Correct Answer Logic:

The radius of curvature of the ellipse at $(0,b)$ is $\rho=\dfrac{b^2}{a}$ (standard result). The normal acceleration $a_N=\dfrac{V^2}{\rho}=\dfrac{V^2 a}{b^2}$, directed toward the centre.

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English QUESTION #2731

Question 1672

Choose the correct PRESENT PERFECT form: 'I ___ this novel three times.'

read
reads
am reading
have read✔️

Correct Answer Logic:

The present perfect tense uses have/has + past participle. It expresses an action that has relevance to the present. 'Have read' is correct here.

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City and Regional Planning QUESTION #4978

Question 1673

In Ebenezer Howard's Garden City concept, what was the recommended maximum population?

10,000
32,000✔️
50,000
100,000

Correct Answer Logic:

Howard's Garden City model proposed a maximum population of 32,000 (30,000 in city proper plus 2,000 in agricultural belt) to maintain human scale, self-containment, and balance between town and country living.

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Chemistry QUESTION #1096

Question 1674

Among compounds I (benzene sp$^2$ C–H*), II (phenylacetylene sp C–H*) and III (cyclopropane C–H*), correct order of C–H bond dissociation energy:

III $>$ II $>$ I✔️
II $>$ III $<$ I
II $>$ I $>$ III
I $>$ II $>$ III

Correct Answer Logic:

Bond dissociation energy of C–H bond depends on hybridization of carbon: sp $>$ sp$^2$ $>$ sp$^3$. Compound II (alkyne/phenylacetylene): sp C–H — highest BDE. Compound III (cyclopropane): C–H has partial sp$^2$ character due to ring strain → BDE between sp$^2$ and sp. Compound I (benzene): sp$^2$ C–H. Order: II $>$ III $>$ I. Answer: option (1) III > II > I is wrong. Correct is II > III > I = option (3).

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Therapeutics and Patient Care QUESTION #3881

Question 1675

Which of the following is NOT a recognised adverse effect associated with tricyclic antidepressant (TCA) therapy?

Sedation
Diarrhoea✔️
Blurred vision
Urinary retention

Correct Answer Logic:

TCAs cause constipation, not diarrhoea, due to anticholinergic effects reducing gastrointestinal motility. Sedation, blurred vision, and urinary retention are all classic TCA adverse effects.

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Chemistry QUESTION #4371

Question 1676

What happens when $H^+$ is added to ammonium hydroxide and ammonium chloride buffer?

More ammonium hydroxide is formed
Reaction will move reverse
Reaction will move forward✔️
No effect on equilibrium

Correct Answer Logic:

In $NH_4OH/NH_4Cl$ buffer, adding $H^+$ shifts the equilibrium: $NH_4OH + H^+ \rightarrow NH_4^+ + H_2O$. The reaction moves forward (Le Chatelier's principle), consuming the added $H^+$ and maintaining the pH.

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Basic Mathematics QUESTION #4611

Question 1677

What is $(3x)(4x)$?

$7x$
$12x$
$12x^2$✔️
$7x^2$

Correct Answer Logic:

Multiply coefficients and variables: $(3x)(4x) = 12x^2$

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Reading and Writing (Module-1) QUESTION #5403

Question 1678

The following text is adapted from Jack London's 1903 novel The Call of the Wild. Buck is a sled dog living with John Thornton in Yukon, Canada. Thornton alone held [Buck]. The rest of mankind was as nothing. Chance travellers might praise or pet him; but he was cold under it all, and from a too demonstrative man he would get up and walk away. When Thornton's partners, Hans and Pete, arrived on the long-expected raft, Buck refused to notice them till he learned they were close to Thornton; after that he tolerated them in a passive sort of way, accepting favors from them as though he favored them by accepting. Which choice best states the main idea of the text?

Buck has become less social since he began living with Thornton.
Buck mistrusts humans and does his best to avoid them.
Buck has been especially well liked by most of Thornton's friends.
Buck holds Thornton in higher regard than any other person.✔️

Correct Answer Logic:

The text emphasizes that Thornton alone held Buck's regard while 'the rest of mankind was as nothing,' showing Buck's special attachment to Thornton above all others.

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Psychology QUESTION #1454

Question 1679

Which approach in psychology emphasizes the role of unconscious drives and early childhood experiences?

Behavioral psychology
Psychoanalysis✔️
Cognitive psychology
Humanistic psychology

Correct Answer Logic:

Psychoanalysis, founded by Sigmund Freud, emphasizes that unconscious drives, repressed memories, and early childhood experiences are the primary determinants of adult personality and behavior. Key concepts include the id/ego/superego, defence mechanisms, and psychosexual stages of development. Behavioral psychology focuses on observable behavior; cognitive on thought processes; humanistic on personal growth and self-actualization.

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Chemistry QUESTION #5534

Question 1680

Sucrose undergoes acid hydrolysis via first-order kinetics with a half-life of 3.33 h at 25°C. After 9 h, the fraction of sucrose remaining is $f$. Find the value of $\log_{10}\!\left(\dfrac{1}{f}\right)\times10^{-2}$ (nearest integer). [Given: $\ln 10 = 2.303$, $\ln 2 = 0.693$]

81✔️
90
135
27

Correct Answer Logic:

$k = \frac{0.693}{3.33} = 0.208\ h^{-1}$. After $t=9$ h: $\ln\left(\frac{1}{f}\right) = kt = 0.208\times9 = 1.872$. $\log_{10}\left(\frac{1}{f}\right) = \frac{1.872}{2.303} = 0.8127$. Answer $= 0.8127\times10^{-2}\times10^{2}\approx81\times10^{-2}$, so the value is $\approx 81\times10^{-2}$, meaning the answer = 81.

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