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Chemistry QUESTION #7805

A carbon atom carrying a positive charge and bonded to three other atoms/groups is called:

Carbanion
Carbene
Carbocation✔️
Oxonium

Correct Answer Logic:

Carbocation (e.g., CH₃⁺) has a positively charged carbon with 6 electrons (trivalent). Carbanion: negative charge; carbene: neutral with divalent carbon; oxonium: oxygen with positive charge.

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Security Measures to Maintain Law and Order QUESTION #912

Question 2

"Hold Baggage Screening" (HBS) is a 5-level security measure designed to:

Prevent theft
Detect explosives/contraband✔️
Organize luggage
Reduce weight

Correct Answer Logic:

Level 1-5 HBS ensures that no prohibited items reach the aircraft, maintaining the "Order" of safety in the air.

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Biology QUESTION #7750

Question 3

The mantle is a characteristic anatomical feature of which group?

Annelids
Chordates
Echinoderms
Mussel (Mollusca)✔️

Correct Answer Logic:

The mantle is a fleshy fold in mollusks (e.g., mussel, snail, octopus) that secretes the shell. Annelids have no mantle; echinoderms have a water vascular system.

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Geography QUESTION #1250

Question 4

Grand Banks is situated in:

NE North America✔️
NW Europe
East Asia
None of these

Correct Answer Logic:

The Grand Banks is a series of underwater plateaus (continental shelves) located southeast of Newfoundland, Canada — in the northwestern North Atlantic Ocean, off the northeast coast of North America. It is one of the world's richest fishing grounds, where the cold Labrador Current meets the warm Gulf Stream, creating ideal conditions for marine life.

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Physics QUESTION #1158

Question 5

X-rays are electromagnetic waves of wavelengths of the order of:

1 nm
0.1 nm✔️
2 nm
100 nm

Correct Answer Logic:

X-rays have wavelengths in the range of approximately $0.01\ \text{nm}$ to $10\ \text{nm}$, with a typical order of $0.1\ \text{nm}$ (1 Å). This is comparable to the spacing between atoms in crystals, which is why X-rays are used in crystallography.

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Ability / HR / Governance / Special Education QUESTION #1876

Question 6

Under Rule 3(3), a surplus civil servant resulting from reorganization/abolition can be appointed to a post in which pay scale?

One scale lower than his previous BPS
Any available post
The basic pay scale to which he belonged✔️
One scale higher as compensation

Correct Answer Logic:

Rule 3(3) states a surplus person may be appointed to a post in the basic pay scale to which he belonged, if he possesses the qualifications and fulfills other conditions.

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Logical Reasoning QUESTION #3938

Question 7

Select the pair with a similar relationship: TRIGGER : REACTION

Seed : Plant✔️
Cause : Effect
Switch : Light
Key : Lock

Correct Answer Logic:

1

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Physics QUESTION #7313

Question 8

A particle moves such that $x = (t+5)^{-1}$. The acceleration of the particle is proportional to:

$(\text{velocity})^{2/3}$
$(\text{velocity})^{3/2}$✔️
$(\text{distance})^{2}$
$(\text{distance})^{-2}$

Correct Answer Logic:

$v = \dfrac{dx}{dt} = -(t+5)^{-2}$, so $(t+5) = (-v)^{-1/2}$

$a = \dfrac{dv}{dt} = 2(t+5)^{-3} = 2(-v)^{3/2}$

Therefore $a \propto \mathbf{(\text{velocity})^{3/2}}$

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Security Measures to Maintain Law and Order QUESTION #851

Question 9

When maintaining order, the "Principle of Proportionality" in the use of force means:

Force must equal the threat✔️
Force must exceed the threat
Use of force is never allowed
Force is used only on weekends

Correct Answer Logic:

Ethics in security require that the level of force used must be the minimum necessary to neutralize the specific threat encountered.

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Electrical Engineering QUESTION #2182

Question 10

Using Mason's Gain Formula on a signal flow graph with two forward path gains $P_1 = 6$, $P_2 = 2$, and two loops $L_1 = -4$, $L_2 = -2$ (all loops touch all paths), the overall transfer function $T = Y/X$ is:

$\dfrac{8}{7}$✔️
$\dfrac{8}{3}$
$4$
$\dfrac{6}{7}$

Correct Answer Logic:

Graph determinant $\Delta = 1-(L_1+L_2) = 1-(-4-2) = 7$. Since loops touch all paths, cofactors $\Delta_1 = \Delta_2 = 1$. $T = \frac{P_1\Delta_1+P_2\Delta_2}{\Delta} = \frac{6+2}{7} = \frac{8}{7}$.

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Education QUESTION #1486

Question 11

Which psychologist is known as the 'Father of Modern Educational Psychology' and founder of Behavioral Psychology?

Ivan Pavlov
B.F. Skinner
Edward Thorndike✔️
Jean Piaget

Correct Answer Logic:

Edward Thorndike is called the Father of Modern Educational Psychology and founder of Behavioral Psychology. He developed the concept of Connectionism and the three laws of learning.

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Information Technology QUESTION #1134

Question 12

If Computer A executes a program in 10s and Computer B in 15s, how much faster is A than B?

1.5 times✔️
0.5 times
2 times
None of these

Correct Answer Logic:

Performance is the inverse of execution time. Performance Ratio =Execution TimeAExecution TimeB=1015=1.5.

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Chemistry QUESTION #468

Question 13

Which of the following is pale yellow to reddish yellow in color?

Pb?O
PbO?
PbO✔️
2PbCO?.Pb(OH)?

Correct Answer Logic:

PbO (litharge) is pale yellow to reddish yellow

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Islamic Studies QUESTION #7698

Question 14

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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Library Sciences QUESTION #1501

Question 15

The International Standard Bibliographic Description (ISBD) was developed under the auspices of which organization?

ALA
LC
IFLA✔️
UNESCO

Correct Answer Logic:

ISBD was developed by the International Federation of Library Associations and Institutions (IFLA). It standardizes elements and punctuation of bibliographic description to facilitate international exchange of bibliographic data.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3044

Question 16

The 'NP' in Type NP glass stands for:

New Product
Non-Parenteral✔️
Negative Pressure
Neutral Ph

Correct Answer Logic:

Type NP is general-purpose soda-lime glass intended for non-injectable products.

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Physics QUESTION #7028

Question 17

A force acts on an object of mass $2\text{ kg}$ such that its position as a function of time is $x = 3t^2 + 5$. Calculate the work performed by this force during the first $5$ seconds of motion.

$850\text{ J}$
$950\text{ J}$
$875\text{ J}$
$900\text{ J}$✔️

Correct Answer Logic:

Work done is equal to the change in kinetic energy ($\Delta KE$). First, find velocity $v = \frac{dx}{dt} = 6t$. At $t=0$, $v_i = 0$. At $t=5$, $v_f = 6(5) = 30\text{ m/s}$. $\Delta KE = \frac{1}{2}m(v_f^2 - v_i^2) = \frac{1}{2}(2)(30^2 - 0) = 900\text{ J}$.

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Logical Reasoning QUESTION #3930

Question 18

Florence Nightingale was a _____ in the evolution of modern clinical medicine, _____ practices like ward sanitization and patient isolation.

collaborator...rejecting✔️
maverick...protesting
pioneer...initiating
critic...standardizing

Correct Answer Logic:

2

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Ability / HR / Governance / Special Education QUESTION #1852

Question 19

Who is the appointing authority for posts in BPS 17 to 19?

Prime Minister
Secretary of the Ministry or Division concerned✔️
An officer notified by the Secretary
Establishment Division

Correct Answer Logic:

Rule 6(1) Table entry (2) specifies the Secretary of the Ministry or Division concerned as appointing authority for posts in BPS 17 to 19.

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Disaster Management QUESTION #6544

Question 20

What makes disaster risk insurance challenging to scale for vulnerable populations in Pakistan?

Insurance company reluctance
Affordability barriers, limited awareness, trust deficits, and lack of integration with existing social protection systems✔️
Government regulation
Lack of disasters

Correct Answer Logic:

Section 9.3 identifies multiple barriers: affordability (requiring subsidies), awareness (need for outreach), and integration challenges with existing programs. Scaling requires addressing these systemic barriers through government support, partnerships with microfinance, and simplified products.

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