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Wavelength $\propto 1/\Delta_o$ (crystal field splitting). Stronger field ligands → larger $\Delta_o$ → shorter wavelength absorbed. Ligand field strength: CN$^-$ $>$ NH$_3$ $>$ H$_2$O. Also Co$^{3+}$ has larger $\Delta_o$ than Cu$^{2+}$ or Ti$^{3+}$. [Co(CN)$_6$]$^{3-}$: highest $\Delta_o$ → shortest $\lambda$. [Co(NH$_3$)$_6$]$^{3+}$ $>$ [Ti(H$_2$O)$_6$]$^{3+}$ $>$ [Cu(H$_2$O)$_4$]$^{2+}$. Order of $\lambda$: C $>$ D $>$ A $>$ B, so increasing: B $<$ A $<$ D $<$ C = option (2) C$<$A$<$D$<$B is wrong. Correct: B$<$A$<$D$<$C = option (4).

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Administration QUESTION #2926

Question 1928

In the 3-tier government structure of Pakistan, the lowest level is generally the:

Provincial Government
Federal Government
Local/District Government✔️
Division Office

Correct Answer Logic:

Local government represents the third tier, designed to bring administration and service delivery closer to the citizens.

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Home Economics QUESTION #6257

Question 1929

Residential design focusing on the 'Work Triangle' is primarily applied in which room?

Bedroom
Living Room
Kitchen✔️
Bathroom

Correct Answer Logic:

The kitchen work triangle connects the sink, stove, and refrigerator for efficiency.

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Geography QUESTION #6308

Question 1930

The Keeling Curve showing atmospheric CO2 concentration exhibits annual oscillations primarily due to:

Seasonal variation in fossil fuel combustion
Northern Hemisphere vegetation seasonal photosynthesis and respiration cycles✔️
Ocean temperature-driven CO2 solubility changes
Volcanic activity fluctuations

Correct Answer Logic:

Annual oscillations in the Keeling Curve (~5-7 ppm amplitude) result from seasonal vegetation cycles in the Northern Hemisphere where most land mass exists. During NH summer, photosynthesis removes CO2; during winter, respiration and decomposition release it.

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HR and Management QUESTION #6482

Question 1931

Among organizational resources (Human, Physical, Financial, Technical, Informational), HRM specifically manages:

Only human resources exclusively
Human resources but considers their interaction with other resources✔️
All resources equally through people
Physical and human resources together

Correct Answer Logic:

HRM specifically manages human resources but must consider their interaction with other resources. People use physical, financial, technical, and informational resources to accomplish goals - effective HRM recognizes these interdependencies.

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Islamic Studies QUESTION #339

Question 1932

Who was the founder of Dar-ul-Hikmah (House of Wisdom)?

Jabir bin Hayan
Mamun-ur-Rasheed✔️
Abu Jafar Mansoor
Umar bin Abdul Aziz

Correct Answer Logic:

Caliph Al-Ma'mun of the Abbasid dynasty established it as a major intellectual center.

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General Knowledge QUESTION #4711

Question 1933

The 38th parallel serves as the boundary line between which countries?

Canada and America
North and South Vietnam
Greek and Turkish sectors of Cyprus
North Korea and South Korea✔️

Correct Answer Logic:

The 38th parallel north has divided the Korean Peninsula since 1945, separating North Korea and South Korea.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3147

Question 1934

The 'Retina' contains photoreceptor cells known as:

Iris and Pupil
Rods and Cones✔️
Lens and Cornea
Sclera and Choroid

Correct Answer Logic:

Rods detect light/dark; Cones detect color.

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Boilers Mechanical Engineering QUESTION #2490

Question 1935

In the contour method of kinetostatic analysis, a closed kinematic chain is converted into two open chains by:

Removing the ground link
Severing one kinematic pair and introducing reaction force unknowns at that pair✔️
Applying inertia forces to all links simultaneously
Setting all angular accelerations to zero

Correct Answer Logic:

The contour method 'mentally disconnects' the kinematic pair $A_i$ between links $i-1$ and $i$, introducing unknown reaction forces $\mathbf{F}_{i-1,i}$ and $\mathbf{F}_{i,i-1}=-\mathbf{F}_{i-1,i}$. The closed chain becomes two open chains.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3549

Question 1936

The 'Stomata' are tiny pores mostly found on:

Roots
Stems
Leaves✔️
Seeds

Correct Answer Logic:

Stomata are used for gas exchange and transpiration.

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Constitutional Law QUESTION #5832

Question 1937

A federal law provides that 'any state that accepts federal healthcare funding must waive its sovereign immunity to lawsuits in federal court for violations of the ADA.' Is this valid?

No, because Congress cannot force a state to waive its 11th Amendment immunity.
No, because it is an unconstitutional 'commandeering' of state governments.
Yes, because Congress may condition federal funds on a waiver of sovereign immunity under the Spending Power.✔️
Yes, because the 14th Amendment gives Congress power to abrogate state immunity.

Correct Answer Logic:

Congress can condition the receipt of federal funds on a state’s waiver of 11th Amendment immunity. As long as the waiver is 'clear and unequivocal' and the state accepts the money, the waiver is valid.

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Chemistry QUESTION #7128

Question 1938

Which of the following reagent systems is specifically used to produce trans-alkenes from the reduction of alkynes?

$H_{2}$ with $Pd/C$ and $BaSO_{4}$
$NaBH_{4}$
$Na$ in liquid $NH_{3}$✔️
$Sn$ and $HCl$

Correct Answer Logic:

The reduction of non-terminal alkynes using sodium ($Na$) or lithium ($Li$) in liquid ammonia ($NH_3$) follows a free-radical mechanism that leads to the formation of the more stable trans-alkene (Birch reduction). Conversely, Lindlar's catalyst ($H_2, Pd/C, BaSO_4$) would yield a cis-alkene.

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Ability / HR / Governance / Special Education QUESTION #1900

Question 1939

Under Rule 5(1)(iv) if the Authorized Officer proposes a MINOR penalty after receiving the inquiry report what does he do?

Forward the case to the authority for orders
Pass orders directly himself✔️
Send it to the Federal Service Tribunal
Refer it to the Secretary Establishment Division

Correct Answer Logic:

Rule 5(1)(iv) states that if it is proposed to impose a minor penalty the authorized officer shall pass orders accordingly himself without forwarding to the authority.

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Chemistry QUESTION #7164

Question 1940

In the redox titration of oxalate ions with permanganate in an acidic medium, how many electrons are involved in the production of a single molecule of $CO_{2}$?

$5$
$2$
$10$
$1$✔️

Correct Answer Logic:

The half-reaction for oxalate is: $C_{2}O_{4}^{2-} \rightarrow 2CO_{2} + 2e^{-}$. In this process, 2 electrons are released for every two molecules of $CO_{2}$ produced. Therefore, for one molecule of $CO_{2}$, the number of electrons involved is $2/2 = 1$.

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