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Physics and Math QUESTION #736
Question 3881
Bernoulli equation is according to ___ law.
  • Stoke's law
  • Einstein's equation
  • Newton's lawβœ”οΈ
  • None
Correct Answer Logic:
Bernoulli's equation is derived from the conservation of energy and is consistent with Newton's laws of motion applied to fluid flow.
Uploaded by: Fani Warraich
Chemistry QUESTION #1446
Question 3882
Which reaction involves the conversion of aldehydes into alcohols?
  • Oxidation
  • Reductionβœ”οΈ
  • Hydrolysis
  • None of these
Correct Answer Logic:
Aldehydes (\(RCHO\)) are converted to primary alcohols (\(RCH_2OH\)) by reduction β€” adding hydrogen across the \(C=O\) bond. Common reducing agents include \(\text{NaBH}_4\) (sodium borohydride) and \(\text{LiAlH}_4\) (lithium aluminium hydride). Oxidation of aldehydes gives carboxylic acids, not alcohols. Hydrolysis is for esters, amides, etc.
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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3593
Question 3883
'Ephedrine' is an alkaloid used primarily as a:
  • Bronchodilatorβœ”οΈ
  • Painkiller
  • Antibiotic
  • Purgative
Correct Answer Logic:
Ephedrine is used to treat asthma and nasal congestion.
Uploaded by: Fani Warraich
Islamic Studies QUESTION #631
Question 3884
"Hadith Taqreeri" mentions:
  • Speeches of the Prophet (ο·Ί)
  • Conversation of Companions
  • Silence of the Prophet (ο·Ί) on a companion's actionβœ”οΈ
  • None of these
Correct Answer Logic:
It refers to actions done by companions in the Prophet's presence which he did not forbid.
Uploaded by: Fani Warraich
Commerce QUESTION #1222
Question 3885
When a tax on a good starts small and is gradually increased, tax revenue:
  • Will fall
  • Will rise
  • Will first rise and then fallβœ”οΈ
  • Will first fall and then rise
Correct Answer Logic:
This is described by the Laffer Curve. At very low tax rates, revenue is low. As rates rise, revenue increases. But beyond an optimal rate, higher taxes reduce the tax base (less economic activity, more evasion) so revenue begins to fall. Therefore tax revenue first rises and then falls as the tax rate is gradually increased.
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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3555
Question 3886
'Ginseng' is a famous tonic root used in which traditional system?
  • Unani
  • Homeopathy
  • Chinese Medicineβœ”οΈ
  • Allopathy
Correct Answer Logic:
Ginseng is highly valued in Traditional Chinese Medicine (TCM).
Uploaded by: Fani Warraich
Biology Zoology Botany QUESTION #1365
Question 3887
A cross between an individual with an unknown genotype and a homozygous recessive individual is called a:
  • Back cross
  • Test crossβœ”οΈ
  • Monohybrid cross
  • Dihybrid cross
Correct Answer Logic:
A test cross involves crossing an organism with an unknown genotype (possibly homozygous dominant or heterozygous) with a homozygous recessive individual (e.g., aa). The phenotypic ratio of offspring reveals the unknown genotype. If all offspring show the dominant phenotype, the unknown parent is homozygous dominant; if a 1:1 ratio appears, it is heterozygous.
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Urdu QUESTION #5276
Question 3888
Ψ§ΫŒΩ† Ψ§ΫŒΩ… Ψ±Ψ§Ψ΄Ψ― Ϊ©Ψ§ Ψ§Ψ΅Ω„ Ω†Ψ§Ω… کیا Ψͺھا؟
  • Ω†ΩˆΨ± Ω…Ψ­Ω…Ψ― Ψ±Ψ§Ψ΄Ψ―
  • Ω†ΨΈΨ± Ω…Ψ­Ω…Ψ― Ψ±Ψ§Ψ΄Ψ―βœ”οΈ
  • Ω†Ψ°ΫŒΨ± Ω…Ψ³ΨΉΩˆΨ― Ψ±Ψ§Ψ΄Ψ―
  • Ω†ΩˆΨ± Ω…Ψ³ΨΉΩˆΨ― Ψ±Ψ§Ψ΄Ψ―
Correct Answer Logic:
Ψ§ΫŒΩ† Ψ§ΫŒΩ… Ψ±Ψ§Ψ΄Ψ― Ϊ©Ψ§ Ψ§Ψ΅Ω„ Ω†Ψ§Ω… Ω†ΨΈΨ± Ω…Ψ­Ω…Ψ― Ψ±Ψ§Ψ΄Ψ― ہے (Ψ’ΩΎΨ΄Ω† 1 ΩΎΨ± Ω†ΨΈΨ± Ω…Ψ­Ω…Ψ― Ψ±Ψ§Ψ΄Ψ― ہے)Ϋ”
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English QUESTION #690
Question 3889
What is the symbolic meaning of the "Scarlet Letter" (A)?
  • Adulteryβœ”οΈ
  • Atonement
  • Ambition
  • None of these
Correct Answer Logic:
Initially standing for "Adultery," the letter's meaning shifts throughout the novel to "Able" and "Angel."
Uploaded by: Fani Warraich
Basic Mathematics QUESTION #2878
Question 3890
A batsman scores $35, 45, 37$ and $43$ runs in four innings. What is his average?
  • 38
  • 40βœ”οΈ
  • 42
  • 45
Correct Answer Logic:
Sum $= 160$. Average $= 160 / 4 = 40$.
Uploaded by: Fani Warraich
Chemistry QUESTION #1432
Question 3891
Potentiometric titration involves measurement of:
  • Current in the reaction
  • Volume at equivalence
  • Electrode potential as a function of titrant addedβœ”οΈ
  • None of these
Correct Answer Logic:
Potentiometric titration involves monitoring the electrode potential (voltage) of the solution as a function of the volume of titrant added. The equivalence point is identified by a sharp change (inflection point) in the potential-volume curve. It uses a reference electrode and an indicator electrode immersed in the analyte solution, and is particularly useful for coloured or turbid solutions.
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Pakistan Affairs QUESTION #600
Question 3892
Durand Agreement (British India & Afghanistan) signed in:
  • August 1842
  • November 1893βœ”οΈ
  • May 1879
  • None of These
Correct Answer Logic:
The agreement was signed on November 12, 1893, between Sir Mortimer Durand and Amir Abdur Rahman Khan.
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MCQs Section QUESTION #4845
Question 3893
Pick the word nearly opposite in meaning to "TURBID"
  • Muddy
  • Clearβœ”οΈ
  • Invariable
  • Improbable
Correct Answer Logic:
Turbid means cloudy, opaque, or muddy, especially referring to liquid. Its antonym is 'clear,' meaning transparent and free from cloudiness.
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Physics QUESTION #1166
Question 3894
The internal energy of an ideal gas is __________ dependent.
  • Pressure
  • Temperatureβœ”οΈ
  • Volume
  • All of these
Correct Answer Logic:
For an ideal gas, the internal energy depends only on temperature. This is because ideal gas molecules have no intermolecular forces and therefore no potential energy β€” only kinetic energy which is proportional to temperature: \(U = nC_vT\). It is independent of pressure and volume.
Uploaded by: Fani Warraich
Mechanical Engineering QUESTION #2549
Question 3895
A couple acting on a rigid body is classified as which type of vector?
  • Bound vector β€” must act at a specific point
  • Sliding vector β€” must act along its line of action
  • Free vector β€” can be placed anywhere without changing its effectβœ”οΈ
  • Fixed vector β€” its point of application is immovable
Correct Answer Logic:
A couple is a free vector because its effect on a rigid body (pure rotation) is the same regardless of where the couple is applied. This contrasts with a force (sliding vector) whose line of action matters.
Uploaded by: Fani Warraich
Physics QUESTION #1063
Question 3896
Parallel plate capacitor, plates separated by \(d\). Two dielectric slabs: \(K_1\) with thickness \(\frac{3d}{8}\) and \(K_2\) with thickness \(\frac{d}{2}\). Capacitance becomes twice that of air capacitor. If \(K_1=1.25K_2\), value of \(K_1\) is:
  • 1.60
  • 1.33
  • 2.66βœ”οΈ
  • 2.33
Correct Answer Logic:
Air gap remaining: \(d - \frac{3d}{8} - \frac{d}{2} = \frac{d}{8}\). Effective capacitance (slabs in series): \(\frac{1}{C_{eff}}=\frac{3d/8}{K_1\varepsilon_0 A}+\frac{d/2}{K_2\varepsilon_0 A}+\frac{d/8}{\varepsilon_0 A}\). Setting \(C_{eff}=2C_0=\frac{2\varepsilon_0 A}{d}\): \(\frac{d}{2\varepsilon_0 A}=\frac{3d/8}{K_1\varepsilon_0 A}+\frac{d/2}{K_2\varepsilon_0 A}+\frac{d/8}{\varepsilon_0 A}\). \(\frac{1}{2}=\frac{3}{8K_1}+\frac{1}{2K_2}+\frac{1}{8}\). With \(K_1=1.25K_2\): solving gives \(K_1\approx2.66\).
Uploaded by: Fani Warraich
Reading and Writing (Module-1) QUESTION #5417
Question 3897
Geoscientists have long considered Hawaii's Mauna Loa volcano to be Earth's largest shield volcano by volume, measuring approximately 74,000 cubic kilometers. _______ according to a 2020 study by local geoscientist Michael Garcia, Hawaii's Pūhāhonu shield volcano is significantly larger, boasting a volume of about 148,000 cubic kilometers. Which choice completes the text with the most logical transition?
  • Secondly,
  • Consequently,
  • Moreover,
  • However,βœ”οΈ
Correct Answer Logic:
'However' signals a contrast between the previous belief about Mauna Loa and the new finding about Pūhāhonu.
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Chemistry QUESTION #428
Question 3898
__________ extraction is controlled by partition law.
  • Iodine
  • Benzoic acid
  • Solventβœ”οΈ
  • Stationery
Correct Answer Logic:
Solvent extraction follows partition law
Uploaded by: Fani Warraich
Agronomy QUESTION #2097
Question 3899
Phosphorus cycling in agricultural soils differs fundamentally from nitrogen cycling because:
  • Phosphorus has a significant atmospheric reservoir like nitrogen
  • Phosphorus has no atmospheric reservoir β€” it cycles exclusively through soil-plant-organic matter pathways, and its availability is controlled by soil pH-dependent precipitation/dissolution reactions and biological mineralization of organic Pβœ”οΈ
  • Phosphorus is more mobile in soils than nitrogen and prone to leaching in all soil types
  • Phosphorus transformations are driven by the same microbial guilds (Nitrosomonas, Nitrobacter) that drive nitrogen cycling
Correct Answer Logic:
Unlike N (atmospheric reservoir, gaseous transformations), P cycles in a closed soil-plant system with no atmospheric component. Soil P exists as: soil solution P (plant-available, <1 ppm), labile P (loosely sorbed), non-labile P (strongly sorbed/precipitated), and organic P. Availability is highly pH-dependent: maximum at pH 6.0–6.5; precipitated as Ca-phosphates at high pH and Fe/Al-phosphates at low pH.
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Tourism &amp; Hospitality Management QUESTION #1652
Question 3900
According to the HRM course, 'Pay for Performance (PFP)' systems in hospitality organizations involve which of the following plan types covered in the curriculum?
  • Only annual salary increments based on years of service
  • Individual PFP plans (merit pay and incentive systems), Group Incentive Plans, and Managerial and Executive Incentive Pay β€” with determinants of effective PFP and legal implicationsβœ”οΈ
  • Guaranteed hourly wage increases tied to inflation rates
  • Commission-only compensation for all hotel departments
Correct Answer Logic:
Module 8 of the HRM course covers Pay for Performance comprehensively: determinants of effective PFP, main problems with PFP, legal implications, individual PFP plans (merit pay and incentive systems), group incentive plans, and managerial/executive incentive pay β€” covering the full spectrum of performance-linked compensation applicable in hospitality organizations.
Uploaded by: Fani Warraich
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