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Study questions platform-wide or filter by specific tests with correct answers revealed.
Agronomy
QUESTION #2108
Question 501
Agroecology as a scientific discipline and practice differs from conventional agronomy in that:
Correct Answer Logic:
Agroecology (Altieri, Gliessman) integrates ecology, agronomy, and social sciences to design farming systems that mimic natural ecosystem functioning โ maximizing internal biological processes (BNF, natural pest regulation, nutrient cycling through diversity) to reduce dependence on external inputs. It spans three dimensions: science (ecological principles), practice (farming methods), and movement (food systems transformation and farmer empowerment).
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Geography
QUESTION #1239
Question 502
What is 'Metadata'?
Correct Answer Logic:
Metadata is literally 'data about data' โ it describes the characteristics, context, quality, and structure of a dataset. In GIS, metadata provides information about a spatial dataset such as its source, projection, scale, date of creation, and accuracy. It helps users understand and properly use the data without examining the data itself.
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Chemistry
QUESTION #4347
Question 503
Which of the following best explains why phenol reacts with aqueous $NaOH$, but alcohols do not?
Correct Answer Logic:
Phenol ($C_6H_5OH$) is acidic ($pK_a \approx 10$) because the phenoxide ion ($C_6H_5O^-$) is stabilized by resonance with the benzene ring. Alcohols are not acidic enough to react with $NaOH$.
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Paper-II (Pharmacology and Social Behaviour, Law & Ethics and Computer Sciences)
QUESTION #5759
Question 504
The mechanism of action for Tubocurarine involves:
Correct Answer Logic:
Tubocurarine is a non-depolarizing (competitive) blocker of nicotinic receptors.
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General Knowledge
QUESTION #8276
Question 505
In computer networking, what does the term WAP service refer to?
Correct Answer Logic:
WAP (Wireless Application Protocol) is related to wireless networking.
Uploaded by: Fani Warraich
Math Physics Chemistry Biology
QUESTION #7745
Question 506
The genetic information inherited from your parents for a specific trait like hair color is called your:
Correct Answer Logic:
Genotype refers to the actual alleles present (e.g., BB, Bb, bb). Phenotype is the physical expression. Karyotype is the chromosome set.
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Correct Answer Logic:
The integrand can be written as \(\frac{d}{dx}\!\left[e^x \cdot \frac{x\sin^{-1}x}{\sqrt{1-x^2}}\right]\). So \(g(x)=e^x\cdot\frac{x\sin^{-1}x}{\sqrt{1-x^2}}\). At \(x=\frac{1}{2}\): \(g\!\left(\frac{1}{2}\right)=e^{1/2}\cdot\frac{\frac{1}{2}\cdot\frac{\pi}{6}}{\frac{\sqrt{3}}{2}}=\frac{\pi}{6}\sqrt{e^3}\) after simplification.
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Chemistry
QUESTION #1009
Question 508
The molar solubility (\(s\)) of zirconium phosphate with formula \((\text{Zr}^{4+})_3(\text{PO}_4^{3-})_4\) is given by the relation:
Correct Answer Logic:
Dissolution: \(\text{Zr}_3(\text{PO}_4)_4 \rightleftharpoons 3\text{Zr}^{4+} + 4\text{PO}_4^{3-}\). If solubility \(= s\): \([\text{Zr}^{4+}]=3s\), \([\text{PO}_4^{3-}]=4s\). \(K_{sp} = (3s)^3(4s)^4 = 27s^3 \cdot 256s^4 = 6912\,s^7\). So \(s = \left(\dfrac{K_{sp}}{6912}\right)^{1/7}\).
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General Knowledge
QUESTION #8810
Question 509
What is the daily calorie requirement recommended by the UN for an average young man?
Correct Answer Logic:
The UN recommends approximately 2,200 calories per day.
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General Abilities
QUESTION #7942
Question 510
A mixture contains alcohol and water in the ratio 12:5. After adding 14 litres of water, the ratio of alcohol to water becomes 4:3. Find the quantity of alcohol in the mixture.
Correct Answer Logic:
Let alcohol \(= 12k\) and water \(= 5k\).
After adding 14 litres of water: \(\dfrac{12k}{5k+14} = \dfrac{4}{3}\)
\(36k = 20k + 56 \Rightarrow 16k = 56 \Rightarrow k = 3.5\)
Alcohol \(= 12 \times 3.5 = 42\) litres... Hmm โ rechecking with answer key (B=24): Let alcohol \(= 12k\), water \(= 5k\). \(\dfrac{12k}{5k+14} = \dfrac{4}{3} \Rightarrow k=3.5\), alcohol\(=42\). None of the options match exactly; the answer key gives B (24 litres). Review the original ratio carefully.
After adding 14 litres of water: \(\dfrac{12k}{5k+14} = \dfrac{4}{3}\)
\(36k = 20k + 56 \Rightarrow 16k = 56 \Rightarrow k = 3.5\)
Alcohol \(= 12 \times 3.5 = 42\) litres... Hmm โ rechecking with answer key (B=24): Let alcohol \(= 12k\), water \(= 5k\). \(\dfrac{12k}{5k+14} = \dfrac{4}{3} \Rightarrow k=3.5\), alcohol\(=42\). None of the options match exactly; the answer key gives B (24 litres). Review the original ratio carefully.
Uploaded by: Fani Warraich
Electrical Engineering
QUESTION #2170
Question 511
A lossy transmission line has $R = 0.1\,\Omega/\text{m}$, $G = 0.01\,\text{S/m}$, $L = 1\,\mu\text{H/m}$, $C = 1\,\text{nF/m}$. Is the Heaviside distortionless condition $RC = GL$ satisfied?
Correct Answer Logic:
$RC = 0.1 \times 10^{-9} = 10^{-10}$. $GL = 0.01 \times 10^{-6} = 10^{-8}$. Since $RC \ne GL$, the distortionless condition is NOT satisfied.
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Paper-II (Pharmacognosy and Pharmaceutics-I)
QUESTION #2970
Question 512
The 'Displacement Value' is a concept used in the calculation of which dosage form?
Correct Answer Logic:
Displacement value is the quantity of a drug that displaces $1\text{ g}$ of the suppository base.
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General Knowledge
QUESTION #176
Question 513
Trump has threatened to take control of the Panama Canal due to:
Correct Answer Logic:
This refers to political rhetoric regarding Chinese influence over the canal.
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Paper-II (Pharmacognosy and Pharmaceutics-I)
QUESTION #3663
Question 514
'Latex' is a milky fluid found in special cells called:
Biology Zoology Botany
QUESTION #1382
Question 515
Which of the following is NOT a characteristic of algae?
Correct Answer Logic:
Not all algae are microscopic โ this is the FALSE statement. Giant kelp (Macrocystis pyrifera) can grow up to 60 metres long. Algae are autotrophic (mostly), lack true roots/stems/leaves (they have thallus), and can be unicellular or multicellular. The statement that 'all algae are microscopic' is incorrect.
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Statistics
QUESTION #1957
Question 516
The sum of absolute deviations \(\sum |X - A|\) is minimized when deviations are taken from which measure?
Correct Answer Logic:
The sum of absolute deviations \(\sum |X - A|\) is least (minimum) when deviations are measured from the Median. This is a fundamental property of the median.
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Accounting & Finance
QUESTION #9630
Question 517
The Debtors Control Account had an opening balance of Rs. 70,000. Credit sales for May were Rs. 26,000, sales returns Rs. 3,400, cash/cheques received from debtors Rs. 46,000, and discounts allowed Rs. 3,700. What is the closing balance of the Debtors Control Account?
Correct Answer Logic:
Debtors Control Account: Opening Dr. 70,000 + Credit Sales 26,000 = 96,000. Less: Returns 3,400 + Receipts 46,000 + Discounts 3,700 = 53,100. Closing balance = 96,000 โ 53,100 = Rs. 42,900.
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Tourism & Hospitality Management
QUESTION #1656
Question 518
The Emerging Trends course covers 'the future of global aviation' including commercial jetliner history and forecasts. Which aspect of airline industry dynamics is specifically addressed in the curriculum?
Correct Answer Logic:
Module 6 of the Emerging Trends course โ 'Future of Global Aviation' โ specifically covers: Commercial Jetliners history and forecast, Companies and Airlines competitive landscape, Negotiation positions, and Negotiation options โ examining how airline manufacturers, lessors, and airlines negotiate fleet decisions and how these shape the future capacity and connectivity of global tourism.
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Electrical Engineering
QUESTION #2188
Question 519
For an FM signal with carrier $f_c = 100\,\text{MHz}$, modulating frequency $f_m = 10\,\text{kHz}$, and peak frequency deviation $\Delta f = 75\,\text{kHz}$, the modulation index $\beta$ and Carson's rule bandwidth are:
Correct Answer Logic:
$\beta = \Delta f/f_m = 75/10 = 7.5$. Carson's rule: $BW = 2(\Delta f + f_m) = 2(75+10) = 2\times85 = 170\,\text{kHz}$.
Uploaded by: Fani Warraich
Dairy Food Science and Technology
QUESTION #5889
Question 520
Starter culture failure in yoghurt production resulting in high pH and no coagulation is MOST likely caused by:
Correct Answer Logic:
Antibiotic residues (penicillin, tetracyclines) from treated cows inhibit lactic acid bacteria (LAB) at very low concentrations. Even sub-MIC levels cause slow acidification, which is a major cause of starter failure. Milk must be tested for antibiotics before fermentation.
Uploaded by: Fani Warraich
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