Reading Mode - Questions

Agronomy QUESTION #2060

A lysimeter is used in agronomy primarily to:

Measure soil electrical conductivity to assess salinity
Directly measure actual evapotranspiration ($ET_a$) or drainage losses from an isolated soil-plant system under field conditions by monitoring changes in soil water mass or volume✔️
Measure the rate of nitrogen leaching from surface-applied urea
Determine the cation exchange capacity of soil in situ

Correct Answer Logic:

A lysimeter is an isolated soil block (weighing or drainage type) in which water inputs (rainfall, irrigation) and outputs (drainage, ET) are precisely measured. Weighing lysimeters detect changes in mass (converted to ET). They provide the most direct measurement of ET under actual crop conditions and are used to calibrate ET estimation equations.

Uploaded by: Fani Warraich

Chemistry QUESTION #5575

Question 10462

In Cannizzaro's reaction of trichloroacetaldehyde ($CCl_3CHO$) with NaOH, one product is sodium trichloroacetate. What is the other product?

Trichloromethanol
2,2,2-Trichloropropanol
Chloroform
2,2,2-Trichloroethanol✔️

Correct Answer Logic:

Cannizzaro reaction involves disproportionation of a non-enolizable aldehyde. $2CCl_3CHO + NaOH \to CCl_3COO^-Na^+\ (\text{sodium trichloroacetate}) + CCl_3CH_2OH\ (2{,}2{,}2\text{-trichloroethanol})$. One molecule is oxidized to the acid salt and the other is reduced to the alcohol.

Uploaded by: Fani Warraich

Boilers Mechanical Engineering QUESTION #4004

Question 10463

When performing a Hydraulic Test, why is 'Air' removed from the boiler completely?

Air is too expensive
Compressed air stores massive energy and can cause an explosion if the boiler fails✔️
Air makes the water turn green
Air helps the boiler to float

Correct Answer Logic:

Water is incompressible; if the vessel ruptures during a hydrotest, there is no 'blast' like there would be with air/steam.

Uploaded by: Fani Warraich

General Knowledge QUESTION #11540

Question 10464

Which of the following values is invalid in the binary number system?

001
101
202✔️
110

Correct Answer Logic:

202 is NOT a valid binary number. Binary (base-2) uses only digits 0 and 1. The digit '2' does not exist in binary. Valid binary numbers from options: 001 (decimal 1), 101 (decimal 5), and 110 (decimal 6). Binary is computers' native number system — electronic circuits have two states: on (1) and off (0).

Uploaded by: Fani Warraich

Accounting & Finance QUESTION #6132

Question 10465

Y Limited purchased a motor van with these costs: Purchase price $50,000; Delivery $4,500; Engine upgrade $6,000; 2-year maintenance contract $4,000; Annual licence fee $1,200. Depreciation: 20% straight-line. What are the total expenses in the statement of profit or loss?

$14,340
$15,300✔️
$17,300
$20,100

Correct Answer Logic:

Option B ($15,300) is correct.

Capital expenditure: $50,000 + $4,500 + $6,000 = $60,500

Depreciation = $60,500 × 20% = $12,100

Revenue expenditure: Maintenance (year 1 only) $4,000 ÷ 2 = $2,000 + Licence $1,200 = $3,200

Total expenses = $12,100 + $3,200 = $15,300

Uploaded by: Fani Warraich

Agronomy QUESTION #2042

Question 10466

Vermicompost differs from conventional FYM in that:

It has lower nutrient content and slower release rates
It is processed through earthworm digestion, resulting in finer particle size, higher microbial activity, better nutrient availability, plant growth hormones, and humic acids compared to conventional composting✔️
It can only be applied as a liquid foliar spray
It increases soil acidity more rapidly than FYM

Correct Answer Logic:

Earthworms (Eisenia fetida) physically and biochemically transform organic matter during vermicomposting. The product has higher N (1.5–2.5%), better C:N ratio, richer microbial diversity, plant hormones (auxins, gibberellins), humic/fulvic acids, and finer texture than FYM — resulting in better crop response per unit weight applied.

Uploaded by: Fani Warraich

General Knowledge QUESTION #11563

Question 10467

What does CRT stand for in display technologies?

Crystal Ray Tube
Cathode Ray Tube✔️
Cabin Ray Tube
Carbon Ray Tube

Correct Answer Logic:

CRT (Cathode Ray Tube) is a vacuum tube that fires electron beams onto a phosphorescent screen to create images. CRTs were the dominant display technology for TVs and computer monitors from the 1950s through the early 2000s, before being replaced by flat-panel LCD, LED, plasma, and OLED displays.

Uploaded by: Fani Warraich

Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3596

Question 10468

'Senna' and 'Aloe' belong to which chemical class of glycosides?

Saponin Glycosides
Anthraquinone Glycosides✔️
Cardiac Glycosides
Cyanophore Glycosides

Correct Answer Logic:

Anthraquinone glycosides are well known for their stimulant laxative properties.

Uploaded by: Fani Warraich

Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3347

Question 10469

'Lyophilization' is a process used for:

Killing microbes with heat
Freeze-drying to preserve microbial cultures✔️
Staining slides
Testing water

Correct Answer Logic:

Water is removed under vacuum while the sample is frozen, allowing for long-term storage.

Uploaded by: Fani Warraich

Biology Zoology Botany QUESTION #10799

Question 10470

Electric eels can deliver an electric shock in excess of:

50 volts
5000 volts
220 volts
500 volts✔️

Correct Answer Logic:

The electric eel (Electrophorus electricus) can generate electric discharges in excess of 500 volts (up to ~860 V in some accounts). These high-voltage discharges are produced by electrocytes — specialised muscle-derived cells stacked like batteries in the eel's electric organs. Discharges are used for prey stunning, navigation (electroreception), and predator defence. The electric organ constitutes up to 80% of the eel's body.

Uploaded by: Fani Warraich

HR and Management QUESTION #6444

Question 10471

The transformation from tall to flat organizational structures primarily reflects efforts to:

Reduce communication complexity
Become more competitive by reducing bureaucracy✔️
Increase specialization of roles
Enhance formal authority structures

Correct Answer Logic:

Organizations are flattening (reducing management levels between CEO and production workers) in an effort to become more competitive. The traditional middle management role has been equated with cumbersome bureaucracy that prevents businesses from responding to market forces.

Uploaded by: Fani Warraich

CISA QUESTION #1787

Question 10472

What is the most critical issue associated with transferring operational risk to an outsourced contractor?

There is potential for uncontrollable escalation in operating costs over time
Outsourcing transfers the entire risk burden to the contractor
The organization retains legal liability regardless of who performs the work✔️
Outsourcing protects the company from all inherent operational risks

Correct Answer Logic:

While organizations can delegate operational tasks through outsourcing, they cannot transfer legal liability. As demonstrated by global product recall cases, companies remain financially and legally responsible for failures caused by their subcontractors. Liability is an organizational obligation that cannot be outsourced.

Uploaded by: Fani Warraich

General Knowledge QUESTION #8935

Question 10473

Hamas, the Palestinian political and military organization, was founded by which leader?

Yasser Arafat
Sheikh Ahmed Yassin✔️
Khalid Mashaal
Ismail Haniyeh

Correct Answer Logic:

Sheikh Ahmed Yassin founded Hamas in 1987.

Uploaded by: Fani Warraich

English QUESTION #493

Question 10474

He lacked both the training and the equipment needed in the job.

He lacked both the training and the equipment needed in the job.
He lacked both the training and the equipment needed by the job.
He lacked both the training and the equipment needed on the job.
He lacked both the training and the equipment needed for the job.✔️

Correct Answer Logic:

'Needed for the job' is correct

Uploaded by: Fani Warraich

CISA QUESTION #1778

Question 10475

Which of the following conditions is INCORRECT when considering reliance on the work performed by another auditor or specialist?

Ensure the provider operates independently
Accept the work solely based on the provider's job title or position✔️
Confirm agreement on scope and methodology used
Provide adequate supervision and review of the work

Correct Answer Logic:

An auditor must never accept third-party work based solely on the individual's job title or organizational rank. Proper evaluation requires assessing the provider's independence, confirming their qualifications, agreeing on scope and procedures, and actively supervising and reviewing the work before relying on it.

Uploaded by: Fani Warraich

General Knowledge QUESTION #8867

Question 10476

Who presented the Law of Falling Bodies (gravity)?

Isaac Newton
Albert Einstein
Galileo Galilei✔️
Bertrand Russell

Correct Answer Logic:

Galileo studied falling bodies.

Uploaded by: Fani Warraich

Mathematics QUESTION #1324

Question 10477

In the variation of parameters method, the Wronskian of two solutions $y_1$ and $y_2$ is defined as:

$W=y_1y_2'+y_2y_1'$
$W=y_1y_2'-y_2y_1'$✔️
$W=y_1'-y_2'$
$W=y_1y_2$

Correct Answer Logic:

The Wronskian of two functions $y_1$ and $y_2$ is the determinant of the matrix of the functions and their derivatives: $W=\begin{vmatrix}y_1&y_2\\y_1'&y_2'\end{vmatrix}=y_1y_2'-y_2y_1'$. If $W\neq0$ on an interval, $y_1$ and $y_2$ are linearly independent.

Uploaded by: Fani Warraich

MBBS QUESTION #10360

Question 10478

Ammonia generated from amino acid catabolism throughout the body is transported (largely as glutamine and alanine) to the organ where it is converted to urea for excretion via the urea cycle. This organ is the:

Kidney
Liver✔️
Skeletal muscle
Brain

Correct Answer Logic:

The liver is the primary site of the urea cycle, converting toxic ammonia (delivered largely as glutamine from peripheral tissues and alanine from muscle via the glucose-alanine cycle) into water-soluble urea, which is then excreted by the kidneys.

Uploaded by: Fani Warraich

English QUESTION #485

Question 10479

Our flight was __________ from Lahore to Islamabad airport.

Diverted✔️
Reflected
Deflected
Shifted

Correct Answer Logic:

Flights are 'diverted'

Uploaded by: Fani Warraich

Physics QUESTION #7074

Question 10480

Consider the nuclear reaction: $^{20}Ne \rightarrow 2 ^{4}He + ^{12}C$. The binding energy per nucleon for $^{20}Ne$, $^{4}He$, and $^{12}C$ is $8.03 \text{ MeV}$, $7.07 \text{ MeV}$, and $7.86 \text{ MeV}$ respectively. Which statement regarding the energy of this reaction is true?

An energy of $12.4 \text{ MeV}$ must be supplied
$8.3 \text{ MeV}$ of energy is released
An energy of $3.6 \text{ MeV}$ is released
An energy of $11.9 \text{ MeV}$ must be supplied✔️

Correct Answer Logic:

Total Binding Energy ($BE$) of Reactant ($^{20}Ne$) $= 20 \times 8.03 = 160.6 \text{ MeV}$. Total $BE$ of Products $= (2 \times 4 \times 7.07) + (12 \times 7.86) = 56.56 + 94.32 = 150.88 \text{ MeV}$. The energy of the reaction ($Q$-value) is $BE_{products} - BE_{reactants} = 150.88 - 160.6 = -9.72 \text{ MeV}$. A negative value indicates energy must be supplied. The closest calculated value based on precise JEE data is $11.9 \text{ MeV}$.

Uploaded by: Fani Warraich

More Options

Suggest a Question