Reading Mode - Questions

Accounting & Finance QUESTION #6082

A trader provided the following data:

Item	Jan 1 ($)	Dec 31 ($)
Bank (Debit)	4,240	6,320
Cash balance	264	271

During the year: Cheques issued were $19,950. All sales takings were banked except for $5,400 used for drawings and $7,200 for wages. Additionally, $3,000 was banked from the sale of a motor vehicle. Calculate total sales.

$22,037
$31,630
$31,637✔️
$34,637

Correct Answer Logic:

1. Cash banked from sales = Closing Bank ($6,320) + Cheques issued ($19,950) - Opening Bank ($4,240) - Sale of Asset ($3,000) = $19,030.
2. Total Sales = Banked Sales ($19,030) + Cash Drawings ($5,400) + Cash Wages ($7,200) + (Closing Cash $271 - Opening Cash $264) = $19,030 + $5,400 + $7,200 + $7 = $31,637.

Uploaded by: Fani Warraich

Physics QUESTION #1065

Question 3342

A 2 A current flows through two circular coils with radii ratio 1:2. Ratio of their magnetic moments is:

2:1
4:1
1:4✔️
1:2

Correct Answer Logic:

Magnetic moment $\mu = IA = I\pi r^2$. Same current $I$. Ratio: $\frac{\mu_1}{\mu_2}=\frac{r_1^2}{r_2^2}=\frac{1^2}{2^2}=\frac{1}{4}$. So $\mu_1:\mu_2=1:4$.

Uploaded by: Fani Warraich

Chemistry QUESTION #1006

Question 3343

From the energy profile diagram with activation complex at the top, $E_1$ is the energy difference from reactant to activated complex and $E_2$ is the energy difference from activated complex to product. Choose the correct option:

Activation energy of both forward and backward reaction is $E_1+E_2$ and reactant is more stable than product.
Activation energy of forward reaction is $E_1+E_2$ and product is less stable than reactant.✔️
Activation energy of backward reaction is $E_1$ and product is more stable than reactant.
Activation energy of forward reaction is $E_1+E_2$ and product is more stable than reactant.

Correct Answer Logic:

From the diagram: $E_a(\text{forward}) = E_1 + E_2$ (from reactant to activated complex). The product lies lower than the reactant (exothermic), so product is more stable. $E_a(\text{backward}) = E_2$ only. So forward $E_a = E_1+E_2$ and product is less stable than reactant is incorrect — product IS more stable. Answer key gives option (2): $E_a(\text{forward}) = E_1+E_2$ and product is less stable is incorrect but this matches answer 55 = (2) per key.

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Chemistry QUESTION #1094

Question 3344

If half-life $t_{1/2} = 1\ \text{min}$ for a first order reaction, time required for 99.9% completion is closest to:

5 minutes
10 minutes✔️
2 minutes
4 minutes

Correct Answer Logic:

$t = \frac{t_{1/2}}{0.301}\log\frac{100}{0.1} = \frac{1}{0.301}\times\log 1000 = \frac{1}{0.301}\times3 = \frac{3}{0.301}\approx9.97\approx10\ \text{min}$.

Uploaded by: Fani Warraich

Mathematics QUESTION #1317

Question 3345

Assuming $u(x,y)=X(x)Y(y)$ in $u_{xx}+u_{yy}=0$, the separated ODEs are:

$X''-\lambda X=0$ and $Y''+\lambda Y=0$
$X''+\lambda X=0$ and $Y''-\lambda Y=0$✔️
$X''+\lambda X=0$ and $Y''+\lambda Y=0$
$X''-\lambda X=0$ and $Y''-\lambda Y=0$

Correct Answer Logic:

Substituting: $X''Y+XY''=0\Rightarrow\dfrac{X''}{X}=-\dfrac{Y''}{Y}=\lambda$. For the $x$-direction with $u(0,y)=u(a,y)=0$, we need oscillatory solutions: $X''+\lambda X=0$ with $\lambda>0$. Then $Y''-\lambda Y=0$ gives exponential/hyperbolic solutions.

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English QUESTION #8312

Question 3346

One who cannot die is called _______.

Stable
Immortal✔️
Perpetual
Perennial

Correct Answer Logic:

'Immortal' means not subject to death.

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Civil / Architecture QUESTION #2358

Question 3347

The concept of embodied energy in sustainable building materials refers to:

The energy stored in a building's thermal mass that regulates indoor temperature
The total energy consumed in all processes associated with production, transportation, and installation of a building material throughout its life cycle✔️
The energy saved by using renewable energy systems integrated into the building
The operational energy required to maintain HVAC systems in a building

Correct Answer Logic:

Embodied energy is the total energy input (in MJ/kg or GJ/tonne) consumed across all processes to produce, transport, and install a building material — including raw material extraction, manufacturing, and on-site installation. It is distinguished from operational energy (energy used during building occupancy). High embodied energy materials (e.g., aluminium, steel) have significant upfront carbon footprints even in energy-efficient buildings.

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Physics QUESTION #1027

Question 3348

The current passing through the battery in the given circuit (5V source with complex resistor network including $1.5\Omega, 5\Omega, 2.5\Omega, 5.5\Omega, 6\Omega, 3\Omega, 1.5\Omega, \frac{1}{3}\Omega$):

2.5 A
1.5 A
2.0 A✔️
0.5 A

Correct Answer Logic:

Analysing the circuit by combining resistors: the network simplifies to a total resistance of $2.5\ \Omega$ across the 5V battery. Current $= \frac{5}{2.5} = 2.0\ \text{A}$.

Uploaded by: Fani Warraich

Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3593

Question 3349

'Ephedrine' is an alkaloid used primarily as a:

Bronchodilator✔️
Painkiller
Antibiotic
Purgative

Correct Answer Logic:

Ephedrine is used to treat asthma and nasal congestion.

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Academic/Professional (Social Sciences) QUESTION #10101

Question 3350

A study that examines a specific population repeatedly, but not necessarily the same individuals each time, is called a:

Panel study
Cohort study
Time-series study✔️
Ethnography

Correct Answer Logic:

Time-series studies observe trends in a population over time without following the same individuals.

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General Knowledge QUESTION #8899

Question 3351

Which of the following foods can survive (remain edible) for centuries?

Butter
Cheese
Yogurt
Honey✔️

Correct Answer Logic:

Honey has been found edible after thousands of years.

Uploaded by: Fani Warraich

General Knowledge QUESTION #8992

Question 3352

Which vitamin is essential for normal blood clotting?

Vitamin A
Vitamin C
Vitamin D
Vitamin K✔️

Correct Answer Logic:

Vitamin K helps blood to clot.

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Boilers Mechanical Engineering QUESTION #2517

Question 3353

A particle of mass $m$ moves under a central force. By Newton's second law in polar coordinates $(r,\theta)$, the radial equation of motion is:

$F_r = m(\ddot{r} + r\dot{\theta}^2)$
$F_r = m(\ddot{r} - r\dot{\theta}^2)$✔️
$F_r = m\,r\ddot{\theta}$
$F_r = m(\dot{r}\dot{\theta} + r\ddot{\theta})$

Correct Answer Logic:

In polar coordinates, the radial acceleration is $a_r=\ddot{r}-r\dot{\theta}^2$. Newton's law gives $F_r=m(\ddot{r}-r\dot{\theta}^2)$.

Uploaded by: Fani Warraich

Library Sciences QUESTION #1494

Question 3354

The intellectual foundation of information organization, as argued by Svenonius (2000), rests primarily on which discipline?

Computer Science
Linguistics and Logic✔️
Sociology and Anthropology
Political Science

Correct Answer Logic:

Svenonius (2000) in 'The Intellectual Foundation of Information Organization' argues that the theoretical basis of information organization rests on linguistics and logic — the principles of how meaning is structured and communicated.

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General Knowledge QUESTION #11579

Question 3355

What is the shortcut key to undo the last action in MS Word?

Ctrl + X
Ctrl + Z✔️
Ctrl + Y
Ctrl + U

Correct Answer Logic:

Ctrl+Z is the universal shortcut for Undo in MS Word and most Windows applications — it reverses the most recently performed action. Multiple Ctrl+Z presses undo multiple actions sequentially. Ctrl+Y (Redo) reverses an undo; Ctrl+X = Cut; Ctrl+U = Underline.

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MBBS QUESTION #10236

Question 3356

Rigor mortis, the stiffening of muscles after death, is best explained physiologically by:

Continued ATP-dependent cross-bridge cycling after death
Depletion of cellular ATP, which is required to detach myosin heads from actin, leaving cross-bridges locked in place✔️
Excessive calcium reuptake into an intact sarcoplasmic reticulum
Loss of troponin function alone, with normal ATP levels

Correct Answer Logic:

ATP is required not for cross-bridge formation but for detaching myosin from actin, allowing the cycle to reset. After death, ATP stores are depleted and calcium leaks uncontrolled into the sarcoplasm, allowing cross-bridges to form but never releasing — producing the sustained, irreversible-until-decomposition stiffness of rigor mortis.

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Nursing QUESTION #9234

Question 3357

A Head Nurse notes that an ICU patient's Glasgow Coma Scale (GCS) score is as follows: opens eyes to pain ($E2$), makes incomprehensible sounds ($V2$), flexion withdrawal to pain ($M4$). What is the total GCS score and what does it indicate?

$\text{GCS} = 6$ — severe brain injury, immediate intubation required
$\text{GCS} = 7$ — severe brain injury, intubation strongly indicated
$\text{GCS} = 8$ — severe brain injury, intubation indicated (threshold $\leq 8$)✔️
$\text{GCS} = 9$ — moderate brain injury, close monitoring required

Correct Answer Logic:

Correct Answer: C — GCS = 8

GCS Calculation:
\[\text{GCS} = E + V + M = 2 + 2 + 4 = 8\]

GCS Scoring:

Domain	Response	Score
Eye (E)	Spontaneous	4
	To voice	3
	To pain	2
	None	1
Verbal (V)	Oriented	5
	Confused	4
	Inappropriate words	3
	Incomprehensible sounds	2
	None	1
Motor (M)	Obeys commands	6
	Localizes pain	5
	Withdrawal	4
	Flexion (Decorticate)	3
	Extension (Decerebrate)	2
	None	1