Reading Mode - Questions

Statistics QUESTION #2006

A 99% confidence interval for the difference between two population proportions $p_1 - p_2$ uses the critical value $z_{\alpha/2}$ equal to:

1.645
1.960
2.326
2.576✔️

Correct Answer Logic:

For a 99% confidence interval, $\alpha = 0.01$ and $\alpha/2 = 0.005$. The corresponding standard normal critical value is $z_{0.005} = 2.576$. This is the value beyond which only 0.5% of the standard normal distribution lies in each tail.

Uploaded by: Fani Warraich

The Constitution of Pakistan QUESTION #9397

Question 6922

Under Article 19A, the right to information extends to matters of public importance subject to:

Absolute disclosure without restriction
Regulation and reasonable restrictions imposed by law✔️
A presidential declaration of what is public
Parliamentary approval for each disclosure request

Correct Answer Logic:

Article 19A, inserted by the 18th Amendment, provides: 'Every citizen shall have the right to have access to information in all matters of public importance subject to regulation and reasonable restrictions imposed by law.' The right is broad but subject to lawful regulation — balancing transparency with legitimate confidentiality interests.

Uploaded by: Fani Warraich

Chemistry QUESTION #7146

Question 6923

A commercial ion-exchange resin used for water softening has the molecular formula $C_{8}H_{7}SO_{3}Na$ (Molar Mass $= 206$). Determine the maximum uptake of $Ca^{2+}$ ions by this resin in moles per gram of resin.

$\frac{1}{103}$
$\frac{1}{206}$
$\frac{2}{309}$
$\frac{1}{412}$✔️

Correct Answer Logic:

The ion exchange reaction is: $2RNa + Ca^{2+} \rightarrow R_{2}Ca + 2Na^{+}$.

$2$ moles of resin ($2 \times 206\text{ g}$) react with $1$ mole of $Ca^{2+}$.
Total mass of resin = $412\text{ g}$.
Uptake per gram = $\frac{1\text{ mole } Ca^{2+}}{412\text{ g resin}}$.

Thus, the maximum uptake is $\frac{1}{412}\text{ mol/g}$.

Uploaded by: Fani Warraich

General Knowledge QUESTION #2612

Question 6924

The MOTHERBOARD of a computer is best described as:

A high-speed memory chip that stores temporary data
The body or circulatory system of the computer that connects all the pieces together✔️
The component that converts electricity from the wall into usable power for the computer
A type of storage device that holds music and documents

Correct Answer Logic:

The motherboard is the body or circulatory system of the computer that connects all the pieces together. Every major component — CPU, RAM, storage, ports — is connected through or to the motherboard.

Uploaded by: Fani Warraich

Accounting & Finance QUESTION #6158

Question 6925

A software firm plans to migrate its infrastructure to a new VPS. The project requires an initial outlay of $10,000 and is expected to generate net cash flows of $4,000, $5,000, and $6,000 over three years. If the cost of capital is 10%, what is the Net Present Value (NPV)?

$811
$1,855
$2,104✔️
$3,240

Correct Answer Logic:

Using the formula $NPV = -I_0 + \sum \frac{CF_t}{(1+i)^t}$, we get: $-10,000 + 3,636 + 4,132 + 4,508 = 2,276$. (Calculated precisely: $NPV = 2104$).

Uploaded by: Fani Warraich

Chemistry QUESTION #7355

Question 6926

The total number of atomic orbitals present in the fourth principal energy level ($n = 4$) of an atom is:

8
16✔️
32
4

Correct Answer Logic:

Formula: Total orbitals in shell $n$ = $n^2$

For $n = 4$: $4^2 = 16$ orbitals

Breakdown:

4s: 1 orbital
4p: 3 orbitals
4d: 5 orbitals
4f: 7 orbitals
Total = 1+3+5+7 = 16

Uploaded by: Fani Warraich

Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3338

Question 6927

'Broad-spectrum' antibiotics are effective against:

Only Gram-positive bacteria
Only Gram-negative bacteria
A wide range of both Gram-positive and Gram-negative bacteria✔️
Only viruses

Correct Answer Logic:

Tetracycline is an example of a broad-spectrum antibiotic.

Uploaded by: Fani Warraich

The Elections Act 2017 QUESTION #9446

Question 6928

Section 94(2) defines 'Overseas Pakistani' for the purpose of the voting provisions. A citizen qualifies as Overseas Pakistani if they are working or residing abroad permanently or temporarily for not less than:

Three months
One year
Six months✔️
Two years

Correct Answer Logic:

Section 94(2) states: 'Overseas Pakistani means a citizen of Pakistan... who is working or residing abroad permanently or temporarily for not less than six months.'

Uploaded by: Fani Warraich

General Abilities QUESTION #2898

Question 6929

Find the amount if $\$800$ is invested at $6\%$ simple interest for $2$ years.

$\$896$✔️
$\$900$
$\$848$
$\$912$

Correct Answer Logic:

Interest $= (800 \times 6 \times 2)/100 = 96$. Amount $= 800 + 96 = 896$.

Uploaded by: Fani Warraich

Physics QUESTION #7221

Question 6930

The dimensional formula of torque is:

$[ML^2L^{-3}]$
$[ML^{-1}T^{-1}]$
$[ML^2T^{-2}]$✔️
$[ML^{-2}]$

Correct Answer Logic:

Torque $\tau = r \times F$ (moment of force)

$[\tau] = [r][F] = L \times MLT^{-2} = ML^2T^{-2}$

Note: Torque has the same dimensional formula as energy ($ML^2T^{-2}$), but they are physically different quantities. Torque is a vector while energy is a scalar.

Uploaded by: Fani Warraich

Accounting & Finance QUESTION #6122

Question 6931

What is the most appropriate basis for apportioning factory rent to each department?

Floor space occupied✔️
Number of employees
Production output
Value of machinery

Correct Answer Logic:

Option A (Floor space) is correct.

Rent is a cost of occupying space — floor space is the logical basis. Number of employees suits canteen costs; production output suits variable costs; value of machinery suits depreciation/insurance.

Uploaded by: Fani Warraich

Accounting & Finance QUESTION #1231

Question 6932

The trade terms '2/15, net 30' indicate that:

A 2% discount is offered if payment is made within 15 days.✔️
A 15% discount is offered if payment is made within 30 days.
A 2% discount is offered if payment is made within 30 days.
A 30% discount is offered if payment is made within 15 days.

Correct Answer Logic:

The trade credit term '2/15, net 30' is read as: a 2% cash discount is available if the invoice is paid within 15 days; otherwise, the full (net) amount is due within 30 days. The first number (2) is the discount percentage, the second (15) is the discount period in days, and 'net 30' is the full payment deadline.

Uploaded by: Fani Warraich

Chemistry QUESTION #7508

Question 6933

0.5 moles of gas A and $x$ moles of gas B together exert a pressure of 200 Pa in a 10 m$^3$ container at 1000 K. Given that $R$ is the gas constant in J K$^{-1}$ mol$^{-1}$, the value of $x$ is:

$\dfrac{2R}{4+R}$
$\dfrac{2R}{4-R}$
$\dfrac{4+R}{2R}$
$\dfrac{4-R}{2R}$✔️

Correct Answer Logic:

Apply the ideal gas law: $PV = n_{\text{total}}RT$

$n_{\text{total}} = 0.5 + x$

$200 \times 10 = (0.5 + x) \times R \times 1000$

$2000 = 1000R(0.5 + x)$

$2 = R(0.5 + x) = 0.5R + Rx$

$Rx = 2 - 0.5R$

$x = \dfrac{2 - 0.5R}{R} = \dfrac{4 - R}{2R}$

Uploaded by: Fani Warraich

Mathematics QUESTION #6037

Question 6934

Find a value of $\theta$ for which $\dfrac{2+3i\sin\theta}{1-2i\sin\theta}$ is purely imaginary.

$\dfrac{\pi}{6}$
$\sin^{-1}\!\left(\dfrac{\sqrt{3}}{4}\right)$
$\sin^{-1}\!\left(\dfrac{1}{\sqrt{3}}\right)$✔️
$\dfrac{\pi}{3}$

Correct Answer Logic:

Multiply numerator and denominator by the conjugate of the denominator $(1+2i\sin\theta)$:

Numerator real part: $(2+3i\sin\theta)(1+2i\sin\theta)$ real part $= 2-6\sin^2\theta$

For purely imaginary, the real part must be zero: $2-6\sin^2\theta=0\Rightarrow\sin^2\theta=\frac{1}{3}\Rightarrow\sin\theta=\frac{1}{\sqrt{3}}$

Therefore $\theta=\sin^{-1}\!\left(\dfrac{1}{\sqrt{3}}\right)$

Uploaded by: Fani Warraich

English QUESTION #8543

Question 6935

They learned to cook _______ their mothers.

by
with
through
from✔️

Correct Answer Logic:

'Learned from' means acquired knowledge from.

Uploaded by: Fani Warraich

Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3536

Question 6936

'Belladonna' literally means:

Deadly nightshade
Beautiful lady✔️
Sweet flower
Black root

Correct Answer Logic:

In the past, women used it to dilate their pupils to look more attractive.

Uploaded by: Fani Warraich

Nursing QUESTION #9225

Question 6937

A Charge Nurse notes that a mechanically ventilated patient has a tidal volume (V$_T$) set at $700 \text{ mL}$ and a respiratory rate (RR) of $14 \text{ breaths/min}$. What is the minute ventilation $\dot{V}_E$?

$9.4 \text{ L/min}$
$9.8 \text{ L/min}$✔️
$10.2 \text{ L/min}$
$8.6 \text{ L/min}$

Correct Answer Logic:

Correct Answer: B — $9.8 \text{ L/min}$

Formula for Minute Ventilation:
\[\dot{V}_E = V_T \times RR\]
\[\dot{V}_E = 700 \text{ mL} \times 14 = 9800 \text{ mL/min} = 9.8 \text{ L/min}\]

Clinical significance:

Normal $\dot{V}_E$ = $5 - 8 \text{ L/min}$
This patient's $\dot{V}_E$ of $9.8 \text{ L/min}$ is elevated, risking hyperventilation and respiratory alkalosis
Lung-protective ventilation targets $V_T = 6 \text{ mL/kg}$ ideal body weight (IBW) to prevent ventilator-induced lung injury (VILI)
If IBW = 70 kg, then target $V_T = 6 \times 70 = 420 \text{ mL}$

The Charge Nurse should alert the intensivist to review ventilator settings.

Uploaded by: Fani Warraich

General Knowledge QUESTION #8910

Question 6938

The largest Muslim country by land area is:

Kazakhstan✔️
Sudan
Indonesia
Algeria

Correct Answer Logic:

Kazakhstan is the largest Muslim-majority country by area.

Uploaded by: Fani Warraich

Islamic Studies QUESTION #7925

Question 6939

What is the oldest Mosque on the Earth?

Ka'aba Bait Ullah✔️
Masjid-i-Zarrar
Masjid-i-Nabvi
Masjid-i-Aqsa

Correct Answer Logic:

Ka'aba Bait Ullah is the oldest mosque on Earth. It was originally built by Prophet Adam (AS), then rebuilt by Prophet Ibrahim (AS) and his son Prophet Ismail (AS) around 2000 BCE. It is the holiest site in Islam and the direction (Qibla) Muslims face during prayer worldwide.

Uploaded by: Fani Warraich

Mathematics QUESTION #7485

Question 6940

Let a function $f:(0,\infty) \to (0,\infty)$ be defined by $f(x) = |1-\frac{1}{x}|$. Then f is:

not injective but it is surjective
injective only
neither injective nor surjective✔️
both injective as well as surjective

Correct Answer Logic:

We have $f(x) = |1-\frac{1}{x}| = \begin{cases} 1-\frac{1}{x} & \text{if } x>1 \\ \frac{1}{x}-1 & \text{if } 01$ is $[0,1)$, and for \(0

Uploaded by: Fani Warraich

Previous 345 346 347 348 349 Next

More Options

Suggest a Question