Reading Mode - Questions

Chemistry QUESTION #7126

What is the specific reaction intermediate formed during the addition of $HOCl$ (aqueous chlorine) to propene?

$CH_{3}-CH^{+}-CH_{2}-Cl$✔️
$CH_{3}-CH(OH)-CH_{2}^{+}$
$CH_{3}-CH(Cl)-CH_{2}^{+}$
$CH_{3}-CH^{-}-CH_{2}-Cl$

Correct Answer Logic:

The reaction follows Markovnikov's rule. The electrophile $Cl^+$ attacks the double bond of propene ($CH_3-CH=CH_2$) to form the more stable secondary carbocation: $CH_3-CH^+-CH_2-Cl$. Subsequently, the nucleophile $OH^-$ attacks this carbocation.

Uploaded by: Fani Warraich

Pakistan Affairs QUESTION #286

Question 3662

Why did Mahmud of Ghazni launch multiple invasions into India during the 11th century?

For territorial Expansion
For collecting economic resources✔️
For spreading Islam
For punishing Indian rulers

Correct Answer Logic:

His primary aim was to acquire the vast wealth of Indian temples to fund his Central Asian empire.

Uploaded by: Fani Warraich

Nursing QUESTION #9159

Question 3663

The Infant Mortality Rate (IMR) formula is:
\\text{IMR} = \\frac{\\text{Deaths of infants under 1 year}}{?} \\times 1000
What is the correct denominator?

Total population
Total deaths in the year
Number of live births in the same year✔️
Number of children under 5 years

Correct Answer Logic:

The Infant Mortality Rate (IMR) is calculated as:

\\text{IMR} = \\frac{\\text{Deaths under 1 year of age}}{\\text{Number of live births in the same period}} \\times 1000

IMR is one of the most sensitive indicators of population health status and socioeconomic development. Pakistan's IMR is approximately 55–60 per 1,000 live births, which remains higher than the SDG target. Community health nurses play a crucial role in reducing IMR through vaccination, nutrition counseling, and antenatal/postnatal care.

Uploaded by: Fani Warraich

Islamic Studies QUESTION #7903

Question 3664

What is the name of the prophet who is one of Hazrat Daus?

Hazrat Hood✔️
Hazrat Ishaq
Hazrat Sulaiman
Hazrat Yousuf

Correct Answer Logic:

Hazrat Hood (AS) was sent to the people of 'Ad (not Daus). He warned them against idol worship and called them to monotheism, but they rejected him. Eventually, they were destroyed by a fierce wind. Hazrat Hood (AS) is mentioned in the Quran, and Surah 11 is named after him.

Uploaded by: Fani Warraich

Nursing QUESTION #9209

Question 3665

In quantitative nursing research, what is the PRIMARY purpose of randomization in an experimental study?

To ensure the sample is large enough for statistical significance
To distribute known and unknown confounding variables equally between groups✔️
To eliminate all sources of measurement error
To guarantee that the study findings will be generalizable

Correct Answer Logic:

Correct Answer: B

Randomization is the process of randomly assigning participants to experimental or control groups. Its PRIMARY purpose is to:

Equally distribute both known and unknown confounding variables between groups

This ensures that any observed differences in outcomes can be attributed to the intervention rather than pre-existing group differences.

Key benefits of randomization:

Controls for selection bias
Distributes confounders (age, comorbidities, severity) evenly
Strengthens internal validity
Is the basis for the RCT — the gold standard of research design

Randomization does not eliminate measurement error (that requires reliability measures) or guarantee generalizability (that requires representative sampling).

Uploaded by: Fani Warraich

Maths QUESTION #4637

Question 3666

If the product of two numbers is $48$ and one number is $6$, what is the other?

$8$✔️
$42$
$54$
$288$

Correct Answer Logic:

Let other number = $x$. Then $6x = 48$, so $x = 8$

Uploaded by: Fani Warraich

Maths QUESTION #4630

Question 3667

If $5$ workers complete a job in $6$ days, how many days for $3$ workers (at same rate)?

$10$ days✔️
$3.6$ days
$9$ days
$18$ days

Correct Answer Logic:

Total work = $5 \times 6 = 30$ worker-days. For $3$ workers: $\frac{30}{3} = 10$ days

Uploaded by: Fani Warraich

English QUESTION #8293

Question 3668

Pick the correctly spelled word:

Contemporary✔️
Contemporary
Contemporary
Contemporary

Correct Answer Logic:

The correct spelling is 'Contemporary'. (Note: All options appear identical in PDF; first is correct.)

Uploaded by: Fani Warraich

Maths QUESTION #4634

Question 3669

What is the value of $2 + 3 \times 4 - 5$?

$15$
$9$✔️
$4$
$20$

Correct Answer Logic:

PEMDAS: $2 + 12 - 5 = 9$

Uploaded by: Fani Warraich

Paper-I (Pharmaceutics II (Industrial and Quality Control) and Pharmaceutics III (Hospital and Community Pharmacy)) QUESTION #5724

Question 3670

A medication error occurs when an infusion is administered at $100\text{ mL/hr}$ instead of the prescribed $50\text{ mL/hr}$. This is classified as which type of error?

Wrong preparation error
Wrong rate error✔️
Omission error
Unauthorized drug error

Correct Answer Logic:

Speeding up or slowing down an infusion is a 'Wrong rate error'.

Uploaded by: Fani Warraich

Ability / HR / Governance / Special Education QUESTION #1870

Question 3671

Under Rule 14 proviso, if FPSC nomination is not received within one year, contract appointment may be extended for how long?

Six months
Another one year✔️
Two more years
Indefinitely

Correct Answer Logic:

Rule 14 proviso (ii) states if nomination is not received from FPSC within one year, contract appointment may in public interest be extended for another one year.

Uploaded by: Fani Warraich

Chemistry QUESTION #1434

Question 3672

Which of the following is the primary site for the digestion of carbohydrates?

Stomach
Mouth
Small intestine✔️
None of these

Correct Answer Logic:

Although carbohydrate digestion begins in the mouth (salivary amylase breaks down starch), the primary and most significant site of carbohydrate digestion is the small intestine. Pancreatic amylase and brush-border enzymes (maltase, sucrase, lactase) in the small intestine break down complex carbohydrates and disaccharides into absorbable monosaccharides.

Uploaded by: Fani Warraich

Law QUESTION #9681

Question 3673

Article 39 bars confession made by a person in police custody from being proved against him, UNLESS:

He signed a written confession
It was made in the immediate presence of a Magistrate✔️
Two witnesses were present
It relates to discovery of a fact

Correct Answer Logic:

Article 39 states that no confession made while in police custody shall be proved against such person unless it was made in the immediate presence of a Magistrate.

Uploaded by: Fani Warraich

General Knowledge QUESTION #4471

Question 3674

_____ is the author of “Essay on Population (1798)”.

Thomas Malthus✔️
Ester Boserup
Garret Hardin
None of these

Correct Answer Logic:

Thomas Malthus authored 'An Essay on the Principle of Population' in 1798.

Uploaded by: Fani Warraich

Academic/Professional (Social Sciences) QUESTION #10137

Question 3675

Two societies show identical social cohesion levels, but Society A's cohesion stems from shared kinship and tribal loyalty while Society B's stems from mutual economic dependence. Which pairing best matches Khaldun and Durkheim respectively?

Society A = Durkheim's organic; Society B = Khaldun's Asabiya
Society A = Khaldun's Asabiya; Society B = Durkheim's organic solidarity✔️
Both represent Durkheim's mechanical solidarity
Both represent Khaldun's Asabiya

Correct Answer Logic:

Kinship/tribal loyalty aligns with Khaldun's Asabiya, while economic interdependence aligns with Durkheim's organic solidarity.

Uploaded by: Fani Warraich

Mathematics QUESTION #4135

Question 3676

Given $\nabla r^n = nr^{n-2}\vec{r}$, what is $\nabla \left(\frac{1}{r}\right)$ for $r \neq 0$?

$-\frac{\vec{r}}{r^3}$✔️
$\frac{\vec{r}}{r^3}$
$-\frac{1}{r^2}$
$\frac{1}{r^2}$

Correct Answer Logic:

Using formula with $n = -1$: $\nabla r^{-1} = (-1)r^{-3}\vec{r} = -\frac{\vec{r}}{r^3}$.

Uploaded by: Fani Warraich

Psychology QUESTION #9759

Question 3677

Which theory proposes that individuals learn attitudes by observing their own behaviour?

Operant conditioning
CR
Self-perception✔️
None of these

Correct Answer Logic:

Self-perception theory (Daryl Bem) suggests people form attitudes by observing their own behaviour, much like they infer others' attitudes from their behaviour. It differs from operant conditioning (reward/punishment) and classical conditioning.

Uploaded by: Fani Warraich