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A PDA (Personal Digital Assistant) allows computing to go mobile. It was a handheld device combining computing, communication, and organizational tools — a key step toward today's smartphones and tablets.

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Physics QUESTION #408

Question 6

Work done on a body equals change in its __________ energy.

Total
Potential
Kinetic
All of these✔️

Correct Answer Logic:

Work-energy theorem applies to all forms

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Economics QUESTION #1695

Question 7

The empirical inverse relationship between the inflation rate and the unemployment rate — suggesting a short-run trade-off between the two — is represented by which of the following economic concepts?

Okun's Law
The Phillips Curve✔️
Say's Law
The U-shaped average cost curve

Correct Answer Logic:

The Phillips Curve (A.W. Phillips, 1958) depicts the empirical inverse relationship between unemployment and inflation: when unemployment is low, inflation tends to be high, and vice versa. It represents the short-run trade-off policymakers face. Okun's Law relates unemployment to GDP growth. Say's Law states supply creates its own demand. The short-run Phillips Curve has been challenged by stagflation and the natural rate hypothesis.

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Mathematics QUESTION #7445

Question 8

If $\sum_{i=1}^{9}(x_i-5) = 9$ and $\sum_{i=1}^{9}(x_i-5)^2 = 45$, then the standard deviation of the 9 items $x_1, x_2, \ldots, x_9$ is:

2✔️
3
9
4

Correct Answer Logic:

We have $\sum(x_i-5) = 9$, so $\sum x_i - 45 = 9$, giving $\sum x_i = 54$. Mean = $\frac{54}{9} = 6$. Also, $\sum(x_i-5)^2 = 45$. Expanding: $\sum x_i^2 - 10\sum x_i + 225 = 45$, so $\sum x_i^2 = 45 + 540 - 225 = 360$. Variance = $\frac{\sum x_i^2}{n} - (\bar{x})^2 = \frac{360}{9} - 36 = 40 - 36 = 4$. Standard deviation = $\sqrt{4} = 2$.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3021

Question 9

What is 'Levigation' in ointment preparation?

Heating the base
Reducing particle size by grinding with a small amount of liquid✔️
Mixing with a mechanical stirrer
Adding a preservative

Correct Answer Logic:

Levigation involves grinding a powder with a small amount of a 'levigating agent' (like mineral oil) to form a smooth paste before mixing with the base.

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Physics QUESTION #6989

Question 10

A parallel plate capacitor of capacitance 90 pF is connected to a 20 V battery. A dielectric slab with dielectric constant $K = \dfrac{5}{3}$ is then inserted between the plates. What is the magnitude of the induced (bound) charge on the dielectric?

2.4 nC
0.9 nC
1.2 nC✔️
0.3 nC

Correct Answer Logic:

Initial charge (without dielectric):

$Q_0 = C_0 V = 90 \times 10^{-12} \times 20 = 1800\ \text{pC} = 1.8\ \text{nC}$

New capacitance with dielectric:

$C = KC_0 = \frac{5}{3} \times 90 = 150\ \text{pF}$

New free charge:

$Q = CV = 150 \times 10^{-12} \times 20 = 3000\ \text{pC} = 3\ \text{nC}$

Induced charge on dielectric:

$Q_{induced} = Q\left(1 - \frac{1}{K}\right) = 3 \times \left(1 - \frac{3}{5}\right) = 3 \times \frac{2}{5} = 1.2\ \text{nC}$

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3167

Question 11

The process of 'Mitosis' results in:

Two identical daughter cells✔️
Four different daughter cells
One large cell
No cells

Correct Answer Logic:

Mitosis is for growth and repair, producing exact genetic copies.

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Pakistan Affairs QUESTION #152

Question 12

From whom did Gandhi draw inspiration regarding the village as the ideal unit for "loving thy neighbour"?

Rabindranath Tagore
Leo Tolstoy
John Ruskin✔️
None of these

Correct Answer Logic:

Gandhi was deeply influenced by Ruskin's 'Unto This Last' regarding agrarian and community living.

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Islamic Studies QUESTION #7925

Question 13

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.

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Education QUESTION #7588

Question 14

Which assessment technique best captures student attitudes and values?

Objective test
Questionnaire
Rating scale✔️
Matching test

Correct Answer Logic:

Rating scales allow students to express degrees of agreement or frequency, making them effective for measuring subjective constructs like attitudes, values, and feelings.

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Academic/Professional (Social Sciences) QUESTION #6496

Question 15

A 'Taboo' is best defined as:

A mild social norm
A formal law
A social prohibition of an action based on the belief that it is too sacred or accursed✔️
A popular fashion trend

Correct Answer Logic:

Taboos are strong social norms that, if violated, result in extreme disgust or punishment.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3267

Question 16

'Hemolysis' refers to the:

Production of blood
Destruction of Red Blood Cells✔️
Clotting of blood
Filtering of blood

Correct Answer Logic:

Hemolysis releases hemoglobin into the plasma.

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Urdu QUESTION #5092

Question 17

صفر کا متضاد کیا ہے؟

گرم
کبار
افضل
سلم✔️

Correct Answer Logic:

صفر کا متضاد 'سلم' ہے جس کے معنی سلامتی یا امن کے ہیں۔

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Pakistan Affairs QUESTION #4676

Question 18

Pakistan's first Martial Law was imposed in which month and year?

Aug-58
Sep-58
Oct-58✔️
Nov-58

Correct Answer Logic:

General Ayub Khan imposed Pakistan's first Martial Law on October 7, 1958, with President Iskander Mirza abrogating the constitution. Mirza himself was deposed by Ayub Khan on October 27, 1958.

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MCQs Section QUESTION #4874

Question 19

Correct antonym of "TENTATIVE" is

Expedient✔️
Nominal
Provisional
Alternative

Correct Answer Logic:

Tentative means not certain or fixed; done as a trial. Its antonym is 'expedient,' meaning suitable and practical for a particular purpose — implying decisiveness rather than hesitation.

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Library Sciences QUESTION #1503

Question 20

Which classification system uses a purely faceted approach with the PMEST formula, developed by S.R. Ranganathan?

Dewey Decimal Classification
Library of Congress Classification
Colon Classification✔️
Universal Decimal Classification

Correct Answer Logic:

The Colon Classification (CC), developed by S.R. Ranganathan, is the most prominent example of a purely faceted classification system. It analyzes subjects into fundamental categories: Personality, Matter, Energy, Space, and Time (PMEST).

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