Reading Mode - Questions

Security Measures to Maintain Law and Order QUESTION #7668

Security cards are useful for controlled access and following apply to them:

All officers/personnel working in controlled environment need to have security cards
Loss of security card is to be immediately reported
Both (A) & (B)✔️
None of these

Correct Answer Logic:

Both statements are correct. Security cards are essential for access control in secure environments - all authorized personnel must have them, and any loss must be immediately reported to prevent unauthorized access and to deactivate the lost card.

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Tourism & Hospitality Management QUESTION #1636

Question 2822

The Heritage Management course covers 'information technology in heritage management.' Which specific technologies are identified as applicable to documentation, conservation, and management of cultural heritage?

Social media platforms and mobile apps for tourist engagement
Database Management Systems (DBMS) and Geographic Information Systems (GIS) for documentation, spatial analysis, and conservation management of heritage sites✔️
Point of sale (POS) systems for heritage site gift shops
Video conferencing tools for museum staff meetings

Correct Answer Logic:

Module 9 of the Heritage Management course — Information Technology in Heritage Management — specifically identifies Database Management Systems (DBMS) and Geographic Information Systems (GIS) as the key technologies for heritage documentation, spatial mapping, conservation planning, and management. GIS in particular enables spatial analysis of heritage site condition, visitor patterns, and environmental threats.

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Urdu QUESTION #5244

Question 2823

آسمان پر اڑنا سے کیا مراد ہے؟

غرور کرنا✔️
گالیاں دینا
ٹالنا
غرور کا سر نیچا

Correct Answer Logic:

آسمان پر اڑنا محاورے کا مطلب ہے انتہائی مغرور ہونا یا تکبر کرنا۔

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Education QUESTION #6778

Question 2824

A researcher applies Item Response Theory to a set of test items and finds that one item has a very low 'a' (discrimination) parameter and a relatively high 'c' (pseudo-guessing) parameter. What practical recommendation follows from this?

Retain the item because low guessing should be prioritized over discrimination
The item likely does not differentiate ability levels effectively and may be susceptible to correct responses through guessing; it should be revised or removed from the bank✔️
Increase the item difficulty to reduce the guessing parameter
Use this item as a warm-up item since it is accessible to all ability levels

Correct Answer Logic:

In IRT's 3-parameter logistic model: 'a' is discrimination (steepness of ICC), 'b' is difficulty, and 'c' is the pseudo-guessing parameter (lower asymptote of the ICC). A low 'a' means the item poorly differentiates ability levels; a high 'c' means even low-ability examinees have a substantial probability of answering correctly — suggesting guessing is inflating scores. Such items should be revised or dropped.

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CISA QUESTION #1752

Question 2825

What is the leading technique for reporting compliance with key operational requirements?

Technical recommendations from IT
Identify business issues and governance objectives
COBIT performance framework
Individual compliance elements derived from contracts and regulations✔️

Correct Answer Logic:

Using a compliance matrix built from signed contracts, advertised SLA statements, and specific regulatory points defines the most critical service elements needed to support business operations. Absence of this document typically signals a major governance control failure.

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Physics QUESTION #1024

Question 2826

A ball of mass 0.5 kg is dropped from 40 m, hits the ground and rises to 10 m. The impulse imparted during collision is (Take $g = 9.8\ \text{m/s}^2$):

84 NS
21 NS✔️
7 NS

Correct Answer Logic:

Velocity before hitting: $v_1 = \sqrt{2\times9.8\times40} = 28\ \text{m/s}$ (downward). Velocity after: $v_2 = \sqrt{2\times9.8\times10} = 14\ \text{m/s}$ (upward). Impulse $= m(v_2-(-v_1)) = 0.5\times(14+28) = 0.5\times42 = 21\ \text{NS}$.

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English QUESTION #8381

Question 2827

Correct the sentence: 'I am tired as I am working since morning.'

was working
have been working✔️
I had been working
I will be working

Correct Answer Logic:

'Have been working' is present perfect continuous, correct for action starting in past and continuing.

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Chemistry QUESTION #7351

Question 2828

Measurement of an electron's position introduces an uncertainty in momentum equal to $1 \times 10^{-18}$ g cm s$^{-1}$. The uncertainty in electron velocity (mass of electron $= 9 \times 10^{-28}$ g) is:

$1 \times 10^{11}$ cm s$^{-1}$
$1 \times 10^{9}$ cm s$^{-1}$✔️
$1 \times 10^{6}$ cm s$^{-1}$
$1 \times 10^{5}$ cm s$^{-1}$

Correct Answer Logic:

Formula: $\Delta v = \dfrac{\Delta p}{m}$

$\Delta v = \dfrac{1 \times 10^{-18}}{9 \times 10^{-28}} = \dfrac{1}{9} \times 10^{10} \approx 1 \times 10^9$ cm s$^{-1}$

This enormously large uncertainty in velocity illustrates why classical mechanics fails for electrons — they cannot have precisely defined trajectories.

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Verbal Reasoning QUESTION #8098

Question 2829

Given that $r > s > 0$, compare the two quantities below.

Column A: $\dfrac{rs}{r}$

Column B: $\dfrac{rs}{s}$

Column A is greater
Column B is greater✔️
The two quantities are equal
The relationship cannot be determined from the information given

Correct Answer Logic:

Simplify each expression:

Column A: $\dfrac{rs}{r} = s$
Column B: $\dfrac{rs}{s} = r$

Since we are given $r > s > 0$, it follows that $r > s$.

Therefore Column B ($r$) is greater than Column A ($s$).

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Biological and Biochemical Foundations of Living Systems QUESTION #831

Question 2830

testing mcqs

Correct Answer Logic:

sdfasfs

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Pakistan Affairs QUESTION #308

Question 2831

What is considered as the greatest monument of Pakistan-China collaboration?

Karakoram Highway✔️
Gawadar Port
Orange Line
None of these

Correct Answer Logic:

The Karakoram Highway (KKH), also known as the Friendship Highway, is the iconic symbol of this partnership.+2

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General Knowledge QUESTION #267

Question 2832

The 2023 G20 Summit was held in India on:

5-6 September
7-8 September
9-10 September✔️
None of these

Correct Answer Logic:

The 18th G20 Summit took place in New Delhi on Sept 9-10, 2023.+1

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Economics QUESTION #1691

Question 2833

In the balance of payments framework, the account that records all cross-border transactions involving financial instruments — such as foreign direct investment, portfolio investment, and other capital flows — is known as the:

Capital and financial account✔️
Current account
Official reserve account
None of these

Correct Answer Logic:

The Capital and Financial Account records all transactions involving financial assets and liabilities between residents of a country and the rest of the world. This includes foreign direct investment (FDI), portfolio investment (stocks, bonds), other investment (loans, deposits), and reserve assets. The Current Account records trade in goods, services, primary income, and secondary income (transfers).

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General Knowledge QUESTION #8725

Question 2834

'Hyde Park' in London is most famous for:

Beautiful rare tulips
Unique fountains
Residence of the Lord Chancellor
None of the above (speakers' corner)✔️

Correct Answer Logic:

Hyde Park is famous for its Speakers' Corner and open-air discussions.

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Civil Engineering QUESTION #6571

Question 2835

For site clearance of a swampy/slushy jungle terrain intended for a multistory structure, the most suitable equipment is:

Bobcat
JCB
Dozer✔️
Trailer

Correct Answer Logic:

A Dozer (Bulldozer) is best suited for clearing dense jungle and slushy terrain due to its high ground contact area, powerful blade, and ability to push large volumes of debris and soft material.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3313

Question 2836

A 'Pure Culture' contains:

Multiple species of bacteria
Only a single species or strain of microorganism✔️
Only dead bacteria
Microbes and viruses mixed

Correct Answer Logic:

Pure cultures are essential for identifying pathogens and testing antibiotic sensitivity.

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English QUESTION #2664

Question 2837

Find the word similar in meaning to: 'FRUGAL'?

Wasteful
Generous
Economical✔️
Rich

Correct Answer Logic:

'Frugal' means sparing or thrifty in regard to money; 'economical' is the synonym.

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Contracts QUESTION #5847

Question 2838

A Buyer orders 'Grade A' wheat. The Seller delivers 'Grade B' wheat. The Buyer notices the defect immediately but stays silent and uses the wheat. Can the Buyer later sue for breach?

Yes, because the goods did not conform to the contract.
No, because the Buyer accepted the goods by failing to reject them.✔️
Yes, but only if the Seller acted in bad faith.
No, because 'Grade B' is a reasonable substitute.

Correct Answer Logic:

Under UCC §2-602 and §2-606, failure to make an effective rejection after a reasonable opportunity to inspect signifies acceptance.

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Chemistry QUESTION #7144

Question 2839

A solid with a density of $9 \times 10^{3}\text{ kg m}^{-3}$ forms an FCC crystal with an edge length of $200\sqrt{2}\text{ pm}$. Calculate the molar mass of this solid. ($N_A = 6 \times 10^{23}\text{ mol}^{-1}$)

$0.0305\text{ kg mol}^{-1}$
$0.4320\text{ kg mol}^{-1}$
$0.0432\text{ kg mol}^{-1}$✔️
$0.0216\text{ kg mol}^{-1}$

Correct Answer Logic:

Using the density formula $M = \frac{d \times N_A \times a^3}{Z}$:

$d = 9000\text{ kg/m}^3$
$Z = 4$ (for FCC)
$a = 200\sqrt{2} \times 10^{-12}\text{ m}$

Calculation: $a^3 = (200\sqrt{2})^3 \times 10^{-36} = 1.6 \times 10^{-29}\text{ m}^3$.
$M = \frac{9000 \times 6 \times 10^{23} \times 1.6 \times 10^{-29}}{4} = 0.0432\text{ kg mol}^{-1}$.

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Chemistry QUESTION #7533

Question 2840

Hydrogen peroxide oxidizes $[\text{Fe(CN)}_6]^{4-}$ to $[\text{Fe(CN)}_6]^{3-}$ in acidic medium, and reduces $[\text{Fe(CN)}_6]^{3-}$ to $[\text{Fe(CN)}_6]^{4-}$ in alkaline medium. What are the other products formed in these two reactions, respectively?

H$_2$O and (H$_2$O + O$_2$)
H$_2$O and (H$_2$O + OH$^-$)
(H$_2$O + O$_2$) and H$_2$O✔️
(H$_2$O + O$_2$) and (H$_2$O + OH$^-$)

Correct Answer Logic:

Acidic medium (oxidising agent):
$[\text{Fe(CN)}_6]^{4-} + H_2O_2 + 2H^+ \to [\text{Fe(CN)}_6]^{3-} + \text{H}_2\text{O}$
H$_2$O$_2$ is reduced to H$_2$O. Other product: H$_2$O.

Alkaline medium (reducing agent):
$H_2O_2 \to H_2O + \frac{1}{2}O_2$ (H$_2$O$_2$ is oxidized)
$2[\text{Fe(CN)}_6]^{3-} + H_2O_2 + 2OH^- \to 2[\text{Fe(CN)}_6]^{4-} + O_2 + 2H_2O$
Other products: H$_2$O and O$_2$.

So the pair is: H$_2$O (acidic) and (H$_2$O + O$_2$) (alkaline).

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