Reading Mode - Questions

Physics QUESTION #1058

An electron (mass $9\times10^{-31}\ \text{kg}$, charge $1.6\times10^{-19}\ \text{C}$) moves at $c/100$ in field $B=9\times10^{-4}\ \text{T}$. Electric field $E$ to prevent deflection:

E parallel to B, magnitude $27\times10^2\ \text{V/m}$
E parallel to B, magnitude $27\times10^4\ \text{V/m}$
E perpendicular to B, magnitude $27\times10^4\ \text{V/m}$✔️
E perpendicular to B, magnitude $27\times10^2\ \text{V/m}$

Correct Answer Logic:

For no deflection: electric force must balance magnetic force. $qE=qvB\Rightarrow E=vB=\frac{3\times10^8}{100}\times9\times10^{-4}=3\times10^6\times9\times10^{-4}=27\times10^2\ \text{V/m}$. E must be perpendicular to B (to oppose magnetic force direction). So E perpendicular to B, magnitude $27\times10^2\ \text{V/m}$ = option (4).

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Reading and Writing (Module-1) QUESTION #5326

Question 3082

What is the main idea of the text regarding niche partitioning?

It reduces competition by ensuring species occupy different roles.✔️
It leads to the extinction of weaker species.
It prevents species from sharing the same ecosystem.
It increases the amount of resources available.

Correct Answer Logic:

Niche partitioning allows species to coexist by specializing in different areas/roles.

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Pakistan Affairs QUESTION #590

Question 3083

In 1905 Bengal was partitioned during the Viceroyalty of:

Lord Mayo
Lord William Bentick
Lord Curzon✔️
None of These

Correct Answer Logic:

Lord Curzon announced the partition of Bengal in 1905.

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Logical Reasoning QUESTION #3942

Question 3084

Select the pair with a similar relationship: PEAK : MOUNTAIN

Floor : House✔️
River : Ocean
Crest : Wave
Root : Tree

Correct Answer Logic:

2

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Boilers Mechanical Engineering QUESTION #4053

Question 3085

'Pulverized Fuel' refers to coal that is:

Wet
Ground into a very fine powder✔️
In large chunks
Mixed with oil

Correct Answer Logic:

Fine powder burns almost like a gas, allowing for very efficient combustion in large utility boilers.

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Psychology QUESTION #1462

Question 3086

Which theory of emotion suggests that emotions occur simultaneously with physiological reactions?

Cannon-Bard Theory✔️
Schachter-Singer Two-Factor Theory
James-Lange Theory
Lazarus Cognitive-Mediational Theory

Correct Answer Logic:

The Cannon-Bard Theory (Walter Cannon and Philip Bard, 1927) proposes that emotions and physiological responses occur simultaneously and independently — both triggered at the same time by the thalamus. James-Lange Theory proposes emotions follow physiological arousal; Schachter-Singer requires cognitive labelling of arousal; Lazarus's theory emphasises cognitive appraisal as the primary step before emotion.

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Economics QUESTION #1683

Question 3087

In consumer theory, the marginal utility of consuming a good is most precisely defined as the:

Total utility derived from the good before the last unit is consumed
Additional utility gained from consuming one more unit of the good✔️
Utility derived from consuming a different, substitute good
Consumer surplus generated from the consumption of an alternative good

Correct Answer Logic:

Marginal utility (MU) is the additional (incremental) utility or satisfaction a consumer derives from consuming one more unit of a good, holding all else constant. Mathematically: $MU = \dfrac{\Delta TU}{\Delta Q}$. The Law of Diminishing Marginal Utility states that MU typically declines as more units are consumed. It is the foundational concept in cardinal utility analysis and the derivation of the demand curve.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3231

Question 3088

'Arrhythmia' refers to:

High blood pressure
Abnormal heart rhythm✔️
Low red blood cell count
Inflammation of the joints

Correct Answer Logic:

Arrhythmias can range from harmless palpitations to life-threatening conditions.

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General Knowledge QUESTION #179

Question 3089

The G20 Summit meeting was held in _______ in 2024.

Costa Rica
Rio de Janeiro✔️
Tokyo
None of these

Correct Answer Logic:

Brazil hosted the 2024 G20 summit in Rio de Janeiro.

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Professional QUESTION #1801

Question 3090

Under Rule 26(3), if a bid validity extension is considered necessary, the maximum extension that may be granted shall not exceed:

Fifteen days
Thirty days
A period equal to the original bid validity period✔️
Sixty days

Correct Answer Logic:

Rule 26(3) specifies that under exceptional circumstances, where an extension of bid validity is considered necessary (with reasons recorded in writing), the extension shall be for not more than a period equal to the period of the original bid validity — regardless of the actual duration.

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Basic Mathematics QUESTION #2897

Question 3091

In how many years will $\$200$ double itself at $10\%$ simple interest?

5 years
10 years✔️
20 years
8 years

Correct Answer Logic:

To double, Interest must equal Principal ($200$). $T = (200 \times 100) / (200 \times 10) = 10$ years.

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Reading and Writing (Module-1) QUESTION #5416

Question 3092

In 1968, US Congressman John Conyers introduced a bill to establish a national holiday in honor of Dr. Martin Luther King Jr. The bill didn't make it to a vote, but Conyers was determined. He teamed up with Shirley Chisholm, the first Black woman to be elected to Congress, and they resubmitted the bill every session for the next fifteen years. _______ in 1983, the bill passed. Which choice completes the text with the most logical transition?

Instead,
Likewise,
Finally,✔️
Additionally,

Correct Answer Logic:

'Finally' logically signals that the bill passing in 1983 was the concluding event after fifteen years of resubmission.

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Statistics QUESTION #1997

Question 3093

Using moments $\mu_1' = -0.35$, $\mu_2' = 2.09$ about $a = 16$, the variance $\mu_2$ (second central moment) of the distribution equals:

2.09
1.9675✔️
2.2125
1.7

Correct Answer Logic:

Variance $\mu_2 = \mu_2' - (\mu_1')^2 = 2.09 - (-0.35)^2 = 2.09 - 0.1225 = 1.9675$. The central moment is obtained by subtracting the squared first raw moment from the second raw moment.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3540

Question 3094

The drug 'Vinca' (Periwinkle) is famous for its alkaloids used in:

Diabetes
Cancer treatment (Chemotherapy)✔️
High blood pressure
Treating the common cold

Correct Answer Logic:

Vincristine and Vinblastine are essential anticancer drugs.

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Medicinal Chemistry and Biopharmaceutics QUESTION #3818

Question 3095

Why are viscosity-enhancing agents such as methylcellulose added to ophthalmic solutions?

To increase ocular exposure time✔️
To reduce inflammation of the eye by their soothing effect
To suspend soluble drugs
To reduce drop size

Correct Answer Logic:

Methylcellulose and similar agents increase the viscosity of ophthalmic drops, thereby prolonging contact time with the ocular surface and improving drug absorption.

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Ability / HR / Governance / Special Education QUESTION #5642

Question 3096

The CFAO is responsible for submitting a monthly statement of departmental expenditure and receipts to the Financial Adviser's Organization by which deadline?

By the 10th of the following month
By the 25th of the following month
By the 10th and a reconciled statement by the 25th of the following month✔️
By the last working day of the following month

Correct Answer Logic:

The CFAO must furnish the monthly statement of departmental expenditure and receipts to Financial Adviser's Organization and the Finance Division (Budget and Accounts Section - Budget Wing) by the 10th AND the reconciled statement of expenditure and receipts by the 25th of the month following the month to which it relates.

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Others section QUESTION #4714

Question 3097

Antonio Guterres, appointed UN High Commissioner for Refugees in 2005, was formerly Prime Minister of which country?

Denmark
Romania
Canada
Portugal✔️

Correct Answer Logic:

António Guterres served as Prime Minister of Portugal from 1995 to 2002 before becoming UN High Commissioner for Refugees (2005–2015) and later UN Secretary-General.

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Others section QUESTION #4746

Question 3098

India constructed the Baglihar Dam in which district of occupied Kashmir?

Udhampur
Doda✔️
Jammu
Kupwara

Correct Answer Logic:

India constructed the controversial Baglihar Dam (also called Baglihar Hydroelectric Power Project) on the Chenab River in the Doda district of Indian-administered Jammu and Kashmir.

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