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Biology QUESTION #7269

Nitrogen fixation in root nodules of Alnus is brought about by:

Frankia✔️
Azorhizobium
Bradyrhizobium
Clostridium

Correct Answer Logic:

Frankia is a filamentous actinomycete that forms nitrogen-fixing root nodules (actinorhizal nodules) in non-leguminous plants like Alnus (alder), Casuarina, and Ceanothus. Rhizobium and Bradyrhizobium nodulate legumes; Azorhizobium is stem-nodulating; Clostridium is a free-living anaerobic nitrogen fixer.

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Chemistry QUESTION #480

Question 11102

Sulphur has oxidation state of __________

?2
+ 4 and +6
None of these
Both A and B✔️

Correct Answer Logic:

Sulphur shows multiple oxidation states

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Nursing QUESTION #9152

Question 11103

In epidemiology, the Attack Rate formula is:
Which formula correctly represents the attack rate?

\\frac{\\text{New cases in a period}}{\\text{Population at start of period}} \\times 100
\\frac{\\text{Ill persons among exposed}}{\\text{Total exposed persons}} \\times 100✔️
\\frac{\\text{Total cases}}{\\text{Total population}} \\times 1000
\\frac{\\text{Deaths due to disease}}{\\text{Total cases of disease}} \\times 100

Correct Answer Logic:

The Attack Rate is used during outbreaks/epidemics to measure the proportion of exposed individuals who develop the disease:

\\text{Attack Rate} = \\frac{\\text{Number of ill persons among exposed}}{\\text{Total number of exposed persons}} \\times 100

Option 1 describes Incidence Rate
Option 3 describes Prevalence Rate
Option 4 describes Case Fatality Rate (CFR)

Understanding attack rates is essential during disease outbreak management — a core Head Nurse responsibility in community settings.

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Paper-I (Pharmaceutics II (Industrial and Quality Control) and Pharmaceutics III (Hospital and Community Pharmacy)) QUESTION #5687

Question 11104

Which of the following describes a physical incompatibility in a prescription containing Caffeine and Sodium Salicylate?

Formation of a toxic complex
Evolution of $CO_{2}$ gas
Liquefaction due to formation of a eutectic mixture✔️
Precipitation of alkaloids

Correct Answer Logic:

Physical incompatibility often involves changes in physical state; certain solids liquefy when mixed (eutectic mixtures).

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Administration QUESTION #9554

Question 11105

Pakistan's federal structure creates a concurrent legislative list under the Constitution. What is the practical administrative implication when the Federal Government creates a welfare programme but relies on provincial governments to implement it?

It violates the principle of unity of direction — each programme must have one head and one plan within a single governmental tier
It creates overlapping authority that may produce inconsistency in implementation standards, accountability gaps and inter-governmental coordination challenges✔️
It requires that provincial civil servants involved in implementation be deputationed to the federal government for the duration of the programme
It necessitates that the National Economic Council formally approve the programme before provinces can begin implementation

Correct Answer Logic:

When federal policy is implemented provincially, administrative accountability becomes fragmented — the federal government sets policy but lacks direct control over delivery, while provinces implement but may not share the same objectives or resources. This produces the classic problem of federal-provincial coordination failure, inconsistent service delivery, and blurred accountability — a structural challenge unique to public (not private) administration.

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General Knowledge QUESTION #11438

Question 11106

In an operating system, files can be structured and organised inside:

Archives
Folders✔️
Indexes
Lists

Correct Answer Logic:

Folders (directories) are the primary organisational unit in file systems, allowing users to group related files hierarchically. Folders can contain files and sub-folders, creating a tree-like directory structure for efficient file management.

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General Knowledge QUESTION #11562

Question 11107

What does FTP stand for in computer networking?

Fix Transfer Protocol
File Transfer Procedure
File Transfer Protocol✔️
First Transfer Protocol

Correct Answer Logic:

FTP (File Transfer Protocol) is a standard network protocol for transferring files between client and server over TCP/IP networks. FTP uses port 21 (control) and port 20 (data). Secure variants: SFTP (SSH File Transfer Protocol) and FTPS. FTP is used for uploading website files and sharing large files.

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Chemistry QUESTION #7533

Question 11108

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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Chemistry QUESTION #5523

Question 11109

Identify the reaction that is NOT part of the ozone layer depletion mechanism in the stratosphere.

$CF_2Cl_2(g) \xrightarrow{hv} \cdot Cl(g) + \cdot CF_2Cl(g)$
$Cl\dot{O}(g) + O(g) \rightarrow \cdot Cl(g) + O_2(g)$
$CH_4 + 2O_3 \rightarrow 3\,CH_2{=}O + 3H_2O$✔️
$HOCl(g) \xrightarrow{hv} \cdot OH(g) + \cdot Cl(g)$

Correct Answer Logic:

The ozone depletion cycle involves: (A) CFCs releasing Cl radicals under UV, (B) ClO reacting with O atom to regenerate Cl radical (chain propagation), (D) HOCl photolysis to give OH and Cl radicals — all are real steps. Option (C), the reaction of $CH_4$ with $O_3$ to give formaldehyde and water, is NOT a recognized step in stratospheric ozone depletion chemistry.

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English QUESTION #2640

Question 11110

Identify the part of speech for the underlined word: 'The team played *exceptionally* well today.'

Adjective
Adverb✔️
Noun
Conjunction

Correct Answer Logic:

The word 'exceptionally' modifies the adverb 'well,' and words that modify verbs, adjectives, or other adverbs are adverbs.

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Math Physics Chemistry Biology QUESTION #4247

Question 11111

The most abundant polysaccharide in plants, widely used in paper and as a source of dietary fibre for human is:

Chitin
Glycogen
Starch
Cellulose✔️

Correct Answer Logic:

Cellulose is most abundant plant polysaccharide.

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General Knowledge QUESTION #8711

Question 11112

What was the age of Quaid-i-Azam Muhammad Ali Jinnah when he joined the All India Muslim League?

27 years
30 years
37 years✔️
35 years

Correct Answer Logic:

Jinnah joined the Muslim League in 1913 at age 37.

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Math Physics Chemistry Biology QUESTION #4213

Question 11113

Y-linked inheritance refers to which mode of the inheritance?

Criss-cross
Straight✔️
Loop
Jumping

Correct Answer Logic:

Y-linked inheritance passes from father to son (straight).

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Law QUESTION #9668

Question 11114

Under Article 2(9), when one fact is declared 'conclusive proof' of another, the Court:

May allow rebuttal evidence
Shall regard the other fact as proved and shall NOT allow evidence to disprove it✔️
May at its discretion allow contradictory evidence
Shall seek corroboration before accepting it

Correct Answer Logic:

Article 2(9) states that when one fact is conclusive proof of another, the Court shall regard the other as proved and shall NOT allow evidence to be given for the purpose of disproving it.

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English QUESTION #8335

Question 11115

He went _______ the direction of the post office.

in✔️
at
to
on

Correct Answer Logic:

'In the direction of' is correct.

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General Knowledge QUESTION #8904

Question 11116

The normal body temperature of a healthy human is approximately:

$81.1^\circ \mathrm{C}$
$36.9^\circ \mathrm{C}$✔️
$98.6^\circ \mathrm{F}$ (option not correctly written)
$21.7^\circ \mathrm{C}$

Correct Answer Logic:

Normal body temperature is about 36.9°C or 98.6°F. Option B is 36.9°C.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3646

Question 11117

'Colchicum' is a drug used primarily to treat:

Gout✔️
Asthma
Heartburn
Skin rash

Correct Answer Logic:

Colchicine is used for acute gout attacks.

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English QUESTION #2758

Question 11118

Which sentence uses the APOSTROPHE correctly?

The dogs bone was buried in the garden.
The dog's bone was buried in the garden.✔️
The dogs' bone was buried in the garden.
The dogs'es bone was buried in the garden.

Correct Answer Logic:

An apostrophe + s ('s) is used to show possession for singular nouns. Since there is one dog, 'dog's' is correct. 'Dogs'' would be used for multiple dogs.

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General Knowledge QUESTION #11543

Question 11119

Which category describes a medium-sized multi-user computer system?

Microcomputer
Mainframe
Supercomputer
Minicomputer✔️

Correct Answer Logic:

A Minicomputer (minicomputer) is a medium-sized computer, smaller than a mainframe but larger and more powerful than a microcomputer (PC). Minicomputers emerged in the 1960s (e.g. DEC PDP series), supported multiple simultaneous users, and were used in scientific research and business. They were superseded by powerful workstations and servers.

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MBBS QUESTION #10351

Question 11120

Long-chain fatty acids must be transported into the mitochondrial matrix for beta-oxidation via a specific carrier system, impaired in carnitine palmitoyltransferase (CPT) deficiency. This transport system is known as the:

Carnitine shuttle✔️
Malate-aspartate shuttle
Glycerol-3-phosphate shuttle
Citrate shuttle

Correct Answer Logic:

The carnitine shuttle — comprising CPT-I (outer mitochondrial membrane), carnitine-acylcarnitine translocase, and CPT-II (inner membrane) — converts long-chain fatty acyl-CoA to acylcarnitine for transport into the mitochondrial matrix, where it is reconverted to acyl-CoA for beta-oxidation; the malate-aspartate and glycerol-3-phosphate shuttles instead transport reducing equivalents (NADH) rather than fatty acids.

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