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Math Physics Chemistry Biology QUESTION #7764

Endospores are produced by which type of bacteria?

Both Gram-negative and Gram-positive
Gram-negative only
Gram-positive only✔️
Mycobacteria

Correct Answer Logic:

Endospores are formed by Gram-positive bacteria like Bacillus and Clostridium. Mycobacteria are acid-fast; most Gram-negative do not form endospores.

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English QUESTION #8435

Question 3682

Identify the incorrectly spelled word:

Nursery
Secondary
Library
Primary✔️

Correct Answer Logic:

All seem correct. Option D 'Primary' — but actually all correct. Key says D? Possibly 'Primary' misspelled? No. Given key, D is wrong.

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Accounting & Finance QUESTION #1228

Question 3683

The discount rate at which two projects have identical _________ is referred to as Fisher's rate of intersection.

Present values
Net present values✔️
IRRs
Profitability indexes

Correct Answer Logic:

Fisher's rate of intersection (or Fisher's rate) is the discount rate at which the NPVs of two mutually exclusive projects are equal — the crossover rate. At this rate, both projects have identical Net Present Values. Below this rate, one project is preferred; above it, the other is preferred. It is used to resolve conflicts between NPV and IRR rankings.

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English QUESTION #8426

Question 3684

I was annoyed _______ my mistake.

on
up
at✔️
in

Correct Answer Logic:

'Annoyed at' something is correct.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3648

Question 3685

'Cannabis' (Charas/Hashish) is obtained from:

Cannabis sativa✔️
Papaver somniferum
Nicotiana tabacum
Atropa belladonna

Correct Answer Logic:

Cannabis is used for its resinous flowering tops.

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Math Physics Chemistry Biology QUESTION #4264

Question 3686

In which of the following combinations, both components have non-striated muscle fibers?

Intestine & biceps
Intestine & blood vessels✔️
Heart & lungs
Stomach & heart

Correct Answer Logic:

Intestine and blood vessels both contain smooth (non-striated) muscle. The heart has striated cardiac muscle; biceps has striated skeletal muscle.

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Biology Zoology Botany QUESTION #1343

Question 3687

Erythropoietin, a hormone, is primarily produced by _________ and is involved for RBC production:

Liver
Kidney✔️
Leukocytes
None of these

Correct Answer Logic:

Erythropoietin (EPO) is a glycoprotein hormone primarily produced by peritubular interstitial cells in the cortex of the kidney (about 90%) in response to hypoxia (low oxygen levels). A small amount is produced in the liver. EPO stimulates the bone marrow to increase the production of red blood cells (erythropoiesis), thereby increasing oxygen-carrying capacity.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3528

Question 3688

Why is 'Cold Compression' used for extracting Lemon Oil rather than Steam Distillation?

Heat would destroy the delicate aroma and degrade the chemical constituents✔️
Cold compression is cheaper
Lemon oil is a solid
Lemon oil doesn't evaporate

Correct Answer Logic:

Many citrus oils are obtained by expression (pressing) to preserve their fresh quality.

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Quantitative Reasoning QUESTION #8125

Question 3689

The (i)_______ of Vladimir Nabokov as one of North America's literary giants has redirected attention to his secondary activities and has thus served to (ii)_______ his efforts as an amateur entomologist.

lionization .. foreground
stigmatization .. foreground
marginalization .. obscure
lionization .. obscure✔️

Correct Answer Logic:

Being celebrated as a literary giant (lionization = treating someone as a celebrity) would draw attention to his main literary work — which in turn pushes his minor hobby into the background. Therefore his entomology work gets obscured (hidden/overshadowed). 'Stigmatization' means being disgraced — opposite of being a celebrated giant. 'Foreground' would mean highlighting his entomology, which contradicts the logic of the sentence.

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Urdu QUESTION #5140

Question 3690

آنکھیں پھیرنا سے کیا مراد ہے؟

دشمنی✔️
زخم دینا
وفادار رہنا
ان میں سے کوئی نہیں

Correct Answer Logic:

آنکھیں پھیرنا محاورے کا مطلب ہے مخالف ہو جانا یا نظریں بدل لینا۔

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Education QUESTION #6730

Question 3691

A student demonstrates knowledge when explaining concepts to peers but struggles on written tests. This MOST likely indicates:

Lack of true understanding
Need for alternative assessment methods recognizing diverse intelligences✔️
Academic dishonesty
Poor test-taking skills only

Correct Answer Logic:

Multiple intelligences suggest people demonstrate understanding differently. Strong verbal-interpersonal intelligence may not translate to linguistic-written performance. Authentic assessment should include varied methods (oral explanation, demonstration, written work) to capture true understanding.

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Geography QUESTION #6340

Question 3692

In urban geography, 'gentrification' is best defined as:

Government-led urban renewal and slum clearance
Private reinvestment in deteriorating neighborhoods leading to displacement of lower-income residents✔️
Suburbanization of middle-class populations
Construction of luxury high-rise apartments

Correct Answer Logic:

Gentrification involves private capital reinvestment rehabilitating deteriorating inner-city neighborhoods, increasing property values, attracting higher-income residents, and displacing original lower-income inhabitants through rising rents and property taxes.

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Chemistry QUESTION #454

Question 3693

With increase in number of unpaired electrons

paramagnetism:✔️
Increases
Decreases
Remains constant

Correct Answer Logic:

No explanation provided for this question.

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Math Physics Chemistry Biology QUESTION #548

Question 3694

Name the one involved in DNA replication.

Cysts
Mesosomes✔️
Ribosomes
Spores

Correct Answer Logic:

Mesosomes are involved in DNA replication in bacteria

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English QUESTION #2664

Question 3695

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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Chemistry QUESTION #424

Question 3696

When CuSO? is electrolyzed in aqueous solution using copper electrodes then the substance which deposits at the cathode is:

Copper metal✔️
Copper ions
Hydrogen
Oxygen

Correct Answer Logic:

No explanation provided for this question.

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Physics QUESTION #7093

Question 3697

A particle starts at $(2, 4)$ at $t=0$ with velocity $(5\hat{i}+4\hat{j})$. Constant acceleration is $(4\hat{i}+4\hat{j})$. Find its distance from the origin at $t=2\text{ s}$.

15 m
$20\sqrt{2}\text{ m}$✔️
5 m
$10\sqrt{2}\text{ m}$

Correct Answer Logic:

Using $\vec{s} = \vec{r}_0 + \vec{u}t + \frac{1}{2}\vec{a}t^2$:

$x = 2 + 5(2) + \frac{1}{2}(4)(2^2) = 2 + 10 + 8 = 20$
$y = 4 + 4(2) + \frac{1}{2}(4)(2^2) = 4 + 8 + 8 = 20$
Distance from origin $D = \sqrt{20^2 + 20^2} = 20\sqrt{2}\text{ m}$.

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English QUESTION #8446

Question 3698

Industrious means:

Successful
Sensible
Diligent✔️
Labourer

Correct Answer Logic:

Industrious means hard-working and diligent.

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English QUESTION #2650

Question 3699

Change the sentence to passive voice: 'The chef prepared a delicious meal.'

A delicious meal is prepared by the chef.
A delicious meal was prepared by the chef.✔️
A delicious meal being prepared by the chef.
A delicious meal has been prepared by the chef.

Correct Answer Logic:

In Simple Past, passive voice uses 'was/were + past participle'.

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Agronomy QUESTION #2049

Question 3700

The critical period of weed competition (CPWC) for most annual field crops refers to:

The entire crop growth season during which weeds must be controlled
The specific period from crop emergence during which weeds must be removed to prevent unacceptable yield losses, typically corresponding to 25–33% of the total crop growth period✔️
The period between planting and first irrigation when weed competition is maximum
The post-harvest period when weed seed banks are replenished

Correct Answer Logic:

The CPWC is defined by two thresholds: (1) the period weeds can remain before causing yield loss (weed-free period), and (2) the duration crops must be weed-free after emergence to prevent irreversible yield loss. For most crops it spans 25–33% of the growing period — usually the vegetative to early reproductive stages.

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