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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3127

Question 3161

The 'Central Nervous System' (CNS) consists of the:

Brain and spinal nerves
Brain and spinal cord✔️
Spinal cord and cranial nerves
Sensory and motor neurons

Correct Answer Logic:

The brain and spinal cord are the command centers.

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Reading and Writing (Module-1) QUESTION #10468

Question 3162

The report's conclusions were -------, supported by so much data that even skeptics found them -------.

dubious . . questionable
irrefutable . . convincing✔️
speculative . . doubtful
contentious . . debatable

Correct Answer Logic:

Conclusions no one can challenge are 'irrefutable' and thus 'convincing' even to skeptics.

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Boilers Mechanical Engineering QUESTION #2443

Question 3163

The dynamic magnification factor (DMF) $A_1$ for a damped forced vibration system is:

$A_1 = \frac{1}{\sqrt{\left[1-\left(\frac{p}{\omega_n}\right)^2\right]^2 + \left[2\zeta\frac{p}{\omega_n}\right]^2}}$✔️
$A_1 = \frac{1}{1-(p/\omega_n)^2}$
$A_1 = \frac{2\zeta p/\omega_n}{1-(p/\omega_n)^2}$
$A_1 = \left(1+\frac{p}{\omega_n}\right)^{-1}$

Correct Answer Logic:

The DMF for a damped forced vibration: $A_1=\frac{1}{\sqrt{[1-(p/\omega_n)^2]^2+[2\zeta(p/\omega_n)]^2}}$.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3425

Question 3164

'Hydrogen Bonds' in DNA occur between:

Sugar and Phosphate
Nitrogenous bases✔️
Phosphate and Oxygen
Carbon atoms

Correct Answer Logic:

They hold the two strands of the double helix together.

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HR and Management QUESTION #6427

Question 3165

In the context of organizational challenges, 'brain drain' specifically refers to:

Overall employee turnover across all levels
Loss of intellectual property when competitors lure away key employees✔️
Educational deficiencies in the workforce
Retirement of experienced workers

Correct Answer Logic:

Brain drain is the loss of intellectual property that results when competitors lure away key employees. High-tech firms are particularly vulnerable as key employees leave to start their own businesses or join competitors, negatively affecting innovation and causing delays in new product introductions.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #2952

Question 3166

A prescription requires $250\text{ mg}$ of a drug, but the pharmacy only has a $5\%$ (w/v) solution. How many milliliters are needed?

2 ml
5 ml✔️
10 ml
50 ml

Correct Answer Logic:

$5\%$ w/v means $5\text{ g}$ in $100\text{ ml}$, or $50\text{ mg/ml}$. Calculation: $250\text{ mg} \div 50\text{ mg/ml} = 5\text{ ml}$.

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General Knowledge QUESTION #4769

Question 3167

The permanent Secretariat of SAARC is located in which city?

Kathmandu✔️
Dhaka
Delhi
Islamabad

Correct Answer Logic:

The SAARC Secretariat has been permanently located in Kathmandu, Nepal since its establishment in 1987.

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Education QUESTION #6750

Question 3168

A test developer calculates item difficulty (p-value) for a four-choice MCQ and obtains p = 0.92. What is the MOST appropriate interpretation and action?

The item has excellent discrimination and should be retained as-is
The item is very easy; it should be reviewed and possibly replaced unless the purpose specifically requires mastery-level warm-up items✔️
The item has optimal difficulty for a norm-referenced test since p-value is above 0.5
The item discrimination index will necessarily be high because many students answered correctly

Correct Answer Logic:

For a four-alternative MCQ, the optimal p-value is approximately 0.62. A p-value of 0.92 means 92% answered correctly — the item is very easy. In NRT contexts this reduces discrimination power. Items above p = 0.90 need careful review. High p-value does not guarantee high discrimination; in fact, near-universal correct responses often yield near-zero or negative discrimination.

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Biomedical Sciences QUESTION #3814

Question 3169

Which endocrine condition is specifically characterised by autoimmune-driven excessive secretion of thyroid hormone?

Addison's disease
Hashimoto thyroiditis
Graves' disease✔️
Wilson's disease

Correct Answer Logic:

Graves' disease is an autoimmune hyperthyroid condition caused by TSH-receptor stimulating antibodies, leading to excessive thyroid hormone production and clinical thyrotoxicosis.

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English QUESTION #8516

Question 3170

The opposite of Confine is:

hide
capture
confirm
release✔️

Correct Answer Logic:

Confine means to restrict; opposite is release.

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Chemistry QUESTION #7374

Question 3171

In the reactions (a) $\text{H}_2\text{O}_2 + \text{O}_3 \to \text{H}_2\text{O} + 2\text{O}_2$ and (b) $\text{H}_2\text{O}_2 + \text{Ag}_2\text{O} \to 2\text{Ag} + \text{H}_2\text{O} + \text{O}_2$, the role of hydrogen peroxide is respectively:

Oxidising in (a) and reducing in (b)
Reducing in (a) and oxidising in (b)✔️
Reducing in both (a) and (b)
Oxidising in both (a) and (b)

Correct Answer Logic:

Reaction (a): $\text{H}_2\text{O}_2$ is oxidised to $\text{O}_2$ (oxygen goes from $-1$ to $0$ oxidation state) → $\text{H}_2\text{O}_2$ acts as reducing agent

Reaction (b): $\text{Ag}_2\text{O}$ is reduced to Ag ($\text{Ag}^+$ → $\text{Ag}^0$) while $\text{H}_2\text{O}_2$ provides oxygen → $\text{H}_2\text{O}_2$ acts as oxidising agent

$\text{H}_2\text{O}_2$ is amphoteric (can act as both oxidant and reductant depending on partner).

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Planning QUESTION #4975

Question 3172

Which Kevin Lynch element refers to paths that are not used but remain structurally significant?

Nodes
Edges✔️
Landmarks
Districts

Correct Answer Logic:

Edges are linear elements not used as paths by observers (shores, railroad cuts, walls) that form boundaries between districts or act as barriers, significantly structuring the mental image of a city.

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Mathematics QUESTION #7430

Question 3173

Distance between two parallel planes $2x + y + 2z = 8$ and $4x + 2y + 4z + 5 = 0$ is:

$\frac{3}{2}$
$\frac{5}{2}$
$\frac{7}{2}$✔️
$\frac{9}{2}$

Correct Answer Logic:

First, convert both planes to the same form. The second plane $4x + 2y + 4z + 5 = 0$ can be written as $2x + y + 2z + \frac{5}{2} = 0$ by dividing by 2. Now both planes have the form $2x + y + 2z = d$. For the first plane, $d_1 = 8$ and for the second, $d_2 = -\frac{5}{2}$. The distance formula between parallel planes is $d = \frac{|d_1 - d_2|}{\sqrt{a^2 + b^2 + c^2}}$ where $a=2, b=1, c=2$. Thus $d = \frac{|8 - (-\frac{5}{2})|}{\sqrt{4+1+4}} = \frac{|\frac{21}{2}|}{3} = \frac{21}{6} = \frac{7}{2}$.

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Mathematics QUESTION #4088

Question 3174

If $\varphi: \mathbb{Z}_6 \to \mathbb{Z}_6$ is a one-to-one (injective) homomorphism, then $\ker(\varphi)$ is:

All of $\mathbb{Z}_6$
$\{0, 2, 4\}$
$\{0, 3\}$
$\{0\}$✔️

Correct Answer Logic:

A group homomorphism is injective if and only if its kernel is trivial (contains only the identity). Since $\varphi$ is one-to-one, $\ker(\varphi) = \{0\}$, the trivial subgroup of $\mathbb{Z}_6$.

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English QUESTION #8528

Question 3175

The synonym of 'devilish' is:

Virtual
Satanic✔️
Simple
Honest

Correct Answer Logic:

Devilish means like a devil; satanic.

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Disaster Management QUESTION #6535

Question 3176

What represents the most significant paradigm shift in NDMA's evolution from reactive to proactive disaster management?

Purchasing more equipment
Establishing NEOC with AI-enabled predictive modeling and impact-based forecasting capabilities✔️
Hiring more staff
Increasing budget allocation

Correct Answer Logic:

Section 1.2 highlights the establishment of the National Emergencies Operations Center (NEOC) with AI, predictive modeling, and the National Common Operating Picture (NCOP) as transformative. This technology-enabled shift from reactive response to anticipatory action represents a fundamental change in approach.

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Reading and Writing (Module-1) QUESTION #10379

Question 3177

Despite the coach's repeated warnings, the team's performance remained -------, oscillating wildly between brilliant victories and dismal defeats.

consistent
erratic✔️
commendable
predictable

Correct Answer Logic:

The contrast set up by 'despite the coach's warnings' and 'oscillating wildly' signals inconsistency, matching 'erratic.'

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Agronomy QUESTION #2077

Question 3178

Herbicides classified as ACCase (acetyl-CoA carboxylase) inhibitors are selective for:

Broad-leaved dicotyledonous weeds in cereal crops
Grass (monocot) weeds — because the ACCase enzyme in grasses is sensitive to these herbicides whereas the dicot ACCase is inherently tolerant, providing selectivity✔️
All weed species regardless of their photosynthetic pathway
Weeds with deep root systems and high water use

Correct Answer Logic:

ACCase inhibitors (FOPs — aryloxyphenoxypropionates, and DIMs — cyclohexanediones) inhibit the first committed step in fatty acid synthesis. The ACCase enzyme in grass plastids is sensitive to these herbicides while dicot ACCase is insensitive (different isoform), providing inherent biochemical selectivity. They control grasses post-emergence without harming dicot crops or weeds.

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