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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3246

Question 881

The 'Systolic' sound heard through a stethoscope (the first Lub) is caused by:

Opening of the Aorta
Closing of the AV valves (Mitral/Tricuspid)✔️
Closing of the Semilunar valves
Blood hitting the lungs

Correct Answer Logic:

The 'Lub' sound occurs at the start of ventricular systole.

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Chemistry QUESTION #1010

Question 882

Identify the homoleptic complex(es) that is/are low spin. (A) $[\text{Fe(CN)}_5\text{NO}]^{2-}$ (B) $[\text{CoF}_6]^{3-}$ (C) $[\text{Fe(CN)}_6]^{4-}$ (D) $[\text{Co(NH}_3)_6]^{3+}$ (E) $[\text{Cr(H}_2\text{O)}_6]^{2+}$

(C) only
(C) and (D) only✔️
(A) and (C) only
(B) and (E) only

Correct Answer Logic:

Homoleptic = only one type of ligand. (A) has $\text{CN}^-$ and NO — not homoleptic. (B) $[\text{CoF}_6]^{3-}$: F is weak field → high spin. (C) $[\text{Fe(CN)}_6]^{4-}$: $\text{CN}^-$ is strong field → low spin, homoleptic. (D) $[\text{Co(NH}_3)_6]^{3+}$: $\text{NH}_3$ is moderate-strong field on $\text{Co}^{3+}$ → low spin, homoleptic. So (C) and (D) are both homoleptic and low spin.

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Pharmacokinetics and Pharmacodynamics QUESTION #3838

Question 883

Why is lignocaine (lidocaine) not suitable for oral systemic administration?

It is not absorbed from the gastrointestinal tract
It undergoes significant first-pass metabolism in the liver✔️
It is decomposed by gastric acid
It binds to mucoproteins in the intestine

Correct Answer Logic:

Lignocaine is well absorbed from the GI tract but undergoes very high first-pass hepatic metabolism ($>70\%$), reducing oral bioavailability to clinically ineffective levels.

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Federal Rules of Evidence (US) QUESTION #3794

Question 884

During a civil trial, a witness for the plaintiff testifies. On cross, the defense asks a question that implies the witness is lying because he was paid a bribe by the plaintiff. On redirect, the plaintiff offers a statement the witness made to his wife *before* the alleged bribe was paid, which is consistent with his trial testimony. Is the statement admissible?

No, it's hearsay.
Yes, as non-hearsay to rebut a charge of recent fabrication or improper motive under Rule 801(d)(1)(B).✔️
No, because the statement was made to his wife and is privileged.
Yes, but only for impeachment and not as substantive evidence.

Correct Answer Logic:

Rule 801(d)(1)(B) defines as 'not hearsay' a prior consistent statement offered to rebut a charge of recent fabrication or improper influence/motive, provided the statement was made *before* the motive to lie arose.

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Information Technology QUESTION #1113

Question 885

What is the main goal of Capability Maturity Model Integration (CMMI)?

To enhance maturity of software process✔️
To increase the quality of software
To provide user friendly experience
None of these

Correct Answer Logic:

The primary objective of CMMI is to provide a framework for improving the maturity of an organization's processes to improve performance and product quality.

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Biology QUESTION #533

Question 886

Name the external factor of growth in plants

Carbon dioxide✔️
Water
Hormones
Nutrition

Correct Answer Logic:

Answer key shows A, but water (B) is also external

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Boilers Mechanical Engineering QUESTION #4047

Question 887

'Exfiltration' in a boiler furnace refers to:

Air leaking in
Flue gases leaking out of the setting✔️
Fuel leaking into the water
Water leaking into the fuel

Correct Answer Logic:

Usually happens in positive-pressure furnaces if the casing is not tight.

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Sociology QUESTION #1672

Question 888

Michel Foucault's concept of 'biopower' describes a historically specific modern form of power that operates not primarily through repression or juridical prohibition, but through which distinctive mechanism?

The control and regulation of entire populations through disciplinary techniques, normalization, and the administration of biological life itself✔️
The cultural shaping of biological traits through evolutionary selection pressure
The democratization and dispersal of knowledge to previously excluded populations
The reduction of human behavior to its biological and genetic determinants

Correct Answer Logic:

Foucault developed the concept of biopower in 'The History of Sexuality, Vol. 1' (1976) and 'Discipline and Punish' (1975) to describe modern power's focus on the management of life — both the disciplining of individual bodies (anatomo-politics) and the regulation of populations through statistics, public health, demography, and surveillance (biopolitics).

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Dairy Food Science and Technology QUESTION #5870

Question 889

In the Babcock test for fat determination, the acid used to digest protein and release fat is:

Acetic acid
Sulfuric acid $(\text{H}_2\text{SO}_4)$✔️
Hydrochloric acid
Nitric acid

Correct Answer Logic:

Concentrated $\text{H}_2\text{SO}_4$ is used in the Babcock test. It digests casein and other proteins, generates heat, and releases fat so it can be measured volumetrically in the Babcock bottle neck.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3151

Question 890

The 'Olfactory' receptors are located in the upper part of the:

Mouth
Nasal cavity✔️
Throat
Ear

Correct Answer Logic:

Smell is detected in the roof of the nasal cavity.

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Sociology QUESTION #1663

Question 891

The theoretical framework of 'base and superstructure,' in which the economic mode of production is held to determine all legal, political, religious, and cultural forms of social life, is a foundational concept of which sociological tradition?

Structural Functionalism
Symbolic Interactionism
Marxist historical materialism✔️
Rational Choice Theory

Correct Answer Logic:

In Marxist theory, the 'base' refers to the economic infrastructure — the means and relations of production — while the 'superstructure' encompasses all other social institutions (law, religion, politics, culture) that arise from and serve to legitimize the base. This is a core concept of historical materialism, not functionalism or symbolic interactionism.

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Physics QUESTION #7028

Question 892

A force acts on an object of mass $2\text{ kg}$ such that its position as a function of time is $x = 3t^2 + 5$. Calculate the work performed by this force during the first $5$ seconds of motion.

$850\text{ J}$
$950\text{ J}$
$875\text{ J}$
$900\text{ J}$✔️

Correct Answer Logic:

Work done is equal to the change in kinetic energy ($\Delta KE$). First, find velocity $v = \frac{dx}{dt} = 6t$. At $t=0$, $v_i = 0$. At $t=5$, $v_f = 6(5) = 30\text{ m/s}$. $\Delta KE = \frac{1}{2}m(v_f^2 - v_i^2) = \frac{1}{2}(2)(30^2 - 0) = 900\text{ J}$.

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Civil Engineering QUESTION #2132

Question 893

In transportation engineering, the California Bearing Ratio (CBR) test is used to:

Measure the compressive strength of subgrade soil for designing airport runways only
Evaluate the bearing capacity of subgrade and sub-base materials relative to a standard crushed stone material — the CBR value is used as input to empirical pavement thickness design methods (IRC, AASHTO) to determine required pavement structure depth✔️
Measure the permeability of road base materials for drainage design
Determine the optimum moisture content of subgrade soils for compaction

Correct Answer Logic:

CBR = (load to cause 2.5mm or 5.0mm penetration in test soil / load for same penetration in standard crushed stone) × 100%. It was developed by California Division of Highways and adopted worldwide for flexible pavement design. High CBR (>80%): excellent subgrade; medium (20–50%): fair; low (<5%): poor, requiring thick pavement. It is used in IRC:37, AASHTO, and most national pavement design guides.

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Chemistry QUESTION #5533

Question 894

The reaction $2X \to B$ is a zeroth order reaction. With initial $[X] = 0.2\ M$, the half-life is 6 h. Starting from $[X]_0 = 0.5\ M$, how long (in hours) does it take for $[X]$ to fall to 0.2 M?

9.0 h✔️
12.0 h
18.0 h
7.2 h

Correct Answer Logic:

For zeroth order: $t_{1/2} = \frac{[A]_0}{2k}$. Given $[X]_0=0.2\ M$ and $t_{1/2}=6\ h$: $k = \frac{0.2}{2\times6} = \frac{1}{60}\ M\,h^{-1}$. Now starting from $[X]_0=0.5\ M$, time to reach 0.2 M: $t = \frac{[A]_0 - [A]}{k} = \frac{0.5-0.2}{1/60} = 0.3\times60 = 18\ h$.

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Security Measures to Maintain Law and Order QUESTION #945

Question 895

How should a security officer handle a 'Diplomatic Bag'?

Open it for full inspection
Treat it according to international treaties✔️
Throw it away
Treat it like normal luggage

Correct Answer Logic:

Diplomatic bags are subject to specific international protocols (Vienna Convention) and usually cannot be opened.

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Accounting & Finance QUESTION #1194

Question 896

The purpose of reversing entries is:

To correct errors in the trial balance
To simplify recording certain transactions in the next period✔️
To adjust financial statements
To close permanent accounts

Correct Answer Logic:

Reversing entries are optional entries made at the beginning of the new accounting period to reverse certain adjusting entries (typically accruals). Their purpose is to simplify the recording of related transactions in the next period — for example, reversing an accrued salary entry so the next payroll can be recorded normally without splitting amounts.

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Biology QUESTION #4253

Question 897

Chemicals that stimulate the olfactory receptors enter the nasal cavity in the form of ____________.

solid
liquid
gas✔️
plasma

Correct Answer Logic:

Odorant chemicals enter as gases.

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MCQs Section QUESTION #4838

Question 898

Pick the word nearly similar in meaning to "TORPOR"

Fever
Lethargy✔️
Taciturn
Torrid

Correct Answer Logic:

Torpor means a state of physical or mental inactivity; sluggishness or dormancy. Lethargy, meaning lack of energy and enthusiasm, is its closest synonym.

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General Abilities QUESTION #4571

Question 899

If average of $5$ numbers is $20$, what is their sum?

$25$
$100$✔️
$15$
$4$

Correct Answer Logic:

Sum = Average $\times$ Count = $20 \times 5 = 100$

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Chemistry QUESTION #7520

Question 900

1 g of a carbonate M$_2$CO$_3$ reacts with excess HCl and produces 0.01186 mol of CO$_2$. What is the molar mass of M$_2$CO$_3$ (in g mol$^{-1}$)?

84.3✔️
118.6
11.86
1186

Correct Answer Logic:

From the reaction: M$_2$CO$_3 + 2\text{HCl} \to 2\text{MCl} + \text{H}_2\text{O} + \text{CO}_2$

1 mol M$_2$CO$_3$ produces 1 mol CO$_2$.

Moles of M$_2$CO$_3 =$ moles of CO$_2 = 0.01186\ \text{mol}$

Molar mass $= \dfrac{1\ \text{g}}{0.01186\ \text{mol}} \approx \mathbf{84.3\ \text{g mol}^{-1}}$

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