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Biomedical Sciences QUESTION #3812

What are the correct five classes of immunoglobulins found in the human immune system?

A, B, C, D, E
A, B, D, E, G
A, D, E, G, M✔️
A, C, E, G, M

Correct Answer Logic:

The five classes of immunoglobulins are IgA, IgD, IgE, IgG, and IgM. There are no immunoglobulin classes designated B or C.

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Chemistry QUESTION #1097

Question 682

Dalton's Atomic theory could NOT explain which of the following?

Law of multiple proportion
Law of gaseous volume✔️
Law of conservation of mass
Law of constant proportion

Correct Answer Logic:

Dalton's Atomic theory successfully explained: Law of conservation of mass, Law of constant proportion, and Law of multiple proportions. It could NOT explain Gay-Lussac's Law of Gaseous Volumes (Law of combining volumes) because Dalton's theory did not account for the concept of molecules vs atoms in gases.

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Physics QUESTION #4410

Question 683

Mechanical waves cannot travel through outer space because they:

Have low speed in vacuum
Disperse in space due to long wavelength
Lose frequency in the absence of air
Lose transmission without interacting particles✔️

Correct Answer Logic:

Mechanical waves (sound, seismic waves) require a material medium (particles) to propagate — they transfer energy through the vibration of particles. In outer space (vacuum), there are no particles to interact with, so mechanical waves cannot travel.

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English QUESTION #2697

Question 684

Which mark is used to show a sudden break in thought?

Comma
Dash✔️
Semicolon
Colon

Correct Answer Logic:

A dash (—) is used to indicate a sudden break, an interruption, or an abrupt change in thought.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3437

Question 685

'Urea' is the main end product of the metabolism of:

Carbohydrates
Fats
Proteins (Amino acids)✔️
Nucleic acids

Correct Answer Logic:

The urea cycle in the liver removes toxic ammonia from the body.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3040

Question 686

Which method is used for sterilizing heat-sensitive liquids like vaccines?

Autoclaving
Filtration✔️
Hot air oven
Direct flaming

Correct Answer Logic:

Filtration through bacteria-proof filters is used for thermolabile (heat-sensitive) liquids.

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Boilers Mechanical Engineering QUESTION #4019

Question 687

The 'Boiling Point' of water inside a boiler at $10~bar$ pressure is:

Exactly $100^\circ\text{C}$
Higher than $100^\circ\text{C}$✔️
Lower than $100^\circ\text{C}$
The same as at sea level

Correct Answer Logic:

As pressure increases, the boiling temperature of water also increases.

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Education QUESTION #1480

Question 688

Which philosophical concept is concerned with the nature of values and asks 'What is good?'

Metaphysics
Epistemology
Logic
Axiology✔️

Correct Answer Logic:

Axiology is the study of values and asks the question 'What is good?' From axiology we arrive at an understanding of ethics.

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Biology QUESTION #4323

Question 689

Which of the following cells possess Nissl's granules?

Nerve cells✔️
WBC
RBC
Platelets

Correct Answer Logic:

Nissl granules (Nissl bodies) are characteristic structures found in the cytoplasm of neurons. They are composed of rough ER and ribosomes and are involved in protein synthesis.

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Electrical Engineering QUESTION #2175

Question 690

A single-phase transformer has $N_1 = 500$ turns and $N_2 = 100$ turns. Primary is connected to $230\,\text{V}$ AC. The secondary feeds a $10\,\Omega$ resistive load. Neglecting all losses, the primary current drawn from the source is:

$0.92\,\text{A}$✔️
$4.6\,\text{A}$
$46\,\text{A}$
$0.184\,\text{A}$

Correct Answer Logic:

$V_2 = \frac{N_2}{N_1}V_1 = \frac{100}{500}\times230 = 46\,\text{V}$. $I_2 = V_2/R = 46/10 = 4.6\,\text{A}$. By current transformation: $I_1 = I_2\times\frac{N_2}{N_1} = 4.6\times\frac{100}{500} = 0.92\,\text{A}$.

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Biology QUESTION #4271

Question 691

Total number of linkage groups in a normal human is:

02
23✔️
46
92

Correct Answer Logic:

Humans have 46 chromosomes (23 pairs), but the number of linkage groups equals the haploid chromosome number, which is 23.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3506

Question 692

'Castor Oil' is obtained from the seeds of 'Ricinus communis'. It is used as a:

Potent Purgative✔️
Skin moisturizer only
Cooking oil
Flavoring agent

Correct Answer Logic:

Castor oil is a stimulant laxative.

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Professional QUESTION #1835

Question 693

Under Section 11(3), the service of a civil servant in temporary employment or appointed ad hoc shall be liable to termination on notice of how many days, or pay in lieu thereof?

Seven days
Ten days
Fourteen days✔️
Thirty days

Correct Answer Logic:

Section 11(3) provides that notwithstanding the provisions of sub-section (1), the service of a civil servant in temporary employment or appointed ad hoc shall be liable to termination on fourteen days' notice or pay in lieu thereof. This is the prescribed notice period and is not subject to deviation.

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Mathematics QUESTION #4111

Question 694

How many distinct cyclic subgroups does $\mathbb{Z}_{18}$ have?

$4$
$6$✔️
$9$
$18$

Correct Answer Logic:

Cyclic subgroups correspond to divisors of 18: 1, 2, 3, 6, 9, 18. Total 6 subgroups.

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Basic Mathematics QUESTION #2862

Question 695

Find the value of each interior angle of a regular hexagon.

100°
110°
120°✔️
135°

Correct Answer Logic:

Sum of interior angles of a polygon with $n$ sides $= (n-2) \times 180°$. For hexagon $(n=6)$: $= 4 \times 180° = 720°$. Each angle $= \dfrac{720°}{6} = 120°$.

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Psychology QUESTION #1466

Question 696

Which theory of intelligence proposes that there are three types of intelligence: analytical, creative, and practical?

Howard Gardner's Theory of Multiple Intelligences
Robert Sternberg's Triarchic Theory of Intelligence✔️
Spearman's Two-Factor Theory
Cattell-Horn-Carroll Theory

Correct Answer Logic:

Robert Sternberg's Triarchic Theory of Intelligence (1985) proposes three types: (1) Analytical (componential) — academic problem-solving; (2) Creative (experiential) — novel and adaptive thinking; (3) Practical (contextual) — 'street smart', adapting to real-world environments. Gardner's theory proposes 8–9 multiple intelligences; Spearman proposed g-factor and s-factors; Cattell-Horn-Carroll distinguishes fluid and crystallized intelligence.

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General Knowledge QUESTION #282

Question 697

World Tourism Day is observed every year on:

25 September
26 September
27 September✔️
None of these

Correct Answer Logic:

Since 1980, it has been observed globally on September 27.+1

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Commerce QUESTION #1218

Question 698

Which of the following statements is generally correct about the reliability of audit evidence?

To be reliable, evidence should be conclusive rather than persuasive
Effective internal control system provides reliable audit evidence✔️
Evidence obtained from outside sources routed through the client
All of these

Correct Answer Logic:

An effective internal control system reduces the risk of material misstatement, making the audit evidence obtained in a well-controlled environment more reliable. Option (A) is incorrect — audit evidence is generally persuasive, not conclusive. Option (C) is incorrect — evidence from outside sources routed through the client is less reliable than direct external confirmation.

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Mathematics QUESTION #4118

Question 699

Which IS a valid basis for the subspace of symmetric $2 \times 2$ matrices?

$\left\{\begin{pmatrix} 1 & 0 \ 0 & 0 \end{pmatrix}, \begin{pmatrix} 0 & 0 \ 0 & 1 \end{pmatrix}\right\}$
$\left\{\begin{pmatrix} 1 & 1 \ 1 & 0 \end{pmatrix}, \begin{pmatrix} 0 & 1 \ 1 & 1 \end{pmatrix}, \begin{pmatrix} 1 & 0 \ 0 & 1 \end{pmatrix}\right\}$
$\left\{\begin{pmatrix} 1 & 0 \ 0 & 0 \end{pmatrix}, \begin{pmatrix} 0 & 1 \ 1 & 0 \end{pmatrix}, \begin{pmatrix} 0 & 0 \ 0 & 1 \end{pmatrix}\right\}$✔️
$\left\{\begin{pmatrix} 1 & 1 \ 0 & 0 \end{pmatrix}, \begin{pmatrix} 0 & 0 \ 1 & 1 \end{pmatrix}, \begin{pmatrix} 1 & 0 \ 0 & 1 \end{pmatrix}\right\}$

Correct Answer Logic:

Option C gives standard basis for symmetric matrices. Option A has only 2 matrices (dimension 3 needed). Option B matrices are linearly dependent. Option D contains non-symmetric matrices.

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Therapeutics and Patient Care QUESTION #3883

Question 700

For which drug class is laxative use most likely to be required as a routine preventative measure against a predictable adverse effect?

Piroxicam
Oxycodone✔️
Cefalexin
Dexamethasone

Correct Answer Logic:

Opioids including oxycodone cause constipation in virtually all patients by reducing GI motility and increasing sphincter tone. Prophylactic laxative therapy is standard practice.

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