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English QUESTION #827

Question 3501

Pick the correct sentence about disagreeing:

Why did you disagree with me?✔️
Why did you disagree to me?
Why did you disagree on me?
Why did you disagree by me?

Correct Answer Logic:

The correct preposition after 'disagree' when referring to a person is 'with'. Correct: 'disagree with someone'.

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Islamic Studies QUESTION #8224

Question 3502

To which language does the word Salat belong?

Urdu
Arabic✔️
Persian
Punjabi

Correct Answer Logic:

The word 'Salat' (صلاة) is an Arabic word meaning prayer or connection. It is derived from the root 's-l-w' which means to pray, bless, or connect. In Urdu and Persian, prayer is called 'Namaz,' but the Quranic and Arabic term is 'Salat.' The word appears numerous times in the Quran and refers to the formal ritual prayer that is one of the Five Pillars of Islam.

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Mathematics QUESTION #6038

Question 3503

Let $\omega$ be a complex number with $2\omega+1=z$ where $z=\sqrt{-3}$. If $\begin{vmatrix}1&1&1\\1&-\omega^2-1&\omega^2\\1&\omega^2&\omega^7\end{vmatrix}=3k$, find $k$.

$-z$
$z$✔️
$-1$
$1$

Correct Answer Logic:

Since $z=\sqrt{-3}=i\sqrt{3}$ and $2\omega+1=i\sqrt{3}$, so $\omega=\frac{-1+i\sqrt{3}}{2}=e^{2\pi i/3}$ (a primitive cube root of unity).

Properties: $\omega^3=1$, $1+\omega+\omega^2=0$, so $-\omega^2-1=\omega$ and $\omega^7=\omega$.

Matrix becomes: $\begin{vmatrix}1&1&1\\1&\omega&\omega^2\\1&\omega^2&\omega\end{vmatrix}$

This determinant $= 3(\omega-\omega^2)\cdot... $ After evaluation $= 3i\sqrt{3} = 3z$... so $k=z$.

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Womens Health [Obs] [Gyn] QUESTION #8190

Question 3504

In the figure, lines $m$ and $k$ are parallel (m ∥ k), cut by a transversal. The angle on line $m$ is labeled $s°$ and the angle on line $k$ is labeled $t°$ (co-interior / same-side interior angles). If $s = t + 30$, what is the value of $t$?

$30$
$60$
$75$✔️
$80$

Correct Answer Logic:

Since $m \parallel k$, the angles $s°$ and $t°$ are co-interior (same-side interior) angles, which means they are supplementary:

$s + t = 180°$

We are also given: $s = t + 30$

Substituting: $(t + 30) + t = 180$

$2t + 30 = 180$

$2t = 150$

$t = 75°$

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Maths QUESTION #7997

Question 3505

$0.03 \times 10 = ?$

30
3✔️
0.3
0.003

Correct Answer Logic:

$0.03 \times 10 = 0.3$... Answer key gives B (3). $0.03 \times 10 = 0.3$, which is option C. Students should verify: multiply $0.03 \times 10$: move decimal one place right $= 0.3$.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3630

Question 3506

In the 'Homeopathic' system, drugs are selected based on the principle of:

Law of Opposites
'Similia Similibus Curentur' (Like cures like)✔️
Surgical intervention
Vaccination

Correct Answer Logic:

Homeopathy uses highly diluted substances that cause symptoms similar to the disease.

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MBBS QUESTION #10350

Question 3507

In the fed state, blood glucose regulation favors glycogen synthesis and glycolysis over gluconeogenesis and glycogenolysis, driven predominantly by rising levels of which hormone acting on liver, muscle, and adipose tissue?

Glucagon
Insulin✔️
Cortisol
Growth hormone

Correct Answer Logic:

Insulin, secreted in response to elevated blood glucose after a meal, promotes cellular glucose uptake, glycogen synthesis, and glycolysis while inhibiting gluconeogenesis, glycogenolysis, and lipolysis — the principal anabolic hormone coordinating the fed-state metabolic response.

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Education QUESTION #6759

Question 3508

A test is highly reliable but consistently measures vocabulary skill instead of reading comprehension as intended. According to the framework of validity and reliability, which statement is MOST accurate?

The test is both valid and reliable because reliability is the most important psychometric property
The test is reliable but not valid for its intended purpose; reliability is necessary but not sufficient for validity✔️
The test is valid because it consistently measures something — consistency itself defines validity
Both validity and reliability are compromised when the construct measured differs from the intended one

Correct Answer Logic:

This scenario illustrates the classic principle: a test can be reliable without being valid. Reliability (consistency) is a necessary but not sufficient condition for validity. Valid results require that the test measures what it claims to measure. Consistent measurement of the wrong construct produces reliable but invalid scores.

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English QUESTION #2749

Question 3509

Choose the correct ARTICLE: 'He is ___ engineer.'

a
an✔️
the
no article

Correct Answer Logic:

'An' is used before words beginning with a vowel sound. 'Engineer' begins with the vowel sound /ɛ/. So 'an engineer' is grammatically correct.

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General Knowledge QUESTION #4784

Question 3510

Which province in Afghanistan is the largest opium-producing region?

Helmand✔️
Nangarhar
Badakhshan
Kandahar

Correct Answer Logic:

Helmand province in southern Afghanistan is consistently the world's largest single source of illicit opium, accounting for a significant portion of Afghanistan's total opium production.

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English QUESTION #7543

Question 3511

Choose the correct meaning of the word pair "Brake and Break"

Brake = to stop; Break = to damage or pause.✔️
Brake = to destroy; Break = to stop.
Brake = rest; Break = to run.
Both mean "to control."

Correct Answer Logic:

Brake is a device for stopping a vehicle; "Break" means to separate into pieces or interrupt.

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Boilers Mechanical Engineering QUESTION #2419

Question 3512

The Stefan-Boltzmann Law gives the maximum heat flux emitted by a blackbody surface at absolute temperature $T_s$ as:

$q''_{SB} = \sigma T_s^2$
$q''_{SB} = \varepsilon\sigma T_s^4$
$q''_{SB} = \sigma T_s^4$ (blackbody, $\varepsilon=1$)✔️
$q''_{SB} = h_r(T_s - T_{surr})$

Correct Answer Logic:

Stefan-Boltzmann Law for a perfect blackbody ($\varepsilon=1$): $q''_{SB}=\sigma T_s^4$ where $\sigma=5.67\times10^{-8}$ W/m²·K⁴.

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Library Sciences QUESTION #1565

Question 3513

Which protocol enables interoperability between different library systems by allowing one system to query the catalogues of another using a standard search interface?

HTTP
FTP
Z39.50✔️
SMTP

Correct Answer Logic:

Z39.50 is a client-server protocol that enables one library system (client) to search and retrieve records from another system's database (server) using a standardized interface. It is fundamental to union catalogue searching, shared cataloguing, and federated search systems.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3568

Question 3514

Which drug is an 'Expectorant' (helps clear mucus)?

Senna
Vasaka (Adhatoda)✔️
Aloe
Castor oil

Correct Answer Logic:

Vasaka is a traditional remedy for bronchitis and cough.

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Electrical Engineering QUESTION #2164

Question 3515

A BJT common-emitter amplifier has $\beta = 100$, $R_C = 4\,\text{k}\Omega$, and $I_{C,Q} = 1\,\text{mA}$. The small-signal voltage gain $A_v$ (neglecting $r_o$) is:

$-154$✔️
$+154$
$-400$
$-100$

Correct Answer Logic:

$g_m = I_C/V_T = 1\,\text{mA}/26\,\text{mV} \approx 38.5\,\text{mS}$. $A_v = -g_m R_C = -38.5\,\text{mS} \times 4\,\text{k}\Omega \approx -154$.

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Physics QUESTION #401

Question 3516

A 2m long pipe is open at both ends. What is its harmonic frequency?

42.5 Hz
85 Hz✔️
220 Hz
None of these

Correct Answer Logic:

For open pipe: f = v/2L = 340/(2?2) = 85 Hz

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Planning QUESTION #4940

Question 3517

In environmental planning, what does BOD measure?

Building Occupancy Density
Biological Oxygen Demand✔️
Base of Development
Boundary of District

Correct Answer Logic:

BOD (Biological Oxygen Demand) measures the amount of oxygen microorganisms need to decompose organic matter in water, indicating water pollution levels and treatment requirements.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3251

Question 3518

The 'Pleural Cavity' is a fluid-filled space that:

Protects the heart
Protects the lungs and reduces friction during breathing✔️
Contains the stomach
Stores air

Correct Answer Logic:

The pleura allow the lungs to slide smoothly against the chest wall.

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Civil / Architecture QUESTION #2353

Question 3519

In LRFD design of steel tension members per AISC, the design strength for the fracture limit state (net section rupture) with $\phi_t = 0.75$ is:

$\phi_t P_n = 0.90 F_y A_g$
$\phi_t P_n = 0.75 F_u A_e$✔️
$\phi_t P_n = 0.85 F_y A_g$
$\phi_t P_n = 0.75 F_y A_e$

Correct Answer Logic:

For tension member fracture limit state: $\phi_t P_n = 0.75 F_u A_e$ where $F_u$ is the tensile strength, $A_e$ is the effective net area ($A_e = U \cdot A_n$, with $U$ being the shear lag factor), and $\phi_t = 0.75$. For yielding on the gross section: $\phi_t P_n = 0.90 F_y A_g$. The governing limit state is the lesser value.

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General Knowledge QUESTION #4683

Question 3520

Robert Mugabe served in what capacity?

President of Zimbabwe✔️
President of Kenya
Prime Minister of Angola
Prime Minister of Tanzania

Correct Answer Logic:

Robert Mugabe was the President of Zimbabwe from 1987 to 2017, having previously served as Prime Minister since independence in 1980.

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