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General Knowledge QUESTION #8801

Question 4161

Marty Cooper is known for inventing which device?

Digital Computer
AIDS Vaccine
Mobile Phone✔️
Solar Energy

Correct Answer Logic:

Martin Cooper invented the first mobile phone.

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Ability / HR / Governance / Special Education QUESTION #1815

Question 4162

Under Rule 37A (Unsolicited Proposal), what additional weightage in percentage is awarded to the initiator of an unsolicited proposal during combined evaluation?

Three percent
Five percent✔️
Seven percent
Ten percent

Correct Answer Logic:

Rule 37A(1)(d) inserted via S.R.O. 442(I)/2020 provides that the initiator of a viable unsolicited proposal is exempt from prequalification and is additionally awarded five percent additional weightage during the combined evaluation of their proposal against competing bidders.

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Bio-Technology QUESTION #10556

Question 4163

Which molecule serves as the primary universal energy currency in microbial cells?

NADH
FADH₂
ATP✔️
GTP

Correct Answer Logic:

ATP (adenosine triphosphate) is the universal energy currency. Energy released from substrate oxidation is conserved as ATP via substrate-level phosphorylation or oxidative phosphorylation. NADH and FADH₂ are electron carriers that feed into the electron transport chain to generate ATP, making ATP the final common energy unit for all biosynthetic work.

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Math Physics Chemistry Biology QUESTION #814

Question 4164

How many zones does the charge pass through in a rotary kiln?

4
2
3✔️
5

Correct Answer Logic:

In a rotary kiln used in cement manufacture, the material passes through 3 zones: the drying/preheating zone, the calcination zone, and the clinkering (burning) zone.

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Agronomy QUESTION #2094

Question 4165

The concept of 'phenotypic plasticity' in crop adaptation to variable environments refers to:

The ability of a plant's DNA sequence to mutate in response to environmental stress
The capacity of a single genotype to express a range of phenotypes (morphological, physiological, or behavioral) in response to different environmental conditions — without genetic change — allowing crops to partially buffer yield across variable environments✔️
The selection of different varieties (genotypes) for each target environment
The use of plastic mulch films to modify the crop microenvironment

Correct Answer Logic:

Phenotypic plasticity describes genotype × environment (G×E) interaction at the individual plant level: one genotype producing different trait expressions (leaf area, tiller number, root architecture, phenology) across environments. Crops with high plasticity can partially self-regulate resource capture. Breeders must distinguish genetic adaptation (G) from plasticity (GEI) when evaluating varieties across diverse environments.

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Civil Procedure QUESTION #5666

Question 4166

A plaintiff moves for summary judgment under Rule 56. The defendant opposes the motion with an affidavit from a witness that contains hearsay. The plaintiff does not object to the affidavit. The court grants summary judgment. On appeal, can the plaintiff raise the hearsay objection for the first time?

Yes, because hearsay is inherently unreliable and the court should have excluded it sua sponte.
No, because a party must object to the admissibility of evidence in a summary judgment motion to preserve the issue for appeal.✔️
Yes, because Rule 56 requires 'admissible' evidence, and hearsay is not admissible.
No, because summary judgment rulings are reviewed de novo and the appellate court will ignore the hearsay anyway.

Correct Answer Logic:

Generally, evidentiary objections not raised in the trial court are waived. In the context of summary judgment, if a party fails to move to strike or otherwise object to an affidavit, the objection is usually waived.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3583

Question 4167

Which of the following is considered an 'Organized' crude drug?

Castor oil
Opium latex
Cinchona bark✔️
Acacia mucilage

Correct Answer Logic:

Organized drugs possess a defined cellular structure (leaves, barks, roots), whereas unorganized drugs are secretions or extracts.

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General Knowledge QUESTION #8719

Question 4168

Who was the world's first female Prime Minister of a country?

Margaret Thatcher (England)
Srimavo Bandaranaike (Sri Lanka)✔️
Golda Meir (Israel)
Indira Gandhi (India)

Correct Answer Logic:

Sirimavo Bandaranaike became PM of Sri Lanka in 1960.

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Physics QUESTION #1184

Question 4169

The Lorentz force is given by:

F = q(v × B)✔️
Φ = ∂A/∂x + ∂A/∂y + ∂A/∂z
qF = q(v_d × B)
None of these

Correct Answer Logic:

The Lorentz force on a charge \(q\) moving with velocity \(\vec{v}\) in a magnetic field \(\vec{B}\) is \(\vec{F} = q(\vec{v} \times \vec{B})\). The full Lorentz force including the electric field is \(\vec{F} = q(\vec{E} + \vec{v} \times \vec{B})\). Option (B) is the divergence of vector potential (unrelated), and option (C) has incorrect notation.

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Agronomy QUESTION #2095

Question 4170

In cropping systems agronomy, the concept of 'system yield' as opposed to 'crop yield' emphasizes:

Maximizing the yield of the most economically valuable crop in the sequence
The total productivity, profitability, resource use efficiency, and sustainability of the entire sequence of crops grown on the same land over a year or multiple years — recognizing that management of one crop directly affects subsequent crops✔️
The yield of a single crop grown without any rotation or intercropping
The cumulative yield of all crops harvested from a single field in one calendar year

Correct Answer Logic:

System yield integrates the productivity of all component crops over time, accounting for carryover effects: residual nitrogen from legumes, disease/pest carryover, soil structure changes, and water use patterns. A cropping system may sacrifice individual crop yield to maximize system-level sustainability, profitability, and resource use efficiency — the central paradigm shift in modern cropping systems agronomy.

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MCQs Section QUESTION #4853

Question 4171

Choose the word nearly opposite in meaning to "PENCHANT"

Dislike✔️
Attitude
Imminence
Distance

Correct Answer Logic:

Penchant means a strong or habitual liking for something. Its antonym is 'dislike,' meaning a feeling of distaste or aversion toward something.

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English QUESTION #8540

Question 4172

The workman may seek indulgence _______ the Labour Court for his guaranteed rights.

Of
To
By
From✔️

Correct Answer Logic:

'Indulgence from' the court means permission or relief.

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Mathematics QUESTION #7486

Question 4173

If the function \(f: \mathbb{R} - \{1,-1\} \to A\) defined by \(f(x) = \frac{x^2}{1-x^2}\) is surjective, then A is equal to:

\(\mathbb{R} - \{-1\}\)
\([0,\infty)\)
\(\mathbb{R} - [-1,0)\)✔️
\(\mathbb{R} - (-1,0)\)

Correct Answer Logic:

To find the range, let \(y = \frac{x^2}{1-x^2}\). Solving for \(x^2\): \(y(1-x^2) = x^2\), so \(y = x^2 + yx^2 = x^2(1+y)\), giving \(x^2 = \frac{y}{1+y}\). For real x, we need \(\frac{y}{1+y} \geq 0\). This holds when \(y \geq 0\) and \(1+y > 0\) (i.e., \(y > -1\)), or \(y < 0\) and \(1+y < 0\) (i.e., \(y < -1\)). Combining: \(y \in (-\infty, -1) \cup [0, \infty) = \mathbb{R} - [-1,0)\). So A = \(\mathbb{R} - [-1,0)\).

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Mathematics QUESTION #1302

Question 4174

For the power series solution of \((x^2+1)y''+xy'-y=0\), we assume \(y=\sum_{n=0}^\infty a_n x^n\). This ODE has an ordinary point at \(x=0\) because:

The coefficients are all constants
All singular points are at \(x=\pm i\), not at \(x=0\)✔️
The equation is linear
The ODE is homogeneous

Correct Answer Logic:

Ordinary points are where \(P(x)=1+x^2\neq0\). The singular points are where \(P(x)=0\Rightarrow x^2+1=0\Rightarrow x=\pm i\). Since \(x=0\) is not a singular point, it is an ordinary point, and a power series solution \(\sum a_n x^n\) converges in a neighbourhood of \(x=0\).

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Accounting & Finance QUESTION #6201

Question 4175

The 'Financial Cash Flow Identity' states that Cash Flow from Assets equals:

Operating Cash Flow minus Taxes.
Cash Flow to Creditors plus Cash Flow to Stockholders.✔️
Net Income plus Depreciation.
Current Assets minus Current Liabilities.

Correct Answer Logic:

Cash generated by assets must be distributed to those who financed them (creditors and owners) [cite: 22, 27].

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Dairy Food Science and Technology QUESTION #5921

Question 4176

The process of 'tempering' milk before cheese making refers to:

Adding rennet to cold milk to delay coagulation
Adjusting the temperature of pasteurized milk to the optimal coagulation temperature (\(30\text{–}32^{\circ}\text{C}\) for most cheeses)✔️
Standardizing the fat content to the desired level
Adding calcium chloride to improve rennet coagulation

Correct Answer Logic:

After pasteurization and cooling, milk must be tempered (warmed) to the coagulation temperature, typically \(28\text{–}35^{\circ}\text{C}\) depending on cheese variety. \(\text{CaCl}_2\) (\(0.01\text{–}0.02\%\)) is also commonly added to restore calcium ions lost during pasteurization and improve gel firmness.

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Boilers Mechanical Engineering QUESTION #4047

Question 4177

'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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Mathematics QUESTION #4091

Question 4178

Consider \(T:\mathbb{R}^3\to\mathbb{R}^2\) defined by \(T(x,y,z)=(|x|,y+z)\). To show \(T\) is NOT linear, the simplest counterexample uses scalar multiplication with \(c=-1\) and vector \((1,0,0)\):

Both \(T(c\mathbf{v})\) and \(cT(\mathbf{v})\) equal \((1,0)\)
Both equal \((-1,0)\)
They differ: \(T(-1,0,0)=(1,0)\) but \(-T(1,0,0)=(-1,0)\)✔️
They differ: \(T(-1,0,0)=(0,-1)\) but \(-T(1,0,0)=(0,1)\)

Correct Answer Logic:

For linearity, \(T(c\mathbf{v})=cT(\mathbf{v})\). With \(\mathbf{v}=(1,0,0)\) and \(c=-1\): \(T(-1,0,0)=(|-1|,0)=(1,0)\), but \(-1\cdot T(1,0,0)=-1\cdot(1,0)=(-1,0)\). Since \((1,0)\neq(-1,0)\), \(T\) is NOT linear — homogeneity fails.

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Education QUESTION #11680

Question 4179

What does the Null Hypothesis state in the context of statistical research?

The difference between two parametric means is zero
The difference is due to sampling error
Both A and B✔️
None of these

Correct Answer Logic:

The Null Hypothesis (H&sub0;) asserts that there is no significant difference between groups or that any observed difference is due to chance (sampling error). In formal statistical terms, it states that the difference between population means is zero (A), and that any observed difference results from sampling variability (B). Both A and B together define it correctly.

Correct Answer: C — Both A and B.

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Electronics Engineering QUESTION #11744

Question 4180

A DMM on resistance range is connected to a powered circuit (even a low-voltage one). The consequence is:

The circuit provides reference current improving measurement accuracy
Possible damage to the DMM's internal reference resistors and false readings✔️
The DMM auto-ranges to the current mode safely
No effect — modern DMMs are protected against up to 1000 V on all ranges

Correct Answer Logic:

A DMM in resistance mode applies its own internal current source (~0.5–1 mA) through the internal reference resistors. Applying external voltage while in resistance mode causes excessive current through the precision resistor network, producing false readings and permanent damage to internal components. Always de-energise and discharge circuits before resistance measurements.

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