Reading Mode - Questions

Aiming at the base of the fire targets the fuel source. Extinguishing agent applied to the flames themselves without addressing the fuel will not stop combustion.

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Chemistry QUESTION #1013

Question 5106

Statement (I): A spectral line will be observed for a $2p_x \to 2p_y$ transition. Statement (II): $2p_x$ and $2p_y$ are degenerate orbitals.

Both Statement I and Statement II are true
Statement I is false but Statement II is true✔️
Both Statement I and Statement II are false
Statement I is true but Statement II is false

Correct Answer Logic:

Statement II is true — $2p_x$, $2p_y$, and $2p_z$ are degenerate (equal energy) in a hydrogen-like atom. Statement I is false — since $2p_x$ and $2p_y$ have the same energy, a transition between them involves no energy change and therefore no spectral line is observed.

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Civil Procedure QUESTION #5684

Question 5107

Which of the following is NOT a required part of a Rule 26(a)(1) initial disclosure?

A computation of each category of damages claimed.
The name and contact info of every individual likely to have discoverable information that the party 'may use' to support its claims.
A copy of all insurance agreements that may be liable to satisfy a judgment.
A list of all prior lawsuits the party has been involved in over the last 5 years.✔️

Correct Answer Logic:

Rule 26(a)(1)(A) lists the required disclosures: individuals with discoverable info, documents/ESI, damage computations, and insurance agreements. Prior litigation history is not a required initial disclosure.

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Physics QUESTION #4406

Question 5108

An incompressible fluid flows through a pipe that becomes narrower in one section. The fluid speed increases in that region to maintain:

Constant pressure
Constant energy
Constant mass flow rate✔️
Constant volume

Correct Answer Logic:

By the equation of continuity: $A_1v_1 = A_2v_2$. For an incompressible fluid, the volume flow rate (and hence mass flow rate) must remain constant. When area decreases, velocity increases to maintain $\dot{m} = \rho Av = $ constant.

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Statistics QUESTION #1978

Question 5109

Given $n_1 = 2$ samples with replacement from population $\{4, 6, 8\}$ and $n_2 = 2$ from $\{1, 2, 3\}$, the variance of the sampling distribution of $\bar{X}_1 - \bar{X}_2$ equals:

$\dfrac{\sigma_1^2}{n_1} - \dfrac{\sigma_2^2}{n_2}$
$\dfrac{\sigma_1^2}{n_1} + \dfrac{\sigma_2^2}{n_2}$✔️
$\sigma_1^2 + \sigma_2^2$
$\dfrac{\sigma_1^2 + \sigma_2^2}{n_1 + n_2}$

Correct Answer Logic:

For independent samples, $\sigma^2_{\bar{X}_1 - \bar{X}_2} = \dfrac{\sigma_1^2}{n_1} + \dfrac{\sigma_2^2}{n_2}$. For population $\{4,6,8\}$: $\mu_1=6$, $\sigma_1^2 = \frac{8}{3}$. For $\{1,2,3\}$: $\mu_2=2$, $\sigma_2^2=\frac{2}{3}$. So variance $= \frac{8/3}{2}+\frac{2/3}{2} = \frac{4}{3}+\frac{1}{3}=\frac{5}{3}$.

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Reading and Writing (Module-1) QUESTION #5431

Question 5110

Some bird species don't raise their own chicks but lay eggs in other birds' nests. Female cuckoos lay eggs quickly when host birds are away. After hatching, host parents raise cuckoo chicks as their own. Which choice best describes the function of the underlined sentence?

It introduces a physical feature of female cuckoos described later.
It describes the appearance of cuckoo nests mentioned earlier.
It offers a detail about how female cuckoos carry out the behavior discussed.✔️
It explains how other birds react to the female cuckoo behavior.

Correct Answer Logic:

The underlined sentence gives a specific timing detail about cuckoo egg-laying behavior.

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Biology QUESTION #4201

Question 5111

The digestive secretions from different parts of GIT have the ability to kill microbe present in the food. Which of the following best describe this role?

Antiseptics
Disinfectants✔️
Chemotherapeutics
Immunosuppressant

Correct Answer Logic:

Digestive secretions act as disinfectants by killing microbes in the digestive tract.

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3009

Question 5112

Which of the following is a 'Flocculating Agent' used in suspensions?

Electrolytes
Surfactants
Polymers
All of these✔️

Correct Answer Logic:

Electrolytes, surfactants, and polymers can all be used to form 'flocs' to improve suspension stability.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3119

Question 5113

Hydrochloric Acid (HCl) is secreted by which cells in the stomach?

Chief cells
Parietal cells✔️
Mucous cells
G-cells

Correct Answer Logic:

Parietal cells secrete HCl and intrinsic factor (necessary for Vitamin $B_{12}$ absorption).

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Civil Procedure QUESTION #3688

Question 5114

A plaintiff (State A) sues Defendant 1 (State B) and Defendant 2 (State B) for $\text{\$100,000}$ in federal court. Defendant 1 files a cross-claim against Defendant 2 for $\text{\$10,000}$ arising out of the same car accident. Defendant 2 moves to dismiss the cross-claim for lack of subject-matter jurisdiction because it is under $\text{\$75,000}$. How should the court rule?

Grant the motion, because the cross-claim does not meet the amount in controversy.
Grant the motion, because there is no diversity between Defendant 1 and Defendant 2.
Deny the motion, because the court has supplemental jurisdiction over the cross-claim.✔️
Deny the motion, because cross-claims are always federal questions.

Correct Answer Logic:

Under 28 U.S.C. $\S 1367$, the court has supplemental jurisdiction over cross-claims (Rule 13(g)) that arise from the same transaction or occurrence as the original claim, regardless of the amount or diversity between the co-defendants.

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Agronomy QUESTION #2062

Question 5115

In drip fertigation, urea is preferred over ammonium nitrate for nitrogen supply primarily because:

Urea has higher N content (46%) and remains soluble in irrigation water without precipitating or corroding drip emitters under normal conditions✔️
Ammonium nitrate is less soluble in water
Urea immediately converts to nitrate before entering drip lines
Ammonium nitrate causes salt injury to crops when fertigated

Correct Answer Logic:

Urea (46% N) is the most commonly fertigated N source because it is highly soluble (1080 g/L at 20°C), non-ionic (does not react with Ca, Mg, or carbonates in irrigation water to precipitate), and non-corrosive to metal emitters. Ammonium nitrate, while soluble, can react with hard water and poses explosion risk in storage.

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Biology QUESTION #538

Question 5116

Which of the following is used for lowering blood cholesterol?

Neurospora
Griseofulvin
Aspergillus
Lovastatin✔️

Correct Answer Logic:

Lovastatin lowers cholesterol

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English QUESTION #2761

Question 5117

Which sentence uses the SEMICOLON correctly?

She was tired; but she kept working.
She was tired; she kept working.✔️
She was tired; and she kept working.
She was tired; to keep working.

Correct Answer Logic:

A semicolon is used to join two independent (complete) clauses without a conjunction. 'She was tired; she kept working' correctly joins two complete sentences. A semicolon should not be used before conjunctions like 'but' or 'and'.

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