Reading Mode - Questions

The froth floatation method is primarily used for the concentration of sulphide ores. Among the options, Galena ($PbS$) is a sulphide ore, while Siderite and Malachite are carbonates, and Magnetite is an oxide. Therefore, Galena is the best fit for this method.

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MCQs Section QUESTION #4900

Question 1104

A letter by Mark Twain _____ reveals that Twain provided financial assistance to one of the first Black students at Yale Law School.

written in the same year as The Adventures of Huckleberry Finn were published
written in the same year of publication as The Adventures of Huckleberry Finn
written in the same year that The Adventures of Huckleberry Finn was published✔️
Mark Twain wrote a letter in the same year as he published The Adventures of Huckleberry Finn that

Correct Answer Logic:

The Adventures of Huckleberry Finn is a singular title so the verb must be 'was published,' not 'were published.' Option A uses 'were' incorrectly. Option B is ambiguous. Option D creates a misplaced modifier where 'that' could refer to either the letter or Huckleberry Finn.

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English QUESTION #7639

Question 1105

Change the narration: He said, "May I open the window? It's rather hot in here."

He said might he open the window. It was rather hot in there.
He asked if he might open the window. He mentioned it was rather hot in there.✔️
He asked if he might open the window as it was rather hot in there?
None of these

Correct Answer Logic:

When converting direct speech requesting permission to indirect speech, 'may' changes to 'might', and the reporting verb 'said' changes to 'asked'. The statement about temperature is reported separately using 'mentioned' or 'said'. Both parts need to be connected appropriately.

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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3111

Question 1106

'External Respiration' refers to the exchange of gases between:

Blood and tissue cells
Alveoli and blood✔️
Atmosphere and trachea
Mitochondria and cytoplasm

Correct Answer Logic:

External respiration occurs in the lungs; Internal respiration occurs at the tissue level.

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General Abilities QUESTION #7655

Question 1107

If $a : b : c = 3 : 4 : 7$, then the ratio $(a+b+c) : x$ is equal to:

$2 : 1$
$14 : 3$
$7 : 2$
None of these✔️

Correct Answer Logic:

Given $a : b : c = 3 : 4 : 7$. Let $a = 3k$, $b = 4k$, $c = 7k$. Then $a + b + c = 3k + 4k + 7k = 14k$. The question asks for ratio with 'x' which is not defined in the original problem, making this question incomplete. The answer would be 'None of these' due to insufficient information.

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English QUESTION #2656

Question 1108

Convert to direct speech: 'He asked if I would help him.'

He said, "Will you help me?"✔️
He said, "Would you help me?"
He said, "Do you help me?"
He said, "Can you help me?"

Correct Answer Logic:

The word 'asked' and 'if' indicate a yes/no question starting with 'will' in the future.

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Boilers Mechanical Engineering QUESTION #2419

Question 1109

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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Chemistry QUESTION #7418

Question 1110

In which of the following options does the arrangement NOT agree with the property variation indicated against it?

$\text{Al}^{3+} < \text{Mg}^{2+} < \text{Na}^+ < \text{F}^-$ (increasing ionic size)
B < C < N < O (increasing first ionisation enthalpy)✔️
$\text{I} < \text{Br} < \text{Cl} < \text{F}$ (increasing electron gain enthalpy)
Li < Na < K < Rb (increasing metallic radius)

Correct Answer Logic:

IE₁ trend in Period 2:
Generally increases left to right, but N (half-filled 2p³) has unexpectedly higher IE₁ than O (2p⁴, one electron paired → easier to remove). So:

Correct order: B < C < O < N (N before O is reversed)

The statement B < C < N < O suggests O has higher IE₁ than N — this is wrong. Option (2) is incorrect.

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General Abilities QUESTION #4562

Question 1111

What is the reciprocal of $\frac{5}{7}$?

$\frac{-5}{7}$
$\frac{7}{5}$✔️
$\frac{5}{7}$
$\frac{1}{35}$

Correct Answer Logic:

Reciprocal of $\frac{a}{b}$ is $\frac{b}{a}$. So reciprocal of $\frac{5}{7}$ is $\frac{7}{5}$

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Math Physics Chemistry Biology QUESTION #574

Question 1112

The colour phenotype of the grain is the sum of individual effects of _____ alleles.

Six✔️
Five
Four
Five or three

Correct Answer Logic:

Polygenic trait controlled by multiple alleles

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Urdu QUESTION #5146

Question 1113

اینٹ سے اینٹ بجانا محاورے کا مطلب ہے؟

امید پوری ہونا
تباہ و برباد کرنا✔️
بے عزت کرنا
بہت زیادہ شور کرنا

Correct Answer Logic:

اینٹ سے اینٹ بجانا محاورے کا مطلب ہے مکمل تباہ و برباد کر دینا۔

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CISA QUESTION #6860

Question 1114

An IS auditor discovers that an organization's information security manager (ISM) also serves as the primary system administrator with full access to all systems. What is the PRIMARY concern?

Excessive workload
Violation of segregation of duties—ISM should oversee controls but not implement/operate them✔️
Insufficient staffing
Lack of specialization

Correct Answer Logic:

Information security management must be independent of operations to provide objective oversight. When the ISM also serves as system administrator, they effectively oversee their own work, eliminating independent verification of security controls. The ISM should define requirements and audit compliance, not implement and operate systems.

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Urdu QUESTION #5134

Question 1115

والدِ اقبال نے علامہ اقبال کی آپ بیتی کس نام سے لکھی؟

اقبال نامہ
زندہ رود✔️
اقبال کی زندگی
ان میں سے کوئی نہیں

Correct Answer Logic:

زندہ رود جاوید اقبال کی لکھی ہوئی علامہ اقبال کی سوانح عمری ہے۔

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Paper-II (Pharmacognosy and Pharmaceutics-I) QUESTION #3616

Question 1116

'Organoleptic' evaluation of a drug refers to evaluation by:

Chemical titration
Microscopic examination
Means of sense organs (color, odor, taste)✔️
Animal testing

Correct Answer Logic:

It is the simplest method using sight, smell, and touch.

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Math (Module-1) QUESTION #5470

Question 1117

Line $t$ in the $xy$-plane has slope $-\frac{1}{3}$ and passes through $(9, 10)$. Which equation defines line $t$?

$y = \frac{1}{3}x - 13$
$y = 9x + 10$
$y = -\frac{x}{3} + 10$
$y = -\frac{x}{3} + 13$✔️

Correct Answer Logic:

$y - 10 = -\frac{1}{3}(x - 9) \implies y = -\frac{1}{3}x + 3 + 10 \implies y = -\frac{1}{3}x + 13$.

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Math Physics Chemistry Biology QUESTION #4323

Question 1118

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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Math Physics Chemistry Biology QUESTION #7755

Question 1119

The active mass movement of mitochondria and other organelles in the cytoplasm is due to:

Cyclosis (cytoplasmic streaming)✔️
ER streaming movements
Golgi apparatus
Transfer RNA

Correct Answer Logic:

Cyclosis (cytoplasmic streaming) is the directed flow of cytosol that moves organelles like mitochondria. It is driven by actin-myosin interactions.

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Chemistry QUESTION #5518

Question 1120

Match the drugs in Column I with the appropriate chemical test in Column II:

Column I	Column II
(A) Chloroxylenol	(P) Carbylamine test
(B) Norethindrone	(Q) Sodium hydrogencarbonate test
(C) Sulphapyridine	(R) Ferric chloride test
(D) Penicillin	(S) Bayer's test

$A \to R;\ B \to P;\ C \to S;\ D \to Q$✔️
$A \to Q;\ B \to S;\ C \to P;\ D \to R$
$A \to R;\ B \to S;\ C \to P;\ D \to Q$
$A \to Q;\ B \to P;\ C \to S;\ D \to R$

Correct Answer Logic:

Chloroxylenol contains a phenolic –OH group → Ferric chloride test (R). Norethindrone has a primary amine group → Carbylamine test (P). Sulphapyridine contains a C=C double bond (unsaturation) → Bayer's test (S). Penicillin is a carboxylic acid → Sodium hydrogencarbonate test (Q). So: $A \to R,\ B \to P,\ C \to S,\ D \to Q$.

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