Reading Mode - Questions

Security Measures to Maintain Law and Order QUESTION #916

Question 1

Which is a vital element of a security team's communication strategy?

Using personal mobile devices
Standardized radio protocols✔️
Exclusive use of hand signals
Face-to-face verbalizing only

Correct Answer Logic:

Standardized protocols ensure reliable coordination and rapid response during security incidents.

Uploaded by: Fani Warraich

Agronomy QUESTION #2104

Question 2

The 'compensation point' in crop photosynthesis refers to:

The temperature at which photosynthesis equals the maximum theoretical rate
The light intensity (light compensation point) or CO₂ concentration (CO₂ compensation point) at which gross photosynthesis exactly equals total respiration — net carbon exchange is zero, representing the minimum light or CO₂ level for positive carbon balance✔️
The point at which stomatal conductance equals mesophyll conductance, maximizing CO₂ diffusion into chloroplasts
The crop growth stage at which leaf area index reaches its maximum and canopy photosynthesis is saturated

Correct Answer Logic:

The light compensation point (LCP) is the irradiance where photosynthetic CO₂ fixation = respiratory CO₂ release (net photosynthesis = 0). Shade-adapted species have lower LCPs than sun plants. The CO₂ compensation point (Γ) differs between C3 (~40–50 ppm CO₂) and C4 plants (~5–10 ppm) due to C4 CO₂ concentrating mechanism eliminating photorespiration — explaining C4 superiority in hot, high-light environments.

Uploaded by: Fani Warraich

Biology QUESTION #530

Question 3

The total inside capacity of lungs of adult human beings when fully inflated is

5 ml✔️
50 ml
500 ml
5000 ml

Correct Answer Logic:

Total lung capacity is about 5-6 liters (5000 ml)

Uploaded by: Fani Warraich

Chemistry QUESTION #1101

Question 4

The correct order of wavelength of light absorbed by complexes A. [Co(NH$_3$)$_6$]$^{3+}$ B. [Co(CN)$_6$]$^{3-}$ C. [Cu(H$_2$O)$_4$]$^{2+}$ D. [Ti(H$_2$O)$_6$]$^{3+}$:

$C < D < A < B$
$C < A < D < B$✔️
$B < D < A < C$
$B < A < D < C$

Correct Answer Logic:

Wavelength $\propto 1/\Delta_o$ (crystal field splitting). Stronger field ligands → larger $\Delta_o$ → shorter wavelength absorbed. Ligand field strength: CN$^-$ $>$ NH$_3$ $>$ H$_2$O. Also Co$^{3+}$ has larger $\Delta_o$ than Cu$^{2+}$ or Ti$^{3+}$. [Co(CN)$_6$]$^{3-}$: highest $\Delta_o$ → shortest $\lambda$. [Co(NH$_3$)$_6$]$^{3+}$ $>$ [Ti(H$_2$O)$_6$]$^{3+}$ $>$ [Cu(H$_2$O)$_4$]$^{2+}$. Order of $\lambda$: C $>$ D $>$ A $>$ B, so increasing: B $<$ A $<$ D $<$ C = option (2) C$<$A$<$D$<$B is wrong. Correct: B$<$A$<$D$<$C = option (4).

Uploaded by: Fani Warraich

Physics QUESTION #1160

Question 5

The viscosity of a fluid in motion is 1 Poise. What will be its viscosity (in Poise) when the fluid is at rest?

0.5
1✔️
2

Correct Answer Logic:

Viscosity is an intrinsic property of a fluid that depends on its temperature and nature, not on its state of motion or rest. A fluid's viscosity remains the same whether it is flowing or stationary. The viscosity is still 1 Poise at rest.

Uploaded by: Fani Warraich

Library Sciences QUESTION #1558

Question 6

In Dewey Decimal Classification (DDC), the notation '020' represents which major subject division?

Philosophy and Psychology
Computer Science, Information, and General Works
Library and Information Sciences✔️
Social Sciences

Correct Answer Logic:

In DDC, the 000 class covers Computer Science, Information, and General Works. Within this class, 020 specifically represents Library and Information Sciences — the class where books about librarianship, cataloguing, and information management are classified.

Uploaded by: Fani Warraich

Physics QUESTION #4410

Question 7

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.

Uploaded by: Fani Warraich

Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3184

Question 8

'Erythropoietin' (EPO), which regulates RBC production, is primarily secreted by the:

Bone Marrow
Spleen
Kidney✔️
Liver

Correct Answer Logic:

Hypoxia (low oxygen) stimulates the kidneys to release EPO.

Uploaded by: Fani Warraich

English QUESTION #2742

Question 9

Choose the CORRECT sentence.

Each of the students have submitted their assignment.
Each of the students has submitted their assignment.✔️
Each of the students have submitted his assignment.
Each of the student has submitted their assignment.

Correct Answer Logic:

'Each' is singular and takes a singular verb. So 'has' (not 'have') is correct. The sentence should be 'Each of the students has submitted their assignment.'

Uploaded by: Fani Warraich

Agronomy QUESTION #2078

Question 10

ALS (acetolactate synthase) inhibitor herbicides, which include sulfonylureas, imidazolinones, and triazolopyrimidines, control weeds by:

Disrupting cell membrane integrity causing rapid desiccation
Inhibiting the first enzyme in branched-chain amino acid (valine, leucine, isoleucine) biosynthesis, arresting cell division in meristematic tissue — used at very low doses (grams per hectare) due to high enzyme affinity✔️
Blocking photosystem II electron transport causing photo-oxidative damage
Mimicking auxin hormones at supra-optimal concentrations causing uncontrolled growth and plant death

Correct Answer Logic:

ALS inhibitors block acetolactate synthase, preventing synthesis of branched-chain amino acids. Cell division in apical meristems ceases within days. They are active at extremely low doses (5–75 g a.i./ha for sulfonylureas) because of high target affinity. ALS mutation is the most common mechanism of herbicide resistance worldwide due to the single amino acid substitutions that confer resistance.

Uploaded by: Fani Warraich

Reading and Writing (Module-1) QUESTION #5367

Question 11

On March 23, 2021, a gust of wind wreaked havoc on global trade. Ever Given, an international shipping container vessel, became lodged in Egypt’s Suez Canal, a major shipping route between Europe and Asia. The vessel took six days to ______ it’s as heavy as two thousand blue whales when fully loaded. Which choice completes the text so that it conforms to the conventions of Standard English?

dislodge in part due to its sheer size,
dislodge, in part due to its sheer size:✔️
dislodge, in part due to its sheer size,
dislodge, in part, due to its sheer size

Correct Answer Logic:

The colon correctly introduces the explanation (the ship's weight) for why it was hard to dislodge.

Uploaded by: Fani Warraich

General Science and Ability QUESTION #248

Question 12

The chemical formula for alum is:

KAl(SO4)2⋅12H2O✔️
KSi(SO4)2⋅12H2O
KAl(SO4)2⋅8H2O
None of these

Correct Answer Logic:

Potassium alum is a double sulfate of potassium and aluminum with 12 water molecules.+2

Uploaded by: Fani Warraich

Quantitative Reasoning QUESTION #3977

Question 13

Let $a$ be a multiple of $5$ and $b = 5a$. Which of the following could be the value of $a + b$? I. $60$ II. $100$ III. $150$

I only✔️
III only
I and III only
II and III only

Correct Answer Logic:

2

Uploaded by: Fani Warraich

Mechanical Engineering QUESTION #2402

Question 14

The Reynolds number $Re$ is the ratio of inertial forces to viscous forces, defined for pipe flow as:

$Re = \mu V D / \rho$
$Re = \rho V D / \mu = V D / \nu$✔️
$Re = \rho V^2 / \mu$
$Re = \rho g D / \mu V$

Correct Answer Logic:

Reynolds number: $Re=\rho VD/\mu=VD/\nu$. For pipe flow: laminar if $Re<2300$, transitional $23004000$.

Uploaded by: Fani Warraich

MCQs Section QUESTION #4832

Question 15

Select the word nearly opposite in meaning to "DESICCATE"

Lengthen
Hallow
Exonerate
Saturate✔️

Correct Answer Logic:

Desiccate means to dry out completely or remove all moisture. Its antonym is 'saturate,' which means to soak thoroughly or fill completely with liquid.

Uploaded by: Fani Warraich

Agronomy QUESTION #2031

Question 16

The most significant agronomic advantage of including a legume crop in a rotation sequence is:

It produces allelopathic compounds that suppress all subsequent weeds
It fixes atmospheric nitrogen through symbiosis with Rhizobium bacteria, reducing nitrogen fertilizer requirement for the subsequent crop✔️
It always produces higher economic yield than cereal crops
It prevents all fungal diseases in the subsequent cereal crop

Correct Answer Logic:

Legumes host Rhizobium or Bradyrhizobium bacteria in root nodules that fix atmospheric $N_2$ into plant-available $NH_4^+$. The residual nitrogen from legume roots and residues (typically 50–200 kg N/ha depending on species) benefits the following crop, reducing synthetic N fertilizer needs.

Uploaded by: Fani Warraich

Electrical Engineering QUESTION #2193

Question 17

In a CMOS inverter with $V_{DD} = 3.3\,\text{V}$, NMOS parameters $k_n = 2\,\text{mA/V}^2$, $V_{tn} = 0.5\,\text{V}$, and PMOS parameters $k_p = 1\,\text{mA/V}^2$, $|V_{tp}| = 0.5\,\text{V}$, the switching threshold $V_M$ (where $V_{out} = V_{in}$) is approximately:

$1.26\,\text{V}$✔️
$1.65\,\text{V}$
$0.99\,\text{V}$
$2.00\,\text{V}$

Correct Answer Logic:

$V_M = \frac{V_{tn}+\sqrt{k_p/k_n}(V_{DD}-|V_{tp}|)}{1+\sqrt{k_p/k_n}} = \frac{0.5+\sqrt{0.5}(2.8)}{1+\sqrt{0.5}} = \frac{0.5+1.980}{1.707} = \frac{2.480}{1.707} \approx 1.26\,\text{V}$. The threshold is below $V_{DD}/2 = 1.65\,\text{V}$ because $k_p < k_n$.

Uploaded by: Fani Warraich

Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3132

Question 18

The 'Cerebrospinal Fluid' (CSF) is found in which space?

Epidural space
Subdural space
Subarachnoid space✔️
Intracellular space

Correct Answer Logic:

CSF flows between the arachnoid and pia mater.

Uploaded by: Fani Warraich

Urdu QUESTION #5190

Question 19

کلیم الدین احمد کی کتاب 'اردو شاعری پر ایک نظر' کی صنف کیا ہے؟

تدوین
تحقیق
تنقید✔️
ان میں سے کوئی نہیں

Correct Answer Logic:

اردو شاعری پر ایک نظر کلیم الدین احمد کی تنقیدی تصنیف ہے۔

Uploaded by: Fani Warraich

Chemistry QUESTION #1010

Question 20

Identify the homoleptic complex(es) that is/are low spin. (A) $[\text{Fe(CN)}_5\text{NO}]^{2-}$ (B) $[\text{CoF}_6]^{3-}$ (C) $[\text{Fe(CN)}_6]^{4-}$ (D) $[\text{Co(NH}_3)_6]^{3+}$ (E) $[\text{Cr(H}_2\text{O)}_6]^{2+}$

(C) only
(C) and (D) only✔️
(A) and (C) only
(B) and (E) only

Correct Answer Logic:

Homoleptic = only one type of ligand. (A) has $\text{CN}^-$ and NO — not homoleptic. (B) $[\text{CoF}_6]^{3-}$: F is weak field → high spin. (C) $[\text{Fe(CN)}_6]^{4-}$: $\text{CN}^-$ is strong field → low spin, homoleptic. (D) $[\text{Co(NH}_3)_6]^{3+}$: $\text{NH}_3$ is moderate-strong field on $\text{Co}^{3+}$ → low spin, homoleptic. So (C) and (D) are both homoleptic and low spin.

Uploaded by: Fani Warraich

More Options

Suggest a Question