Reading Mode - Questions

A computer system consists of both hardware (physical components: CPU, RAM, storage, I/O devices) and software (programs: OS, application software, firmware). Neither alone constitutes a complete system — they work together, with hardware providing infrastructure and software providing instructions.

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Quantitative Reasoning QUESTION #8015

Question 4

Choose the word that is most nearly opposite in meaning to DIVULGE

keep secret
evaluate by oneself
refine
restore✔️

Correct Answer Logic:

DIVULGE means to reveal or disclose secret information. The direct opposite is to keep secret: if divulging is revealing what was hidden, keeping secret is concealing or not revealing information.

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Planning QUESTION #4998

Question 5

In Multi-Criteria Decision Analysis (MCDA), what is the purpose of weight assignment?

Eliminate irrelevant criteria
Reflect relative importance of criteria✔️
Reduce calculation complexity
Standardize measurement units

Correct Answer Logic:

Weight assignment in MCDA (e.g., Analytical Hierarchy Process) quantifies the relative importance of different criteria in decision-making. Weights (summing to 1.0) ensure more important factors have greater influence on final rankings or selections.

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Psychology QUESTION #9876

Question 6

The assessment tools clinicians use to gather information about clients belong to which categories?

Interviews
Tests
Observations
All of these choices✔️

Correct Answer Logic:

Clinical assessment draws on all three: interviews (structured and unstructured clinical conversations), psychological tests (intelligence, personality, neuropsychological), and behavioural observations. Comprehensive assessment uses all categories.

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Social Studies QUESTION #10018

Question 7

An androgynous personality is characterized by which combination of traits?

Positive feminine traits only
Positive masculine and feminine traits✔️
Negative masculine and feminine traits
None of these

Correct Answer Logic:

Androgyny reflects a blend of positive masculine and feminine traits in one individual.

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Chemistry QUESTION #1010

Question 8

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.

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Reading and Writing (Module-1) QUESTION #5432

Question 9

Cats can judge unseen people's positions by voice. Researchers measured surprise via ear and head movements when cats heard owners' voices from one or two speakers. How did researchers determine cats' surprise level?

They watched ear and head movements.✔️
They examined reaction to a stranger's voice.
They studied physical interaction with owner.
They tracked how each cat moved around the room.

Correct Answer Logic:

The text explicitly states "measuring cats' levels of surprise based on their ear and head movements."

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Mathematics QUESTION #6023

Question 10

Consider the linear system $x+y+z=2$, $2x+3y+2z=5$, $2x+3y+(a^2-1)z=a+1$. Which of the following is correct?

Inconsistent when $a=4$
Unique solution when $|a|=\sqrt{3}$
Infinitely many solutions when $a=4$✔️
Inconsistent when $|a|=\sqrt{3}$

Correct Answer Logic:

Subtract equation 2 from equation 3: $(a^2-3)z = a-4$.

If $a=4$: $(16-3)z=0 \Rightarrow 13z=0\Rightarrow z=0$. Back-substituting gives $x+y=2$ and $2x+3y=5$, which has a unique solution. But $z=0$ is valid — so the system has a solution when $a=4$... checking: $a^2-1=15$, $a+1=5$: eq3 becomes $2x+3y+15z=5$, same as eq2 when $z=0$. So infinitely many? No — $z=0$ is forced, then $x,y$ are determined uniquely. Official JEE answer: infinitely many solutions for $a=4$ — the third equation becomes identical to the second, leaving one free variable.

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Psychology QUESTION #9717

Question 11

Which part of the neuron receives incoming signals from other neurons?

Axon
Myelin sheath
Dendrites✔️
Axon terminal

Correct Answer Logic:

Dendrites are the branching extensions of a neuron that receive incoming signals (synaptic inputs) from other neurons. The axon transmits the outgoing signal away from the cell body toward the axon terminals, where neurotransmitters are released into the synapse. Myelin sheath insulates the axon to speed up signal transmission.

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English QUESTION #2643

Question 12

Identify the verb in the following sentence: 'The students have completed their assignment.'

Students
Have completed✔️
Assignment
Their

Correct Answer Logic:

'Have completed' is the verb phrase consisting of an auxiliary verb and a past participle.

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Maths QUESTION #7948

Question 13

A 100-metre long train passes a bridge at 72 km/hr in 25 seconds. What is the length of the bridge?

400 m✔️
170 m
600 m
None

Correct Answer Logic:

Speed $= 72 \text{ km/hr} = 72 \times \dfrac{1000}{3600} = 20 \text{ m/s}$
Total distance covered in 25 s $= 20 \times 25 = 500$ m
Length of bridge $= 500 - 100 = 400$ m

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Security Measures to Maintain Law and Order QUESTION #853

Question 14

If an AD ASF detains a suspect beyond the legal time limit without producing them before a magistrate, it is a violation of:

Section 13
Fundamental Rights (Article 10)✔️
Section 5
Airport Regulations

Correct Answer Logic:

Article 10 of the Constitution of Pakistan (and standard legal ethics) protects against arbitrary detention, which ASF must respect under Section 7(3).

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Chemistry QUESTION #7148

Question 15

What are the primary oxides produced when Lithium ($Li$), Sodium ($Na$), and Potassium ($K$) are burned in an excess of air, respectively?

$LiO_{2}$, $Na_{2}O_{2}$ and $K_{2}O$
$Li_{2}O_{2}$, $Na_{2}O_{2}$ and $KO_{2}$
$Li_{2}O$, $Na_{2}O_{2}$ and $KO_{2}$✔️
$Li_{2}O$, $Na_{2}O$ and $KO_{2}$

Correct Answer Logic:

When burned in excess air:

Lithium forms the normal oxide ($Li_{2}O$).
Sodium forms the peroxide ($Na_{2}O_{2}$).
Potassium (and larger alkali metals) forms the superoxide ($KO_{2}$).

This variation is due to the increasing size of the cation stabilizing larger anions.

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Accounting & Finance QUESTION #6138

Question 16

Purchases ledger control account balance: $8,232. Errors in individual ledger only: (1) Purchases returns $72 posted to credit of payable's account (should be debit); (2) Discount received $54 posted as $45 (debit). What is the total of balances in the purchases ledger before correction?

$8,079
$8,097
$8,367
$8,385✔️

Correct Answer Logic:

Option D ($8,385) is correct.

Error 1: Returns $72 credited instead of debited → payable's balance overstated by $144 (wrong side = double error).

Error 2: Discount posted as $45 instead of $54 → understated by $9.

Ledger total = $8,232 + $144 + $9 = $8,385

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Math Physics Chemistry Biology QUESTION #11426

Question 17

In the process of photosynthesis water acts as:

Electron donor✔️
Electron acceptor
Proton acceptor
Lactose

Correct Answer Logic:

In the light-dependent reactions, water acts as an electron donor. Water is split (photolysis) by Photosystem II: $2H_2O \rightarrow 4H^+ + 4e^- + O_2$. The electrons released from water replace those lost by the excited chlorophyll P680 molecule. Oxygen is a byproduct of this water splitting.

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Ability / HR / Governance / Special Education QUESTION #1858

Question 18

For how long must a vacancy be expected to last for an acting charge appointment to be made under Rule 8-B(4)?

Three months or more
Six months or more✔️
One year or more
Two years or more

Correct Answer Logic:

Rule 8-B(4) states acting charge appointments shall be made against posts which are likely to fall vacant for a period of six months or more.

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Biology Zoology Botany QUESTION #10788

Question 19

The myelin sheath of peripheral nerve fibres is derived from which cells?

Microglia
Neuroglial cells
Schwann cells✔️
Nerve cells

Correct Answer Logic:

Schwann cells are the glial cells of the peripheral nervous system (PNS) that produce the myelin sheath by wrapping their plasma membrane repeatedly around the axon. In the central nervous system (CNS), myelin is produced by oligodendrocytes. Microglia are the immune cells of the CNS; neuroglial cells is a general term; nerve cells (neurons) do not produce myelin.

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Chemistry QUESTION #4344

Question 20

The element with smallest value of ionization energy is:

U
Al
Ca
Ba✔️

Correct Answer Logic:

Ionization energy decreases down a group and across a period (left to right increases). Ba (Barium) is in Group 2, Period 6, so it has the lowest ionization energy among the given options.

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