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Study questions platform-wide or filter by specific tests with correct answers revealed.
Mathematics
QUESTION #4085
Question 3181
Let \(Q^+\) be the set of positive rationals with operation \(a * b = \dfrac{ab}{2}\). What is the identity element of the group \((Q^+, *)\)?
Correct Answer Logic:
For identity \(e\): \(a * e = a \Rightarrow \dfrac{ae}{2} = a \Rightarrow e = 2\). Verify: \(a * 2 = \dfrac{2a}{2} = a\) โ. The identity element is \(2\).
Uploaded by: Fani Warraich
Pakistan Affairs
QUESTION #302
Question 3182
During military rule, how did the judiciary typically respond to the regimes?
Correct Answer Logic:
Historically, the judiciary used the "Doctrine of Necessity" to validate military takeovers.+1
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General Ability and Fire Fighting
QUESTION #5625
Question 3183
A CO2 extinguisher works on electrical fires primarily because CO2 is:
Correct Answer Logic:
The cell reaction is $\frac{1}{2}H_{2} + AgCl \rightarrow Ag + H^{+} + Cl^{-}$.
$E_{cell} = E^{0}_{cell} - 0.06 \log([H^{+}][Cl^{-}])$. Since $E^{0}_{H_{2}/H^{+}} = 0$, $E^{0}_{cell} = 0.22\text{ V}$.
$0.92 = 0.22 - 0.06 \log([H^{+}]^2)$ (assuming $[H^{+}] = [Cl^{-}]$).
$0.70 = -0.12 \log[H^{+}] = 0.12 \times pH$.
$pH = 0.70 / 0.06 \approx 11.6$.
$E_{cell} = E^{0}_{cell} - 0.06 \log([H^{+}][Cl^{-}])$. Since $E^{0}_{H_{2}/H^{+}} = 0$, $E^{0}_{cell} = 0.22\text{ V}$.
$0.92 = 0.22 - 0.06 \log([H^{+}]^2)$ (assuming $[H^{+}] = [Cl^{-}]$).
$0.70 = -0.12 \log[H^{+}] = 0.12 \times pH$.
$pH = 0.70 / 0.06 \approx 11.6$.
Uploaded by: Fani Warraich
Ability / HR / Governance / Special Education
QUESTION #1901
Question 3185
Under Rule 6-A(2) before the authority passes a revision order adverse to the accused what mandatory opportunity must be provided?
Correct Answer Logic:
Rule 6-A(2) mandates that the accused must be informed in writing of grounds AND given opportunity to show cause including personal hearing if requested or otherwise necessary โ subject only to the security of Pakistan exception.
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Home Economics
QUESTION #6253
Question 3186
According to Jean Piaget, the stage where children begin to think logically about concrete events is:
Correct Answer Logic:
The Concrete Operational stage typically occurs between ages 7 and 11.
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CISA
QUESTION #1738
Question 3187
What is the primary justification for securing and protecting audit documentation and working papers throughout and after an engagement?
Correct Answer Logic:
Audit documentation inevitably contains sensitive and confidential information about the client's systems, processes, vulnerabilities, and personnel. Disclosure of this material could cause serious harm โ including enabling further attacks or exploitation. The auditor is professionally and ethically obligated to implement appropriate controls to protect the confidentiality, integrity, and availability of all audit documentation, including maintaining secure backups.
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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology)
QUESTION #3213
Question 3188
'Growth Hormone' (GH) is secreted by the:
Correct Answer Logic:
The anterior pituitary (adenohypophysis) produces GH, TSH, ACTH, etc.
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Agronomy
QUESTION #2097
Question 3189
Phosphorus cycling in agricultural soils differs fundamentally from nitrogen cycling because:
Correct Answer Logic:
Unlike N (atmospheric reservoir, gaseous transformations), P cycles in a closed soil-plant system with no atmospheric component. Soil P exists as: soil solution P (plant-available, <1 ppm), labile P (loosely sorbed), non-labile P (strongly sorbed/precipitated), and organic P. Availability is highly pH-dependent: maximum at pH 6.0โ6.5; precipitated as Ca-phosphates at high pH and Fe/Al-phosphates at low pH.
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Library Sciences
QUESTION #1565
Question 3190
Which protocol enables interoperability between different library systems by allowing one system to query the catalogues of another using a standard search interface?
Correct Answer Logic:
Z39.50 is a client-server protocol that enables one library system (client) to search and retrieve records from another system's database (server) using a standardized interface. It is fundamental to union catalogue searching, shared cataloguing, and federated search systems.
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Paper-I (Anatomy/Physiology and Biochemistry/Microbiology)
QUESTION #3488
Question 3191
'Ephedrine' is an alkaloid used primarily as a:
Correct Answer Logic:
Ephedrine is used to treat asthma and nasal congestion.
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General Knowledge
QUESTION #8684
Question 3192
What does 'portmanteau' mean?
Correct Answer Logic:
Portmanteau means a large suitcase or a blend of words.
Uploaded by: Fani Warraich
General Knowledge
QUESTION #4684
Question 3193
Andrei Sakharov is correctly described as which of the following?
Correct Answer Logic:
Andrei Sakharov was a prominent Soviet nuclear physicist and dissident who advocated for civil liberties and nuclear disarmament; he received the Nobel Peace Prize in 1975.
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General Knowledge
QUESTION #4715
Question 3194
Granting Most Favored Nation (MFN) status in trade implies which of the following?
Correct Answer Logic:
MFN status means a country will receive the same trade treatment (tariffs, quotas, preferences) as the most favorably treated trading partner, ensuring non-discrimination in trade.
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General Knowledge
QUESTION #8675
Question 3195
Through which of the following countries does the Equator pass?
Math Physics Chemistry Biology
QUESTION #811
Question 3196
Which catalyst is used to convert carboxylic acid into alcohol?
Correct Answer Logic:
\(\text{LiAlH}_4\) (lithium aluminium hydride) is a strong reducing agent that reduces carboxylic acids to primary alcohols. \(\text{NaBH}_4\) is too mild for this purpose.
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Library Sciences
QUESTION #1538
Question 3197
According to Evans et al. (2007), which principle of organizing ensures that each employee receives instructions and is accountable to only one supervisor?
Correct Answer Logic:
Unity of Command is the organizing principle that each employee should report to and receive instructions from only one supervisor. Dual reporting relationships create confusion and conflict. This principle, originating with Fayol, remains relevant in library organizational design.
Uploaded by: Fani Warraich
General Ability and Fire Fighting
QUESTION #5602
Question 3198
What does the first 'S' stand for in the P.A.S.S. technique?
Correct Answer Logic:
The first 'S' in P.A.S.S. stands for Squeeze the handle to release the extinguishing agent from the extinguisher.
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Home Economics
QUESTION #6241
Question 3199
Which method of communication is most effective for demonstrating a new skill to a large group?
Correct Answer Logic:
Method demonstrations allow learners to see the step-by-step process of a task.
Uploaded by: Fani Warraich
Chemistry
QUESTION #1435
Question 3200
In glycolysis, the enzyme hexokinase catalyzes the conversion of:
Correct Answer Logic:
Hexokinase is the first enzyme of glycolysis. It catalyzes the phosphorylation of glucose using ATP: \(\text{Glucose} + \text{ATP} \xrightarrow{\text{hexokinase}} \text{Glucose-6-phosphate} + \text{ADP}\). This irreversible step traps glucose inside the cell. Phosphofructokinase-1 catalyzes the conversion of fructose-6-phosphate to fructose-1,6-bisphosphate.
Uploaded by: Fani Warraich
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