Reading Mode - Questions

Row-reducing the augmented matrix leads to the condition $(a^2-14-\text{something})z=a+2-\text{something}$. The coefficient of $z$ in the last row becomes $a^2-14+\frac{14}{7}\cdot...$. After elimination: $(a^2-4)z=(a-2)$ in the last equation. For infinite solutions: coefficient and RHS both zero: $a^2-4=0\Rightarrow a=\pm2$ and $a-2=0\Rightarrow a=2$. So infinite solutions at $a=2$; no solution at $a=-2$.

Uploaded by: Fani Warraich

Others section QUESTION #4821

Question 5806

World Trade Organization (WTO) was formally established in which year?

1992
1993
1994
1995✔️

Correct Answer Logic:

The World Trade Organization (WTO) was established on January 1, 1995, replacing the General Agreement on Tariffs and Trade (GATT). It serves as the global body governing international trade rules.

Uploaded by: Fani Warraich

Commerce QUESTION #1218

Question 5807

Which of the following statements is generally correct about the reliability of audit evidence?

To be reliable, evidence should be conclusive rather than persuasive
Effective internal control system provides reliable audit evidence✔️
Evidence obtained from outside sources routed through the client
All of these

Correct Answer Logic:

An effective internal control system reduces the risk of material misstatement, making the audit evidence obtained in a well-controlled environment more reliable. Option (A) is incorrect — audit evidence is generally persuasive, not conclusive. Option (C) is incorrect — evidence from outside sources routed through the client is less reliable than direct external confirmation.

Uploaded by: Fani Warraich

Physics QUESTION #372

Question 5808

Resistance in RC circuit of time constant 2 seconds is 1000 Ohms. What is value of C in the circuit?

2 ? farad
20 ? farad
200 ? farad✔️
2000 ? farad

Correct Answer Logic:

? = RC, so C = ?/R = 2/1000 = 0.002 F = 2000 ?F. However, answer key shows C, which is 200 ?F

Uploaded by: Fani Warraich

Chemistry QUESTION #1111

Question 5809

The major product of the reaction: PhCOCH$_2$CN $\xrightarrow{\text{(i) excess CH}_3\text{MgBr, (ii) H}_3\text{O}^+}$

Ph–C(CH$_3$)(OH)–CH(OH)–CH$_3$CH$_3$✔️
Ph–CO–CH$_2$–CO–CH$_3$
Ph–C(CH$_3$)(OH)–CH$_2$–CN
Ph–C(CH$_3$)(OH)–CH$_2$–C(CH$_3$)$_2$–OH... no. Product from ketone and nitrile with excess Grignard

Correct Answer Logic:

The compound Ph–CO–CH$_2$–CN has both a ketone and nitrile group. Excess CH$_3$MgBr reacts with: (i) ketone → tertiary alcohol Ph–C(CH$_3$)(OH)–CH$_2$–CN. (ii) nitrile → imine → after H$_3$O$^+$ → ketone... with excess Grignard, the ketone from nitrile hydrolysis reacts again → Ph–C(CH$_3$)(OH)–CH$_2$–C(CH$_3$)$_2$(OH). But since the CN converts via Grignard to imine then hydrolysis gives ketone which reacts with another Grignard. Final: Ph–C(OH)(CH$_3$)–CH$_2$–C(OH)(CH$_3$)$_2$ = option (1) structure with two OH groups.

Uploaded by: Fani Warraich

English QUESTION #682

Question 5810

"Room 101" appears in which novel?

Brave New World
Fahrenheit 451
1984✔️
Darkness at Noon

Correct Answer Logic:

Room 101 is the torture chamber in the Ministry of Love where victims are subjected to their own worst fears.

Uploaded by: Fani Warraich

Professional QUESTION #1845

Question 5811

Under which section of Civil Servants Act 1973 are the Civil Servants (Appointment, Promotion and Transfer) Rules, 1973 framed?

Section 20
Section 23
Section 25✔️
Section 27

Correct Answer Logic:

Rule 1 states these rules are framed in exercise of powers conferred by Section 25 of the Civil Servants Act, 1973 (LXXI of 1973).

Uploaded by: Fani Warraich

English QUESTION #2798

Question 5812

Complete the ANALOGY — an analogy shows a relationship between pairs of words: 'Doctor : Hospital :: Teacher : ___'

Office
Library
School✔️
University

Correct Answer Logic:

This analogy shows a 'worker : workplace' relationship. A doctor works in a hospital; a teacher works in a school. The relationship is: professional person to the place where they primarily work.

Uploaded by: Fani Warraich

Civil Procedure QUESTION #3705

Question 5813

A plaintiff (State A) sues a defendant (State B) in federal court in State A. The defendant is served while on a 2-hour layover at an airport in State A. The defendant has no other contacts with State A. The defendant moves to dismiss for lack of personal jurisdiction. How should the court rule?

Grant the motion, because a 2-hour layover is not 'continuous and systematic' contact.
Deny the motion, because 'transient' presence is a valid basis for personal jurisdiction under Burnham v. Superior Court.✔️
Grant the motion, because the cause of action did not arise from the defendant's presence in the airport.
Deny the motion, but only if the defendant was traveling for business purposes.

Correct Answer Logic:

In Burnham v. Superior Court, the Supreme Court upheld the traditional 'tag' jurisdiction, where service on an individual personally present in the forum state is sufficient for personal jurisdiction, regardless of how brief the stay is.

Uploaded by: Fani Warraich

Security Measures to Maintain Law and Order QUESTION #861

Question 5814

If an officer witnesses a colleague using excessive force, their "Professional Duty" is to:

Help the colleague
Report the incident✔️
Stay silent
Resign

Correct Answer Logic:

Professional conduct and the Pakistan Army Act (applicable via 7-A) require reporting of illegal acts or misconduct.

Uploaded by: Fani Warraich

Home Economics QUESTION #6266

Question 5815

Which enzyme is responsible for the initial digestion of starch in the buccal cavity?

Trypsin
Salivary Amylase✔️
Lipase
Pepsin

Correct Answer Logic:

Salivary amylase (ptyalin) begins the chemical breakdown of complex carbohydrates into maltose.

Uploaded by: Fani Warraich

Boilers Mechanical Engineering QUESTION #4054

Question 5816

'Fluidized Bed Combustion' (FBC) allows for:

Burning water
Burning low-grade fuels and reducing $SO_x/NO_x$ emissions✔️
Very high noise
Slow combustion

Correct Answer Logic:

Fuel is suspended in a hot bed of ash and sand, ensuring excellent mixing.

Uploaded by: Fani Warraich

Paper-I (Anatomy/Physiology and Biochemistry/Microbiology) QUESTION #3424

Question 5817

The enzyme 'Amylase' found in saliva starts the digestion of:

Proteins
Fats
Carbohydrates (Starch)✔️
Vitamins

Correct Answer Logic:

It breaks starch down into smaller maltose units.

Uploaded by: Fani Warraich

Paper-II (Pharmacology and Social Behaviour, Law & Ethics and Computer Sciences) QUESTION #5762

Question 5818

Which adrenergic agonist is known for its 'Mixed Action'?

Epinephrine
Amphetamine
Ephedrine✔️
Dopamine

Correct Answer Logic:

Ephedrine acts directly on receptors and indirectly by releasing stored norepinephrine.

Uploaded by: Fani Warraich

Geography QUESTION #1237

Question 5819

Which of the following has been the oldest remote sensing programme?

NOAA
LANDSAT✔️
SPOT
None of these

Correct Answer Logic:

LANDSAT is the oldest and longest-running Earth observation satellite programme, initiated by the USA. The first LANDSAT satellite (originally called ERTS-1) was launched in 1972, making it the pioneer in civilian remote sensing programmes. NOAA satellites began later (1970s weather satellites), and SPOT (France) was launched in 1986.

Uploaded by: Fani Warraich

City and Regional Planning QUESTION #4993

Question 5820

What is the primary limitation of the Concentric Zone Model (Burgess Model)?

Ignores transportation corridors
Assumes monocentric development only✔️
Overemphasizes industrial zones
Excludes residential areas

Correct Answer Logic:

The Burgess Concentric Zone Model (1925) assumes a single central business district with zones expanding outward in concentric circles, failing to account for multiple nuclei, sector development along transport routes, or polycentric urban forms common in modern cities.

Uploaded by: Fani Warraich

More Options

Suggest a Question