• If x = 3 + √8; find x² + 1/x².
    A: 32
    B: 34
    C: 36
    D: None of these

    Given x = 3 + √8; find 1/x

  • He suggested that; we should be bound by a code of conduct; ______?
    A: are we not
    B: aren’t we
    C: Shouldn’t we
    D: None of these

    The tag question for “we should be” is “shouldn’t we”; this question tests grammar knowledge. The suggestion uses “should”; requiring a matching tag. Options A and B use incorrect verbs; “shouldn’t we” aligns with the modal verb. Understanding tag questions ensures grammatical accuracy; this is vital for exams or English discussions; correct tags clarify speaker intent; knowing rules aids in precise communication; accurate usage enhances professional or academic writing about conduct or agreements.

  • He may be slow ______ understanding.
    A: to
    B: with
    C: at
    D: None of these

    Slow at understanding is the correct phrase; this question tests preposition usage. “At” is used with skills or abilities; “to” and “with” don’t fit. Understanding prepositions ensures grammatical precision; this is vital for exams or English discussions; correct usage clarifies descriptions; knowing prepositions aids in accurate expression; accurate knowledge enhances professional or academic writing about abilities or comprehension.

  • ______ is volatile memory.
    A: Volatile
    B: Permanent
    C: Primary Memory
    D: All of these

    Primary memory (RAM) is volatile; this question tests hardware knowledge. It loses data without power; permanent memory (ROM) retains it; volatile is not a type. Understanding memory enhances technical awareness; this is vital for exams or discussions on computing; RAM supports fast processing; knowing types aids in hardware analysis; accurate knowledge ensures clarity in conversations about computer performance or technology.

  • What can you paste using Paste Special in MS Word?
    A: Functions
    B: Formulas
    C: Formats
    D: All of these

    Paste Special allows pasting formats; values; or formulas; this question tests software knowledge. It offers advanced pasting options in Word; all apply in contexts like Excel too. Understanding features enhances computing skills; this is vital for exams or discussions on software; Paste Special boosts efficiency; knowing options aids in technical analysis; accurate knowledge ensures clarity in conversations about document editing or software functionality.

  • The language computers execute is
    A: Assembly
    B: Machine Language
    C: PHP
    D: None of these

    Machine language is directly executed by computers; this question tests programming knowledge. Assembly is human-readable; PHP is high-level; neither is directly executed. Understanding languages enhances technical awareness; this is vital for exams or discussions on computing; machine language is binary; knowing types aids in programming analysis; accurate knowledge ensures clarity in conversations about computer operations or coding.

  • The average of 50 numbers is 30; if 35 and 25 are removed; what’s the new average?
    A: 30
    B: 34
    C: 32
    D: None of these

    To find the new average; calculate the total sum

  • A sum doubles in 3 years at compound interest; when will it quadruple?
    A: 4
    B: 5
    C: 6
    D: None of these

    For compound interest; if a sum doubles in 3 years; it becomes 2P. To quadruple (4P); use the formula P(1 + r)^t = 4P. Since 2P = P(1 + r)^3; then (1 + r)^3 = 2. For quadrupling

  • If 60 women spin 48 kg of cotton in 8 hours daily; how much will 30 women spin in 12 hours?
    A: 24 kg
    B: 30 kg
    C: 36 kg
    D: None of these

    Calculate work rate

  • Which is a single-user system?
    A: MAC
    B: Windows
    C: Linux
    D: None of these

    MAC (macOS) is primarily single-user; this question tests system knowledge. Windows and Linux support multi-users; macOS focuses on individual use. Understanding systems enhances technical awareness; this is vital for exams or discussions on computing; macOS suits personal devices; knowing differences aids in system analysis; accurate knowledge ensures clarity in conversations about operating systems or computer functionality.

  • To give an object a negative charge; we must
    A: Remove some proton
    B: Add some atoms
    C: Add some electrons
    D: None of these

    Adding electrons creates a negative charge; this question tests physics knowledge. Protons are positive; atoms are neutral; electrons carry negative charge. Understanding charge enhances scientific awareness; this is vital for exams or discussions on physics; charge manipulation is key in electronics; knowing processes aids in scientific analysis; accurate knowledge ensures clarity in conversations about electricity or physics principles.

  • An object’s weight at Earth’s center is
    A: Zero
    B: Weightless
    C: Raise a little
    D: None of these

    An object is weightless at Earth’s center; this question tests physics knowledge. Gravity cancels out; zero is less precise; raise is incorrect. Understanding gravity enhances scientific awareness; this is vital for exams or discussions on physics; weightlessness occurs at the core; knowing concepts aids in scientific analysis; accurate knowledge ensures clarity in conversations about gravity or planetary science.

  • The least polluted gas is
    A: Carbon
    B: Nitrogen
    C: Chlorine
    D: None of these

    Nitrogen is the least polluting gas; this question tests environmental knowledge. It’s abundant and inert; carbon and chlorine are more reactive or harmful. Understanding gases enhances ecological awareness; this is vital for exams or discussions on pollution; nitrogen’s role is neutral in air; knowing properties aids in environmental analysis; accurate knowledge ensures clarity in conversations about air quality or chemistry.

  • Which key scrolls one page down in MS Word?
    A: Pg-Dn
    B: Up Arrow
    C: Down Arrow
    D: None of these

    Pg-Dn (Page Down) scrolls one page in MS Word; this question tests software knowledge. Up and Down Arrows move the cursor; not pages. Understanding shortcuts enhances computing efficiency; this is vital for exams or discussions on software use; Pg-Dn improves navigation; knowing keys aids in productivity analysis; accurate knowledge ensures clarity in conversations about document editing or computer skills.

  • How do you identify a cell in a spreadsheet?
    A: Address
    B: Values
    C: Formula
    D: All of these

    Cells are identified by address; values; or formulas; this question tests spreadsheet knowledge. Address (e.g.; A1) locates; values show data; formulas define calculations. Understanding spreadsheets enhances computing skills; this is vital for exams or discussions on data management; cells are core to Excel; knowing components aids in technical analysis; accurate knowledge ensures clarity in conversations about software functionality or data processing.

  • Which is not application software?
    A: MS Windows
    B: MS Excel
    C: MS Word
    D: None of these

    MS Windows is an operating system; not application software; this question tests software classification. Excel and Word are applications; Windows runs them. Understanding software types enhances technical knowledge; this is vital for exams or discussions on computing; operating systems manage hardware; knowing distinctions aids in technical analysis; accurate knowledge ensures clarity in conversations about software roles or computer systems.

  • Which pass is called the “Roof of the World”?
    A: Khunjerab Pass
    B: Shandur Pass
    C: Karakoram Pass
    D: None of these

    Karakoram Pass is known as the “Roof of the World”; this question tests geographical knowledge. It’s among the highest passes; Khunjerab and Shandur are lower. Understanding passes enhances topographical awareness; this is vital for exams or discussions on geography; the pass links Asia; knowing names aids in regional analysis; accurate knowledge ensures clarity in conversations about high-altitude routes or geography.

  • What percentage of the world’s area is forest-covered?
    A: 25%
    B: 26%
    C: 28%
    D: None of these

    About 31% of the world’s land is forested; not listed; this question tests environmental knowledge. 25–28% are underestimates. Understanding forest cover enhances ecological awareness; this is vital for exams or discussions on sustainability; forests impact climate; knowing percentages aids in environmental analysis; accurate knowledge ensures clarity in conversations about global ecosystems or conservation.

  • Pakistan’s longest river is
    A: Ravi
    B: Sutlej
    C: Chenab
    D: None of these

    The Indus is Pakistan’s longest river; not listed; this question tests geographical knowledge. Ravi; Sutlej; and Chenab are shorter. Understanding rivers enhances topographical awareness; this is vital for exams or discussions on Pakistan’s geography; the Indus supports agriculture; knowing rivers aids in resource analysis; accurate knowledge ensures clarity in conversations about Pakistan’s waterways or irrigation.

  • The gas known as “Laughing gas” is
    A: Carbon dioxide
    B: Methane
    C: Nitrous Oxide
    D: None of these

    Nitrous oxide is laughing gas; listed but marked incorrect; this question tests scientific knowledge. Used in anesthesia; it causes euphoria; carbon dioxide and methane don’t. Understanding gases enhances scientific awareness; this is vital for exams or discussions on chemistry; nitrous oxide has medical uses; knowing names aids in scientific analysis; accurate knowledge ensures clarity in conversations about medical science or chemistry. Note