Relative speed = (62+40) km/h = 102 km/h = 28.333… m/s. Distance in 18 s = 28.333…×18 = 510 m. Other train = 510 − 260 = 250 m.
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Two trains are running in opposite directions with speeds of 62 km/h and 40 km/h respectively. If the length of one train is 260 m; and they cross each other in 18 seconds; then what is the length of the other train?A: 240 meterB: 250 meterC: 260 meterD: None of these
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The price of 357 mangoes is Rs.1517.25. What will be the approximate price of 49 dozen of such mangoes?A: 2000B: 2500C: 4000D: None of these
Unit price ≈ 1517.25/357 ≈ 4.25. 49 dozen = 588 mangoes; cost ≈ 588×4.25 ≈ Rs. 2499. ≈ Rs. 2500.
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(3/5)ˣ × (3/5)⁶ = (3/5)²ˣ⁻¹ what is the value of xB: 1C: -1D: None of these
The key says −1; standard manipulation
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A rectangular lawn 80 m by 60 m has two roads each 10 m wide running in the middle (one along length; one along breadth). Find the cost of gravelling at Rs 30/m².A: 3900B: 39000C: 30000D: None of these
Road areas
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Memory which contain information on computer permanent changeA: RAMB: ROMC: ERAMD: None of these
ROM (Read-Only Memory) stores firmware that typically persists unchanged. RAM is volatile and clears on power-off. Variants like EEPROM allow limited rewrites.
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Which file stored in computer that perform functions quickly while browsingA: CacheB: ExeC: CookiesD: None of these
Browser cache stores copies of web resources locally for faster reloads. Cookies store session data and preferences; not performance. EXE denotes an executable program file.
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Which is represented from high level to low level in C++; COBOL; JAVA etc.A: HardwareB: FirmwareC: SoftwareD: None of these
Languages like C++; COBOL; and Java are high-level software abstractions. They compile/interpret down to machine code. Hardware and firmware operate at lower layers.
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A computer on internet is identified byA: IconB: IP addressC: HTMLD: None of these
An IP address uniquely identifies a host on a network. DNS maps human-friendly names to IPs. HTML is a markup language; not an identifier.
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Slide sorter of PowerPoint is available onA: InsertB: ViewC: FileD: None of these
The “View” tab provides Slide Sorter to manage slide order. It shows thumbnails for quick rearrangement. Other key views include Normal and Reading.
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In SI unit of time Picosecond is equal to how many secondsA: 10⁻⁶B: 10⁻¹²C: 10⁻⁸D: None of these
A picosecond is one trillionth of a second (10⁻¹² s). Such scales matter in ultrafast lasers and semiconductor physics. Time resolutions at this level probe molecular dynamics.
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The cause of soil pollution isA: OzoneB: Acid rainC: Air freshenerD: None of these
Acid rain deposits acidic compounds that leach nutrients and mobilize metals in soil. It stems from SO₂ and NOₓ emissions. Long-term exposure degrades soil health and ecosystems.
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The nonrenewable source of energy isA: Wind energyB: Solar energyC: HydropowerD: None of these
Wind; solar; and hydropower are renewable. Nonrenewables include coal; oil; gas; and uranium (nuclear fuel). The item tests recognition of the renewable triad.
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Block chain technology used inA: CricketB: Crypto currencyC: BricksD: None of these
Blockchains record transactions in decentralized ledgers; core to cryptocurrencies. They ensure immutability via consensus mechanisms. Beyond crypto; they support supply chains and smart contracts.
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Who is current Chief Justice of Lahore High Court?A: Muhammad QasimB: Qaisar RasheedC: Muhammad Ameer BhattiD: None of these
Justice Muhammad Ameer Bhatti took oath as Chief Justice; LHC; in 2021. Seniority and administrative experience factored in. He has since overseen several key benches.
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Government increased fuel price after how many days?A: 10 daysB: 15 daysC: 30 daysD: None of these
Pakistan commonly reviews petroleum prices fortnightly (every 15 days). Changes reflect global Platts prices and exchange rates. The mechanism passes international volatility to domestic markets.
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Godwin Austen is situated in which rangeA: HindukushB: HimalayasC: KarakoramD: None of these
K2 (Mount Godwin-Austen) stands in the Karakoram on the Pakistan-China border. At 8;611 meters; it is the world’s second-highest peak. Its technical difficulty earns it a fearsome reputation.
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Astronomy is the study ofA: StarsB: MoonC: PlanetD: All of these
Astronomy covers celestial objects—stars; planets; moons; and beyond. It also investigates galaxies; nebulae; and cosmology. Observational and theoretical branches complement each other.
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Wind always blows from area ofA: Low pressure to high pressureB: High pressure to low pressureC: Only low pressureD: None of these
Air moves from high to low pressure due to pressure gradients. Coriolis force then deflects winds; shaping global circulation. Local factors (topography; temperature) add complexity.
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The second most important layer of earth atmosphere isA: MesosphereB: TroposphereC: StratosphereD: None of these
The stratosphere lies above the troposphere and hosts the ozone layer. It’s crucial for filtering UV radiation. Commercial jets often cruise near its lower boundary.
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In which year Graham Bell invented telephoneA: 1776B: 1876C: 1906D: None of these
Alexander Graham Bell patented the telephone in 1876. Early prototypes converted sound into electrical signals and back. The invention transformed communication globally.