General Science

EnglishUPPSC (GIC) 2010 UPPCS (Pre) 1994

Q2221.Oil spreads on water surface because

AOil is denser than water BOil is less dense than water CSurface tension of oil is more than water DSurface tension of oil is less than water

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EnglishUttarakhand Lower Sub. (Pre) 2010

Q2222.Kerosene oil floats on water because

AIts density is greater than the density of water BIts density is less than the density of water CIts density is equal to that of the density of water DNone of the above

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EnglishUPPCS (Pre) 2014, 1995

Q2223.Pressure inside a soap bubble is

AMore than atmospheric pressure BLess than atmospheric pressure CEqual to atmospheric pressure DHalf of atmospheric pressure

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EnglishRAS/RTS (Pre) 2007

Q2224.If two bubbles of soap of different diameter come in contact with a tube, then what will happen?

AThe size of both the bubbles will remain same BThe smaller bubble will become smaller and bigger will become bigger CThe smaller bubble will become larger and larger will become smaller to get the same size DBoth bubbles will burst as soon as they come in contact

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EnglishUPPCS (Pre) 2017

Q2225.The size of the Respirable Suspended Particulate Matter (R.S.P.M.) in air is

Amore than 7mm (micron) Bmore than 6mm (micron) Cmore than 5mm (micron) Dless than 5mm (micron)

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EnglishIAS (Pre) 2007

Q2226.Four wires of same material and dimensions as mentioned below are stretched by a load of same magnitude separately. Which one of them will be elongated maximum?

AWire of 1 m length and 2 mm diameter BWire of 2 m length and 2 mm diameter CWire of 3 m length and 1.5 mm diameter DWire of 1 m length and 1 mm diameter

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EnglishIAS (Pre) 1999

Q2227.For which one of the following capillarity is not the only reason?

ABlotting of ink BRising of underground water CSpread of water drop on a cotton cloth DRising of water from the roots of a plant to its foliage

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EnglishUttarakhand PCS (Pre) 2016

Q2228.With the rise of temperature, the viscosity of liquid

AIncreases BDecreases CRemains unchanged DMay increase or decrease depending on nature of liquid

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EnglishRAS/RTS (Pre) 1997

Q2229.Kerosene rises in the wick of the stove is due to

AOsmosis BDiffusion CSurface tension DBiogen contraction

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EnglishRAS/RTS (Pre) 2007

Q2230.In a capillary tube a fluid rises more as compared to water, it is due to

AFluid is more viscous than that of water BTemperature of fluid is more than that of water CSurface tension of fluid is less than that of water DSurface tension of fluid is more than that of water

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EnglishIAS (Pre) 1996

Q2231.When an air bubble at the bottom of lake rises to the top, it will

AIncreased in size BDecreased in size CMaintain its size DFlatten into a disc like shape

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EnglishUPPCS (Pre) 1992

Q2232.While travelling by plane, the ink of the pen starts to come out

ADue to decrease in air pressure BDue to increase in air pressure CDue to increase in volume of ink DDue to excessive load

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EnglishJharkhand PCS (Pre) 2003

Q2233.In automobile hydraulic brakes work on

AArchimedes Principle BNewton’s law of motion CBernoulli’s Principle DPascal’s Law

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EnglishIAS (Pre) 2001 UPPCS (Pre) 1996

Q2234.A sudden fall in barometer reading indicates that the weather will be

AStormy weather BRainy weather CCool dry weather DHot and humid weather

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EnglishUP UDA/LDA (Pre) 2013

Q2235.Which of the following is the byproduct derived from the refining process of petroleum?

APetrol BCharcoal CCoal DAsphalt

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EnglishIAS (Pre) 2011

Q2236.The surface of a lake is frozen in severe winter, but the water at its bottom is still liquid. Why? Following are some options

AIce is a bad conductor of heat BSince, the surface of the lake is at the same temperature as the air, no heat is lost CThe density of water is maximum at 4ºC DNone of the above

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EnglishUPPCS (Pre) 2005

Q2237.In cold weather, aquatic animals survive even when water at the top layer of the lake freezes into ice because

AThey can breathe in ice BThey have enough of accumulated oxygen inside them CTheir body structure is such that they can survive without oxygen DWater has the highest density at 4ºC so underneath the top layer of ice there is a layer of water

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EnglishPunjab PSC (Pre) 2017 Jharkhand PCS (Pre) 2010 UPPSC (GIC) 2010

Q2238.Fish can survive in a frozen lake because

AFish are warm blooded animals BFish hibernate in ice CWater near the bottom does not freeze DIce is a good conductor of heat

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EnglishKarnataka PSC (Pre) 2018 UPPCS (Pre) 1992

Q2239.Increasing the amount of a substance does not change its

AVolume BWeight CMass DDensity

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EnglishUPPCS (Pre) 2017 Mizoram PSC (Pre) 2019

Q2240.If an unsaturated sugar solution is prepared by mixing 100 grams of sugar with half litre of water, which of the following physical quantities will not change?

AMass BDensity CConcentration DVolume

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