MCQ 11 MarkWater expands on reducing its temperature below………..°C. (March 2019)A16✓4C8D12AnswerCorrect option: B. 44View full question & answer→
MCQ 21 Mark………..heat is needed to convert 1 g of water at 0 °C and at a pressure of one atmosphere into 1 g of steam under the same conditions.A 80 cal✓ 540 calC 89 JD 540 JAnswerCorrect option: B. 540 cal 540 calView full question & answer→
MCQ 31 Mark………..heat is needed to raise the temperature of 1 kg of water from 14.5 °C to 15.5 °C.✓ 4180 JB 103 JC 1 calD 4180 calAnswerCorrect option: A. 4180 J 4180 JView full question & answer→
MCQ 41 MarkThe density of water is maximum at………..A 0 °CB – 4 °CC 100 °C✓ 4 °CAnswerCorrect option: D. 4 °C 4 °CView full question & answer→
MCQ 51 MarkAt 4 °C, the density of water is………..A$10 g / cm ^3$B$4 g / cm ^3$C$4 \times 10^3 kg / m ^3$✓$1 \times 10^3 kg / m ^3$AnswerCorrect option: D. $1 \times 10^3 kg / m ^3$$1 \times 10^3 kg / m ^3$View full question & answer→
MCQ 61 MarkIf the temperature of water is decreased from 4 °C to 10 °C, then its………..A volume decreases and density increases✓ volume increases and density decreasesC volume decreases and density decreasesD volume increases and density increasesAnswerCorrect option: B. volume increases and density decreases volume increases and density decreasesView full question & answer→
MCQ 71 MarkThe latent heat of fusion of ice is………..A 540 cal/g✓ 80 cal/gC 800 cal/gD 4cal/gAnswerCorrect option: B. 80 cal/g 80 cal/gView full question & answer→
MCQ 81 MarkThe latent heat of vaporization of water is………..✓ 540 cal/gB 800 cal/gC 80 cal/gD 54 cal/gAnswerCorrect option: A. 540 cal/g 540 cal/gView full question & answer→
MCQ 91 MarkHeat absorbed when 1 g of ice melts at 0 °C to form 1 g of water at the same temperature is………..cal.✓80B800C540D54AnswerCorrect option: A. 8080View full question & answer→
MCQ 101 MarkIce/water is a substance that………..A expands on melting and contracts on freezingB contracts on melting and does not undergo change in volume on freezing✓ contracts on melting and expands on freezingD does not undergo any change in volume on melting or freezingAnswerCorrect option: C. contracts on melting and expands on freezing contracts on melting and expands on freezingView full question & answer→
MCQ 111 MarkThe temperature of ice can be decreased below 0 °C by mixing………..in it. A saw dustB sand✓ saltD coalAnswerCorrect option: C. salt saltView full question & answer→
MCQ 121 MarkWhen steam condenses to form water,………..A heat is absorbed and temperature increasesB heat is absorbed and temperature remains the sameC heat is given out and temperature decreases✓ heat is given out and temperature remains the sameAnswerCorrect option: D. heat is given out and temperature remains the same heat is given out and temperature remains the sameView full question & answer→
MCQ 131 MarkWhen water boils and is converted into steam, then………..✓ heat is taken in and temperature remains constantB heat is taken in and temperatures risesC heat is given out and temperature lowersD heat is given out and temperature remains constantAnswerCorrect option: A. heat is taken in and temperature remains constant heat is taken in and temperature remains constantView full question & answer→
MCQ 141 Mark……….is used to study the anomalous behaviour of water.A CalorimeterB Joule’s apparatus✓ Hope’s apparatusD Thermos flaskAnswerCorrect option: C. Hope’s apparatus Hope’s apparatusView full question & answer→
MCQ 151 MarkThe specific heat capacity of water is ______________ cal/g°CA10✓1.0C1.5D0.5AnswerCorrect option: B. 1.01.0View full question & answer→
MCQ 161 MarkIf the pressure is applied on ice, its melting point ______________✓decreasesBincreasesCremains the sameDfluctuatesAnswerCorrect option: A. decreasesdecreases View full question & answer→
MCQ 171 MarkAt dew point, the relative humidity is ______________✓100%B10%C60%D50%AnswerCorrect option: A. 100%100%View full question & answer→
MCQ 181 MarkThe specific heat capacity is measured in C.G.S. system in ______________AcalBkcal✓cal/g°CDjoule/kg°CAnswerCorrect option: C. cal/g°Ccal/g°C View full question & answer→
MCQ 191 MarkIf temperature of water is lowered from 4°C to 3°C; its volume ______________✓increasesBdecreasesCremains the sameDfluctuatesAnswerCorrect option: A. increasesincreases View full question & answer→
MCQ 201 MarkIce is such a substance which ______________Aexpands on heating✓contracts on heatingCcontracts on coolingDremains unchangedAnswerCorrect option: B. contracts on heatingcontracts on heating View full question & answer→
MCQ 211 MarkAquatic plants and animals can survive in cold region because of ______________AhumidityBdew pointCheat capacity✓Anomalous behaviour of waterAnswerCorrect option: D. Anomalous behaviour of waterAnomalous behaviour of water View full question & answer→
MCQ 221 MarkIf the humidity of air is ______________ we feel the air is humid.A60%✓more than 60%Cless than 60%D100%AnswerCorrect option: B. more than 60%more than 60% View full question & answer→
MCQ 231 MarkIf temperature of water increases from 1°C to 3°C, the density of water ______________ .Aremains the sameBdecreases✓increasesDfluctuatesAnswerCorrect option: C. increasesincreases View full question & answer→
MCQ 241 MarkThe specific heat capacity of ______________ is maximum.AMercuryBCopper✓WaterDIronAnswerCorrect option: C. Waterwater View full question & answer→