Question 11 MarkA land breeze arises due to the differential heating between land and water surfaces.AnswertrueView full question & answer→
Question 21 MarkConvection currents occur due to differences in density in different sections of a liquid or gas.AnswertrueView full question & answer→
Question 31 MarkThe base of the bulb of the hydrometer is filled with lead so that the hydrometer can float in a horizontal position.AnswerFalse.Correct: The base of the bulb of the hydrometer is filled with lead so that the hydrometer can float in a vertical position.View full question & answer→
Question 41 MarkA body of density $3.5 g / cm ^3$will float on water.AnswerFalse.Correct: A body of density $3.5 g / cm ^3$will sink in water.View full question & answer→
Question 51 MarkOn multiplying the relative density by $1000$, one gets the density of a substance in $\ kg/m^{3}.$AnswertrueView full question & answer→
Question 61 MarkThe density of a substance is the ratio of its density to the density of water at $4^\circ C.$AnswerFalse. Correct : The relative density of a substance is the ratio of its density to the density of water at $4^\circ C.$View full question & answer→
Question 81 MarkWe need to know only the mass of the substance to determine its relative density.AnswerFalse. Correct : We need to know only the mass of the substance and mass of the same volume of water $4 ^\circ C$ to determine its relative density.View full question & answer→
Question 91 MarkThe volume of any liquid completely filled in a relative density bottle remains the same.AnswertrueView full question & answer→
Question 101 MarkThe density of gases is more than that of solids.AnswerFalse.Correct : Density of solids is more than that of solids.View full question & answer→
Question 111 MarkA Eureka can is a container with a spout near its bottom.AnswerFalse.Correct : A Eureka can is a container with a spout near its top.View full question & answer→
Question 121 MarkThe drop in the level of water in a measuring cylinder when an object is placed in it gives the volume of the object.AnswerFalse.Correct : The rise in the level of water in measuring cylinder when an object is placed in it gives the volume of the object.View full question & answer→
Question 131 MarkThe density of irregular solids can be determined with help of a Eureka can.AnswertrueView full question & answer→