MCQ 11 MarkChoose the most appropriate answer Which of the gas is highly soluble in water ?✓Ammonia BNitrogen CCarbon monoxide DOxygen AnswerCorrect option: A. Ammonia View full question & answer→
MCQ 21 MarkChoose the most appropriate answer : A solvent of Iodine isAWaterBKerosene oil✓Alcohol DPetrol AnswerCorrect option: C. Alcohol View full question & answer→
MCQ 31 MarkChoose the most appropriate answer Which of the following property is not shown by compounds?✓They are heterogeneous. BThey are homogeneousCThey have definite molecular formulae. DThey have fixed melting and boiling points AnswerCorrect option: A. They are heterogeneous. View full question & answer→
MCQ 41 MarkChoose the most appropriate answer $A$ pair of metalloids areA$Na$ and $Mg$✓$B$ and $ Si$C$C$ and $P $D$He$ and $A$AnswerCorrect option: B. $B$ and $ Si$View full question & answer→
MCQ 51 MarkChoose the most appropriate answer: A mixture of sand and ammonium chloride can be separated byAfiltrationBdistillation ✓sublimation Dcrystallisation AnswerCorrect option: C. sublimation View full question & answer→
MCQ 61 MarkThe different constituents of an ink are separated byAhandpicking✓paper chromatographyCfiltrationDmagnetic separation.AnswerCorrect option: B. paper chromatographyView full question & answer→
MCQ 71 MarkFractional distillation is used to separate liquids having an appreciable difference in theirAsize and shapeBsolubility✓boiling pointsDnone of theseAnswerCorrect option: C. boiling pointsView full question & answer→
MCQ 81 MarkLoading is a process in which✓impurities become heavy and sink to the bottom.Bimpurities float on the top.Cimpurities vaporizeDnone of theseAnswerCorrect option: A. impurities become heavy and sink to the bottom.View full question & answer→
MCQ 91 MarkDuring filtration the substance left behind on the filter paper is calledAdistillateBfiltrateCsublimate✓residueAnswerCorrect option: D. residueView full question & answer→
MCQ 101 MarkWinnowing is the method used to separate✓chaff from grain.Bstones from riceCoil from waterDsalt from sandAnswerCorrect option: A. chaff from grain.View full question & answer→
MCQ 111 MarkThe methods of separating components of a given mixture are based on the✓physical properties and state of the components.Bcolour of the components only.Cstate of the components.Dnone of these.AnswerCorrect option: A. physical properties and state of the components.View full question & answer→
MCQ 121 MarkSolutions areAheterogeneous mixtures.Bcompounds✓homogeneous mixtures.Delements.AnswerCorrect option: C. homogeneous mixtures.View full question & answer→
MCQ 131 MarkThe constituents of a mixture are present inAa fixed ratio✓a variable ratio,Cthe ratio of $2: 1$Dnone of theseAnswerCorrect option: B. a variable ratio,View full question & answer→