Atomic Structure &
Quiz by Madhavi Malkar
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15 questions
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- Q11. Which of the following statements about Dalton’s atomic theory are correct ? (i) Atoms are destructible and divisible . (ii)Atoms are indestructible ,indivisible and the smallest particle of an element. (iii)Atoms of the same element may not be alike . (iv)Atoms of the same element are alike in all respect.(ii) and (iv)(i) and (ii)(i) and (iv)(iii) and (iv)45s
- Q2In phosphoric acid ,the valency of phosphate radical is+3+1-3-230s
- Q3If two liquids have same boiling point and are completely soluble in each other. Which method would you use to separate them?chromatographyfractional distillationseparating funnelfiltration30s
- Q4Fractional distillation can be used to separate alcohol and water. This method of separation uses the fact that alcohol and waterboils at different temperaturescontain different pigmentscontain different sized moleculesburn at different temperatures45s
- Q5Which of the following is true about a charged atomcation has gained an electronanion is negatively chargedanion has lost an electroncation is negatively charged45s
- Q6An ideal method to separate water and chloroform issublimationseparating funneldistillationfractional distillation45s
- Q7A few substances are arranged in the increasing order of their force of attraction between their particles.which one of the following represents the correct arrangement ?air,sugar,oilsalt juice,airoxygen,water,sugarwater,air,wind45s
- Q8Choose the correct statement from the following:conversion of liquid state to vapor state on heating is called liquefaction.conversion of solid state into liquid state is called sublimation.conversion of vapor state to liquid state on cooling is called liquefaction.conversion of solid state to liquid state on heating is called vaporization45s
- Q9Variable valencies are used to indicate iongreater than -1with more than 1 valencygreater than +1all of the above45s
- Q10Which one among the following most correctly determines the atomic number of an element?Number of nucleonsNumber of protons and electronsNumber of ionsNumber of protons45s
- Q11A radical with one atom of Sulphur and three atoms of oxygen isBisulphiteSulphitehydroxideSulphate45s
- Q12A metal which is found in liquid state at room temperaturemercurypotassiumsodiumaluminium45s
- Q13The most abundant element in the atmosphereargoncarbon dioxidenitrogenoxygen45s
- Q14which of the following has minimum inter molecular space?GasesNone of the aboveLiquidsSolids45s
- Q15Select the chemical formula of litharge from the following :PbOKOHNaClNaOH45s