ATOMIC STRUCTURE
Quiz by naresh
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11 questions
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- Q1Which 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(i) and (iv)(iii) and (iv)(i) and (ii)(ii) and (iv)60s
- Q2In phosphoric acid ,the valency of phosphate radical is-2-3+3+160s
- Q3If two liquids have same boiling point and are completely soluble in each other. Which method would you use to separate them?using separating funnelfractional distillationchromatographyfiltration60s
- Q4Fractional distillation can be used to separate alcohol and water. This method of separation uses the fact that alcohol and waterboils at different temperaturesburn at different temperaturescontain different sized moleculescontain different pigments60s
- Q5Which of the following is true about a charged atomcation is negatively chargedanion has lost an electroncation has gained an electronanion is negatively charged60s
- Q6An ideal method to separate water and chloroform issublimationsublimationseparating funneldistillation60s
- 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,oilwater,air,windoxygen,water,sugarsalt juice,air60s
- Q8choose the correct statement from the followingconversion of solid state to liquid state on heating is called vapourisationconversion of vapour state to liquid state on cooling is called liquefactionconversion of solid state into liquid state is called sublimationconversion of liquid state to vapour state on heating is called liquefaction60s
- Q9Variable valencies are used to indicate ionall of the abovegreater than +1with more than 1 valencygreater than -160s
- Q10Which one among the following most correctly determines the atomic number of an element?Number of ionsNumber of protons and electronsNumber of protonsNumber of nucleons60s
- Q11Select the chemical formula of litharge from the followingPbONaClNaOHKOH60s