. From the following techniques: Distillation, filtration, fractional distillation, chromatography, crystallisation, sublimation, evaporation, decantation, sedimentation. Select the method you will use to separate : the constituents of the colouring matter of ink.

. From the following techniques: Distillation, filtration, fractional distillation, chromatography, crystallisation, sublimation, evaporation, decantation, sedimentation. Select the method you will use to separate : Petrol from crude oil.

. From the following techniques: Distillation, filtration, fractional distillation, chromatography, crystallisation, sublimation, evaporation, decantation, sedimentation. Select the method you will use to separate : Common salt from sea-water.

. From the following techniques: Distillation, filtration, fractional distillation, chromatography, crystallisation, sublimation, evaporation, decantation, sedimentation. Select the method you will use to separate : hydratedCuS04from its aqueous solution.

From the methods (or techniques) of distillation, filtration, fractional distillation, chromatography, crystallisation, select and write down the technique you would use to separate :Constituents of colouring matter in ink.

From the methods (or techniques) of distillation, filtration, fractional distillation, chromatography, crystallisation, select and write down the technique you would use to separate : Nitrogen from liquid air.

From the methods (or techniques) of distillation, filtration, fractional distillation, chromatography, crystallisation, select and write down the technique you would use to separate : Unused zinc after the reaction of excess of zinc with dilute sulphuric acid.

From the methods (or techniques) of distillation, filtration, fractional distillation, chromatography, crystallisation, select and write down the technique you would use to separate : Hydrated copper (II) sulphate or blue vitriol from its aqueous solution.

What is paper chromatography ? How will you separate the coloured constituents present in a mixture of ink and water ?

In these question, a statement of asertion followed by a statement of reason is given .Choose the correct answer out of the following choices: Assertion and reason both are correct statements and reason is correct explanation for assertion. Assertion and reason both are correct statements but reason is not correct explanation for assertion. Assertion is correct statement but reason is wrong statement. Assertion is wrong statement but reason is correct statement. Assertion:A famous painting ws painted by not using brush strokes in the usual manner,but rather a myrian of small colour dots.In this painting ,the colour you see at any given place on the painting changes as you move away. Reason:The angular separation of adjacent dots changes with the distance from the painting.

These questions consist of two statements each,printed as Assertion and Reason.While answering these questions you are required to chose any one of the following four responses. If both Assertion and Reason are true and Reason in correct explanation of Assertion. If both assertion and Reason are true but reason is not correct explanation of Assertion. If Assertion is true but Reason is false. If both Assertion and Reason are false. Assertion:Proximal convoluted tubule is lined by brush-bordered cuboidal epitheliium. Reason:PCT is main site of selective reabsorption of useful materials from nephric filtrate.