Is Matter Aroun...

Tincture of iodine has antiseptic properties. This solution is made by dissolving:

Which of the following is the seperation technique to seperate mercury and water?

The number of phases present in a true solution is:

Which one of the following is not a solution?

Which of the following are homogeneous in nature?
(i) Ice (ii) Wood (iii) Soil (iv) Air

Salt can be recovered from its solution by evaporation. Another technique which can be used for the separation of a salt from its solution is :

A mixture of chloroform and water taken in a separating funnel is mixed and left undisturbed for some time. The upper layer in the separating funnel will be:

The teacher instructed three students A, B and C respectively to prepare a 50% (mass by volume) solution of sodium hydroxide ($$NaOH$$). A dissolved 50g of $$NaOH$$ in 100 ml of water, B dissolved 50g of $$NaOH$$ in 100g of water while C dissolved 50g of $$NaOH$$ in water to make 100 ml of solution. Which one of them has made the desired solution?

What would you observe when an aqueous sugar solution is heated to dryness?

Which of the following is a seperation technique to seperate potassium chloride and ammonium chloride?