1. How will you separate a mixture of common salt, sulphur powder and sand?
2. Is air a mixture or compound? Give reason.
3. Compare the properties of a true solution, a suspension and a colloidal solution.
4. Give one reason that support water is a compound not a mixture.
5. Is all mixtures are homogenous?
6. What is the particle size of a colloidal solution?
7. Give an example of non-aqueous solution.
8. What is mother liquor?
9. What is Tyndall effect? Explain with example.
10.What is Brownian motion? In which type of solution Brownian motion occurs.
11.How does the temperature and pressure affect the solubility of solid and gases in water?
12.Is hydrochloric acid is a mixture.
13.Blood and sea water are:- (a) both mixtures (b) both are compound (c) blood is a mixture whereas sea water is a compound (d) blood is a compound and sea water is a mixture
14.Sol and Gel are examples of examples of(a) Solid-solid colloids (b) Sol is a solid-liquid colloid and Gel is liquid solid colloid (c) Sol is a solid-solid colloid and Gel is a solid-liquid colloid (d) Sol is a liquid-solid colloid and Gel is a solid-liquid colloid
15.In a water-sugar solution:-(1) Water is solute and sugar is solvent (2) water is solvent and sugar is solute(3) water is solute and water is also solute (4) none of these
16.Boron and carbon:- (a) are metalloids (b) boron is metalloid and carbon is non-metal (c) boron is metallic and carbon is a metal (d) boron is non-metal and carbon is a metalloid
17.What is tyndall effect? Which kinds of solution show it?
18.Differentiate between homogeneous and heterogeneous mixture?
19.What is centrifugation? Where it is used?
20.What is a suspension? What are the properties of suspension?
21.Differentiate between mixtures and compound by giving appropriate examples?
22.Write a method to separate a mixture of salt and ammonium chloride?
23.What is crystallization? Where is it used? Why is this better than simple evaporation technique?
24. What is chromatography? What are its various applications and underline the basic principle involved?
25.A solution of H2SO4 acid is labeled is 95%. What is the mass of this that must be diluted with water to get 5L of solution containing 10g of H2SO4 per litre?
26.Which of the following solution scatter light? (a) colloidal solution (b) suspension (c) both (d) none
27.Which of the following methods would you use to separate cream from milk?(a) fractional distillation (b) distillation (c) centrifugation (d) filtration
28.Cooking of food and digestion of food:-(a) are both physical processes (b) are both chemical processes (c) cooking is physical whereas digestion is chemical (d) cooking is chemical whereas digestion physical
29.Mercury and Bromine are both (a) liquid at room temperature (b) solid at room temperature (c) gases at room temperature (d) both (a) and (b)
30.What is a mixture? What are its various types?
31.Define solute, solvent and solution?
32.What is a solution? What are the properties of solution?
33.Differentiate between elements and compounds.
34.Write a method to separate different gases from air.
35.What is a colloid? What are its various properties?
36.A solution contains 60g of NaCl in 400g of water. Calculate the concentration in term of mass by mass percentage of the solution.
37.Differentiate between metals and non metal based upon the various properties that they show.
38.What is distillation and fractional distillation? What is the basic property that separates the two methods?
39.
