Tiêu đề 02. SOLUTIONS.pdf ✅

(1.) Most of the process in our body occurs in?[Page: 35] (a) Solid solution (b) Liquid solution (c) Gaseous solution (d) Colloid solution (2.) Which of the following mixture is (are) called Solution? [Page: 36] (i) H O NH 2 3 + (iii) H O2 + Acetone (ii) Acetone + Alcohol (iv) Hexane + Water (a) (i), (ii) and (iii) (b) (i), (iii) and (iv) (c) (i), (iv) (d) (ii) and (iii) (3.) Which of the following is a quantitative description of the solution? [Page: 36] (a) Dilute (b) Concentrated (c) Saturated (d) Molar (4.) Which of the following fluoride is used as a ' rat poison’ ? [Page: 35] (a) CaF2 (b) KF (c) NaP (d) MgF2 (5.) The importance in life depends on composition? Which one of the following statement justify above fact? [Page: 35] (a) 1 ppm fluoride ions in water prevents tooth decay. (b) 1.5 ppm of fluoride ions causes tooth decay. (c) Concentration above 1.5 ppm can be poisonous. (d) All of the above. (6.) When a solute is present in trace quantities which of the following expression is used? [Page: 36] (a) Gram per million (b) Milligram percent (c) Microgram percent (d) Parts per millions (7.) Matrix match. [NCERT Exemplar, Page: 36] Column 1 Column 2
(a.) Soda water (p) A solution of gas in solid (b.) Sugar solution (q) A solution of gas in gas (c.) German silver (r) A solution of solid in liquid (d.) Air (s) A solution of solid in solid (e) Hydrogen gas in palladium (r) A solution of gas in liquid (u) A solution of liquid in solid (a) A T,B U,C S,D Q,E P → → → → → (b) A T,B R,C S,D Q,E P → → → → → (c) A P,B Q,C R,D S,E T → → → → → (d) A P,B Q,C R,D S,E U → → → → → (8.) Matrix match. [Page: 36] Column 1 Column 2 (a.) Chloroform mixed with nitrogen gas (p) Gaseous solution (b.) Ethanol dissolved in water (q) Solid solution (c.) Amalgam of mercury with sodium (r) Liquid solution (a) A P,B Q,C R → → → (b) A P,B R,C Q → → → (c) A Q,B P,C R → → → (d) A Q,B R,C P → → → (9.) Matrix match. [QR Code, NCERT Exemplar, Page: 36] Column 1 Column 2

(14.) Which of the following is dependent on temperature? [NEET‐2017, Page: 38] (a) Molarity (b) mole fraction (c) weight percent (d) molality (15.) How many grams of Conc.HNO3 solution should be used to prepare 250 ml of 3 2.0MHNO ? The conc.acid is 3 70 % HNO ? [Page: 37] (a) 3 70 g conc.HNO (b) 3 54 g conc.HNO (c) 3 45 g conc.HNO (d) 3 90 g conc.HNO (16.) What is the molarity of H SO 2 4 solution that has density 1.84g / cc at 35 C and contains 98% by weight? [Page: 39] (a) 18.4 M (b) 18 M (c) 4.18 M (d) 8.14 M (17.) The mole fraction of the solute in one molal aqueous solution is [Page: 37] (a) 0.009 (b) 0.018 (c) 0.027 (d) 0.036 (18.) How many grams of CH OH 3 should be added to water to prepare 150 ml solution of 3 2MCH OH [Page: 38] (a) 3 9.6 10  (b) 3 2.4 10  (c) 9.6 (d) 2.4 (19.) The concentration unit, independent of temperature would be Page: 37] (a) Normality (b) Weight volume percent (c) Molality (d) Molarity (20.) The molarity of pure H O2 is? (a) 50M (b) 18M (c) 55.6M (d) 100M