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1) When common salt is dissolved in water ? a. Boiling point of water decrease b. Boiling point of water increase c. Boiling point of water remains same d. None of the above
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2) Homogeneous mixture of two or more than two compounds is called__________________? a. solution b. compound c. radical d. ion
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3) Solution with maximum concentration of solute at given temperature is called________________? a. Super saturated solution b. unsaturated solution c. saturated solution d. dilute solution
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4) Number of moles in 1 kg of solvent is called_________________? a. normality b. molarity c. molality d. mole fraction
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5) In partially miscible liquids the two layers are___________________? a. saturated solutions of each liquid b. unsaturated solutions of each liquid c. normal solution of each liquid d. no layer formation takes place
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6) The relative lowering of vapour pressure is_____________________? a. equal to the mole fraction of solvent b. equal to the mole fraction of solute c. directly proportional to the mole fraction of solute d. both B & C
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7) Mixtures which distill over without change in composition called___________________? a. zeotropic mixture b. azeotropic mixture c. amphoteric mixture d. ideal solution
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8) Solubility of KCIO3 gives__________________? a. continuous and falling solubility curve b. discontinuous and falling solubility curve c. continuous and rising solubility curve d. discontinuous and rising solubility curve
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9) Boiling point elevations can be measured by__________________? a. Beckmanns method b. Landsbergers method c. Linds method d. none of the above
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10) The compounds in which water molecules are added are called_______________? a. Hydrated ions b. double salts c. hydrates d. complexes
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11) Solution of Na2SO4 will be_________________? a. basic b. acidic c. neutral d. cannot be presicted without data
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12) 1 molar solution of glucose in water contains weight of glucose________________? a. 180g/dm3 b. 170g/dm3 c. 190g/dm3 d. 195g/dm3
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13) Water of crystallization can be removed by________________? a. drying b. heating c. evaporation d. All of the above
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14) Which one of the following salt does not hydrolyzed________________? a. Na2SO4 b. AlCl3 c. CuSO4 d. NH4Cl
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15) Which of the following unit of concentration is independent of temperature ? a. Molarity b. Molality c. Mole fraction d. all
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16) The molal boiling point constant is the ration of the elevation of boiling point to____________________? a. Molarity b. Molality c. More fraction of solvent d. Mole fraction of solute
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17) Which has the minimum freezing point ? a. One Molal NaCI b. One molal KCI solution c. One molal CaCI2 d. One molal urea solution
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18) Which of the following substance do not show continuous solubility curve ? a. KCIO4 b. Na2SO4. 10H2O c. K2Cr2O7 d. PbCl2
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19) Every sample of matter with uniform properties and fixed composition is called_________________? a. solute b. solvent c. solution d. phase
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20) The component of solution which is in smaller amount is called_________________? a. solvent b. solute c. phase d. ion
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21) 10ml of alcohol dissolve in 90ml of water unit of concentration used is________________? a. % w/w b. % w/v c. % v/v d. % v/w
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22) 58.5g of of NaCl per 1 dm3 of solution of NaCl in water the concentration of solution will be___________________? a. 0.1 M b. 1 m c. 1 M d. 0.1 N
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23) If the volume of solution is equal to sum of volumes of its all components then the solution_____________? a. will be an ideal solution b. will be non-ideal solution c. will show deviations from Raoults law d. both b & c
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24) The solution which distils over with change in composition________________? a. ideal solution b. zeotropic solution c. azeotropic solution d. non-ideal solution
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25) Concentration of solute molecule when they are in equilibrium with solid substance at particular temperature is called________________? a. saturated solution b. solubility c. unsaturated solution d. super saturated solution
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26) The determination of correct molecular weight from Raoults law is applicable to_________________? a. a volatile solute in dilute solution b. a non-electrolyte & non volatile solute in concentrated solution c. a non-electrolyte & non volatile solute in concentrated solute d. non volatile solute in a dilute solution
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27) Beckmanns apparatus is used to measure_______________? a. boiling point elevation b. depression in freezing point c. lowering of vapour pressure d. lowering of osmotic pressure
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28) Hydration is a process in which_________________? a. Molecules are surrounded by solvent molecules b. Ions are surrounded by solvent molecules c. Both ions and molecules are surrounded by solvent molecules d. Both ions and molecules are surrounded by water molecules
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29) ppm means________________? a. parts of solute in 1000 parts of solvent b. parts of solvent in 1000 parts of solute c. parts of solute in one million parts of solution d. parts of solvent in one million parts of solute
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30) The relative lowering of vapour pressure is directly proportional to molality if the solution is________________? a. concentrated b. dilute c. saturated solution d. all of the above
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31) If electricity is passed through CuSO4 solution by using Pt electrode then which of the following possible change occurs ? a. H2 is deposited at cathode b. Colour of the solution becomes fade c. Cu is deposited at anode d. All are possible
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32) Which has maximum oxidation number ? a. N b. Cr c. S d. Mn
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33) In an electrolytic cell current flows ? a. From cathode to anode in outer circuit b. From anode to cathode outside the cell c. From cathode to anode inside the cell d. both B & C
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34) In a galvanic cell________________? a. Chemical energy is converted into electricity b. Chemical energy is converted into heat c. Electrical energy is converted into chemical energy d. Electrical energy is converted into heat
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35) Molten NaCl conducts electricity due to the presence of_______________? a. Free electrons b. Free molecules c. Free ions d. Atoms of Na and Cl
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36) Electricity in voltaic cell is produced due to_________________? a. neutralization b. oxidation c. reduction d. both B & C
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37) In electrolytic cell electricity carries________________? a. spontaneous reaction b. non-wpontaneous reaction c. neutralization d. all of above
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38) In Galvanic cell electrons flow from anode to cathode through__________________? a. external electric circuit b. salt bridge c. movement of ions d. all of the above
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39) For the measurement of standard electrode potential Zn is dipped in________________? a. 1 M ZnO solution b. 1 M ZnSO4 solution c. 1.5 M ZnSO4 solution d. 0.1 M ZnSO4 solution
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40) Zn(s)/Zn+2(aq) 1M | | Cu+2(aq) 1M/Cu(s) is representation of reaction in______________? a. Daniel cell b. Downs cell c. Voltaic cell d. Nelsons cell
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41) Voltaic cell can be recharged by______________? a. by addition of fresh solution b. by replacing external circuit with external source of electricity c. by removal of solution d. by heating it
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42) H2 gas in SHE is filled at pressure of___________________? a. 760mm of Hg b. 750mm of Hg c. 780mm of Hg d. 800mm of Hg
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43) Chemical used in salt bridge is________________? a. KOH b. KCI c. KNO3 d. KBr
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44) List of elements based on hydrogen scale is called________________? a. periodic table b. groups c. periods d. electrochemical series
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45) In galvanic cell Zn acts as an anode so its value of standard reduction potential in comparison to coupled electrode would be________________? a. greater b. lesser c. sum of reduction and oxidation potentials d. none
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46) Greater value of standard reduction potential smaller will be tendency______________? a. to form positive ions b. to form negative ions c. gain electrons d. all are possible
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47) Lead accumulators are_______________? a. secondary cell b. primary cell c. voltaic cell d. both A & C
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48) Capacity of one lead accumulator cell is___________________? a. 1.5 volts b. 2 volts c. 3 volts d. 1 volts
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49) The strength of solution of an element whose electrode potential is to be measured is________________? a. 2M b. 1N c. 1m d. 1M
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50) Voltaic cell is a_________________? a. irreversible cell b. reversible cell c. alkaline cell d. all of the above
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