Basic Chemistry MCQs

GURU MCQs provides MCQs of Chemistry from Basic to Advance, so that you can prepare accordingly. MCQs of Chemistry section covers important topics of chemistry. Most repeated Chemistry MCQs frequently encountered in Inspector, ASI, Sub-inspector, Constable, FPSC, PPSC, ETEA, FIA, Police, Army, Navy, Airforce, IB, MOFA, ASF, LHC, Educators, and various other competitive exams, as well as government and private job assessments. Chemistry most repeated MCQs include Basic chemistry MCQs, Chemical Bond MCQs, Gases MCQs, Liquids and Solids MCQs, Hydrocarbons MCQs, Polymerization MCQs, Rates of Reactions MCQs, Transition Elements MCQs, Organic Chemistry MCQs, Electrons in Atoms MCQs, Moles and Equations MCQs, et

181. 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

182. The solution which distils over with change in composition________________?

A. ideal solution
B. zeotropic solution
C. azeotropic solution
D. non-ideal solution

183. 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

184. 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

185. 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

186. 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

186. 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

187. 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

188. 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

189. Which has maximum oxidation number ? 

A. N
B. Cr
C. S
D. Mn

190. Chemical used in salt bridge is________________? 

A. KOH
B. KCI
C. KNO3
D. KBr

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