Chemistry 12th

Inorganic Chemistry Class-12 Chapter-9 Co-ordination Compound Most VVI Subjective Questions

Q.1. Write difference between double salt and Complex ? Ans:- Double Salt:- These are stable in solid state. Double salt are break down into its ion when disolve in water(H₂O). Example:- Carnallite, KCl.MgCl₂.6H₂O etc. Complex:- Complex ion are do not dissociate into water(H₂O). The spin only magnetic moment of is 5.9 BM predict the geometry of the complex …

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Physical chemistry Class-12 Chapter-3 Electrochemistry Most VVI Subjective Questions

Q.1. Write the differences between electrochemical cell and electrolytic cell ? Ans:- Electrochemical Cell: (i) It converts chemical energy into electrical energy. (ii) Salt bridge is used. (iii) Anode works as -ve charge and Cathode works as +ve charge. Electrolytic Cell: (i) It converts electrical energy into chemical energy. (ii) Salt bridge is not used. (iii) Anode works as +charge and Cathode …

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Physical Chemistry Class -12 Chapter-2 Solution Most VVI Subjective Questions

Q.1. What do you mean by elevation of boiling point ? Ans:- On adding a non volatile solute to a volatile liquid(solvent)  its boiling point increases, the increases in boiling point is known as elevation of boiling point. Q.2. Define osmotic pressure.  Ans:– Osmosis is the phenomenon of a spontaneous flow of the solvent molecules …

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Physical Chemistry Class -12 Chapter-1 Solid State Most VVI Subjective Questions

Q.1. Why are solids rigid ? Ans:- Solids are rigid because the intermolecular forces of attraction that are present in solids are very strong. Their constituent particles have fixed positions and can only oscillate about their mean position. Q.2. Why is glass considered a supercooled liquid ?  Ans:- Glass is an amorphous solid and has …

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Physical Chemistry Class-12 Chapter-5 Surface chemistry Most VVI Objective Questions

Q.1. P₂O₅ is a good (A) adsorbate (B) absorbent (C) Reducing agent (D) Bleaching of colour Ans :- (B) Q.2. Which gas is absorbed strongly by charcoal (A) Co (B) NH₃ (C) NCl₃ (D) H₂ Ans :- (C) Q.3. A vogadro’s number (N) is equal to (A)  6.023 × 10²⁴ (B) 6.023 × 10²³ (C) …

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Physical Chemistry Class-12 Chapter-4 Chemical Kinetics Most VVI Objective Questions

Q.1. Which of the following is incorrect about the order of a reaction ? (A) It is Calculated Experimentally (B) It is Sum of Powers of Powers (C) The Order of reaction cannot be fractional (D) There is not necessairaly a connection between order and stoichiometry of a reaction Ans:- (C) Q.2.  A catalyst is …

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Physical Chemistry Class-12 Chapter-3 Electrochemistry Most VVI Objective Questions

Q.1. Faraday’s 2ⁿd law of electrolysis and related to (A) atomic number of the cation (B) atomic number of the aniom (C) equivalent weight of the electrolyte (D) speed of cation Ans :- (C) Q.2. Which of the following is not a man – electrolyte ? (A) CH₃COOH (B) glucose (C) CH₃CH₂OH (D) urea Ans …

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Physical Chemistry Class-12 Chapter-2 Solutions Most VVI Objective Questions

Q.1.Which of the following solutions shows positive deviation from Roult’s law ? (A) Acetone + Aniline (B) Chloroform + Benzene (C) Water + Nitric acid (D) Acetone + Ethanol Ans :- (D) Q.2. The system that form maximum boiling azeotrope is (A) Acetone Chloroform (B) Carbon disulphide acetione (C) n- hexane -n- heptane (D) ethanol acetone …

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Physical Chemistry Class-12 Chapter -1 Solid State Most VVI Objective Questions

Q.1. The material used in the solar cells contains (A) Cs (B) Si (C) Sn (D) Ti Ans :-  (B) Q. 2. In the crystals of which of the following ionic compounds would you expect maximum distance between the centers of the cations and anions ?  (A) LiF (B) CsF (C) CsI (D) LiI Ans :- (C) …

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