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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Chapter-11 ALCOHOLS, PHENOLS AND ETHERS VVI Objective Question Class-12th

Q.1. Methyl alcohol is industrially prepared by the action of : (A) CH₃COCH₃ (B) CO + H₂ (C) CH₃COOH (D) C₂H₅OH Ans :- (B) Q.2. Which of the following alcohols will give the most stable carbocation during dehydration ? (A) 2 – Methyl- 1 – propanol (B) 2- Methyl- 2 – propanol (C) 1- Butanol …

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Organic Chemistry Class-12 Chapter-10 Haloalkanes And Haloarenes Most VVI Objective Questions

Q.1. Hybridization of carbon in ethane is (A) sp³ (B) sp² (C) sp (D) sp³d² Ans :- (A) Q.2. The hybridisation of carbon in diamond is (A) sp³ (B) sp² (C) sp (D) dsp² Ans :- (A) Q.3. Ethylidene chloride is a/an ………… (A) Vic – dihalide (B) gem – dihalide (C) α – elimination …

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Inorganic Chemistry Class-12 Chapter-9 Coordination Compounds Most VVI Objective Questions

Q.1. Spetter is (A) Pure zine (B) Impure zine (C) Impure aluminium (D) Impure mercury Ans :- (B) Q.2. Which of the following does not have optical isomer ? (A) [Co(NH₃)₃Cl₃] (B) [Co(en)₃]Cl₃ (C) [Co(en)₂Cl₂]Cl (D) [Co(en)(NH₃)₂Cl₂]Cl Ans :- (A) Q.3. [Co(NH₃)₆]Cl₃ is which type of complex compound ? (A) Cationic complex (B) Anionic complex …

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Inorganic Chemistry Class-12 Chapter-8 The d-and f-Block Elements Most VVI Objective Questions

Q.1. Which of the following elements is liquid at room temperature ? (A) Zn (B) Hg (C) Cu (D) Au Ans :- (B) Q.2. Most abundant element in earth’s crust is (A) Si (B) Al (C) Zn (D) Fe Ans :- (A) Q.3. Electronic configuration of alkaline earth element is (A) ns² (B) ns¹ (C) …

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Inorganic Chemistry Class-12 Chapter-7 The p- Block Elements Most VVI Objective Questions

Q.1. The geometry of PCl₅ is (A) Trigonal bipiramidal (B) Octahedral (C) Tetrahedral (D) None Ans :- (A) Q.2. The basicity of orthophosphoric acid is (A) 2 (B) 3 (C) 4 (D) 5 Ans :- (B) Q.3. The shape of XeF₂ is (A) Linear (B) Triangular (C) Angular (D) Planar Ans :- (A) Q.4. The …

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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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Inorganic Chemistry Class-12 Chapter-6 General Principles And Process Of Isolation Of Elements Most VVI Objective Questions

Q.1. The important ore of iron is (A) Siderite (B) Haematite (C) Pyrites (D) Bauxite Ans :- (B) Q.2. Which among the following is not an ore of magnesium ? (A) Gypsom (B) Dolomite (C) Magnesite (D) Carnalite Ans :- (A) Q.3. Boron shows diagonal relation with (A) Al (B) C (C) Si (D) Sn …

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