Chemistry Q and A

Discussion about multiple choice questions and answers in various parts of Chemistry.

OQV NO – 466 What is the order of stability of [Co(NO2)6]3- and [Co(NO2)6]4-?
OQV NO – 466 What is the order of stability of [Co(NO2)6]3- and [Co(NO2)6]4-?
OQV NO – 465 What is the pOH of a solution that contains 0.03(M) HCl?
OQV NO – 465 What is the pOH of a solution that contains 0.03(M) HCl?
OQV NO – 464 What happens when diazomethane reacts with ketene?
OQV NO – 464 What happens when diazomethane reacts with ketene?
OQV NO – 463 35Br88 emits a beta particle and a neutron so the last element is--
OQV NO – 463 35Br88 emits a beta particle and a neutron so the last element is--
OQV NO – 462 Calculate the pressure for a gas expanded adiabatically from 1 L to 3 L at 1 atm.
OQV NO – 462 Calculate the pressure for a gas expanded adiabatically from 1 L to 3 L at 1 atm.
OQV NO – 461 CH3NO2 first reacts with Sn and HCl then with CHCl3 and KOH and then with H2 and Ni.
OQV NO – 461 CH3NO2 first reacts with Sn and HCl then with CHCl3 and KOH and then with H2 and Ni.
OQV NO – 460 What is the hybridization of the central atom I and the shape of the molecule IF5?
OQV NO – 460 What is the hybridization of the central atom I and the shape of the molecule IF5?
OQV NO – 459 Calculate the van der Waals constant b for a gas whose Tc is 300 K and Pc is 71 atm.
OQV NO – 459 Calculate the van der Waals constant b for a gas whose Tc is 300 K and Pc is 71 atm.
OQV NO – 458 What happens when CH3COOH reacts with HN3 in the presence of H2SO4?
OQV NO – 458 What happens when CH3COOH reacts with HN3 in the presence of H2SO4?
OQV NO – 457 What is the equivalent weight of KMnO4 in an acidic medium?
OQV NO – 457 What is the equivalent weight of KMnO4 in an acidic medium?
OQV NO – 456 What is the molarity of a 0.2 (N) K2SO4 solution?
OQV NO – 456 What is the molarity of a 0.2 (N) K2SO4 solution?
OQV NO – 455 What happens when diazomethane(CH2N2) reacts with acetylene(C2H2)?
OQV NO – 455 What happens when diazomethane(CH2N2) reacts with acetylene(C2H2)?
OQV NO – 454 What is the order of the covalent character of SnCl4 and SnCl2?
OQV NO – 454 What is the order of the covalent character of SnCl4 and SnCl2?
OQV NO – 453 Determine the pH of a solution that contains 0.05(M) NaOH.
OQV NO – 453 Determine the pH of a solution that contains 0.05(M) NaOH.
OQV NO – 452 Cyclopentadienyl cation has how many π electrons?
OQV NO – 452 Cyclopentadienyl cation has how many π electrons?
OQV NO – 451 Calculate the CFSE value of the coordination entity [NiCl4]2-.
OQV NO – 451 Calculate the CFSE value of the coordination entity [NiCl4]2-.
OQV NO – 450 A metal crystallises in a simple cubic lattice with a = 1.40 A0 so the d100 is---
OQV NO – 450 A metal crystallises in a simple cubic lattice with a = 1.40 A0 so the d100 is---
OQV NO – 449 What happens when acetamide(CH3CONH2) reacts with Br2 in the presence of KOH?
OQV NO – 449 What happens when acetamide(CH3CONH2) reacts with Br2 in the presence of KOH?
OQV NO – 448 What is the conjugate base of the acid H2CO3?
OQV NO – 448 What is the conjugate base of the acid H2CO3?
OQV NO – 447 What is the ionic strength(μ) of the solution of 0.3(M) Na3PO4?
OQV NO – 447 What is the ionic strength(μ) of the solution of 0.3(M) Na3PO4?
OQV NO – 446 What happens when cyclohexanone reacts with sulfonium ylide?
OQV NO – 446 What happens when cyclohexanone reacts with sulfonium ylide?
OQV NO – 445 What happens when phosphorus reacts with concentrated HNO3?
OQV NO – 445 What happens when phosphorus reacts with concentrated HNO3?
OQV NO – 444 Zn(s)+Cu2+(aq)↔Zn2+(aq)+Cu(s) At 300K the E0cell is 2V so the equilibrium constant is-
OQV NO – 444 Zn(s)+Cu2+(aq)↔Zn2+(aq)+Cu(s) At 300K the E0cell is 2V so the equilibrium constant is-
OQV NO – 443 What happens when ethylene(C2H4) reacts with diazomethane(CH2N2)?
OQV NO – 443 What happens when ethylene(C2H4) reacts with diazomethane(CH2N2)?
OQV NO – 442 What are the bond order and magnetic properties of the Li₂ molecule?
OQV NO – 442 What are the bond order and magnetic properties of the Li₂ molecule?
OQV NO – 441 Relationship between equivalent conductance(Λeq) and molar conductance(Λm) for KNO3.
OQV NO – 441 Relationship between equivalent conductance(Λeq) and molar conductance(Λm) for KNO3.
OQV NO – 440 What happens when CH3CONHOH is first heated with HCl and then treated with H2O?
OQV NO – 440 What happens when CH3CONHOH is first heated with HCl and then treated with H2O?
OQV NO – 439 What is the conjugate acid of HSO4?
OQV NO – 439 What is the conjugate acid of HSO4?
OQV NO – 438 At 1 atm Kp for the reaction N2O4(g) ↔ 2NO2(g) is 0.158 calculate Kx.
OQV NO – 438 At 1 atm Kp for the reaction N2O4(g) ↔ 2NO2(g) is 0.158 calculate Kx.
OQV NO – 437 What happens when ethyl chloride(C2H5-Cl) reacts with NaI in the presence of acetone?
OQV NO – 437 What happens when ethyl chloride(C2H5-Cl) reacts with NaI in the presence of acetone?