Electron emission: The phenomenon of emission of electrons from the surface of a metal. The minimum energy needed by an electron to come out from a metal surface is known as “work function” of the metal. It is denoted by Φ0 or W0 and measured in electron volt (eV). Work function W= hυ = hc/λ … Read more
1. Calculate the volume of water which could be added to 20 ml of 0.65 m HCl to dilute the solution to 0.2 m? Ans.For dilution – Vol of water to be added to 20 ml = = 65ml – 20ml = 45 ml. 2. A solution is prepared by dissolving 11g glucose in water at. What … Read more
1. What is the shape of Iron pentacarbonyl? Ans. Geomectry = Trigonal bipyramidal/span> 2. What do you understand by stability of a complex and instability constant of coordination compounds? Ans. The stability of a complex in solution is the degree of association between the two species involved in the state of equilibrium. The instability constant is … Read more
1. Can you store AgCl solution in Zinc pot? Ans. No. We can’t store AgCl solution in Zinc pot because standard electrode potential of Zinc is less than silver. 2. Define the term – standard electrode potential? Ans. When the concentration of all the species involved in a half-cell is unity, then the electrode potential is called … Read more
1. Define the term –solubility? Ans. The maximum amount of a substance that can be dissolved in a specified amount of solvent is called its solubility. 2. What is the effect of pressure on solubility of a gas? Ans. The solubility of a gas increases with increases of pressure. 3. State Henry’s Law. Ans. Henry’s Law states that … Read more
1. Give one use of Formalin. Ans. Formalin is used as a disinfectant, preservative for biological specimens and in leather industry. 2. What is the chemical name of Tollen’s reagent and Fehling’s solution. Ans. Tollen’s reagent = Ammoniacal Silver Nitrate Fehlings solution = Sodium Potassium Tartarate. 3. Write the structure of alkenes that on ozonolysis will … Read more
1. Write IUPAC names of :- i. Ans. 5 – Methyloctan-3-ol ii. Ans. 1-Chloro propan-2-ol iii. Ans. Pentan – 1,3,4 – triol iv. Ans. 2 – Methylpropan -2-ol v. Ans. 1,3 – Dibromo – 4- chloro – 2- butanol vi. Ans. 5 – Chloro – 4 – ethyl – 5- methyl hexanol. vii. Ans. 2 – Phenyl ethanol viii. Ans. 2- Methyl phenol. … Read more
1. Give IUPAC names of following compounds (i). (ii). (iii). (iv). (v). (vi). (vii). (viii). (ix). (x). Ans. (i). 1, 3- Dibromobutane (ii). 1- Cholopropan-2-ol(iii). 2, 3 – Dibromo-1-chloro-3-methylpentane(iv). 2-Choloro-3-ethyl-2-methyl pentane(v). 1-Chloro-2-phenylethane(vi). 1-Chloro-1-phenyl ethane(vii). 1, 2, 3, 4, 5, 6- hexachlorocyclohexane(viii). 2, 2- Dihexyl 1, 1, 1-Trichloro ethane(ix). 4, 4-dibromobiphenyl(x). 1, 3-Dibromo -3- methyl … Read more
