Answer: 8 CxHy + 6O2 4CO2 + y/2 H2O Applying POAC on ‘O’ atoms 6 × 2 = 4 ×... View Article
Answer: 243 93 g Aniline produce 135 g acetanilide 1.86 g produce 135 × 1.86 / 93 = 2.70 g... View Article
Answer: 3 Only 1o amines can be prepared by Gabriel synthesis.
Given: √2 = 1.41 Answer: 141 PbI2(s) ⇌ Pb2+ (aq) + 2I– (aq) S+0.1 2s KSP (PbI2) = 8 ×... View Article
Answer: 5 T = 50C = 323.15 K P = 740 mm of Hg = 740 / 760 atm V... View Article
Answer: 1 ΔTf = i × Kf × m = 1 × 5.12 × 10 / 58200 × 1000 ∆Tf... View Article
Among the following allotropic forms of sulphur, the number of allotropic forms, which will show paramagnetism is ______. (a) α-sulphur... View Article
(a) Kinetic energy of electron is ∝ Z2 / n2 (b) The product of velocity (v) of electron and principal... View Article
Match the following : 1) (i)-(d),(ii)-(c),(iii)-(e),(iv)-(a) 2) (i)-(b),(ii)-(a),(iii)-(c),(iv)-(d) 3) (i)-(b),(ii)-(d),(iii)-(e),(iv)-(a) 4) (i)-(d),(ii)-(c),(iii)-(b)-(iv)-(e) Answer: 1 Lucas test – Conc. HCl and... View Article
If the solubility product of AB2 is 3.20 × 10-11 M3, then the solubility of AB2 in pure water is... View Article
The rate of a reaction decreased by 3.555 times when the temperature was changed from 40oC to 30oC. The activation... View Article
A solution of phenol in chloroform when treated with aqueous NaOH gives compound P as a major product. The mass... View Article
Answer: 101 The atomic number of Unnilunium is 101
For Freundlich adsorption isotherm, a plot of log (x/m) (y-axis) and log p (x-axis) gives a straight line. The intercept... View Article
A crystal is made up of metal iron ‘M1‘ and ‘M2‘ and oxide ions. Oxide ions form a ccp lattice... View Article
1) the electrolysis of acidified water using Pt electrodes. 2) the reaction of Zn with dilute HCl 3) the electrolysis... View Article
A set of solutions is prepared using 180 g of water as a solvent and 10g of different nonvolatile solutes... View Article
1) N2O 2) NO2 3) N2O5 4) N2O3 Answer: 4 NO + N2O4 \(\begin{array}{l}\overset{250k}{\rightarrow}\end{array} \) N2O3
Which of the following compound can be prepared in good yield by Gabriel phthalimide synthesis? Answer: 1 In this reaction,... View Article
1) 1 : 1 2) 3 : 1 3) 2 : 1 4) 4 : 1 Answer: 2 [35x +... View Article
