:Why is transistor used as aswitch?:Describe the following:(i)Acetylation (ii) Cannizzaro reaction(iii) aldol condensation (iv)Decarboxylation (v) Diazotisation:Why does nitrogen showcatenation properties less thanphosphorus?:Why are halogens strongoxidising agents?:How are XeO3 and XeOF4prepared?: Write balanced equationswhen NaCl is heated with sulphuricacid in the presence of MnO2: Give the disproportionationreaction of H3PO3.:] What do you understandby the term glycosidic linkage?:What is glycogen? How is it differentfrom starch? [iii] What are thehydrolysis products of (i) sucroseand (ii) lactose:Distinguish by a chemicaltest – (a) Acetaldehyde and acetone(b) Methyl amine and dimethyl amine(c) Phenol and benzoic acid.:What happens when ethanolis heated with sulphuric acid at 413K.? Explain mechanism of thereaction ?: Why do noble gases havecomparatively large atomic sizes?: Why is dioxygen a gas butsulphur a solid?: Why does R3P = O exist butR3N = O does not ?:Explain: (i) Zone refining (ii)Column chromatography:Discuss briefly giving anexample the role of coordinationcompounds in biological systems:What is spectrochemicalseries?: write the formula for theTetrahydroxozincate(II): Conductivity of 0.00241 Macetic acid is 7.896 × 10–5 S cm–1.Calculate its molar conductivity andif for acetic acid is 390.5 S cm2mol–1, what is its dissociationconstant?: Calculate the mass of a non-volatile solute (molar mass 40 gmol–1) which should be dissolved in114 g octane to reduce its vapourpressure to 80%:What is meant by the term‘broad spectrum antibiotics’ ?Explain.?:Explain the termcopolymerisation and give twoexamples?: [NiCl4]2– is paramagneticwhile [Ni(CO)4] is diamagnetic thoughboth are tetrahedral. Why?:Convert- (a) 2-Chlorobutaneto 3, 4-dimethylhexane (b) 2-Methyl-1-propene to 2-chloro-2-methylpropane: Explain the following aboutthe transition elements- (a)Paramagnetic nature (b) Complexformation:Write the chemistry ofrecharging the lead storage battery,highlighting all the materials that areinvolved during recharging.: State Henry’s law andmention some important applications:Silver forms ccp lattice andX-ray studies of its crystals showthat the edge length of its unit cell is408.6 pm. Calculate the density ofsilver (Atomic mass = 107.9 u):Explain how vacancies areintroduced in an ionic solid when acation of higher valence is added asan impurity in it: What are the advantage ofartificial sweeteners ?: Write the formula of themonomer used in the coating of non-stick cook wares ?

chetan prasad mishra , 10 Years ago

Grade Upto college level