chemistry mcqs need help......

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chemistry mcqs need help......

Post  himanshu vij on Thu Jun 19, 2008 9:29 pm

Q1 in a solution of ch3cooh and ch3coona the ratio of salt to acid concentration is incresed by 10 times the ph of solution increses by
a)0 b)1 c)2 d)10

Q2 acidic hydrogen is present in
A) ethyne b)ethene C)pentane d)benzene

Q3 the cathodic reaction in electrolysis of dilute sulphuric acid with platinum electrode is
a)neutralization B)oxidation c)reduction d)both oxidation and reduction

Q4 in reduction of dichromate by ferrous iron in the acidic medium the no of electrons involved per chromium atom is
a)1 b)2 c)3 d)4

Q5there is no direct test for qualitative estimation of
a)N b)cl d)S d)O

Q6 water can accept proton as well as donate proton ,it behaves as
A)strong acid&base B)weak acid&base c)weak acid strong base d)strongacid weak base

Q7when P reacts with caustic soda forming PH3 and NaH2PO2 the reaction is
a)oxidation b)reduction c) redox d)hydration

Q8during electrolysis 96500c of electricity will lberate at n.t.p the volume of oxygen in litres as
a)5.6 b)6.5 c)11.2 d)22.4

himanshu vij

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