Kurukshetra University 2008 A.M.I.E.T.E Information Technology Chemistry - Question Paper

part – I (40 Marks)
ans all the ques. from this part

ques. – 1.
(a) choose the accurate option from the provided bracket to make the statement actual :
(i) A solution which on heating with CaCO3, we get the CO2 gas is _________ [conc. H2SO4 / dil. HCl / dil. H2SO4].
(ii) A solution which is used to distinguish an ammonium salt from a sodium salt is ______ [CuCl2 soln / NH4OH / dil. H2SO4 / AgNO3 soln.]
(iii) The pH of blood is 7.4, of saliva is 6.5 and a dil. acid 4.5. A solution which is alkaline is ____________ [dil. acid / saliva / blood].
(iv) Decomposition of ________ [NaCl / NaHCO3 / NaNO3] by dil. H2SO4 an unstable acid is formed.
(v) A metal which reacts with an alkali to liberate hydrogen is _______ [iron / copper / aluminium].
(b) provide balanced equations for the conversion of the subsequent :-
(i) An alkane to an alcohol (ii) An alkene to an alkane (iii) An alkyne to an alkene
(iv) An alcohol to an alkene (v) An aldehyde to an acid.
(c) provide reasons for the subsequent :
(i) Hydrogen sulphide is used as an analytical reagent in the laboratory.
(ii) Conc. sulphuric acid is used in the laboratory preparation of iodine from hydrogen iodide.
(iii) To distinguish ranging from dil. H2SO4 and dil. HNO3, barium chloride can be used.
(iv) The gas found when zinc reacts with dil. H2SO4 or conc. H2SO4 are various.
(v) H2S and SO2 decolourises acidified KMnO4 solution, even then the 2 gases can be distinguished with the identical.
(d) Fill in the blanks from the provided options in the brackets :
(i) Lead nitrate is a / an ___________ [acid / normal] salt of nitric acid.
(ii) When H2S reacts with Dil. HNO3, the oxidized product found is ________ [sulphur / sulphur dioxide / sulphuric acid]
(iii) A nitrate on heating melts and liberates only 1 neutral gas is ________ [lead nitrate / sodium nitrate / silver nitrate / calcium nitrate].
(iv) A mineral acid found from conc. nitric acid on reaction with a non-metal is ________ [carbonic acid / sulphuric acid / hydrochloric acid].
(v) The reaction of __________ [calcium oxide / calcium carbonate / calcium sulphate] with dilute nitric acid is an example of neutralization reaction.
(e) select the most probable substance from (A),(B),(C),(D) and (E) which need to be added to distinguish :
(i) Ammonia and sulphur dioxide gas (ii) Ammonium sulphate and ammonium chloride

Earning:   Approval pending.