SPECIAL INSTRUCTIONS:-
विशेष निर्देश:-
1: You must right question paper series in the circle at the top left side of title page of your answer book.
2: While answering your questions you must indicate on your answer book the same question number as appears in your question paper.
3: Do not leave Blank Page or pages in your answer book.
4: All questions are compulsory internal choices have been given in some questions questions.
5: Question number 1 to 6 are MCQs carrying 1 mark each. Choose one correct answer among four options.
6: Question number 7 to 10 are very short answer type questions carrying 1 mark each. Answer these in one word or one sentence.
7: Question number 11 to 17 are short answer type questions carrying two mark each. Answer these questions in about 30 words each .
8: Question number 18 to 25 are short answer type questions carrying 3 marks each answer these questions in a 40 words each:
9: Question number 26 to 28 are long answer type questions caring 4 marks each. Answer these questions in about 50 words each.
Q7: what is instantaneous rate of reaction?
Q8: what do you understand by glycosidic linkage?
Q9: under what condition vent Hoff factor is greater than Unity?
Q10: do aldehydes exhibit position isomerism?
Q11: difference between homogeneous and heterogeneous catalyst
Q12: state Raoult's law for an ideal solution containing non volatile solute by non ideal solution sources to deviation from raoult's law
Q13: explain the geometry and magnetic behaviour of [CO(NH3)6]3+ complex according to valence bond theory
Q14: Define unit cell. Calculate the number of atoms in fcc unit cell.
Q15: alcohols are comparatively more soluble in water than hydrocarbons of comparable molecular masses .explain.
Q16:
a) what are transition elements?
b) why transition metals show variable Oxidation State?
Q17: write the following reactions :
a) aldol condensation reaction.
b) cross cannizaro's reaction
Q18:
a) why is molality preferred than molarity?
b)what are tranquilizers?
c) define chemotherapy.
OR
a) define mass percentage .
b) what is tincture of iodine. give the constituents of dettol
Q19:
a) write DDT structure. give harmful effects of DDT.
b) write Wurtz fitting reaction.
Q20:
a) drive expression for half life period of first order reaction.
b) Give the example of zero order reaction
Q21:
a) draw the structure of H3PO4.
b) why concentrated sulphuric acid is always diluted by adding sulphuric acid to water with constant during and not water to the acid.
c) arrange HCLO4 , HCLO3 , HCLO2 and HCLO in order of decreasing order of acidic strength.
OR
a) name the scientist who prepared the first compound of noble gases.
b) give the chemical reaction of HNO3 with iodine.
c)why are halogens are coloured
Q22:-
a) discuss the electrochemical theory of corrosion.
b)for a reaction:
Ni(s) + 2Ag+ (1M)→ Ni2+ (1M) + 2Ag(s)
Which species get reduced?
Q23:
a) why the bond length of so in carboxylic acid is slightly larger than that in aldehyde and ketone.
b) complete the following reaction :-
C6H5Br + Mg + ether→ ? +CO2 + H3O+→ ?
c) arrange the following in order of increasing acid strength
C6H5COOH, C6H4COOHNO2, C6H3(NO2)2,C6H4COOHOCH3
Q24:
a) what are cause of Lanthanide contraction ?discuss.
b)what are misch metal?
Q25:
a) What are carbohydrates? Give the important function of carbohydrates.
b) what are micelles?
Q26:
a) tertiary amines do not undergo acylation.Explain.
b) write a short note on hoffman's degradation reaction
c) how will you convert aniline to Benzene diazonium chloride?
OR
a) write diazotization reaction.
b) Aromatic primary amines can't be prepared by Gabriel phthalimide synthesis.
c) explain how will you convert methyl amine to ethylamine.
d) complete the following reaction:
CH3OH +P,I2→? + KCN→?+ 4H/ alc. +Na→?
Q27:
a) what are primary cells.
b) Give the synthesis of bakelite.
c) Why is nylon 66 so called?
d) State and explain the term flux.
Q28:
(a)Boiling point of HCL is lower than HF.Explain why.
(b) Give the structure of XeOF2.
(c) Write a short note on electrolytic refining of copper.
(d) why are halogens strong oxidizing agents?
