Write the structure of the following compounds: 

i) 3-Methyl-1,3-thiozol

ii) 2-Amino-1,4-diazine

How would you carry out the following? 

i) Conversion of benzene to ethylbenzene

ii) Conversion of nitration of naphthalene at high temperature

iii) Conversion of propylbenzene to benzoic acid

Draw all possible resonance structures of the carbocation formed during nitration of bromobenzene

Answer the following questions in one or two lines. 

i) Why are alkenes more soluble in water than the corresponding alkanes?

ii) Dehydrohalogenation of 1-bromobutane gives only one product while 2-bromobutane gives two products. Explain. iii) What is a regiospecific reaction?

Draw the orbital diagram of alkene.

Give reaction of the following changes: 

i) 1,5-dibromopentane to cyclopentane

ii) Heptane to toluene

Answer the following questions in one or two lines. 

i) What is the composition of natural gas?

ii) What are the limitations of Wurtz reaction?

iii) Give any two reducing agents used for the reduction of alkyl halides to alkanes

What is hyperconjugation? Explain the relative stability of primary, secondary and tertiary carbocations using hyperconjugation ?

Classify the following groups as electron donating or electron withdrawing substituents.

i) -COO

ii) -OR

iii) -C = N

iv) -COOR

The splitting of signal of –OH proton is not observed in the NMR spectrum of an ordinary sample of commercial sample of ethanol but it is observed in NMR spectrum of pure anhydrous ethanol. Explain.

Explain intermolecular and intramolecular hydrogen bonding giving suitable examples.

The chlorination of 2-bromobutane is given below.

Idientify the chiral centres in the reactant and the products and determine their configuration as R/S.

Explain chirality giving suitable example. How can chirality be checked using elements of symmetry? Discuss giving different elements of symmetry.

Using explain the formation of ethane molecule giving the formation of hybrid orbitals. suitable diagrams

Write the IUPAC names of the following compounds:

Explain the terms-the number average molar mass and the mass average molar mass of a polymer giving suitable expressions for them.

In photochemical decomposition of acetone using 313 nm light, 7.57 x 10-6 mol of carbon monoxide is formed in 20 minutes. If the light absorbed corresponds to 2.41 x 10-3 J s-1 , calculate the quantum efficiency for the formation of carbon monoxide

Briefly explain various experimental methods available for studying the reaction rates.

Draw and explain the working of Daniell cell with salt bridge using suitable diagram.

How can you determine transport number using Hittorf method?