Fedral Board
Chemistry 2013
Inter(Part-II)
Objective

1. Circle the correct option. 17

• What is the correct order of second ionization potential of C,N,O and F?

a) 0 >N > F> C
b) 0>F>N>C
c) C>N>0>F
d) F> 0 > N > C

• Epsom salt is a mineral of the metal

a) Calcium
b) Sodium
c) Magnesium
d) Strontium

• In P-Type semiconductor, s:: on is doped with

a) Copper
b) Nitrogen
c) Phosphorous
d) Boron

• Which of the following is the strongest alkali?

a) Ca(OH)
b) NaOH
c) KOH
d) Ba(OH)₂

• Reaction of Oxalic acid with conc. 1/2SO, produces
  
  a) CO₂
  b) CO
  c) Both CO and CO
  d) No reaction occures

• Which of the following is the strongest acid?

a) HCIO
b) HC1O₂
c) HCIO₃
d) HCl

• Polyethylene, polyvinyl acetate and starch are

a) Copolymers
b) Homopolymers
c) Addition polymers
d) Condensation polymers

• Which is the final product of rotary kiln in cement manufacturing?

a) Cement
b) Slurry
c) Cement Clinker
d) Mortar

• Ecosystem is smaller unit of

a) Lithosphere
b) Biosphere
c) Hydrosphere
d) Atmosphere

• Which of the following is a -decay product of the radium?

a) Ho
b) Kr
c) Ne
d) Xe

• In Open Hearth process, dolomite is used if the impurities present are...

a) Mn, Si
b) C, Si
c) P, S
d) P, CI

• The compound which is NOT isomeric with diethyl ether is

a) Butanone
b) 2-Methyl propane-2-ol
c) Butane-1-ol
d) None of these

• Which organic compound can behave as an acid too?

a) C₂H₄
b) CH₃ -CH = C1₂
c) CH₃- —CH,
d) CH₃-C=C-H

• A glyoxal is formed due to reaction of benzene with

a) Aldehyde
b) Ketone
c) Ozone
d) Oxygen gas

• Which of the following is NOT a nucleophile?

a) H₂0
b) H₂S
c) BF₃
d) NH₃

• Which of the following enzymes is NOT involved in fermentation of starch?

a) Diastase
b) Zymase
c) Urease
d) Maltase

• Ketones are less reactive than aldelydes. Which of the following reagents will react with both aldehydes and ketones?

a) Tollen's reagent
b) Fehling's reagent
c) Grignard reagent
d) Benedict's reagent

Fedral Board
Chemistry 2013
Inter(Part-II)
Subjective

2. Attempt any Fourteen parts. 42
The answer to each part should not exceed 5 to 6 lines.

• a) Why does the metallic character increase from top to bottom in a group?
  b) Give reason for the statement, "Lanthanides contraction controls the atomic size of element of 6th and 7th period".
• a) Why is the aqueous solution of soda ash alkaline in nature?
  b) How is Down's cell process better than other processes used for the manufacturing of sodium metal?
• Discuss the anomalous behaviour of Boron with respect to the members of its own group.
• Why is silicone oil preferred over ordinary lubricants?
• Both CO₂ and SiO₂ are oxides of group IV A elements. However, CO2 exists as a gas and SiO, exnts as a solid. Explain.
• How does nitric acid oxidize the non-metals? Give three examples in the form of balanced chemical equations.
• Halogens form a homologous series but fluorine differs from the other halogens in many respects.Discuss.
• a) What are Chelates? Give an example.
  b) How is chromate ion (CrO41 ) converted into dichromate ion (Cr₂O₇)?
• a) Give all possible isomers of CH₂.
  b) What are homocyclic and heterocyclic Hydrocarbon? Give an example of each.
• How is 2-Butene prepared from:
  a) An alkyl halide
  b) Vicinal dihalide
• Briefly explain the difference between Lindlar's catalyst and Raney-Nickle catalyst with respect to their composition and use.
  
• Write the names of following aromatic compounds:
  C₆H₅-O-C₆H₅:
  (C₆H₅-CH₂-C₆H₅:
• How is Grignard Reagent used for the preparation of alkanes? Give any three examples with reaction.
• a) Absolute alcohol can not be prepared by fermentation of molasses. Give reason.
  b) How is alcohol denatured?
• Give a reaction example of disproportionation reaction of aldehyde.
• Amino acids are simplest protein. Amino acids show dual character both as an acid and base.Give a reaction example to show their dual nature.
• What are the responsibilities of nucleic acids? What type of nucleic acids have been discovered?
• How is ozone affected by chlorofloro carbons? Briefly explain.
• Give a general mechanism for the base-catalysed nucleophilic addition reaction of carbonyl compounds.

 Attempt any Two questions. 26

3. a) How is bleaching powder prepared by Beckmann's method?
   b) What is sacrificial corrosion? Explain with an example.
   c) How does KMnO, oxidize the following: H₂SO₄, FeSO₄, , Oxalic acid
   d) Determine the charge on central metal atom of the following complexes:[PlCl(NO₂)(NH₃)₂]; [Fe(CN)₆; [Ni( CO )₄]

4. a) Give any two chemical tests to distinguish between 1-Butene and 1-Butyne.
   b) How will you bring about the following conversion:
   i) Methane to Ethane
   ii) Ethane to Methane
   c) How do tertiary alkyl halide undergo nucleophilic substitution reaction? Give a detailed general mechanism.
   d) Show by diagram the industrial preparation of Methanol.

5. a) What are Lipids? In what ways are fats and oil different?
   b) Discuss the hydrolysis of triglyceride and reaction of triglyceride with an alkali.
   c) How does acid deposition occur? What are its effects on environment?
   d) Write the structural formulas of the following organic compounds: Iso-butyl alcohol; Malonic acid; Vinyl Chloride