(INTER PART-II)
CHEMISTRY
(Objective)
Group (1)
PAPER (II)
Time allowed:- 20 minutes
MAMIMUM MARKS:-17
NOTE: you have four choices for each objective type question as A,B,C and D. the choice which you think is correct fill that circle in front of the question number. Use marker or pen to fill the circles. Cutting or filling two or more circles will result in zero mark in that question. Attempt any four questions as given in objective type question paper and leave others blank. Use of ink remover or white correcting fluid is not allowed.

Question#1

• keeping in view the size of atoms which order is correct one
  
  (A) Mg>Sr
  (B) Ba>Mg
  (C) Lu>Cc
  (D) Cl>I
  
  
• Oxides of beryllium are
  
  (A) Acidic
  (B) Basic
  (C) Amphoteric
  (D) Neutral
  
  
• Which element forms an ion with charge
  
  (A) Be
  (B) Al
  (C) C
  (D) Si
  
  
• Which catalyst is used in contact process
  
  (A) FeO₃
  (B) V₂O₅
  (C) SO₃
  (D) Ag₂O
  
  
• Which halogen occurs naturally in a positive oxidation state?
  
  (A) Florine
  (B) Chlorine
  (C) Bromine
  (D) Iodine
  
  
• Which of the following is a non- typical transition element?
  
  (A) Cr
  (B) Mn
  (C) Zn
  (D) Fe
  
  
• Ethers show the phenomenon of
  
  (A) Position isomerism
  (B) Functional group isomerism
  (C) Metamerism
  (D) Cis-trans isomerism
  
  
• Preparation of vegetable ghee involves.
  
  (A) Halogenation
  (B) Hydrogenation
  (C) Hydroxylatio
  (D) Dehydrogenation
  
  Which of the following acid can be used as a catalyst in friedel crafts reactions?
  
  (A) AlCl₃
  (B) HNO₃
  (C) BeCl₂
  (D) NaCl
  
  
• Elimination bimolecular reactions involve
  
  (A) First order kinetics
  (B) Second order kinetics
  (C) Third order kinetics
  (D) Zero order kinetics
  
  
• Thanol can be converted into ethanoic acid by
  
  (A) Hydrogenation
  (B) Hydration
  (C) Oxidation
  (D) Fermentation
  
  
• Cannizzaro’s reaction is not given by
  
  (A) Formakdehyde
  (B) Acetaldehyde
  (C) Benzaldehyde
  (D) Trimethyl
  
  
• Which of the following reagentswill react with both aldehydes and ketones?
  
  (A) Grignard reagent
  (B) Tollen’s reagent
  (C) Fehlying reagent
  (D) Bencdict’s reagent
  
  
• Acctic acid is manufactured by
  
  (A) Distillation
  (B) Fermentation
  (C) Ozonolysis
  (D) Esterification
  
  
• Which of the following nitrogenous base is not present in RNA.
  
  (A) Cytosine
  (B) Adenine
  (C) Thiamine
  (D) Uracil
  
  
• Phosphorus helps the growth of
  
  (A) Root
  (B) Leave
  (C) Stem
  (D) Seed
  
  
• The main pollutant of leather tanneries in the waste water is due to the salt of
  
  (A) Lead
  (B) Chromium vi
  (C) Copper
  (D) Chromium III

CHEMISTRY
(SUBJECTIVE)
GROUP (I)
PAPER (II)
TIME ALLOWED:2.40 HOURS
MAXIMUM MARKS:68
SECTION-I

• Why the second value of electron affinity of an element is usually shown with a positive sign.
• Define electron affinity. Give its trend in periodic table.
• Why the aqueous solution of NO₂CO₃ is alkaline in nature.
• Write the formulas of
  (i) natron
  (ii) dolomite
• How lime mortar is prepared.
• Why SO₃ is dissolved in H₂SO₄ and not in water
• Write four uses of sulphuric acid.
• Write four points of similarities of oxygen and sulphure.
• What are freons and teflons.
• Define ligand and give one example.
• Why alkenes are more reactive than alkynes.
• Explain markowni kov’s rule with one example.

3. Answer briefly any eight parts from the followings:- 8 x 2 = 16

• Write down formulas for tincal and orthoboric acid.
• Write down any two properties of boron which show peculiar behaviour.
• Write down any two characteristic features of organic coumpounds.
• Define “thermal cracking”
• What are monocyclic and polycyclic aromatic hydrocarbons?
• Write down formulas for
  (a) aniline
  (b) toluene
• Write down any two methods for the preparation of alkyl halides.
• Briefly describe “wurtz synthesis “
• Write down formulas for lactic acid and tartaric acid.
• How ethanol is prepared from molasses?
• What are aliphatic and aromatic carboxylic acids? Give one example in each
• What are essential and non essential amino acids?

4.answer briefly any six parts from the following:- 6 x2 = 12

• How acetaldehyde is prepared from ethyl alcohol in the laboratory.
• How a- hydroxy acid are produced from aldehyde and ketones.
• Write down the formulas of the following(i) acetophenopne (ii) acetone
• Prepare 2-butenal from acetaldehyde in the presence of base.
• What are macro molecules? give examples
• How the drgree of polymerization helps to determine the molar mass of the polymer.
• What are macro nutrients? Give their name. (viii) what are clinkers?
• Write down the name of the components of the environment.

SECTION-II

NOTE: ATTEMPT ANY THREE QUESTIONS. (8 x 3 = 24)
Question#5
(a) Discuss position of hydrogen in group 1^st and VII(A) of periodic table.
(b) How sodium hydroxide is prepared on commercial scale.

Question#6
(a) Explain sp² – hybridization along with describing the structure of ethane.
(b) Explain the mechanism aldol condensation.

Question#7
(a) What happen when ethane is reacted with KMnO₄O_3, HBr and S₂Cl_2.
(b) Write a note on SN₁ reactions.

Question#8
(a) Describe the mechanism of friedal craft’s alkylation of benzene.
(b) Write the reactions of acetic acid with
(i) Na₂CO₃ (ii)NaHCO₃ (iii) NaOH (iv) Na
(c) Discuss electrochemical theory of corrosion.
(d) Write a note on incineration of industrial and hazardous waste.

(INTER PART-II)
CHEMISTRY
(objective)
GROUP(II)
PAPER (II)
TIME ALLOWED:- 20 MINUTES
MAXIMUM MARKS:-17
NOTE: you have four choices for each objective type question as A,B,C and D. the choice which you think is correct fill that circle in front of the question number. Use marker or pen to fill the circles. Cutting or filling two or more circles will result in zero mark in that question. Attempt any four questions as given in objective type question paper and leave others blank. Use of ink remover or white correcting fluid is not allowed.

Question#1

• Which statement is incorrect
  
  (A) All the metals are good conductors of electricity
  (B) All metals are good conductor of heat
  (C) All the metals form positive ions
  (D) All the metals form acidic oxide
  
  
• The oxides of beryllium are
  
  (A) Acidic
  (B) Basic
  (C) Amphoteric
  (D) Non of these
  
  
• Ahuminium oxide is
  
  (A) Acidic
  (B) Basic
  (C) Amphoteric
  (D) Non of these
  
  
• Laughing gas is chemically
  
  (A) NO
  (B) N₂O
  (C) NO₂
  (D) N₂O₅
  
  
• Cl₂O react with H₂O to form
  
  (A) HCLO
  (B) HCLO₃
  (C) HCLO₄
  (D) Cl₂ and O₂
  
  
• The colour of transition metal complexes is due to
  
  (A) D transition of electron
  (B) Loss of s electro
  (C) Ionization
  (D) Paramagnetic nature of transition elements
  
  
• The chemist who synthesized urea from ammonium eyanate was
  
  (A) Berziliuis
  (B) Kolbe
  (C) wholer
  (D) Lavoiser
  
  
• β,β- dichloro ethyl sulphide is commonly known as
  
  (A) Mustard gas
  (B) Laughing gas
  (C) Bio gas
  (D) Phosgene gas
  
  
• During nitration of benzene, the active nitrating agent is
  
  (A) NO₃
  (B) NO₂
  (C) NO₂
  (D) HNO₃
  
  
• Which of the following is not a nuclcophile
  
  (A) H₂O
  (B) H₂S
  (C) BF₃
  (D) NH₃
  
  
• Ethanol can be converted into ethanoic acid by
  
  (A) Hydrogenation
  (B) Hydration
  (C) Oxidation
  (D) Fermentation
  
  
• Which of the following compounds will not give iodo from test on treatment with I₂ NaOH
  
  (A) Acetaldehyde
  (B) Acetone
  (C) Butanone
  (D) 3-pantanone
  
  
• Which of the following reagents will react with both aldehydes and ketones
  
  (A) Grignard reagent
  (B) Tollen’s reagent
  (C) Fchlings reagent
  (D) Benedict reagent
  
  
• Which acid is used in the manufacture of synthetic fibre
  
  (A) Formic acid
  (B) Oxalic acid
  (C) Carbonic acid
  (D) Acetic acid
  
  
• Which one of the following element is not present in all proteins?
  
  (A) Carbon
  (B) Hydrogen?
  (C) Nitrogen
  (D) Sulphur
  
  
• Micro nutrients are required in quantity ranging from
  
  (A) 4-40g
  (B) 6 -200g
  (C) 6-200kg
  (D) 4.40kg
  
  
• Peroxy acetyl nitrate (PAN) is an irritant to human beings and its neffects
  
  (A) Eyes
  (B) Ears
  (C) Stomach
  (D) Nose

(INTER PART-II)
CHEMISTRY
(SUBJECTIVE)
GROUP(II)
PAPER(II)
TIME ALLOWED: 2.40 HOURS
MAXIMUM MARKS:68
SECTION-I

2.ANSWER BRIEFLY ANY EIGHT PARTS FROM THE FOLLOWING:- 8x2=16

• Write a note on blocks in periodic table.
• Why second value of electron affinity of an element is usually shown with a positive sign.
• Write a brief account of oxides of s block elements.
• What is role of gypsum in agriculture?
• What happens when (a) lithium carbonate is heated (b) beryllium is treated with sodium hydroxide.
• Write down reactions of nitric acid with zinc.
• P₂O₅ is a powerful dehydrating agent. Prove the statement.
• How sulphuric acid act as an oxidizing agent.
• Write down reactions of chlorine with cold and hot NAOH. (X) what are chelatcs?
• Why are some hydrocarbons called saturated and others unsaturated? What type of reactions they show.
• How does propyne react with (a) AgNO₃/NH₄OH (b) CU₂Cl₂/NH₄OH

3. Answer briefly any eight parts from the following :- 8 x 2 = 16

• Give first two stages of the effect of heat on H₃BO₃
• In which way AL become water soluble by using NaOH
• Write names and structures of two aromatic hetrocyclic compounds.
• What is catalytic cracking? (v) how toluene can be converted to benzoic acid?
• How hexane and heptain can give benzene and toluene respectively?
• Give the general mechanism pattern of the Sn2 reaction.
• How will you convert CH_3- CH₃ to (CH₃-CH₂)₄NBr
• Absolute alcohol cannot be prepared by fermentation process. why?
• Ethonal give different products with cone H₂SO₄ under different conditions.
• What are essential and non essential amino acids.
• Write general structure of peptide linkage.

4. Answer briefly any six parts from the following:- 6 x 2 = 12

• Give industrial preparation od acetaldehyde. (ii) write down mechanism of cannizzaro’s reaction.
• How will you distinguish between ethanal and propanal.
• write three uses of acetaldehyde.
• Give two differences between DNA and RNA.
• What is Rancidity of fats or oils?
• Define cement. Give its essential components.
• What reactions are taking place in first 24 hours during setting if cement.
• What are main sources of SO₂ as air pollutants.

SECTION-II

NOTE:attempt any three questions. (8 x 3= 24)
Question#5
(a) Discuss the position of hydrogen over IV A group.
(b) Discuss peculiar behaviour of beryllium with respect to other member of II A group.

Question#6
(a) Define atomic orbital hybridization and describe structures of ethane in view of atomic orbital hybridization
(b) Using ethyl bromide as a starting material how would you prepare (a) n-Butane (b) Ethene

Question#7
(a) Explain the mechanism of halogenation of benzene
(b) Prepare acetic acid from
(i) Methyl nitrile
(ii) Acetylene

Question#8
(a) Define paramagnetism and discuss paramagnetic behaviour in transition elements
(b) Write a note on “smog”