2nd Year Chemistry Notes Punjab Board MCQs

Many of the students can not easily learn all the topics from text book because the text books provided by Punjab Text Book Board (PTB) are very brief and helpful. For detailed study, a student needs some helping books are helping notes. Solved MCQs of 2nd year chemistry Chapter Wise exercise question answers. Read online from this page. Solved F.Sc 2nd Year Notes for All Subjects 12th Class Chemistry Helping Notes Of All Chapters 2nd year chemistry notes chapter 1 to 8 MCQs list is here.

Chemistry Chapter 9 to 16 Solved MCQs

You can easily Download 2nd Year F.Sc II Chemistry Notes in PDF and Online Quiz Test here for preparations of Chemistry Subject 12th Class FSC Part 2 Notes. All Solved F.Sc 2nd Year Chemistry Notes Pindi Board in PDF and otheres punjab boards Chemistry 2nd Year Notes,Short Questions,Numerical Problems.

12th Class Chemistry MCQs Chapter 9 Aromatic Hydrocarbons Punjab Board

Question 1: Aromatic compounds burn with sooty flame because ?

1. They have a high percentage of carbon
2. They have high percentage of hydrogen
3. they resist reaction with air
4. they have a ring structure

A

Question 2: The reaction shown here is ?

1. An electrophilic addition reaction
2. A reduction-addition reaction
3. An electrophilic substitution reaction.
4. An electrophilic elimination reaction

C

Question 3: On hydrogenation benzene liberates energy ?

1. 358.5 kJ/mole
2. 119 kJ-mol⁻¹
3. 150.5 kJ-mol⁻¹
4. 208 kJ-mol⁻¹

D

Question 4: The benzene molecule contains ?

1. Two double bonds
2. Three double bonds
4. One double bonds
5. Delocalized π-electrons

D

Question 5: The benzene ring is oxidized to maleic anhydride when strongly heated with ?

1. AlCl₃/150°C
2. Ni/200°C
3. V₂O₅/450°C
4. Sunlight

C

Question 6: Aromatic hydrocarbons are derivatives of ?

1. Alkene
2. Cyclohexane
3. Normal series of paraffins
4. Benzene

D

Question 7: The C – C bond in benzene is formed by hybridized carbon atom and overlapping is due to ?

1. sp²-sp²
2. sp³ -sp³
3. dsp³-dsp³
4. sp-p

A

Question 8: The carbons in the benzene ring are ?

1. not hybridized
2. sp² hybridized
3. Sp hybridized
4. sp’ hybridized

B

Question 9: Shape of benzene molecule is ?

1. Planar trigonal
2. Plane hexagonal
3. Pyramidal
4. Linear

B

Question 10: During nitration of benzene, the active nitrating agent is ?

1. NO₃
2. HNO₃
3. NO₂
4. NO₂⁺

D

Question 11: The number of 6-bonds in benzene are ?

1. 12
2. 8
3. 4
4. 6

A

Question 12: The electrophile in aromatic sulphonation is ?

1. SO₃
2. HSO₄
3. H₂SO₄
4. SO₃⁺

A

Question 13: Which of the following acid can be used as catalyst in Friedel-Craft’s reaction ?

1. AlCl₃
2. HNO₃
3. NaCl
4. BeCl₂

A

Question 14: Hexanol structure of benzene was confirmed by ?

1. NMR
2. HPLC
3. Mass
4. X-ray

D

Question 15: All the following are monosubstituted aromatic compounds, except ?

1. Toluene
2. Phenol
3. Benzoic acid
4. Xylene

D

Question 16: Amongst the following, the compound that can be most readily sulphonated is ?

1. Nitrobenzene
2. Benzene
3. Toluene
4. Chlorobenzene

C

12th Class Chemistry MCQs Chapter 10 Alkhl Halides Punjab Board

Question 1: Which of the following solvents is used instead of ether in the preparation of Grignard’s reagent ?

1. THF
2. H₅ C₆OCH₃
3. All of these
4. C₆H₅N(CH₃)₂

C

Question 2: Elimination bimolecular reactions involve ?

1. Third order kinetics
2. First order kinetics
3. Zero order kinetics
4. Second order kinetics

D

Question 3: SN2 mechanism involves ?

1. 3rd order kinetic
2. Zero order kinetic
3. 1st order kinetic
4. 2nd order kinetic

D

Question 4: Which of the following do not form Grignard’s reagent ?

1. CH₃F
2. CH₃Br
3. CH₃I
4. HC₃ - C l

A

Question 5: SN2 reaction can be best carried out with ?

1. Secondary R – X
2. None of the above
3. Primary R – X
4. Tertiary R – X

C

Question 6: The substances which donates a pair of electron to lectrophile are called ?

1. Dibasic acid
2. Electrophile
3. Nucleophile
4. Lewis acid

C

Question 7: Grignard reagent is reactive due to ?

1. The presence of Mg atom
2. The polarity of C-Mg bond
3. None of the above
4. The presence of halogen atom

B

Question 8: In primary alkyl halides, the halogen atom is attached to a carbon which is further attached to how many carbon atoms ?

1. Four
2. Three
3. One
4. Two

C

Question 9: Ethanal has ----------------- sigma bonds ?

1. 8
2. 5
3. 7
4. 6

D

Question 10: Which of the following is not a nucleophile ?

1. NH₃
2. H₂S
3. H₂O
4. BF₃

D

Question 11: Which one of the following ions is most stable ?

1. None
2. Sec carbonium ion
3. Primary carbonium ion
4. Ter-carbonium ion

D

Question 12: Which of the following compound is acetophenone ?

1. C₆H₅COC₆H₅
2. C₆H₅CHO
3. C₃HCOCH₃
4. C₆H₅COCH₃

D

Question 13: In β-elimination reaction, nucleophile attacks on ?

1. β- hydrogen
2. α-hydrogen
3. α- hydrogen
4. Hydrogen

A

Question 14: Ethyl bromide when reduces with ascent hydrogen, the product will be ?

1. Ethane
2. Ethyl alcohol
3. Butane
4. Propane

A

Question 15: Ethyl bromide is heated with Ag₂O in the absence of moisture, the product formed is ?

1. Ethene
2. Diethyl ether
3. Acetaldehyde
4. Ethanol

B

Question 16: For which mechanisms, the first step involved is the same ?

1. E₂ and SN2
2. E₁ and SN1
3. E₁ and E₂
4. E₁ and E₂

B

Question 17: Acetic acid can be obtained from CH₃MgI by treatment with ?

1. CO₂
2. CINH₂
3. HCHO
4. H₂O

A

12th Class Chemistry MCQs Chapter 11 Alcohols Phenols and Ethers Punjab Board

Question 1: Sodium salt of benzene sulphonic acid on fusion with caustic soda gives ?

1. Phenol
2. Benzene
3. Benzoic acid
4. None of theses

A

Question 2: Ethanol can be converted to acetaldehyde by ?

1. Dehydration
2. Hydrogenation
3. Oxidation
4. Hydroxylation

C

Question 3: Phenol is also known as ?

1. Carbonic acid
2. Citric acid
3. Carbolic acid
4. Maleic acid

C

Question 4: Hydrolysis of glucose to ethyl alcohol is carried by ?

1. Zymase
2. Lactase
3. Diastase
4. Invertase

A

Question 5: Dimethyl ether and ethyl alcohol are ?

1. Cis-trans isomers
2. Position isomers
3. Functional group isomers
4. Metamers

C

Question 6: The enzyme involved in fermentation of molasses to form ethyl alcohol is ?

1. Both (b) and (c)
2. Diastase
3. Invertase
4. Zymase

B

Question 7: Which compound is called universal solvent ?

1. H₃C – O – CH₃
2. H₃C – OH
3. H₃C – CH₂ – OH
4. H₂O

D

Question 8: Rectified spirit contains alcohol about ?

1. 90%
2. 85%
3. 95%
4. 80%

C

Question 9: According to Lewis concept, ethers behave as ?

1. Acid as well as base
2. Acid
3. None of these
4. Base

D

Question 10: The solubility of higher alcohols decrease because they tend to resemble ?

1. Hydrocarbons
2. Sugars
3. Glucose
4. Aldehydes

A

Question 11: Which substance is used as antifreeze ?

1. Methanol
2. Ethanol
3. Acetone
4. Acetic acid

D

Question 12: Methyl alcohol is not used ?

1. As an anti-freezing agent
2. For denaturing of ethyl alcohol
3. As a substitute of petrol
4. As a solvent

C

Question 13: Which enzymes is not involved in fermentation of starch ?

1. Invertase
2. Urease
3. Zymase
4. Diastase

B

Question 14: Ethane can be converted into ethanic acid by ?

1. Hydrolysis
2. Hydration
3. Oxidation
4. Hydrogenation

A

Question 15: Which one of the following ethers is unsymmetrical ether ?

1. Ethoxy ethane
2. Methoxy methane
3. Methoxy benzene
4. Phenoxy benzene

C

Question 16: Which compound shows maximum hydrogen bonding with water ?

1. CH₃OH
2. C₂H₅OH
3. C₆H₅OH
4. CH₃ – O – CH₃

B

12th Class Chemistry MCQs Chapter 12 Aldehydes and Ketones Punjab Board

Question 1: Benzyl alcohol is obtained from benzaldehyde by ?

1. Perkin reaction
2. Cannizzaro’s reaction
3. Claisen reaction
4. Wurtz reaction

B

Question 2: Which of the following reagent will react with both aldhydes and ketones ?

1. Bendict’s reagent
2. Tollen’s regent
3. Grignard reagent
4. Fehling’s reagent

C

Question 3: Ketones are produced by the dehydrogenation of ?

1. Secondary alcohol
2. Tertiary alcohol
3. Aldehyde
4. Primary alcohol

A

Question 4: Ketones are prepared by the oxidation of ?

1. Primary alcohol
2. None of these
3. Secondary alcohol
4. Tertiary alcohol

C

Question 5: All of the following tests are used to identify aldehydes except ?

1. Baeyer’s test
2. Fehling test
3. Benedicts test
4. Tollen’s test

A

Question 6: Which of the following will have the highest boiling point ?

1. Propanal
2. Methanol
3. 2-hexanone
4. Ethanal

C

Question 7: Silver mirror test is given by ?

1. Ketones
2. Aldehydes
3. Acids
4. Ethers

B

Question 8: Which of the following compounds will not give iodoform test on treatment with I₂/NaOH ?

1. 3-pentanone
2. Acetone
3. Acetaldehyde
4. Butanone

D

Question 9: The important step in Cannizzaro’s reaction is the intermolecular shift of ?

1. Proton
2. Hydronium ion
3. Hydrogen atom
4. Hydride ion

D

Question 10: Which of the following reagents can distinguish between aldehyde and ketone ?

1. Grignard reagent
2. Ammonical silver nitrate
3. H₂SO₄
4. Bayer’s solution

A

Question 11: Acetone reacts with HCN to form cyanohydrins. It is an example of ?

1. Nucleophilic substitution
2. Nucleophilic addition
3. Electrophilic addition
4. Electrophilic substitution

D

Question 12: Ketones are prepared by the oxidation of ?

1. Secondary alcohol
2. Primary alcohol
3. Tertiary alcohol
4. None of these

A

Question 13: The carbon atom of carbonyl group is ?

1. sp³ hybridized
2. sp² hybridized
3. Sp hybridized
4. None of these

B

Question 14: Which of the following is not derivative of NH₃ ?

1. Phenyl hydrazine
2. Picric acid
3. Alanine
4. Hydrazine

B

Question 15: The general formula of aldehyde is ?

1. CnH₂n
2. CnH₂nO H
3. CnH₂nO
4. CnH₂n₊₂O

C

Question 16: Cannizzaro’s reaction is not given by ?

1. Benzaldehyde
2. Formaldehyde
3. Acetaldehyde
4. Tarimethylacetaldehyde

C

Question 17: Which one of the following is the strongest reducing agent ?

1. C₃H₈
2. C₃H₇OH
3. CH₃COCH₃
4. C₂H₅CHO

D

12th Class Chemistry MCQs Chapter 13 carboxylic Acids Punjab Board

Question 1: Which one of the following metal cannot evolve hydrogen from acetic acid ?

1. Sodium
2. Potassium
3. Magnesium
4. Zinc

A

Question 2: Which acid is used in the manufacture of synthetic fiber ?

1. Carbonic acid
2. Acetic acid
3. Oxalic acid
4. Formic acid

B

Question 3: Which one of the following is unsaturated carboxylic acid ?

1. Succinic acid
2. Maleic acid
3. Malonic acid
4. Oxalic acid

B

Question 4: Which reagent is used to reduce a carboxylic group to an alcohol ?

1. H₂/Ni
2. LiAlH₄
3. H₂/Pt
4. NaBH₄

B

Question 5: Vinegar contains acetic acid nearly ?

1. 30%
2. 20%
3. 6-10%
4. 20-15%

C

Question 6: The product obtained when acetic acid is treated with phosphorous trichloridie ?

1. H₃C – C ║O – Cl
2. H₃C – C ║O – O – PCl₃
3. Cl – CH₂ – C ║O – O – H
4. H₃C – C ║O – O – Cl

A

Question 7: Acetic acid is-obtained from ethyl alcohol by ?

1. Oxidation
2. Hydrogenation
3. Fermentation
4. Reduction

A

Question 8: Acetanide is prepared by ?

1. Heating methyl cyanide
2. Heating ammonium acetate
3. Ethyl acetate
4. Acetic anhydric

B

Question 9: The solution of which acid is used for seasoning of food ?

1. Acetic acid
2. Benzoic acid
3. Formic acid
4. Butanoic acid

A

Question 10: Which of the following is not a fatty acid ?

1. Acetic acid
2. Phthalic acid
3. Propanoic acid
4. Butanoic acid

B

Question 11: Acetic acid is manufactured by ?

1. Ozonolysis
2. Fermentation
3. Esterification
4. Distillation

B

Question 12: Which one of the following amino acid is basic ?

1. Alanine
2. Proline
3. Lysine
4. Valine

C

Question 13: Which one of the following is not a fatty acid ?

1. Acetic acid
2. Butanoic acid
3. Propanoic acid
4. Phthalic acid

D

Question 14: The nature of alanine is ?

1. Basic
2. Neutral
3. Acid
4. Weekly acid

B

Question 15: Which of the following derivative can’t be prepared directly from acetic acid ?

1. Ethyl ethanoate
2. Acetamide
3. Acetyl chloride
4. Acetic anhydride

B

Question 16: Reverse of esterification is known as ?

1. Neutralization
2. Saponification
3. Transesterification
4. Hydrolysis

D

Question 17: Hydrolysis of nitrites with alkaline solution gives ?

1. Esters
2. Cyanides
3. Carboxylic acid
4. Amides

C

12th Class Chemistry MCQs chapter 14 Macromeloecules Punjab Board

Question 1: The non-protein part of enzyme is called ?

1. Apo enzyme
2. Co-enzyme
3. Substrate
4. Activator

B

Question 2: Starch is a polymer of ?

1. α-D-glucose
2. Sucrose
3. Fructose
4. Lactose

A

Question 3: The reaction between fat and NaOH is called ?

1. Saponification
2. Fermentation
3. Hydrogenlysis
4. Esterification

A

Question 4: Which of these polymer is an synthetic polymer ?

1. Terylene
2. all of these
3. Polystyrene
4. Nylon 6, 6

B

Question 5: The fiber which is made form acrylonitrile as monomers ?

1. PVC
2. Acrylic fiber
3. Rayon fiber
4. Polyester fiber

B

Question 6: A polymeric substance that is formed in the liquid state and then hardened to a right solid is called a ?

1. Fiber
2. Polyamide resin
3. Varnish
4. Plastic

D

Question 7: Which one of the following enzymes brings about the hydrolysis of fats ?

1. Urease
2. Zymase
3. Lypase
4. Maltase

C

Question 8: Which of these polymers is an addition polymer ?

1. Nylon 6, 6
2. Epoxy resin
3. Polysterene
4. Terylene

C

Question 9: The formula of cholesterol is ?

1. C₂₃H₄₆O
2. C₂₀H₃₀O
3. C₂₇H₄₆O
4. C₂₅H₄₈

C

Question 10: Which one of the following compounds is not of a polymer ?

1. Glucose
2. Protein
3. Starch
4. Nylon 6, 6

A

Question 11: A long thin, thread like structure is called ?

1. Paint
2. Fiber
3. Varnish
4. Plastic

B

Question 12: Chose the polymer which is obtained by condensation polymerization ?

1. Polyester
2. Poly styrene
3. Polyvinyl chloride
4. Polyvinyl acetate

A

Question 13: Which one of the following is a water soluble vitamin ?

1. A
2. C
3. E
4. D

B

Question 14: Which one of the following elements is not present in all proteins ?

1. Sulphur
2. Hydrogen
3. Nitrogen
4. Carbon

A

Question 15: Sugar becomes black when conc. H₂SO₄ is added to it. It is due to ?

1. Hydration
2. Dehydration
3. Decolourization
4. Hydrolysis

B

Question 16: The degree of unsaturation of oil and fat is measured by ?

1. Octane number
2. Acid number
3. Saponification number
4. Iodine number

D

Question 17: The amount of free fatty acid in fast and oil is determined by ?

1. Acid number
2. Iodine number
3. Saponification number
4. Gold number

A

12th Class Chemistry MCQs Chapter 15 Common Chemical Industries in Pakistan Punjab Board

Question 1: Which of the following fertilizers, contains 75% nutrient ?

1. DAP
2. TAP
3. NH₄NO₃
4. Urea

A

Question 2: The percentage of gypsum in the cement is ?

1. 1 – 2%
2. 3 – 4%
3. 2 – 5%
4. 2 – 3%

C

Question 3: Setting process of cement is based upon ?

1. Oxidation
2. Dehydration
3. Hydration
4. Hydrolysis

C

Question 4: How many zones though which the charge passes in rotary kiln ?

1. 2
2. 5
3. 3
4. 4

D

Question 5: Prilling is a process in which ?

1. Concentration of urea is increased
2. Some other ingredients are added to urea
3. Water is removed from urea
4. Molten urea is converted to solid drops

D

Question 6: Which one of the following is calcarious material ?

1. Blast furnace slag
2. Shale
3. Marine shell
4. Clay

C

Question 7: Which fertilizer is the source of phosphorus for plants ?

1. Noshader
2. Murate of Potash
3. Calcium super phosphate
4. Urea

C

Question 8: Which woody raw material is used for the manufacture of paper pulp ?

1. Poplar
2. Rice strain
3. Bagasse
4. Cotton

A

Question 9: Which of the following is main process in paper industry ?

1. Stock preparation
2. Bleaching
3. Digestion
4. Screening

C

Question 10: Potassium fertilizers are especially useful for ?

1. All of these
2. Potato
3. Coffee
4. Tobacoo

A

Question 11: The macronutrients are required in ranging from ?

1. 1 – 100 kg
2. 5 – 200 g
3. 5 – 200 kg
4. 6 – 200 g

C

Question 12: Which substance is used to bleach the pulp ?

1. NaCl
2. NaOH
3. Na₂SO₃
4. NaClO

D

Question 13: Newspapers can be recycled how many times ?

1. 7
2. 5
3. 3
4. 2

B

Question 14: Which one of the following raw materials is not present in the cement ?

1. Blast furnace slag
2. Limestone
3. Red lead
4. Gypsum

C

Question 15: The composition of rock phosphate is ?

1. Ca(H₃ PO₄)₂
2. CaH₃PO₄
3. Ca₃(PO₄)₂
4. Ca₃(PO₄)CaF₂

C

Question 16: The most widely used nitrogen fertilizer in Pakistan is ?

1. Ammonium nitrate
2. Urea
3. Ammonium sulphurate
4. Ammonium

B

Question 17: Which of the following is not common domestic materials which are recycled ?

1. Paper
2. Glass
3. Iron
4. Plastics

C

12th Class Chemistry MCQs Chapter 16 Environmental Chemistry Punjab Board

Question 1: What is thickness of ozone layer ?

1. 1 km only
2. 25 – 28 km
3. 5 m only
4. 30 – 60 km

B

Question 2: What is the thickness of atmosphere ?

1. 1000 km
2. 1500 km
3. 100 km
4. 500 km

A

Question 3: The main pollutant of leather tanneries in the waste water is due to the salt of ?

1. Lead
2. Copper
3. Chromium (VI)
4. Chromium (III)

C

Question 4: Peroxyacety nitrate (PAN) is an ioritant to human beings and it affects ?

1. Eyes
2. Stomach
3. None
4. Ear

A

Question 5: The pH of acid rain is ?

1. 6 – 5.6
2. 7 – 6.5
3. 6.5 – 6
4. Less than 5.6

D

Question 6: How much fresh water is used for domestic purpose ?

1. 8%
2. 100%
3. 69%
4. 23%

A

Question 7: A single chloride free radical can destroy how many ozone molecules ?

1. 100
2. 10
3. 100,000
4. 10.000

C

Question 8: Which one of the following is not a pollutant ?

1. SO₂
2. CO₂
3. NO₂
4. CO

B

Question 9: The combination of smoke and fog is called ?

1. Smog
2. Secondary pollutant
3. Coagulation
4. Primary pollutant

A

Question 10: Ecosystem is a smaller unit of ?

1. Atmosphere
2. Lithosphere
3. Hydrosphere
4. Biosphere

D

Question 11: The smog which has high contents of SO₂ in it is called ?

1. Reducing smog
2. Oxidizing smog
3. Neutral smog
4. Natural smog

A

Question 12: The normal amount of overhead ozone is about ?

1. 345 DU
2. 350 DU
3. 335 DU
4. 340 DU

B

Question 13: The yellowish colour in photochemical smog is due to the presence of ?

1. NO₂
2. NO
3. SO₂
4. CO₂

A

Question 14: In purification of potable water the coagulant used is ?

1. Copper Sulphate
2. Barium sulphate
3. Nicke sulphate
4. Alum

D

Question 15: Fungicides are the pesticides which ?

1. Kill plants
2. Kill herbs
3. Kill insects
4. Control the growth of fungus

D

Question 16: In which layer of atmosphere, ozone is present ?

1. Stratosphere
2. Mesosphere
3. Troposphere
4. Thermosphere

A

Question 17: To avoid the formation of toxic compounds with chlorine which substance is used for disinfecting water ?

1. Chloramines
2. Alums
3. O₃
4. KMnO₄

C

12th Chemistry MCQs Chapter 1 to 8

12th Chemistry MCQs Chapter 9 to 16