Class 12 Chemistry Model Paper 3 MCQ Test

ByMuhammad Zaman June 26, 2022October 28, 2022

FBISE Federal Board Class 12 Chemistry Model Paper 3 MCQ Test. Do as much practice as you can so that you get good marks in the final exams.

Chemistry Model Paper 3 MCQs Test

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103

Class 12 Chemistry
Model Paper 3
Practice MCQs Test

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1. Label the element in the first series of outer transition elements that has highest binding energy.

Vanadium

Chromium

Manganese

Titanium

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2. Li₂CO₃ is thermally unstable whereas other Group-I carbonates are stable. Predict the reason.

Li has low ionization potential

Li⁺ cannot effectively polarize CO₃^-2+ ion

Li⁺ can effectively polarize CO₃^-2+ ion

Li is less electropositive

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3. Predict which one of the following substances is used as film forming agent in nail polish?

Ethyl acetate

Glycerol

Butyl stearate

Nitrocellulose

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4. Predict the product of acid hydrolysis of CH₃ - C ≡ C - CH₃ in the presence of HgSO₄ catalyst.

Propanal

2-Butanol

Acetaldehyde

Butanone

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5. Identify the functional group present in the Anhydride.

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6. The mass spectrum of Magnesium shows that it contains three isotopes. Mg-24 (78.70%), Mg-25 (10.13%) & Mg-26(11.17%). The average atomic mass of Mg is:

26.32 amu

27.32 amu

24.32 amu

25.32 amu

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7. Identify the most reactive Alcohol with respect to the breakage of O-H bond.

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8. What is the IUPAC name of alkene which will give propanone and propanal on Ozonolysis?

2-Methyl-2-Butene

2-Pentene

2-Butene

2-Methyl-2-Pentene

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9. What is the name of Grignard Reagent that will give 2,2-Dimethyl Propanoic Acid on reaction with CO₂?

Neo-Butyl Magnesium Bromide

n-Propyl Magnesium Bromide

N-Butyl Magnesium Bromide

Iso-propyl magnesium Bromide

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10. Amines are basic in nature. Identify which one of the following is more basic?

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11. Identify the nature of the ligand:

Monodentate

Bidentate

Tridentate

Hexadentate

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12. Predict which maltose is the disaccharide of:

Galactose & Fructose

Glucose & Fructose

Glucose only

Galactose only

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13. Propose the types of Isomerism shown by 1-Butanol.

Chain isomerism & Functional group isomerism

Chain isomerism, Position isomerism & Functional group isomerism

Chain isomerism & Position isomerism

Position isomerism, Functional group isomerism & Metamerism

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14. Identify the name of the compound which will give acetamide on heating?

Ethyl Nitrile

Ammonium Acetate

Ethyl Diazonium Chloride

Ethyl amine

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15. Identify which one of the following water pollutant is Carcinogenic?

Mineral acids

D.D.T

Polycyclic hydrocarbons

Nitrate fertilizers

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16. When secondary alcohol reacts with NaOH to produce yellow ppt, it is called:

Benedict test

Iodoform test

Lucas test

Toulen test

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17. Predict the decomposition product which will give brown colored gas:

Mg(NO₃)₂

Na₂SO₄

BaCO₃

CaSO₄

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