Class 12 Chemistry 2021 Overseas MCQs Test

ByMuhammad Zaman June 27, 2022October 28, 2022

FBISE Federal Board Class 12 Chemistry 2021 Overseas MCQs Test. Do as much practice as you can so that you get good marks in the final exams.

Class 12 Chemistry MCQs Tests

2021 Overseas MCQs Test

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Class 12 Chemistry
Paper 2021 Overseas
Practice MCQs Test

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1. The carbonates of Alkali metals are NOT affected by heat except:

Li₂CO₃

K₂CO₃

Na₂CO₃

Rb₂CO₃

2 / 17

2. Williamson's synthesis of ethers is superior of Alcohols because it makes:

Asymmetrical ethers

Symmetrical ethers

Both symmetrical and Asymmetrical ethers

Ethers at room temperature

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3. Which of the following adhesives are also known as Bio adhesives?

Drying adhesives

Synthetic adhesives

Natural adhesives

Hot glue

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4. In Wolff-Kishner reduction (Basic) conditions of Aldehydes and Ketones, the catalyst used is:

N₂H₄ / HCl

N₂H₄ / KOH

N₂H₄/ H₂SO₄

Zn – Hg

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5. The compounds which are used as alternatives to chlorofluorocarbons (CFCs) are:

Aromatic compounds

Phenols

Hydrocarbons

Hydrofluoroalkanes

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6. Complete the reaction: 3Ca + N₂ → ______

Ca₃N

Ca₂N₃

CaN₂

Ca₃N₂

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7. Which of the following elements has the maximum electron affinity?

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8. The component of Blood that carries oxygen in the body is:

Myoglobulin

Hemoglobin

Fats

Amino Acid

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9. Benzoic acid is obtained by the oxidation of:

m-Xylene

Phenol

p-Xylene

Toluene

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10. Which of the techniques does NOT involve the absorption of radiations?

Mass Spectroscopy

U.V Spectroscopy

NMR Spectroscopy

IR Spectroscopy

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11. The common reference standard taken in Nuclear magnetic resonance spectroscopy is:

Tetra chloromethane

TriIodomethane

Tetra methyl Silane

Tetrafluoromethane

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12. The function group given below represents the family of organic compounds called:

Carboxylic Acids

Esters

Ketone

Alcohols

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13. Reaction between caustic soda and fats is called:

Hydrogenation

Esterification

Saponification

Neutralization

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14. IUPAC name of Succinic acid is:

Butanoic acid

Butenedioic acid

Pentanoic acid

Butanedioic acid

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15. The catalyst(s) used to oxidize SO₂ to SO₃ in the manufacturing of H₂SO₄ by contact process is/are:

V₂O₅

ZnO and Cr₂O₃

Al₂O₃

Ni and Pt

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16. Ethanoic Acid reacts with SOCl₂ in presence of pyridine to give:

Ethyl Chloride

Ethanoyl Chloride

Ethane

Ethene

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17. Which of the following Alkyl Halides cannot be formed by direct reaction of Alkanes with halogens?

R – Br

R – F

R – I

R – Cl

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One Comment

Khadim awan says:
April 13, 2024 at 5:21 am
It is very interesting.We can prepare our Mcqs at home.I an very thankful to the owner of this website.
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