(12th) Chemistry Model Questions 2024(Part-2)

1. The oxidation number of Fe in K3[Fe(CN)6] is

• (A) 6
• (B) 4
• (C) 3
• (D) 2
• option3
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2. All ligands are

• (A) Lewis acids
• (B) Lewis bases
• (C) Neutral
• (D) None of these
• option1
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3. The structure of [Ni(CN)4] 2- is

• (A) Linear
• (B) Tetrahedral
• (C) Square planar
• (D) Octahedral
• option3
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4. Vitamin B-12 contains

• (A) Cobalt
• (B) Magnesium
• (C) Iron
• (D) Nickel
• option1
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5. Which of the following has zero dipole moment ?

• (A) CH3Cl
• (B) CHCl3
• (C) CHI3
• (D) CCl4
• option4
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6. Which of the following is a gemdihalide ?

• (A) CH3CHBr2
• (B) CH2Br-CH2Br
• (C) CH3CHBrCH2Br
• (D) CH3CHBrCH2CH2Br
• option1
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7. From which of the following, chloroform is formed ?

• (A) Methanol
• (B) Methanal
• (C) Propan-1-ol
• (D) propan-2-ol
• option4
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8. Alkyl halides are used for the preparation of which of the following ?

• (A) Alkane
• (B) Alkene
• (C) Alcohol
• (D) all of these
• option1
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9. Which of the following represents secondary alcohol ?

• (A) –CH2OH
• (B) >CHOH
• (C)>C - OH
• (D) none of these
• option3
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10. Grain alcohol is the common name of which of the following ?

• (A) Amyl alcohol
• (B) Ethyl alcohol
• (C) Methanol
• (D) None of these
• option2
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11. Which of the following forms alkane on reaction with Grignard reagent?

• (A) CH3CH2OH
• (B) CH3CHO
• (C) CH3COCH3
• (D) HCHO
• option1
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• A
• B
• C
• D
• option2
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13. An aldehyde on oxidation gives

• (A) an alcohol
• (B) an acetone
• (C) an ether
• (D) an acid
• option4
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14. Which of the following doesn’t give Cannizzaro’s reaction ?

• (A) Trimethyl acetaldehyde
• (B) Acetaldehyde
• (C) Bengaldehyde
• (D) Formaldehyde
• option2
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15. Urotropine is formed by the reaction of ammonia with which of the following ?

• (A) Acetaldehyde
• (B) Formaldehyde
• (C) Acetone
• (D) Phenol
• option2
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16. Which of the following formula represents an ester ?

• (A) RCOOH
• (B) RCOOR
• (C) RCOR
• (D) ROR
• option2
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17. Formic acid and Formaldehyde can be distinguished by which of the following ?

• (A) Benedict’s solution
• (B) Tollen’s reagent
• (C) Fehling’s solution
• (D) NaHCO3
• option4
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18. Which of the following is the strongest acid ?

• (A) CH3COOH
• (B) ClCH2COOH
• (C) Cl2CHCOOH
• (D) Cl3C.COOH
• option1
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19. Which of the following is a strong reducing agent ?

• (A) Ethanoic acid
• (B) Benzoic acid
• (C) Methanoic acid
• (D) Chloroacetic acid
• option4
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20. By which of the following carboxylic acids can be directly Recuced into alcohol ?

• (A) LiAlH4
• (B) Na+C2H5OH
• (C) NaBH4
• (D) H2
• option1
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• A
• B
• C
• D
• option2
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22. The molecular formula of methylisocyanate is

• (A) CH3NCO
• (B) CH3CNO
• (C) CH3NCS
• (D) CH3CN
• option1
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23. Which of the following gives primary amine on hydrolysis ?

• (A) Nitroparaffin
• (B) Alkylcyanide
• (C) Amide
• (D) Alkyl isocyanide
• option4
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24. The hybridization of nitrogen in amines is

• (A) sp
• (B) sp2
• (C) sp3
• (D) dsp2
• option3
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25. Sucrose on hydrolysis gives

• (A) Only glucose
• (B) Glucose and Glactose
• (C) Glucose and Fructose
• (D) Glucose and Lactose
• option3
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26. Ascorbic acid is

• (A) a vitamin
• (B) an enzyme
• (C) a protein
• (D) an amino acid
• option1
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27. Which of the following is responsible for the heredity character of cell?

• (A) RNA
• (B) DNA
• (C) Protein
• (D) Harmones
• option2
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28. Soaps are

• (A) Carbohydrates
• (B) Ethers
• (C) Salts of fatty acids
• (D) None of these
• option3
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29. Which of the following is a natural polymer ?

• (A) Protein
• (B) Polythene
• (C) Buna-S
• (D) Bakelite
• option1
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30. An example of copolymer is

• (A) Nylon-6
• (B) Nylon-6, 6
• (C) Poly methyl methyl acrylate (PMMA)
• (D) Polythene
• option2
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31. A product of condensation polymer is

• (A) Polythene
• (B) PVC
• (C) Teflon
• (D) Nylon-6, 6
• option4
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32. Which of the following is used as an antipyretic ?

• (A) Paracetamol
• (B) Chloroquine
• (C) Chloramphenicol
• (D) LSD
• option1
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33. An antibiotic used for the treatment of typhoid is

• (A) Pencillin
• (B) Chloramphenicol
• (C) Tetramycin
• (D) Sulphadiazine
• option2
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34. The poisonous gas evolved in Bhopal tragedy is -

• (A) N2
• (B) CH3NCO
• (C) CH3CN
• (D) CO2
• option2
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35. Gammexane is

• (A) Chlorobenzene
• (B) DDT
• (C) Benzene hexachloride
• (D) None of these
• option3
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