Not yet checked 1 of 8 questions have not yet been compared with the official paper.
Q. 1
(a)Differentiate between (1) Conjugation and hyper conjugation (2) Covalent bond and hydrogen bond (3) Localized and delocalized bond (4) Resonance effect and Inductive effect (5) Inter and Intra molecular hydrogen bonding. [10]
(b)Compare the basicity of (1) aniline and amine, (2) Primary, secondary and tertiary alcohol and acidity of (1) phenol and alcohol (2) Flourochloro and bromo acetic acid (3) 1-chloro, 2-chloro and 3-chloro butanoic acid. [10]
(20)
Q. 2
(a)Write short notes on the following:
(b)Discuss the principle of IR spectroscopy. How will you distinguish between following pairs of compounds on the basis of IR spectroscopy: Ethyle alcohol and diethyl ether Acetic Acid and Ethyle acetate [12]
Not yet checked
(20)
Q. 3
(a)How will you prepare the following compounds starting from alcohol? Pentanal 2-Butanone 3-pentanone Cyclohexanone Benzyl Isopropyl ketone 2,2 dimethyl 2-pentanone [12]
(b)Write the expected products of aldol condensation between: Acetaldehyde and formaldehyde Acetaldehyde and acetone [8]
(20)
Q. 4
(a)How aromatic compounds are being prepared by following methods: Wurtz-Fitting method Friedel-Crafts reactions [10]
(b)Discuss the following electrophilic reactions of Benzene: Halogenation Nitration Sulphonation [10]
(20)
Q. 5
(a)What are Lipids? How you can classify them. Discuss their importance. [10]
(b)What are Proteins? Discuss the structure and general properties of proteins. [10]
(20)
Q. 6
(a)Explain the difference between: (1) Stationary phase and mobile phase (2) Retention time and retention volume (3) Adsorption and partition chromatography (4) Liquid liquid chromatography and liquid solid chromatography. [16]
(b)How the Thin layer chromatography is performed? [4]
(20)
Q. 7
(a)What are semi-conductors? How they can be classified? [10]
(b)What is PET? Discuss its manufacturing and applications. [10]
(20)
Q. 8
(a)Discuss Inorganic Pigments in detail. [8]
(b)Define Detergents. Discuss the classification of Detergents. [12]
The 2022 PMS Punjab Chemistry paper set by the PPSC. Question wording only; questions marked “Not yet checked” have not been compared with the official paper yet.
Disclaimer Prep Right is independent and not affiliated with PPSC.