PPSC Chemistry Part II Organic Chemistry Online Test With Answers

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PPSC Chemistry Part II Organic Chemistry Online Test

Sr. # Questions Answers Choice
1 Which of the following reaction cannot be used for the synthesis of a amino acids. Gabriel phthalimide Streckers synthesis Sorensen synthesis Schmidt synthesis
2 In the presence of dilute alkali monosaccharides undergo reversible isomerisation . The reaction known as. Kiliani reaction Weermann rearrrangement Lobry do Bruyn Van Ekenstein rearrangement Mutarotation
3 Glucose and fructose react with which of the following reagent to give same product. Tollen's reagent Phenyl hydrazine Hydroxyl amine All of these
4 Which of the following is not a polysaccharide Cellobiose Cellulose Insulin Amylase
5 Carbohydrates are characterized by the presence of. Hydroxyl group Carbony group Asymmetric carbon All of these
6 Homolytic fission of convalent bond results in the formation of. Free redicals Carbocations Carbonions Both B and C
7 Which of the following equations represent linear free energy relationship. Hammett equation Taft equation Helmholtz equation Differential equation
8 Which of the following statement is not correct with respect to limitations of Hammett equation. It is only applicable to aromatic systems Only applicable to aliphatic systems It is not valid for m-substituent
9 Which of the following statements is not correct with respect to applications of Hammett equations. It develops a quantitative relationship between structure and reactivity This equation on can be used to calculate the value of pK<sub>a</sub> This equation does not help to calculate the rate of some reactions This equation has mechanistic implications
10 The equation which relates the reaction rates and equilibrium constants of many reactions is known as. Taft equation Hammett equation Differential equation Linear equation
11 Which of the following haloacids is stronger acids. FCH2COOH ClCH2COOH Br CH2COOH ICH2COOH
12 Which of the following groups exert -1 effect. - NO2 - CN -COOH &lt;C = 0
13 Which of the following factors effect the strengths of acids and bases. Inductive effect Romance effect Hydrogen effect All above
14 Which of the following statements not correct with the concept of Bronsted concept of acids and bases. An acid can donate a proton A base can accept a proton This concept has many bases that have OH- ions This concept is more general
15 Which of of the following statement is not correct in respect of
Arrhenius concept.
 This concept is applicable only for aqueous systems. Neutralization takes place in aqueous medium only H+ ion concept remain as such in water This concept is applicable for non aqueous system only.
16 Inorganic acids (HCl, HBr, HNO3 etc) have K value. &lt; 1 &gt;1 &gt;10 &lt;10
17 Which of the following statements do not represent Lewis idea of acids and base? Compounds which have completely filled orbitals Compounds which have incompletely filled orbitals Compounds in which the central atom can expand its octel All simple metal ions like Ag+, Al3+ etc.
18 Which of the following does not represent Lewis base. Pyridine NaNH2 PCl3 NaOH
19 Which of the following does not represent Lewis acid. ZnCl2 FeCl2 BF3 Bul4
20 Which of the following pairs does not represent Lowery acid base pair. H2O+NH3 H2O +H2O HCL + H2O CH3NH2 + BF3
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