CHM203 List of eExam Questions in the Bank

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Q1 The amount of substance dissolved in a certain amount of solvent is referred to as _.

Q2 The type of tautomerism which involves a shift in interatomic distance within a molecule, without the separation of any atom from the rest of the molecule , as an intermediate stage is called _.

Q3 Solubility of branched isomers is than that of straight chain isomers

Q4 Branched chain hydrocarbons have lower than their straight chain isomers.

Q5 Unbranched isomer has higher than branched isomer

Q6 The extent to which acids transfer a proton to a standard base determines _.

Q7 The definition of an acid as a proton donor was given by _.

Q8 Two factors that affect the boiling point of a substance are and _.

Q9 A change in molecular structure which affect the reactivity of the molecule by changing the electron distribution is called

Q10 The stronger the acid, the smaller the _.

Q11 Hydrogen no - bond resonance is otherwise called _.

Q12 The influence of the inductive effect on acid strength is almost negligible after the carbon in the chain.

Q13 The method of reduction of the carbonyl group of ketone produced by Friedel - craft is _.

Q14 The reaction of aromatic compounds with alkyl halide in the presence of anhydrous $$AlCl_{3}$$ as catalyst is called _.

Q15 The backbone of an organic molecule is _.

Q16 Cyclohexane has fewer hydrogens than n-hexane.

Q17 The rule that states that in a dehydrohalogenation reaction of alkyl halides, the major product will be the product that has the more alkyl groups attached to the resultant carbon - carbon double bond is rule.

Q18 E2 elimination reaction can also be referred to as reaction.

Q19 The dehydrohalogenation of alkyl halides yields _.

Q20 A side reaction that occurs during substitution reactions of alkyl halides is

Q21 The reaction in which aryl halides are formed from aromatic amines is called _.

Q22 Oxidation of naphthalene under controlled condition yields

Q23 Fused benzenoid hydrocarbons with two benzene rings is _.

Q24 Fused benzenoid hydrocarbon with three benzene rings is .

Q25 In keto-enol tautomers, the tautomer that predominates is _.

Q26 Tautomers which differ from each other only in the location of a hydrogen atom and a double bond are called _.

Q27 In keto-enol tautomers, the tautomer that is more stable is _.

Q28 In terms of aromatization, naphthalene has π electrons

Q29 Naphthalene has number of resonance hybrid structures

Q30 Reduction of benzene using Nickel at 425-525K and 25atm yields _.

Q31 The condition for reduction of benzene is or

Q32 Reduction of benzene is by of benzene.

Q33 The reagent for nitration of benzene is _.

Q34 The major product in the nitration of nitrobenzene is

Q35 Nitration of nitrobenzene yields .

Q36 Isomers which are related to each other with the actual movement of electrons as well as one or more atoms and can reversibly be interconverted are called

Q37 In terms of steric effect, conformational isomer is more stable.

Q38 In terms of steric effect geometric isomer is more stable.

Q39 Types of conformational isomers are and _.

Q40 The types of geometric isomers are trans and _.

Q41 The effect arising from the spatial interactions between the groups in a compound is called _.

Q42 Hyperconjugation is also known as

Q43 Inductive effect is a type of effect

Q44 Chloro compounds can be used in manufacturing of _.

Q45 The reaction of ethanal with phosphorus pentachloride yields _.

Q46 Tertiary alkyl halides undergo substitution by mechanism

Q47 On the basis of the mechanism of substitution reactions, nucleophilic substitution reaction can be divided _.

Q48 The type of dihalides in which the two halogens atoms are attached to adjacent carbon atoms is called _.

Q49 Chlorination of ethene yields _.

Q50 The type of dihalides in which both halogens are attached to the same carbon atoms is called _.

Q51 The halogen derivatives of aromatic compounds are

Q52 The reaction between benzene and acetyl chloride (acid halide ) in the presence of aluminium trichloride yields _.

Q53 Ortho, Para and meta-direction are effects of _.

Q54 Molecular structure, London forces, Polarity of a compound and Hydrogen bonding are factors that affect

Q55 An important intermolecular force

Q56 The actual molecule or ion of a covalent molecule with more than one lewis structure is called _.

Q57 The lewis structure of a covalent molecule are otherwise called _.

Q58 The phenomenon of the transmission of charge through a chain of atoms linked by δ-δ bonds is called _.

Q59 A change in molecular structure can occur as a result of _.

Q60 The acidic and basic properties of molecules are influenced by and

Q61 The symbol of resonance is ------------.





Q62 The process by which benzene and its derivatives are extracted from petroleum is called ------------





Q63 The presence of an aromatic ring in a compound is detected by ------------.





Q64 The cannonical forms of benzene were proposed by ?





Q65 The decreasing order of basicities is:





Q66 The substitution of an acyl group into an aromatic ring by the reaction with an acid chloride in the presence of Lewis acid is called -----------------.





Q67 There are ---------- resonance structures of benzene





Q68 The method of reduction of the carbonyl group of ketone produced by Friedel -crafts acylation is ------------ reduction.





Q69 Sulphonation of benzene yields ----------------.





Q70 The reaction of aromatic compounds with alkyl halide in the presence of anhydrous $$ AlCl_{3}$$ as catalyst is called --------------





Q71 The number or π-electrons in benzene is?





Q72 The stronger an acid the ---------------- is its conjugate base





Q73 Down the group, electronegativity ------------------.





Q74 The parent compound of polynuclear hydrocarbons is ---------.





Q75 A benzenoid hydrocarbon in which two benzene rings are fused together at the ortho position is called ----------. <





Q76 The benzenoid hydrocarbons in which two or more benzene rings are fused together at ortho position in such a way that each pair of rings shares rings shares two carbons are called ---------- benzenoid hydrocarbon.





Q77 An example of Isolated Benzenoid Hydrocarbon is -------------.





Q78 The catalyst usually employed in Friedel-Craft acylation is -------.





Q79 The preparation of aryl halides which involves the aromatic ammine first being converted to diazonium salt and then to aryl halide uisng solution of cuprous halide dissolved in concentrated halogen acid is called ---------.





Q80 In electrophilic addition to alkenes, the electrophilic attack is on ---------.





Q81 Another name for methyl benzene is __________.





Q82 In the hydrogenation of benzene,the condition for reaction is ______.





Q83 Hydrogenation of benzene at higher temperature and under pressure yields -------





Q84 All these are electron donating groups with respect to reactivity and orientation EXCEPT _______





Q85 The E2 reactions of alkyl halides are favoured by the use of ---------.





Q86 In the preparation of trichloromethane by chlorination of methane in the presence of nitrogen, the catalyst required is ----------.





Q87 Bleaching powder provides chlorine which oxidizes ethanol to _________.





Q88 The reaction of grignard reagent and aldehyde other than methanal followed by decomposition of the addition product with a dilute acid gives --------------.





Q89 For halogen derivatives of aromatic compounds, boiling point ---------- with increase in atomic size of the halogen atom.





Q90 The carbon-halogen sigma bond in alkyl halide results through overlap of the ------- hybrid orbital with the p orbital of the halogen atom.





Q91 Chlorination of ethene at high temperature yields ---------.





Q92 The compounds formed when hydrogen halides react with alkenes are ------------.





Q93 The most widely used method for the preparation of alkyl halides is from ________.





Q94 The halogen derivative of aromatic compounds in which two halogen atoms are attached to adjacent carbon atom is called ______.





Q95 The halogen derivative of aromatic compounds in which two halogen atoms are attached to the same carbon atom is called ---------.





Q96 The energy difference between the expected value of heat evolved when hydrogen is added to benzene and the experimental heat value is called ----------------.





Q97 A compound in which a halogen atom is attached to another carbon atom by a double bond is called -----.





Q98 The number of classes to which halogen derivatives of aromatic compounds could be classified based on the nature of the hydrocarbon residue to which the halogen atom is attached is------------.





Q99 The expression relating pKa and pH is known as --------- equation.





Q100 The molecular reactivity of a substance depends on -----------.





Q101 Induced dipole - induced dipole interactions are also called ---------.





Q102 Increase in melting point as a result of increase in molecular weight is due to ----------.





Q103 Pure crystalline solids have ------------- melting points.





Q104 Dipole - dipole interactions and induced dipole -induced dipole interactions are collectively called -----------.





Q105 A substance which ionises to produce hydroxide ions is called -----------.





Q106 A benzene ring is a ---------- system.





Q107 With respect to solubility, the more soluble isomer is the------------ isomer.





Q108 Increase in intermolecular forces results in ---------- solubility.





Q109 The process by which a substance dissolves in a solvent and its constituent ions get separated from each other is called ------------.





Q110 The properties of a solvent which measures its ability to separate the ions of the solute is --------.





Q111 All these affect boiling points except ----------.





Q112 A chief source of benzene and its derivatives is ------------.





Q113 The point at which the vapour pressure of a liquid is equal to external pressure is called -----------.





Q114 The heating of toluene and hydrogen under pressure in the presence of a metal catalyst yields -------------.





Q115 Geometric isomerism yields ------------- isomers





Q116 The geometric isomer that has higher melting point is -------- isomer.





Q117 The interactions that exist between non polar molecules is called ----------.





Q118 London forces, hydrogen bonding, and dipole-dipole interactions are ---------.





Q119 The (4n + 2)pie-electron is -------- rule .





Q120 The simplest aromatic compound is called -----------.