MDCAT Chemistry Online Test With Answers

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MDCAT Chemistry Online Test

Sr. # Questions Answers Choice
1 2,5-dimethyl-1-hexene has Two sp2 hybridized carbons Six sp2 hybrid carbons Two double bonds Four pi electrons
2 The angle between the unhybridized 2pz orbital and the three sp2 hybrid orbitals in ethene is 180° 120° 90° 60°
3 Substituted phenyl group are called Arene groups Alkyl groups Aryl groups Acyl groups
4 Which of the following is not an electrophilic substitutional reaction of benzene? Free radical chlorination of benzene Friedel Craft alkylation Sulphonation Nitration
5 Aniline is the derivative of the benzene containing the Hydroxyl group Amino group Amido group Imido group
6 Benzene cannot undergo the ------- directly Substitution reaction Addition reaction Oxidation reaction Elimination reaction
7 Which of the following tests helps to distinguish between alkyne and alkene? Lucas test Tollen's reagent test Baeyer's test Fehling's solution test
8 When 1-butene reacts with bromine, the product formed will be 1, 3-dihydroxy butane But-1, 2-diol 1, 3-dihydroxy butan-diol 1,2-dibromo butane
9 2-Propenol, on rearrangement, yields Propanal Propanone 2-propano Both A and B
10 Ethene is produced from ethyl chloride by reacting with alcoholic KOH. The process is called Hydrogenation Dehydrogenation Dehydrohalogenation Oxidation
11 Which of the following is electrophile for alkylation? NO+2 SO3 R+ Both a & b
12 Addition of unsymmetrical reagent to an unsymmetrical alkene is governed by Cannizzaro's Reaction Aldol Condensation Kirchhoff Rule Markownikov's Rule
13 The substitution of a'-H' by '-NO2' group in benzene is called Nitration Sulphonation Ammunolusis Reduction of benzene
14 Benzene in the presence of AICl3 produces acetophenone when reacts with AcetyI chloride EthyI benzene Acetic acid Ethanoic acic
15 Benzene has pi electron 2 4 6 8
16 Among the following the polycyclic aromatic compound is Styrene Naphthalene Toluene Acetophenone
17 Which af the following compound reacts slower than benzene in the electrophilic substitution. Phenol Nitrobenzene Toluene Aniline
18 Naphthalene has two fused aromatic ring of carbon atom the molecular formula C10H8 C10H14 C10H10 C12H12
19 The pi-electrons in the styrene are 13 10 8 6
20 C-H bond length in the benzene is 0.99A° 1.09A° 1.12A° 1.34A°
21 During the nitration of benzene the nitrating agent is NO3 NO2+ NO2- HNO3
22 Ethylene polymerizes at 100 atm pressure and 400 °C to give Polybenzene Polypropylene Polyalcohol Polyethylene
23 The compound used to distinguish the ethyne and ethene is Alkaline KMnO4 Ammonical AgNO3 Bromine water Tollen's Reagent
24 Baever's reagent is misture of HCI& ZnCl Ageous bromine Alkaline KMn4 Mix of Br2&KMnO4
25 Dehydrohalogenation of alkyl halides happens in the presence of Pd Ni Zn KOH/alcohol
26 The heat of hydrogenation of most of the alkene is about 120 kJ/mol 100 kJ/mol 140 kJ/mol 105 kJ/mol
27 Which one of the following is a powerful electrophile used to attack on the electrons of benzene ring? FeCl2 Cl+ FeCl-4 Cl2
28 Which class of compound cannot show positional isomerism? Alkanes Alkene Alkynes Alcohol
29 How many esters are possible for C2H8O2 3 2 4 5
30 Alkanes do not show geometrical isomerism due to Hyperconjugation Resonance Rotation around single hond Restricted rotation around doubled bond
31 Total number of possible chain and positional isomers of butyl alcohol among alcohols are Four Five Two Six
32 Which of the following compounds does not exhibit positional isomerism? Alkynes Nitroalkanes Carboxylic acid Alcohol
33 The isomerism in which the compounds differ with respect to functional group but have same molecular formula is called Metamerism Functional group isomerism Position isomerism Chain isomerism
34 Anthracene contains number of fused benzene rings 1 2 3 4
35 Pyridine is an example af Homocyclic compound Heterocyclic compound Carbocyclic compound Aliphatic compound
36 Which compounds is alicyclic in nature? Cyclobutane Iso-bstand n-Butane Toluend
37 Which is not present as heteroatom in heteroeyclie compounds? Sulphur Nitrogen Oxygen Chlorine
38 The aliphatic compounds are of two types Straight chain and cyclic Branched chain and alicyclic Straight chain and branched Homocyclic and alicyclic
39 Which of the following is not heterocyclic compound? Naphthalene Furan Pyridine Pyrrole
40 How many secondary carbon atoms are present in Methylcylopropand 1 2 3 0
41 The structural isomerism arises due to the difference in the Number of atoms in the molecule Arrangements of atoms in the molecule Number as well as arrangement of atoms in the molecule Spatial arrangement of atoms
42 Butane has isomeric forms 3 4 2 1
43 Which one of the following does not show isomerism? Propane Hexane Butane Pentane
44 The bond angle between any two sp hybrid orbitals is A.109.28° 107.09° 120° 90° 80°
45
Furan is a compound
 Acyclic Alicyclic Heterocyclic non-aromatic
46 Which one of the following is an aromatic compound? Benzene Thiophene Furan All of them
47 Which one of the following is not an alicyclic compound? Cyclohexene Cyclohexane Benzene Cyclopentane
48 Alicyclic compounds are the homocyclic compounds which contain a ring of 5 or more carbon atoms 6 or more carbon atoms 3 or more carbon atoms 4 or more carbon atoms
49 In homocyclic compounds the ring consists of Carbon and oxygen atoms Carbon and nitrogen atoms Only carbon atoms Carbon atoms with one hetero atom
50 A doubly bonded carbon is cannot be sp2 hybridized can be sp hybridized can attach with three carbons can attach with three hydrogens
51 The hetero atom in py ridine is Oxygen Nitrogen Chlorine Sulphur
52 Which of the compounds cannot show positional isomerism? Alkanes Alkenes Alkynes Alcohols
53 Glucose and fructose are isomers Chain isomers Position isomers Functional group isomers Metamers
54 Butane molecule can have maximum no of isomers 2 5 4 3
55 Cyclobutane structure is categorized under Aromatic compounds Aliphatic compounds Alicyclic compounds Heterocyclic compounds
56 Name the compound, which shows geometric isomerism I-bromo-2-chloropropene 2.3-dimethy lpropene 2-pentene Both A & B
57 1-chloropropane and 2.chlorpropane are isomers of each other, the type of isomerism in these two is called Cis-trans isomerisn Position isomerism Chain isomerism Functional group isomerism
58 As the number of carbon atoms increases the number of isomers also increase. The 5 C compound pentane has as many as 3 isomers 5 isomers 6 isomers 10 isomers
59 Ether show the phenomenon of Positional isomerism Functional group isomeris Meta merism Cis trans isomerism
60 Indicate the number of open chain isomers of C6H14 4 5 6 7
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