Post on 01-May-2018
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Choose the single correct answer for each of the following questions: (1 Mark
each).
Q. 1. How many lone pairs are present in CH3-O-CH3
i) 3
ii) 2
iii) 1
iv) 4
Q.2. When any hydrocarbon is added to water, it is:
i) Soluble
ii) Insoluble
iii) Partially soluble
iv) None of these
Q.3. Which of the following is true for element Carbon:
i) Monovalent
ii) Divalent
iii) Trivalent
iv) Tetravalent
Q.4. General formula of Alknaes is:
i) CnH2n-2
ii) CnH2n+2
iii) CnH2n
iv) CnH2n+1
Q.5. General formula of Alkenes is:
i) CnH2n-2
ii) CnH2n+2
iii) CnH2n
iv) CnH2n+1
Q.6. General formula of Alkynes is:
i) CnH2n-2
ii) CnH2n+2
iii) CnH2n
iv) CnH2n+1
Q.7. How many constitutional isomers does molecular formula C5H12 have:
i) 3
ii) 2
iii) 4
iv) 0
Q.8. Isomers are the compounds that must have same
i)Structural formula
ii)Molecular formula
iii) Physical properties
iv) Chemical Properties
Q.9. The isomer of butane is
i) 1-methyl propane
ii) 2-methyl propane
iii) 2-methyl butane
iv) Cyclobutane
Q.10. How many hydrogen atoms are present in a cycloalkane with five carbon
atoms
i) 6 ii) 8 iii) 10 iv) 12
Q.11.
Q.1. Which of the following molecule shows cis-trans isomerism:
i) 2-butene
ii) 1-butene
iii) I-pentene
iv) 2-methyl butane
Q.2. The molecular formula C6H5CH3 belongs to the following group:
i) Aliphatic hydrocarbons
ii) Saturated hydrocarbons
iii) alkyne
iv) aromatic hydrocarbons
Q.3. Give the correct IUPAC name of CH2=CHCH2CH2CH(CH3)CH2C(CH3)3
i) 5,7,7-trimethyl 1-octene
ii) 2,2,4-trimethyl 7-octene
iii) 7,7 dimethyl, 1-nonene
iv) 5,7,7,7 tetra methyl, 1-heptene
Q.4. The product obtained by hydration of ethene is:
i) Acetaldehyde
ii) Acetic Acid
iii) Methanol
iv) Ethanol
Q.5. The product obtained by hydration of propene is:
i) 1-propanol
ii) 2-propanol
iii) 1-butene
iv) 2-butene
Q.6. Phenol is:
i) An alcohol
ii) An aldehyde
iii) An aliphatic compound
iv) An aromatic compound
Q.1. Stereoisomers have:
i) Same molecular formula but different structural formula
ii) Same molecular and same structural formula
iii) Different molecular formula but same structural formula
iv) Same molecular formula and same properties
Q.2. Chemical name of polymer ‘Teflon’ is:
i) Polyethylene
ii) Polyvinyl Chloride
iii) Polytetrafluoroethylene
iv) Polypropylene
Q.3. Common name of ‘hydroxybenzene’ is:
i) Aniline
ii) Phenol
iii) Toluene
iv) Benzene
Q.4. What is the IUPAC name of m-diethylbenzene
i) 1,2-diethylbenzene
ii) 1,4-diethylbenzene
iii) 1,3-diethylbenzene
iv) 2,4-diethylbenzene
Q.5. Solubility of ethanol in water is due to:
a) Hydrogen bonds c) Ionic bonds b) Covalent bonds d) Van der Waal forces
Q.6. Dehydration of an alcohol leads to the formation of an………….
a) Alkene b) Alkane c) Alkyne d) Aldehyde
Q.7. Aldehydes on oxidation produce:
a) Alcohols c) Carboxylic acids b) Ketones d) Alkanes
Q.8. Which of the following compounds has the highest boiling point?
a) CH3CH2CH2CH3 c) CH3OCH2CH3
b) CH3CH2CH=CH2 d) CH3CH2CH2OH
Q.9. Which of the following names represents this structure?
a) 4-methyl-3-ethyl-1-cyclohexanone c) 3-ethyl-4-methyl-1-cyclohexanone b) 3-ethyl-4-methylcyclohexanone d) 4-methyl-3-ethylcyclohexanone
Q.10. Select the IUPAC name for: (CH3)2CHCH(OH)CH2C(CH3)3.
a) 2,5,5-trimethyl-3-hexanol c) 1,1,4,4-pentamethylbutanol b) 1,1-dimethylisopentanol d) 2,5-dimethyl-4-hexanol
Q.1. Which of the following is the correct IUPAC name of the structure shown?
a) 4-methylhexanal c) 3-proylpropanal
b) methylhexanal d) 3-methylhexanal
Q.2. What is the common name of CH3CH2OCH2CH2CH2CH3?
a) Diethylether c) Dibutylether
b) Butylethylether d) Ethylbutylether
Q.3. What is the IUPAC name of the compound shown?
a) 3-ethyl-2-heptanone c) 5-ethyl-2-heptanone b) 3-butyl-2-pentanone d) 3-ethyl-2-hexanone
Q.4. Which of the following names represents this structure?
a) 1-Ethyl-4-methyl-2-pentanone c) 1-Methyl-4-ethyl-3-pentanone b) 2-Ethyl-4-methyl-cyclopentanone d) 1-Methyl-3-thyl-4-pentanone
Q.5. The isomers below are:
a) Identical c) Cis-trans isomers b)Constitutional isomers d) Enantiomers
Q.6. Which of the following has lower boiling point? C
Q.7. Oxidation of secondary alcohol gives :
a) Aldehyde b) Ketone c) Acid d) No reaction
Q.8. A molecule containing an atom which carries four different atoms or groups
attached to it is known as a) Chiral molecule c) Achiral molecue b) Symmetric molecule d) None of these
Q.9. Which class of alcohol is isopropyl alcohol:
a) Primary c) Secondary b) Tertiary d) Quaternary
Q.10. Which one of the following is a tertiary alcohol?
a) CH3CH2OH c) CH3OH b) CH3CH(OH)CH3 d) (CH3) 3COH
Q.1. The number of chirality centers of the structure given below is:
a) 2 b) 3 c) 4 d) 5
Q.2. Which of the following structures is a 3° amide ? a
CH3CH2N(CH3)2 CH3CH2CONHCH3 CH3CH2CON(CH3)2 CH3CH2NHCH3
a) b) c) d)
Q.3. Which of the following structures represents triethylammonium iodide? c
(CH3CH2)2NH2 I CH3CH2NH3 I (CH3CH2)3NH I (CH3CH2)4N I
a) b) c) d)
Q.4. Choose the correct IUPAC name of this compound
CH3CHCHCHCH2COOH
CH3
Cl
CH3
a) 2,4-dimethyl-3-chlorohexanoic acid c) 3-chloro-2,4-dimethylhexanoic acid
b) 4-chloro-3,5-dimethylhexanoic acid d) 3,5-dimethyl-4-chlorohexanoic acid
Q.5. What is the common name of the following compound?
NCH2CH3
CH3
a) N-ethyl,N-methyl toluene c) ethylmethylaminobenzene b) N-ethyl,N-methyl aniline d) ethylmethyl aniline
Q.6. Which of the following structures represents N,N-dimethylacetamide? b
H C
O
N(CH3)2CH3 C
O
N(CH3)2 H C
O
NHCH3H3C C
O
NHCH3
a) b) c) d)
Q.7. Which of the following has the higher boiling point?
a) CH3CH2COOH c) CH3COOCH3 b) CH3CH2CH2OCH3 d) CH3CH2CH2CH2OH
Q.8. What products are formed when (CH3CH2)2NH is treated with HCl ?
a) (CH3CH2)2NH3
+ c) (CH3CH2)2NH2+Cl-
b) (CH3CH2) NH2 d) (CH3CH2)3N
Q.9. The reaction of CH3CH2CO2H and C2H5OH / H2SO4 gives
a) CH3CH2COOH c) CH3CH2COOC2H5 b) CH3CH2COOCOCH2CH3 d) CH3CH2CONHC2H5
Q.10. Which of the following compounds is more soluble in water?
a) CH3(CH2)4COOH c) CH3(CH2)6COONa b) CH3(CH2)5COOH d) CH3(CH2)6COOH
Q.11. What is the classification of the following amine ?
N CH3
a) Primary amine c) secondary amine b) Tertiary amine d) quaternary amine
Q.12. What are the hydrolysis products of the following ester using H2O/H2SO4?
C6H5CH2COOCH2CH3 + H2O H2SO4
a) C6H5CH2COOH + C2H5OH c) C6H5CH2COOCH2CH3 + H2O b) C6H5COOH + C2H5OH d) C6H5CH2COCH3 + CH3OH
Q.13. What products are formed when the following ester is hydrolyzed with
water and NaOH? CH3CH2CH2COOC2H5 + H2O
NaOH
a) CH3 (CH2)2COOC2H5 + H2O c) CH3CH2CH2COONa + C2H5OH b) (CH3)2 CHCOOH + C2H5OH d) CH3CH2COCH3 + C2H5OH
Q.14. Which of the following has the higher boiling point?
a) CH3CH2CH2CONH2 c) CH3CON(CH3)2 b) CH3CH2CONHCH3 d) CH3CH2CH2CH3
Q.15. What are the products of the following reaction? c
CH3CNHCH2CH2CH3 + H2OHCl
CH3CH2CH2NH3Cla) CH3COOH + H2NCH2CH2CH3 c) CH3COOH +
b) CH3CONH2 + CH2CH2CH2OH d) CH3CONHCH3 + CH3CH2OH
O
Q.16. What are the products of the hydrolysis of the following amide?
+ H2ONaOH
C
O
N(CH3)2
a) C6H5COOH + (CH3)2NH c) C6H5COONa + (CH3)2NH + H2O b) C6H5COOH + CH3NH2 d) C6H5CON(CH3)2 + H2O + NaOH
Q.1. Which of the following represents α-isomer of cyclic form of the sugar
shown ?c
HOCH2 C C C C CHO
H
H
OH
OH
H
H
OH
OH
OOH
H
H
OH
H
OHOH
H
CH2OH
H
OOH
H
H
OH
OH
HH
OH
CH2OH
H
OOH
H
H
OH
H
OHH
OH
CH2OH
H
OOH
H
OH
H
H
OHH
OH
CH2OH
H
a) b) c) d)
Q.2. Which of the following monosaccharides represents L-ketopentose? b
CHO
HO H
H OH
CH2OH
H OH
CHO
H OH
HO H
CH2OH
HO H
CH2OH
O
HO H
CH2OH
HO H
CH2OH
O
H OH
CH2OH
H OH
a) b) c) d)
Q.3. Which of the following cyclic structures represents β-D-fructose? c
OH
CH2OH
H
CH2OH
OH
OH
O
OH
CH2OH
H
CH2OH
OH OH
O
CH2OH
OH
H
CH2OH
OH
OH
O
OH
CH2OH
H
CH2OH
OH OH
O
a) b) c) d)
Q.4. What is the product formed when D-glucose is treated with Cu+2 / OH‾ ? b
CHO
H OH
HO H
H OH
H OH
CH2OH
COOH
H OH
HO H
H OH
H OH
CH2OH
CHO
HO H
H OH
HO H
HO H
CH2OH
COOH
HO H
H OH
HO H
HO H
CH2OH
a) b) c) d)
Q.5. What is the product formed when a D-aldopentose is treated with H2 / Pd ? c
CHO
HO H
H OH
CH2OH
H OH
COOH
H
H OH
CH2OH
H OH
CH2OH
HO H
H OH
CH2OH
H OH
CH3
HO H
H OH
CH2OH
H OH
HO
a) b) c) d)
Q.6. Starch consists mainly from?
a) Amylose and amylopectine c) amylose and glycogen b) Glucose and glycogen d) glucose and galactose
Q.7. The structure below is corresponding to a disaccharide in the form of :
O O
H
H
OH
OH
OH
H
14
4 1
a) α - glycoside b) β - glycoside c) δ- glycoside d) non of the above
Q.8. The hydrolysis of maltose gives two units of :
a) α-D-galactose b) β-D-glucose c) α-D-glucose d) β-D-galactose
Q.9. All carbohydrates contain one or more chirality centers except:
a) Dihydroxy acetone c) glycerladehyde b) Glucose d) fructose
Q.1. The amino acid given below can be classified as :
H3N C
H
COO
CH2CH2CONH2
a) Neutral b) Basic c) Acidic d) Zwitterion
Q.2. The pH at which the amino acid exist primarily in its neutral form is called:
a) Hydrogen bond c) isoelectric point b) Melting point d) boiling point
Q.3. The net charge of the zwitterion of an amino acid is :
a) -1 b) -2 c) zero d) +1
Q.4. Which of the following structures represents glycine in a solution of pH = 2?
b
C
H
COOH3N
H
C
H
COOHH3N
H
C
H
COOH2N
H
C
H
COOHH2N
H
a) b) c) d)
Q.5. The C-terminal of the following peptide chain is ?
Arg-His-Ala-Asp
a) Arginine c) histidine b) Aspartic acid d) alanine
Q.6. Three amino acids joined together by two peptide bond, called………………
a) Tripeptide c) dipeptide b) Polypeptide d) tetrapeptide
Q.7. Which form is predominates at pH (11) for neutral amino acid ?
a) Zwitterion c) anionic form (-1) b) Cationic form(+1) d) all of them
Q.8. What is the name of a tripeptide has N-terminal amino acid of tyrosine ,
leucine and C-terminal amino acid alanine?
a) leucyltyrosylalanine c) alanylleucyltyrosine b) leucylalanyltyrosine d) tyrosylalanylleucine
Q.9. All amino acids have a chirality center except:
a) Alanine c) histidine b) Glycine d) aspartic acid
Q.10.