Choose the single correct answer for each of the...

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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 CH 3 -O-CH 3 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

Transcript of Choose the single correct answer for each of the...

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.12.

Alkane

Q.1.

Q.2.

Q.3.

Q.4.

Q.5.

Q.6.

Q.7.

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.7.

Q.8.

Q.9.

Q.10.

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.

Q.11.

Q.12.