CHEMISTRY TEST 3 - PAK ARMED FORCES TEST

QUIZ START

Results

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QUIZ START

#1. Q.69 Reaction of Grignard’s reagent with formaldehyde gives:

Pri-alcohol

Sec-alcohol

Ter-alcohol

Carboxylic

#2. Q.70 Which is not mild oxidizing agent?

Tollen's reagent

Jones reagent

Fehling's solution

Dil HNO3

#3. Q.71 Condensation of Aldehydes with alpha-hydrogen gives:

Acetal

Ketal

Aldol

Cannizzaro product

#4. Q.72 Butyraldehyde has formula of:

HCHO

CH3CHO

C2H5CHO

C3H7CHO

#5. Q.73 Acetaldehyde and methyl ketones react with halogens in the presence of NaOH gives product:

Holoform

Metaformaldehyde

Paraldehyde

Ethanoloxine

#6. Q.74 Addition of mineral acid slowly to aqueous solution of sodium cyanide produces:

HCN

KCN

NaCN

HOCN

#7. Q.75 The cyanogroup -C#N is hydrolysed to the product:

Aldehyde

Ketones

Phenol

Carboxylic acids

#8. Q.76 Dry distillation of calcium acetate results in the formation of:

Formaldehyde

Acetaldehyde

Methyl ethyl ketone

Acetone

#9. Q.77 From formaldehyde we get formalin which is powerful:

Painkiller

Preservative and disinfectant

Bleaching and whitening agent

Deodorant

#10. Q.83 Which of these conditions is mismatched?

CH3OH + O2 -> HCHO (300C, Pt-asbestos)

CH3OH + O2 -> HCHO (FeO/Mo2O3, 500C)

CH3CH2OH + O2 -> CH3CHO

None of these

#11. Q.84 A compound X has all of the properties below. It is a liquid at 25 C it mixes completely with water it reacts with aqueous sodium hydroxide. What could X be?

Ethanoic acid

Ethene

Ethanol

Ethyl ethanoate

#12. Q.85 Reaction of acetic acid with LiAlH4 gives:

Ethanol

Ethanal

Ethane

Ethyl acetate

#13. Q.86 Which of the following has the lowest solubility in water:

HCOOH

CH3-CH2-COOH

CH3COOH

C3H7-COOH

#14. Q.87 An acid that exists as a cyclic dimer in benzene and shows a molar mass of 120g/mol is:

CH3COOH

Cl2CHCOOH

HCOOH

Cl3CCOOH

#15. Q.88 The weakest oxidizing agent that can be used in the reaction CH3CHO + [O] -> CH3COOH is:

Na2Cr2O7/H2SO4

Acid chloride

KMnO4/H2SO4

AgNO3/NH4OH

#16. Q.89 The O-H bond breaks in carboxylic acid when product is:

Salt

Acid chloride

Ester

Amide

#17. Q.93 CH3CN + HCl -> A + B (in the presence of water). In the above reaction, A and B are:

Acetic acid and acid amide

Acetic acid and methyl chloride

Acetic acid and ammonium chloride

Acetic acid and sodium chloride

#18. Q.94 In esterification, the OH group of carboxylic acid departs as?

OH-

H2O

H3O+

H2O2

#19. Q.95 Lowest boiling point is shown by:

Acetic acid

Formic acid

Propionic acid

Valeric acid

#20. Q.96 To prepare ethyl alcohol, the ester that can be hydrolysed is?

methyl formate

methyl acetate

ethyl acetate

ethyl formate

#21. Q.97 Propanone on oxidation gives:

Acetic acid

Formic acid + Acetic acid

Formic acid

Propionic acid

#22. Q.98 Primary structure of proteins refers to:

Coiling and folding in form of specific structure

Bending of protein chain

Sequence of amino acids in a chain

Alpha and Beta sheets

#23. Q.99 Third order of protein structure refers to:

Bending of protein chain

Number and sequence of amino acids

Three-dimensional structure of protein

Site of disulphide bonds

#24. Q.100 Second order of protein structure refers to:

Number and sequence of amino acids

Proteins formed of more than one monomer

Three-dimensional structure of protein

Bending of protein molecule

#25. Q.101 Albumins and globulins are defined as:

Derived protein

Fibrous protein

Conjugated protein

Simple Protein

#26. Q.102 In proteins, the alpha-helix and Beta-pleated sheet are examples of:

Primary Structure

Tertiary Structure

Secondary Structure

Quaternary Structure

#27. Q.103 The most abundant protein in the human body is:

Collagen

Myosin

Keratin

Albumin

#28. Q.104 Enzymes have been mainly classified on the basis of:

protein structure

type of reaction they catalyze

prosthetic groups

bonding in them

#29. Q.105 Dehydrogenase is an example of:

Transferase

Lyase

Hydrolase

Oxido-reductase

#30. Q.106 The enzymes that bring about exchange of functional groups like phosphate are called:

Ligases

Isomerases

Lyases

Transferases

#31. Q.107 Collagen is a fibrous protein present most abundantly in:

heart

connective tissues

nucleus

Arteries

#32. Q.108 The specific substance (metabolite) that fits on the enzyme surface and is converted to products is called:

Co-factor

Prosthetic group

Isoenzyme

Substrate

#33. Q.109 Which of the following chlorosubstituted acid has greater strength of acid:

CH2ClCH2CH2COOH

CH3CH2CHClCOOH

CH3CH2CH2ClCOOH

CH3CH2CH2CH2COOH

#34. Q.110 Which of the following is correct order with respect to acid strength?

Methanoic acid > Ethanoic acid > Propanoic acid > Carbolic acid

Ethanoic acid > Propanoic acid > Methanoic acid > Carbolic acid

Carbolic acid > Propanoic acid > Ethanoic acid > Methanoic acid

Propanoic acid > Ethanoic acid > Carbolic acid > Methanoic acid

#35. Q.111 In the conversion of wine to vinegar:

Ethanol is reduced to ester

Ethanol is converted to ether

Ethanol is oxidized to methane

Ethanol is oxidized to ethanoic acid

#36. Q.112 Ethanoic acid undergoes partial reduction with LiAlH4 to give:

Ethane

Ethanol

Ethanal

Ethyne

#37. Q.113 Which of the following halo-substituted carboxylic acid is the strongest acid:

FCH2COOH

ClCH2COOH

BrCH2COOH

ICH2COOH

#38. Q.115 A fibre which is made from acrylonitrile as monomer:

PVC

Rayon fibre

Acrylic fibre

Polyester fibre

Finish

Results

#1. Q.69 Reaction of Grignard’s reagent with formaldehyde gives:

#2. Q.70 Which is not mild oxidizing agent?

#3. Q.71 Condensation of Aldehydes with alpha-hydrogen gives:

#4. Q.72 Butyraldehyde has formula of:

#5. Q.73 Acetaldehyde and methyl ketones react with halogens in the presence of NaOH gives product:

#6. Q.74 Addition of mineral acid slowly to aqueous solution of sodium cyanide produces:

#7. Q.75 The cyanogroup -C#N is hydrolysed to the product:

#8. Q.76 Dry distillation of calcium acetate results in the formation of:

#9. Q.77 From formaldehyde we get formalin which is powerful:

#10. Q.83 Which of these conditions is mismatched?

#11. Q.84 A compound X has all of the properties below. It is a liquid at 25 C it mixes completely with water it reacts with aqueous sodium hydroxide. What could X be?

#12. Q.85 Reaction of acetic acid with LiAlH4 gives:

#13. Q.86 Which of the following has the lowest solubility in water:

#14. Q.87 An acid that exists as a cyclic dimer in benzene and shows a molar mass of 120g/mol is:

#15. Q.88 The weakest oxidizing agent that can be used in the reaction CH3CHO + [O] -> CH3COOH is:

#16. Q.89 The O-H bond breaks in carboxylic acid when product is:

#17. Q.93 CH3CN + HCl -> A + B (in the presence of water). In the above reaction, A and B are:

#18. Q.94 In esterification, the OH group of carboxylic acid departs as?

#19. Q.95 Lowest boiling point is shown by:

#20. Q.96 To prepare ethyl alcohol, the ester that can be hydrolysed is?

#21. Q.97 Propanone on oxidation gives:

#22. Q.98 Primary structure of proteins refers to:

#23. Q.99 Third order of protein structure refers to:

#24. Q.100 Second order of protein structure refers to:

#25. Q.101 Albumins and globulins are defined as:

#26. Q.102 In proteins, the alpha-helix and Beta-pleated sheet are examples of:

#27. Q.103 The most abundant protein in the human body is:

#28. Q.104 Enzymes have been mainly classified on the basis of:

#29. Q.105 Dehydrogenase is an example of:

#30. Q.106 The enzymes that bring about exchange of functional groups like phosphate are called:

#31. Q.107 Collagen is a fibrous protein present most abundantly in:

#32. Q.108 The specific substance (metabolite) that fits on the enzyme surface and is converted to products is called:

#33. Q.109 Which of the following chlorosubstituted acid has greater strength of acid:

#34. Q.110 Which of the following is correct order with respect to acid strength?

#35. Q.111 In the conversion of wine to vinegar:

#36. Q.112 Ethanoic acid undergoes partial reduction with LiAlH4 to give:

#37. Q.113 Which of the following halo-substituted carboxylic acid is the strongest acid:

#38. Q.115 A fibre which is made from acrylonitrile as monomer:

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