07a1bs04 - Applied Chemistry
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Code No: 07A1BS04 Set No. 1 JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY HYDERABAD I B.Tech II Mid-Term Examinations, Feb. – 2009 APPLIED CHEMISTRY Objective Exam Name: __________________ Hall Ticket No. ________________ Answer All Questions. All Questions Carry Equal Marks. Time: 20 Min. Marks: 20. I.
Choose the correct alternative:
1.
Addition polymerisation is catalysed by a free radical with (A) Paired electron (B) Unpaired electron (C) Covalent bond (D) Two pairs of electrons
[
]
2.
Which of the following is not a natural polymer? (A) Buna-S (B) Spider web (C) Silk (D) Cellulose
[
]
3.
Which polymer can be produced with the monomer --H2C--CH2-(A) PVC (B) Polystyrene (C) Polyethylene (D) Poly propylene
[
]
4.
Which of the follwing group is needed for addition polymerisation? (A) =C=O (B) --CHO (C) >C=C< (D) --CH3
[
]
5.
Condensation of ethylene glycol and terephthalic acid results in the formation of [ (A) Nylon (B) Nylon 6 (C) Nylon 6.6 (D) Terylene
]
6.
The monomer F2C=CF2 gives the following polymer (A) PVC (B) Nylon (C) Novolac (D) Teflon
[
]
7.
Buna-N is an example of synthetic rubber. in this N represents (A) Nitrogen (B) Nitrile (C) Normal (D) Nitro
[
]
8.
The polymerisation process in which water is produced when the monomers join to make a polymer is [ (A) Condensation polymerisation (B) Addition polymerisation (C) Bonding polymerisation (D) Cationic polymerisation
]
9.
The moulding process termed extrusion is used to make objects such as (A) Cups (B) Soft drink bottle (C) Plumbing pipes (D) Breakfast bowel
[
]
10.
All plastics are made up of long chains of atoms that are held together by [ (A) Ionic bonds (B) Siglet linkage (C) Hydrogen bond (D) Covalent bonds.
]
Cont….2
[2] Code No:
07A1BS04
Set No. 1
II
Fill in the Blanks
11.
Liquid junction potential in galvanic cell is eliminated by the use of____________
12.
O2+2H2O+2e --------> 2OH represents ____________________
13.
The position of metals and non-metals in electrochemical series is___________
14.
Eletrochemical corrosion always occurs at the ____________
15.
The rate of corrosion ________________when the ratio of anodic to cathodic area decreases.
III
Match the Following
16. Galvanic cell
[
]
(a) Constituent of a paint
17. Galvanizing
[
]
(b) Plastcizer
18. Fe3O4
[
]
(c) Half Cell
19. Trycrecyl phosphate
[
]
(d) Daniel cell
20. Pigment
[
]
(e) Black rust of iron (f) Yellow rust of iron (g) Zinc metal
-oOo-
Code No: 07A1BS04 Set No. 2 JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY, HYDERABAD I B.Tech II Mid-Term Examinations, Feb. – 2009 APPLIED CHEMISTRY Objective Exam Name: __________________ Hall Ticket No. ________________ Answer All Questions. All Questions Carry Equal Marks. Time: 20 Min. Marks: 20. I.
Choose the correct alternative:
1.
Coating of zinc on iron is known as (A) Colorising (B) Galvanising (C) Cementation (D) Sheradising
[
]
2.
The phenomenon in which a metal or alloy shows high resistance to corrosion due to the formation of protective oxide layer is known as [ (A) Activation (B) Deactivation (C) Passivation (D) Reduction
]
The specific volume ratio of Ni,Cr and W are 1.6,2.0 and 3.6 respectively.The then the rate of oxidation of W is (A) More (B) Least (C) More than Ni (D) More than Cr
[
]
[
]
[
]
3.
4.
Which one of the following represents cathodic protection? (A) Sacrificial anode (B) Painting (C) Cladding (D) Phosphate coating
5.
The chemical composition of the rust of iron is (A) FeO (B) Fe2O (C) FeOH (D) Fe2O3.xH2O
6.
The linear thermosetting plastic produced from phenol and formaldehyde is (A) Bakelite (B) Novolac (C) Melanine (D) Glyptol
[
]
7.
In the cell Zn// Zn (aq) // Cu (aq)/ Cu the double line represents (A) Seperation (B) Porous pot (C) Anode (D) Salt bridge
[
]
8.
Film forming constituent of a paint among the following is (A) Vehicle (B) Filler (C) Pigment (D) Plasticizer
[
]
9.
A device which produces chemical reaction due to current is known as (A) Galvanic cell (B) Electrolytic cell (C) Fuel cell (D) Dry cell
[
]
10.
The ratio of the volumes of the metal oxide to the metal is termed (A) Specific volume (B) Specific Density (C) Specific volume ratio (D) Volume ratio
[
]
Cont…2
[2] Code No:
07A1BS04
Set No. 2
II
Fill in the Blanks
11.
--CO--NH-- is the type of linkage present in the polymer ________________
12.
Bakelite is an example of polymer which is thermo____________________
13.
Of Nylon,Bakelite and Terylene ______________has an ester linkage.
14.
A device which produces current by chemical reaction is known as _______________cell
15.
An example of inorganic anodic inhibiter is _______________
III
True (or) False Statement
16.
The thermoplastics can be heated and reshaped many times
[True/False]
17.
Bakelite is an example of thermosetting plastic with linear structure.
[True/False]
18.
The chemical composition of the black corrosion product of iron is Fe3O4 [True/False]
19.
Natural rubber is a polymer of transform of isoprene
[True/False]
20.
The colour of crude rubber is amber.
[True/False]
-oOo-
Code No: 07A1BS04 Set No. 3 JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY, HYDERABAD I B.Tech II Mid-Term Examinations, Feb. – 2009 APPLIED CHEMISTRY Objective Exam Name: __________________ Hall Ticket No. ________________ Answer All Questions. All Questions Carry Equal Marks. Time: 20 Min. Marks: 20. I.
Choose the correct alternative:
1.
The ratio of the volume of the metal oxide to metal is known as [ ] (A) Specific density (B) Specific volume (C) Specific volume ratio (D) Volume ratio
2.
Self condensation of amino caproic acid produces the plasic (A) Melamine (B) Nylon 6.6 (C) Nylon 6 (D) Glyptol
[
]
3.
The process of cementation of zinc powder to iron is termed (A) Colorising (B) Sheradising (C) Galvanising (D) Blasting
[
]
4.
Which one of the following is used to vulcanize natural rubber ? (A) Sulphuryl Chloride (B) PCl5 (C) Graphite (D) Charcoal
[
]
5.
Addition of hydrazine hydrate to corrosive environment prevents corrosion by (A) Consuming oxygen (B) Consumes hydrogen (C) Consuming water (D) Consuming Chlorine
[
]
6.
In Nylon 6.6 The numbers 6 .6 refer to [ (A) Nothing (B) No significance (C) Batch number (D) No of carbon atoms
]
7.
In electrochemical corrosion oxidation occurs only at (A) Inert anode (B) Inert cathode (C) Cathode (D) Anode
[
]
8.
The common packing material thermocole is made from (A) Poly urethane (B) Melamine (C) Nylon (D) Bakelite
[
]
9.
Trycrecyl phosphate is used in the fabrication of plastics.Its main function is (A) Conductor (B) Plasticizer (C) Filler (D) To impart colour to plastics
[
]
10.
When the ratio of anodic to cathodic area decreases the rate of corrosion (A) Decreases (B) No corrosion (C) Increases (D) Oxygen evolves
[
]
Cont….2
[2] Code No:
07A1BS04
Set No. 3
II
Fill in the Blanks
11.
Novolac is a ____________ thermosetting polymer
12.
Bakelite is made by ___________ polymerisation of phenol and formaldehyde
13.
The rate of corrosion _____________ with increase in temperature.
14.
Daniel cell is an example of ___________ cell.
15.
Either sulphur or____________ can be used for vulcanisation of rubber
III
Match the Following
16.
Homopolymer
[
]
( a ) Extrusion moulding
17.
Thermosetting
[
]
( b ) Galvanization
18.
GR-S
[
]
( c ) Tinning
19.
Zinc metal
[
]
( d ) Polyethylene
20.
Plastic tubes
[
]
(e)
Synthetic rubber
( f ) Bakelite
-oOo-
Code No: 07A1BS04 Set No. 4 JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY, HYDERABAD I B.Tech II Mid-Term Examinations, Feb. – 2009 APPLIED CHEMISTRY Objective Exam Name: __________________ Hall Ticket No. ________________ Answer All Questions. All Questions Carry Equal Marks. Time: 20 Min. Marks: 20. I.
Choose the correct alternative:
1.
The chemical composition of brown rust of iron is (A) Fe2O3 with Fe(OH)3 (B) Fe (OH)2 (C) FeO (D) Fe(OH)3
[
]
2.
Galvenization of iron involves the coating of iron with (A) Tin (B) Zinc (C) Magnesium (D) Cobalt
[
]
3.
The ratio of the volume of the metal oxde to the metal is termed (A) Specific volume (B) Specific density (C) Specific ratio (D) Specific volume ratio
[
]
4.
The process of cementation of zinc powder to iron is termed as (A) Colourising (B) Sheradizing (C) Galvanizing (D) Blasting
[
]
5.
Polymerisation of chloroprene results in the formation of the polymer (A) Bakelite (B) Nylon (C) Neoprene (D) Nylon 6
[
]
6.
Self condensation of amino caproic acid produces the plastic (A) Nylon 6 (B) Nylon (C) Nylon 6.6 (D) Melamine
[
]
7.
Which one of the following is used to vulcanise natural rubber ? [ (A) Phosphorus (B) Camphur (C) Sulphuryl Chloride (D) Graphite
]
8.
Which of the following is used as plastisizer in hefabrication plastics ? [ (A) Trycresyl phosphate (B) Carborundum (C) Graphite (D) Mica
]
9.
Addition of hydrazine hydrate to corrosive environment [ (A) Consumes oxygen (B) Consumes CO2 (C) Consumes Hydrogen (D) Reduces overvoltage
]
10.
Specific volume ratio of Ni,Cr,W are 1.6,2.0, and 3.6 respectively rate of oxidation of Ni is [ ] (A) More (B) Least (C) More at high temperatures (D) More at high pressures
Cont…..2
[2] Code No:
07A1BS04
Set No. 4
II
Fill in the Blanks
11.
Of the metals Mg , Sn and W the one that undergoes corrosion is ___________
12.
Phenol and formaldehyde on ____________ give bakelite
13.
Nylon is an example of ____________ Polymer
14.
Extrusion moulding is used mainly for ____________ moulding of of thermoplastic resins
15.
The rate of corrosion ________________when the ratio of anodic to cathodic area decreases
III
Match the Following
16.
GR-S
[
]
(a) Filler
17.
Mica
[
]
(b) Vulcanization
18.
Sulphur
[
]
(c) Galvenic cell
19.
Daniel cell
[
]
(d) Elastomer
20.
Zinc metal
[
]
(e) Extrusion moulding (f) Sacrificial anode (g) Oxidiser
-oOo-
Choose the correct alternative:
1.
Addition polymerisation is catalysed by a free radical with (A) Paired electron (B) Unpaired electron (C) Covalent bond (D) Two pairs of electrons
[
]
2.
Which of the following is not a natural polymer? (A) Buna-S (B) Spider web (C) Silk (D) Cellulose
[
]
3.
Which polymer can be produced with the monomer --H2C--CH2-(A) PVC (B) Polystyrene (C) Polyethylene (D) Poly propylene
[
]
4.
Which of the follwing group is needed for addition polymerisation? (A) =C=O (B) --CHO (C) >C=C< (D) --CH3
[
]
5.
Condensation of ethylene glycol and terephthalic acid results in the formation of [ (A) Nylon (B) Nylon 6 (C) Nylon 6.6 (D) Terylene
]
6.
The monomer F2C=CF2 gives the following polymer (A) PVC (B) Nylon (C) Novolac (D) Teflon
[
]
7.
Buna-N is an example of synthetic rubber. in this N represents (A) Nitrogen (B) Nitrile (C) Normal (D) Nitro
[
]
8.
The polymerisation process in which water is produced when the monomers join to make a polymer is [ (A) Condensation polymerisation (B) Addition polymerisation (C) Bonding polymerisation (D) Cationic polymerisation
]
9.
The moulding process termed extrusion is used to make objects such as (A) Cups (B) Soft drink bottle (C) Plumbing pipes (D) Breakfast bowel
[
]
10.
All plastics are made up of long chains of atoms that are held together by [ (A) Ionic bonds (B) Siglet linkage (C) Hydrogen bond (D) Covalent bonds.
]
Cont….2
[2] Code No:
07A1BS04
Set No. 1
II
Fill in the Blanks
11.
Liquid junction potential in galvanic cell is eliminated by the use of____________
12.
O2+2H2O+2e --------> 2OH represents ____________________
13.
The position of metals and non-metals in electrochemical series is___________
14.
Eletrochemical corrosion always occurs at the ____________
15.
The rate of corrosion ________________when the ratio of anodic to cathodic area decreases.
III
Match the Following
16. Galvanic cell
[
]
(a) Constituent of a paint
17. Galvanizing
[
]
(b) Plastcizer
18. Fe3O4
[
]
(c) Half Cell
19. Trycrecyl phosphate
[
]
(d) Daniel cell
20. Pigment
[
]
(e) Black rust of iron (f) Yellow rust of iron (g) Zinc metal
-oOo-
Code No: 07A1BS04 Set No. 2 JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY, HYDERABAD I B.Tech II Mid-Term Examinations, Feb. – 2009 APPLIED CHEMISTRY Objective Exam Name: __________________ Hall Ticket No. ________________ Answer All Questions. All Questions Carry Equal Marks. Time: 20 Min. Marks: 20. I.
Choose the correct alternative:
1.
Coating of zinc on iron is known as (A) Colorising (B) Galvanising (C) Cementation (D) Sheradising
[
]
2.
The phenomenon in which a metal or alloy shows high resistance to corrosion due to the formation of protective oxide layer is known as [ (A) Activation (B) Deactivation (C) Passivation (D) Reduction
]
The specific volume ratio of Ni,Cr and W are 1.6,2.0 and 3.6 respectively.The then the rate of oxidation of W is (A) More (B) Least (C) More than Ni (D) More than Cr
[
]
[
]
[
]
3.
4.
Which one of the following represents cathodic protection? (A) Sacrificial anode (B) Painting (C) Cladding (D) Phosphate coating
5.
The chemical composition of the rust of iron is (A) FeO (B) Fe2O (C) FeOH (D) Fe2O3.xH2O
6.
The linear thermosetting plastic produced from phenol and formaldehyde is (A) Bakelite (B) Novolac (C) Melanine (D) Glyptol
[
]
7.
In the cell Zn// Zn (aq) // Cu (aq)/ Cu the double line represents (A) Seperation (B) Porous pot (C) Anode (D) Salt bridge
[
]
8.
Film forming constituent of a paint among the following is (A) Vehicle (B) Filler (C) Pigment (D) Plasticizer
[
]
9.
A device which produces chemical reaction due to current is known as (A) Galvanic cell (B) Electrolytic cell (C) Fuel cell (D) Dry cell
[
]
10.
The ratio of the volumes of the metal oxide to the metal is termed (A) Specific volume (B) Specific Density (C) Specific volume ratio (D) Volume ratio
[
]
Cont…2
[2] Code No:
07A1BS04
Set No. 2
II
Fill in the Blanks
11.
--CO--NH-- is the type of linkage present in the polymer ________________
12.
Bakelite is an example of polymer which is thermo____________________
13.
Of Nylon,Bakelite and Terylene ______________has an ester linkage.
14.
A device which produces current by chemical reaction is known as _______________cell
15.
An example of inorganic anodic inhibiter is _______________
III
True (or) False Statement
16.
The thermoplastics can be heated and reshaped many times
[True/False]
17.
Bakelite is an example of thermosetting plastic with linear structure.
[True/False]
18.
The chemical composition of the black corrosion product of iron is Fe3O4 [True/False]
19.
Natural rubber is a polymer of transform of isoprene
[True/False]
20.
The colour of crude rubber is amber.
[True/False]
-oOo-
Code No: 07A1BS04 Set No. 3 JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY, HYDERABAD I B.Tech II Mid-Term Examinations, Feb. – 2009 APPLIED CHEMISTRY Objective Exam Name: __________________ Hall Ticket No. ________________ Answer All Questions. All Questions Carry Equal Marks. Time: 20 Min. Marks: 20. I.
Choose the correct alternative:
1.
The ratio of the volume of the metal oxide to metal is known as [ ] (A) Specific density (B) Specific volume (C) Specific volume ratio (D) Volume ratio
2.
Self condensation of amino caproic acid produces the plasic (A) Melamine (B) Nylon 6.6 (C) Nylon 6 (D) Glyptol
[
]
3.
The process of cementation of zinc powder to iron is termed (A) Colorising (B) Sheradising (C) Galvanising (D) Blasting
[
]
4.
Which one of the following is used to vulcanize natural rubber ? (A) Sulphuryl Chloride (B) PCl5 (C) Graphite (D) Charcoal
[
]
5.
Addition of hydrazine hydrate to corrosive environment prevents corrosion by (A) Consuming oxygen (B) Consumes hydrogen (C) Consuming water (D) Consuming Chlorine
[
]
6.
In Nylon 6.6 The numbers 6 .6 refer to [ (A) Nothing (B) No significance (C) Batch number (D) No of carbon atoms
]
7.
In electrochemical corrosion oxidation occurs only at (A) Inert anode (B) Inert cathode (C) Cathode (D) Anode
[
]
8.
The common packing material thermocole is made from (A) Poly urethane (B) Melamine (C) Nylon (D) Bakelite
[
]
9.
Trycrecyl phosphate is used in the fabrication of plastics.Its main function is (A) Conductor (B) Plasticizer (C) Filler (D) To impart colour to plastics
[
]
10.
When the ratio of anodic to cathodic area decreases the rate of corrosion (A) Decreases (B) No corrosion (C) Increases (D) Oxygen evolves
[
]
Cont….2
[2] Code No:
07A1BS04
Set No. 3
II
Fill in the Blanks
11.
Novolac is a ____________ thermosetting polymer
12.
Bakelite is made by ___________ polymerisation of phenol and formaldehyde
13.
The rate of corrosion _____________ with increase in temperature.
14.
Daniel cell is an example of ___________ cell.
15.
Either sulphur or____________ can be used for vulcanisation of rubber
III
Match the Following
16.
Homopolymer
[
]
( a ) Extrusion moulding
17.
Thermosetting
[
]
( b ) Galvanization
18.
GR-S
[
]
( c ) Tinning
19.
Zinc metal
[
]
( d ) Polyethylene
20.
Plastic tubes
[
]
(e)
Synthetic rubber
( f ) Bakelite
-oOo-
Code No: 07A1BS04 Set No. 4 JAWAHARLAL NEHRU TECHNOLOGICAL UNIVERSITY, HYDERABAD I B.Tech II Mid-Term Examinations, Feb. – 2009 APPLIED CHEMISTRY Objective Exam Name: __________________ Hall Ticket No. ________________ Answer All Questions. All Questions Carry Equal Marks. Time: 20 Min. Marks: 20. I.
Choose the correct alternative:
1.
The chemical composition of brown rust of iron is (A) Fe2O3 with Fe(OH)3 (B) Fe (OH)2 (C) FeO (D) Fe(OH)3
[
]
2.
Galvenization of iron involves the coating of iron with (A) Tin (B) Zinc (C) Magnesium (D) Cobalt
[
]
3.
The ratio of the volume of the metal oxde to the metal is termed (A) Specific volume (B) Specific density (C) Specific ratio (D) Specific volume ratio
[
]
4.
The process of cementation of zinc powder to iron is termed as (A) Colourising (B) Sheradizing (C) Galvanizing (D) Blasting
[
]
5.
Polymerisation of chloroprene results in the formation of the polymer (A) Bakelite (B) Nylon (C) Neoprene (D) Nylon 6
[
]
6.
Self condensation of amino caproic acid produces the plastic (A) Nylon 6 (B) Nylon (C) Nylon 6.6 (D) Melamine
[
]
7.
Which one of the following is used to vulcanise natural rubber ? [ (A) Phosphorus (B) Camphur (C) Sulphuryl Chloride (D) Graphite
]
8.
Which of the following is used as plastisizer in hefabrication plastics ? [ (A) Trycresyl phosphate (B) Carborundum (C) Graphite (D) Mica
]
9.
Addition of hydrazine hydrate to corrosive environment [ (A) Consumes oxygen (B) Consumes CO2 (C) Consumes Hydrogen (D) Reduces overvoltage
]
10.
Specific volume ratio of Ni,Cr,W are 1.6,2.0, and 3.6 respectively rate of oxidation of Ni is [ ] (A) More (B) Least (C) More at high temperatures (D) More at high pressures
Cont…..2
[2] Code No:
07A1BS04
Set No. 4
II
Fill in the Blanks
11.
Of the metals Mg , Sn and W the one that undergoes corrosion is ___________
12.
Phenol and formaldehyde on ____________ give bakelite
13.
Nylon is an example of ____________ Polymer
14.
Extrusion moulding is used mainly for ____________ moulding of of thermoplastic resins
15.
The rate of corrosion ________________when the ratio of anodic to cathodic area decreases
III
Match the Following
16.
GR-S
[
]
(a) Filler
17.
Mica
[
]
(b) Vulcanization
18.
Sulphur
[
]
(c) Galvenic cell
19.
Daniel cell
[
]
(d) Elastomer
20.
Zinc metal
[
]
(e) Extrusion moulding (f) Sacrificial anode (g) Oxidiser
-oOo-
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