Exam Details
| Subject | basic chemistry ( group-4) | |
| Paper | ||
| Exam / Course | diploma engineering | |
| Department | ||
| Organization | Gujarat Technological University | |
| Position | ||
| Exam Date | January, 2019 | |
| City, State | gujarat, ahmedabad |
Question Paper
1/9
Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGINEERING- C to D Bridge Course Examination WINTER 2018
Subject Code: C300011 Date: 04-01-2019
Subject Name: BASIC CHEMISTRY GROUP-4)
Time: 02:30 PM TO 04:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Each question is of 1 mark.
4. Use of only simple calculator is permitted. (Scientific/Higher Version not allowed).
5. English version is authentic
o.
Question Text and Option.
1.
The catalysis in which reagents and catalyst are in different physical state is known as
A.
Heterogeneous Catalysis
B.
Homogeneous Catalysis
C.
Catalytic Poison
D.
Catalytic Promoter
A.
B.
C.
D.
2.
PH POH
A.
14
14
7
C.
10
D.
0
PH POH
A.
14
14
7
C.
10
D.
0
3.
Corrosion increases with ......... in moisture in atmosphere.
A.
Increase
B.
Decrease
C.
remains same
D.
None of these
.........
A.
B.
C.
D.
4.
1 PPM
A.
1
B.
0.01
C.
0.1
D.
10
1 =..............
A.
1
B.
0.01
C.
0.1
D.
10
5.
………….is an aromatic compound?
A.
Methane
B.
Ethane
C.
Benzene
D.
Ethyne
...........
A.
B.
C.
D.
6.
Which of the following is the type of lubricants?
A.
Solid lubricants
B.
Semi solid lubricants
C.
Liquid lubricants
D.
All of These
2/9
A.
B.
C.
D.
7.
Monomer of Polythene is ……..
A.
CH4
B.
CH2=CH2
C.
CH3
D.
CHCl
...............
A.
CH4
B.
CH2=CH2
C.
CH3
D.
CHCl
8.
The chemical bond formed by transfer of electrons is called………
A.
Ionic bond
B.
Covalent bond
C.
Hydrogen bond
D.
Metallic bond
A.
B.
C.
D.
9.
PH of basic solution is
A.
B.
C.
D.
14
pH...................
A.
B.
C.
D.
14
10.
.......... Metal is used in Tinning.
A.
Zn
B.
Tn
C.
Sn
D.
Fe
A.
Zn
B.
Tn
C.
Sn
D.
Fe
11.
Molecular weight of CaCl2 is ………..gm/mol
A.
100
B.
111
C.
95
D.
120
CaCl2 ........
A.
100
B.
111
C.
95
D.
120
12.
Compound containing single bond has ……… Hybridization.
A.
sp
B.
sp2
C.
sp3
D.
None of these
A.
sp
B.
sp2
C.
sp3
D.
13.
………. Is used to reduce the friction in machine.
A.
Polymer
B.
Lubricant
C.
Catalyst
D.
Metal
..........
A.
B.
C.
D.
14.
………..is used in vulcanisation of Rubber.
A.
S
B.
C
C.
Al
D.
N
..........
A.
S
B.
C
C.
Al
D.
N
15.
…… has FCC arrangement.
A.
Fe
B.
Cd
3/9
C.
Cr
D.
Au
………. FCC
A.
Fe
B.
Cd
C.
Cr
D.
Au
16.
The potential of standard electrode hydrogen electrode is ………. volt
A.
100
B.
0
C.
50
D.
25
A.
100
B.
0
C.
50
D.
25
17.
……… corrosion is observed in rivets and bolts.
A.
Water-line
B.
Pitting
C.
Crevice
D.
Atmospheric
..................
A.
B.
C.
D.
18.
………. Is used for Estimation of hardness of water.
A.
EDTA
B.
DDT
C.
COOH
D.
EBT
...............
A.
EDTA
B.
DDT
C.
COOH
D.
EBT
19.
CnH2n+2 is general formula of ……..series
A.
Alkyne
B.
Alkene
C.
Alkane
D.
Aromatic
CnH2n+2 ............
A.
B.
C.
D.
20.
Cloud point of good lubricant should be
A.
Moderate
B.
High
C.
Low
D.
Too High
............
A.
B.
C.
D.
21.
Nylon6,6 is formed by
A.
Vulcanization
B.
Condensation polymerization
C.
Addition polymerization
D.
Galvanisation
6,6 .........
A.
B.
C.
D.
22.
O2 molecule possesses ......... covalent bonds.
A.
1
B.
2
C.
3
D.
4
O2 …………
A.
1
B.
2
C.
3
D.
4
23.
pH ……….
A.
log
B.
log
C.
log
D.
None of these
pH ……….
A.
log
B.
log
C.
log
D.
24.
Destruction or decay of metal by chemical or electrochemical reaction is known as …………
4/9
A.
Oxidation
B.
Reduction
C.
Corrosion
D.
Redox
...
A.
B.
C.
D.
25.
The water which give lather with soap is called a water
A.
Soft
B.
Hard
C.
Pure
D.
Impure
.........
A.
B.
C.
D.
26.
At the end of distillation of coal tar, ……… is obtained.
A.
Light oil
B.
Heavy oil
C.
Anthracene oil
D.
None of these
............
A.
B.
C.
D.
27.
............. is used for measurement of Fire point and Flash point.
A.
Viscometer
B.
Voltmeter
C.
Pensky marten
D.
Borometer
..................
A.
B.
C.
D.
28.
Polyvenyl chloride is known as………..
A.
PVC
B.
PVL
C.
PVCD
D.
PV
.........
A.
PVC
B.
PVL
C.
PVCD
D.
PV
29.
Which catalyst is used for the manufacture of ammonia?
A.
Fe
B.
Ni
C.
Pt
D.
Mo
........
A.
Fe
B.
Ni
C.
Pt
D.
Mo
30.
Buffer solution is the solution whose pH …………..
A.
Increases
B.
Remains constant
C.
Decreases
D.
None of these
pH …………..
A.
B.
C.
D.
31.
Which of the following is the factors affecting on rate of corrosion.
A.
pH
B.
Temperature
C.
Moisture
D.
All of These
A.
pH
B.
C.
D.
32.
Chemical formula of Zeolite is
A.
Na2.Al2.XH2O
B.
Na2.Si2.O8.XH2O
C.
Na2.Al2.Si2.O8.XH2O
D.
Na2.Al2.Si2.O8.XH2SO4
A.
Na2.Al2.XH2O
B.
Na2.Si2.O8.XH2O
5/9
C.
Na2.Al2.Si2.O8.XH2O
D.
Na2.Al2.Si2.O8.XH2SO4
33.
Sigma bond is …….than pi bond.
A.
Weaker
B.
Stronger
C.
Equal
D.
None of These
............
A.
B.
C.
D.
34.
Unit of Viscosity is …….
A.
Pascal
B.
Poise
C.
Ohm
D.
volt
...............
A.
B.
C.
D.
35.
Which of following is used as elastomer?
A.
Polyethylene
B.
Bakelite
C.
PVC
D.
Buna-N
A.
B.
C.
PVC
D.
36.
Which is the symbol of Co-ordinate Co-valent bond
A.
B.
…….
C.
→
D.
...................
A.
B.
…….
C.
→
D.
37.
What is the pH of 0.1 M HCl solution?
A.
4
B.
3
C.
2
D.
1
0.1 M pH
A.
4
B.
3
C.
2
D.
1
38.
........ is Hot dipping process
A.
Galvanising
B.
Metal cladding
C.
Metal spraying
D.
Electroplating
................
A.
B.
C.
D.
39.
Hardness of Hard water/Saline water is …….PPM
A.
10
B.
50
C.
100
D.
Above 250
PPM
A.
10
B.
50
C.
100
D.
250
40.
......... Name of CH4
A.
Ethane
B.
Methane
C.
Propane
D.
Butane
CH4 ..........
A.
B.
C.
D.
41.
The mixture of oil and water is called ......... .
A.
Viscosity
B.
Mineral oil
6/9
C.
Emulsion
D.
Grease
.........
A.
B.
C.
D.
42.
The monomer of natural rubber is ……… .
A.
Styrene
B.
Isoprene
C.
Chloroprene
D.
Ethane
............
A.
B.
C.
D.
43.
The catalyst which retards the rate of chemical reaction is known as
A.
auto-catalyst
B.
negative catalyst
C.
catalytic poison
D.
Positive catalyst
.......
A.
B.
C.
D.
44.
Standard Atmospheric pressure is ……… atm
A.
100
B.
1
C.
50
D.
10
..... atm
A.
100
B.
1
C.
50
D.
10
45
The process of removal of electron is called .........
A.
Redox
B.
Oxidation
C.
Reduction
D.
Corrosion
.........
A.
B.
C.
D.
46.
The process of wet steam formation due to rapid boiling of water in boiler is known as
A.
Scaling
B.
Sludge formation
C.
Priming
D.
Foaming
A.
B.
C.
D.
47.
Which of the following is aliphatic compound?
A.
Methanol
B.
Benzene
C.
Phenol
D.
Benzoic acid
A.
B.
C.
D.
48.
Which type of lubricants are Grease?
A.
Solid
B.
Semi solid
C.
Liquid
D.
Gaseous
A.
B.
C.
D.
49.
Which of the following is not an Adhesive material?
A.
Starch paste
B.
Polythene
7/9
C.
Animal glue
D.
Epoxy resin
A.
B.
C.
D.
50.
Which of the following is the example of network solid?
A.
P4
B.
S8
C.
Diamond
D.
None of These
......
A.
P4
B.
S8
C.
D.
51.
1 F .................. Coulombs
A.
96.5
B.
9650
C.
96500
D.
965000
1 F ..................
A.
96.5
B.
9650
C.
96500
D.
965000
52.
Which of the following is a type of corrosion?
A.
Direct corrosion
B.
Electro chemical corrosion
C.
A B
D.
None of These
A.
B.
C.
A B
D.
53.
Which solution is used to regenerate acidic resin in ion exchange process?
A.
NaCl solution
B.
HCl solution
C.
NaOH solution
D.
H2SO4 solution
A.
NaCl
B.
HCl
C.
NaOH
D.
H2SO4
54.
What is the bond angle between the hybrid orbitals in Methane?
A.
1800
B.
1200
C.
109.50
D.
3600
A.
1800
B.
1200
C.
109.50
D.
3600
55.
Viscosity …… with the increase of Temperature
A.
Increase
B.
Decrease
C.
Remain same
D.
None of all
..........
A.
B.
C.
D.
56.
Bakelite is a ……… polymer
A.
Thermoplastic
B.
Thermosetting plastic
C.
A B Both
D.
None of these
એ...................
A.
B.
C.
A B
D.
57.
Wax blocks are used for ……… .
A.
Electro refining
B.
Electrotyping
C.
Electroplating
D.
Metal extraction
8/9
.........
A.
B.
C.
D.
58.
Temporary hardness in water is caused by
A.
Ca(HCO3)2
B.
CaCl2
C.
CaSO4
D.
MgSO4
A.
Ca(HCO3)2
B.
CaCl2
C.
CaSO4
D.
MgSO4
59.
Which of the following is Alkene?
A.
CH3-CH3
B.
CH2 CH2
C.
C6H6
D.
CH4
A.
CH3-CH3
B.
CH2 CH2
C.
C6H6
D.
CH4
60.
The substance used to stick two different surfaces firmly are called
A.
Elastomers
B.
Fibers
C.
Adhesives
D.
Metal
A.
B.
C.
D.
61.
Unit of Specific Conductivity …………..
A.
ohm-1.cm-1
B.
ohm.cm
C.
ohm
D.
mho
...............
A.
ohm-1.cm-1
B.
ohm.cm
C.
ohm
D.
mho
62.
Which method is used for Softening of water
A.
Ion exchange
B.
Sodalime
C.
Permutit
D.
All of these
A.
B.
C.
D.
63.
......... show Alcohol group
A.
CHO
B.
-COOH
C.
-OH
D.
-COOR
………
A.
CHO
B.
-COOH
C.
-OH
D.
-COOR
64.
Which polymeris used for making of blanket?
A.
Orlon
B.
Teflon
C.
Epoxy Resin
D.
Polythene
A.
B.
C.
D.
65.
…………. Is used in salt bridge.
A.
NaCl
B.
KCl
C.
HCl
D.
H2O
..................
A.
NaCl
B.
KCl
C.
HCl
D.
H2O
66.
Thermoplastic polymers are
9/9
A.
Linear polymers
B.
Crossedlink polymers
C.
A B both
D.
None of these
.............
A.
B.
C.
A B
D.
67.
Kw ......... .
A.
1.0 10-14 M2
B.
1.0 10-4 M2
C.
1.0 104 M2
D.
1.0 1014 M2
Kw ......... .
A.
1.0 10-14 M2
B.
1.0 10-4 M2
C.
1.0 104 M2
D.
1.0 1014 M2
68.
P.T.F.E is also known as
A.
Orlon
B.
Teflon
C.
Epoxy
D.
Polythene
…………. P.T.F.E
A.
B.
C.
D.
69.
There are ……….types of polymerization.
A.
1
B.
2
C.
4
D.
6
A.
1
B.
2
C.
4
D.
6
70.
……… is a co-polymer
A.
Nylon
B.
Polypropylene
C.
Polyethylene
D.
P.V.C
………..
A.
B.
C.
D.
P.V.C
Seat No.: Enrolment
GUJARAT TECHNOLOGICAL UNIVERSITY
DIPLOMA ENGINEERING- C to D Bridge Course Examination WINTER 2018
Subject Code: C300011 Date: 04-01-2019
Subject Name: BASIC CHEMISTRY GROUP-4)
Time: 02:30 PM TO 04:00 PM Total Marks: 70
Instructions:
1. Attempt all questions.
2. Make suitable assumptions wherever necessary.
3. Each question is of 1 mark.
4. Use of only simple calculator is permitted. (Scientific/Higher Version not allowed).
5. English version is authentic
o.
Question Text and Option.
1.
The catalysis in which reagents and catalyst are in different physical state is known as
A.
Heterogeneous Catalysis
B.
Homogeneous Catalysis
C.
Catalytic Poison
D.
Catalytic Promoter
A.
B.
C.
D.
2.
PH POH
A.
14
14
7
C.
10
D.
0
PH POH
A.
14
14
7
C.
10
D.
0
3.
Corrosion increases with ......... in moisture in atmosphere.
A.
Increase
B.
Decrease
C.
remains same
D.
None of these
.........
A.
B.
C.
D.
4.
1 PPM
A.
1
B.
0.01
C.
0.1
D.
10
1 =..............
A.
1
B.
0.01
C.
0.1
D.
10
5.
………….is an aromatic compound?
A.
Methane
B.
Ethane
C.
Benzene
D.
Ethyne
...........
A.
B.
C.
D.
6.
Which of the following is the type of lubricants?
A.
Solid lubricants
B.
Semi solid lubricants
C.
Liquid lubricants
D.
All of These
2/9
A.
B.
C.
D.
7.
Monomer of Polythene is ……..
A.
CH4
B.
CH2=CH2
C.
CH3
D.
CHCl
...............
A.
CH4
B.
CH2=CH2
C.
CH3
D.
CHCl
8.
The chemical bond formed by transfer of electrons is called………
A.
Ionic bond
B.
Covalent bond
C.
Hydrogen bond
D.
Metallic bond
A.
B.
C.
D.
9.
PH of basic solution is
A.
B.
C.
D.
14
pH...................
A.
B.
C.
D.
14
10.
.......... Metal is used in Tinning.
A.
Zn
B.
Tn
C.
Sn
D.
Fe
A.
Zn
B.
Tn
C.
Sn
D.
Fe
11.
Molecular weight of CaCl2 is ………..gm/mol
A.
100
B.
111
C.
95
D.
120
CaCl2 ........
A.
100
B.
111
C.
95
D.
120
12.
Compound containing single bond has ……… Hybridization.
A.
sp
B.
sp2
C.
sp3
D.
None of these
A.
sp
B.
sp2
C.
sp3
D.
13.
………. Is used to reduce the friction in machine.
A.
Polymer
B.
Lubricant
C.
Catalyst
D.
Metal
..........
A.
B.
C.
D.
14.
………..is used in vulcanisation of Rubber.
A.
S
B.
C
C.
Al
D.
N
..........
A.
S
B.
C
C.
Al
D.
N
15.
…… has FCC arrangement.
A.
Fe
B.
Cd
3/9
C.
Cr
D.
Au
………. FCC
A.
Fe
B.
Cd
C.
Cr
D.
Au
16.
The potential of standard electrode hydrogen electrode is ………. volt
A.
100
B.
0
C.
50
D.
25
A.
100
B.
0
C.
50
D.
25
17.
……… corrosion is observed in rivets and bolts.
A.
Water-line
B.
Pitting
C.
Crevice
D.
Atmospheric
..................
A.
B.
C.
D.
18.
………. Is used for Estimation of hardness of water.
A.
EDTA
B.
DDT
C.
COOH
D.
EBT
...............
A.
EDTA
B.
DDT
C.
COOH
D.
EBT
19.
CnH2n+2 is general formula of ……..series
A.
Alkyne
B.
Alkene
C.
Alkane
D.
Aromatic
CnH2n+2 ............
A.
B.
C.
D.
20.
Cloud point of good lubricant should be
A.
Moderate
B.
High
C.
Low
D.
Too High
............
A.
B.
C.
D.
21.
Nylon6,6 is formed by
A.
Vulcanization
B.
Condensation polymerization
C.
Addition polymerization
D.
Galvanisation
6,6 .........
A.
B.
C.
D.
22.
O2 molecule possesses ......... covalent bonds.
A.
1
B.
2
C.
3
D.
4
O2 …………
A.
1
B.
2
C.
3
D.
4
23.
pH ……….
A.
log
B.
log
C.
log
D.
None of these
pH ……….
A.
log
B.
log
C.
log
D.
24.
Destruction or decay of metal by chemical or electrochemical reaction is known as …………
4/9
A.
Oxidation
B.
Reduction
C.
Corrosion
D.
Redox
...
A.
B.
C.
D.
25.
The water which give lather with soap is called a water
A.
Soft
B.
Hard
C.
Pure
D.
Impure
.........
A.
B.
C.
D.
26.
At the end of distillation of coal tar, ……… is obtained.
A.
Light oil
B.
Heavy oil
C.
Anthracene oil
D.
None of these
............
A.
B.
C.
D.
27.
............. is used for measurement of Fire point and Flash point.
A.
Viscometer
B.
Voltmeter
C.
Pensky marten
D.
Borometer
..................
A.
B.
C.
D.
28.
Polyvenyl chloride is known as………..
A.
PVC
B.
PVL
C.
PVCD
D.
PV
.........
A.
PVC
B.
PVL
C.
PVCD
D.
PV
29.
Which catalyst is used for the manufacture of ammonia?
A.
Fe
B.
Ni
C.
Pt
D.
Mo
........
A.
Fe
B.
Ni
C.
Pt
D.
Mo
30.
Buffer solution is the solution whose pH …………..
A.
Increases
B.
Remains constant
C.
Decreases
D.
None of these
pH …………..
A.
B.
C.
D.
31.
Which of the following is the factors affecting on rate of corrosion.
A.
pH
B.
Temperature
C.
Moisture
D.
All of These
A.
pH
B.
C.
D.
32.
Chemical formula of Zeolite is
A.
Na2.Al2.XH2O
B.
Na2.Si2.O8.XH2O
C.
Na2.Al2.Si2.O8.XH2O
D.
Na2.Al2.Si2.O8.XH2SO4
A.
Na2.Al2.XH2O
B.
Na2.Si2.O8.XH2O
5/9
C.
Na2.Al2.Si2.O8.XH2O
D.
Na2.Al2.Si2.O8.XH2SO4
33.
Sigma bond is …….than pi bond.
A.
Weaker
B.
Stronger
C.
Equal
D.
None of These
............
A.
B.
C.
D.
34.
Unit of Viscosity is …….
A.
Pascal
B.
Poise
C.
Ohm
D.
volt
...............
A.
B.
C.
D.
35.
Which of following is used as elastomer?
A.
Polyethylene
B.
Bakelite
C.
PVC
D.
Buna-N
A.
B.
C.
PVC
D.
36.
Which is the symbol of Co-ordinate Co-valent bond
A.
B.
…….
C.
→
D.
...................
A.
B.
…….
C.
→
D.
37.
What is the pH of 0.1 M HCl solution?
A.
4
B.
3
C.
2
D.
1
0.1 M pH
A.
4
B.
3
C.
2
D.
1
38.
........ is Hot dipping process
A.
Galvanising
B.
Metal cladding
C.
Metal spraying
D.
Electroplating
................
A.
B.
C.
D.
39.
Hardness of Hard water/Saline water is …….PPM
A.
10
B.
50
C.
100
D.
Above 250
PPM
A.
10
B.
50
C.
100
D.
250
40.
......... Name of CH4
A.
Ethane
B.
Methane
C.
Propane
D.
Butane
CH4 ..........
A.
B.
C.
D.
41.
The mixture of oil and water is called ......... .
A.
Viscosity
B.
Mineral oil
6/9
C.
Emulsion
D.
Grease
.........
A.
B.
C.
D.
42.
The monomer of natural rubber is ……… .
A.
Styrene
B.
Isoprene
C.
Chloroprene
D.
Ethane
............
A.
B.
C.
D.
43.
The catalyst which retards the rate of chemical reaction is known as
A.
auto-catalyst
B.
negative catalyst
C.
catalytic poison
D.
Positive catalyst
.......
A.
B.
C.
D.
44.
Standard Atmospheric pressure is ……… atm
A.
100
B.
1
C.
50
D.
10
..... atm
A.
100
B.
1
C.
50
D.
10
45
The process of removal of electron is called .........
A.
Redox
B.
Oxidation
C.
Reduction
D.
Corrosion
.........
A.
B.
C.
D.
46.
The process of wet steam formation due to rapid boiling of water in boiler is known as
A.
Scaling
B.
Sludge formation
C.
Priming
D.
Foaming
A.
B.
C.
D.
47.
Which of the following is aliphatic compound?
A.
Methanol
B.
Benzene
C.
Phenol
D.
Benzoic acid
A.
B.
C.
D.
48.
Which type of lubricants are Grease?
A.
Solid
B.
Semi solid
C.
Liquid
D.
Gaseous
A.
B.
C.
D.
49.
Which of the following is not an Adhesive material?
A.
Starch paste
B.
Polythene
7/9
C.
Animal glue
D.
Epoxy resin
A.
B.
C.
D.
50.
Which of the following is the example of network solid?
A.
P4
B.
S8
C.
Diamond
D.
None of These
......
A.
P4
B.
S8
C.
D.
51.
1 F .................. Coulombs
A.
96.5
B.
9650
C.
96500
D.
965000
1 F ..................
A.
96.5
B.
9650
C.
96500
D.
965000
52.
Which of the following is a type of corrosion?
A.
Direct corrosion
B.
Electro chemical corrosion
C.
A B
D.
None of These
A.
B.
C.
A B
D.
53.
Which solution is used to regenerate acidic resin in ion exchange process?
A.
NaCl solution
B.
HCl solution
C.
NaOH solution
D.
H2SO4 solution
A.
NaCl
B.
HCl
C.
NaOH
D.
H2SO4
54.
What is the bond angle between the hybrid orbitals in Methane?
A.
1800
B.
1200
C.
109.50
D.
3600
A.
1800
B.
1200
C.
109.50
D.
3600
55.
Viscosity …… with the increase of Temperature
A.
Increase
B.
Decrease
C.
Remain same
D.
None of all
..........
A.
B.
C.
D.
56.
Bakelite is a ……… polymer
A.
Thermoplastic
B.
Thermosetting plastic
C.
A B Both
D.
None of these
એ...................
A.
B.
C.
A B
D.
57.
Wax blocks are used for ……… .
A.
Electro refining
B.
Electrotyping
C.
Electroplating
D.
Metal extraction
8/9
.........
A.
B.
C.
D.
58.
Temporary hardness in water is caused by
A.
Ca(HCO3)2
B.
CaCl2
C.
CaSO4
D.
MgSO4
A.
Ca(HCO3)2
B.
CaCl2
C.
CaSO4
D.
MgSO4
59.
Which of the following is Alkene?
A.
CH3-CH3
B.
CH2 CH2
C.
C6H6
D.
CH4
A.
CH3-CH3
B.
CH2 CH2
C.
C6H6
D.
CH4
60.
The substance used to stick two different surfaces firmly are called
A.
Elastomers
B.
Fibers
C.
Adhesives
D.
Metal
A.
B.
C.
D.
61.
Unit of Specific Conductivity …………..
A.
ohm-1.cm-1
B.
ohm.cm
C.
ohm
D.
mho
...............
A.
ohm-1.cm-1
B.
ohm.cm
C.
ohm
D.
mho
62.
Which method is used for Softening of water
A.
Ion exchange
B.
Sodalime
C.
Permutit
D.
All of these
A.
B.
C.
D.
63.
......... show Alcohol group
A.
CHO
B.
-COOH
C.
-OH
D.
-COOR
………
A.
CHO
B.
-COOH
C.
-OH
D.
-COOR
64.
Which polymeris used for making of blanket?
A.
Orlon
B.
Teflon
C.
Epoxy Resin
D.
Polythene
A.
B.
C.
D.
65.
…………. Is used in salt bridge.
A.
NaCl
B.
KCl
C.
HCl
D.
H2O
..................
A.
NaCl
B.
KCl
C.
HCl
D.
H2O
66.
Thermoplastic polymers are
9/9
A.
Linear polymers
B.
Crossedlink polymers
C.
A B both
D.
None of these
.............
A.
B.
C.
A B
D.
67.
Kw ......... .
A.
1.0 10-14 M2
B.
1.0 10-4 M2
C.
1.0 104 M2
D.
1.0 1014 M2
Kw ......... .
A.
1.0 10-14 M2
B.
1.0 10-4 M2
C.
1.0 104 M2
D.
1.0 1014 M2
68.
P.T.F.E is also known as
A.
Orlon
B.
Teflon
C.
Epoxy
D.
Polythene
…………. P.T.F.E
A.
B.
C.
D.
69.
There are ……….types of polymerization.
A.
1
B.
2
C.
4
D.
6
A.
1
B.
2
C.
4
D.
6
70.
……… is a co-polymer
A.
Nylon
B.
Polypropylene
C.
Polyethylene
D.
P.V.C
………..
A.
B.
C.
D.
P.V.C
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