Worksheets8Class Electrical Conductivity of Liquids Test 2
Total questions: 20
Worksheet time: 20mins
Name
Class
Date
1.
Among Electro typing,Electroplating,Electroprinting,Galvanizing __________ method is used in ornamentation and decortion
a)
Electro typing
b)
Electroplating
c)
Electroprinting
d)
Galvanizing
2.
Electroplating is possible through
a)
Electrolysis
b)
Chemical process
c)
Dissolving
d)
Filtration
3.
Distilled water is
a)
Electric conductor
b)
semiconductor
c)
Insulator
d)
Resistor
4.
In an electrolyte, these are responsible for the flow of electric current
a)
Movement of protons
b)
Movement of electrons
c)
Movement of neutrons
d)
Movement of ions
5.
Current flows from ____________ terminal to ______________ terminal in an electrolyte
a)
Positive to positive
b)
Positive to Negative
c)
Negative to Negative
d)
Negative to Positve
6.
Processed food items are preserved in _____________ coated iron cans
a)
Zinc
b)
Gold
c)
Tin
d)
Magnesium
7.
In LEDs, the longer lead (wire) is always connected to the _______ terminal
a)
negative
b)
neutral
c)
positive
d)
Any terminal
8.
The scientist who made first cell
a)
Alessandro Volta
b)
Luigi Galvani
c)
Pierre de Fermat
d)
Newton
9.
The longer lead of an LED is connected to ___________ terminal of the battery
a)
Positive
b)
Negative
c)
Ground
d)
None
10.
The ___________ lead of an LED is connected to positive terminal of the battery
a)
Long
b)
Short
c)
No lead is conneced
d)
Leads are connected to ground
11.
A greenish blue spot is seen on potato around the wire connceted to __________ terminal of battery
a)
Positive
b)
Negative
c)
Ground
d)
No colour is seen
12.
Volta took this acid as electrolyte in his first cell
a)
Hydrochloric acid
b)
Sulphuric acid
c)
Nitric acid
d)
Carbonic acid
13.
The short lead of an LED is connected to ___________ terminal of the battery
a)
Positive
b)
Negative
c)
Ground
d)
None
14.
The scientist who stated that all living things contained electricity
a)
Alessandro Volta
b)
Luigi Galvani
c)
Pierre de Fermat
d)
Newton
15.
The ___________ lead of an LED is connected to negative terminal of the battery
a)
Long
b)
Short
c)
No lead is conneced
d)
Leads are connected to ground
16.
Length of all leads of an LED are
a)
equal
b)
not eqlual
c)
only lead will be there
d)
All three are equal
17.
How many leads are there to an LED
a)
1
b)
2
c)
3
d)
4
18.
Volta took these plates in sulphuric acid in his first cell
a)
Iron and Magnesium
b)
Magnesium and Copper
c)
Copper and Zinc
d)
Zinc and Iron
19.
The scientist who prepared first cell by dipping Iron and Zinc plates in sulphuric acid is
a)
Alessandro Volta
b)
Luigi Galvani
c)
Pierrre de Fermat
d)
No scientist
20.
LED stands for
a)
Low Electrical Device
b)
Least Electronic Device
c)
Lusture Emitting Device
d)
Light Emiting Diode
100 %
