Question

1. An electroscope can be used for
1 point
creating lightning
detection of electric charge
charging and object
protection against lightning
2. seismology is the branch of science concerned with
1 point
earthquakes
floods
storms
tides
3. sound travels fastest in
1 point
air
water
diamond
glass
4. the process of transferring charge from a charged body to earth is called
1 point
transferring
processing
charging
earthing
5. which instrument is used to measure earthquake ?
1 point
polygraph
richter scale
seismograph
none of the above
6. 1 Hertz is equal to
1 point
1 vibration per minute
10 vibrations per minute
60 vibrations per minute
100 vibrations per second
7. In electrolytic cell, the anode is the
1 point
positive ion
negative ion
negative electrode
positive electrode
8. Pitch of sound is determined by
1 point
frequency
amplitude
loudness
speed
9. Pure or distilled water is
1 point
poor conductor
bad conductor
both a and b
none of the above
10. cochlea is a part of
1 point
hearing organ
sound producing organ
mascular organ
air pollution
11. A solution of common salt dissolved in water will have
1 point
sodium and copper ions
chloride and water ions
sodium and chloride ions
sodium and water ions
12. The lithosphere consists of
1 point
earth's crust and upper mantle
earth's crust and inner mantle
Earth's mantle and core
earth's core and crust
13. sound of which of these frequencies would be audible for us
1 point
15 Hz
50000 Hz
2000 Hz
5 Hz
14. Sound is a kind of
1 point
energy
force
work
both a and b
15. which of the following does not conduct electricity
1 point
sugar solution
vinegar solution
lemon juice
caustic soda solution
16. what is the nature of force which is experienced between an electron and a proton
1 point
force of repulsion
force of attraction
no force
both a and b
17. the place inside the earth's crust where the earthquake is generated is known as ______ of the earthquake
1 point
focus
epicenter
disc
tectonic plate
18. Electroplating is based on
1 point
heating effect of electric current
magnetic effect of electric current
physical effect of electric current
chemical effect of electric current
19. static electricity charges can be produced by
1 point
rubbing
heating
beating
all of the above
20. when a current flows through a conducting solution then the electrode connected to the negative terminal of the battery is called
1 point
anode
cathode
rod
none of these
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Answer 1

1.Ans Detection of Electric Charge
2.Ans Earthquakes