[Quiz] Science Physics - Free Online Test - 5 (8th STD)

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TNPSC Free Online Test by TNPSC GURU.in
Subject	Indian Economy
Exam Portions	Tamil Nadu Samacheer Kalvi 8th Std Term 2&3 – Science Physics Full
TNPSC Science Physics Test Series No: 5
No of Questions	15
Duration	10 Min
Difficulty Level	Easy
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1. While boiling water using wood fire, which of the following process/es can be observed?
   
   1.  Convection
   2.  Conduction
   3.  Radiation and Convection
   4.  Radiation , Convection, conduction
   
   
2. Galvanised Iron is a combination of
   
   1.  Iron + Copper
   2.  Iron + Silver
   3.  Iron + Galina
   4.  Iron + Zinc
   
   
3. Arrange the following state of matters in ascending order in terms of Volume of expansion while heating.
   
   1.  Solid - Liquid - Gas
   2.  Liquid - Gas - Solid 
   3.  Gas - Liquid - Solid 
   4.  Gas - Solid - Liquid
   
   
4. An electroscope is used to .
   
   1.  Detect degree of lens
   2.  Measure Electric power
   3.  See Electric Current
   4.  Detect electric charges
   
   
5. Method in which the Charging a body is done by without touching is said to be-
   
   1.  Charging by Friction
   2.  Charging by conduction
   3.  Charging by scratching
   4.  Charging by Induction
   
   
6. What kind of wiring circuit is usually used in our houses ?
   
   1.  Series circuit
   2.  Parallel circuit
   3.  Series or Parallel circuit
   4.  Linear Circuit
   
   
7. Method in which the Charging a body is done by touching is said to be
   
   1.  Charging by Friction
   2.  Charging by conduction
   3.  Charging by scratching
   4.  Charging by Induction
   
   
8. Method in which the Charging a body is done by rubbing is said to be
   
   1.  Charging by Friction
   2.  Charging by Conduction
   3.  Charging by Induction
   4.  All the above
   
   
9. As per the law of reflection
   
   1.  The angle of incidence is greater than the angle of reflection
   2.  The angle of incidence is less than the angle of reflection
   3.  The angle of incidence is equal to the angle of reflection
   4.  The angle of incidence is greater or less than the angle of reflection
   
   
10. The medium in which the light can travel
    
    1.  Gas, Liquid
    2.  Solid, Liquid
    3.  Solid, Liquid, Gas
    4.  Solid, Liquid, Gas, Vacuum
    
    
11. Select the hearing range for the normal human beings in terms of frequency
    
    1.  20 Hz - 200 K Hz
    2.  20 K Hz - 200000 Khz
    3.  20 Hz - 20000 Khz
    4.  20 Hz - 20000 Hz
    
    
12. Select the frequency range of ultrasonic waves
    
    1.  below 20 K Hz
    2.  above 200 Kz
    3.  above 200 K Hz
    4.  above 20K Hz
    
    
13. Periscope is usually used in
    
    1.  Submarines
    2.  Radar
    3.  Fibre optics cables
    4.  None of the above
    
    
14. When light rays passes from one medium to another, there will be slight bending of light it is said to be
    
    1.  deflection
    2.  dispersion
    3.  reflection
    4.  refraction
    
    
15. Optical fibre network woks on the principle of
    
    1.  scattering of light
    2.  dispersion
    3.  refraction
    4.  total internal reflection
    
    

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