More Classes
5th Class
6th Class
7th Class
8th Class
9th Class
10th Class
11th Class
12th Class
NAT I
NAT II
CSS
IQ
General Knowledge
MDCAT
ECAT
GAT General
GAT Subject
Other Links
Go to Home
Online Tests
Physics 9th Class English Medium Unit 9 Online Test MCQs With Answers
Question # 1
What gas behaves as glass or polythene to radiation:
Choose an answer
Nitrogen
Hydrogen
Carbon di oxide
Methane
Previous
Skip
Next
Question # 2
Glass and transparent polythene sheets allow radiations of wavelength to pass through them:
Choose an answer
Long
Short
Medium
All
Previous
Skip
Next
Question # 3
If heat Q flows in time 't' through some metal then rate of flow of heat is defined as
Choose an answer
Flow of heat = 2Qt
Flow of heat = Q/t
Flow of heat = t/Q
Flow of heat = Qt
Previous
Skip
Next
Question # 4
All are conductors except:
Choose an answer
Copper
Wires
Steel
Wood
Previous
Skip
Next
Question # 5
There are ways to transfer the heat from one place to another.
Choose an answer
1
2
3
4
Previous
Skip
Next
Question # 6
Unit of thermal conductivity is .
Choose an answer
Wmk
W m
-1
K
-1
Wm
None of these
Previous
Skip
Next
Question # 7
The main source of energy n the universe is:
Choose an answer
Moon
Stars
Sun
Planets
Previous
Skip
Next
Question # 8
There are ______ modes of transfer of heat:
Choose an answer
1
2
3
4
Previous
Skip
Next
Question # 9
Room are heated using gas heaters by:
Choose an answer
Conduction only
Convection and radiation
Radiation only
Convection only
Previous
Skip
Next
Question # 10
The brids stretch out their wings and circle in the rising currents of hot air called
Choose an answer
conduction
convection
radiation
thermals
Previous
Skip
Next
Question # 11
Which gas behaves as glass or polythene to radiation:
Choose an answer
Nitrogen
Hydrogen
Carbon di oxide
Methane
Previous
Skip
Next
Question # 12
The quantity of heat absorbed by the body depends upon:
Choose an answer
Colour of surface
Nature of surface
Shape of surface
Both a and b
Previous
Skip
Next
Question # 13
The process in which heat is transfer due to actual movement of molecule is called.
Choose an answer
Conduction
radiation
Convection
All of these
Previous
Skip
Next
Back