Which one of the following places in India is most likely to be affected by cyclones?
Udaipur
Badrinath
Puri
Amritsar
The air near a heat source gets hot and rises. The air from the sides comes into taking its place. This is the way in which the air gets heated by oil heaters. What is this process called?
Convection
Radiation
Diffusion
Conduction
A book is lying at rest on the surface of a table. Which one of the following statements is true about the force (s) acting on it?
There is a pair of balanced forces acting on it
Only gravitational force is acting on it
Only frictional force is acting on it
There is no force acting on it
Read the given statements and select the correct option.
Statement Bis true and Statement A is false
Both Statements A and B are false
Both Statements A and Bare true
Statement A is true and Statement Bis false
The pressure in a fluid that is at rest
acts only in downward direction
acts only sideways
acts in all directions
acts only in vertical direction
Which of the following statements are true about image formation in a plane mirror?
B, C and D
A, C and D
All of these
A, B and C
A.
B, C and D
Properties of the image formed by a plane mirror :
So, B, C, and D are true.
Read the following examples from daily life and select the appropriate option.
B is a physical change
A and B are physical changes
All are chemical changes
A and B represent chemical changes
A student burns a magnesium ribbon in air and dissolves the ash of the ribbon left after burning in distilled water. On pouring one drop each of this solution, first in blue litmus and then in red litmus solution, he would observe that
blue litmus turns red, whereas the red litmus remains red
blue litmus turns red, whereas the red litmus turns blue
blue litmus turns colorless, whereas the red litmus remains red
blue litmus remains blue, whereas the red litmus turns blue
"Copper cannot displace zinc from its salt solution. Give the reason."
The following reasons are given by Class VIII students
Select the correct reason(s) from the reasons given by Class VIII students.
Only A
C and D
Only B
A and D