Multiple Choice QuestionsThe joint between the head and the upper jaw is an example of
pelvic joint
fixed joint
ball and socket joint
hinged joint
There are two planets in our solar system whose periods of revolution around the Sun are less than those of our Earth, but their periods of rotation are more as compared to those of the Earth. These planets are
Mars and Jupiter
Mercury and Saturn
Mercury and Venus
Uranus and Neptune
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.
Convection
The method of transfer of heat when warmer air or liquid which has faster-moving molecules, making it less dense, rises while the cooler air or liquid around it takes the vacant space, is called convection.
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
In our mouth, the arrangement of different types of teeth from front to back is
incisor-canine-premolar-molar
canine-incisor-molar-premolar
canine-incisor-premolar-molar
incisor-canine-molar-premolar
In plants and trees, water goes up high due to suction pull. Which of the following phenomena causes this suction pull?
Transpiration
Photosynthesis
Respiration
Absorption
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