Normal type of MCQ with one correct option
Deuterium is
Normal type of MCQ with one correct option
Law of constant composition is same as that of
law of conservation of energy
law of conservation of mass
law of definite proportion
law of multiple proportion
Normal type of MCQ with one correct option
Which of the following statements regarding Bohr’s model is not correct?
bohr introduces the idea of stationary states
energy shells have definite energy .
nucleus is situated when an electron
energy is evolved when an electrons jumps from lower shell to higher shell.
Normal type of MCQ with one correct option
Which of the following is not correct?
isotopes of an elements have same no. of protons.
isotopes of an element have same no. of protons
isotopes of an element have same chemical proportion
isotopes of an elements have same mass number
Normal type of MCQ with one correct option
The no. of oxygen atoms in 2.2gm of CO2 is
Normal type of MCQ with one correct option
The valence of the element with atomic no. 12 is
1
2
3
4
Normal type of MCQ with one correct option
Which of the following is the biggest unit of energy?
Joule
Kilowatt hour
erg
Electron volt
Normal type of MCQ with one correct option
One kWh is equal to
Normal type of MCQ with one correct option
If the speed of a motor car becomes six times. Then the kinetic energy becomes
6 times
36 times
12 times
24 times
Normal type of MCQ with one correct option
The spring of the winding knob of a watch has
mechanical energy
only kinetic energy
only potential energy
kinetic or potential energy
Normal type of MCQ with one correct option
A body is moved through a distance of 5 m in the following different ways. Maximum work is done when the body is
pushed over an inclined plan
raised vertically upward
pushed over smooth roller
pushed on a plan horizontal surface
Normal type of MCQ with one correct option
In the above problem ,minimum work is done when the body is
pushed over an inclined plan
raised vertically upwards
pushed over smooth rollers
pushed on a plan horizontal surface
Normal type of MCQ with one correct option
A truck and a car are moving on a smooth level road such that the kinetic energy associated with them is same. Brakes are applied simultaneously in both of them such that equal retarding forces are produced in them. Which one will cover a greater distance before it stops?
car
truck
both will cover the same distance
nothing can be decided
work
kinetic energy
potential energy
all the above
Normal type of MCQ with one correct option
The kinetic energy of body is increased most by doubling its
mass
density
weight
speed