Can we use String in switch case?

What are different ways to create String Object?

Which among the following is the fundamental quantity
?
(a) Volume
(b) Time
(c) Velocity
(d) Force

For which Diode is used ?
(a)modulation
(b)oscillation
(c)amplification
(d)purification

For which Diode is used ?
(a)modulation
(b)oscillation
(c)amplification
(d)purification

Which among the following types of coal produces most
heat per unit?
(a) Coal
(b) Lignite
(c) Anthracite
(d) Pit

Which among the following waves is used for
communication by artificial satellites ?
(a)Microwaves
(b)Radio waves
(c)A. M.
(d)Frequency of 101 series

What is found in frequency modulation?
(a)Fixed frequency
(b)Fixed dimension
(c)Change In frequency and dimension
(d)Change in dimension only
Q6.
When the speed of car is doubled

When the speed of car is doubled then what will be the
braking force of the car to stop it in the same distance ?
(a) four times
(b) two times
(c) half
(d) one fourth
 

If the diameter of a capillary is doubled then the rise of
water in it will be
(a) two times
(b)half
(c) four times
(d) no change

Why the needle of iron swims on Water surface when it
is kept gently ?
(a)It will remain under the water when it will displace
more water than its weight
(b)the density of needle is less than that of water
(c)due to surface tension
(d)due to its shape