List of practice Questions

In a junction diode the holes due to:
In 1984, Bhopal gas tragedy was caused due to leakage of
D.D.T.is
When a thin metal plate is placed in the path of one of the interfering beams of light
The number of ?
Oxidation number of ???
Gammexane is :
??omma?
A positive carbylamine test is given by
Which of the following is used as a moderator in nuclear reaction?
Boolean algebra is essentially based on
Diode is used as a/an
Energy is not carried by which of the following wave?
In Young?s experiment, the monochromatic light is used to illuminate two slits $A$ and $B$ as shown. Interference fringes are observed on a screen placed in front of the slits. Now if a thin glass plate is placed normally in the path of beam coming from the slit $A$, then
A particle of mass $ m $ moving with velocity $ v $ collides with a stationary particle of mass $ 2m $ . The speed of the system, will be:
In n-type semiconductors, majority charge carriers are
The reaction responsible for the production of light energy from the sun is
Kidney of adult reptiles are
An animal, which is diploblastic and radially symmertrical is:
In sponges, circulation of waler in flagellated chamber is facilitated by:
Two identical circular loops of metal wire are lying on a table without touching each other. Loop A carries a current which increases with time. In response, the loop B
The ratio of the speed of sound in nitrogen gas to that in helium gas, at 300 K. is
The oxidation number of sulphur in $S_8 , S_2F_2, H_2S$ respectively, are
The normality of 0.3 M phosphorus acid $(H_3PO_3)$ is
The coordination number of metal crystallising in a hexagonal close packing is