List of practice Questions

Hydrogen bomb is based upon
Stop codons are
Growth of pollen tube towards embryo sac is
1 : 2 : 1 phenotypic and genotypic ratio is found in
The back bone of RNA consists of which of the following sugar?
From outer to inside the sequence of three bones present in the middle ear of mammals is
Root hair absorbs water from soil through
When a charged particle moving with velocity $\vec{ v }$ is subjected to a magnetic field of induction $\vec{ B }$ the force on it is non-zero. This implies that
A particle moves along a straight line $OX$. At a time $t$ (in second) the distance $x$ (in metre) of the particle from $O$ is given by $ x=40+12t-t^{3} $ How long would the particle travel before coming to rest?
Which of the following circular rods, (given radius $r$ and length $l$ each made of the same material and whose ends are maintained at the same temperature will conduct most heat?
For a satellite moving in an orbit around the earth, the ratio of kinetic energy to potential energy is
$300 \,J$ of work is done in sliding a $2\, kg$ block up an inclined plane of height $10 \,m$. Taking $ g=10\,\,m/{{s}^{2}}, $ work done against friction is
Interference was observed in an interference chamber when air was present. Now, the chamber is evacuated and if the same light is used, a careful observation will show
The time of reverberation of a room $A$ is one second. What will be the time (in seconds) of reverberation of a room, having all the dimensions double of those of room $A$?
In refraction, light waves are bent on passing from one medium to the second medium, because, in the second medium
Which of the following sequences is truly a systemic circulation pathway?
Two similar circular loops carry equal currents in the same direction. On moving the coils further apart, the electric current will
The potential difference between $A$ and $B$ in the following figure is
The chemical name of anisole is
In the diagram of the lateral view of the human brain, parts are indicated by alphabets. Choose the answer in which these alphabets have been correctly matched with the parts which they indicate
Blue colour of sea water is due to
A string vibrates with a frequency of $200 \,Hz$. When its length is doubled and tension is altered, it begins to vibrate with a frequency of $300\, Hz$. The ratio of the new tension to the original tension is
Transformation of the early reducing atmosphere of the earth into an oxidizing atmosphere was mainly due to the activities of
The problem of necrosis and gradual senescence while performing tissue culture can be overcome by
Notochord, skeletal system and dermis of the skin are the derivatives of