List of practice Questions

Which of the following is responsible for excretion of dilute urine ?
It is present in rod cells and useful in night vision
Which element is required in the germination of pollen grain?
Which of the following is used as an oxidising agent in hybrid fuel?
Deficiency of vitamin $H$ causes
Select the basic dye from the following
Cellulose is soluble in
These W.B.C.s make maximum count amongst leucocytes ?
In which disease, due to flattening of tracheal vessels, alveoli are deprived of oxygen ?
Which one of the following is a conjugated protein?
The wavelength of the first spectral line of sodium is $5896 \,??. The first excitation potential of sodium atom will be $\left(h=6.63 \times 10^{-34} \,Js \right)$
If the coefficient of static friction between the tyres and road is $0.5$, what is the shortest distance in which an automobile can be stopped when travelling at $72\,km/h$?
Half-lives of two radioactive substances A and B are respectively 20 min and 40 min. Initially the samples of A and B have equal number of nuclei. After 80 min the ratio of remaining number of A and B nuclei is
Compressional wave pulses are sent to the bottom of sea from a ship and the echo is heard after $2 s$. If bulk modulus of elasticity of water is $2 \times 10^{9} \,N / m ^{2}$ and mean temperature is $4^{\circ} C$, the depth of the sea will be
The chemical formula of plaster of Paris is
Which one of the following has square planar structure?
Zinc and cold dil. $ HNO_3$ reacts to produce
Tincture of iodine is
Methyl- $\alpha$ -D-glucoside and methyl $\beta$ -D-glucoside are
Alternating current is transmitted to take places
The magnetic moment has dimensions of
A gas bubble formed from an explosion under water oscillates with a period $T$ proportional to $P^{a} d^{b} E^{c}$, where $P$ is pressure, $d$ is the density of water and $E$ is the total energy of explosion. The value of $a, b, c$ are
A particle moving with a uniform acceleration travels $24\, m$ and $64\,m$ in the first two consecutive interval of $4s$ each. Its initial velocity will be
A meter stick is held vertically with one end on the floor and is then allowed to fall. Assuming that the end on the floor the stick does not slip, the velocity of the other end when it hits the floor, will be
A body is projected at such angle that the horizontal range is three times the greatest height. The angle of projection is