List of practice Questions

Suppose a tunnel is dug along the diameter of earth. A particle is dropped from a point at a distance $h$ directly above the tunnel. The earth's density is assumed uniform and the friction is neglected, then
'Taxon' is the unit of a group of
The breeding place of Flamingo (Hansawar) in India is most likely
Which one of the following is a micronutrient for plants?
In a reversible reaction, the energy of activation of the forward reaction is 50 kcal. The energy of activation for the reverse reaction will be
Sucrose in water is dextrorotatoiy, $[\alpha]_D$ =+ 66.4$^{\circ}$ when boiled with dil. HCl, the solution becomes leavo rotatory, $[\alpha]_D$ = - 39.9$^{\circ}$. In this process the sucrose breaks into
The structure and hybridisation of $Si(CH_3)_4$ is
Which one of the following ions will be smallest in size?
A \(10\ eV\) electron is circulating in a plane at right angles to a uniform field at magnetic induction \({10}^{- 4}\ Wb/m^2\) (= \(1.0\) gauss), the orbital radius of electron is
A body dropped from a height h with initial velocity zero, strikes the ground with a velocity 3 m/s. Another body of same mass dropped from the same height h with an initial velocity of 4 m/s. The final velocity of second mass, with which it strikes the ground is
The energy stored in a capacitor of capacity C and potential V is given by
The enzymes hexokinase which catalyses glucose to glucose-6- phosphate in glycolysis is inhibited by glucose-6-phosphate. This is an example of
The 'niche' of a species is meant for
The role of double fertilization in angiosperms is to produce
Process by which water enters in the roots due to diffusion, is termed as
Lampbrush chromosomes occur during
The given reaction, $ {2FeCl3 + SnCl2 -> 2FeCl2 + SnCl4}$ is an example of
The smallest plant family 'Gymnosperm' has how many species?
At the end of glycolysis, six carbon compound ultimately changes into
The interferons are
The nephridia in earthworm are analogous to
The correct order of $ N - O $ bond lengths in $NO, NO_2^-, NO_3^- $ and $ N_2O_4 $ is
The IUPAC name of(CH3)2CH - CH2 - CH2Br is
The oxidation of toluene to benzaldehyde by chromyl chloride is called
If a convex lens of focal length 80 cm and a concave lens of focal length 50 cm are combined together, what will be their resulting power?