List of practice Questions

The rate of diffusion of methane is twice that of X. The molecular mass of X is
Amongst the following, the most basic compound is
Aryl halides are less reactive towards nucleophilic substitution reaction as compared to alkyl halide due to
A wave is represented by the equation ; $\, \, \, \, \, y=A \sin (10 \pi x+15 \pi l+ \pi /3) $ where, x is in metre and t is in second. The expression represents
Amongst the elements with following electronic configurations, which one may have the highest ionisation energy?
A solution of potassium ferrocyanide would contain.....ions
A planet is moving in an elliptical orbit around the sun. If T, V, E and L stand respectively for its kinetic energy, gravitational potential energy, total energy and magnitude of angular momentum about the centre of force, which of the following is correct ?
A bullet of mass 10 g leaves a rifle at an initial velocity of 1000 m/s and strikes the earth at the same level with a velocity of 500 m/s. The work done in joule overcoming the resistance of air will be
A bivalent consists of:
A chordate character is
Transfer of Taenia to secondary host occurs as
Jelly fish belongs to class
Fish which can be used in biological control of mosquitoes/Larvicidal fish is
Mango juice is obtained from
An astronomical telescope has an angular magnification of magnitude 5 for far objects. The separation between the objective and the eyepiece is 36 cm and the final image is formed at infinity. The focal length $f_o$ of the objective and the focal length $f_e$ of the eyepiece are
The atomic number of silicon is 14. Its ground state electron configuration is
A conducting square loop of side L and resistance R moves in its plane with a uniform velocity v perpendicular to one of its sides. A magnetic induction B, constant in time and space, pointing perpendicular to and into the plane of the loop exists everywhere.The current induced in the loop is
Death of protoplasm is a pre-requisite for a vital function like
Which of the following hormones can replace vernalisation?
What will be the ratio of the distance moved by a freely falling body from rest in $4^{th}$ and $5^{th}$ seconds of journey ?
Lassaigne?s test is used in qualitative analysis to detect
A current of 2 A, passing through a conductor produces 80 J of heat in 10 seconds. The resistance of the conductor in ohm is
The substrate for photorespiration is
The causal organism for African sleeping sickness is
'Origin of Species' was written by