List of practice Questions

Venation in monocotyledons is
If position of ovary is below sepals, petals and the flower is called
Purified antibiotic penicillin of Penicillium notatum was discovered by
At menopause there is rise in urinary excretion of
In which of the following binary fission is not seen ?
The edible part of the fruit of apple is
Which one of the following matching pairs is ?
A ray falls on a prism $ABC.(AB = BC)$ and travels as shown in figure. The least value of refractive index of material of the prism, should be:
Symbiotic nitrogen fixation in nonleguminous plant is carried out by
A body takes time $t$ to reach the bottom of an inclined plane of angle $ \theta $ with the horizontal. If the plane is made rough, time taken now is $2t$. The coefficient of friction of the rough surface is:
A body of mass $m$ is moving towards east and another body of equal mass is moving towards north. If after collision both stick together, their speed after collision would be:
A body of mass $1\, kg$ is moving in a vertical circular path of radius $1\, m$. The difference between the kinetic energies at its highest and lowest position is :
Two bodies are thrown up at angles of $40^{\circ}$ and $60^{\circ}$ respectively, with the horizontal. If both bodies attain same vertical height, then ratio of velocities with which these are thrown is
In order to obtain time constant of $10\, s$ in an $R-C$ circuit containing a resistance of $10^3 \Omega$ , the capacity of the condenser should be
A flat mirror revolves at a constant angular velocity making $2\, rev\, s^{-1}.$ With what velocity will a light spot move along a spherical screen with a radius of $10\, m$, if the mirror is at a centre of curvature of the screen ?
A $1\,m$ long steel wire of cross-sectional area $ 1\,mm^{2}$ is extended by $1\, mm$. If $ Y=2\times 10^{11}N/m^{2}$ , then the work done is :
The distance between the sun and the earth be $r$, then the angular momentum of the earth around the sun is proportional to
In acid rain SO accounts for
CFC is reponsible for
Which of the following is a $ C_{4} $ plant?
Which of the following plants is used as biofertilizer?
Which ore contains both iron and copper?
When gynoecium is present in the topmost position of thalamus, the flower is known as
The type of leaf in Daucus carora is
Aerenchyma provides