List of practice Questions

To which of the following flower synandrous condition is found?
If $I =\int\frac{x^{5}}{\sqrt{1+x^{3}}}dx$ , then I is equal to
The solution of the differential equation $\frac{dy}{dx} = \frac{xy + y}{xy + x}$ is
In $R-C$ circuit $\omega=100\, rad \,s ^{-1},\, R =100\, \Omega,\, C =20\, \mu\, F$. What is impedance?
The magnetic moment of atomic neon is

Given below are two statements, one is labelled as Assertion A and the other is labelled as Reason R
Assertion \(He_2\) does not exist. 

Reason Bond order of \(He_2\) is zero.

In the light of the above statements, choose the correct answer from the options given below

Filariasis is caused by

Element with atomic number 38 belongs to

Two balls of same mass each m are moving with same velocities v on a smooth surface as shown in figure. If all collisions between the masses and with the wall are perfectly elastic, the possible number of collisions between the bodies and wall together is
The mass of helium atom of mass number $4$ is $4.0026$ amu, while that of the neutron and proton are $1.0087$ and $1.0078$ respectively on the same scale. Hence, the nuclear binding energy per nucleon in the helium atom is nearly
Water falls from a height of 60 m at the rate of 15 kg/s to operate a turbine. The losses due to frictional forces are 10% of energy. How much power is generated by the turbine ? (g = 10 m/s$^2$)
A thin wire of mass $ M $ and length $ L $ is bent to form a circular ring. The moment of inertia of this ring about its axis is
Oxidation product of 1,2-cyclopentanediol with $HIO _{4}$ gives
Two closed organ pipes of length $100 \,cm$ and $101\, cm$ produces $16$ beats in $20\, sec .$ When each pipe is sounded in its fundamental mode calculate the velocity of sound.
The wavelength of red light from $He-Ne$ laser is $ 633\, nm $ in air but $ 474 $ nm in the aqueous humor inside the eye ball. Then the speed of red light through the aqueous humor is
The velocity of electromagnetic radiation in a medium of permittivity ? and permeability � is given by
The unit of universal gas constant is
The totipotent cell of sponge is
The temperature of the system decreases in the process of
The ten's digit in $1! + 4!+ 7! + 10!+12! + 13! + 15! +16! + 17!$ is divisible by
The synthesis of complex molecules from simple molecules was proved by
The statement which is not correct, is
The stored food in animals is called
The forbidden gap in the energy bands of silicon is
The extra structure that provides nutrition to the embryo is