List of practice Questions

Vasa efferentia are muscular tubes, each of which connects

The ratio of the energy required to raise a satellite upto a height $h$ above the earth of radius $R$ to that the kinetic energy of the satellite into that orbit is

The power of biconvex lens is 10 dioptre and the radius of curvature of each surface is 10 cm. Then the refractive index of the material of the lens is

The pH value of 0.01 N NaOH solution is

The number of atoms in $100\,g$ of an $fcc$ crystal with density, $d = {10\, g/cm^3}$ and cell edge equal to $100\,pm$, is equal to

The nature of bonding between adjacent atoms in graphite is

The increasing order of stability of the following radicals is

The correct order of acidic strength of (i) Alcohol (ii) Acetic acid (iii) 2,4,6-Trinitrophenol (iv) Phenol is

The dimensional formula for electric flux is

The coordination number of ${Pt}$ and ${Fe}$ in ${[PtCl_6] }$ and ${[Fe(NH3)4] }$ repectively are

Sodium in sodium vapour lamp produces

Kohlrausch's law states that at

In cockroach, the ootheca is formed by the secretion of

In an isothermal process, there is

If a planet has twice the mass of earth and three times the radius $(R)$ of earth, then the escape velocity of the planet is ($\upsilon_e$ = escape velocity of earth)

If a fresh water protozoan is placed in marine water, then what change will be observed in its contractile vacuole?

G-6-P-D deficiency inheritance is an example of ______ inheritance.

For the redox reaction, ${ MnO_4^- + C2O4^{2-} + H+ ? Mn^{2+} + CO2 + H2O}$ .The correct stoichiometric coefficients of ${ MnO_4^-, C2O_4^{2-}}$ and ${H^+}$ are

First clinical gene therapy was performed to prevent development of

Deficiency of thyroxine in an adult causes a disease characterised by low BMR, low body temperature, scaly skin etc. The disease is

At $CMC$, the surfactant molecules undergo

All of the following are found in seminiferous tubules except

Aestivation of petals in the flower of cotton is correctly shown in

A stone tied at the end of a string 80 cm long is whirled in a horizontal circle with a constant speed. If the stone makes 25 revolutions in 14 s, what is the magnitude of acceleration of the stone ?

A tank full of water has a small hole at its bottom. If one-fourth of the tank is emptied in $t_1$ seconds and the remaining three fourths of the tank is emptied is $t_2$ seconds, then ratio $(t_1/t_2)$ is