List of practice Questions

The sequence of acidic character is
The segments of earthworms are
The second, third and fourth terms in the binomial expansion $(x+a)^n$ are $240$, $720$ and $1080$, respectively. Find $x$, $a$ and $n$ respectively.
The satellite of mass m revolving in a circular orbit of radius r around the earth has kinetic energy E. Then its angular momentum will be
The second most electronegative element of the periodic table belongs to which family and which period respectively ?
The Rubin number which was proposed by Ostwald as an alternative to the Gold number in order to measure the protective efficiency of a lyophillic colloid may be defined as the
The S.D. of the first n natural numbers is
The root mean square velocity, $v_{rms}$ , the average velocity $v_{av}$ and the most probable velocity,$v_{mp}$ of the molecules of the gas are in the order:
The RNAi stands for
The role of inductance is equivalent to :
The root mean square speed of gas molecules
The relation between $v_{rms}$ velocity, and the most probable velocity, $v_{mp}$ , of a gas is:
The relation between a, b, a' and b' such that the two lines ax + by = c and a'x + b'y = c' are perpendicular is
The relation between p and T during the adiabatic process with a monoatomic gas is $pT^n$= constant. What is the value of n = ?
The relation between the slope of isothermal curve and slope of adiabatic curve
The refractive index of glass with respect to air is 1.6. The refractive index of air w.r.t glass is:
The refractive index of glass is $1.5$ for light waves of $\lambda = 6000 \,?$ in vacuum. Its wavelength in glass is
The reaction $Cr_2O_3 + 2Al \to Al_2O_3 + 2Cr (\Delta G^? = - 421\, kj)$ is thermodynamically feasible due to -ve value of $\Delta G$. Why does this reaction not take place at room temperature?
The reaction of Lucas reagent is fastest with
The reaction $ {2SO2 +O2 <=> 2SO3 +}$ Heat, will be favoured by
The reaction between alcohol and carboxylic acidsis called
The reaction $CH_3CH_2Br + OH^- \rightarrow CH_3CH_2OH + Br^-$ is an example of :
The ratio of the speed of the electron in the ground state of hydrogen atom to the speed of light in vacuum is
The ratio of specific charge of the electron and nucleus of hydrogen atom is
The ratio of one micron to one nanometre is