List of practice Questions

The order ionization energies of different orbital is
The order of magnitude of the diameter of the earth is (Diameter of the earth is $1.28 \times 10^7\,m$)
The orbital speed of geostationary satellite is
The order and degree of $\left(1+ \frac{dy}{dx}\right)^{2} = 5\left(\frac{dy}{dx}\right)^{2} $ are
The order HF < HCl < HBr < Hl corresponds to which of the following properties ?
The opening of right atrium into right ventricle of human heart is guarded by
The optical density of turpentine is higher than that of water while its mass density is lower. Figure shows a layer of turpentine floating over water in a container. For which one of the four rays incident on turpentine in figure, the path shown is correct?
The orbital configuration oi $_{24}Cr$ is $3d^5 4s^1$. The number of unpaired electrons in $Cr^{3+} (g)$ is
The oil used in the floatation method for the purification of ores is
The one which does not show variable valency is
The one which is not the unit of length is
The only oxidation state of alkali metals in their compounds is
The observation which occur most frequently is known as :
The octahedral voids in a face-centred cubic (fee or ccp) structure are located at
The numerical value of coefficient of linear expansion is independent of units of a) length b) temperature c) area d) mass
The numerical value of universal gas constant (R)depends upon
The nutritive cells found in seminiferous tubules are
The number of ways of distributing $50$ identical things among $8$ persons in such a way that three of them get $8$ things each, two of them get $7$ things each, and remaining $3$ get $4$ things each, is equal to
The number of ways of distributing 8 identical balls in 3 distinct boxes so that none of the boxes is empty is
The number of ways in which $8$ different flowers can be strung to form a garland so that $4$ particular flowers are never separated is
The number of ways in which a mixed doubles game in tennis can be arranged from 5 married couples, if no husband and wife play in the same game, is
The number of ways in which the six faces of a cube be painted with six different colours is
The number of vectors of unit length perpendicular to the vectors $\vec{a} = 2\hat{i} +\hat{j } +2\hat{k}$ and $\vec{b} = \hat{j} + \hat{k}$ is
The number of ways in which 4 men and 3 ladies sit at a round table so that no two ladies sit together is
The number of unpaired electrons in gaseous species of $Mn^{3+}$, $Cr^{3+}$ and $V^{3+}$ respectively are_____and the most stable species is_____.