List of practice Questions

The longest wavelength doublet absorption transition is observed at $589$ and $589.6\,nm$. Energy difference between two excited states is
The lower end of a capillary tube of radius r is placed vertically in water then with the rise of water in the capillary heat evolved is
The lower surface of leaf will have more number of stomata in a
The logically equivalent preposition of $p \Leftrightarrow q$ is
The locus of the point of intersection of lines $x \cos \, \alpha + y \sin \alpha = a$ and $x \sin \alpha - y \cos \alpha = b$ ($\alpha$ is a variable)
The locus of the vertices of the family of parabola $ 6y = 2a^3x^2 + 3a^2x - 12a $ is
The locus of the equation $xyz = 0$ is
The locus of the foot of the perpendicular from the centre of the ellipse $\frac{x^2}{a^2}+\frac{y^2}{b^2} = 1$ on any tangent is given by $(x^2+y^2) = lx^2+my^2$,where
The lines x + 2y - 5 = 0, 2x - 3y + 4 = 0, 6x + 4y - 13 = 0
The liquid drop model of nucleus was proposed by
The linear strain in x ,y and z directions are $e_x,e_y$ and $e_z$. respectively. Then the volumetric strain is given by
The lines $a_1x + b_1y + c_1 = 0$, $a_2x + b_2y + c_2 - 0$ and $a_3x = 0$ are concurrent, if $b_1c_2 - b_2c_1$ is equal to
The line $ y = 2x + c$ is. a tangent to the parabola $ y^2 = 16x$, if c equals
The linear momentum of a $3\, MeV$ photon is
The limiting radius ratio for tetrahedral shape is:
The line $\frac {x} {a} + \frac {y} {b} =1$ touches the curve $y = be^{-x/a}$ at the point
The life span of thrombocytes is
The lightest gas which is non-inflammable is
The level of water in a tank is 5m high. A hole of area $1\,cm^2$ is made at the bottom of the tank. The rate of leakage of water from the hole in $m^3/s$ is $(g=10\,ms^{-2})$
The lengths of the tangent drawn from any point on the circle $15x^2 + 15x^2 - 48x +64y = 0$ to the two circles $5x^2 + 5y^2 -24x + 32y +75 = 0$ and $5x^2 + 5y^2 - 48x + 64y +300 = 0$ are in the ratio of
The letters of the word "LABOUR" are permuted in all possible ways and the words thus formed are arranged as in a dictionary the rank of the word "LABOUR" is
The length of the simple pendulum which ticks seconds is
The length of the subtangent to the curve $x^2 + xy + y^2 = 7$ at $ (1, - 3)$ is
The length of the common chord of the two circles $x^2 + y^2 - 4y = 0$ and $x^2 + y^2 - 8x - 4y + 11 = 0$
The length of the perpendicular drawn from the point (3, -1, 11) to the line $\frac{x}{2} = \frac{y-2}{3} = \frac{z-3}{4} $ is :