List of practice Questions

What is the fuel of atomic pile ?
The refractive indices of glass and water with respect to air are $\frac{3}{2}$ and $\frac{4}{3}$ respectively. Then the refractive index of glass with respect to water is
Given $ tan\text{ }A $ and $ tan\text{ B} $ are the roots of $ {{x}^{2}}-ax+b=0 $ . The value of $ {{\sin }^{2}}(A+B) $ is
A ball is released from the top of a tower. The ratio of work done by force of gravity in first, second and third second of the motion of the ball is
The probability of choosing a number divisible by $6$ or $8$ from among $1$ to $90$ is
A particular force $(F)$ applied on a wire increases its length by $2 \times 10^{-3} m$. To increase the wire's length by $4 \times 10^{-3} m$ the applied force will be
On the set $N$ of all natural numbers define the relation $R$ by $a R b$ if and only if the $G.C.D.$ of $a$ and $b$ is $2$, then $R$ is
The radius of the first Bohr orbit of hydrogen atom is $ 0.529\overset{\text{o}}{\mathop{\text{A}}}\, $ . The radius of the third orbit of $ {{He}^{+}} $ will be
The frequency of vibrating air column in closed organ pipe is n. If its length be doubled and radius halved, its frequency will be nearly
The oxidation state of chromium in chromium trioxide is
The protective action of different lyophilic colloids is expressed in terms of
The reaction intermediate produced, by homolytic cleavage of a bond is called
Two free parallel wires carrying currents in the opposite directions
Two liquid drops have diameters of $1\, cm$ and $1.5\, cm$ The ratio of excess of pressures inside them is
The escape velocity of a body from the earth is $v_{e}$ . If the radius of earth contracts to $ \frac{1}{4}th $ of its value, keeping the mass of the earth constant, the escape velocity will be
The catalyst used in the manufacture of $H_{2}SO_{4}$ by contact process is
The osmotic pressure is expressed in the units of
Work done in converting one gram of ice at $ -10^{\circ}C $ into steam at $100^{\circ}C $ is
Nucleotide consists of
The hybridisation of the ipso-carbon in chlorobenzene is
A body of mass $10\, kg$ is acted upon by two forces each of magnitude $10\, N$ making an angle of $60^{\circ}$ with each other. Find the net acceleration of the body.
The least angle of deviation for a glass prism is equal to its refracting angle. The refractive index of glass is $ 1.5 $ . Then the angle of prism is
When three dice are thrown the probability of getting a $4$ or $5$ so on each of the dice simultaneously is
Monel metal is an alloy of
The specific conductance $ (\kappa ) $ of an electrolyte of $0.1\, N$ concentration is related to equivalent $ (\Lambda ) $ by the following formula