List of practice Questions

At relatively high pressure, van der Waal's equation reduces to

At resonance frequency the impedance in series $LCR$ circuit is

At high concentration of soap in water, soap behaves as_________ .

At low temperature, phenol reacts with $ {Br_2}$ in $ { CS_2} $ to form

At Boyle?? temperature, compressibility factor $Z$ for a real gas is

At cathode, the electrolysis of aqueous $Na_2SO_4$ gives

At constant temperature, the volume of a gas is to be decreased by 4%. The pressure must be increased by

At a telephone enquiry system the number of phone calls regarding relevant enquiry follow Poisson distribution with an average of 5 phone calls during 10 minute time intervals. The probability that there is at the most one phone call during a 10-minute time period is

At any instant, a rolling body may be considered to be in pure rotation about an axis through the point of contact. This axis is translating forward with speed

At any instant the ratio of the amount of radioactive substance is 2 : 1. If their half lives be respectively 12 and 16 hours, then after two days, the ratio of the substances is

At a constant pressure, what should be the percentage increase in the temperature in kelvin for a 10% increase in the volume

At a given instant, there are $25\%$ undecayed radioactive nuclei in a sample. After $10$ seconds the number of undecayed nuclei reduces to $12.5\%$, the mean life of the nuclei is

At $1000^?C$, $Zn_{\left(s\right)}+\frac{1}{2}O_{2\left(g\right)} \to ZnO_{\left(s\right)}$; $\Delta G^{\circ} = -360\,kJ\,mol^{-1}$ $C_{\left(s\right)} + \frac{1}{2}O_{2\left(g\right)} \to CO_{\left(g\right)}$; $\Delta G^{\circ} = -460\,kJ\,mol^{-1}$ The correct statement is

Assuming that straight line work as the plane mirror for a point, find the image of the point $(1, 2)$ in the line $x - 3y + 4 = 0$.

Astragalus and calcaneum are part of

At $10^{\circ}$ C the value of the density of a fixed mass of an ideal gas divided by its pressure is $x$ . At $110^{\circ}$C this ratio is:

Assume that the acceleration due to gravity on the surface of the moon is 0.2 times the acceleration due to gravity on the surface of the earth, If R,. is the maximum range of a projectile on the earth's surface, what is the maximum range on the surface of the moon for the same velocity of projection

Assume the earth's orbit around the sun as circular and the distance between their centers as 'D' mass of the earth is 'M' and its radius is 'R' If earth has an angular velocity $'\omega_0'$ with respect to its center and $'\omega'$ with respect to the center of the sun, the total kinetic energy of the earth is:

Association between mycobiont and phycobiont are found in

Assume a bulb of efficiency $2.5\%$ as a point source. The peak values of electric and magnetic fields produced by the radiation coming from a $100\, W$ bulb at a distance of $3\, m$ is respectively

Assume that air is 21 % oxygen and 79% nitrogen by volume. If the barometer pressure is 740 mm.the partial pressure of oxygen is closest to which one of the following ?

Assume that in a family, each child is equally likely to be a boy or a girl. $A$ family with three children is chosen at random. The probability that the eldest child is a girl given that the family has at least one girl is

$Zn$, $Cd$ and $Hg$ are not regarded as transition elements. The electronic configurations of $Zn$, $Cd$ and $Hg$ are represented by the general formula $(n - 1)d^{10}ns^2$.

: Young's modulus for a perfectly plastic body is zero. : For a perfectly plastic body restoring force is zero

:Zener diode is used to obtain voltage regulation. :When Zener diode is operated in reverse bias, after a certain voltage (breakdown voltage) the current suddenly increases.