List of practice Questions

Which of the following has the highest bond order ?
Maximum number of hydrogen bonding is in :
The enthalpy and entropy change for the reaction : $ {Br2(\ell) + Cl2(g) -> 2BrCl(g)}$ are $30 \,kJmol^{-1}$ and $105\,JK^{-1} mol^{-1}$ respectively. The temperature at which the reaction will be in equilibrium is :
Two circular coils 1 and 2 are made from the same wire but the radius of the $1^{st} $ coil is twice that of the $ 2^{nd} $coil. What potential difference in volts should be applied across them so that the magnetic field at their centres is the same-
Which of the following species has a linear shape?
In the group $G = \{1,5,7,11\}$ under multiplication modulo $12$, the solution of $ 7^{-1} \; \otimes_{12} (x \otimes_{12} 11) = 5$ is $x$ =
The value of $\displaystyle\lim_{x \to 0} \frac {5^x-5^{-x}}{2x}=$ is :
A rectangular block is 5 cm $\times$ 5 cm $\times$ 10 cm in size. The block is floating in water with 5 cm side vertical. If it floats with 10 cm side vertical, what change will occure in the level of water?
An ice block contains a glass ball. When the ice melts within the water containing vessel, the level of water:
Air is blown through a hole on a closed pipe containing liquid. Then, the pressure will
A body of mass 3 kg is under a constant force which causes a displacement s in meters in it, given by the relation s = (\(\frac{1}{3}\)) t2, where t is in s. Work done by the force in 2 s is :
Given, the mass of electron is $9.11 \times 10^{-31}\, kg$, Planck's constant is $6.626 \times 10^{-34}\, Js$, the uncertainty involved in the measurement of velocity within a distance of $0.1 \mathring{A}$ is
If $?=10^{-10}m$ changes to $?'=0.5 \times 10^{-10}m, $ find energy difference $(?E) $ given to the particle
A block of wood resting on an inclined plane of angle $ 30{}^\circ $ , just starts moving down. If the coefficients of friction is 0. 2, its velocity (in ms-1) after 5 s is: $ (g=10m{{s}^{-2}}) $
A body of mass 2 kg is projected from the ground with a velocity $ 20m{{s}^{-1}} $ at an angle $ 30{}^\circ $ with the vertical. If $ {{t}_{1}} $ is the time in seconds at which the body is projected and $ {{t}_{2}} $ is the time in seconds at which it reaches the ground, the change in momentum in kg ms-1 during the time $ ({{t}_{2}}{{t}_{1}}) $ is:
The formula for exponential population growth is -

Acrolein test is positive for:

At $pH = 4$ glycine exists as
Which of the following is not an ore of magnesium?
$\Delta G ^ \circ \,Vs\, T$ plot in the Ellingham's diagram slopes downwards for the reaction
Which of the following reaction taking place in the Blast furnace is endothermic ?
In the conversion of $Br_2$ to $BrO^-_3 $, the oxidation number of $Br$ changes from
Which of the following is not an ore of magnesium?
Which of the following can participate in linkage isomerism ?
The formation of $ O^{+}_2 [P_t F_6 ]^-$ is the basis for the formation of Xenon fluorides. This is because