List of practice Questions

The hybridisation present in $ IF_{3}$ is:

Nessler's reagent is:

The acid, not suitable for the preparation of hydrogen by the action of metals, is:

The geometry of $H_2S$ and its dipole moment are

Which of the following gas has highest heat of combustion?

The ground state energy of hydrogen atom is $-13.6\, eV$. What is the potential energy of the electron in this state?

The force required to just move a body up an inclined plane is double the force required to just prevent it from sliding down. If $\theta$ is the angle of friction and $\theta$ is the angle which the plane makes with the horizontal, then :

If 13.6eV energy is required to ionize the hydrogen atom, then the energy required to remove an electron from $ n=2 $ is:

The elevation in boiling point, when 13.44 g of freshly prepared CuCI$_2$ are added to one kilogram of water, is . [Some useful data, K$_b = 0.52 K kg mol^{-1}$, molecular weight of CuCl$_2$ =134.4 g]

The disperse phase in colloidal iron (III) hydroxide and colloidal gold is positively and negatively charged, respectively. Which of the following statements is not correct ?

The diamagnetic species is

The cyanobacteria are also referred to as

The correct order of the thermal stability of hydrogen halides (H - X)is :

The co-ordination number and oxidation number of $X$ in the following compound $[X(SO_4)(NH_3)_5]Cl$ will be:

The chief impurity present in red bauxite is:

The change in the value of '$g$' at a height '$h$' above the surface of the earth is the same as at a depth '$d$' below the surface of earth. When both '$d$' and '$h$' are much smaller than the radius of earth, then which one of the following is correct ?

The apparent depth of water in cylindrical water tank of diameter $2R\, cm$ is reducing at the rate of $x\, cm/$minute when water is being drained out at a constant rate. The amount of water drained in c.c. per minute is ($n_1$ = refractive index of air, $n_2$ = refractive index of water).

Degree of dissociation of $NH _{4} OH$ in water is $1.8 \times 10^{-5}$, then hydrolysis constant of $NH _{4} Cl$ is :

The charge on an electron was discovered by:

What amount of water is added in $40\, ml$ of $NaOH (0.1\, N )$ which is neutralized by $50\, ml$ of $HCl (0.2\, N )$ ?

Slope between $ PV $ and $ P $ at constant temperature is:

For $A \longrightarrow B, \Delta H=4\, Cal\, mol ^{-1}\,\Delta S=10\, Cal\, mol ^{-1}\, K ^{-1}$ reaction is spontaneous when temperature can be :

Unit of rate constant of zero order reaction is:

Mole fraction of a solute in benzene is $0.2$ then find molality of solute:

Which of the following is more acidic in nature?