List of practice Questions

The number of radial nodes of $3s$ and $2p$ orbitals are respectively

The number of atoms per unit cell of $bcc$ structure is

Stronger is oxidising agent, more is

Specific conductance of o.1 \,M \,HA is $3 \cdot 75 \times 10^{-4} \,ohm ^{-1} \, cm ^{-1}$. Find the dissociation constant $K _{ a }$ of $HA$, if $\lambda_{\infty}( HA )=250 \, ohm ^{-1} \, cm ^{2} \,mol ^{-1}:$

In the formula $X=3 Y Z^{2}, X$ and $Z$ have dimensions of capacitance and magnetic induction respectively. The dimensions of $Y$ in $MKSA$ system are :

In Fraunhofer diffraction pattern, slit width is $0.2\, mm$ and screen is at $2 \,m$ away from the lens. If wavelength of light used is $5000 \, \mathring A $ then the distance between the first minimum on either side of the central maximum is ($\theta$ is small and measured in radian)

If the eccentricity of the hyperbola $x^{2}-y^{2} cos ec^{2} \alpha=25 is \sqrt{5}$ times the eccentricity of the ellipse $x^{2} cos ec^{2} \alpha+y^{2}=5, then \alpha$ is equal to :

If $\int \frac{\cos x-1}{\sin x+1} e^{x} d x$ is equal to:

The number of unpaired electrons in $\left[NiCl_{4}\right]^{2-}, Ni\left(CO\right)_{4}$ and $\left[Cu\left(NH_{3}\right)_{4}\right]^{2+}$ respectively are :

$PbCl_2$ is insoluble in cold water. Addition of $HCl$ increases its solubility due

Of the following compounds, which one is the strongest Bronsted acid in aqueous solution?

How many different nine digit numbers can be formed from the number $223355888$ by rearranging its digits so that the odd digits occupy even positions?

The shape of $XeF_{5}^{-}$ will be

Formation of urea takes place in the _______.

Electrometallurgical process is used to extract

Which of the following can form buffer solution?

The energy of an electron in second Bohr orbit of hydrogen atom is :

Which of the following order is wrong?

Which of the following is not involved in the formation of photochemical smog?

Which of the following is not present in Portland cement?

Raoult?s law becomes a special case of Henry?s law when

$E^{\circ}$ for the cell, $Z n\left|Z n^{2+}(a q) \| C u^{2+}(a q)\right| C u$ is $1.10 V$ at $25^{\circ} C$. The equilibrium constant for the reaction, $Z n(s)+C u^{2+}(a q) \rightleftharpoons C u(s)+Z n^{2+}(a q)$ is of the order

Which of the following represents Gay Lussac's law? I. $\frac{P}{T}=$ constant II. $P _{1} T _{2}= P _{2} T _{1}$ III. $P _{1} V _{1}= P _{2} V _{2}$ Choose the correct option.

Which of the following shows nitrogen with its increasing order of oxidation number?

Atrial systole lasts for _______ in Cardiac Cycle