A compound is formed by elements A, B and O. Atoms of oxygen form ccp lattice. Atoms of A (cation) occupy \(\frac{1}{8}^{\text {th }}\) of tetrahedral voids and atoms of B (cation) occupy half of octahedral voids. What is the molecular formula of the compound?

Identify 'acetaldoxime'

According to the Lewis formula of ${\mathrm{O}}_3$, the correct option is

Which one of the following does not exhibit geometrical isomerism?

\[ \begin{aligned} & \text { Given } \mathrm{H}_2(\mathrm{~g})+\frac{1}{2} \mathrm{O}_2(\mathrm{~g}) \rightarrow \mathrm{H}_2 \mathrm{O}(l) ; \Delta \mathrm{H}=-285 \mathrm{~kJ} \ & \mathrm{~N}_2 \mathrm{O}_5(\mathrm{~g})+\mathrm{H}_2 \mathrm{O}(l) \rightarrow 2 \mathrm{HNO}_3(l) ; \Delta \mathrm{H}=-76.6 \mathrm{~kJ} \ & \mathrm{~N}_2(\mathrm{~g})+3 \mathrm{O}_2(\mathrm{~g})+\mathrm{H}_2(\mathrm{~g}) \rightarrow 2 \mathrm{HNO}_3(l) ; \Delta \mathrm{H}=-348.2 \mathrm{~kJ} \ & \text { Calculate the } \Delta \mathrm{H} \text { of } 2 \mathrm{~N}_2(\mathrm{~g})+5 \mathrm{O}_2(\mathrm{~g}) \rightarrow 2 \mathrm{~N}_2 \mathrm{O}_5(\mathrm{~g}) \end{aligned} \] Calculate the \(\Delta \mathrm{H}\) of \(2 \mathrm{~N}_2(\mathrm{~g})+5 \mathrm{O}_2(\mathrm{~g}) \rightarrow 2 \mathrm{~N}_2 \mathrm{O}_5(\mathrm{~g})\).

The correct order of the bond angles of the given compounds is

The successive ionisation energy values for an element ' \(X\) ' are given below : (i) lst ionisation energy \(=410 \mathrm{~kJ} \mathrm{~mol}^{-1}\) (ii) \(2 \mathrm{nd}\) ionisation energy \(=820 \mathrm{~kJ} \mathrm{~mol}^{-1}\) iii) \(3 \mathrm{rd}\) ionisation energy \(=1100 \mathrm{~kJ} \mathrm{~mol}^{-1}\) (iv) 4 th ionisation energy \(=1500 \mathrm{~kJ} \mathrm{~mol}^{-1}\) (v) 5 th ionisation energy \(=3200 \mathrm{~kJ} \mathrm{~mol}^{-1}\)

The length of the segment of the tangent line to the curve \(x=a \cos ^3 t, y=\alpha \sin ^3 t\), at any point on the curve cut off by the coordinate axes is

If \(a, b\) and \(n\) are natural numbers, then \(a^{2 n-1}+b^{2 n-1}\) is divisible by

$P$ is a point on the conic $a^2{x}^2+b^2{y}^2=a^2\left(a^2+b^2-y^2\right)$ and $S$ is a focus of that conic. $M$ is the foot of the perpendicular from $P$ on to a directrix of that conic nearer to $S$. If $PM=KSP$, then $K=$

If the rate of change of electric field across the plates of a parallel plate capacitor is \(E\) and the displacement current is I, then the area of one plate of the capacitor is ( \(\varepsilon_{\mathrm{o}}\) is permittivity of free space)

Which of the following graphs represent a first order reaction \((a=\) initial concentration of reactant, \(x=\) concentration of reactant consumed, \(t=\) time)?

The natural frequency of an LC circuit is 120 kHz . When the capacitor in the circuit is totally filled with a dielectric material, the natural frequency of the circuit decreases by 20 kHz . Dielectric constant of the material is