List of top Questions asked in JEE Advanced- 1984

If M and N are any two events, then the probability that exactly one of them occurs is

The electric charge for electrode deposition of one gram equivalent of a substance is

On hybridisation of one s and one p-orbital we get

Chlorobenzene can be prepared by reacting aniline with

Equal weights of methane and hydrogen are mixed in an empty container at $25^\circ$ C The fraction of the total pressure exerted by hydrogen is

The expression $3\Bigg[sin^4\Bigg(\frac{3\pi}{2}-\alpha\Bigg)+sin^4(3\pi+\alpha)\Bigg]-2\Bigg[sin^6\Bigg(\frac{\pi}{2}+\alpha\Bigg)+sin^6(5\pi-\alpha)\Bigg]$ is equal to

An isotone of $^{76}_{32}Ge$ is

The IUPAC name of the compound having the formula is

A certain weak acid has a dissociation constant of $1.0 \times 10^{ - 4 }$. The equilibrium constant for its reaction with a strong base is

For the gas phase reaction, $ C_2 H_4 + H_2 \rightleftharpoons C_2 H_6 $ $ \hspace15mm$ $ ( \triangle H = - 32.7 \, kcal )$ carried out in a vessel, the equilibrium concentration of $ C_2H_4$ can be increased by

A certain buffer solution contains equal concentration of $ X^-$ and $HX$. The $K_h$ for $X^- \, is \, 10^{ - 19 } $ . The pH of the buffer is

The radiation from a naturally occurring radioactive substance, as seen after deflection by a magnet in one direction, are

White light is used to illuminate the two slits in a Young's double slit experiment. The separation between the slits is b and the screen is at a distance d (>> b) from the slits. At a point on the screen directly in front of one of the slits, certain wavelengths are missing. Some of these missing wavelengths are

Which of the following compounds will give a yellow precipitate with iodine and alkali ?

Which electronic level would allow the hydrogen atom to absorb a photon but not to emit a photon?

$L, C$ and $R$ represent the physical quantities inductance, capacitance and resistance respectively. The combinations which have the dimensions of frequency are

If x+ | y |= 2y , then y as a function of x is

$ \displaystyle \lim_{n \to\infty} \left\{ \frac{1}{1-n^{2}} + \frac{2}{1-n^{2}} + .... + \frac{n}{1-n^{2}}\right\}$ is equal to

Three identical dice are rolled. The probability that the same number will appear on each of them, is

$\Bigg(1+cos\frac{\pi}{8}\Bigg)\Bigg(1+cos\frac{3\pi}{8}\Bigg)\Bigg(1+cos\frac{5\pi}{8}\Bigg)\Bigg(1+cos\frac{7\pi}{8}\Bigg)$ is equal to

If x + | y | = 2y, th e n y as a function of x is

Base catalysed aldol condensation occurs with

Baeyer's reagent is

An industrial method of preparation of methanol is

Zinc-copper couple that can be used as a reducing agent is obtained by