List of top Questions asked in AMUEEE

Consider the decomposition of $N _{2} O _{5}$ as $N _{2} O _{5} \longrightarrow 2 NO _{2}+\frac{1}{2} O _{2}$ The rate of reaction is given by $\frac{-d\left[ N _{2} O _{5}\right]}{d t}=\frac{1}{2} \frac{d\left[ NO _{2}\right]}{d t}=2 \frac{d\left[ O _{2}\right]}{d t}=k_{1}\left[ N _{2} O _{5}\right]$ Therefore, $\frac{-d\left[ N _{2} O _{5}\right]}{d t}=k_{1}\left[ N _{2} O _{5}\right]$ $\frac{+d\left[ NO _{2}\right]}{d t} =2 k_{1}\left[ N _{2} O _{5}\right]$ $=k_{1}'\left[ N _{2} O _{5}\right] \frac{+d\left[ O _{2}\right]}{d t} =\frac{1}{2} k_{1}\left[ N _{2} O _{5}\right]=k_{1}'' \left[N _{2} O _{5}\right]$ Choose the correct option.

The total number of atoms of all elements present in $ 1 $ mole of ammonium dichromate is

Which of the following has smallest number of molecules ?

During the conversion of $NH _{2} OH \rightarrow N _{2} O$, the equivalent weight of $NH _{2} OH$ (mol. wt. of $NH _{2} OH$ is $M$ ) is

An electron initially at rest falls a distance of $1.5\, cm$ in a uniform electric field of magnitude $2 \times 10^4\, N/C$. The time taken by the electron to fall this distance is

Under the action of a given coulombic force the acceleration of an electron is $2.5 \times 10^{22}\, m \,s^{-2}$. Then the magnitude of the acceleration of a proton under the action of same force is nearly

Let $ * $ be a binary operation on the set $ Q $ of rational numbers defined by $ a*b $ = $ \frac{ab}{4} $ . The identity with respect to this operation is

Let $ f : R $ - { $ \frac {5}{4} $ } $ \rightarrow R $ be a function defined as $ f(x) = \frac{5x}{4x+5} $ . The inverse of $ f $ is the map $ g : Range\,f\,\rightarrow R $ - { $ \frac {5}{4} $ } given by

For the equations $ x + 2y + 3z = 1 $ , $ 2x + y + 3z = 2 $ , $ 5x + 5y + 9z = 4 $

A slab of material of dielectric constant $K$ has the same area as the plates of a parallel plate capacitor but has a thickness $\left(\frac{3}{4}\right) d$, where $d$ is the separation of the plates. The ratio of the capacitance $C$ (in the presence of the dielectric) to the capacitance $C_{0}$ (in the absence of the dielectric) is

For the reaction $A B(g) \rightleftharpoons A(g)+B(g), A B$ is $33 \%$ dissociated at a total pressure of $p$. Therefore, $p$ is related to $K_{p}$ by one of the following options

Which of the following graphs cannot possibly represent one dimensional motion of a particle?

The maximum number of $P-H$ bonds are contained in which of the following molecules?

Total number or voids in $0.5$ mole or compound forming hexagonal closed packed structure are

A man, of mass $60\, kg$, is riding in a lift. The weight of the man, when the lift is accelerating upwards and downwards at $2\, ms ^{-2}$ are respectively (taking $g=10\, ms ^{-2}$ )

Nuclear membrane is absent in

Two masses $ 8 \,kg $ and $ 12 \,kg $ are connected at the two ends of a string that goes over a frictionless pulley. Calculate the acceleration of the masses and the tension in the string. Take $ g = 10 \,m/s^2 $

Three cards are drawn successively without replacement from a pack of $ 52 $ well shuffled cards. The probability that first two cards are queens and the third card is a king, is

The white $ ZnO $ turns yellow on heating because of

The third ventricle of the brain is situated in the

RNA polymerase- $II$ is responsible for transcription of

Micronutrients are needed in amounts equivalent to

Medullary rays are made up of

Which of the following is an appropriate set of reactants for the preparation of $1$ -methoxy-$4$ nitrobenzene?

Which of the following is extracted from sea weeds ?