List of top Questions asked in AIEEE- 2006

A reaction was found to be second order with respect to the concentration of carbon monoxide. If the concentration of carbon monoxide is doubled, with everything else kept the same, the rate of reaction will:

The increasing order of the rate of HCN addition to compounds A-D is : (A) $HCHO$ (B) $CH_3COCH_3$ (C) $PhCOCH_3$ (D) $PhCOPh$

The pyrimidine bases present in DNA are :

The current $I$ drawn from the $5$ volt source will be:

The resistance of a bulb filament is $100\, \Omega$ at a temperature of $100^?C$. If its temperature coefficient of resistance be $0.005$ per $^?C$, its resistance will become $200\,\Omega$ at a temperature of:

An electric bulb is rated 220 volt - 100 watt. The power consumed by it when operated on 110 volt will be :

A thermocouple is made from two metals, Antimony and Bismuth. If one junction of the couple is kept hot and the other is kept cold, then, an electric current will:

A coin is placed on a horizontal platform which undergoes vertical simple harmonic motion of angular frequency $\omega$ . The amplitude of oscillation is gradually increased. The coin will leave contact with the platform for the first time:

Density of a 2.05 M solution of acetic acid in water is 1.02 g/mL. The molality of the solution is:

Let W denote the words in the English dictionary. Define the relation $R $ by : $R =\{ (x,y), \in\, W \times \,W$ : the words $x$ and $y$ have at least one letter in commona$\}$ Then R is

Which of the following molecules/ions does not contain unpaired electrons ?

Two insulating plates are both uniformly charged in such a way that the potential difference between them is $V_2 - V_1 = 20\, V.$ (i.e., plate 2 is at a higher potential). The plates are separated by $d = 0.1\, m$ and can be treated as infinitely large. An electron is released from rest on the inner surface of plate 1. What is its speed when it hits plate 2 ? $\left(e=1.6\times10^{-19}C, m_{e}=9.11\times10^{-31}\,kg\right)$

$CH_3Br+ Nu^- \to CH_3 - Nu + Br^-$ The decreasing order of the rate of the above reaction with nucleophiles $(Nu^-)$A to D is : $ [Nu^- = (A)PhO^-, (B)AcO^-, (C)HO^-,(D)CH_3O^-]$

The standard enthalpy of formation $\left(\Delta H^{\circ}_{f}\right)$ at 298 K for methane, $CH_4(g)$, is $- 74.8 \,kJ\, mol^{-1}$. The additional information required to determine the average energy for C�H bond formation would be:

The rms value of the electric field of the light coming from the sun is 720 N/C. The average total energy density of the electromagnetic wave is :

Two rigid boxes containing different ideal gases are placed on a table. Box $A$ contains one mole of nitrogen at temperature $T_0$, while box $B$ contains one mole of helium at temperature $(7/3)\, T_0$. The boxes are then put into thermal contact with each other, and heat flows between them until the gases reach a common final temperature (Ignore the heat capacity of boxes). Then, the final temperature of the gases, $T_f$, in terms of/$T_0$ is :

The potential energy of a 1 kg particle free to move along the $x$-axis is given by $V\left(x\right)=\left(\frac{x^{4}}{4}-\frac{x^{2}}{2}\right)\,J.$ The total mechanical energy of the particle is 2 J. Then , the maximum speed (in m/s) is :

The increasing order of stability of the following free radicals is:

The correct order of increasing acid strength of the compounds :

The circuit has two oppositely connected ideal diodes in parallel. What is the current flowing in the circuit ?

Rate of a reaction can be expressed by Arrhenius equation as : $k = Ae^{-E/RT}$ In this equation, E represents :

Needles $N_{1}, N_2$ and $N_3$ are made of a ferromagnetic, a paramagnetic and a diamagnetic substance respectively. A magnet when brought close to them will:

LetC be the circle with centre (0, 0)and radius 3 units. The equation of the locus of the mid points of the chords of the circle C that subtend an angle of $\frac{2 \pi}{3}$ at its centre, is :

In $Fe(CO)_5$ > the Fe?? bond possesses :

In an AC generator, a coil with $N$ turns, all of the same area $A$ and total resistance $R$, rotates with frequency $\omega$ in a magnetic field $B$. The maximum value of emf generated in the coil is: