List of top Questions asked in AMUEEE- 2012

A wheel turning with angular speed of 30 rev/s is brought to rest with a constant acceleration. It turns 60 rev before it stops, the time that elapses before it stop, is

The rotor�s velocity of a helicopter engine changes from $ 330 \,rev/min $ to $ 110 \,rev/min $ in 2 minutes. How long does the rotor blades take to stop?

Ammonia undergoes self-dissociation according to the reaction, $2 NH _{3}(l) \rightleftharpoons NH _{4}^{+}{ }_{(a m)}^{+}+ NH _{2(a m)}^{-}$ where am, stands for ammoniated. When $1$ mole of $NH _{4} Cl$ is dissolved in $1\, kg$ of liquid ammonia, the b. p. at $760$ tour is observed at $-32^{\circ} C$ (Normal b.p. of $N H_{3(l)}$ is $-33.4^{\circ} C$ ). What conclusions are reached about the nature of the solution?

Consider two half-cells based on the reaction $A g^{+}(a q)+e^{-} \rightarrow A g(s)$ The left half-cell contains $A g^{+}$ions at unit concentration, and the right half-cell initially had the same concentration of $A g^{+}$ions, but just enough $NaCl_{(a q)}$ had been added to completely precipitate the $A g_{(a q)}^{+}$as $AgCl$. If the emf of the cell is $0.29\, V$, the $\log _{10} K_{s p}$ would have been

The total number of terms in the expansion of $ ( 1 + x ) ^{2n} - ( 1 - x ) ^{2n} $ after simplification is

Which one among the following alcohols will give iodoform on treatment with iodine and sodium hydroxide?

The density of a $ 3M $ sodium thiosulphate $ (Na_2S_2O_3) $ solution is $ 1.25\, g/mL $ . Calculate the percent by weight of sodium thiosulphate

The $ IUPAC $ name of $ CH_3CH(OH)CH_2CH(CH_3)CHO $ is

If $f(x)$ = $ \begin{vmatrix}x+1&x&1\\ x\left(x+1\right)&x\left(x-1\right)&2x\\ x\left(x+1\right)\left(x-1\right)&x\left(x-1\right)\left(x-2\right)&3x\left(x-1\right)\end{vmatrix} $ , then $ f(1000) $ is equal to

The equation of the plane through the points $ (2, 2,1) $ and $ (9, 3, 6) $ and perpendicular to the plane $ 2x + 6y + 6 z - 1 = 0 $ is

Compounds, $\left.\left[ PtCl _{2} NH _{3}\right)_{4}\right] Br _{2}$ and $\left[ PtBr _{2}\left( NH _{3}\right)_{4}\right] Cl _{2}$, shows the following type of isomerism

A battery of emf $ 8V $ with internal resistance $ 0.5 \, \Omega$ is being charged by a $ 120 \,V\, d.c. $ supply using a series resistance of $ 15.5 \Omega $ . The terminal voltage of the battery is

Henry's law constants for aqueous solution of $CO , O _{2}, CO _{2}$ and $C _{2} H _{2}$ gases are respectively at $25^{\circ} C$ as $58 \times 10^{3}, 43 \times 10^{3}, 1.61 \times 10^{3}$ and $1.34 \times 10^{3}$. The solubility of these gases decreases in the order

For the second order reaction, $ A + B \to $ Products When $ a $ moles of $ A $ reacts with $ b $ moles of $ B $ , the rate equation is given by $ k_{2} t = \frac{1}{\left(a-b\right)} \,ln \,\frac{b\left(a-x\right)}{a\left(b-x\right)} $ When $ a > > b $ ,the rate expression becomes that of

If the rate constant of a reaction has the value $k=163 \times 10^{-4}( mol )^{-\frac{1}{2}} s ^{-1}$, the order of the reaction is

For a diprotic acid, which of the following is true for first and second ionization constants? $ (K_{a_1} $ and $ K_{a_2} $ ).

The, following molecule has a linear shape

To speed up the malting process in brewing industry the growth hormone used is

The total number of biodiversity hotspots in the world are

Phloem sap is mainly made of

Which of the following is a chiral molecule?

Which of the following is not a $ \pi $ - bonded complex?

Which one of the following is a breed of cattle?

Which one of the following is an example of Hell-Volhard-Zelinsky reaction?

Yeast cell can progress through the cell cycle in about