AIEEE 2009 PYQ Mock Test

The major product obtained on interaction of phenol with sodium hydroxide and carbon dioxide is:

Which of the following statements is incorrect regarding physisorption?

Which of the following on heating with aqueous $\text{KOH}$, produces acetaldehyde?

In an atom, an electron is moving with a speed of $600\text{m/s}$ with an accuracy of $0.005\%$. Certainty with which the position of the electron can be located is ($h=6.6\times 10^{-34}{\text{kg m}}^2{\text{s}}^{-1}$, mass of electron $m_e=9.1\times 10^{-31}\text{kg}$):

In a fuel cell methanol is used as fuel and oxygen gas is used as an oxidizer. The reaction is ${\text{CH}}_3\text{OH}(l)+\frac{3}{2}{\text{O}}_2(g)\to {\text{CO}}_2(g)+2{\text{H}}_2\text{O}(l)$. At $298\text{K}$ standard Gibb’s energies of formation for ${\text{CH}}_3\text{OH}(l)$, ${\text{H}}_2\text{O}(l)$ and ${\text{CO}}_2(g)$ are $-166.2$, $-237.2$ and $-394.4{\text{kJ mol}}^{-1}$ respectively. If standard enthalpy of combustion of methanol is $-726{\text{kJ mol}}^{-1}$, efficiency of the fuel cell will be: