JEE (Advanced) 2009 Paper-1
For the following questions answer them individually
The term that correct for the attractive forces present in a real gas in the van der Waals equation is
Given that the abundances of isotopes $$^{54}Fe,^{56}Fe$$ and $$^{57}Fe$$ are 5%,90% and 5% respectively, the atomic mass of Fe is -
Among cellulose, poly(vinyl chloride), nylon and natural rubber, the polymer in which the intermolecular force of attraction is weakest is -
The Henry's law constant for the solubility of $$N_{2}$$ gas in water at 298 K is $$1.0\times10^{5}$$ atm. The mole fraction of $$N_{2}$$ in air is 0.8. The number of moles of $$N_{2}$$ from air dissolved in 10 moles of water at 298 K and 5 atm pressure is -
Among the electrolytes $$Na_{2}SO_{4},\ CaCl_{2},\ Al_{2}(SO_{4})_{3}$$ and $$NH_{4}Cl$$, the most effective coagulating agent for $$Sb_{2}S_{3}sol$$ is
