1
IIT-JEE 2009 Paper 1 Offline
MCQ (Single Correct Answer)
+1
-0.25
Given that the abundances of isotopes 54Fe, 56Fe and 57Fe are 5%, 90% and 5%, respectively, the atomic mass of Fe is :
A
55.85
B
55.95
C
55.75
D
56.05
2
IIT-JEE 2009 Paper 1 Offline
MCQ (Single Correct Answer)
+3
-1

The term that corrects for the attractive forces present in a real gas in the van der Waals equation is

A
$$nb$$
B
$${{a{n^2}} \over {{V^2}}}$$
C
$$ - {{a{n^2}} \over {{V^2}}}$$
D
$$ - nb$$
3
IIT-JEE 2009 Paper 1 Offline
MCQ (Single Correct Answer)
+3
-1

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

A
Na$$_2$$SO$$_4$$
B
CaCl$$_2$$
C
Al$$_2$$(SO$$_4$$)$$_3$$
D
NH$$_4$$Cl
4
IIT-JEE 2009 Paper 1 Offline
MCQ (Single Correct Answer)
+3
-1

The Henry's law constant for the solubility of N$$_2$$ gas in water at 298 K is 1.0 $$\times$$ 10$$^5$$ 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

A
4.0 $$\times$$ 10$$^{-4}$$
B
4.0 $$\times$$ 10$$^{-5}$$
C
5.0 $$\times$$ 10$$^{-4}$$
D
4.0 $$\times$$ 10$$^{-6}$$
JEE Advanced Papers
EXAM MAP