1
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
What volume of hydrogen gas at 273 K and 1 atm pressure will be consumed in obtaining 21.6 g of elemental boron (atomic mass = 10.8) from the reduction of boron trichloride by hydrogen?
A
67.2 L
B
44.8 L
C
22.4 L
D
89.6 L
2
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
25 ml of a solution of barium hydroxide on titration with a 0.1 molar solution of hydrochloric acid gave a litre value of 35 ml. The molarity of barium hydroxide solution was
A
0.14
B
0.28
C
0.35
D
0.07
3
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
Which one of the following groupings represents a collection of isoelectronic species? (At. nos. : Cs : 55, Br : 35)
A
N3-, F-, Na+
B
Be, Al3+, Cl-
C
Ca2+, Cs+, Br
D
Na+, Ca2+, Mg2+
4
AIEEE 2003
MCQ (Single Correct Answer)
+4
-1
The de Broglie wavelength of a tennis ball of mass 60 g moving with a velocity of 10 meters per second is approximately
A
10-31 meters
B
10-16 meters
C
10-25 meters
D
10-33 meters

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