1
IIT-JEE 2001 Screening
MCQ (Single Correct Answer)
+1
-0.25
The wavelength associated with a golf ball weighing 200 g and moving at speed of 5 m/h is of the order
A
10-10 m
B
10-20 m
C
10-30 m
D
10-40 m
2
IIT-JEE 2001 Screening
MCQ (Single Correct Answer)
+1
-0.25
The quantum numbers +1/2 and -1/2 for the electron spin represent
A
rotation of the electron in clockwise and anticlockwise direction respectively
B
rotation of the electron in anticlockwise and clockwise direction respectively
C
magnetic moment of the electron pointing up and down respectively
D
two quantum mechanical spin states which have no classical analogue
3
IIT-JEE 2000 Screening
MCQ (Single Correct Answer)
+1
-0.25
The number of nodal planes in a px orbital is
A
one
B
two
C
three
D
zero
4
IIT-JEE 2000 Screening
MCQ (Single Correct Answer)
+1
-0.25
The electronic configuration of an element is 1s2, 2s2 2p6, 3s2 3p6 3d5, 4s1 This represents its
A
excited state
B
ground state
C
cationic form
D
anionic form
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