1

IIT-JEE 2001 Screening

MCQ (Single Correct Answer)
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
2

IIT-JEE 2001 Screening

MCQ (Single Correct Answer)
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
3

IIT-JEE 2000 Screening

MCQ (Single Correct Answer)
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
4

IIT-JEE 2000 Screening

MCQ (Single Correct Answer)
The number of nodal planes in a px orbital is
A
one
B
two
C
three
D
zero

Joint Entrance Examination

JEE Advanced JEE Main

Graduate Aptitude Test in Engineering

GATE CSE GATE ECE GATE ME GATE PI GATE EE GATE CE GATE IN

Medical

NEET

CBSE

Class 12