1
IIT-JEE 1985
MCQ (Single Correct Answer)
+1
-0.25
Electromangnetic radiation with maximum wavelength is:
A
ultraviolet
B
radiowave
C
X-ray
D
infrared
2
IIT-JEE 1984
MCQ (Single Correct Answer)
+1
-0.25
The increasing order (lowest first) for the values of e/m (charges/mass) for electron (e), proton (p), neutron (n) and alpha particle ($$\alpha$$) is:
A
e, p, n, $$\alpha$$
B
n, p, e, $$\alpha$$
C
n, p, $$\alpha$$, e
D
n, $$\alpha$$, p, e
3
IIT-JEE 1984
MCQ (Single Correct Answer)
+1
-0.25
Correct set of four quantum numbers for the valence (outermost) electron of rubidium (Z = 37) is
A
5, 0, 0, $$ + {1 \over 2}$$
B
5, 1, 0, $$ + {1 \over 2}$$
C
5, 1, 1, $$ + {1 \over 2}$$
D
6, 0, 0, $$ + {1 \over 2}$$
4
IIT-JEE 1984
MCQ (Single Correct Answer)
+1
-0.25
Which electronic level would allow the hydrogen atom to absorb a photon but not to emit a photon?
A
3s
B
2p
C
2s
D
1s
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