1
KCET 2017
MCQ (Single Correct Answer)
+1
-0
The particle emitted in the decay of ${ }_{92}^{238} \mathrm{U}$ to ${ }_{92}^{234} \mathrm{U}$
A
$2 \alpha$ and $2 \beta$
B
$1 \alpha$ and $2 \beta$
C
$1 \alpha$ only
D
$1 \alpha$ and $1 \beta$
2
KCET 2017
MCQ (Single Correct Answer)
+1
-0
The mass defect of ${ }_2^4 \mathrm{He}$ is 0.03 u . The binding energy per nucleon of helium (in MeV) is
A
6.9825
B
27.93
C
2.793
D
69.825
3
KCET 2017
MCQ (Single Correct Answer)
+1
-0
The energy (in eV ) required to excite an electron from $n=2$ to $n=4$ state in hydrogen atom is
A
-0.85
B
+425
C
-3.4
D
+2.55
4
KCET 2017
MCQ (Single Correct Answer)
+1
-0
In a nuclear reactor, the function of the moderator is to decreases
A
number of neutrons
B
speed of neutrons
C
escape of neutrons
D
temperature of the reactor
KCET Subjects
EXAM MAP