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PREVIOUS
1
AIEEE 2002
MCQ (Single Correct Answer)
+4
-1
Change Language
If half-life of a substance is 5 yrs, then the total amount of substance left after 15 years, when initial amount is 64 grams is
A
16 grams
B
2 grams
C
32 grams
D
8 grams
2
AIEEE 2002
MCQ (Single Correct Answer)
+4
-1
Change Language
The integrated rate equation is Rt = log C0 - log Ct . The straight line graph is obtained by plotting
A
time vs log Ct
B
$${1 \over {time}}$$ vs Ct
C
time vs Ct
D
$${1 \over {time}}$$ vs $${1 \over {{C_t}}}$$
3
AIEEE 2002
MCQ (Single Correct Answer)
+4
-1
Change Language
$$\beta$$ - particle is emitted in radioactivity by
A
conversion of proton to neutron
B
from outermost orbit
C
conversion of neutron to proton
D
$$\beta$$ -particle is not emitted
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