1
AIEEE 2002
+4
-1
The differential rate law for the reaction H2 + I2 $$\to$$ 2HI is
A
$$- {{d\left[ {{H_2}} \right]} \over {dt}}$$ = $$- {{d\left[ {{I_2}} \right]} \over {dt}}$$ = $$- {{d\left[ {{HI}} \right]} \over {dt}}$$
B
$${{d\left[ {{H_2}} \right]} \over {dt}}$$ = $${{d\left[ {{I_2}} \right]} \over {dt}}$$ = $${{d\left[ {{HI}} \right]} \over {dt}}$$
C
$${1 \over 2}{{d\left[ {{H_2}} \right]} \over {dt}}$$ = $${1 \over 2}{{d\left[ {{I_2}} \right]} \over {dt}}$$ = $$- {{d\left[ {{HI}} \right]} \over {dt}}$$
D
$$- 2{{d\left[ {{H_2}} \right]} \over {dt}}$$ = $$- 2{{d\left[ {{I_2}} \right]} \over {dt}}$$ = $${{d\left[ {{HI}} \right]} \over {dt}}$$
2
AIEEE 2002
+4
-1
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
3
AIEEE 2002
+4
-1
$$\beta$$ - 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
4
AIEEE 2002
+4
-1
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 $${1 \over {{C_t}}}$$
EXAM MAP
Medical
NEET