1
JEE Advanced 2016 Paper 1 Offline
MCQ (More than One Correct Answer)
+4
-2
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A plot of the number of neutrons (N) against the number of protons (P) of stable nuclei exhibits upward deviation from linearity for atomic number, Z > 20. For an unstable nucleus having N/P ratio less than 1, the possible mode(s) of decay is(are)
A
$$\beta ^-$$-decay ( $$\beta$$ emission)
B
orbital or K-electron capture
C
neutron emission
D
$$\beta ^+$$-decay (positron emission)
2
JEE Advanced 2015 Paper 1 Offline
MCQ (More than One Correct Answer)
+4
-2

The % yield of ammonia as a function of time in the reaction

N2(g) + 3H2(g) $$\rightleftharpoons$$ 2NH3(g), $$\Delta$$H < 0 at (P, T1) is given below:

JEE Advanced 2015 Paper 1 Offline Chemistry - Chemical Kinetics and Nuclear Chemistry Question 9 English

If this reactions is conducted at (P, T2), with T2 > T1, the % yield of ammonia as a function of time is represented by

A
JEE Advanced 2015 Paper 1 Offline Chemistry - Chemical Kinetics and Nuclear Chemistry Question 9 English Option 1
B
JEE Advanced 2015 Paper 1 Offline Chemistry - Chemical Kinetics and Nuclear Chemistry Question 9 English Option 2
C
JEE Advanced 2015 Paper 1 Offline Chemistry - Chemical Kinetics and Nuclear Chemistry Question 9 English Option 3
D
JEE Advanced 2015 Paper 1 Offline Chemistry - Chemical Kinetics and Nuclear Chemistry Question 9 English Option 4
3
JEE Advanced 2013 Paper 2 Offline
MCQ (More than One Correct Answer)
+4
-1
In the nuclear transmutation
9Be4 + X $$\to$$ 8Be4 + Y
(X, Y) is (are)
A
$$(\gamma ,n)$$
B
(p, D)
C
(n, D)
D
$$(\gamma ,p)$$
4
IIT-JEE 2011 Paper 2 Offline
MCQ (More than One Correct Answer)
+3
-0.75
For the first order reaction
2N2O5 (g) $$\to$$ 4NO2 (g) + O2 (g)
A
the concentration of the reactant decreases exponentially with time
B
the half-life of the reaction decreases with increasing temperature
C
the half-life of the reaction depends on the initial concentration of the reactant
D
the reaction proceeds to 99.6% completion in eight half-life duration
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