1
JEE Main 2019 (Online) 9th January Morning Slot
MCQ (Single Correct Answer)
+4
-1
The following results were obtained during kinetic studies of the reaction ;
2A + B $$ \to $$ Products
The time (in minutes) required to consume half of A is :
2A + B $$ \to $$ Products
| Experiment | [A] (in mol L$$-$$1) | [b] (in mol L$$-$$1) | Initial Rate of reaction (In mol L$$-$$1 min$$-$$1) |
|---|---|---|---|
| I | 0.10 | 0.20 | 6.93 G 10$$-$$3 |
| II | 0.10 | 0.25 | 6.93 G 10$$-$$3 |
| III | 0.20 | 0.30 | 1.386 G 10$$-$$2 |
The time (in minutes) required to consume half of A is :
2
JEE Main 2018 (Online) 16th April Morning Slot
MCQ (Single Correct Answer)
+4
-1
If 50% of a reaction occurs in 100 second and 75% of the reaction occurs in 200 secod, the order of this reaction is :
3
JEE Main 2018 (Offline)
MCQ (Single Correct Answer)
+4
-1
At 518oC the rate of decomposition of a sample of gaseous acetaldehyde initially at a pressure of 363 Torr,
was 1.00 Torr s–1 when 5% had reacted and 0.5 Torr s–1 when 33% had reacted. The order of the reaction is
4
JEE Main 2018 (Online) 15th April Evening Slot
MCQ (Single Correct Answer)
+4
-1
For a first order reaction, A $$ \to $$ P, t1/2 (half-life) is 10 days The time required for $${1 \over 4}$$th conversion of A (in days) is : (ln 2 = 0.693, ln 3 = 1.1)
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