1
JEE Advanced 2019 Paper 2 Offline
MCQ (More than One Correct Answer)
+4
-1
Change Language
The cyanide process of gold extraction involves leaching out gold from its ore with CN$$-$$ in the presence of Q in water to form R. Subsequently, R is treated with T to obtain Au and Z. Choose the correct option(s).
A
Q is O2
B
Z is [Zn(CN)4]2$$-$$
C
T is Zn
D
R is [Au(CN)4]$$-$$
2
JEE Advanced 2019 Paper 2 Offline
MCQ (More than One Correct Answer)
+4
-1
Change Language
Which of the following reactions produce(s) propane as a major product?
A
JEE Advanced 2019 Paper 2 Offline Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 50 English Option 1
B
JEE Advanced 2019 Paper 2 Offline Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 50 English Option 2
C
JEE Advanced 2019 Paper 2 Offline Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 50 English Option 3
D
JEE Advanced 2019 Paper 2 Offline Chemistry - Aldehydes, Ketones and Carboxylic Acids Question 50 English Option 4
3
JEE Advanced 2019 Paper 2 Offline
Numerical
+3
-0
Change Language
The decomposition reaction

$$2{N_2}{O_5}(g)\buildrel \Delta \over \longrightarrow 2{N_2}{O_4}(g) + {O_2}(g)$$

is started in a closed cylinder under isothermal isochoric condition at an initial pressure of 1 atm. After Y $$ \times $$ 103 s, the pressure inside the cylinder is found to be 1.45 atm. If the rate constant of the reaction is 5 $$ \times $$ 10-4s-1, assuming ideal gas behaviour, the value of Y is ...............
Your input ____
4
JEE Advanced 2019 Paper 2 Offline
Numerical
+3
-0
Change Language
The mole fraction of urea in an aqueous urea solution containing 900 g of water is 0.05. If the density of the solution is 1.2 g cm$$-$$3, then molarity of urea solution is ................

(Given data : Molar masses of urea and water are 60 g mol$$-$$1 and 18 g mol$$-$$1, respectively)
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