Choose the reaction(s) from the following options, for which the standard enthalpy of reaction of equal to the standard enthalpy of formation.
A
2C(g) + 3H2(g) $$ \to $$ C2H6(g)
B
2H2(g) + O2(g) $$ \to $$ 2H2O(l)
C
$${3 \over 2}$$O2(g) $$ \to $$ O3(g)
D
$${1 \over 8}$$S8(s) + O2(g) $$ \to $$ SO2(g)
2
JEE Advanced 2019 Paper 1 Offline
MCQ (More than One Correct Answer)
+4
-1
A tin chloride Q undergoes the following reactions (not balanced)
$$Q + C{l^ - } \to X$$
$$Q + M{e_3}N \to Y$$
$$Q + CuC{l_2} \to Z + CuCl$$
X is a monoanion having pyramidal geometry. Both Y and Z are neutral compounds.
Choose the correct option(s).
A
There is a coordinate bond in Y
B
The central atom in Z has one lone pair of electrons.
C
The oxidation state of the central atom in Z is +2
D
The central atom in X is sp3 hybridised
3
JEE Advanced 2019 Paper 1 Offline
MCQ (More than One Correct Answer)
+4
-1
In the decay sequence.
x1, x2, x3 and x4 are particles/radiation emitted by the respective isotopes. The correct option(s) is(are)
A
Z is an isotope of uranium
B
x2 is $$\beta $$-
C
x1 will deflect towards negatively charged plate
D
x3 is $$\gamma $$-ray
4
JEE Advanced 2019 Paper 1 Offline
MCQ (More than One Correct Answer)
+4
-1
Which of the following statement(s) is(are) correct regarding the root mean square speed (Urms) and average translational kinetic energy (Eav) of a molecule in a gas at equilibrium?
A
Urms is inversely proportional to the square root of its molecular mass.
B
Urms is doubled when its temperature is increased four times.
C
Eavg is doubled when its temperature is increased four times.
D
Eavg at a given temperature does not depend on its molecular mass.
