JEE Main 2018 (Online) 15th April Evening Slot | p-Block Elements Question 128 | Chemistry

JEE Main 2018 (Online) 15th April Evening Slot

MCQ (Single Correct Answer)

-1

For per gram of reactant, the maximum quantity of N₂ gas is produced in which of the following thermal decomposition reactions ?
(Given : Atomic wt. - Cr = 52 u, Ba = 137 u)

(NH₄)₂Cr₂O₇(s) $$ \to $$ N₂(g) + 4H₂O(g) + Cr₂O₃(s)

2NH₄NO₃(s) $$ \to $$ 2 N₂(g) + 4H₂O(g) + O₂(g)

Ba(N₃)₂(s) $$ \to $$ Ba(s) + 3N₂(g)

2NH₃(g) $$ \to $$ N₂(g) + 3H₂(g)

JEE Main 2018 (Online) 15th April Evening Slot

MCQ (Single Correct Answer)

-1

In KO₂, the nature of oxygen species and the oxydation state of oxygen atom are, respectively :

Oxide and $$-$$ 2

Superoxide and $$-$$ 1/2

Peroxide and $$-$$ 1/2

Superoxide and $$-$$ 1

JEE Main 2018 (Online) 15th April Evening Slot

MCQ (Single Correct Answer)

-1

In XeO₃F₂, the number of bond pair(s), $$\pi $$-bond(s) and lone pair(s) on Xe atom respectively are :

5, 2, 0

4, 2, 2

5, 3, 0

4, 4, 0

JEE Main 2018 (Online) 15th April Morning Slot

MCQ (Single Correct Answer)

-1

In graphite and diamond, the percentage of p-characters of the hybrid orbitals in hybridisation are respectively :

33 and 25

33 and 75

50 and 75

67 and 75

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