Chemistry Test ...

A compound X contains 32% of A, 20% of B and remaining percentage of C. Then, the empirical formula of X is :

(Given atomic masses of A = 64; B = 40; C = 32 u)

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In which of the following group of periodic table mp / bp increase down the group ?

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Consider the following reaction in a sealed vessel at equilibrium with concentrations of N₂ = 3.0 × 10^–3 M, O₂ = 4.2 × 10^–3 M and NO = 2.8 × 10^–3 M.

2NO(g) ⇌ N₂(g) + O₂(g)

If 0.1 mol L^–1 of NO(g) is taken in a closed vessel, what will be degree of dissociation (α) of NO(g) at equilibrium?

For the reaction:

2SO₂(g) + O₂(g) ⇌ 2SO₃(g); ΔH = – 45.2 kcals

The number of moles of SO₃ will increase on

Given below are two statements:

Statement I: The boiling point of hydrides of Group 16 elements follow the order

H₂O > H₂Te > H₂Se > H₂S.

Statement II: On the basis of molecular mass, H₂O is expected to have lower boiling point than the other members of the group but due to the presence of extensive H-bonding in H₂O, it has higher boiling point.

In the light of the above statements, choose the correct answer from the options given below: 

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The colligative property of a colloidal solution compared to solution of non-electrolyte of the same concentration will be