Write note on combination reaction.

Write note on decomposition reaction

Explain displacement reaction ? Explain its two types with an example for each.

What are disproportionation reaction (or) auto redox reactions ? Give examples.

Arrange the elements silver, Zinc and copper in the order of their decreasing electron releasing tendency and justify your arrangement with an appropriate experiment.

Distinguish between the following.
(i) Atomic and molecular mass
(ii) Atomic mass and atomic weight
(iii) Empirical and molecular formula
(iv) Moles and molecules.

In a reaction, A + B₂ \(\longrightarrow \) AB₂, identify the limiting reagent if any in the following reaction mixtures
(i) 300 atoms of A + 200 molecules of B
(ii) 2 moles of A + 3 moles of B 
(iii) 100 atoms of A + 100 molecules of B
(iv) 5 moles of A + 2.5 moles of B
(v) 2.5 moles of A + 5 moles of B

Explain the term competitive electron transfer reaction with an example.

Balance the following equations by oxidation number method.
CuO + NH₃ ⟶ Cu +N₂ + H₂O

Balance the following equations by oxidation number method.
P + HNO₃ ⟶ HPO₃ + NO + H₂O

Balance the following equations by oxidation number method.
KIO₃ + SO₂ + H₂O ⟶ KHSO₄ + H₂SO₄ + I₂

Balance the following equations by oxidation number method.
C₆H₁₂O₆ + H₂SO₄ ⟶ CO₂ + SO₂ + H₂O

Balance the following equations by oxidation number method.
C₄H₁₀ + O₂ ⟶ CO₂ + H₂O

Balance the following equations by oxidation number method.
NH₃ + F₂ ⟶ HF + N₂

Balance the following equations by oxidation number method.
K₂Cr₂O₇ + HI ⟶ KI + Crl₃ + H₂O + I₂

Balance the following equations by oxidation number method.
Zn + HNO₃ ⟶ Zn(NO₃)₂ + N₂O + H₂O

Balance the following equations by oxidation number method.
Ag + HNO₃ ⟶ AgNO₃ + H₂O + NO

Balance the following equations by oxidation number method.
K₂Cr₂O₇ + FeSO₄ + H₂SO₄ ⟶ K₂SO₄ + Cr₂(SO₄)₃ + Fe₂(SO₄)₃ + H₂O

Balance the following equations by oxidation number method.
KBr + MnO₂ + H₂SO4 ⟶ KHSO₄ + MnSO₄ + H₂O + Br₂

Balance the following equations by oxidation number method.
KMnO₄ + KOH + H₂O₂ ⟶ K₂MnO₄ + O₂ + H₂O

An inorganic compound an analysis gave the following composition. Na = 14.31%, S = 9.97%, H = 6.22%, O = 69.5%. Assume all the hydrogen atoms are present in combination with oxygen as water of crystallization. The molar mass of the compound is 322 g mol^-1. Find its molecular formula.

Calculate the number of molecules of oxygen gas that occupies a volume of 224 ml at 273 K and 3 atm pressure.

Balance the following equation by ion electron method.
Cr₂O₇^2- + Fe²⁺ ⟶ Cr³⁺ + Fe²⁺ in acidic medium.

Balance the following equation by ion electron method.
Cr₂O₇^2- + C₂H₄O ⟶ Cr⁺³ + C₂H₄O₂

Balance the following equation by ion electron method.
Zn + NO₃^- ⟶ Zn + NH₄⁺²