Draw the structures of the following:

(i) XeF₂
(ii) BrF₃

(a) Calculate  for the reaction
Mg (s) + Cu²⁺ (aq) → Mg²⁺ (aq) + Cu (s)
Given : E°_cell = + 2.71 V, 1 F = 96500 C mol⁻¹
(b) Name the type of cell which was used in Apollo space programme for providing electrical power.

13.

The following data were obtained during the first order thermal decomposition of SO2Cl2 at a constant volume :
SO₂Cl₂ (g) → SO₂ (g) + Cl₂ (g)

Experiment	Time/s−1	Total pressure/atm
1	0	0·4
2	100	0·7

Calculate the rate constant.
(Given : log 4 = 0·6021, log 2 = 0·3010)

What are emulsions? What are their different types? Give one example of each type.

Give reasons for the following:
(i) (CH₃)3P = O exists but (CH₃)₃N = O does not.
(ii) Oxygen has less electron gain enthalpy with the negative sign than sulphur.
(iii) H₃PO₂ is a stronger reducing agent than H₃PO₃.

(i) Write the IUPAC name of the complex [Cr(NH₃)₄Cl₂]Cl.
(ii) What type of isomerism is exhibited by the complex [Co(en)₃]³⁺?
(en = ethane-1,2-diamine)
(iii) Why is [NiCl₄]²⁻ paramagnetic but [Ni(CO)₄] is diamagnetic?
(At. nos. : Cr = 24, Co = 27, Ni = 28)

Which of the following is a natural polymer?

Buna-S, protein, PVC

The conversion of primary aromatic amines into diazonium salts is known as __________ .

What are the products of hydrolysis of sucrose?

Write the structure of p-methyl benzaldehyde.