Explain the electrometallurgy of aluminium.

Write a short note on hydroboration.

Give the uses of sulphuric acid.

Explain why Cr²⁺ is strongly reducing while Mn³⁺ is strongly oxidizing.

What is linkage isomerism? Explain with an example.

Why ionic crystals are hard and brittle?

Write Arrhenius equation and explains the terms involved.

The half life of a first order reaction x →products is 6.932 x 10⁴ s at 500K. What percentage of x would be decomposed on heating at 500K for 100 min. (e^0.06 = 1.06).

Calculate the pH of 0.1M CH₃COOH solution. Dissociation constant of acetic acid is \(1.8\times10^{-5}\).

0.1M NaCl solution is placed in two different cells having cell constant 0.5 and 0.25 cm^-1 respectively. Which of the two will have greater value of specific conductance.

What happens when a colloidal sol of Fe(OH)₃ and As₂S₃ are mixed?

Write the chemical equation for Williamson synthesis of 2-ethoxy – 2- methyl pentane starting from ethanol and 2 – methyl pentan -2-ol.

An alkene (A) on ozonolysis gives propanone and aldehyde (B). When (B) is oxidised (C) is obtained. (C) is treated with Br₂/P gives (D) which on hydrolysis gives (E). When propanone is treated with HCN followed by hydrolysis gives (E). Identify A, B, C, D and E.

Identify A,B,and C
CH₃- NO₂ \(\overset { { L }_{ 1 }{AlH }_{ 4 } }{ \underset { {} }{ \longrightarrow } }\) A  \(\overset { { 2CH_3 }{Ch_2Br } }{ \underset { {} }{ \longrightarrow } }\) B \(\overset { {H}_{ 2 }{SO}_{ 4 } }{ \underset { {} }{ \longrightarrow } } \) C

What are reducing and non – reducing sugars?

Which sweetening agent are used to prepare sweets for a diabetic patient?