Explain the following terms with suitable examples.
(i) Gangue
(ii) slag

A hydride of 2nd period alkali metal (A) on reaction with compound of Boron (B) to give a reducing agent (C). Identify A, B and C.

Write the reason for the anomalous behaviour of Nitrogen.

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

Why do zirconium and Hafnium exhibit similar properties?

The E⁰_M²⁺/M value for copper is positive. Suggest a possible reason for this.

Give one test to differentiate [Co(NH₃)₅Cl]SO₄ and [Co(NH₃)₅SO₄]Cl.

What is the coordination entity formed when excess of liquid ammonia is added to an aqueous solution of copper sulphate?

What is meant by the term “coordination number”? What is the coordination number of atoms in a bcc structure?

Write a note on Frenkel defect.

The rate law for a reaction of A, B and C has been found to be rate = k[A]²[B][L]^3/2 How would the rate of reaction change when
(i) Concentration of [L] is quadrupled
(ii) Concentration of both [A] and [B] are doubled
(iii) Concentration of [A] is halved
(iv) Concentration of [A] is reduced to \(\left(\frac{1}{3}\right)\) and concentration of [L] is quadrupled.

Benzene diazonium chloride in aqueous solution decomposes according to the equation \({ C }_{ 6 }{ H }_{ 5 }{ N }_{ 2 }Cl\longrightarrow { C }_{ 6 }{ H }_{ 5 }Cl+{ N }_{ 2 }\)Starting with an initial concentration of 10g L^-1, the volume of N₂ gas obtained at 50 °C at different intervals of time was found to be as under:

t(min)	6	12	18	24	30	\(\infty \)
Vol of N2 (ml)	19.3	32.6	41.3	46.5	50.4	58.3

Show that the above reaction follows the first order kinetics. What is the value of the rate constant?

Derive an expression for the hydrolysis constant and degree of hydrolysis of salt of strong acid and weak base.

What is the pH of an aqueous solution obtained by mixing 6 gram of acetic acid and 8.2 gram of sodium acetate and making the volume equal to 500 ml. (Given: K_a for acetic acid is  \(1.8\times10^{-5}\))

The conductivity of a 0.01M solution of a 1 :1 weak electrolyte at 298K is 1.5\(\times\)10^-4 S cm⁻¹.
i) molar conductivity of the solution
ii) degree of dissociation and the dissociation constant of the weak electrolyte
Given that
\(\lambda^{0}_{cation}=248.2 \ S\) cm² mol^-1
\(\lambda^{0}_{anlon}=51.8 \ S\) cm² mol^-1

Is it possible to store copper sulphate in an iron vessel for a long time?
Given : \(E^{0}_{Cu^{2+}|Cu} = 0.34\) V and \(E^{0}_{Fe^{2+}|Fe} = -0.44\)V.

What is the difference between a sol and a gel?

Write a note on electro osmosis.

Predict the major product, when 2-methyl but -2-ene is converted into an alcohol in each of the following methods.
(i) Acid catalysed hydration
(ii) Hydroboration
(iii) Hydroxylation using Baeyer's reagent

How is phenol prepared from
i) chloro benzene
ii) isopropyl benzene

Identify A, B and C
 

Identify A, B and C

How will you prepare propan – 1- amine from
i) butane nitrile
ii) propanamide
ii) 1- nitropropane

Write a short note on peptide bond.

Write the complete set of reactions occurring in the zone of reduction in the blast furnace in the metallurgy of iron.

Find out the oxidation state of carbon in each of the following:
(i) CaC₂
(ii) H₂CO₃
(iii) HCN
(iv) CO

Discuss the anomalous nature of fluorine.

Complete the following reactions?
i) Cr² + 2e^- ⟶
ii) Mn²⁺ + 2e^- ⟶
iii) Fe²⁺ + 2e^- ⟶
iv) CO²⁺ + 2e^- ⟶

Draw the structure of the following homoleptic metal carbonyl.
(i) [Ni(CO)₄]
(ii) [Fe(CO)₅]
(iii) [Cr(CO)₆]

The rate constant, the activation energy and frequency factor of a chemical reaction at 25^oC are 3.0 x 10^-4 S^-1; 104.4 kJ mol^-1  and 6.0 x 10¹⁴ S^-1 respectively. What is the value of the rate constant when T ⟶ ∞?