HSC Science (Electronics) १२ वीं कक्षा - Maharashtra State Board Question Bank Solutions

Give trans isomer of [Co(NH₃)₄Cl₂]^⊕.

Why is it necessary to add H₂SO₄ while preparing the solution of CuSO₄?

Answer the following in one sentence :

Why is it necessary to add H₂ SO₄ while preparing the solution of CuSO₄?

Why is it necessary to add H₂SO₄ while preparing the solution of CuSO₄?

Answer the following in one sentence:

Why is it necessary to add H₂SO₄ while preparing the solution of CuSO₄?

Give the following named reaction.

Fittig reaction

Give the industrial applications of enzyme catalysis.

Write the reaction when finely divided MnO₂ is heated strongly with KOH and KC1O₃.

Write hydrolysis reaction of iodine trichloride.

Formulate the galvanic cell in which the following reaction occurs.

2Al(S) + 3Cu²⁺(aq) → 2Al³⁺(aq) + 3Cu(S)

Write structures for geometrical isomers of diamminebromochloroplatinum (II).

Obtain a relation, `k_2/k_1 = ((t_(1/2))_2)/((t_(1/2))_1)`, where k₁ and k₂ are rate constants while (t_1/2)₁  and  (t_1/2)₂  are half-life periods of the first order reaction at temperatures T₁ and T₂ respectively. Write the relation for activation energy.

Describe the action of alcoholic potassium hydroxide (alc. KOH) on ethyl bromide

Describe the action of alcoholic potassium hydroxide (alc. KOH) on n-propyl bromide

Describe the action of alcoholic potassium hydroxide (alc. KOH) on isopropyl bromide.

Explain the geometrical isomerism of the octahedral complex of the type [M(AA)₂B₂]^n± with a suitable example.

Define hydrolysis.

Which one of the following salts does not hydrolyse in water?

Draw the structure of oxyacid of sulphur in which the oxidation state of sulphur is + 4.

How is chlorine obtained by oxidation of HCl. Write the reactions using two oxidizing agents.