HSC Science (Electronics) 12th Standard Board Exam - Maharashtra State Board Question Bank Solutions

The co-ordination number of Co³⁺ ion in the complex [Co(NH₃)₄Cl₂]^⊕ is ______.

From Wurtz reaction one can not produce:

Carbylamine test is the distinguishing test for ______.

Write the value of `(2.303 RT)/F` in the Nernst equation?

Draw the structure of hypochlorous acid.

Draw structure of sulphur molecule (Rhombic sulphur). Mention bond angle and bond length.

A compound has a hep structure. Calculate the number of voids in 0.4 mol of it.

Write the product formed during Chlorobenzene treated with chlorine reactions.

Write the product formed by chlorobenzene treated with a fuming H₂SO₄ reaction.

Write the product formed Anisole treated with HI reaction.

Define organometallic compound.

Write the product in the following reaction:

Bromobenzene reacts with methyl bromide and sodium metal in presence of dry ether.

Write the product in the following reaction:

Chlorobenzene reacts with sodium metal in presence of dry ether.

Write the four applications of emf series.

Write two uses of salt bridge.

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

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

What is nano material? 

What is the action of following on ethyl bromide?

silver nitrite

Write the reaction involved in sol-gel process during hydrolysis.