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

Answer the following in one sentence :

Calculate the pH of 0.01 M sulphuric acid.

Derive the relation pH + pOH = 14.

Answer the following in brief :

The pH of a weak monobasic acid is 3.2 in its 0.02 M solution. Calculate its dissociation constant.

In NaOH solution [OH^–] is 2.87 × 10^–4. Calculate the pH of the solution.

Define pH.

Answer the following in one or two sentences.

Write any two functions of salt bridge.

Answer the following in one or two sentences.

Formulate a cell from the following electrode reactions:

`"Au"_(("aq"))^(3+) + 3"e"^(-) -> "Au"_(("s"))`

Mg_(s) → `"Mg"_(("aq"))^(2+)` + 2e^-

Answer the following in one or two sentences.

What is the significance of the single vertical line and double vertical line in the formulation galvanic cell?

Answer the following :

The pH of rainwater collected in a certain region of Maharashtra on a particular day was 5.1. Calculate the H⁺ ion concentration of the rainwater and its percent dissociation.

What is a salt bridge?

Select appropriate answers for the following.

Stability of interhalogen compounds follows the order _______.

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BrCl reacts with water to form _______.

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Chlorine reacts with excess of fluorine to form _______.

In interhalogen compounds, which of the following halogens is never the central atom?

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Which of the following has one lone pair of electrons?

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In which of the following pairs, molecules are paired with their correct shapes?

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Among the known interhalogen compounds, the maximum number of atoms is _______.

Answer the following.

Write the order of the thermal stability of the hydrides of group 16 elements.

Answer the following.

What is the oxidation state of Te in TeO₃?

Give two uses of ClO₂.