HSC Science (General) इयत्ता १२ वी - Maharashtra State Board Question Bank Solutions

Select appropriate answers for the following.

Which of the following has one lone pair of electrons?

Select appropriate answers for the following.

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.

Answer the following.

What is the action of bromine on magnesium metal?

Write the names of allotropic forms of selenium.

The pK_a value of HCl is −7.0 and that of HI is −10.0. Which is the stronger acid?

Complete the following.

\[\ce{ICl3 + H2O -> \underline{}\underline{}\underline{}\underline{} + \underline{}\underline{}\underline{}\underline{} + ICl}\]

Complete the following.

l₂ + KClO₃ → _______ + KIO₃

Complete the following.

BrCl + H₂O → _______ + HCl

Complete the following.

Cl₂ + ClF₃  → _______

Complete the following.

H₂C = CH₂ + ICl → _______

Complete the following.

\[\ce{XeF4 + SiO2 -> {..........} + SiF4}\]

Complete the following.

\[\ce{XeF6 + 6H2O -> \underline{}\underline{}\underline{}\underline{} + HF}\]

Complete the following.

\[\ce{XeOF4 + H2O -> \underline{}\underline{}\underline{}\underline{} + HF}\]

Match the following:

What is the oxidation state of xenon in the following compounds?

XeOF₄, XeO₃, XeF₆, XeF₄, XeF₂.

Answer the following.

Acidic character of hydrides of group 16 elements increases from H₂O to H₂Te. Explain.