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

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.

Answer the following.

Give two reactions showing the oxidising property of concentrated H₂SO₄.

Fluorine shows only –1 oxidation state while other halogens show –1, +1, +3, +5 and +7 oxidation states. Explain.

Answer the following.

Distinguish between rhombic sulfur and monoclinic sulfur.

How is SO₂ prepared in the laboratory from sodium sulfite?

Describe the manufacturing of H₂SO₄ by the contact process.

Choose the most correct option.

Magnetic moment of a metal complex is 5.9 B.M. Number of unpaired electrons in the complex is ______.