HSC Science (General) 11th Standard - Maharashtra State Board Question Bank Solutions

Give the total number of electrons around sulfur (S) in SF₆ compound.

What are the interacting forces present during the formation of a molecule of a compound?

Why is O₂ molecule paramagnetic?

How does the change of pressure affect the value of the equilibrium constant?

For the equilibrium,\[\ce{BaSO_4 (g) ⇌ Ba^{2+} (aq) + SO^{2-}_4 (aq)}\]. State the effect of Addition of Ba²⁺ ion.

For the equilibrium.

\[\ce{BaSO_4 (g) ⇌ Ba^{2+} (aq) + SO^{2-}_4 (aq)}\] state the effect of Removal of \[\ce{SO^{2-}_4}\] ion.

For the equilibrium. \[\ce{BaSO_4 (g) ⇌ Ba^{2+} (aq) + SO^{2-}_4 (aq)}\] state the effect of Addition of BaSO₄(s) on the equilibrium.

State and explain Le Chatelier’s principle suitably with reference to change in temperature.

State and explain Le Chatelier’s principle suitably with reference to change in concentration.

What is the effect of adding chloride on the equilibrium?

\[\ce{AgCl_{(g)} ⇌ Ag^+ (aq) + Cl^- (aq)}\]

You are given a very old sample of wood. How will you determine its age?

What is the stationary phase in Paper Chromatography?

Why do we see bands separating in column chromatography?

Select and write the most appropriate alternatives from the given choices.

The angle between the two covalent bonds is minimum in:

Give a reason for HF is a polar molecule

In Ammonia molecule the bond angle is 107° and in water molecule it is 104°35', although in both the central atoms are sp³ hybridized Explain.

Write the geometry and bond angle present in ammonia.

Which type of hybridization is present in the ammonia molecule?

F-Be-F is a liner molecule but H-O-H is angular. Explain.

In the case of bond formation in Acetylene molecule: How many covalent bonds are formed?