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

Solve the following problem:

Perform the following operation:

1.05 × 10⁻⁴ − 9.7 × 10⁻⁵

Solve the following problem:

Perform the following operation:

4.11 × 10⁻³ + 8.1 ×10⁻⁴

Solve the following problem:

Perform the following operation:

2.12 × 10⁶ − 3.5 × 10⁵

Which of the following techniques is used for the purification of solid organic compounds?

1. Crystallization
2. Distillation

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

When the following bond types are listed in decreasing order of strength (strongest first). Which is the correct order?

Draw Lewis dot diagram for the following.

Hydrogen (H₂)

Draw Lewis dot diagram for the following.

Water (H₂O)

Draw Lewis dot diagram for the following.

Carbon dioxide (CO₂)

Draw Lewis dot diagram for the following.

Methane (CH₄)

Draw Lewis dot diagram for the following.

Lifthium Fluoride (LiF)

Draw Lewis electron dot structure of HF

Draw Lewis electron dot structure of C₂H₆

Draw Lewis electron dot structure of C₂H₄

Draw Lewis electron dot structure of CF₃Cl

Draw Lewis electron dot structure of SO₂

Explain in brief with one example of an ionic bond.

Explain in brief with one example of a covalent bond

Explain in brief with one example of coordinate bond

Answer in one sentence:

Covalent bond is directional in nature. Justify.

Answer in one sentence:

Name type of adsorption in which vander Waals focres are present.