HSC Science (General) इयत्ता ११ वी - Maharashtra State Board Question Bank Solutions

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.

Answer in one sentence:

Name type of adsorption in which the compound is formed.

Choose the correct option.

For the following redox reactions, find the correct statement.

\[\ce{Sn^{2⊕} + 2Fe^{3⊕}->Sn^{4⊕} + 2Fe^{2⊕}}\]

On the basis of even-odd of protons and neutrons, what type of nuclides is most stable?

The nuclides with odd number of both protons and neutrons are the least stable. Why?

Referring the stability belt of stable nuclides, which nuclides are β^– and β⁺ emitters? Why?

Explain with an example each nuclear transmutation and artificial radioactivity. What is the difference between them?

What is the binding energy per nucleon?

Explain with the help of a diagram how binding energy per nucleon affects nuclear stability?

How does N/Z ratio affect nuclear stability? Explain with a suitable diagram.

Write two factors responsible for its stability.

The total binding energy of ⁵⁸Ni is 508 MeV. What is its binding energy per nucleon?

Justify that the following reaction is redox reaction; identify the species oxidized/reduced, which acts as an oxidant and which acts as a reductant.

\[\ce{2Cu2O_{(S)} + Cu2S_{(S)}->6Cu_{(S)} + SO2_{(g)}}\]

A produces B by α-emission. If B is in group 16 of the periodic table, what is the group of A?