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

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Colourless components on chromatogram can not be observed by the following:

Give names of two materials used as stationary phase in chromatography.

Define the Stationary phase.

Name the different types of Chromatography and explain the principles underlying them.

How do you visualize colourless compounds after separation in TLC and Paper Chromatography?

Label the diagram and explain the process in your words.

Compare TLC and Paper Chromatography techniques.

Define the term Inhibition.

Define the term Catalysis.

Mention various applications of equilibrium constant.

Identify nuclear fusion reaction.

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The process by which nuclei having low masses are united to form nuclei with large masses is ______.

Explain in brief, nuclear fission.

The energy produced in nuclear fusion is much larger than that produced in nuclear fission. Why is it difficult to use fusion to produce energy?

Balance the nuclear reaction:

\[\ce{^118_54Xe -> ? + I^118_54}\]

Write one point that differentiates nuclear reactions from chemical reactions.

Write the fusion reactions occurring in the Sun and stars.

Calculate the energy in MeV released in the nuclear reaction \[\ce{^174_77Ir -> ^170_75Re + ^4_2He}\]

Atomic mass: Ir = 173.97 u, Re = 169.96 u and He 4.0026 u

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Haber’s process is used for preparation of _______

What are silicones?