HSC Science (Electronics) 12th Standard Board Exam - Maharashtra State Board Question Bank Solutions

Write the chemical reaction of action of Cl₂ on excess NH₃.

What happens when chlorine reacts with?

Al

What happens when chlorine reacts with?

Na

What happens when chlorine reacts with?

S₈

What happens when chlorine reacts with?

P₄

Define the Enthalpy of sublimation.

Define the Enthalpy of vaporization.

Why work done in vacuum is zero?

Define the Enthalpy of atomization.

Which nanoparticles act as highly effective bacterial disinfectant, removing E.Coli from water?

Name the plant which is an example of self-cleaning.

Write the name of nanomaterial which is used in water purification.

The enthalpy change for the chemical reaction \[\ce{H2O_{(s)} -> H2O_{(l)}}\] is called enthalpy of ______.

The name of metal nanoparticle which acts as highly effective bacterial disinfectant in water purification process is ______.

Write structure of adipic acid.

Draw a neat, labelled diagram of a standard hydrogen electrode (SHE).

Explain the following reaction:

Cannizzaro reaction

Write the SI unit of the cryoscopic constant.

What is the action of the following reagents on ethyl amine?

Chloroform and caustic potash

Explain the formation of [CoF₆]^3Θ complex with respect to

1. Hybridisation
2. Magnetic properties
3. Inner/outer complex
4. Geometry