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

Derive relationship between pH and pOH.

Write the reaction of Acetyl chloride on triethylamine.

Discuss the mechanism of alkaline hydrolysis of methyl bromide.

Write two uses of ether

Write two uses of salt bridge.

Convert Methyl iodide to methyl isocyanide

Complete the following reaction giving major product.

\[\begin{array}{cc}
\ce{CH3}\phantom{...............}\\
|\phantom{..................}\\
\ce{CH3 - C - CH2 - Cl->[Na/dry ether]A}\\
|\phantom{..................}\\
\ce{CH3}\phantom{...............}\\
\end{array}\]

Define pOH.

The spin only magnetic moment of Cr³⁺ cation is ______.

The product of the following reaction is

\[\begin{array}{cc}
\ce{O}\phantom{.........}\\
||\phantom{.........}\\
\ce{C2H5 - C - CH3 ->[H2/Ni][\Delta] \phantom{..}?}\end{array}\]

Calculate effective atomic number of \[\ce{[Co(NH3)6]^3+}\] ion.

What is the action of following on ethyl bromide?

alcoholic sodium hydroxide

Write a classification of proteins with an example.

If unit of rate constant is mol dm⁻³s⁻¹, the order of reaction would be ______.

Complete the reaction:

\[\ce{CH3CH2Cl ->[AgCN][alc.\Delta]}\] ?

Arrange the following in the increasing order of the property mentioned:

\[\ce{HOCl}\], \[\ce{HClO2}\], \[\ce{HClO3}\], \[\ce{HClO4}\] (acidic strength)

Arrange the following in the increasing order of the property mentioned:

\[\ce{HF}\], \[\ce{HCl}\], \[\ce{HBr}\], \[\ce{HI}\] (thermal stability)

Predict the type of cubic lattice of a solid element having edge length of 400 pm and density is 6.25 g/ml.
(Atomic mass of element = 60)

Define pH.

Derive the relationship between pH and pOH.