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

What is the rate constant?

Write IUPAC name of  \[\ce{SO^2-_4}\] ligand.

Write IUPAC name of CO ligand.

Write the structure of isoprene and the polymer obtained from it.

Explain the variation of vapour pressures with mole fractions of binary solutions of two volatile liquids forming ideal solutions.

State Raoult’s law for solutions containing volatile solutes.

An element crystallises in fee structure. If molar mass of element is 72.7 g mol ^-1, the mass of its one unit cell will be ______.

Write the relationship between mole fraction of solvent and vapour pressure of solution.

What is a chiral carbon atom?

Write the IUPAC name of the following complex:

K[Pt(NH₃)Cl₃]

Write IUPAC name of the following complex:

[CoCl₂(en)₂]⁺

What is nanochemistry?

Why ethers possess a small net dipole moment?

Define first-order reaction.

A mixture of two liquids A and B have vapour pressures 3.4 × 10⁴ Mn^-2 and 5.2 × 10⁴ Nm^-2. If the mole fraction of A is 0.85, find the vapour pressure of the solution.

Differentiate between polysaccharides and polypeptides.

The following data were obtained during the decomposition of SO₂Cl₂ at the constant volume. SO₂Cl₂ →SO_2(g) + Cl_2(g)

Calculate the rate constant of the reaction.

Phenol is reduced to ______ on heating with zinc dust.

Identify the chiral molecule from the following.

Identify chiral molecules from the following.

a.

\[\begin{array}{cc}
\ce{CH3 - CH - CH2 - CH3}\\
|\phantom{.........}\\
\ce{OH}\phantom{.......}
\end{array}\]

b.

\[\begin{array}{cc}
\ce{CH3 - CH2 - CH - CH2 - CH3}\\
|\phantom{..}\\
\ce{Br}\phantom{.}
\end{array}\]

c.

\[\begin{array}{cc}
\ce{CH3 - CH2 - CH2 - CH2 - Br}
\end{array}\]

d.

\[\begin{array}{cc}
\ce{CH3 - CH - CH3 - CH3}\\
|\phantom{.........}\\
\ce{CH3}\phantom{.......}
\end{array}\]