SAMPLE QUESTION PAPER 5

An alkene gives propanal and pentane-$3$-one on ozonolysis, what is the name and structure formula of the alkane?

Write methods of preparation of alkynes.

Calculate the total pressure in a mixture of $8 \mathrm{g}$ of dioxygen and $4 \mathrm{g}$ of dihydrogen confined in a vessel of $1 {\mathrm{dm}}^3$ at $27°\mathrm{C}$.

Calculate total number of angular nodes and radial nodes present in $3\mathrm{p}$-orbital.

How ${\mathrm{d}}_{\mathrm{xy}}$ and ${\mathrm{d}}_{{\mathrm{x}}^2-{\mathrm{y}}^2}$ orbitals are related?

Nickel ($\mathrm{Ni}$) atom can lose two electrons to give ${\mathrm{Ni}}^{2+}$ ion. From which orbital will nickel lose the electrons? ($\mathrm{Z}$ for $\mathrm{Ni} = 28$)

What are the features of long form of periodic table?

What are disproportionation reactions? Explain with example.