Please be patient as the PDF generation may take up to a minute.

The number of (i) sp² hybridized carbon atoms and (ii) $\mathrm{\pi }$ bonds are present in the following compound are:

1. 7, 5
2. 8, 6
3. 7, 6
4. 8, 5

From the following pairs, the two species that are not isostructural are : 

The specie with the shortest bond length is:

The correct increasing order of the polarizing power of the cationic species  ${\mathrm{K}}^{+},<mspace\; width="1em"></mspace>{\mathrm{Ca}}^{2+},<mspace\; width="1em"></mspace>{\mathrm{Mg}}^{2+},<mspace\; width="1em"></mspace>{\mathrm{Be}}^{2+}$is: 
1. ${\mathrm{Be}}^{2+}<{\mathrm{K}}^{+}<{\mathrm{Ca}}^{2+}<{\mathrm{Mg}}^{2+}$
2. ${\mathrm{K}}^{+}<{\mathrm{Ca}}^{2+}<{\mathrm{Mg}}^{2+}<{\mathrm{Be}}^{2+}$
3. ${\mathrm{Ca}}^{2+}<{\mathrm{Mg}}^{2+}<{\mathrm{Be}}^{2+}<{\mathrm{K}}^{+}$
4. ${\mathrm{Mg}}^{2+}<{\mathrm{Be}}^{2+}<{\mathrm{K}}^{+}<{\mathrm{Ca}}^{2+}$

The number and type of bonds between two carbon atoms in calcium carbide are :
1. One sigma, two pi
2. Two sigma, two pi
3. One sigma, one pi
4. Two sigma, one pi

The extent of lattice energy in an ionic compound depends on:
1. Packing of ions only 
2. Size of the ions only 
3. Charge and Size of the ions 
4. Charge on the ions only

A molecule having the smallest bond angle among the following is :

The hybridization of orbitals of N atom in $N{O}_3^{-},<mspace\; width="1em"></mspace>N{O}_2^{+,\hspace{0.17em}}and<mspace\; width="1em"></mspace>N{H}_4^{+}$ are respectively:
1. $sp,<mspace\; width="1em"></mspace>s{p}^2,<mspace\; width="1em"></mspace>s{p}^3$
2. $s{p}^2,<mspace\; width="1em"></mspace>sp,<mspace\; width="1em"></mspace>s{p}^3$
3. $sp,<mspace\; width="1em"></mspace>s{p}^3,<mspace\; width="1em"></mspace>s{p}^2$
4. $s{p}^2,<mspace\; width="1em"></mspace>s{p}^3,<mspace\; width="1em"></mspace>sp$

The number of hydrogen bonded water molecules(s) associated with \(\mathrm{C u S O_{4} . 5 H_{2} O}\) is:

The ionic species that has the greatest proton affinity to form stable compound is:
1. $H{S}^{-}$
2. $N{H}_2^{-}$
3. $F^{-}$
4. $l^{-}$

The correct order of C-O bond length among \(CO\), \(CO_ 3^ {2 -}\), and \(CO_2\) is:
1. $C{O}_2<C{O}_3^{2-}<CO$
2. $CO<C{O}_3^{2-}<C{O}_2$
3. $C{O}_3^{2-}<C{O}_2<CO$
4. $CO<C{O}_2<C{O}_3^{2-}$

Isostructural pair among the following is:
1. ${\mathrm{BCl}}_3$ $\mathrm{and}$ ${\mathrm{BrCl}}_3$
2. ${\mathrm{NH}}_3$ $\mathrm{and}$ ${\mathrm{NO}}_3^{-}$
3. ${\mathrm{NF}}_3$ $\mathrm{and}$ ${\mathrm{BF}}_3$
4. ${\mathrm{BF}}_4^{-}$ $\mathrm{and}$ ${\mathrm{NH}}_4^{+}$

Which bond angle would result in the maximum dipole moment for the triatomic molecule $X{Y}_2$ 
1. ${90}^{°}$
2. ${120}^{°}$
3. ${150}^{°}$
4. ${180}^{°}$