In the hydrocarbon

     CH₃-CH=CH-CH₂-C$\equiv$CH

     6      5     4   3      2    1

The state of hybridisation of carbons 1,3 and 5 are in the following sequence

(1) sp², sp, sp³                       

(2) sp, sp³, sp²

(3) sp, sp², sp³                       

(4) sp³, sp², sp

Which of the following compounds has a higher hydration energy than the lattice energy?

1. BaSO₄                           

2. MgSO₄

3. CaSO₄                           

4. SrSO₄

In which of the following molecules are all the bonds not equal ?

(1) ClF₃

(2) BF₃

(3) AlF₃

(4) NF₃

The correct order of electronegativity of hybrid orbitals of carbon is:

(1) sp>sp²<sp³             

(2) sp>sp²>sp³

(3) sp<sp²>sp³             

(4) sp<sp²<sp³

Which of the following species has a linear shape?

(1) ${\mathrm{NO}}_2^{-}$

(2) SO₂

(3) ${\mathrm{NO}}_2^{+}$

(4) O₃

Which of the following is the most basic oxide?
(1) Al₂O₃

(2) Sb₂O₃

(3) Bi₂O₃

(4) SeO₂

The number of unpaired electrons in a paramagnetic diatomic molecule of an element with atomic mass 16 is :

1. 2

2. 3

3. 4

4. 1

Which of the following is not isostructural with SiCl₄?

(a) SCl₄            (b) ${\mathrm{SO}}_4^{2-}$               (c) ${\mathrm{PO}}_4^{3-}$                 (d) ${\mathrm{NH}}_4^{+}$

Correct order of strength of H-bond in the following compounds is : 

(1) $H_{2}O<mspace\; width="1em"></mspace><mspace\; width="1em"></mspace>><mspace\; width="1em"></mspace>H_2{O}_2<mspace\; width="1em"></mspace>><mspace\; width="1em"></mspace>HF<mspace\; width="1em"></mspace>><mspace\; width="1em"></mspace>H_{2}S$ 

(2) $HF<mspace\; width="1em"></mspace>\ge <mspace\; width="1em"></mspace>H_2{O}_2<mspace\; width="1em"></mspace>><mspace\; width="1em"></mspace>H_{2}O<mspace\; width="1em"></mspace>><mspace\; width="1em"></mspace>H_{2}S$

(3) $HF<mspace\; width="1em"></mspace>>\hspace{0.17em}{H}_{2}O<mspace\; width="1em"></mspace>><mspace\; width="1em"></mspace>H_{2}S<mspace\; width="1em"></mspace>><mspace\; width="1em"></mspace>H_2{O}_2$

(4) $HF<mspace\; width="1em"></mspace>>\hspace{0.17em}{H}_2{O}_2<mspace\; width="1em"></mspace>><mspace\; width="1em"></mspace>H_{2}O<mspace\; width="1em"></mspace>><mspace\; width="1em"></mspace>H_{2}S$

Molecule having non-polar as well as polar bonds but the molecule as a whole is polar:

(a) $S_2{F}_2<mspace\; width="1em"></mspace>$

(b) ${\mathrm{N}}_2{\mathrm{O}}_4$

(c) ${\mathrm{Si}}_2{\mathrm{H}}_6$                                           

(d) ${\mathrm{I}}_2{\mathrm{Cl}}_6$