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Hydrated aluminium chloride is an ionic compound and soluble in water giving -
1. Al³⁺ and Cl^- ions
2. ${\left[\mathrm{Al}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6\right]}^{3+}$ and Cl^- ions
3. ${\left[{\mathrm{AlCl}}_2{\left({\mathrm{H}}_2\mathrm{O}\right)}_4\right]}^{+}$ and ${\left[{\mathrm{AlCl}}_4{\left({\mathrm{H}}_2\mathrm{O}\right)}_2\right]}^{-}$  ions
4. None of the above

${\mathrm{Al}}_4{\mathrm{C}}_3$ is an ionic carbide. It is also known as :
1. Acetylide
2. Methanide
3. Allyide
4. Alloy

${\mathrm{AlCl}}_3$ on hydrolysis gives -
1. ${\mathrm{Al}}_2{\mathrm{O}}_3.{\mathrm{H}}_2\mathrm{O}$
2. $\mathrm{Al}{\left(\mathrm{OH}\right)}_3$
3. ${\mathrm{Al}}_2{\mathrm{O}}_3$
4. ${\mathrm{AlCl}}_3.6{\mathrm{H}}_2\mathrm{O}$

Anhydrous aluminium chloride fumes in moist air owing to the formation of :
1. gaseous aluminium chloride
2. chlorine
3. chlorine dioxide
4. hydrogen chloride

The silicate anion in the mineral kinolte is a chain of three SiO₄ tetrahedra, that share corners with adjacent tetrahedra. The charge of the silicate anion is :
1. -4
2. -8
3. -6
4. -2

A compound that is sparingly soluble in cold water and fairly soluble in hot water is-
1. $\mathrm{Pb}{\left({\mathrm{NO}}_3\right)}_2$
2. ${\mathrm{PbCl}}_2$
3. ${\mathrm{PbSO}}_4$
4. ${\mathrm{PbCrO}}_4$

Concentrated nitric acid reacts with iodine to give :
1. HOI
2. HI
3. HOIO₂
4. HOIO₃

Hydrolysis of one mole of peroxodi-sulphuric acid produces :
1. two moles of sulphuric acid
2. two moles of peroxomono-sulphuric acid
3. one mole of sulphuric acid, one mole of peroxomono-sulphuric acid
4. one mole of sulphuric acid, one mole of peroxomono-sulphuric acid and one mole of hydrogen peroxide 

The dipole moment of ${\mathrm{H}}_2{\mathrm{O}}_2$ is more than that of ${\mathrm{H}}_2\mathrm{O}$ but ${\mathrm{H}}_2{\mathrm{O}}_2$ is not a good solvent because :
1. It has a very high dielectric constant so that ionic compounds cannot be dissolved in it.
2. It does not act as an oxidising agent
3. It acts as a reducing agent
4. It dissociates easily and acts as an oxidising agent in chemical reactions 

Thermally most stable compound is :
1. ${\mathrm{HOClO}}_3$
2. ${\mathrm{HOClO}}_2$
3. $\mathrm{HOCl}$
4. $\mathrm{HOClO}$

A halogen oxide that is used for estimation of carbon monoxide in automobile exhaust gases-
1. ${\mathrm{Cl}}_2{\mathrm{O}}_7$
2. ${\mathrm{I}}_2{\mathrm{O}}_5$
3. ${\mathrm{ClO}}_2$
4. ${\mathrm{BrO}}_3$

The correct statement among the following is -
1. F₂ has higher dissociation energy than Cl₂
2. F has higher electron affinity than Cl
3. HF is stronger acid than HCl
4. Boiling point increases down the group in halogens

Only iodine forms hepta-fluoride IF₇, but chlorine and bromine give penta-fluorides. The reason for this is:
1. low electron affinity of iodine
2. unusual pentagonal bipyramidal structure of ${\mathrm{IF}}_7$
3. that the larger iodine atom can accommodate more number of smaller fluorine atom around it 
4. low chemical reactivity of ${\mathrm{IF}}_7$

Borax is converted into crystalline boron by the following steps :
$\mathrm{Borax}\stackrel{\mathrm{X}}{\to }{\mathrm{H}}_3{\mathrm{BO}}_3\stackrel{∆}{\to }{\mathrm{B}}_2{\mathrm{O}}_3\underset{∆}{\overset{\mathrm{Y}}{\to }}\mathrm{B}$   
X and Y are respectively-
1. HCl, Mg
2. HCl, C
3. C, Al
4. HCl, Al

The dissolution of $\mathrm{Al}{\left(\mathrm{OH}\right)}_3$ by a solution of NaOH results in the formation of :
1. ${\left[\mathrm{Al}{\left({\mathrm{H}}_2\mathrm{O}\right)}_4{\left(\mathrm{OH}\right)}_2\right]}^{+}$
2. $\left[\mathrm{Al}{\left({\mathrm{H}}_2\mathrm{O}\right)}_3{\left(\mathrm{OH}\right)}_3\right]$
3. ${\left[\mathrm{Al}{\left({\mathrm{H}}_2\mathrm{O}\right)}_2{\left(\mathrm{OH}\right)}_4\right]}^{-}$
4. $\left[\mathrm{Al}{\left({\mathrm{H}}_2\mathrm{O}\right)}_6{\left(\mathrm{OH}\right)}_3\right]$

Choose the correct sequence for the geometry of the given molecules 
Borazone, Borazole, ${\mathrm{B}}_3{\mathrm{O}}_6^{3-}$, ${\mathrm{Fe}}_2{\mathrm{Cl}}_6$, trimer of FCn
['P' stands for planar and 'NP' stands for non-planar]
1. NP,NP,NP,P,P
2. P,P,NP,NP,P
3. NP,NP,NP,P,NP
4. P,P,P,NP,P

The incorrect statement among the following regarding borax is -
1. It is a useful primary standard for titrating against acids
2. One mole of borax can be used as a buffer
3. Aqueous solution of borax can be used as buffer 
4. It is made up of two triangular BO₃ units and two tetrahedral BO₄ units

Among the following statement which one is true ?
1. ${\mathrm{NH}}_3$ is less soluble than ${\mathrm{PH}}_3$ in water
2. ${\mathrm{NH}}_3$ is stronger base and stronger reducing agent than ${\mathrm{PH}}_3$
3. ${\mathrm{NH}}_3$ has higher boiling point than ${\mathrm{PH}}_3$ and has lower melting point than ${\mathrm{PH}}_3$
4. ${\mathrm{PH}}_3$ is stronger reducing agent than ${\mathrm{NH}}_3$ and it has lower critical temperature than ${\mathrm{NH}}_3$

A compound that gives NO₂ on heating is -
1. ${\mathrm{NaNO}}_3$
2. ${\mathrm{AgNO}}_3$
3. ${\mathrm{NH}}_4{\mathrm{NO}}_3$
4. ${\mathrm{NH}}_4\mathrm{NO}2$

$\mathrm{A}+{\mathrm{H}}_2\mathrm{O}\to \mathrm{B}+\mathrm{HCl}$
$\mathrm{B}+{\mathrm{H}}_2\mathrm{O}\to \mathrm{C}+\mathrm{HCl}$
Compound (A), (B) and (C) will be respectively :
1. ${\mathrm{PCl}}_5, {\mathrm{POCl}}_3, {\mathrm{H}}_3{\mathrm{PO}}_3$
2. ${\mathrm{PCl}}_5,{\mathrm{POCl}}_3, {\mathrm{H}}_3{\mathrm{PO}}_4$
3. ${\mathrm{SOCl}}_2, {\mathrm{POCl}}_3, {\mathrm{H}}_3{\mathrm{PO}}_3$
4. ${\mathrm{PCl}}_3, {\mathrm{POCl}}_3, {\mathrm{H}}_3{\mathrm{PO}}_4$