Give reasons for the following in one or two sentences only :
`''BeCl_(2)` can be easily hydrolysed.

Give reasons for following in one or two sentences: CrO_3 is an acid anhydride?

Give reason for the following in one or two sentences : ''Solid carbon dioxide is known as dry ice.''

Give reasons for the following in one or two sentences. 'Acetic acid can be halogenated in the presence of P and Cl_2 , but formic acid cannot be halogenated in the same way'.

Give reasons for the following in one or two sentences : i. Methane does not react with chloring in dark. ii. Propene reacts with HBr to give isopropy bormide but does not give -n propyl bromide.

Give reasons for the following in one or two sentences : 'Graphite is used as a solid lubricant.''

Give reasons for the following in one or two sentences: "Dimethyl amine is a stronger base than trimethyl amine" in H_2 O .

Given reasons for the following in one or two sentences: silver bromide is used in photography?

Give reasons for the following in one or two sentences "Nitrobenzene does not undergo Friedel-Craft's alkylation."

Give reason for the following in one or two sentences: 'Although benzene in highly unsaturated, normally it does not undergo addition reaction'.

Give reasons for the following in one or two sentences ' The central carbon - carbon bond in 1,3- butadiene is shorter than that in n- butane ' .