An unknown organic compound X has a relative molecular mass of 180. It is a…
An unknown organic compound X has a relative molecular mass of 180. It is a colourless crystaline solid,…
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The three-dimensional shape of methane is
The three-dimensional shape of methane is A. hexagonal B. trigonal C. linear D. tetrahedral E. cubical Correct Answer:…
Some copper (ll) sulphate pentahydrate (CuSO4 5H2O), was heated at 120 oC with the following…
Some copper (ll) sulphate pentahydrate (CuSO4 5H2O), was heated at 120 oC with the following results. Wt of…
If an element has the electronic configuration 1s 2 2s2 2p3 3s2 3p4, it is
If an element has the electronic configuration 1s 2 2s2 2p3 3s2 3p4, it is A. a metal…
Consecutive members of an alkane homologous serires differ by
Consecutive members of an alkane homologous serires differ by A. CH B. CH2 C. CH3 D. CnHn E.…
The flame used by welders in cutting metals is
The flame used by welders in cutting metals is A. butane gas flame B. acetylene flame C. kerosene…
The petroleum fraction that is used in heating furnaces in industries is
The petroleum fraction that is used in heating furnaces in industries is A. diesel oil B. gasoline C.…
The process of converting linear alkanes to branched chain and cyclic hydrocarbons by heating in…
The process of converting linear alkanes to branched chain and cyclic hydrocarbons by heating in the presence of…
Polystyrene is widely used as packaging materials for fragile objects during transportation because of its
Polystyrene is widely used as packaging materials for fragile objects during transportation because of its A. lightness B.…
A hydrocarbon has an empirical formula CH and a vapour density of 39. Determine its…
A hydrocarbon has an empirical formula CH and a vapour density of 39. Determine its molecular formula. [C…