Practical Work — Chemistry STD 10 — Question

Write observations: Ammonia gas is passed over heated copper (ll) oxide.

Give three uses of ammonium chloride.

(a) Give the correct IUPAC name and the functional group for each of the compounds whose structural formulae are given below:

(b) (i) Draw the structural formula of ethyne.
(ii) How is the structure of alkynes different from that of alkenes?

(a) What do you understand by the term electronegativity?
(b) Li, Be, B, C, N, O, F, Ne, Na, Mg, Al, Si, P, S, Cl, Ar, K. and Ca.
Amongst the list of elements given above pick out.
(i) Most electropositive element
(ii) Most electronegative element
(iii) Noble gases,

Study the flow chart given and give balanced chemical equations to represent the reactions A, B and C :

Give the characteristic properties of electrovalent compounds.