Question

Identify the following substances:
(i) An acidic gas which gives dense white fumes with NH3.
(ii) An alkane which can also be called a green house gas.
(iii) A solid which when kept in the open, forms a solution after sometime.
(iv) An alloy used in electrical fittings.
(v) A metal which gives hydrogen gas on reacting with both dilute acid and alkali.

Answer 1

Hey there!!

PLZ SEE BELOW - ..

(i) An acidic gas which give dense white fumes with NH3

Ans. HCl gas

(ii) An alklane which can also be called a green house gas.

Ans. Methane (CH4)

(iii) A solid which can be kept in the open, forms a solution after sometime

Ans. Iron (III) chloride (a delequescence substance)

(iv) An alloy used in electrical fittings

Ans. Nickel steel

(v) A metal which gives hydrogen gas on reacting with both dilute acid and alkali

Ans. Zinc


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Answer 2

Very Good Question...Thanks for asking It.

i)An acidic gas which gives dense white fumes with NH3:

HCl is acidic gas which reacts with NH3 and forms ammonium chloride.

NH3(g) HCl(g)---> NH4Cl(s)

ii)An alkane which can also be called a green house gas is methane --- CH4

iii)A solid which when kept in the open, forms a solution after sometime----
Iron(III) chloride---- a delequesene substance.

iv)An alloy used in electrical fittings is Nickel Steel.

V)A metal which gives hydrogen gas on reacting with both dilute acid and alkali --- Zinc

Zinc being amphoteric in nature reacts with acid and base both.