A solution of zinc chloride should not be stored in a container made of
tin
copper
aluminium
lead
Correct answer is C
No explanation has been provided for this answer.
Two solutions containing Pb2+ and AI3+ respectively can be distingusihed using
NaOH(aq)
NH3(aq)
conc. HCI3
conc. HCI
Correct answer is D
No explanation has been provided for this answer.
1
2
4
6
Correct answer is D
One mole of aluminium from aluminium oxide gives three elecrrons. Two moles of aluminium from aluminium oxide give six electrons
Which of the following subtances will not produce effervescence with dilute hydeochloric acid?
Copper (ll) trioxocarbonate (IV)
Potassium hydrogentrioxocarbonate (lV)
Zinc granules
Sodium chloride
Correct answer is D
No explanation has been provided for this answer.
4,1,2
1,2,1
2,1,2
4,2,1
Correct answer is D
\(MnO_{2(s)} + xHCI_{(aq)} → MnCI_{2(g)} + yH_2O_{(l)} + zCI_{2(g)}\)
compare the number of each atom of the elements on both sides of the chemical equation.
x = 4, y = 2 and z = 1