Question

5. Identify the chemical equation which represents a complete balanced equation for the reaction
of barium chloride with sodium sulphate to produce barium sulphate and sodium chloride.
(a) BaCl(aq) + NaySO,(aq) Baso,() + NaClaq)
(6) BaCl,(aq) + Na,SO, ay) 2BaSO,() + 2NaCl(aq)
(c) 2BaCl(aq) + Na SO,(ag) 2BaSO,(s) + NaCl(aq)
(c/) BaCl(aq) + Na,so, (a) BaSO,(s) + 2NaCl(aq)
6. Which of the following is not a physical change?
[NCERT Exemplar
(a) Boiling of water to give water vapour
(b) Melting of ice to give water
(c) Dissolution of salum water
(d) Combustion of Liquefied Petroleum Gas (LPG)
7. Which among the following is (are) double displacement reaction(s)? [NCERT Exemplar)
(i) Pb + Cuci,
РЬСІ, +Cu
(in) Na,so, + BaCl, Baso, + 2Naci
(in) C +0, CO,
(1) CH, + 20, - CO, + 2H,0
(a) () and (n)
(5) (17only
(c) ) and (1)
(d) (um) and (re)
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Answer 1

Answer:

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