Q.
A white ppt. is obtained when:
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a
A solution of BaCl2 is treated with Na2CO3
b
A solution of CaCl2 is treated with Na2SO3
c
A solution of ZnSO2 is treated with Na2S
d
A solution of PbNO32 is treated with Na2CrO4
answer is A.
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Lear chromate is a yellow color compound
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