Subject :NSO Class : Class 7
Subject :NSO Class : Class 3
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Subject :NSO Class : Class 5
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Subject :NSO Class : Class 9
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Subject :NSO Class : Class 9
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Subject :NSO Class : Class 9
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Subject :NSO Class : Class 7
Observe the given reaction sequence carefully.
Acetic acid + Sodium hydrogen carbonate
(i)
(i) + Ca(OH)2
(ii) + Water
What could (i) and (ii) be?
(i) | (ii) | |
A | CaCO3 | CO2 |
B | H2O | CaCO3 |
C | CO2 | CaCO3 |
D | H2O | CO2 |
Question is incomplete
Ans 1:
Class : Class 7
Should have given (i) plus water plus sodium acetate, just giving (i) makes it a lot more confusing and makes the second reaction a guessing game. Question should have been framed better.
Ans 3:
Class : Class 8
No, it's not... it is just made quite tricky! the answer is C.
It asks two question simultaneously: 1. vinegar plus baking soda evolves which gas? 2. What is formed when CO2 reacts with lime water?
Hope u know their answers!! ;)