Observe the three columns in which column-1 represents chemical reactions, column-2 represents nature of substance with colour and physical state while column-3 represents differentiate products.
Column-1 | Column-2 | Column-3 | |||
(I) | Cu + dil. HNO3 | (i) | Colourless gas, Neutral | (P) | NO |
(II) | Cu + conc. HNO3 | (ii) | Blue solid, Acidic | (Q) | NO2 |
(III) | Zn + dil. HNO3 | (iii) | Brown gas, Acidic | (R) | N2O |
(IV) | Zn + conc. HNO3 | (iv) | Colourless solid, Acidic | (S) | N2O3 |
(i) Which of the following set of combination is correct ?
Text Solution
Verified by ExpertsCHECK THE SOLUTION.
(i)c (ii)d (iii)b
Sol. Explanations :
3Cu + 8HNO 3 (dil.) 
3Cu (NO 3 ) 2 + 
+ 4H 2 O
3Cu + 4HNO 3 (conc.) 
Cu (NO 3 ) 2 + 
+ 2H 2 O
4Zn + 10HNO 3 (dil.) 
4Zn (NO 3 ) 2 + 
+ 5H 2 O
Zn + 4HNO 3 (conc.) 
Zn (NO 3 ) 2 + 
+ 2H 2 O
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