NEET
Chemistry
The s-Block Elements / s-ब्लॉक के तत्व
Sample Paper
Self Evaluation Test - The s-Blcok Elements
question_answer
A solid compound 'X' on heating gives \[C{{O}_{2}}\]gas and a residue. The residue mixed with water forms 'Y'. On passing an excess of CO,., through 'Y' water, a clear solution 'Z', is obtained. On boil. 'Z', compound "X' is reformed. The compound 'X' is
A)\[Ca{{(HC{{O}_{3}})}_{2}}\]
B)\[CaC{{O}_{3}}\]
C)\[N{{a}_{2}}C{{O}_{3}}\]
D)\[{{K}_{2}}C{{O}_{3}}\]
Correct Answer:
B
Solution :
[b] The given properties coincide with \[CaC{{O}_{3}}\]