substance which absorbs co2 and violently reacts with h2o

Substance which absorbs $$C{O_2}$$ and violently reacts with $${H_2}O$$ with sound is :

A. $${H_2}S{O_4}$$

B. $$CaC{O_3}$$

C. $$ZnO$$

D. $$CaO$$

Answer : $$CaO$$

Solution :
$$\eqalign{ & CaO + C{O_2} \to CaC{O_3} \cr & CaO + {H_2}O \to Ca{\left( {OH} \right)_2} \cr & {\text{hissing sound and}}\,\Delta H = - ve \cr} $$

Releted MCQ Question on
Inorganic Chemistry >> S - Block Elements

Releted Question 1

A substance absorbs $$C{O_2}$$ and voilently reacts with water. The substance is

A. $$CaC{O_3}$$

B. $$CaO$$

C. $${H_2}S{O_4}$$

D. $$ZnO$$

View Answer

Releted Question 2

Calcium is obtained by

A. electrolysis of molten $$CaC{l_2}.$$

B. electrolysis of solution of $$CaC{l_2}$$ in water.

C. Reduction of $$CaC{l_2}$$ with carbon.

D. roasting of limestone.

View Answer

Releted Question 3

A solution of sodium metal in liquid ammonia is strongly reducing due to the presence of

A. sodium atoms

B. sodium hydride

C. sodium amide

D. solvated electrons

View Answer

Releted Question 4

The hydration energy of $$M{g^{ + + }}$$ is larger than that of :

A. $$A{l^{3 + }}$$

B. $$N{a^ + }$$

C. $$B{e^{ + + }}$$

D. $$M{g^{3 + }}$$

View Answer

Substance which absorbs $$C{O_2}$$ and violently reacts with $${H_2}O$$ with sound is :

Releted MCQ Question on
Inorganic Chemistry >> S - Block Elements

A substance absorbs $$C{O_2}$$ and voilently reacts with water. The substance is

Calcium is obtained by

A solution of sodium metal in liquid ammonia is strongly reducing due to the presence of

The hydration energy of $$M{g^{ + + }}$$ is larger than that of :

Practice More Releted MCQ Question on
S - Block Elements

Practice More MCQ Question on Chemistry Section

Substance which absorbs $$C{O_2}$$ and violently reacts with $${H_2}O$$ with sound is :

Releted MCQ Question on Inorganic Chemistry >> S - Block Elements

A substance absorbs $$C{O_2}$$ and voilently reacts with water. The substance is

Calcium is obtained by

A solution of sodium metal in liquid ammonia is strongly reducing due to the presence of

The hydration energy of $$M{g^{ + + }}$$ is larger than that of :

Practice More Releted MCQ Question on S - Block Elements

Practice More MCQ Question on Chemistry Section

Releted MCQ Question on
Inorganic Chemistry >> S - Block Elements

Practice More Releted MCQ Question on
S - Block Elements