Question

Consider the following statements and arrange in the order of true/false as given in the codes.

$S_1:MgC{l}_2.6H_{2}O$ on heating gives $M{g}_{2}OC{l}_2(MgO.MgC{l}_2)$ because of hydrolysis.

$S_2$ : The softness of group I-A metals increases down the group with increasing atomic number.

$S_3$ : Plaster of Paris is $CaS{O}_4.H_{2}O$

$S_4$ : Sodium carbonate is made by solvay process but the same process is not extended to the manufacture of potassium carbonate.

• A. TTTF
• B. TFFT
• C. TTFT
• D. TTTT

Answer 1

The correct option is C TTFT

$S_1$ : $MgC{l}_2.6H_{2}O\to MgC{l}_2+6H_{2}O$

$MgC{l}_2+H_{2}O\to MgO+HCl$

$S_2$ : The softness increases down the group because the atmoic size increase and bonding between them decreases.

$S_3$: Plaster of Paris : $CaS{O}_4.1/2H_{2}O$

$S_4$: Potassium carbonate is not prepared using solvay process because potassium carbonate is partially soluble in water and does not precipitate out.