Which of the following is/are pseudo solids? I. KCl II. Barium chloride dihydrate III. Rubber IV. Solid cake left after distillation of coal tar

Question

Which of the following is/are pseudo solids? I. KCl II. Barium chloride dihydrate III. Rubber IV. Solid cake left after distillation of coal tar (A) I,III (B) II,III (C) III,IV (D) only III

Tardigrade Admin · Accepted Answer

As we know, the solids are most stable in crystalline form. However, if a solid is formed rapidly, its atoms or molecules do not have time to align themselves and may become locked in positions other than those of a regular crystal. Such solids are called as pseudo solids. Hence, rubber and solid cake left after distillation of coal tar are examples of pseudo solids.

K Cl & B a C l_{2} \cdot 2 H_{2} O

are ionic solids and not pseudo solids.

Q. Which of the following is/are pseudo solids?
$I .$ $K Cl$
$II .$ Barium chloride dihydrate
$III .$ Rubber
$I V .$ Solid cake left after distillation of coal tar

$I, III$

$II, III$

$III, I V$

only $III$

Q. Which of the following is/are pseudo solids? I. KCl II. Barium chloride dihydrate III. Rubber IV. Solid cake left after distillation of coal tar

I,III

II,III

III,IV

only III

Q. Which of the following is/are pseudo solids?
$I .$ $K Cl$
$II .$ Barium chloride dihydrate
$III .$ Rubber
$I V .$ Solid cake left after distillation of coal tar

$I, III$

$II, III$

$III, I V$

only $III$