Kerala PSC Previous Years Question Paper & Answer
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Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'CHEMIST IN FACTORIES AND BOILERS ENGLISH ' And exam conducted in the year 2020. And Question paper code was '009/2020'. Medium of question paper was in Malayalam or English . Booklet Alphacode was 'A'. Answer keys are given at the bottom, but we suggest you to try answering the questions yourself and compare the key along wih to check your performance. Because we would like you to do and practice by yourself.
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Which of the following is true for solutions showing dissociation?
{A) Vant Hoff factor is less than one ற Vant Hoff factor is greater than णा
(@ Vant Hoff factor is equal to one യ) Vant Hoff factor is equal to zero
The heat of combustion மீ CH,(g), C(s) and Hy(g) at 25°C are —212.4 keal, —94.0 keal and
—68.4 keal respectively. Heat of formation of CH, will be :
(ಹ) + 50.0 ممما (3) + 18.4 ०81
{C) -18.4 keal (D) +212.8 keal
Osmotic pressure of equimolar solutions of sugar (I), AlCl; (II} and BaCl, (IIT) is in the
order of :
@) 1511511 © 1<11<1
© जा യ 11751
In cold countries ethylene glycol is added to water in radiators of automobiles during winter.
This is to :
{A) lower the boiling point {B) lower the freezing point
{C) reduce visocity (12) increase the vapour pressure
If 50 ml of 2N HCl is mixed with 50 ml of 2M KOH ,the solution will be :
(| acidic {B) neutral
{C) கண்ட (2) cannot be predicted
If the solubility of a salt Ag,SO, is X mol/litre, then solubility product is :
^ ॐ B X
(0 ಖಲಿ യ 4
pH of solution is 3.0 .If its hydrogen ion concentration is decreased by 100 times ,then the pH
of the solution becomes :
) 10 (8) .08
രു 5.0 (D) 9.0
Purple of Cassius is :
(ಹ) colloidal solution of silver {B) colloidal solution of gold
{C) colloidal solution of platinum യ) colloidal solution of starch
5 009/2020
[P.T.O0.]
