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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In the titration of K,Cr,0, iodometrically, near the end point the colour of the solution
becomes :
(¢ green
(09 ரவி
The Indicator used in iodometric titration is :
۵ص हा
{C) Methyl orange
In qualitative analysis ed is under :
(8) Igroup
09 III group
160 )8(
قباط )0
{B) Litmus
(D) Starch
(3) II group
(D} IVgroup
A mixture when rubbed with organic acid smells like vinegar. It contains :
( sulphite
{C) nitrite
‘Which of the following is a primary standard?
(മ 120,
(© Na,CO,
(3) nitrate
(D) acetate
© L
യ H,80,
When NH,Cl 15 added to NH,OH solution the dissociation of ammonium hydroxide is
reduced :
(ಹ) common ion effect
{C) oxidation
{B) hydrolysis
{D) reduction
The solubility product of BaSO, is 1.5 x10™° at 18°C. Its solubility in water at 18°C is :
1.5x10™® moles litre- (ه)
8.9x10™® moles litre ©(
The basis principle of paper chromatography is :
{A) adsorption
{C) absorption
009/2020 8
B) 1.5x107 moles litre-!
യ 8.9 107 moles litre-
{B) partition
യ diffusion
