Kerala PSC Previous Years Question Paper & Answer

Title : Technician Grade-II (Boiler Operator) - Kerala Co-operative Milk Marketing Federation Ltd
Question Code : A

Page:14


Below are the scanned copy of Kerala Public Service Commission (KPSC) Question Paper with answer keys of Exam Name 'Technician Grade-II (Boiler Operator) - Kerala Co-operative Milk Marketing Federation Ltd ' And exam conducted in the year 2022. And Question paper code was '057/2022'. 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.

page: 14 out of 16
Excerpt of Question Code: 057/2022

90.

91.

92.

93.

94.

95.

Which hydrocarbons have chain structure?
(A) Paraffins (B) Naphthalenes
(C) Benzene (D) None of these

In a given combustion process

(i) The maximum temperature achieved through adiabatic complete combustion
varies with the type of reaction and percent of theoretical air supplied.

(ii) An increase in the air fuel ratio will effect an increase in the maximum
temperature

(iii) For a given fuel and a given pressure and temperature of the reactants,
the maximum adiabatic flame temperature that can be achieved is with a
stoichiometric mixture.

Which of these statements are correct?

(A) Only (i) and (ii) (B) Only (ii) and (iii)

(C) Only (i) and (iii) (D) All are correct

If a coal sample gave the analysis by weight of carbon 84% minimum weight of
oxygen required per kg of coal for complete combustion is

(A) 2.24 kg (B) 0.32 kg

(C) 3.08 kg (D) None of these

Weight of dry flue gas per kg of fuel is

(A) Weight of carbon in 1 kg of fuel to the weight of carbon in 1 kg of flue gas
(B) Weight of carbon in 1 kg of flue gas to the weight of carbon in 1 kg of fuel
(C) Weight of oxygen in 1 kg of flue gas to the weight of carbon in 1 kg of fuel
(D) Weight of oxygen in 1 kg of fuel to the weight of carbon in 1 kg of flue gas

For complete conversion to water or steam, 1 kg of hydrogen requires
(A) 4 kg of oxygen (B) 8 kg of oxygen
(C) 9 kg of oxygen (D) None of these

Mass of carbon contained in 1 kg of flue gas is calculated from

(A) Mass of carbon dioxide and mass of carbon monoxide present in them
(B) Mass of carbon dioxide and mass of oxygen in them

(C) Mass of carbon monoxide and mass of oxygen in them

(D) None of these

0957/2022

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