Chemical Technology General Knowledge Quiz | Chemical Technology General Knowledge Multiple Choice Questions(MCQs) & Answers

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Questions
1 65% oleum
A is prepared by distilling 20% oleum
B is prespared by chamber process
C does not contain free SO3
D contains 0.65% free SO3

Answer: is prepared by distilling 20% oleum
2 Contact process for the manufacture of sulphuric acid yields
A 80% H2SO4 only
B 98% H2SO4 and higher
C 95% H2SO4 only
D 90% H2SO4 only

Answer: 98% H2SO4 and higher
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3 For the production of sulphuric acid chamber process was developed first but produced acid of concentration
A less than 80%
B 98%
C 100%
D 95%

Answer: less than 80%
4 Equilibrium constant (Kp) at constant pressure for sulphur dioxide oxidation
A increases with increase in temperature
B decreases with increase in temperature
C remains unaffected with change in temperature
D decreases linearly with increase in temperature

Answer: decreases with increase in temperature
5 The equilibrium yield of sulphur trioxide obtained from the oxidation of sulphur dioxide can be increased by
A square root of system pressure at a given temperature
B cube root of system pressure at a given temperature
C square of system pressure at a given temperature
D cube of system pressure at a given temperature

Answer: square root of system pressure at a given temperature
6 The most favourable conditions of temperature and pressure for the oxidation of sulphur dioxide to sulphur trioxide are
A low temperature high pressure
B low temperature low pressure
C high temperature high pressure
D high temperature low pressure

Answer: low temperature high pressure
7 Poison for platinum catalyst is
A sulphuric acid is formed in solution
B phosphorous
C arsenic
D coke

Answer: arsenic
8 In the manufacture of sulphuric acid by contact process platinum catalyst was previously used but suffers from
A easy poisoning
B fragility
C high initial investment
D all of these answers

Answer: all of these answers
9 The catalyst used in the manufacture of sulphuric acid by contact process is
A iron
B aluminium oxid
C nickel
D vanadium pentoxide

Answer: vanadium pentoxide
10 Select the wrong statement. Compared to platinum catalyst vanadium pentoxide catalyst used in contact process for the manufacture of H2SO4
A is relatively immune to poisons
B requires low initial investment and 5% replacement per year
C requires low O2/SO2 to give economic conversion
D requires dilute SO2 input (7-10%)

Answer: requires low O2/SO2 to give economic conversion
11 Sulphuric acid produced by contact process is
A cheaper
B pure and concentrated
C of poor quality
D very dilute

Answer: pure and concentrated
12 When sulphur dioxide is passed through a golution of hydrogen sulphide in water
A sulphuric acid is formed in solution
B sulphurous acid is formed in solution
C sulphur is precipitated
D no change is observed

Answer: sulphur is precipitated
13 Sulphur is produced by oxidation-reduction of H2S. The catalyst used in this process is
A V2O5
B AI2O3
C Pt
D Ni

Answer: AI2O3
14 H2S from petroleum refinery streams is recovered by scrubbing with
A ethanol
B ethabol amines
C water
D 98.5% H2SO4

Answer: ethabol amines
15 Which of the following has maximum specific gravity at 18?C?
A 98.5% H2SO4
B 20% oleum
C 40% oleum
D 65% eloum

Answer: 65% eloum
16 Oleum gives fumes of
A H2SO4
B H2O+SO2
C SO2
D SO3

Answer: SO3
17 Oleum may be rephrsented by the formula
A H2SO4
B H2SO3
C H2S2O6
D H2S2O7

Answer: H2S2O7
18 Oleum is
A a misture of conc. H2SO4 and oil
B sulphuric acid which gives fumes of sulphur dioxide
C sulphuric acid saturated with sulphur trioxide
D a mixture of sulphuric and nitric acid

Answer: sulphuric acid saturated with sulphur trioxide
19 The allotrope of sulphur which is insoluble in carbon disulphide is
A monoclinic suphur
B rhombic sulphur
C milk of sulphur
D plastic sulphur

Answer: plastic sulphur
20 The form of sulphur which is the most stable at ordinary temperature is
A Monoclinic
B plastic
C rhombic
D flowers of sulphur

Answer: rhombic

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