Related Questions

Ethylene oxide is produced by oxidation of ethylene in presence of AgO catalyst at
A 1 atm & 100°C
B 5 atm & 275°C
C 100 atm & 500°C
D 50 atm & 1000°C
Thoria is an expensive refractory material and is radioactive in nature. Thorium oxide is used in the manufacture of
A Segar cones
B Muffles for muffle furnaces
C Insulating bricks
D Crucibles used for melting of high purity metals
For the hydrogenation of oils (i) __________ is commonly used as catalyst and (ii) __________ is a catalyst poison.
A (i) platinum (ii) sulphur
B (i) palladium (ii) oxygen
C (i) nickel (ii) sulphur
D (i) nickel (ii) oxygen
Which metal oxide is an amphoteric oxide?
A iron
B aluminium
C sodium
D potassium
নিম্নের কোন oxide টিকে উভধর্মী oxide বলে?
A CaO
B MgO
C ZnO
D CuO
The catalyst used in the manufacture of DDT (from chloral and chlorobenzene) is
A Dilute H2SO4
B Oleum
C Ultraviolet light
D None of these
Benzoyl chloride is not used as a catalyst in the manufacture of
A Polystyrene
B Polyvinyl acetate
C Polypropylene
D Polyvinyl chloride-co-vinylacetate
The catalyst used in the manufacture of DDT is
A Alumina
B Silica
C 20% oleum
D Aluminium chloride
Catalyst used during the manufacture of 'Vanaspati Ghee' is
A Zinc
B Nickel
C Platinum
D Copper
Platinum catalyst used in the earlier days of sulphuric acid manufacture by contact process suffers from the drawback like
A High cost
B Fragile nature
C Easy poisoning tendency
D All of the above

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