3690. Chemical formula of metaphosphoric acid is
H₃PO₄
H₄P₂O₇
HPO₃
Same as that of pyrophosphoric acid
✅ The correct answer is option C.
3695. In the manufacture of H₃ PO₄ (ortho), ; strong H₂ SO₄ leaching wet process as compared to electric furnace process
Uses lower grade phosphate rock
Requires lower capital investment in the plant
Produces lower purity acid
Is very costly
✅ The correct answer is option C.
3702. Oxidation of ammonia is
Exothermic
Endothermic
Non-catalytic
Autocatalytic
✅ The correct answer is option A.
3708. In __________ converter for ammonia synthesis, the catalyst is arranged in the form of a single continuous bed.
Fauser-Monte Catini
Claude
Udhe
Kellog
✅ The correct answer is option B.
3651. Heavy water plant is not located at
Kota and Baroda
Talcher (Orissa)
Tuticorin(Tamilnadu)
Korba
✅ The correct answer is option D.
3646. __________ have the same mass number, but different nuclear charge.
Isotopes
Isobars
Isotones
none of these
✅ The correct answer is option B.
3652. Liquid metal (e.g, . molten sodium) is preferred as a coolant in case of a/an __________ reactor.
homogeneous
graphite moderated
fast breeder
enriched uranium (3% U-235) fuelled
✅ The correct answer is option C.
3656. Extraction of uranium from its ore is done using __________ methods.
electrometallurgical
pyrometallurgical
chemical
physical beneficiation
✅ The correct answer is option C.