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प्रश्न
Which statement(s) is/are CORRECT about applications of lanthanoid metals/ions and their compounds?
(I) The optoelectronics applications use lanthanoid ions as active ions in luminescent materials.
(II) Lanthanoid compounds are used in television tubes.
(III) Lanthanoids are used in hybrid cars, superconductors and permanent magnets.
विकल्प
II
III
l, II
I, II, III
MCQ
उत्तर
I, II, III
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Properties of Lanthanoids
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
