Cobalt | MCQs

    Q1: To demonstrate transpiration from the leaves, the student paper is made up of _____ chemical.

    پتیوں سے منتقلی کا مظاہرہ کرنے کے لئے ، طلباء کا کاغذ _____ کیمیکل سے بنا ہے۔
    • A. None of these
    • B. Copper chloride
    • C. Cobalt chloride
    • D. Sodium chloride

    Q2: Which gives blue color in borax bead test? a. Copper b. Cobalt c. Chromium d. None of these

    • A. Copper
    • B. None of these
    • C. Chromium
    • D. Cobalt

    Q3: The co-ordination number and oxidation state of Cobalt in the given complex Na4[Co(C2O4)3] are respectively?

    • A. 3 and +5
    • B. 3 and +2
    • C. 3 and +4
    • D. 6 and +3
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