Borax bead test: compound formed and colour of the bead

1. A.
   Statement I is false but statement II is true.
2. B.
   Statement I is true but Statement II is false.
3. C.
   Both Statement I and Statement II are true.
4. D.
   Both Statement I and Statement II are false.

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1. A.
   $B_{2}O_{3}$
2. B.
   $Co\left( {BO}_{2} \right)_{2}$
3. C.
   ${CoB}_{4}O_{7}$
4. D.
   $Co\left\lbrack B_{4}O_{5}(OH)_{4} \right\rbrack$

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1. A.
   $CuO$
2. B.
   $Cu\left( {BO}_{2} \right)_{2}$
3. C.
   ${Cu}_{3}{\text{ }B}_{2}$
4. D.
   $Cu$

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1. A.
   Both Statement I and Statement II are true
2. B.
   Statement I is true but Statement II is false
3. C.
   Statement I is false but Statement II is true
4. D.
   Both Statement I and Statement II are false

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1. A.
   +2 and +2
2. B.
   +2 and +1
3. C.
   +1 and +2
4. D.
   +1 and +1

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