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#5 | Trends of d Block Elements : I
(Chemistry) > The d and f Block Elements

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Related Practice Questions :

The low melting point of manganese in the 1st transition series is due to:

1. strong metallic bond due to d10 configuration

2. weak metallic bond due to d5 configuration

3. weak metallic bond due to d7 configuration

4. none of the above

 71%
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Which of the following solid salt on heating with K2Cr2O7 and Conc. H2SO4 orange,red vapours are evolved which turn aquous NaOH solution yellow?

1. NaBr

2. NaCl

3. NaNO3

4. NaI

 50%
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Fe is made passive by :

1. dil . H2SO4

2. dil. HCl

3. Conc. HNO3

4. Conc. H2SO4

 52%
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Which of the following element does not show the variable oxidation state?

1. Fe

2. Mn

3. Cu

4. Zn

 86%
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Basic oxide amongst the following is:

1. CrO

2. Cr2O3

3. CrO3

4. Cr2O4

 63%
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