Name the gas that can readily decolourise acidified KMnO4 solution.

(1) CO2           

(2) SO2           

(3) NO2             

(4) P2O5

Subtopic:  d-Block Elements- Properties & Uses | Chemistry of Mn and Cr Compounds |
 69%
From NCERT
NEET - 2017
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A gas that can readily decolorize an acidified KMnO4 solution is:

1. SO2

2. NO2

3. P2O5

4. CO2

Subtopic:  d-Block Elements- Properties & Uses | Chemistry of Mn and Cr Compounds |
 73%
From NCERT
NEET - 2017
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HgCl2 and I2 both, when dissolved in water containing I- ions the pair of species formed is:

1. HgI2, I-

2. HgI42-, I3-

3. Hg2I2, I-

4. HgI2, I3-

Subtopic:  d-Block Elements- Properties & Uses | Chemistry of Mn and Cr Compounds |
 56%
NEET - 2017
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SO2 is passed through an acidified K2Cr2Osolution.
The correct statement among the following regarding the above experiment is:

1. The solution gets decolorized.

2. SO2 gets reduced.

3. Green coloured Cr2(SO4)3 gets formed.

4. The solution turns blue.

Subtopic:  Chemistry of Mn and Cr Compounds |
 55%
From NCERT
NEET - 2016
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