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Oxidation number of chromium in Na₂Cr₂O₇ is
Options
(a) 2
(b) 4
(c) 3
(d) 6
Correct Answer:
6
Explanation:
Oxidation number of chromium in Na₂Cr₂O₇ is +6. Oxidation number of Na = +1. Oxidation number of O = -2. Therefore 2 + 2x -2 * 7 = 0.⇒ 2x – 12 = 0 , ⇒ x = +6.
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- When 10 g of a non-volatile solute is dissolved in 100 g of benzene ,
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Topics: D and F Block Elements
(91)
Subject: Chemistry
(2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
- Nitrous oxide is known as
- The products formed when diborane is hydrolysed are
- When 10 g of a non-volatile solute is dissolved in 100 g of benzene ,
- Both ethan and methane can be obtained in one step reaction from
- The reaction of an ester RCOOR’ with an alcohol R”OH in the presence of an acid
Topics: D and F Block Elements (91)
Subject: Chemistry (2512)
Important MCQs Based on Medical Entrance Examinations To Improve Your NEET Score
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