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Guignet's green is known as...

Guignet's green is known as

A

`Cr_(2)O_(3).2H_(2)O`

B

`FeO_(3).2H_(2)O`

C

`Cu_(2)O_(3)`

D

`FeCO_(3).Cr_(2)O_(3)`

Text Solution

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The correct Answer is:
A
`Cr_(2)O_(3).2H_(2)O` is known as Guignet's green.
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ERRORLESS -D & P-BLOCK ELEMENTS-Ordinary Thinking (Compounds of d & f block elements)
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  2. Which of the following sulphides when heated strongly in air gives the...

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  3. Guignet's green is known as

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  4. Vanadium (III) oxide is a strong

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  5. When excess ammonnia is added to CuSO(4) solution the deep blue comple...

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  6. The following is known as ''Bordeaux mixture''

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  7. A transition metal A has 'spin-only' magnetic moment value of 1.8 Bm. ...

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  8. The titanium (atomic number 22) compound that does not exist is

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  9. Ammonia is a Lewis base. It forms complexes with cations. Which one of...

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  10. In the laboratory, manganese (II) salt is oxidized to pemanganate ion ...

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  11. An alloy which does not contain copper is

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  12. Which silver halide is used in medicine

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  13. Which can be reduced to the metal by heating it in a stream of hydroge...

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  14. Oxygen gas can be prepared from solid KMnO4 by

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  15. Soil containing both Al and Fe is called

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  16. The form of iron having the highest carbon content is

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  17. Which of the following is more soluble in ammonia ?

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  18. Pure conc. HNO(3) makes iron passive as the surface is covered with pr...

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  19. Which one of the following reacts with concentrated sulphuric acid

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  20. AgCl dissolved in excess of NH(3), KCN and Na(2)S(2)O(3) solutions the...

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