A2Z|Exercise Section D - Chapter End Test|30 Videos
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Ammonium dichromate is used in some fire works. The green coloured powder blown in air is
(NH_(4))_(2)Cr_(2)O_(7)( Ammonium dichromate ) is used in fire works. The green coloured powder blown in air is
(NH_(4))_(2)Cr_(2)O_(7) (ammonium dichromate) is used in fire works. The green coloured powder blown in air is:
Which of the following is used to remove the green colour from glass?
When SO_(2) gas is allowed to react with acidified potassium dichromate solution , the yellow colour of the solution changes to green. This is due to the formation of
Which of the following statement (s) is /are correct? (I) In acidic solution dichromate ions are converted to chromate ions . (II) An acidified solution of K_(2)Cr_(2)O_(7) liberates iodine from iodides. (III) Potassium dichromate is used as a titrant for Fe^(2+) ions. (IV) Ammonium dichromate on heating undergo exothermic decomposition to give Cr_(2)O_(3) . Choose the correct option .
Knowledge Check
Ammonium dichromate is used in some fireworks. The green coloured powder blown is
A
`CrO_3`
B
`Cr_2O_3`
C
Cr
D
`CrO (O_2)`
Ammonium dichromate is used in some fire works. The green coloured powder blown in air is
A
`CrO_(3)`
B
`Cr_(2)O_(3)`
C
Cr
D
`CrO(O_(2))`
(NH_(4))_(2)Cr_(2)O_(7)( Ammonium dichromate ) is used in fire works. The green coloured powder blown in air is
A
`Cr_(2)O_(3)`
B
`CrO_(2)`
C
`Cr_(2)O_(4)`
D
`CrO_(3)`
A2Z-THE D AND F BLOCK ELEMENTS-KMnO_4 And K_2Cr_2O_45
