Home
Class 12
CHEMISTRY
The orange solid on heating gives a colo...

The orange solid on heating gives a colourless gas and a green solid which can be reduced to metal by aluminium powder. The orange and the green solids are, respectively,

A

`(NH_(4))_(2)Cr_(2)O_(7)andCr_(2)O_(3)`

B

`Na_(2)Cr_(2)O_(7)andCr_(2)O_(3)`

C

`K_(2)Cr_(2)O_(7)andCrO_(3)`

D

`(NH_(4))_(2)CrO_(4)andCrO_(3)`

Text Solution

Verified by Experts

Promotional Banner

Topper's Solved these Questions

  • QUESTION PAPER 2013

    WB JEE PREVIOUS YEAR PAPER|Exercise CATEGORY-II|10 Videos

  • QUESTION PAPER 2013

    WB JEE PREVIOUS YEAR PAPER|Exercise CATEGORY-III|5 Videos

  • QUESTION PAPER 2012

    WB JEE PREVIOUS YEAR PAPER|Exercise Subject: Chemistry|41 Videos

  • QUESTION PAPER 2015

    WB JEE PREVIOUS YEAR PAPER|Exercise CHEMISTRY (CATEGORY III)|5 Videos

Similar Questions

Explore conceptually related problems

Out of crystalline and amorphous solids, which can be cleaved easily ?

When a compound A is heated, it produces a colourless gas and the residue obtained is dissolved in water to form the compound B. The compound C is formed when excess CO_2 is passed through aqueous solution of B. The compound C can be separated out in solid state from its solution. C in its solid state when heated forms the compound A. A is-

A white solid (A) when heated liberates a colourless gas which does not support combustion. The residue is dissolved in water to form (B) which can be used for whitewashing. When excess of CO_2 gas is passed through the solution of (B), it gives a compound {C) which on heating forms (A). Identify (A), (B) and (C). Give the reactions.

Which alkali metal bicarbonate has no existance in the solid state?

State whether True or False: A liquid gives up heat when it freezes into a solid.

When a mixture of K_(2)Cr_(2)O_(7) and NH_(4)Cl is heated , a colourless gas in evloved which is neither combustiible nor a supporter of combusion . However , Mg continued to burn in it. When the gas (A) is reacted with calcium carbide in it . When the gas (A) is reacted with calcium carbide in electric furnace , a solid (B) is obtained . (B) undergoes slow hydrolysis forming an insoluble compound (C) and the solution of the compound (D). (D) truns Nessle's reagent brown. Identify (A) to (D) . Write the reactions involved.

Cr is a solid metal while Hg is a liquid metal - give reasons.