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(I) FeCr2 O4 + NaOH + air to (A) + Fe2O...

(I) ` FeCr_2 O_4 + NaOH + air to (A) + Fe_2O_3`
(II) `(A) + (B) to NaCr_2O_7`
(III) ` Na_2Cr_2O_7 + X overset(Delta)(to) Cr_2O_3 `
(IV) ` Cr_2O_3 + Y overset(Delta ) (to) Cr`
(X) and (Y) are :

A

C and Al

B

Al and C

C

C in both

D

Al in both

Text Solution

Verified by Experts

The correct Answer is:
A
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(I) FeCr_2 O_4 + NaOH + air to (A) + Fe_2O_3 (II) (A) + (B) to NaCr_2O_7 (III) Na_2Cr_2O_7 + X overset(Delta)(to) Cr_2O_3 (IV) Cr_2O_3 + Y overset(Delta ) (to) Cr Compounds (A) and (B) are

(I) FeCr_2 O_4 + NaOH + air to (A) + Fe_2O_3 (II) (A) + (B) to NaCr_2O_7 (III) Na_2Cr_2O_7 + X overset(Delta)(to) Cr_2O_3 (IV) Cr_2O_3 + Y overset(Delta ) (to) Cr Na_2CrO_4 and Fe_2O_3 are separated by :

FeCr_(2)O_(4)+NaOH+"air" to (A)+Fe_(2)O_(3) (A)+(B) to Na_(2)Cr_(2)O_(7) Na_(2)Cr_(2)O_(7)+X overset(Delta)to Cr_(2)O_(3) Cr_(2)O_(3)+Y overset(Delta)to Cr (X) and (Y) are :

FeCr_(2)O_(4)+NaOH+"air" to (A)+Fe_(2)O_(3) (A)+(B) to Na_(2)Cr_(2)O_(7) Na_(2)Cr_(2)O_(7)+X overset(Delta)to Cr_(2)O_(3) Cr_(2)O_(3)+Y overset(Delta)to Cr Compound (A) and (B) are :

K_2Cr_2O_7 overset(Delta)(to) ? + ? +?

MOTION-METALLURGY-EXERCISE 2 (LEVEL - I)
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  2. (I) FeCr2 O4 + NaOH + air to (A) + Fe2O3 (II) (A) + (B) to NaCr2O7 ...

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  3. (I) FeCr2 O4 + NaOH + air to (A) + Fe2O3 (II) (A) + (B) to NaCr2O7 ...

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  4. (I) FeCr2 O4 + NaOH + air to (A) + Fe2O3 (II) (A) + (B) to NaCr2O7 ...

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  5. (I) FeCr2 O4 + NaOH + air to (A) + Fe2O3 (II) (A) + (B) to NaCr2O7 ...

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