Identify A to D

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.

When a chromite ore (A) is fused with sodium carbonate in free excess of air and the product is dissolved in water, yellow solution of a compound (B) is obtained. After treatment of this yellow solution with sulphuric acid, compound (C ) can be crystallised from the solution. When compound (C ) is treated with KCl, orange crystals of compound (D ) crystallise out. Identify (A) to (D) and also explain the reactions.

Identify A, B, D, E, F, G in the following reactions:

Identify A, B, D, E, F, G in the following reactions: CH_3COCH_3+SeO_(2_3)overset(CH_3COOH)(rarr)E (organic compound)

C_2H_2overset(Hg^(2+))underset(dil.H_2SO_4)toAoverset(H_2)underset(Ni)toBoverset(Cl_2)underset(NaOH)toC+D Identify A, B C and D.

Identify A , B , C and D . A overset ("conc. " H_(2)SO_(4))underset("conc " HNO_(3))(to) B overset(Sn)underset(HCl)(to) C overset(NaNO_(2) , HCl)underset(0-5^(@) C)(to) D overset(H_(3) PO_(2))(to) A

Identify A , B , C and D : CHB_(2) = CH_(2) overset(Br_(2))(to) A overset(EtOH)underset(KOH)(to) B overset(20% H_(2) SO_(4))underset(1% Hg^(2+) , 80^(@) C)(to) C overset(Zn//Hg)underset(" conc. " HCl)(to) D

Identify C and D.

Identify A, B, C & D.

Identify A, B, C and D in the following reactiolns: