Is the following compound chiral (optically active)? `cis-[CrCI_2(o x)_2]^3-`

Is the following compound chiral (optically active)? trans-[CrCI_2(o x)_2]^3-

From the following compounds which is optically inactive :

Which of the following compounds show optical isomerism ? (i) Cis-[Co(NH_3)_4Cl_2]^+ (ii) Trans-[Co(en)_2Cl_2]^+ (iii) Cis-[Co(en)_2Cl_2]^+ (iv) [Co(en)_3]^(3+) Choose the correct answer codes given below.

Which of the following amino acids is not optically active?

What are optically active compounds ?

Which of the following compounds belong to same homo-logous series? C_2 H_6 O2 , C2 H2, C2 H6, CH4O2.

Among the following, the number of compounds that can react with PCl_5 to give POCl_3 , is O_2, CO_2, SO_2, H_2O, H_2SO_4, P_4O_10 .

Give the oxidation state, d orbital occupation and coordination number of the central metal ion in the following complexes: cis-[CrCI_2)en)_2]CI