AIEEE Exam

The pair in which both species have the same
magnetic moment (spin only value) is –
(A) [Cr(H2O)6]2+, [CoCl4]2–
(B) [Cr(H2O)6]
2+, [Fe(H2O)6]
2+
(C) [Mn(H2O)6]2+, [Cr(H2O)6]2+
(D) [CoCl4]2–, [Fe(H2O6)]2

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AIEEE Other Question

On addition of 1 ml solution of 10% NaCl to 10
ml of gold sol in the presence of 0.025g of starch
the coagulation is just prevented. The gold
number of starch is–
(A) 0.025 (B) 0.25 (C) 2.5 (D) 25
Williamson's synthesis is an example of –
(A) Nucleophilic addition
(B) Electrophilic addition
(C) Electrophilic substitution
(D) Nucleophilic substitution reaction