Of the following complex ions, which is diamagnetic in nature?

• [Ni(CN)₄]^2-

• [CuCl₄]^2-

• [CoF₆]^3-

• [CoF₆]^3-

The complex, [Pt (Py)(NH₃)BrCl] will have how many geometrical isomers?

• 4

• 0

• 2

• 2

Clemmensen reduction of a ketone is carried out in the presence of which of the following?

• Zn -Hg with HCl

• LiAlH₄

• H₂ and Pt as catalyst

• H₂ and Pt as catalyst

Which one of the following is employed as antihistamine?

• Diphenyl hydramine

• Norethindrone

• Omeprazole

• Omeprazole

Of the following which one is classified as polyester polymer?

• Bakelite

• Melamine

• Nylon-66

• Nylon-66

In the following reactions,



the major (A) and (C) are respectively

Which one of the following statements is not true regarding (+) lactose?

• (+) lactose is a  β - glycoside formed by the union of a molecule of D (+) galactose

• (+) lactose is a reducing sugar and does not exhibit mutarotation

• (+) lactose, C₁₂H₂₂O₁₁ contains 8 - OH groups

• (+) lactose, C₁₂H₂₂O₁₁ contains 8 - OH groups

48.

In a set of reactions, m-Bromo benzoic acid g ave a product D. Identify the product D. 

• 
• 
• 
• 

What is the product obtained in the following reaction?

Which one is a nucleophilic substitution reaction among the following?