Which one of the following conformation of cyclohexane is chiral?

• Twist boat

• Rigid

• chair

• chair

Which of the following species exhibits the diamagnetic behaviour?

• O₂^2–

• O₂⁺

• O₂

• O₂

The IUPAC name for the complex [Co(NO₂)(NH₃)₅]Cl₂ is

• nitrito-N-pentaamminecobalt (III) chloride

• nitrito-N-pentaamminecobalt (II) chloride

• pentaammine nitrito-N-cobalt (II) chloride

• pentaammine nitrito-N-cobalt (II) chloride

Increasing order of stability among the three main conformations (i.e. Eclipse, Anti, Gauche) of 2-fluoroethanol is

• Eclipse, Gauche, Anti

• Gauche, Eclipse, Anti

• Eclipse, Anti, Gauche

• Eclipse, Anti, Gauche

How many EDTA (ethylenediaminetetraacetic acid) molecules are required to make an octahedral complex with a Ca²⁺ ion?

• 6

• 3

• 1

• 1

The oxidation state of Cr in [Cr(NH₃)₄Cl₂]⁺ is

• +3

• +1

• 0

• 0

The IUPAC name of the coordination compound K₃[Fe(CN)₆] is

• Potassium hexacyanoferrate (II)

• Potassium hexacyanoferrate (III)

• Potassium hexacyanoiron (II)

• Potassium hexacyanoiron (II)

Which of the following compounds shows optical isomerism?

• [Cu(NH₃)₄]⁺²

• [ZnCl₄]^-2

• [Cr(C₂O₄)₃]^-3

• [Cr(C₂O₄)₃]^-3

Which one of the following cyano complexes would exhibit the lowest value of paramagnetic behaviour?

• [Cr(CN)₆]^-3

• [Mn(CN)₆]^-3

• [Fe(CN)₆]^-3

• [Fe(CN)₆]^-3

Which types of isomerism is shown by 2,3-dichlorobutane?

• Diastereo

• Optical

• Geometric

• Geometric