If the equilibrium constant for 

• K^1/2

• K/2

• K 

• K 

An aqueous solution of which of the following compounds is the best conductor of electric current?

• Acetic acid C₂H₄O₂

• Hydrochloric acid, HCl

• Ammonia, NH₃

• Ammonia, NH₃

What is the mole fraction of the solute in a 1.00 m aqueous solution? 

• 0.177

• 1.770

• 0.0354

• 0.0354

The number of water molecules is maximum in 

• 18 molecules of water

• 1.8 g of water

• 18 g of water

• 18 g of water

In which of the following pairs, both the species are not isostructural?

• SiCl_4.PCl₄⁺

• Diamond, carbide

• NH₃, PH₃

• NH₃, PH₃

16.

On heating which of the following releases CO₂ most easily?

• K₂CO₃

• Na₂CO₃

• MgCO₃

• MgCO₃

Which of the following statement is correct for a nucleophile? 

• Nucleophile is s Lewis acid

• Ammonia is a nucleophile

• Nucleophiles attack low electrons density sites

• Nucleophiles attack low electrons density sites

The number of structural isomers possible from the molecular formula C₃H₉N is 

• 4

• 5

• 2

• 2

Two possible stereo-structures of CH₃CHOH.COOH, which are optically active, are called

• diastereomers

• atropisomers

• enantiomers

• enantiomers

Gadolinium belongs to 4f series. Its atomic number is 64. which of the following is the correct electronic configuration of gadolinium?

• [Xe]4f⁸ 6d²

• [Xe]4f⁹5s¹

• [Xe]4f⁷ 5d¹6s²

• [Xe]4f⁷ 5d¹6s²