In the reaction BCl₃+PH₃→[Cl₃B←PH₃] the lewis base is

The charge present onn one azide ion in columbs is

If a reaction obeys the following equation. K=2.303/t log₁₀a/a-x, the order of the reaction will be

Which of the following does not participate in carbylamine reaction?

The active mass of 5.6 litres of O₂ at STP is

A sample of water contains 11.1 ppm of CaCl₂ and 9.5 ppm of MGCl₂ the hardness of water sample is

For a reversible reaction, if the concentrations of the reactants are doubled, then the equilibrium constant value

9.2 grams of N₂O₄(g) is taken one liter vessel and heated till the following equilibrium is reached N₂O₄ (g)⇔2NO₂(g).At equilibrium 50% of N₂O₄(g) is dissociated.The value of Kc is

The correct trends in the hydrides from Bi to N is

The first organic compound synthesized in the laboratory from an inorganic compound is: