Class 11th

Statement-I: Potassium hydrogen phthalate is primary standard for NaOH solution.

Statement-II: Phenolphthalein is used to detect completion of titration.

(1) Both statement-l and statement-II are correct

(2) Statement-1 is correct and statement-II is incorrect

(3) Statement-l is incorrect and statement-II is correct

(4) Both statement-I and statement-II are incorrect

Select the incorrect statement among the following

Which among the following is not a state function?

A gas at 300 K and 10 bar has molar volume 10% more than that for an ideal gas under the same conditions. The correct option about the gas and its compressibility factor (Z) is

The number of moles of K₂Cr₂O₇ that will be needed to react with one mole of nitrite ion in acidic solution is

The energies E₁ and E₂ of two radiations are 100 kJ and 200 kJ respectively. The relation between their frequencies i.e. n₁ and n₂ will be

We have a mixture of gases having 2 moles of monoatomic $\left(C_{v,m}=\frac{3R}{2}\right)$  gas and 6 moles of diatomic gas $\left(C_{v,m}=\frac{5R}{2}\right)$ . Find out molar heat capacity (C_nm) of the mixture.

The number of radial nodes and angular nodes in 3p orbital respectively are

If 65.5 g of a metal chloride contains 35.5 g chlorine, then equivalent mass of metal is

Mass of moon is $\frac{1}{81}$  times the mass of a planet and radius is $\frac{1}{9}$  times the radius of the planet. The ratio of escape speed from planet to escape speed from moon is ________.