Hydrolysis of urea is an example of

• homogenous catalysis

• heterogenous catalysis

• biochemical catalysis

• zeolite catalysis

The radius ratio in CsCl is 0.93. The expected lattice structure is

• tetrahedral

• square planar

• octahedral

• body-centred cubic

The vapour pressure of pure liquid A is 0.80 atm. When a non volatile B is added to A its vapour pressure drops to 0.60 atm. The mole fraction of B in the solution is

• 0.125

• 0.25

• 0.5

• 0.75

The velocity of oxidation of oxalic acid by acidified KMnO₄ increases as the reaction progress. It is an example of

• promoters

• catalytic poisons

• autocatalysis

• inhibitors

What flows in the internal circuit of a galvanic cell?

• ions

• electrons

• electricity

• atoms

Osmotic pressure of a solution at a given temperature

• increases with concentration

• decreases with concentration

• remains same

• initially increases and then decreases

Which of the following is not a property of colloidal solution?

• Heterogeneity

• Particle size > 100 nm

• Tyndall effect

• Brownian movement

The hydroxide insoluble in NH₄OH + NH₄Cl is

• Al(OH)₃

• Ca(OH)₃

• Zn(OH)₂

• Mg(OH)₂

59.

Time period of a wave is 5 × 10^-3 s, what is the frequency?

• 5 × 10^-3 s^-1

• 2 × 10² s^-1

• 2.3 × 10³ s^-1

• 5 × 10² s^-1

The osmotic pressure (At 27° C) of an aqueous solution (200 mL) containing 6 g of a protein is 2 × 10^-3 atm. If R = 0.080 L atm mol^-1 K^-1 , the molecular weight of protein is

• 7.2 × 10⁵

• 3.6 × 10⁵

• 1.8 × 10⁵

• 1.0 × 10⁵