11.

Consider the following reaction,


The values of x,y and z in the reaction are respectively

• 5,2 and 16

• 2,5 and 8

• 2,5 and 16

• 2,5 and 16

The gas leaked from a storage tank of the Union Carbide plant in Bhopal tragedy was

• Methyl isocyanate

• Methylamine

• Ammonia

• Ammonia

Which of the following complex species is not expected to exhibit optical isomerism? 

• [Co(en)₃]³⁺

• [Co(en)₂Cl₂]⁺

• [Co(NH₃)₃Cl₃]

• [Co(NH₃)₃Cl₃]

Which one of the following molecules is expected to exhibit diamagnetic behaviour?

• C₂

• O₂

• N₂

• N₂

Given, 


Based on the data given above, strongest oxidising agent will be

• Cl

• Cr³⁺

• Mn²⁺

• Mn²⁺

The molarity of a solution obtained by mixing 750 mL of 0.5 (M) HCl with 250 mL of 2(M) HCl will be

• 0.875 M

• 1.00 M

• 1.75 M

• 1.75 M

The rate of a reaction doubles when its temperature changes from 300K to 310K. Activation energy of such a reaction will be (R = 8.314 JK^–1 mol–1 and log 2 = 0.301)

• 53.6 kJ mol^-1

• 48.6 kJ mol^-1

• 58.5 kJ mol^-1

• 58.5 kJ mol^-1

Which of the following arrangements does not represent the correct order of the property stated against it?

• V²⁺ < Cr²⁺<Mn²⁺<Fe²⁺: paramagnetic behaviour

• Ni²⁺ < Co²⁺ < Fe²⁺ < Mn²⁺ ; Ionic size

• Co³⁺ < Fe³⁺< Cr³⁺ < Sc³⁺ : stability in aqueous solution

• Co³⁺ < Fe³⁺< Cr³⁺ < Sc³⁺ : stability in aqueous solution

Which of the following is the wrong statement?

• ONCl and ONO^- are not isoelectronic

• O₃ molecule is linear

• Ozone is violet-black in solid state

• Ozone is violet-black in solid state

The coagulating power of electrolytes having ions Na⁺, Al³⁺ and Ba²⁺ for arsenic sulphide sol increases in the order:

• Al³⁺<Ba²⁺<Na⁺

• Na⁺<Ba²⁺<Al³⁺

• Ba²⁺< Na²⁺<Al³⁺

• Ba²⁺< Na²⁺<Al³⁺