9th Class Chemistry Chapter Wise Online MCQ Test With Answers PDF English Medium

Chemistry 9th Class English Medium Online Test

Sr. #	Questions	Answers Choice
1	How much heat absorbed when NH3decomposed into N2 and H2?	90.4 kJ/mol 92.4 kJ/mol 94.2 kJ/mol 95.2 kJ/mol
2	Formation of ammonia from Nitrogen and hydrogen is an.	Exothermic reaction Endothermic reaction Both a and b No heat change
3	Industrialy, ammonia is produced by which process.	Halogenation Solvay process Haber Process Hydrogenation
4	At what temperature , rate of ammonia formation and decomposition is the highest.	200 <sup>o</sup>C 300<sup> o</sup>C 400 <sup>o</sup>C 500 <sup>o</sup>C
5	Concentratin of reactants and product at equilibrium remains unchanged if	Concentration of any reactant or product is not changed Temperaure of the reation is not changed Pressure or volume of the system is not changed All of the above are observed
6	When the rate of the forward reaction takes place at the rate of reverse reaction the composition of the reaction mixgure remains consant. It is called.	Chemical Equilibrium Static equilirbirum Both a and b None of the above
7	When system is at quilibrium state.	The rate of the forward and reverse rections become equal The concentrationof reatants and product becoes equal The oposing reactions stop The rate of the reverse reactio becomes very low
8	Whcih is true about the equilibrium state?	The forard reaction stops Both forward and reverse reactions stop Both foward and reverse reactions continue at the same rate The reverse reaction stops
9	Which of the following does not happpen, when a system is at equilibrium state.	Reaction continues to occur in both the directions Concentration of reactants and products stop changig Forward and reverse reactions stop Forward and reverse rates become equal
10	The colour of hydrated cobalt(II) chloride solid is	White Black Blue Pink
11	The colour of anhydrous cobalt(II) cholride solid	White Black Pink Blue
12	The colour of hydrated copper (II) sulphate solid is.	Black Pink White Blue

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