Chemistry 10th Class English Medium Unit 9 Online Test With Answers

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Chemistry 10th Class English Medium Unit 9 Online Test

Sr. # Questions Answers Choice
1 Which gas is used to prepare ammonia? N<sub>2</sub> O<sub>2</sub> Cl<sub>2</sub> S
2 The % age of nitrogen and oxygen in our atmosphere is: 80 90 95 99
3 Guldberg and waage put forward law of mass action in: 1860 1869 1870 1879
4 When the reaction causes to produced it is called. Chemical equlibrium state Static equilibrium Dynamic equilibriiun All
5 When the rate of a the forward reaction takes place at the rate of reverse reaction the composition of the reaction mixture remains constant it is called. Chemical equilibrium Dynamic equilibrium Static equilibrium All
6 The color of hydrogen Iodide is: Colourless Black Red Pink
7 The color of Iodine is: Purple Black Red Pink
8 The reaction in which the products can recombine to form reactants are called. Reversible reaction Irreversible reaction Decomposition Addition
9 The reaction in which the products do not recombine to form reactants are called. Inversible reactions Reversible reaction Decomposition Addition
10 In irreversible reaction, dynamic equilibrium: Never establishes Establishes before the completion of reaction Establishes after the completion of reaction Establishes readily
11 The value of equilibrium constant (Kc) depends only on: temperature Pressure concentration density
12 When the number of moles of both sides are equal in a reaction then the unit of Kc will be: no unit mol-2 dm6 mol dm3 mo-2 dn
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