221. Which of the following is a chemical method for determination of reaction rate?
A. Volumetry
B. Spectrophotometry
C. Conductometry
D. pH-Metry
222. The rate of exothermic reaction_________ with an increase in temperature:
A. Increase
B. Decrease
C. First increase than decrease
D. First decrease than increase
223. Activation energy is the:
A. Energy of transition state
B. Energy difference between the transition state and reactants
C. Energy of intermediate
D. Energy difference between two intermediates
224. Which of the following statements is not related to collision theory:
A. Molecules must collide to do a chemical reaction
B. Molecules must possess a minimum amount of energy
C. Molecules must have proper orientation
D. Collision theory is not applicable to gases
225. 1 molar solution of sugar in water is prepared at 25 degrees Celsius. If the solution is heated at 50 degrees Celsius; its molarity:
A. Increases
B. Decreases
C. Becomes double
D. Remains constant
226. 8 g of NaOH is dissolved in water to form 100 ml of solution. The molarity of the solution is:
A. 0.5 M
B. 0.2 M
C. 1 M
D. 2 M
227. The number of moles of KClO3 present in 3.5 L of 0.5 M aqueous solution is:
A. 1 Mol
B. 1.25 Mol
C. 1.75 Mol
D. 1.90 Mol
228. 18% solution of glucose in water is prepared. The molarity of the solution is:
A. 1 M
B. 2.5 M
C. 5 M
D. 10 M
229. Normality of 1M sulfuric acid solution in water is:
A. 1 N
B. 0.5 N
C. 2 N
D. 3 N
230. 5.6 L of H2 and 5.6 L of N2 at STP mixed. If pressure is increased five times, What will be the mole fraction of H2:
A. 0.25
B. 0.5
C. 0.75
D. 1
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