Fill in the right answer

Previous Year Papers

Download Solved Question Papers Free for Offline Practice and view Solutions Online.

Take Zigya Full and Sectional Test Series. Time it out for real assessment and get your results instantly.

Practice and master your preparation for a specific topic or chapter. Check you scores at the end of the test.

221. Time required for the decomposition of 99.9% fraction of first order reaction is __________ to that of its half-life time.

145 Views

222. The half-life of a zero order reaction is equal to________.

136 Views

223. In Ostwald isolation method, the concentration of all the reactant molecules is taken in _______ except one.

395 Views

224. The reaction which is bimolecular but its order is one is called _______ reaction.

111 Views

225. Fast reactions have _______ energy of activation.

117 Views

226. The hydrolysis of ethyl acetate in ________ medium is a _______ order reaction.

134 Views

top

120 Views

228. State whether the following statements are true (T) or false (F):

Molecularity of a reaction is always an integral whole number.

A linear plot of [R] versus time gives slope equal to – k for a zero order reaction.

The concentration of the reactant decreases linearly with time, for a first order reaction.

The half-life of a first order reaction is directly proportional to the rate constant.

The minimum amount of energy which the colliding molecules must possess is known as energy of activation.

150 Views

229. State whether the following statements are true (T) or false (F)

Order of reaction may be fractional number.

All first order reactions are unimolecular.

All radio active distingegrations follow first order reaction.

For a first order reaction, the rate of the reaction doubles as the concentration of the reactant(s) doubles.

Molecularity and order of reaction can be 0, 1,2,3 etc.

115 Views

230. The rate of chemical reaction becomes double for every 10° rise in temperature because of

196 Views