MCQ_SINGLE

Which of the following resonating structures is the most stable?

MCQ_SINGLE

80 mL of an organic compound is mixed with 264 mL of $O_{2}$ and ignited. It gives 224 mL of gaseous mixture at NTP. After passing through KOH, 64 mL of gas remains. The organic compound is:

MCQ_SINGLE

Consider a first order reaction: $A\to \text{products}$ . 3 different solutions are taken rate of reaction : Solution 1: $100mL~10M~'A' - r_{1}$ ; Solution 2: $200mL~10M~'A' - r_{2}$ ; Solution 3: $100mL~10M~'A' + 100ml~\text{water} - r_{3}$ . The correct order of the rates of reactions is :

NUMERICAL

Statement-l: Sucrose is dextrorotatory and upon hydrolysis it becomes laevorotatory . Statement-II: Sucrose on hydrolysis gives glucose and fructose such that the laevo rotation of glucose is more than dextrorotation of fructose .

MCQ_SINGLE

Consider the following statements: (A) Propanal and propanone are functional isomers; (B) Ethoxyethane and methoxypropane are metamers; (C) But-2-ene shows optical isomerism; (D) But-1-ene and but-2-ene are functional isomers; (E) Pentane and 2,2-dimethylpropane are chain isomers. The correct statements are:

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