Chemistry Test ...

The reaction between phosphorus (P₄ ) and hydrogen (H₂ ) can result in the formation of phosphine (PH₃ ) as shown :

\(\mathrm{P}_{4}(s)+6 H_{2}(g) 4 P H_{3}(g)\)

The graph shows the change in concentration of hydrogen for this reaction in which the system was disturbed after four hours.

Which of the following could explain the change in hydrogen concentration at time = 4 hours

When aniline is treated with fuming sulphuric acid followed by heating at temperature 475 K it gives :

The structure of H₂O₂ is :

0.765 g acid gives 0.535g of CO₂ and 0.138 g of H₂O. What will be the ratio of percentage of carbon and hydrogen ?

Ethanol and methanol are miscible in water due to:

Treatment of cyclopentanone with methyl lithium gives which of the following species?

\(C_{2} H_{5} O H \stackrel{C u / 300^{\circ} C}{\longrightarrow} X\)

In the above reaction, the molecular

formula of \(X\) is:

Which of the following ether is called phenetole?

Which of the following given condensation with hydroxyl amine but does not undergo self condensation?

An alcohol with D.U =1 exists having a 2° hydroxy group with the molecular formula of C₃H₆O is: