Chemistry Test ...

___________ is a quantity that represents the total energy of the system.

Given are some statements about cycloalkanes:

[P]: Baeyer's theory does not apply to four-membered rings.

[Q]: Cyclohexane and cyclodecane rings are not flat but are puckered.

[R]: Chair form of cyclohexane experiences van der Waals strain due to flagpole interactions.

[S]: Boat form of cyclohexane experiences both torsional and van der Waals strain.

Choose the correct combination of statements.

Which of the following methods is used for the destruction of colloids:

Of the following the most acidic is:

The compounds of alkaline earth metals have which one the following magnetic nature?

Which of the following does not undergo additional polymerization?

Direction: The following questions consist of two statements, one labelled as Assertion and the other Reason. Examine both the statements carefully and mark the correct choice according to the instructions given below.

Assertion

\(O_{2}\) is a stronger reducing agent than \(F_{2}\).

Reason

\(F_{2}\) is more electronegative.

The gaseous envelope around the earth is known as the atmosphere. The lowest layer of this is extended up to 10 km from sea level, this layer is:

For preparing a buffer solution of \(pH 6\) by mixing sodium acetate and acetic acid, the ratio of the concentrations of salt and acid should be \((Ka = 10^{-5})\)

Which of the following hydrides is least stable to hydrolysis?