Chemistry Test ...

The standard reduction potential for the half-cell reaction, \({Cl}_{2}+2 e^{-} \rightarrow 2 {Cl}^{-}\) will be:

\({Pt}^{2+}+2 {Cl}^{-} \rightarrow {Pt}+{Cl}_{2}, E_{\text {cell }}^{o}=-0.15 {~V}\);

\({Pt}^{2+}+2 e^{-} \rightarrow {Pt}, E^{o}=1.20 {~V}\)

In the reaction \(4 \mathrm{Fe}+3 \mathrm{O}_{2} \rightarrow 4 \mathrm{Fe}^{3+}+6 O^{2-}\) which of the following statements is incorrect?

The physical adsorption of gases on the solid surface is due to:

Which of the following is not a neutral ligand?

Benzene forms Nitrobenzene on reaction with conc. HNO₃/H₂SO₄, in the reaction HNO₃ acts as a:

Electrical conductance through metals is called metallic or electronic conductance and is due to the movement of electrons. The electronic conductance depends on:

An aqueous solution of hydrochloric acid:

Benzene reacts with \(\mathrm{CH}_3 \mathrm{COCl}\) in the presence of anhydrous \(\mathrm{AlCl}_3\) to give:

Consider the following:

The correct order of SN1 reactivity of the given bromides is:

Which of the following compounds give(s) positive test with Tollens' reagent?

A. Carboxylic acid

B. Alcohol

C. Alpha hydroxy ketones

D. Aldehydes

Exactly \(1 {~g}\) of urea dissolved in \(75 {~g}\) of water gives a solution that boils at \(100.114^{\circ} {C}\) at 760 torr. The molecular weight of urea is \(60.1\). The boiling point elevation constant for water is:

In ___________, a reaction product is itself a catalyst for that reaction leading to positive feedback.

Directions: These questions consist of two statements, each printed as Assertion and Reason. While answering these questions, you are required to choose any one of the following four responses.

Assertion : Exposure of ultraviolet rays to humans causes skin cancer, disorder and disrupts the immune system.

Reason : Carbon tetrachloride is released into air it rises to the atmosphere and depletes the ozone layer.

Which substance is not present in nucleic acid?

Rate of the reaction depends on: