NEB Question Browser

Define the term pH of a solution. Calculate the hydroxyl ion concentration in mole/litre of a solution whose pH is 4.7. Also determine the weight of NaOH required to produce these ions in one litre of the solution.

Heat of combustion of carbon , sulphur and carbon disulphide are , and , respectively. Calculate the heat of formation of .

Write down the cell notation indicating anode and cathode.

If you are asked to prepare a primary alcohol using Grignard's reagent, what will you start with?

Which one of the following is most basic in nature?

Which of the following compounds gives positive Tollen's test as well as Iodoform test?

Benzene ‘X’ ‘Y’

If the compound ‘Y’ is heated with acid anhydride in the presence of sodium acetate, what will it give?

Which of the following metal ions shows green color in its salt?

What feature of transition metals makes them suitable to act as catalyst?

Standard electrode potentials of four metals P, Q, R and S are , , and , respectively. Which is the correct arrangement in the order of decreasing reactivity?

If solution of acetic acid is ionised, what will be the dissociation constant of acetic acid?

A chemical reaction occurs as follows:

What is the equivalent weight of ?

Which of the following compounds reacts with chlorobenzene to form DDT?

Differentiate between equivalence point and end point.

If the rate of reaction is equal to the rate constant, what will be the order of reaction?

Ether is stored in the bottle containing iron wire.

Identify the value of A, B and C.

Define primary standard solution.

Which chemical indicator is used in the titration of KMnO₄ solution versus oxalic acid solution?

Why is oxalic acid solution warmed after adding dilute H₂SO₄ before titrating with KMnO₄?