In the above reaction product B is :

Choose the correct option for the following reactions.

Identify the major products A and B for the below given reaction sequence.

Compound I is heated with Conc. HI to give a hydroxy compound A which is further heated with Zn dust to give compound B. Identify A and B.

A compound 'X' is acidic and it is soluble in NaOH solution, but insoluble in NaHCO3 solution. Compound 'X' also gives violet colour with neutral FeCl3 solution. The compound 'X' is :

When ethanol is heated with conc. $${\mathrm{H}}_2{\mathrm{SO}}_4$$, a gas is produced. The compound formed, when this gas is treated with cold dilute aqueous solution of Baeyer's reagent, is

The formula of the purple colour formed in Laissaigne's test for sulphur using sodium nitroprusside is :

Given below are two statements : Statement I : In 'Lassaigne's Test', when both nitrogen and sulphur are present in an organic compound, sodium thiocyanate is formed. Statement II : If both nitrogen and sulphur are present in an organic compound, then the excess of sodium used in sodium fusion will decompose the sodium thiocyanate formed to give NaCN and Na2S. In the light of the above statements, choose the most appropriate answer from the options given below :

The reagent neutral ferric chloride is used to detect the presence of ______________

In base vs. acid titration, at the end point methyl orange is present as

Which one of the following is an example of disproportionation reaction ?

Which of the given reactions is not an example of disproportionation reaction?

Given below are two statements: one is labelled as Assertion $$\mathbf{A}$$ and the other is labelled as Reason $$\mathbf{R}$$. Assertion A: Phenolphthalein is a $$\mathrm{pH}$$ dependent indicator, remains colourless in acidic solution and gives pink colour in basic medium. Reason R: Phenolphthalein is a weak acid. It doesn't dissociate in basic medium. In the light of the above statements, choose the most appropriate answer from the options given below.

A compound 'X' is a weak acid and it exhibits colour change at pH close to the equivalence point during neutralization of NaOH with $${\mathrm{CH}}_3\mathrm{COOH}$$. Compound 'X' exists in ionized form in basic medium. The compound 'X' is

Match List-I with List-II. .tg {border-collapse:collapse;border-spacing:0;} .tg td{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; overflow:hidden;padding:10px 5px;word-break:normal;} .tg th{border-color:black;border-style:solid;border-width:1px;font-family:Arial, sans-serif;font-size:14px; font-weight:normal;overflow:hidden;padding:10px 5px;word-break:normal;} .tg .tg-baqh{text-align:center;vertical-align:top} .tg .tg-0lax{text-align:left;vertical-align:top} List-I (Metal) List-II (Application) (A) Cs (I) High temperature thermometer (B) Ga (II) Water repellent sprays (C) B (III) Photoelectric cells (D) Si (IV) Bullet proof vest Choose the most appropriate answer from the options given below :

The oxoacid of phosphorus that is easily obtained from a reaction of alkali and white phosphorus and has two P-H bonds, is :

Aqueous solution of which of the following boron compounds will be strongly basic in nature?

Sulphur dioxide is one of the components of polluted air. SO2 is also a major contributor to acid rain. The correct and complete reaction to represent acid rain caused by SO2 is :

Among the given oxides of nitrogen ; N2O, N2O3, N2O4 and N2O5, the number of compound/(s) having N - N bond is :

Which of the following oxoacids of sulphur contains "S" in two different oxidation states?