Explore topic-wise InterviewSolutions in .

A substance C_(4)H_(10)O yields on oxidation a compound C_(4)H_(8)O which gives an oxime and a positive iodoform test. The original substance on treatment with conc. H_(2)SO_(4) gives C_(4)H_(8) . The structure of the compound is

A substance decomposes according to zero order kinetics . If the rate constant is k and initial concentration is a then half life period is :

A substance C_(4)H_(10)O yield on oxidation C_(4)H_(5)O which gives oxime andpositive iodoform test. The original substance on treatment with conc. H_(2)SO_(4) gives C_(4)H_(8). The structure of compound is

A substance A_(x)B_(y)crystallizes in an f.c.c. lattice in which atoms of A' occupy each corner of the cube and atoms of 'B' occupy the centres of each face of the cube. Identify the correct composition of the substance A_(x) B_(y)

A substance 'A' undergoes a reaction such that its concentration at anytime t (in sec.) can be represented by the equation [A]_(t)^(4) = (1)/(t+1) where 't' is time in sec and [A_(t)] represents molar concentration. Calculate rate of disappearance of 'A' at concentration of 2M.

Asubstance (A) is solubleindil.HCland producesobnoxidessmellwithalcholicpotash andhaloform . Whichtypeof compoundbehavelikethis .

A substance 'A' decomposes in solution following the first order kinetics. Flask I constains 1 L of 1 M solution of A and flask II constains 100 ml of 0.6 M solution. After 8 hr, the conc. Of A in flask 1 becomes 0.25 M. What will be time for conc. of A in flask II to become 0.3 M?

A substance A decomposes by a first order reaction starting initially with [A] = 2.00 m and after 200 min [A] = 0.15 m . For this reaction what is the value of k

A substance 'A' crystallizes in fcc lattice. In a crystalline solid AB, some vacancy is produced by missing of equal number of oppositely charged ions. What is the defect called?

A substance A containing three carbon atoms gives white crystalline precipitate with sodium bisulphite solution. But does not guve red precipitate with Fehling solution. A on treatment with NH_(2)-NH_(2)//KOH will yield

A subatomic particle of mass 10^(-18) mu gis in thermal equilibrium with its surrounding at a temperature of 400K. Then the wavelength of this particle will be

(A): Styrene is more reactive than propylene towards cationic polymerization. (R): The carbocation resulting from styrene is more stable than that resulting from propylene.

A student was given a sample of colourless solution containing three cations and was asked to identify the cations. Student carried out a series of reactions as given below. White precipitate 'A' is not soluble in:

A student was given a sample of colourless solution containing three cations and was asked to identify the cations.Student carried out a series of reactions as given below. Which of the following statements is correct ?

A student was given a sample of colourless solution containing three cations and was asked to identify the cations.Student carried out a series of reactions as given below. White precipitate 'A' is not soluble in:

A student was given a sample of colourless solution containing three cations and was asked to identify the cations.Student carried out a series of reactions as given below. Precipitates 'A','B' and 'C' are respectively :

A student try to prepare p-nitroaniline by nitrating aniline with con. HNO_3-con.H_2SO_4 mixture but he got m-nitroaniline from aniline. Why?

A student states that burning of lime in air is an oxidation process. The reason he gives is that an oxide of the metal is produced on burning. Which one is correct ?

A student prepared a pure sample of 1-chloro-2-(dimethylamino) propanol. After standing for several weeks in a sealed container he opened it and found it has mostly 2-chloro-1-(dimethylamino) propane. Resolve student's dilemma and explain what has happened.

A student performs a titration with different burettes and finds titre values of 25.2 mL, 25.25mL and 25.0mL . The number of significant figures in average litre value is:

A student performs a titration with different burettes and finds titre values of25.2 mL, 25.25 mL and 25.0 mL. What is the number of significant figures in the average titre value?

A student performs a titration with different burettes and find titre values of 25.2 mL, 25.25 mL, and 50.0 mL. The number of significant figures in the average titre value is

A studentmakes a statement in the class by saying energy of a particle will not become zero at 0 kwhich of the following is correct in your opinion ?

A student is seperating CHCl_(3) (b.p.=61^(@)C) from CHCl_(2)CHCl_(2) (b.p.= 146^(@)C) by distillation. She has just begun to collect the first distillate in the receiving flask. At what position in the below apparatus will the temperature be 61^(@)C?

A student heated some sulphur in a spatula and collected the gas 'X' . Which one among the following is correct about 'X' ?

A studentby chance mixed acetone with alcohol. This mixture of acetone and lcohol can be seperated by

A student accidently splashes few drops of conc. H_2SO_4 on his cotton shirt. After a while, the splashed partsblacken and the holes appear. This has happened because sulphuric acid.

A student accidently splashes few drops of conc. H,SO, on his cotton shirt. After a while, the splashed parts blacken and the holes appear. This has happened because sulphuric acid

Astudent accidentlyadded conc. H_(2)SO_(4) to potassium permanganateand itexplodeddue to the formation of a explosivewhich is

(A) : Structure of [Co(NH_(3))_(6)]^(+3) ion is octahedral (R) : The coordination number of the metal ion is 6

A strongly alkaline solution of a monoaminodicarboxylic acid contains how many basic groups ?

A stronger reducing agent is

A strong base can extract an alpha-hydrogen from

A stream of electrons from a heated filament was passed between two charged plates kept at a potntial difference V esu. If e and m are charge and mass of an electron respectively then the value of h//lamda (where lamda is wavelength associated with electron wave) is given by

A stream of dry air was passed through a bulb containing a solution of 7.5 g of a compound dissolved in 75 g of water and then through another bulb containing pure water. The loss of mass in the first bulb was 2.81 g and in the second bulb was 0.054 g. Calculate the molecular mass of the compound.

A straight glass tube has two inlets 'X' and 'Y' at the two ends. The length of the tube is 200 cm. HCl gas through inlet X and NH_(3) gas through inlet Y are allowed to entre the tube at the same time. White fumes first appear at a point P inside the tube. Find the distance of P from X.

A storage battery contains a solution of H_(2)SO_(4) 38% by weight . Van't Hoff factor if the DeltaT_(f) is 29.08(K_(f)="mol"^(-1)kg) can be written as x-0.5.Find x ?

A storage battery contains a solution of H_(2)SO_(4) 38% by weight. At this concentration, van't Hoff factor is 2.50. At what temperatue will the batter contents freeze? (K_(f) for water =1.86" K kg mol"^(-1)).