46295 + Interview Questions in Chemistry

1.	In alkaline medium ClO2 oxidises H2O2 to O2 and itself gets reduced to Cl−. How many moles of H2O2 are oxidised by 1 mole of ClO2?
Answer» In alkaline medium $C l O_{2}$ oxidises $H_{2} O_{2}$ to $O_{2}$ and itself gets reduced to $C l^{-}$ . How many moles of $H_{2} O_{2}$ are oxidised by $1$ mole of $C l O_{2}$ ?

Discussion

2.	Which of the following compounds is an amino acid [Manipal MEE 1995]
Answer» Which of the following compounds is an amino acid [Manipal MEE 1995]

2.

Which of the following compounds is an amino acid [Manipal MEE 1995]

Answer»

Which of the following compounds is an amino acid

[Manipal MEE 1995]

Discussion

3.	A monoatomic gas at pressure P having a volume V expands isothermally to a volume 2V and then adiabatically to volume 16 V the final pressure of gas is (take Y=5/3)
Answer» A monoatomic gas at pressure P having a volume V expands isothermally to a volume 2V and then adiabatically to volume 16 V the final pressure of gas is (take Y=5/3)

Discussion

4.	The normality of 4.9% (w/w) H2SO4 Solution having density 1.02 g / ml is ?
Answer» The normality of 4.9% (w/w) H2SO4 Solution having density 1.02 g / ml is ?

Discussion

5.	Calculate the mass of carbon dioxide gas which contains same number of Oxygen atoms as in 4.8g of ozone.
Answer» Calculate the mass of carbon dioxide gas which contains same number of Oxygen atoms as in 4.8g of ozone.

Discussion

6.	What is the Formula of volumetric method ??
Answer» What is the Formula of volumetric method ??

Discussion

7.	1)What is oxidation number ? How to calculate the oxidation number ?2)what is electronegativity and electropositive species ?
Answer» 1)What is oxidation number ? How to calculate the oxidation number ? 2)what is electronegativity and electropositive species ?

Discussion

8.	What is impact parameter.
Answer» What is impact parameter.

Discussion

9.	lowering of vapour pressure due to a solute in 1 molal aqueous solution at 100 C 1) 13.44 torr 2) 14.12torr 3)312 torr 4)352torr
Answer» lowering of vapour pressure due to a solute in 1 molal aqueous solution at 100 C 1) 13.44 torr 2) 14.12torr 3)312 torr 4)352torr

Discussion

10.	Among the following the maximum covalent character is shown by the compound _____
Answer» Among the following the maximum covalent character is shown by the compound _____

Discussion

11.	Which of the following compound(s) cannot be prepared?
Answer» Which of the following compound(s) cannot be prepared?

Discussion

12.	Define Le Chateliers's principle.
Answer» Define Le Chateliers's principle.

Discussion

13.	NaBr, used to produce AgBr for use in photography can itself be prepared as follows: Fe+Br2→FeBr2 FeBr2+Br2→Fe3Br8 (not balanced) Fe3Br8+Na2CO3→NaBr+CO2+Fe3O4 (not balanced) How much Fe, in kg, is consumed to produce 4.12×103 kg NaBr
Answer» $N a B r$ , used to produce $A g B r$ for use in photography can itself be prepared as follows: $F e + B r_{2} \to F e B r_{2}$ $F e B r_{2} + B r_{2} \to F e_{3} B r_{8}$ (not balanced) $F e_{3} B r_{8} + N a_{2} C O_{3} \to N a B r + C O_{2} + F e_{3} O_{4}$ (not balanced) How much $F e$ , in kg, is consumed to produce $4.12 \times 10^{3} k g N a B r$

Discussion

14.	Let a(x,y), b(x,y) and c(x,y) be three statements with variables x and y chosen from some universe . Consider the following statement:(∃x)(∀y)[(a(x,y)∧(b(x,y))∧⇁c(x,y)]Which one of the following is its equivalent ?
Answer» Let a(x,y), b(x,y) and c(x,y) be three statements with variables x and y chosen from some universe . Consider the following statement: $(\exists x) (\forall y) [(a (x, y) \land (b (x, y)) \land ⇁ c (x, y)]$ Which one of the following is its equivalent ?

Discussion

15.	The foul smelling substance produced when a primary amine is heated with CHCl3 and few drops of alcoholic KOH is:
Answer» The foul smelling substance produced when a primary amine is heated with CHCl₃ and few drops of alcoholic KOH is:

Discussion

16.	The value of planks constant is 6.63×10^-34 Js . The velocity of light is 3×10^8 m/s . Which value is closest to the wavelength of quantum of light with frequency 8×10^15 /s
Answer» The value of planks constant is 6.63×10^-34 Js . The velocity of light is 3×10^8 m/s . Which value is closest to the wavelength of quantum of light with frequency 8×10^15 /s

Discussion

17.	Without exception . Sn2 reaction at chiral carbon give1 . Enantiomer of substrate 2. Diastereomeric mixture 2. Product of opposite polarity 4. Only 1 stereoisomer
Answer» Without exception . Sn2 reaction at chiral carbon give 1 . Enantiomer of substrate 2. Diastereomeric mixture 2. Product of opposite polarity 4. Only 1 stereoisomer

Discussion

18.	Volume of 4.4g of CO2 at STP is
Answer» Volume of 4.4g of $C O_{2}$ at STP is

Discussion

19.	What do we mean by significant figures??
Answer» What do we mean by significant figures??

Discussion

20.	37. Which amongst the following carbocations is most stable? 1) (C6H5)CH2+ 2)(CH3)C+
Answer» 37. Which amongst the following carbocations is most stable? 1) (C6H5)CH2+ 2)(CH3)C+

Discussion

21.	Q. The max solubility of Ag2CO3 in 0.02M Na2CO3?{ksp=8x10^-12}
Answer» Q. The max solubility of Ag2CO3 in 0.02M Na2CO3?{ksp=8x10^-12}

Discussion

22.	33. What is the flow of electrons in electrolytic cell and galvanic cell
Answer» 33. What is the flow of electrons in electrolytic cell and galvanic cell

Discussion

23.	A monobasic acid is dissociated in 0.1 M solution. When 200ml of the acid solution is neutralized by 0.1 M NaOH heat evolved is 244 cal. If the heat of neutralization of a strong acid with a strong base is –13.7 kcal, the molar heat of dissociation of the acid is
Answer» A monobasic acid is dissociated in 0.1 M solution. When 200ml of the acid solution is neutralized by 0.1 M NaOH heat evolved is 244 cal. If the heat of neutralization of a strong acid with a strong base is –13.7 kcal, the molar heat of dissociation of the acid is

Discussion

24.	Question 39 Concentration terms such as mass percentage, ppm, mole fraction and molality are independent of temperature, however molarity is a function of temperature. Explain.
Answer» Question 39 Concentration terms such as mass percentage, ppm, mole fraction and molality are independent of temperature, however molarity is a function of temperature. Explain.

Discussion

25.	A weak acid HX has the dissociation constant 1×10−5 M . It forms a salt NaX on reaction with alkali. The percentage hydrolysis of 0.1 M solution of NaX is:
Answer» A weak acid $H X$ has the dissociation constant $1 \times 10^{- 5} M$ . It forms a salt $N a X$ on reaction with alkali. The percentage hydrolysis of $0.1 M$ solution of $N a X$ is:

Discussion

26.	45. What is the maximum number of electrons present in an atom for which n+l=3?
Answer» 45. What is the maximum number of electrons present in an atom for which n+l=3?

Discussion

27.	In Bohr's atomic model, the potential energy of an electron at a position is kr22 (where, k is positive constant) then the quantized energy of the electron in nth orbit is
Answer» In Bohr's atomic model, the potential energy of an electron at a position is $\frac{k r^{2}}{2}$ (where, $k$ is positive constant) then the quantized energy of the electron in $n^{t h}$ orbit is

Discussion

28.	Choose the correct options regarding 'A' and 'C' in the following sequence of reactions:
Answer» Choose the correct options regarding 'A' and 'C' in the following sequence of reactions:

Discussion

29.	What is the hybridization of Cr if CO2 gas is passed into an aqueous chromate (VI) solution?
Answer» What is the hybridization of $C r$ if $C O_{2}$ gas is passed into an aqueous chromate (VI) solution?

Discussion

30.	a new unit of lenght is selected in such a way that the speed of lght in vacuum is unity. calculate the distance between sun and earth in this new unite of time if light from sun takes 500 sec to reach the earth
Answer» a new unit of lenght is selected in such a way that the speed of lght in vacuum is unity. calculate the distance between sun and earth in this new unite of time if light from sun takes 500 sec to reach the earth

Discussion

31.	15.f(x)=e^2x g(x)=log (sqrt x), fog(x)=?
Answer» 15.f(x)=e^2x g(x)=log (sqrt x) , fog(x)=?

Discussion

32.	is it is true that number of waves made by the electron in that orbit is equal to the number of that orbit ?
Answer» is it is true that number of waves made by the electron in that orbit is equal to the number of that orbit ?

Discussion

33.	Ethylidene chloride is a /an ........ (a) vic-dihalide (b) gem-dihalide (c) allylic halide (d) vinylic halide
Answer» Ethylidene chloride is a /an ........ (a) vic-dihalide (b) gem-dihalide (c) allylic halide (d) vinylic halide

33.

Ethylidene chloride is a /an ........ (a) vic-dihalide (b) gem-dihalide (c) allylic halide (d) vinylic halide

Answer»

Ethylidene chloride is a /an ........

(a) vic-dihalide (b) gem-dihalide (c) allylic halide (d) vinylic halide

Discussion

34.	One gram of charcoal adsorbs 100 mL of 0.5 M CH3COOH to form a mono-layer and thereby the molarity of acetic acid is reduced to 0.49 M. The surface area (in m2) of the charcoal adsorbed by each molecule of acetic acid is x×10−19 m2. Surface area of charcoal= 3.0115×102 m2/g. Find the value of x (Given NA=6.023×1023)
Answer» One gram of charcoal adsorbs $100 m L$ of $0.5 M C H_{3} C O O H$ to form a mono-layer and thereby the molarity of acetic acid is reduced to $0.49 M$ . The surface area (in $m^{2}$ ) of the charcoal adsorbed by each molecule of acetic acid is $x \times 10^{- 19} m^{2}$ . Surface area of charcoal= $3.0115 \times 10^{2} m^{2} / g$ . Find the value of $x$ (Given $N_{A} = 6.023 \times 10^{23}$ )

Discussion

35.	Thermally least stable carbonate among the following is
Answer» Thermally least stable carbonate among the following is

Discussion

36.	The dihedral angle between two methyl group in partially eclipsed conformation of n-butane is :
Answer» The dihedral angle between two methyl group in partially eclipsed conformation of n-butane is :

Discussion

37.	if the velocity of an electron , proton and alpha particle is same , which have the maximum wavelength
Answer» if the velocity of an electron , proton and alpha particle is same , which have the maximum wavelength

Discussion

38.	125. Of the following compounds, the oxime of whichshows geometrical isomerism, is(1) Acetone(2) Diethylketone(3) Formaldehyde(4) Benzaldehyde
Answer» 125. Of the following compounds, the oxime of whichshows geometrical isomerism, is(1) Acetone(2) Diethylketone(3) Formaldehyde(4) Benzaldehyde

Discussion

39.	Which of the following functional group(s) shows metamerism?
Answer» Which of the following functional group(s) shows metamerism?

Discussion

40.	Toluene when refluxed with bromine in the presence oflight gives mainly1) obromotoluene(2) m-bromotoluene(3) p-bromotoluene (4) benzyl bromide Explain
Answer» Toluene when refluxed with bromine in the presence oflight gives mainly1) obromotoluene(2) m-bromotoluene(3) p-bromotoluene (4) benzyl bromide Explain

Discussion

41.	Reaction of phenol with dil. HNO3 gives [KCET 1993; RPMT 1997]
Answer» Reaction of phenol with dil. HNO₃ gives [KCET 1993; RPMT 1997]

Discussion

42.	How to observe Equilibrium is dynamic in nature??
Answer» How to observe Equilibrium is dynamic in nature??

Discussion

43.	Zone refining is used for the purification of
Answer» Zone refining is used for the purification of

Discussion

44.	50. A disc of mass M and radius R is rotating about oneof its diameter. The value of radius of gyration for thedisc is(a) R/4(c) R/6(d) None of these (b)R/
Answer» 50. A disc of mass M and radius R is rotating about oneof its diameter. The value of radius of gyration for thedisc is(a) R/4(c) R/6(d) None of these (b)R/

Discussion

45.	27.A radioactive substance decay 10% in 5days . How much percentage decay in 20 days ?
Answer» 27.A radioactive substance decay 10% in 5days . How much percentage decay in 20 days ?

Discussion

46.	Na2B4O7.10H2OHeat−−−→X+NaBO2+H2OX+Cr2O3Heat−−−→YGreen colourX and Y are:
Answer» $N a_{2} B_{4} O_{7} .10 H_{2} O H e a t - -- \to X + N a B O_{2} + H_{2} O$ $X + C r_{2} O_{3} H e a t - -- \to Y G r e e n c o l o u r$ $X$ and $Y$ are:

Discussion

47.	Among the elements Ca, Mg, P and Cl there order of increasing atomic radii is
Answer» Among the elements Ca, Mg, P and Cl there order of increasing atomic radii is

Discussion

48.	Common table salt is hygroscopic due to the presence of
Answer» Common table salt is hygroscopic due to the presence of

Discussion

49.	During the formation of ammonia, the rate of forward reaction will increase if
Answer» During the formation of ammonia, the rate of forward reaction will increase if

Discussion

50.	Which of the following complexes are diamagnetic :
Answer» Which of the following complexes are diamagnetic :

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

In alkaline medium ClO2 oxidises H2O2 to O2 and itself gets reduced to Cl−. How many moles of H2O2 are oxidised by 1 mole of ClO2?

Which of the following compounds is an amino acid [Manipal MEE 1995]

A monoatomic gas at pressure P having a volume V expands isothermally to a volume 2V and then adiabatically to volume 16 V the final pressure of gas is (take Y=5/3)

The normality of 4.9% (w/w) H2SO4 Solution having density 1.02 g / ml is ?

Calculate the mass of carbon dioxide gas which contains same number of Oxygen atoms as in 4.8g of ozone.

What is the Formula of volumetric method ??

1)What is oxidation number ? How to calculate the oxidation number ?2)what is electronegativity and electropositive species ?

What is impact parameter.

lowering of vapour pressure due to a solute in 1 molal aqueous solution at 100 C 1) 13.44 torr 2) 14.12torr 3)312 torr 4)352torr

Among the following the maximum covalent character is shown by the compound _____

Which of the following compound(s) cannot be prepared?

Define Le Chateliers's principle.

NaBr, used to produce AgBr for use in photography can itself be prepared as follows: Fe+Br2→FeBr2 FeBr2+Br2→Fe3Br8 (not balanced) Fe3Br8+Na2CO3→NaBr+CO2+Fe3O4 (not balanced) How much Fe, in kg, is consumed to produce 4.12×103 kg NaBr

Let a(x,y), b(x,y) and c(x,y) be three statements with variables x and y chosen from some universe . Consider the following statement:(∃x)(∀y)[(a(x,y)∧(b(x,y))∧⇁c(x,y)]Which one of the following is its equivalent ?

The foul smelling substance produced when a primary amine is heated with CHCl3 and few drops of alcoholic KOH is:

The value of planks constant is 6.63×10^-34 Js . The velocity of light is 3×10^8 m/s . Which value is closest to the wavelength of quantum of light with frequency 8×10^15 /s

Without exception . Sn2 reaction at chiral carbon give1 . Enantiomer of substrate 2. Diastereomeric mixture 2. Product of opposite polarity 4. Only 1 stereoisomer

Volume of 4.4g of CO2 at STP is

What do we mean by significant figures??

37. Which amongst the following carbocations is most stable? 1) (C6H5)CH2+ 2)(CH3)C+

Q. The max solubility of Ag2CO3 in 0.02M Na2CO3?{ksp=8x10^-12}

33. What is the flow of electrons in electrolytic cell and galvanic cell

A monobasic acid is dissociated in 0.1 M solution. When 200ml of the acid solution is neutralized by 0.1 M NaOH heat evolved is 244 cal. If the heat of neutralization of a strong acid with a strong base is –13.7 kcal, the molar heat of dissociation of the acid is

Question 39 Concentration terms such as mass percentage, ppm, mole fraction and molality are independent of temperature, however molarity is a function of temperature. Explain.

A weak acid HX has the dissociation constant 1×10−5 M . It forms a salt NaX on reaction with alkali. The percentage hydrolysis of 0.1 M solution of NaX is:

45. What is the maximum number of electrons present in an atom for which n+l=3?

In Bohr's atomic model, the potential energy of an electron at a position is kr22 (where, k is positive constant) then the quantized energy of the electron in nth orbit is

Choose the correct options regarding 'A' and 'C' in the following sequence of reactions:

What is the hybridization of Cr if CO2 gas is passed into an aqueous chromate (VI) solution?

a new unit of lenght is selected in such a way that the speed of lght in vacuum is unity. calculate the distance between sun and earth in this new unite of time if light from sun takes 500 sec to reach the earth

15.f(x)=e^2x g(x)=log (sqrt x), fog(x)=?

is it is true that number of waves made by the electron in that orbit is equal to the number of that orbit ?

Ethylidene chloride is a /an ........ (a) vic-dihalide (b) gem-dihalide (c) allylic halide (d) vinylic halide

Thermally least stable carbonate among the following is

The dihedral angle between two methyl group in partially eclipsed conformation of n-butane is :

if the velocity of an electron , proton and alpha particle is same , which have the maximum wavelength

125. Of the following compounds, the oxime of whichshows geometrical isomerism, is(1) Acetone(2) Diethylketone(3) Formaldehyde(4) Benzaldehyde

Which of the following functional group(s) shows metamerism?

Toluene when refluxed with bromine in the presence oflight gives mainly1) obromotoluene(2) m-bromotoluene(3) p-bromotoluene (4) benzyl bromide Explain

Reaction of phenol with dil. HNO3 gives [KCET 1993; RPMT 1997]

How to observe Equilibrium is dynamic in nature??

Zone refining is used for the purification of

50. A disc of mass M and radius R is rotating about oneof its diameter. The value of radius of gyration for thedisc is(a) R/4(c) R/6(d) None of these (b)R/

27.A radioactive substance decay 10% in 5days . How much percentage decay in 20 days ?

Na2B4O7.10H2OHeat−−−→X+NaBO2+H2OX+Cr2O3Heat−−−→YGreen colourX and Y are:

Among the elements Ca, Mg, P and Cl there order of increasing atomic radii is

Common table salt is hygroscopic due to the presence of

During the formation of ammonia, the rate of forward reaction will increase if

Which of the following complexes are diamagnetic :