46295 + Interview Questions in Chemistry

1.	Which has more atoms, 200 grams of sodium or 200 grams of iron?(given :- Atomic mass of Na = 23 u, Fe = 56 u)
Answer» Which has more atoms, 200 grams of sodium or 200 grams of iron? (given :- Atomic mass of Na = 23 u, Fe = 56 u)

Discussion

2.	13. f(X) =log(1+x)÷ (1-x), then f(2x)÷ (1+xsquare) is equal to
Answer» 13. f(X) =log(1+x)÷ (1-x), then f(2x)÷ (1+xsquare) is equal to

Discussion

3.	Are laundry soaps suitable for bathing? If not, why?
Answer» Are laundry soaps suitable for bathing? If not, why?

Discussion

4.	How to measure diameter of planets.sun and sun
Answer» How to measure diameter of planets.sun and sun

Discussion

5.	aFe+bH2O→cFe2O3+dH2 is a balanced equation where a, b, c, d are the respective coefficients. Find the value of a+d.
Answer» $aFe + {bH}_{2} O \to {cFe}_{2} O_{3} + {dH}_{2}$ is a balanced equation where $a, b, c, d$ are the respective coefficients. Find the value of $a + d$ .

Discussion

6.	The pair(s) of complexes wherein both exhibit tetrahedral geometry is(are)(Note: py = pyridineGiven: Atomic numbers of Fe, Co, Ni and Cu are 26, 27, 28 and 29, respectively)
Answer» The pair(s) of complexes wherein both exhibit tetrahedral geometry is(are) (Note: py = pyridine Given: Atomic numbers of Fe, Co, Ni and Cu are 26, 27, 28 and 29, respectively)

Discussion

7.	WHAT ARE THE TOTAL NO OF SIGMA AND PI BONDS IN CH3NO2 AND WE HAVE TO CALCULATE THE CO ORDINATE BOND?
Answer» WHAT ARE THE TOTAL NO OF SIGMA AND PI BONDS IN CH3NO2 AND WE HAVE TO CALCULATE THE CO ORDINATE BOND?

Discussion

8.	the energy per unit volume of a dielectric medium is proportional to square of
Answer» the energy per unit volume of a dielectric medium is proportional to square of

Discussion

9.	Calculate the mass of iron which will be converted into its oxide by the action of 18 g of steam on it:
Answer» Calculate the mass of iron which will be converted into its oxide by the action of $18 g$ of steam on it:

Discussion

10.	What is hydrogen spectrum and why would Rutherford's model of Atom would not explain this
Answer» What is hydrogen spectrum and why would Rutherford's model of Atom would not explain this

Discussion

11.	Write the chemical equations involved in the following reactions:(i) Kolbe's reaction(ii) Friedel - Crafts acetylation of anisole
Answer» Write the chemical equations involved in the following reactions: (i) Kolbe's reaction (ii) Friedel - Crafts acetylation of anisole

Discussion

12.	Equal volumes of 0.1M urea and 0.1M glucose are mixed. The mixture will have:
Answer» Equal volumes of 0.1M urea and 0.1M glucose are mixed. The mixture will have:

Discussion

13.	18. What is Darzen reaction
Answer» 18. What is Darzen reaction

Discussion

14.	The equivalent mass of an element is 10 and its chloride has vapour density 91 then valency of element is
Answer» The equivalent mass of an element is 10 and its chloride has vapour density 91 then valency of element is

Discussion

15.	hybrid orbitals used by cl atom in clo2
Answer» hybrid orbitals used by cl atom in clo2

Discussion

16.	Inthe adsorption of acetic acid on activated charcoal, the acetic acid is an [MP PET 1994; MP PMT
Answer» In the adsorption of acetic acid on activated charcoal, the acetic acid is an [MP PET 1994; MP PMT

Discussion

17.	CH3SH has greater acidity than CH3OH,why??even though EN of O is greater than S .will this concept not work in here
Answer» CH3SH has greater acidity than CH3OH,why?? even though EN of O is greater than S . will this concept not work in here

Discussion

18.	Silver benzoate will react with bromine in acetone to form
Answer» Silver benzoate will react with bromine in acetone to form

Discussion

19.	The compound used to remove carbon dioxide from air is:25A) Sodium carbonate(C) Sodium nitrateSB) Sodium hydroxide(D) Sodiun chloride
Answer» The compound used to remove carbon dioxide from air is:25A) Sodium carbonate(C) Sodium nitrateSB) Sodium hydroxide(D) Sodiun chloride

Discussion

20.	31.MnO2 on ignition converts into Mn3O4. A sample of pyrolusite having 75%MnO2 ,20%inert impurities and rest water is ignited in air to a constant weight.what is the percentage of Mn in the ignited sample?
Answer» 31.MnO2 on ignition converts into Mn3O4. A sample of pyrolusite having 75%MnO2 ,20%inert impurities and rest water is ignited in air to a constant weight.what is the percentage of Mn in the ignited sample?

Discussion

21.	The variation of equilibrium constant (K) of a certain reaction with temperature (T) is lnK=3.0+2.0×104T given R=8.3 JK−1mol−1, the values of ΔHo and ΔSo are:
Answer» The variation of equilibrium constant ( $K$ ) of a certain reaction with temperature ( $T$ ) is $ln K = 3.0 + \frac{2.0 \times 10^{4}}{T}$ given $R = 8.3 J K^{- 1} m o l^{- 1}$ , the values of $Δ H^{o}$ and $Δ S^{o}$ are:

Discussion

22.	identify radius of4orbit for lithium atom
Answer» identify radius of4orbit for lithium atom

Discussion

23.	62.A soap bubble is blown slowly at the end of a tube by a pump supplying air at a constant rate. Draw a graph to represent the variation between the excess pressure inside the bubble with time.
Answer» 62.A soap bubble is blown slowly at the end of a tube by a pump supplying air at a constant rate. Draw a graph to represent the variation between the excess pressure inside the bubble with time.

Discussion

24.	Grams of cobalt metal that will be deposited when a solution of cobalt(II) chloride is electrolyzed with a current of 10 amperes for 109 minutes: (1 Faraday=96,500 C; Atomic mass of Co=59 u)
Answer» Grams of cobalt metal that will be deposited when a solution of $c o b a l t (I I) c h l o r i d e$ is electrolyzed with a current of $10 a m p e r e s$ for $109 m i n u t e s$ : ( $1 F a r a d a y = 96, 500 C$ ; Atomic mass of $C o = 59 u$ )

Discussion

25.	Assertion: Greater is the critical temperature, more difficult is to liquefy the gas. Reason: Stronger are the intermolecular forces lowerwould be the critical temperature of that gas.
Answer» Assertion: Greater is the critical temperature, more difficult is to liquefy the gas. Reason: Stronger are the intermolecular forces lowerwould be the critical temperature of that gas.

Discussion

26.	Which one of the elements with the following outer orbital configurations may exhibit the largest number of oxidation states? [CBSE AIPMT 2009]
Answer» Which one of the elements with the following outer orbital configurations may exhibit the largest number of oxidation states? [CBSE AIPMT 2009]

Discussion

27.	Why electron first go in 4s orbital.why electron not go directly in 3d orbital.
Answer» Why electron first go in 4s orbital.why electron not go directly in 3d orbital.

Discussion

28.	Cl2 gas is obtained by various reactions but not by:
Answer» $C l_{2}$ gas is obtained by various reactions but not by:

Discussion

29.	Compare dipole among CH3F CH2Cl2 CHCl3 CH2F2
Answer» Compare dipole among CH3F CH2Cl2 CHCl3 CH2F2

Discussion

30.	1. The centre of mass of a system of two particles ofmasses mi and m2 is at a distance d, from mi and at a158R)distance d2 from mass m such thatd4m14m2(2)m2d2(1) d2m1m2(4) dem14M1+m2M1+ m2(3)d2d 2 ka have nosition1f naoon
Answer» 1. The centre of mass of a system of two particles ofmasses mi and m2 is at a distance d, from mi and at a158R)distance d2 from mass m such thatd4m14m2(2)m2d2(1) d2m1m2(4) dem14M1+m2M1+ m2(3)d2d 2 ka have nosition1f naoon

Discussion

31.	ntOH-CYCLOHEXYL-CH(OH)-Ph react withn nt(A) MnO2n nt(B) Zn/Hg,CONC.HCl to form Pn ntP isn
Answer» ntOH-CYCLOHEXYL-CH(OH)-Ph react withn nt(A) MnO2n nt(B) Zn/Hg,CONC.HCl to form Pn ntP isn

Discussion

32.	if derivative tends to infinity then is the function differentiable?
Answer» if derivative tends to infinity then is the function differentiable?

Discussion

33.	The total number of possible isomer for the complex compound [Cu(NH3)4] [PtCl4]
Answer» The total number of possible isomer for the complex compound [Cu(NH3)4] [PtCl4]

Discussion

34.	5 moles of Na2S2O3 losses 10 moles of the electron. What will be the oxidation number of sulphur?
Answer» 5 moles of Na2S2O3 losses 10 moles of the electron. What will be the oxidation number of sulphur?

Discussion

35.	Expalain briefly the identification of compounds showing geometric isomerism.
Answer» Expalain briefly the identification of compounds showing geometric isomerism.

Discussion

36.	A proton moving with constant velocity passes through a region without any change in its velocity. If E and B denote electric and magnetic field respectively, this region must not have
Answer» A proton moving with constant velocity passes through a region without any change in its velocity. If E and B denote electric and magnetic field respectively, this region must not have

Discussion

37.	the half life of a radioactive substance is 30min the time taken btw 40% decay and 85% decay of the same radioactive substance is
Answer» the half life of a radioactive substance is 30min the time taken btw 40% decay and 85% decay of the same radioactive substance is

Discussion

38.	A solid is made up of two elements X and Y. Atoms X are in FCC arrangement while atoms Y occupy alternate tetrahedral voids. The formula of the compound is
Answer» A solid is made up of two elements X and Y. Atoms X are in FCC arrangement while atoms Y occupy alternate tetrahedral voids. The formula of the compound is

Discussion

39.	In NO−3 ion, the number of bond pairs and lone pairs of electrons on N atom are
Answer» In $N O_{3}^{-}$ ion, the number of bond pairs and lone pairs of electrons on N atom are

Discussion

40.	Discuss the principle and method of softening of hard water by synthetic ion-exchange resins.
Answer» Discuss the principle and method of softening of hard water by synthetic ion-exchange resins.

Discussion

41.	25.The c –c and si– c inter atomic distances are 154 pm and 188 pm the atomic radius of si is
Answer» 25.The c –c and si– c inter atomic distances are 154 pm and 188 pm the atomic radius of si is

Discussion

42.	For the reaction, Mx++MnO−4→MO−3+Mn2+ If one mole of MnO−4 oxidises 1.67 moles of Mx+ to oxidation state where its magnet moment is 1.73. Find x. ___
Answer» For the reaction, $M^{x +} + M n O_{4}^{-} \to M O_{3}^{-} + M n^{2 +}$ If one mole of $M n O_{4}^{-}$ oxidises 1.67 moles of $M^{x +}$ to oxidation state where its magnet moment is 1.73. Find x. ___

Discussion

43.	The major product of the reaction is :
Answer» The major product of the reaction is :

43.

The major product of the reaction is :

Answer»

The major product of the reaction is :

Discussion

44.	Identify a molecule which is paramagnetic in nature.
Answer» Identify a molecule which is paramagnetic in nature.

Discussion

45.	5 litres of a solution in m3 is:
Answer» 5 litres of a solution in m3 is:

Discussion

46.	Phenyl magnesium bromide reacting with t-butyl alcohol gives:
Answer» Phenyl magnesium bromide reacting with t-butyl alcohol gives:

Discussion

47.	how many carbon atoms r present in third homo\log ue of methyl ether?
Answer» how many carbon atoms r present in third homo\log ue of methyl ether?

Discussion

48.	7. Dieldrin, an insecticide, contains C, H, CI and O. Combustion of 29.72 mg of dieldrin have 41.21 mg CO2 and 5.63 mg of H2O. In a separate analyanalysis 25.31 mg of dieldrin was converted into 57.13 mg AgCI. What is empirical formula of dieldrin?
Answer» 7. Dieldrin, an insecticide, contains C, H, CI and O. Combustion of 29.72 mg of dieldrin have 41.21 mg CO2 and 5.63 mg of H2O. In a separate analyanalysis 25.31 mg of dieldrin was converted into 57.13 mg AgCI. What is empirical formula of dieldrin?

Discussion

49.	19. N2+3H2 - 2NH3 Rate of production of NH3 is 0.001kg/HR then rate of disappearance of H2 will be:-
Answer» 19. N2+3H2 - 2NH3 Rate of production of NH3 is 0.001kg/HR then rate of disappearance of H2 will be:-

Discussion

50.	Which of the following ions is the largest in size?
Answer» Which of the following ions is the largest in size?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Which has more atoms, 200 grams of sodium or 200 grams of iron?(given :- Atomic mass of Na = 23 u, Fe = 56 u)

13. f(X) =log(1+x)÷ (1-x), then f(2x)÷ (1+xsquare) is equal to

Are laundry soaps suitable for bathing? If not, why?

How to measure diameter of planets.sun and sun

aFe+bH2O→cFe2O3+dH2 is a balanced equation where a, b, c, d are the respective coefficients. Find the value of a+d.

The pair(s) of complexes wherein both exhibit tetrahedral geometry is(are)(Note: py = pyridineGiven: Atomic numbers of Fe, Co, Ni and Cu are 26, 27, 28 and 29, respectively)

WHAT ARE THE TOTAL NO OF SIGMA AND PI BONDS IN CH3NO2 AND WE HAVE TO CALCULATE THE CO ORDINATE BOND?

the energy per unit volume of a dielectric medium is proportional to square of

Calculate the mass of iron which will be converted into its oxide by the action of 18 g of steam on it:

What is hydrogen spectrum and why would Rutherford's model of Atom would not explain this

Write the chemical equations involved in the following reactions:(i) Kolbe's reaction(ii) Friedel - Crafts acetylation of anisole

Equal volumes of 0.1M urea and 0.1M glucose are mixed. The mixture will have:

18. What is Darzen reaction

The equivalent mass of an element is 10 and its chloride has vapour density 91 then valency of element is

hybrid orbitals used by cl atom in clo2

Inthe adsorption of acetic acid on activated charcoal, the acetic acid is an [MP PET 1994; MP PMT

CH3SH has greater acidity than CH3OH,why??even though EN of O is greater than S .will this concept not work in here

Silver benzoate will react with bromine in acetone to form

The compound used to remove carbon dioxide from air is:25A) Sodium carbonate(C) Sodium nitrateSB) Sodium hydroxide(D) Sodiun chloride

31.MnO2 on ignition converts into Mn3O4. A sample of pyrolusite having 75%MnO2 ,20%inert impurities and rest water is ignited in air to a constant weight.what is the percentage of Mn in the ignited sample?

The variation of equilibrium constant (K) of a certain reaction with temperature (T) is lnK=3.0+2.0×104T given R=8.3 JK−1mol−1, the values of ΔHo and ΔSo are:

identify radius of4orbit for lithium atom

62.A soap bubble is blown slowly at the end of a tube by a pump supplying air at a constant rate. Draw a graph to represent the variation between the excess pressure inside the bubble with time.

Grams of cobalt metal that will be deposited when a solution of cobalt(II) chloride is electrolyzed with a current of 10 amperes for 109 minutes: (1 Faraday=96,500 C; Atomic mass of Co=59 u)

Assertion: Greater is the critical temperature, more difficult is to liquefy the gas. Reason: Stronger are the intermolecular forces lowerwould be the critical temperature of that gas.

Which one of the elements with the following outer orbital configurations may exhibit the largest number of oxidation states? [CBSE AIPMT 2009]

Why electron first go in 4s orbital.why electron not go directly in 3d orbital.

Cl2 gas is obtained by various reactions but not by:

Compare dipole among CH3F CH2Cl2 CHCl3 CH2F2

1. The centre of mass of a system of two particles ofmasses mi and m2 is at a distance d, from mi and at a158R)distance d2 from mass m such thatd4m14m2(2)m2d2(1) d2m1m2(4) dem14M1+m2M1+ m2(3)d2d 2 ka have nosition1f naoon

ntOH-CYCLOHEXYL-CH(OH)-Ph react withn nt(A) MnO2n nt(B) Zn/Hg,CONC.HCl to form Pn ntP isn

if derivative tends to infinity then is the function differentiable?

The total number of possible isomer for the complex compound [Cu(NH3)4] [PtCl4]

5 moles of Na2S2O3 losses 10 moles of the electron. What will be the oxidation number of sulphur?

Expalain briefly the identification of compounds showing geometric isomerism.

A proton moving with constant velocity passes through a region without any change in its velocity. If E and B denote electric and magnetic field respectively, this region must not have

the half life of a radioactive substance is 30min the time taken btw 40% decay and 85% decay of the same radioactive substance is

A solid is made up of two elements X and Y. Atoms X are in FCC arrangement while atoms Y occupy alternate tetrahedral voids. The formula of the compound is

In NO−3 ion, the number of bond pairs and lone pairs of electrons on N atom are

Discuss the principle and method of softening of hard water by synthetic ion-exchange resins.

25.The c –c and si– c inter atomic distances are 154 pm and 188 pm the atomic radius of si is

For the reaction, Mx++MnO−4→MO−3+Mn2+ If one mole of MnO−4 oxidises 1.67 moles of Mx+ to oxidation state where its magnet moment is 1.73. Find x. ___

The major product of the reaction is :

Identify a molecule which is paramagnetic in nature.

5 litres of a solution in m3 is:

Phenyl magnesium bromide reacting with t-butyl alcohol gives:

how many carbon atoms r present in third homo\log ue of methyl ether?

7. Dieldrin, an insecticide, contains C, H, CI and O. Combustion of 29.72 mg of dieldrin have 41.21 mg CO2 and 5.63 mg of H2O. In a separate analyanalysis 25.31 mg of dieldrin was converted into 57.13 mg AgCI. What is empirical formula of dieldrin?

19. N2+3H2 - 2NH3 Rate of production of NH3 is 0.001kg/HR then rate of disappearance of H2 will be:-

Which of the following ions is the largest in size?