46295 + Interview Questions in Chemistry

1.	The potential difference between the terminals A and C is-
Answer» The potential difference between the terminals $A$ and $C$ is-

Discussion

2.	how many oxime are possible when C3H60 is obtained when treated with NH2OH
Answer» how many oxime are possible when C3H60 is obtained when treated with NH2OH

Discussion

3.	The electronic configuration of gadolinium (Atomic number 64) is (a) [Xe]4f35d56s2 (b) [Xe]4f75d26s1 (c) [Xe]4f75d16s2 (d) [Xe]4f85d66s2
Answer» The electronic configuration of gadolinium (Atomic number 64) is (a) $[X e] 4 f^{3} 5 d^{5} 6 s^{2}$ (b) $[X e] 4 f^{7} 5 d^{2} 6 s^{1}$ (c) $[X e] 4 f^{7} 5 d^{1} 6 s^{2}$ (d) $[X e] 4 f^{8} 5 d^{6} 6 s^{2}$

Discussion

4.	Which of the following represents the first law of Faraday[MP PMT 1991]
Answer» Which of the following represents the first law of Faraday [MP PMT 1991]

4.

Which of the following represents the first law of Faraday[MP PMT 1991]

Answer»

Which of the following represents the first law of Faraday

[MP PMT 1991]

Discussion

5.	nt ntt nttt0.5 g of fuming H2SO4oleum is diluted with water. This solution is completely neutralised by 26.7 ml of 0.4 N NaOH. The correct statement is/arentnn ntnnnntntt ntttOptions:nttntttnttttntttttntttttta.ntttttntttttt ntttttttMass of SO3is 0.104 gntttttnttttnttttntttttnttttttb.ntttttntttttt nttttttt% of free SO3= 20.7ntttttnttttnttttntttttnttttttc.ntttttntttttt ntttttttNormality of H2SO4for neutralization is 0.2 Nntttttnttttnttttntttttnttttttd.ntttttntttttt ntttttttWeight of H2SO4is 0.104 gntttttnttttntttnttntnn ntn
Answer» nt ntt nttt0.5 g of fuming H2SO4oleum is diluted with water. This solution is completely neutralised by 26.7 ml of 0.4 N NaOH. The correct statement is/arentnn ntnnnntntt ntttOptions:nttntttnttttntttttntttttta.ntttttntttttt ntttttttMass of SO3is 0.104 gntttttnttttnttttntttttnttttttb.ntttttntttttt nttttttt% of free SO3= 20.7ntttttnttttnttttntttttnttttttc.ntttttntttttt ntttttttNormality of H2SO4for neutralization is 0.2 Nntttttnttttnttttntttttnttttttd.ntttttntttttt ntttttttWeight of H2SO4is 0.104 gntttttnttttntttnttntnn ntn

Discussion

6.	10. In alkaline medium KMnO4 reacts as follows: 2KMnO4 + 2KOH - 2K2MnO4+H2O + O2. therefore it's equivalent mass will be : (1)31.6 (2)52.7(3)79 (4)158
Answer» 10. In alkaline medium KMnO4 reacts as follows: 2KMnO4 + 2KOH - 2K2MnO4+H2O + O2. therefore it's equivalent mass will be : (1)31.6 (2)52.7(3)79 (4)158

Discussion

7.	what is the spinel structure?why structure of Fe3O4 structure called inverse spinel structure?
Answer» what is the spinel structure?why structure of Fe3O4 structure called inverse spinel structure?

Discussion

8.	48.What is Rosenmund reaction?
Answer» 48.What is Rosenmund reaction?

Discussion

9.	47. Formula of enthalpy of formation
Answer» 47. Formula of enthalpy of formation

Discussion

10.	34. Total no. Of voids in 0.5 moles of a compound forming hcp structures are?
Answer» 34. Total no. Of voids in 0.5 moles of a compound forming hcp structures are?

Discussion

11.	Calculatethe depression in the freezing point of water when 10 g ofCH3CH2CHClCOOHis added to 250 g of water. Ka= 1.4 × 10−3,Kf = 1.86K kgmol−1.
Answer» Calculate the depression in the freezing point of water when 10 g of CH₃CH₂CHClCOOH is added to 250 g of water. K_a = 1.4 × 10⁻³, K_f= 1.86 K kg mol⁻¹.

11.

Calculatethe depression in the freezing point of water when 10 g ofCH3CH2CHClCOOHis added to 250 g of water. Ka= 1.4 × 10−3,Kf = 1.86K kgmol−1.

Answer»

Calculate
the depression in the freezing point of water when 10 g of
CH₃CH₂CHClCOOH
is added to 250 g of water. K_a
= 1.4 × 10⁻³,
K_f= 1.86

K kg
mol⁻¹.

Discussion

12.	If the ionic radii of K+ and F− are nearly the same (i.e 1.34 ˚A) then the atomic radii of K and F are respectively are
Answer» If the ionic radii of $K^{+}$ and $F^{-}$ are nearly the same (i.e $1.34 ˚ A$ ) then the atomic radii of $K$ and $F$ are respectively are

Discussion

13.

Four students observed the colour and odour of acetic acid and its reaction with sodium hydrogencarbonate. They tabulated their observations as given below. Student Colour of acetic acid Odour of acetic acid Action with sodium hydrogencarbonate A B C D blue colourless light green light brown fruity smell of vinegar odourless rotten eggs gas evolves without bubbles effervescence gas evolves without bubbles effervescence The correct set of observation is that of student:(1) A(2) B(3) C(4) D

Answer» Four students observed the colour and odour of acetic acid and its reaction with sodium hydrogencarbonate. They tabulated their observations as given below.

Student	Colour of acetic acid	Odour of acetic acid	Action with sodium hydrogencarbonate
A B C D	blue colourless light green light brown	fruity smell of vinegar odourless rotten eggs	gas evolves without bubbles effervescence gas evolves without bubbles effervescence

The correct set of observation is that of student:

(1) A

(2) B

(3) C

(4) D

Discussion

14.	A monatomic gas at pressure P, and volume V1 is compressed adiabatically to 1/8th its original volume.What is the final presssure of the gas?
Answer» A monatomic gas at pressure P, and volume V1 is compressed adiabatically to 1/8th its original volume.What is the final presssure of the gas?

Discussion

15.	An element (atomic mass = 100 g/mole) having BCC structure has an edge length of 400 pm. The density of the element is (no. of atoms in BCCZ=2).
Answer» An element (atomic mass = $100 g / m o l e$ ) having $B C C$ structure has an edge length of $400 p m$ . The density of the element is (no. of atoms in $B C C_{Z} = 2$ ).

Discussion

16.	A covered wooden box has the inner dimension as 1.15 m , 0.75 m and 0.35 m and the thickness of wood is 2.5 cm . the volume of the wood will b
Answer» A covered wooden box has the inner dimension as 1.15 m , 0.75 m and 0.35 m and the thickness of wood is 2.5 cm . the volume of the wood will b

Discussion

17.	An HCl molecules has a dipole moment of 3.4×10−30 C-m. Assuming that equal and opposite charges lie on the two atoms to form a dipole, what is the magnitude of this charge? The separation between the two atoms of HCl is 1.0×10−10 m.
Answer» An $HCl$ molecules has a dipole moment of $3.4 \times 10^{- 30} C-m$ . Assuming that equal and opposite charges lie on the two atoms to form a dipole, what is the magnitude of this charge? The separation between the two atoms of $HCl$ is $1.0 \times 10^{- 10} m$ .

Discussion

18.	UV light of wavelength 300 nm and intensity 1 Wm−2 falls on the surface of photo electric metal. If one percent of incident photons, produce photo electrons, then the number of photo electrons emitted from an area of 1.0 cm2 of the surface is nearly
Answer» UV light of wavelength 300 nm and intensity 1 $W m^{- 2}$ falls on the surface of photo electric metal. If one percent of incident photons, produce photo electrons, then the number of photo electrons emitted from an area of 1.0 $c m^{2}$ of the surface is nearly

Discussion

19.	Ozonolysis of 2-methyl butene-2 yields
Answer» Ozonolysis of 2-methyl butene-2 yields

Discussion

20.	Ch3-ch2-ch2-ch=ch-ch3 is an unsymmetrical alkene and what is the major product on its hydrolysis.
Answer» Ch3-ch2-ch2-ch=ch-ch3 is an unsymmetrical alkene and what is the major product on its hydrolysis.

Discussion

21.	What is meaning of 1st,2nd,3rd Coordination Number
Answer» What is meaning of 1st,2nd,3rd Coordination Number

Discussion

22.	Ionic solids conduct electricity in molten state but not in solid state. Explain.
Answer» Ionic solids conduct electricity in molten state but not in solid state. Explain.

Discussion

23.	Ferric thiocyanate is formed in
Answer» Ferric thiocyanate is formed in

Discussion

24.	16. Why nh3 is basic while bih3 is only feebly basic
Answer» 16. Why nh3 is basic while bih3 is only feebly basic

Discussion

25.	The normality of the excess ions (H+/OH−) in a solution obtained by mixing 100 mL of a 0.2 M H2SO4 solution with 100 mL of a 0.2 M NaOH solution is:
Answer» The normality of the excess ions $(H^{+} / O H^{-})$ in a solution obtained by mixing $100 mL$ of a $0.2 M H_{2} S O_{4}$ solution with $100 mL$ of a $0.2 M N a O H$ solution is:

Discussion

26.	zn + fe2+ gives zn2+ + fe. the value of kc for this reaction is 10^23 calculate the standard free energy change
Answer» zn + fe2+ gives zn2+ + fe. the value of kc for this reaction is 10^23 calculate the standard free energy change

Discussion

27.	8. A silicon specimen is made into a p-type semiconductor by doping: on an average, one indium atom v5 107 silicon atoms. If the number density of atoms in the silicon specimen is 5 1028 atm/me thennumber of acceptor atom in Silicon per cubic centimeter will be(1) 2.5 x 1030(3) 1.0 x 1013(2) 2.5 x 1035(4) 1.0 x 1015
Answer» 8. A silicon specimen is made into a p-type semiconductor by doping: on an average, one indium atom v5 107 silicon atoms. If the number density of atoms in the silicon specimen is 5 1028 atm/me thennumber of acceptor atom in Silicon per cubic centimeter will be(1) 2.5 x 1030(3) 1.0 x 1013(2) 2.5 x 1035(4) 1.0 x 1015

Discussion

28.	The shape of which of the following molecules will not be distorted?
Answer» The shape of which of the following molecules will not be distorted?

Discussion

29.	26.Why does shielding and penetration effect have the same order as s>p>d>f? What is the correlation between the two?
Answer» 26.Why does shielding and penetration effect have the same order as s>p>d>f? What is the correlation between the two?

Discussion

30.	Which is the most electropositive substance among the following?
Answer» Which is the most electropositive substance among the following?

Discussion

31.	7. B-is present in FCC lattice and A+ occupied octahedral void. If radius of B- is x . Calculate the maximum size of A+ that can fit octahedral void.
Answer» 7. B-is present in FCC lattice and A+ occupied octahedral void. If radius of B- is x . Calculate the maximum size of A+ that can fit octahedral void.

Discussion

32.	Out of , which is an example of vinylic halide?
Answer» Out of , which is an example of vinylic halide?

Discussion

33.	Work done in vaporisation of one mole of water at 373K and the pressure of 1 atm is approx (for ideal gas) - A)-3100 J B)-3000 J C)3200 J D)3000
Answer» Work done in vaporisation of one mole of water at 373K and the pressure of 1 atm is approx (for ideal gas) - A)-3100 J B)-3000 J C)3200 J D)3000

Discussion

34.	Which of the following is most reactive toward Hydrolysis ?(1) CH3CONH2(2) CH3COCl(3) ethanoic anhydride(4) ethyl ethanoate
Answer» Which of the following is most reactive toward Hydrolysis ? (1) CH3CONH2 (2) CH3COCl (3) ethanoic anhydride (4) ethyl ethanoate

Discussion

35.	Which of the following reaction(s) can be spontaneous?
Answer» Which of the following reaction(s) can be spontaneous?

Discussion

36.	The oxidation state of Cl in Cl2O7 is:
Answer» The oxidation state of $C l$ in $C l_{2} O_{7}$ is:

Discussion

37.	50. how many moles of electrons weigh seven kilogram
Answer» 50. how many moles of electrons weigh seven kilogram

Discussion

38.	In Duma's method for quantitative estimation of nitrogen, 0.5 g of an organic compound gave 100 mL of nitrogen collected at 27^° C temperature and 680 mm of Hg pressure. What is the percentage composition of nitrogen in the sample? \lbrack Given aqueous tension at 27^° C = 20 mm Hg\rbrack
Answer» In Duma's method for quantitative estimation of nitrogen, 0.5 g of an organic compound gave 100 mL of nitrogen collected at 27^° C temperature and 680 mm of Hg pressure. What is the percentage composition of nitrogen in the sample? \lbrack Given aqueous tension at 27^° C = 20 mm Hg\rbrack

Discussion

39.	11. If 100 ml gold solution is completely protected from coagulation by adding one gram gelatin before the addition of 10 ml of 10% NaCl solution the gold number of gelatin is
Answer» 11. If 100 ml gold solution is completely protected from coagulation by adding one gram gelatin before the addition of 10 ml of 10% NaCl solution the gold number of gelatin is

Discussion

40.	When 20 g of naphthoic acid (C11H8O2) is dissolved in 50g of benzene (Kf = 1.72 K kg mol-1), a freezing point depression of 2K is observed. The van't Hoff factor (i) is -
Answer» When 20 g of naphthoic acid (C11H8O2) is dissolved in 50g of benzene (Kf = 1.72 K kg mol-1), a freezing point depression of 2K is observed. The van't Hoff factor (i) is -

Discussion

41.	The equivalent conductance of M/32 solution of a weak monobasic acid is 8.0 mho cm2, and at infinite dilution is 400 mhocm2. The dissociation constant of this acid is:
Answer» The equivalent conductance of M/32 solution of a weak monobasic acid is $8.0 m h o c m^{2}$ , and at infinite dilution is 400 $m h o c m^{2}$ . The dissociation constant of this acid is:

Discussion

42.	In the series Sc (Z = 21) to Zn (Z = 30), the enthalpy of atomization of zinc is the lowest, i.e., 126 kJ mol−1. Why?
Answer» In the series Sc (Z = 21) to Zn (Z = 30), the enthalpy of atomization of zinc is the lowest, i.e., 126 kJ mol⁻¹. Why?

Discussion

43.	why oxoacid of phosphorus name ortho,pyro,hypo,phosphoric and phosphorus acid
Answer» why oxoacid of phosphorus name ortho,pyro,hypo,phosphoric and phosphorus acid

Discussion

44.	Is Intertstitial defect a stichometric defect in non ionic solids??
Answer» Is Intertstitial defect a stichometric defect in non ionic solids??

Discussion

45.	Calculate the oxidation number of Iodine (I) in KI3 ?
Answer» Calculate the oxidation number of Iodine $(I)$ in $K I_{3}$ ?

Discussion

46.	26.2 mole of NaOH mix with 20 mol H2O. Find molality of NaOH??
Answer» 26.2 mole of NaOH mix with 20 mol H2O. Find molality of NaOH??

Discussion

47.	An aqueous solution containing a non-volatile solute boils at 101∘C. What is the freezing point of the same solution?Given(Kf=1.86∘C/m and Kb=0.51∘C/m)
Answer» An aqueous solution containing a non-volatile solute boils at $101^{\circ} C .$ What is the freezing point of the same solution? Given $(K_{f} = {1.86}^{\circ} C / m$ and $K_{b} = {0.51}^{\circ} C / m)$

Discussion

48.	what is ionisation potential?
Answer» what is ionisation potential?

Discussion

49.	Ain't there any trick or pneumonic to learn(remember) the electrochemical series.......
Answer» Ain't there any trick or pneumonic to learn(remember) the electrochemical series.......

Discussion

50.	What is the term given for the arrangement of electrons in the orbitals of an atom?
Answer» What is the term given for the arrangement of electrons in the orbitals of an atom?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

The potential difference between the terminals A and C is-

how many oxime are possible when C3H60 is obtained when treated with NH2OH

The electronic configuration of gadolinium (Atomic number 64) is (a) [Xe]4f35d56s2 (b) [Xe]4f75d26s1 (c) [Xe]4f75d16s2 (d) [Xe]4f85d66s2

Which of the following represents the first law of Faraday[MP PMT 1991]

10. In alkaline medium KMnO4 reacts as follows: 2KMnO4 + 2KOH - 2K2MnO4+H2O + O2. therefore it's equivalent mass will be : (1)31.6 (2)52.7(3)79 (4)158

what is the spinel structure?why structure of Fe3O4 structure called inverse spinel structure?

48.What is Rosenmund reaction?

47. Formula of enthalpy of formation

34. Total no. Of voids in 0.5 moles of a compound forming hcp structures are?

Calculatethe depression in the freezing point of water when 10 g ofCH3CH2CHClCOOHis added to 250 g of water. Ka= 1.4 × 10−3,Kf = 1.86K kgmol−1.

If the ionic radii of K+ and F− are nearly the same (i.e 1.34 ˚A) then the atomic radii of K and F are respectively are

A monatomic gas at pressure P, and volume V1 is compressed adiabatically to 1/8th its original volume.What is the final presssure of the gas?

An element (atomic mass = 100 g/mole) having BCC structure has an edge length of 400 pm. The density of the element is (no. of atoms in BCCZ=2).

A covered wooden box has the inner dimension as 1.15 m , 0.75 m and 0.35 m and the thickness of wood is 2.5 cm . the volume of the wood will b

An HCl molecules has a dipole moment of 3.4×10−30 C-m. Assuming that equal and opposite charges lie on the two atoms to form a dipole, what is the magnitude of this charge? The separation between the two atoms of HCl is 1.0×10−10 m.

UV light of wavelength 300 nm and intensity 1 Wm−2 falls on the surface of photo electric metal. If one percent of incident photons, produce photo electrons, then the number of photo electrons emitted from an area of 1.0 cm2 of the surface is nearly

Ozonolysis of 2-methyl butene-2 yields

Ch3-ch2-ch2-ch=ch-ch3 is an unsymmetrical alkene and what is the major product on its hydrolysis.

What is meaning of 1st,2nd,3rd Coordination Number

Ionic solids conduct electricity in molten state but not in solid state. Explain.

Ferric thiocyanate is formed in

16. Why nh3 is basic while bih3 is only feebly basic

The normality of the excess ions (H+/OH−) in a solution obtained by mixing 100 mL of a 0.2 M H2SO4 solution with 100 mL of a 0.2 M NaOH solution is:

zn + fe2+ gives zn2+ + fe. the value of kc for this reaction is 10^23 calculate the standard free energy change

The shape of which of the following molecules will not be distorted?

26.Why does shielding and penetration effect have the same order as s>p>d>f? What is the correlation between the two?

Which is the most electropositive substance among the following?

7. B-is present in FCC lattice and A+ occupied octahedral void. If radius of B- is x . Calculate the maximum size of A+ that can fit octahedral void.

Out of , which is an example of vinylic halide?

Work done in vaporisation of one mole of water at 373K and the pressure of 1 atm is approx (for ideal gas) - A)-3100 J B)-3000 J C)3200 J D)3000

Which of the following is most reactive toward Hydrolysis ?(1) CH3CONH2(2) CH3COCl(3) ethanoic anhydride(4) ethyl ethanoate

Which of the following reaction(s) can be spontaneous?

The oxidation state of Cl in Cl2O7 is:

50. how many moles of electrons weigh seven kilogram

In Duma's method for quantitative estimation of nitrogen, 0.5 g of an organic compound gave 100 mL of nitrogen collected at 27^° C temperature and 680 mm of Hg pressure. What is the percentage composition of nitrogen in the sample? \lbrack Given aqueous tension at 27^° C = 20 mm Hg\rbrack

11. If 100 ml gold solution is completely protected from coagulation by adding one gram gelatin before the addition of 10 ml of 10% NaCl solution the gold number of gelatin is

When 20 g of naphthoic acid (C11H8O2) is dissolved in 50g of benzene (Kf = 1.72 K kg mol-1), a freezing point depression of 2K is observed. The van't Hoff factor (i) is -

The equivalent conductance of M/32 solution of a weak monobasic acid is 8.0 mho cm2, and at infinite dilution is 400 mhocm2. The dissociation constant of this acid is:

In the series Sc (Z = 21) to Zn (Z = 30), the enthalpy of atomization of zinc is the lowest, i.e., 126 kJ mol−1. Why?

why oxoacid of phosphorus name ortho,pyro,hypo,phosphoric and phosphorus acid

Is Intertstitial defect a stichometric defect in non ionic solids??

Calculate the oxidation number of Iodine (I) in KI3 ?

26.2 mole of NaOH mix with 20 mol H2O. Find molality of NaOH??

An aqueous solution containing a non-volatile solute boils at 101∘C. What is the freezing point of the same solution?Given(Kf=1.86∘C/m and Kb=0.51∘C/m)

what is ionisation potential?

Ain't there any trick or pneumonic to learn(remember) the electrochemical series.......

What is the term given for the arrangement of electrons in the orbitals of an atom?