46295 + Interview Questions in Chemistry

1.	Arrange the following metal complex/compounds in the increasing order of spin only magnetic moment. Presume all the three are high spin system.(1) (NH4)2[Ce(NO3)6](2) Gd(NO3)3 and (3) Eu(NO3)3(Atomic numbers Ce=58, Gd=64 and Eu=63)
Answer» Arrange the following metal complex/compounds in the increasing order of spin only magnetic moment. Presume all the three are high spin system. $(1) (N H_{4})_{2} [C e (N O_{3})_{6}]$ $(2) G d (N O_{3})_{3}$ and $(3) E u (N O_{3})_{3}$ (Atomic numbers $C e = 58, G d = 64 and E u = 63)$

Discussion

2.	Which of these is not a constituent of the atmosphere?
Answer» Which of these is not a constituent of the atmosphere?

Discussion

3.	what is the oxidation number of N in HN3?
Answer» what is the oxidation number of N in HN3?

Discussion

4.	how 2 calculate no. of optical isomers?
Answer» how 2 calculate no. of optical isomers?

Discussion

5.	2.The oxidation number of nitrogen and carbon in NOClO4.
Answer» 2.The oxidation number of nitrogen and carbon in NOClO4.

Discussion

6.	How does charge density affect the capability of atom to form Hydrogen bond?
Answer» How does charge density affect the capability of atom to form Hydrogen bond?

Discussion

7.	Why ia it difficult to trace pen over a material written with pencil. we all know that pencil is made up of graphite and pen ink contains many materials like glycol. It's not a subject question, but i was wondering it!
Answer» Why ia it difficult to trace pen over a material written with pencil. we all know that pencil is made up of graphite and pen ink contains many materials like glycol. It's not a subject question, but i was wondering it!

Discussion

8.	50 What are the position of tetrahedral voids?
Answer» 50 What are the position of tetrahedral voids?

Discussion

9.	The specific conductance of 0.1 N KCl solution at 23oC is 0.012 ohm−1cm−1. The resistane of cell containing the solution at the same temperature was found to be 55 ohm. The cell constant will be:
Answer» The specific conductance of $0.1 N K C l$ solution at $23^{o} C$ is $0.012 o h m^{- 1} c m^{- 1}$ . The resistane of cell containing the solution at the same temperature was found to be $55 o h m .$ The cell constant will be:

Discussion

10.	[Fe(H2O)6]3+is strongly paramagnetic whereas [Fe(CN)6]3−is weakly paramagnetic. Explain.
Answer» [Fe(H₂O)₆]³⁺ is strongly paramagnetic whereas [Fe(CN)₆]³⁻ is weakly paramagnetic. Explain.

Discussion

11.	31.Account for the rapid rate of ethanolysis of CH3OCH2Cl with respect to CH3CH2Cl although it is a primary halide.
Answer» 31.Account for the rapid rate of ethanolysis of CH3OCH2Cl with respect to CH3CH2Cl although it is a primary halide.

Discussion

12.	In which of the following molecules both phenyl rings cannot be coplanar?
Answer» In which of the following molecules both phenyl rings cannot be coplanar?

Discussion

13.	0.5 g of fuming H2SO4 (oleum) is diluted with water. This solution is completely neutralised by 26.7 mL of 0.4 N NaOH. Find the percentage of free SO3 in the sample solution.
Answer» 0.5 g of fuming H2SO4 (oleum) is diluted with water. This solution is completely neutralised by 26.7 mL of 0.4 N NaOH. Find the percentage of free SO3 in the sample solution.

Discussion

14.	A solid has a bcc structure. If the distance of closest approach between the two atoms is 1.73∘A. The edge length of the cell is-
Answer» A solid has a bcc structure. If the distance of closest approach between the two atoms is $1.73 \circ A$ . The edge length of the cell is-

Discussion

15.	5.6 litre of helium gas at STP is adiabatically compressed to 0.7 litre. Taking the initial temperature to be T1, the work done on the gas is:
Answer» 5.6 litre of helium gas at STP is adiabatically compressed to $0.7$ litre. Taking the initial temperature to be $T_{1}$ , the work done on the gas is:

Discussion

16.	500ml of a aqueous solution contains 0.01 mole of KCL and 0.03 mole of urea .the osmotic pressure of the solution at 27 C is R=0.082L
Answer» 500ml of a aqueous solution contains 0.01 mole of KCL and 0.03 mole of urea .the osmotic pressure of the solution at 27 C is R=0.082L

Discussion

17.	Let us SUPPOSE!! If there is only one atom in the whole universe. Then will there be any external force acting on it ??
Answer» Let us SUPPOSE!! If there is only one atom in the whole universe. Then will there be any external force acting on it ??

Discussion

18.	What mole of urea required in making 2.5 kg of 0.25 molal aqueous solution?
Answer» What mole of urea required in making 2.5 kg of 0.25 molal aqueous solution?

Discussion

19.	Generally unit of bond enthalpy is expressed in:
Answer» Generally unit of bond enthalpy is expressed in:

Discussion

20.	n25.4 g of iodine and 14.2 g of chlorine are made to react completely to yield a mixture of ICL and ICL3 . Calculate the ration Of moles of ICL and ICL3 formed.n
Answer» n25.4 g of iodine and 14.2 g of chlorine are made to react completely to yield a mixture of ICL and ICL3 . Calculate the ration Of moles of ICL and ICL3 formed.n

Discussion

21.	When copper turnings and conc. HCl is heated with copper sulphate the compound formed is
Answer» When copper turnings and conc. HCl is heated with copper sulphate the compound formed is

Discussion

22.	ΔG0 vs T plot in the Ellinghm's diagram slopes downwards for the reaction
Answer» $Δ G^{0} v s T$ plot in the Ellinghm's diagram slopes downwards for the reaction

Discussion

23.	26 A CRYSTAL is made up of particles A,B,C.A FORMS fcc packing,B occupies all octahedral voids ,C occupies all tetrahedral voids .If all the particles along one body diagonal are removed then the formula of the crystal would be?
Answer» 26 A CRYSTAL is made up of particles A,B,C.A FORMS fcc packing,B occupies all octahedral voids ,C occupies all tetrahedral voids .If all the particles along one body diagonal are removed then the formula of the crystal would be?

Discussion

24.	The correct order of increasing acidic strengths is:
Answer» The correct order of increasing acidic strengths is:

Discussion

25.	The mean free path of molecules of a gas, (radius 'r') is inversely proportional to
Answer» The mean free path of molecules of a gas, (radius ' $r$ ') is inversely proportional to

Discussion

26.	Which is the most stable conformational isomer of cis-1-bromo-2-chlorocyclohexane ?
Answer» Which is the most stable conformational isomer of cis-1-bromo-2-chlorocyclohexane ?

Discussion

27.	28.What is the molarity of 4.9%H3PO4 solution by mass (density of H3PO4 =1.22g/ml)?
Answer» 28.What is the molarity of 4.9%H3PO4 solution by mass (density of H3PO4 =1.22g/ml)?

Discussion

28.	The main product in the Kolbe’s electrolysis of is
Answer» The main product in the Kolbe’s electrolysis of is

Discussion

29.	32. Describe the main features of theVSEPR theory . andWhat is dipole moment
Answer» 32. Describe the main features of theVSEPR theory . andWhat is dipole moment

Discussion

30.	16.Determine correct order between H2O & H2O2 in each case with reason 1)Hydrogen bond strength 2)Extent of overlapping 3)Boiling point 4)Melting point
Answer» 16.Determine correct order between H2O & H2O2 in each case with reason 1)Hydrogen bond strength 2)Extent of overlapping 3)Boiling point 4)Melting point

Discussion

31.	37. On combustion of 5 g metal, 9 g of metal oxide is formed. Hence the equivalent mass of metal is
Answer» 37. On combustion of 5 g metal, 9 g of metal oxide is formed. Hence the equivalent mass of metal is

Discussion

32.	threshold wavelength for a photosynthetic surface is wavelength of green light.then for which colour of light photoelectrons will not be emitted1.blue light2.violet light3.red light4.both 1 and 2
Answer» threshold wavelength for a photosynthetic surface is wavelength of green light.then for which colour of light photoelectrons will not be emitted 1.blue light 2.violet light 3.red light 4.both 1 and 2

Discussion

33.	59. Lim x-infinity axsquare + bx + c / pxsquare + qx + r is equal to ( ap is not equal to 0)
Answer» 59. Lim x-infinity axsquare + bx + c / pxsquare + qx + r is equal to ( ap is not equal to 0)

Discussion

34.	The equilibrium, SO2Cl2(g)⇌SO2(g)+Cl2(g) is attained at 25∘C in a closed rigid container and an inert gas, helium, is introduced keeping the volume constant. Which of the following statment(s) is/are correct?
Answer» The equilibrium, $S O_{2} C l_{2} (g) ⇌ S O_{2} (g) + C l_{2} (g)$ is attained at $25^{\circ} C$ in a closed rigid container and an inert gas, helium, is introduced keeping the volume constant. Which of the following statment(s) is/are correct?

Discussion

35.	The bond angles of a molecule having trigonal bipyramidal geometry are:
Answer» The bond angles of a molecule having trigonal bipyramidal geometry are:

Discussion

36.	RbCl has NaCl type lattice and its unit cell length is 0.30∘A greater than that for KCl. If rk+=1.33∘A, the ionic radius of Rb+ is
Answer» RbCl has NaCl type lattice and its unit cell length is $0.30 \circ A$ greater than that for KCl. If $r_{k +} = 1.33 \circ A$ , the ionic radius of $R b^{+}$ is

Discussion

37.	how to find eqivalent mass of O_{
Answer» how to find eqivalent mass of O_{

Discussion

38.	A monoatomic hydrogen gas is excited by 13.6ev energy . Which line spectra will be formed ? explain it.
Answer» A monoatomic hydrogen gas is excited by 13.6ev energy . Which line spectra will be formed ? explain it.

Discussion

39.	which of the given metal Ion form high tendency to Complex with CO? Sc+3Ti+3Mn+2Fe+2
Answer» which of the given metal Ion form high tendency to Complex with CO? Sc+3 Ti+3 Mn+2 Fe+2

Discussion

40.	Which is more basic and why Aniline and piperidine
Answer» Which is more basic and why Aniline and piperidine

Discussion

41.	What is valence tautomerism?
Answer» What is valence tautomerism?

Discussion

42.	400 h+ ions plus 200 oh - ions is equal to how much no. Of h2o ions
Answer» 400 h+ ions plus 200 oh - ions is equal to how much no. Of h2o ions

Discussion

43.	26.WHY THE BOND ANGLE OF H2S IS LESSER THAN H20??
Answer» 26.WHY THE BOND ANGLE OF H2S IS LESSER THAN H20??

Discussion

44.	A green ball weighs 75 g and comes travelling towards you at 400 cm/s. A photon of light emitted from green ball has a wavelength of 5×10−5 cm. Assuming that the error in the position of ball is the same as the wavelength of itself, calculate the error in the momentum of the green ball.
Answer» A green ball weighs 75 g and comes travelling towards you at 400 cm/s. A photon of light emitted from green ball has a wavelength of $5 \times 10^{- 5}$ cm. Assuming that the error in the position of ball is the same as the wavelength of itself, calculate the error in the momentum of the green ball.

Discussion

45.	When concentrated H2SO4 is added to dry KNO3, brown fumes evolves. These fumes are
Answer» When concentrated $H_{2} S O_{4}$ is added to dry $K N O_{3}$ , brown fumes evolves. These fumes are

Discussion

46.	x ml of 1 M HCl and x ml of 1 M NaOH are mixed then temperature increases by y^{†extdegree C}. If 2x ml ofsame acid and base is mixed then temperature increases by 1)y^° c (2) 2y^° C (3) 3y^{†extdegree c} () 0.5y^°
Answer» x ml of 1 M HCl and x ml of 1 M NaOH are mixed then temperature increases by y^{†extdegree C}. If 2x ml ofsame acid and base is mixed then temperature increases by 1)y^° c (2) 2y^° C (3) 3y^{†extdegree c} () 0.5y^°

Discussion

47.	Wurtz reaction of certain alkyl halide 'X' yields an organic compound 3,4 - dimethyl hexane, then which of the following is an isomer of 'X' a. n - butyl chloride b. Isobutyl chloride c. Tertiary butyl chloride d. Sec butyl chloride
Answer» Wurtz reaction of certain alkyl halide 'X' yields an organic compound 3,4 - dimethyl hexane, then which of the following is an isomer of 'X' a. n - butyl chloride b. Isobutyl chloride c. Tertiary butyl chloride d. Sec butyl chloride

47.

Wurtz reaction of certain alkyl halide 'X' yields an organic compound 3,4 - dimethyl hexane, then which of the following is an isomer of 'X' a. n - butyl chloride b. Isobutyl chloride c. Tertiary butyl chloride d. Sec butyl chloride

Answer»

Wurtz reaction of certain alkyl halide 'X' yields an organic compound 3,4 -

dimethyl hexane, then which of the following is an isomer of 'X'

a. n - butyl chloride b. Isobutyl chloride

c. Tertiary butyl chloride d. Sec butyl chloride

Discussion

48.	Copper crystallises in a face centred cubic lattice with a unit cell length of 361 pm. The density of copper is: (Atomic mass of Cu=63 u). [0.77 Mark]
Answer» Copper crystallises in a face centred cubic lattice with a unit cell length of $361 pm$ . The density of copper is: (Atomic mass of $C u = 63 u)$ . [0.77 Mark]

Discussion

49.	Which of the following has the same pH as 1 L of a 0.1 M CH3COOH solution?Ka=1.8×10−5 for CH3COOHTake (1.34)2=1.8
Answer» Which of the following has the same pH as 1 L of a 0.1 M $C H_{3} C O O H$ solution? $K_{a} = 1.8 \times 10^{- 5}$ for $C H_{3} C O O H$ Take $(1.34)^{2} = 1.8$

Discussion

50.	How to find central atom of a compound if more than one monoatom is there?
Answer» How to find central atom of a compound if more than one monoatom is there?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Arrange the following metal complex/compounds in the increasing order of spin only magnetic moment. Presume all the three are high spin system.(1) (NH4)2[Ce(NO3)6](2) Gd(NO3)3 and (3) Eu(NO3)3(Atomic numbers Ce=58, Gd=64 and Eu=63)

Which of these is not a constituent of the atmosphere?

what is the oxidation number of N in HN3?

how 2 calculate no. of optical isomers?

2.The oxidation number of nitrogen and carbon in NOClO4.

How does charge density affect the capability of atom to form Hydrogen bond?

Why ia it difficult to trace pen over a material written with pencil. we all know that pencil is made up of graphite and pen ink contains many materials like glycol. It's not a subject question, but i was wondering it!

50 What are the position of tetrahedral voids?

The specific conductance of 0.1 N KCl solution at 23oC is 0.012 ohm−1cm−1. The resistane of cell containing the solution at the same temperature was found to be 55 ohm. The cell constant will be:

[Fe(H2O)6]3+is strongly paramagnetic whereas [Fe(CN)6]3−is weakly paramagnetic. Explain.

31.Account for the rapid rate of ethanolysis of CH3OCH2Cl with respect to CH3CH2Cl although it is a primary halide.

In which of the following molecules both phenyl rings cannot be coplanar?

0.5 g of fuming H2SO4 (oleum) is diluted with water. This solution is completely neutralised by 26.7 mL of 0.4 N NaOH. Find the percentage of free SO3 in the sample solution.

A solid has a bcc structure. If the distance of closest approach between the two atoms is 1.73∘A. The edge length of the cell is-

5.6 litre of helium gas at STP is adiabatically compressed to 0.7 litre. Taking the initial temperature to be T1, the work done on the gas is:

500ml of a aqueous solution contains 0.01 mole of KCL and 0.03 mole of urea .the osmotic pressure of the solution at 27 C is R=0.082L

Let us SUPPOSE!! If there is only one atom in the whole universe. Then will there be any external force acting on it ??

What mole of urea required in making 2.5 kg of 0.25 molal aqueous solution?

Generally unit of bond enthalpy is expressed in:

n25.4 g of iodine and 14.2 g of chlorine are made to react completely to yield a mixture of ICL and ICL3 . Calculate the ration Of moles of ICL and ICL3 formed.n

When copper turnings and conc. HCl is heated with copper sulphate the compound formed is

ΔG0 vs T plot in the Ellinghm's diagram slopes downwards for the reaction

26 A CRYSTAL is made up of particles A,B,C.A FORMS fcc packing,B occupies all octahedral voids ,C occupies all tetrahedral voids .If all the particles along one body diagonal are removed then the formula of the crystal would be?

The correct order of increasing acidic strengths is:

The mean free path of molecules of a gas, (radius 'r') is inversely proportional to

Which is the most stable conformational isomer of cis-1-bromo-2-chlorocyclohexane ?

28.What is the molarity of 4.9%H3PO4 solution by mass (density of H3PO4 =1.22g/ml)?

The main product in the Kolbe’s electrolysis of is

32. Describe the main features of theVSEPR theory . andWhat is dipole moment

16.Determine correct order between H2O & H2O2 in each case with reason 1)Hydrogen bond strength 2)Extent of overlapping 3)Boiling point 4)Melting point

37. On combustion of 5 g metal, 9 g of metal oxide is formed. Hence the equivalent mass of metal is

threshold wavelength for a photosynthetic surface is wavelength of green light.then for which colour of light photoelectrons will not be emitted1.blue light2.violet light3.red light4.both 1 and 2

59. Lim x-infinity axsquare + bx + c / pxsquare + qx + r is equal to ( ap is not equal to 0)

The equilibrium, SO2Cl2(g)⇌SO2(g)+Cl2(g) is attained at 25∘C in a closed rigid container and an inert gas, helium, is introduced keeping the volume constant. Which of the following statment(s) is/are correct?

The bond angles of a molecule having trigonal bipyramidal geometry are:

RbCl has NaCl type lattice and its unit cell length is 0.30∘A greater than that for KCl. If rk+=1.33∘A, the ionic radius of Rb+ is

how to find eqivalent mass of O_{

A monoatomic hydrogen gas is excited by 13.6ev energy . Which line spectra will be formed ? explain it.

which of the given metal Ion form high tendency to Complex with CO? Sc+3Ti+3Mn+2Fe+2

Which is more basic and why Aniline and piperidine

What is valence tautomerism?

400 h+ ions plus 200 oh - ions is equal to how much no. Of h2o ions

26.WHY THE BOND ANGLE OF H2S IS LESSER THAN H20??

A green ball weighs 75 g and comes travelling towards you at 400 cm/s. A photon of light emitted from green ball has a wavelength of 5×10−5 cm. Assuming that the error in the position of ball is the same as the wavelength of itself, calculate the error in the momentum of the green ball.

When concentrated H2SO4 is added to dry KNO3, brown fumes evolves. These fumes are

x ml of 1 M HCl and x ml of 1 M NaOH are mixed then temperature increases by y^{†extdegree C}. If 2x ml ofsame acid and base is mixed then temperature increases by 1)y^° c (2) 2y^° C (3) 3y^{†extdegree c} () 0.5y^°

Wurtz reaction of certain alkyl halide 'X' yields an organic compound 3,4 - dimethyl hexane, then which of the following is an isomer of 'X' a. n - butyl chloride b. Isobutyl chloride c. Tertiary butyl chloride d. Sec butyl chloride

Copper crystallises in a face centred cubic lattice with a unit cell length of 361 pm. The density of copper is: (Atomic mass of Cu=63 u). [0.77 Mark]

Which of the following has the same pH as 1 L of a 0.1 M CH3COOH solution?Ka=1.8×10−5 for CH3COOHTake (1.34)2=1.8

How to find central atom of a compound if more than one monoatom is there?