46295 + Interview Questions in Chemistry

1.	All fluorine atoms are in same plane in CHF3 ClF3 XeOF4 All of the above
Answer» All fluorine atoms are in same plane in CHF3 ClF3 XeOF4 All of the above

Discussion

2.	Electrons in a certain energy level n=n1 can emit 6 spectral lines. When they are in another energy level n=n2, they can emit 10 spectral lines. The orbital speed of the electrons in the two orbits are in the ratio of
Answer» Electrons in a certain energy level $n = n_{1}$ can emit $6$ spectral lines. When they are in another energy level $n = n_{2}$ , they can emit $10$ spectral lines. The orbital speed of the electrons in the two orbits are in the ratio of

Discussion

3.	How to calculate the bond order for polyatomic species
Answer» How to calculate the bond order for polyatomic species

Discussion

4.	1. An electron moving along the x-axis has a positiongiven by x=20te–tm, where t is in second. How far isthe electron from the origin when it momentarilystop?(1) 20 m(2) 20e′m(3) 20/e'(4) Zero
Answer» 1. An electron moving along the x-axis has a position given by x=20te–tm, where t is in second. How far is the electron from the origin when it momentarily stop? (1) 20 m (2) 20e′m (3) 20/e' (4) Zero

Discussion

5.	8. How does CaC_2 has 3 covalent bonds??
Answer» 8. How does CaC_2 has 3 covalent bonds??

Discussion

6.	Among the following electrolytes, which is the most effective coagulating agent for Sb2S3 solution?
Answer» Among the following electrolytes, which is the most effective coagulating agent for $S b_{2} S_{3}$ solution?

6.

Among the following electrolytes, which is the most effective coagulating agent for Sb2S3 solution?

Answer»

Among the following electrolytes, which is the most effective coagulating agent for $S b_{2} S_{3}$ solution?

Discussion

7.	Bithional is generally added to the soaps as an additive to function as a/an
Answer» Bithional is generally added to the soaps as an additive to function as a/an

Discussion

8.	how to calculate the bond order of C6H6
Answer» how to calculate the bond order of C6H6

Discussion

9.	59 The vapour pressure of water is 12.3 kpa at 300 Kelvin calculate the vapour pressure of 1 molal solution of solute in it
Answer» 59 The vapour pressure of water is 12.3 kpa at 300 Kelvin calculate the vapour pressure of 1 molal solution of solute in it

Discussion

10.	Which device we get by connecting cells in series?
Answer» Which device we get by connecting cells in series?

Discussion

11.	41.5.85g of NaCl is present in 55.85g of aqueous solution. The molality of NaCl in the solution is (atomic weight of Na=23and Cl=35.5)
Answer» 41.5.85g of NaCl is present in 55.85g of aqueous solution. The molality of NaCl in the solution is (atomic weight of Na=23and Cl=35.5)

Discussion

12.	1.A substance having higher reduction potential must have lower oxidation potential.A substance having lower reduction potential must have higher oxidation potential.A substance having lower oxidation potential must have higher reduction potential.A substance having higher oxidation potential must have lower reduction potential.ARE THESE STATEMENTS CORRECT?2.does the value of log x increase with the value of x? are the laws for logx also true for lnx?
Answer» 1.A substance having higher reduction potential must have lower oxidation potential.A substance having lower reduction potential must have higher oxidation potential.A substance having lower oxidation potential must have higher reduction potential.A substance having higher oxidation potential must have lower reduction potential. ARE THESE STATEMENTS CORRECT? 2.does the value of log x increase with the value of x? are the laws for logx also true for lnx?

Discussion

13.	Identify the type of pattern followed.
Answer» Identify the type of pattern followed.

Discussion

14.	67.is Coordinate complex anion Lewis base?
Answer» 67.is Coordinate complex anion Lewis base?

Discussion

15.	Differentiate thefollowing w.r.t. x:
Answer» Differentiate the following w.r.t. x:

15.

Differentiate thefollowing w.r.t. x:

Answer»

Differentiate the
following w.r.t. x:

Discussion

16.	Number of waves produced by an electron in one complete revolution in nth orbit is a]n b]nn c][n+1] d][2n+1]
Answer» Number of waves produced by an electron in one complete revolution in nth orbit is a]n b]nn c][n+1] d][2n+1]

Discussion

17.	Calculate the free energy change when 1 mol of NaCl is dissolved in water at 298 K. given: (i) Lattice energy of NaCl = -778 kJ mol−1 (ii) Hydration energy of NaCl = -778 kJ mol−1 (iii) Entropy change at 298 K = 43 J mol−1
Answer» Calculate the free energy change when 1 mol of NaCl is dissolved in water at 298 K. given: (i) Lattice energy of NaCl = -778 kJ $m o l^{- 1}$ (ii) Hydration energy of NaCl = -778 kJ $m o l^{- 1}$ (iii) Entropy change at 298 K = 43 J $m o l^{- 1}$

Discussion

18.	The beam of light consisting of two wavelengths 6500 ˚A and 5200 ˚A is used to obtain interference fringes in a Young's double slit experiment. The distance between the slits is 2 mm and the distance between the plane of the slits and the screen is 120 cm. What is the least distance from the central maximum, where the bright fringes due to both the wavelengths coincide?
Answer» The beam of light consisting of two wavelengths $6500 ˚ A$ and $5200 ˚ A$ is used to obtain interference fringes in a Young's double slit experiment. The distance between the slits is $2 mm$ and the distance between the plane of the slits and the screen is $120 cm$ . What is the least distance from the central maximum, where the bright fringes due to both the wavelengths coincide?

Discussion

19.	The basic character of transition metal monoxides follow the order
Answer» The basic character of transition metal monoxides follow the order

Discussion

20.	The density of a mixture of CO and CO2 at 303 K and 73 cm Hg is 1.5 g L−1. What is the mole percent of CO and CO2 respectively in the mixture?
Answer» The density of a mixture of $C O$ and $C O_{2}$ at $303 K$ and $73 cm$ $H g$ is $1.5 {g L}^{- 1}$ . What is the mole percent of $C O$ and $C O_{2}$ respectively in the mixture?

Discussion

21.	Why Alkoxide is less stable than Phenoxide?
Answer» Why Alkoxide is less stable than Phenoxide?

Discussion

22.	21. How many Sigma and pi bonds in ethylene and how many hybrid orbitals is in ethylene?
Answer» 21. How many Sigma and pi bonds in ethylene and how many hybrid orbitals is in ethylene?

Discussion

23.	with a suitable mechanism show how benzene can be converted to acetophenone(C6H5-COCH3)
Answer» with a suitable mechanism show how benzene can be converted to acetophenone(C6H5-COCH3)

Discussion

24.	The hybridization of Ni atom in [NiCl4]2−,[Ni(CN)4]2−&[Ni(CO)4] are respectively
Answer» The hybridization of Ni atom in $[N i C l_{4}]^{2 -}, [N i (C N)_{4}]^{2 -} & [N i (C O)_{4}]$ are respectively

Discussion

25.	Fill in the blanks with definite articles le, la, l', les.
Answer» Fill in the blanks with definite articles le, la, l', les.

Discussion

26.	What is the hibridization of c in ethanoic acid
Answer» What is the hibridization of c in ethanoic acid

Discussion

27.	Match Ligand Propertyate 1-ethylenediamine a-bident 2-hydrazene b-tridentate 3-dmg c-from hydrazenium ion on protonation 4-dien d-can form dimer
Answer» Match Ligand Propertyate 1-ethylenediamine a-bident 2-hydrazene b-tridentate 3-dmg c-from hydrazenium ion on protonation 4-dien d-can form dimer

Discussion

28.	Choose the correct order of covalent character:
Answer» Choose the correct order of covalent character:

Discussion

29.	HX+ALKYL HALIDE gives sometimes rearragement occur from pimarary cation to secondary cation but sometimes it not occur and what is the criteria to occur the rearrgement in any reaction ?
Answer» HX+ALKYL HALIDE gives sometimes rearragement occur from pimarary cation to secondary cation but sometimes it not occur and what is the criteria to occur the rearrgement in any reaction ?

Discussion

30.	Is the packing fraction simpl cubic =52%and FCC=74% will constant
Answer» Is the packing fraction simpl cubic =52%and FCC=74% will constant

Discussion

31.	32.Why the abnormal trend is followed in gr 17 for Bond dissociation energy?
Answer» 32.Why the abnormal trend is followed in gr 17 for Bond dissociation energy?

Discussion

32.	24. The number of structural isomers in C4H10O will be 1) 7 2) 8 3) 5 4) 6
Answer» 24. The number of structural isomers in C4H10O will be 1) 7 2) 8 3) 5 4) 6

Discussion

33.	4. The no of faraday required to produce one mole of H20 from hydrogen oxygen fuel cell containing aquaeous alkali as electrolyte is 1)1 2)3 3)2 4)4
Answer» 4. The no of faraday required to produce one mole of H20 from hydrogen oxygen fuel cell containing aquaeous alkali as electrolyte is 1)1 2)3 3)2 4)4

Discussion

34.	(x-2root6)(5root3+5root2)÷5root3-5root2=1 , then find x
Answer» (x-2root6)(5root3+5root2)÷5root3-5root2=1 , then find x

Discussion

35.	In a pseudo first order hydrolysis of ester in water, the following results were obtained: t/s0306090[Ester]/mol L−10.550.310.170.085 Calculate the average rate of reaction between the time interval 30 to 60 s. t/s0306090[Ester]/mol L−10.550.310.170.085 Calculate the psuedo first order rate constant for the hydrolysis of ester.
Answer» In a pseudo first order hydrolysis of ester in water, the following results were obtained: $\begin{matrix} t / s & 0 & 30 & 60 & 90 [E s t e r] / m o l L^{- 1} & 0.55 & 0.31 & 0.17 & 0.085 \end{matrix}$ Calculate the average rate of reaction between the time interval 30 to 60 s. $\begin{matrix} t / s & 0 & 30 & 60 & 90 [E s t e r] / m o l L^{- 1} & 0.55 & 0.31 & 0.17 & 0.085 \end{matrix}$ Calculate the psuedo first order rate constant for the hydrolysis of ester.

35.

In a pseudo first order hydrolysis of ester in water, the following results were obtained: t/s0306090[Ester]/mol L−10.550.310.170.085 Calculate the average rate of reaction between the time interval 30 to 60 s. t/s0306090[Ester]/mol L−10.550.310.170.085 Calculate the psuedo first order rate constant for the hydrolysis of ester.

Answer»

In a pseudo first order hydrolysis of ester in water, the following results were obtained:
$\begin{matrix} t / s & 0 & 30 & 60 & 90 [E s t e r] / m o l L^{- 1} & 0.55 & 0.31 & 0.17 & 0.085 \end{matrix}$
Calculate the average rate of reaction between the time interval 30 to 60 s.

$\begin{matrix} t / s & 0 & 30 & 60 & 90 [E s t e r] / m o l L^{- 1} & 0.55 & 0.31 & 0.17 & 0.085 \end{matrix}$
Calculate the psuedo first order rate constant for the hydrolysis of ester.

Discussion

36.	Which of the following reactions is not associated with 'solvay's 'process of manufacture of sodium carbonate?
Answer» Which of the following reactions is not associated with 'solvay's 'process of manufacture of sodium carbonate?

Discussion

37.	62. A gas absorbs photon of 355nm and emit at two wavelengths. If one of the emission us at 680nm the other is at 1035nm 325nm 743nm 518nm
Answer» 62. A gas absorbs photon of 355nm and emit at two wavelengths. If one of the emission us at 680nm the other is at 1035nm 325nm 743nm 518nm

Discussion

38.	Assertion (A) Molarity of a solution in liquid state changes with temperature. Reason (R) The volume of a solution changes with change in temperature.
Answer» Assertion (A) Molarity of a solution in liquid state changes with temperature. Reason (R) The volume of a solution changes with change in temperature.

Discussion

39.	why the metals of d orbitals formed coloured ions ?
Answer» why the metals of d orbitals formed coloured ions ?

Discussion

40.	In LiF, the structure of F− is
Answer» In LiF, the structure of $F^{-}$ is

Discussion

41.	The coolant usually contains a solution of antifreeze prepared by mixing equal volumes of ethylene glycol C2H4(OH)2 and water. The density of ethylene glycol is 1.113 g cm−3. Thus, the freezing point of the mixture is: (KfofH2O=1.86Kkg mol−1)
Answer» The coolant usually contains a solution of antifreeze prepared by mixing equal volumes of ethylene glycol $C_{2} H_{4} (O H)_{2}$ and water. The density of ethylene glycol is $1.113 g c m^{- 3}$ . Thus, the freezing point of the mixture is: $(K_{f} o f H_{2} O = 1.86 K k g m o l^{- 1})$

Discussion

42.	Howis O3estimated quantitatively?
Answer» How is O₃ estimated quantitatively?

Discussion

43.	Which of the following molecules do not have plane of symmetry?
Answer» Which of the following molecules do not have plane of symmetry?

Discussion

44.	explain the BLACK HOLE ?
Answer» explain the BLACK HOLE ?

Discussion

45.	dx/dt =k[A]^0.5[B]^0.5[C]^0.5,what will be the order of the reaction?
Answer» dx/dt =k[A]^0.5[B]^0.5[C]^0.5,what will be the order of the reaction?

Discussion

46.	What is the order of Band gap in the following materials?
Answer» What is the order of Band gap in the following materials?

Discussion

47.	What is the density of wet air (in g/L) that has the partial pressure of water of 22.5 torr at 1 atm and 300 K?(Given: vapour pressure of H2O is 30 torr and the average molar mass of air is 29 g/mol)
Answer» What is the density of wet air (in $g/L$ ) that has the partial pressure of water of $22.5$ torr at $1$ atm and $300 K$ ? $($ Given: vapour pressure of $H_{2} O$ is $30$ torr and the average molar mass of air is $29 g/mol)$

Discussion

48.	At the critical point for H gas, the value of3compressibility factor, Z =8, then the value ofZ for the similar condition of CO2, O2, SO2 at theirrespective critical points will be3(1) Greater than(2) Smaller than(3) Equal to8(4) Equal to 1
Answer» At the critical point for H gas, the value of3compressibility factor, Z =8, then the value ofZ for the similar condition of CO2, O2, SO2 at theirrespective critical points will be3(1) Greater than(2) Smaller than(3) Equal to8(4) Equal to 1

Discussion

49.	100 ml of 0.2M Ch3Cooh is titrated with 0.2M NaOH solution .The pH of solution will be (pKa of ch3cooh =4.76)
Answer» 100 ml of 0.2M Ch3Cooh is titrated with 0.2M NaOH solution .The pH of solution will be (pKa of ch3cooh =4.76)

Discussion

50.	Which has the highest pH ? a) CH3COOK b) Na2CO3 c) NH4Cl d) NaNO3
Answer» Which has the highest pH ? a) CH3COOK b) Na2CO3 c) NH4Cl d) NaNO3

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

All fluorine atoms are in same plane in CHF3 ClF3 XeOF4 All of the above

Electrons in a certain energy level n=n1 can emit 6 spectral lines. When they are in another energy level n=n2, they can emit 10 spectral lines. The orbital speed of the electrons in the two orbits are in the ratio of

How to calculate the bond order for polyatomic species

1. An electron moving along the x-axis has a positiongiven by x=20te–tm, where t is in second. How far isthe electron from the origin when it momentarilystop?(1) 20 m(2) 20e′m(3) 20/e'(4) Zero

8. How does CaC_2 has 3 covalent bonds??

Among the following electrolytes, which is the most effective coagulating agent for Sb2S3 solution?

Bithional is generally added to the soaps as an additive to function as a/an

how to calculate the bond order of C6H6

59 The vapour pressure of water is 12.3 kpa at 300 Kelvin calculate the vapour pressure of 1 molal solution of solute in it

Which device we get by connecting cells in series?

41.5.85g of NaCl is present in 55.85g of aqueous solution. The molality of NaCl in the solution is (atomic weight of Na=23and Cl=35.5)

Identify the type of pattern followed.

67.is Coordinate complex anion Lewis base?

Differentiate thefollowing w.r.t. x:

Number of waves produced by an electron in one complete revolution in nth orbit is a]n b]nn c][n+1] d][2n+1]

Calculate the free energy change when 1 mol of NaCl is dissolved in water at 298 K. given: (i) Lattice energy of NaCl = -778 kJ mol−1 (ii) Hydration energy of NaCl = -778 kJ mol−1 (iii) Entropy change at 298 K = 43 J mol−1

The basic character of transition metal monoxides follow the order

The density of a mixture of CO and CO2 at 303 K and 73 cm Hg is 1.5 g L−1. What is the mole percent of CO and CO2 respectively in the mixture?

Why Alkoxide is less stable than Phenoxide?

21. How many Sigma and pi bonds in ethylene and how many hybrid orbitals is in ethylene?

with a suitable mechanism show how benzene can be converted to acetophenone(C6H5-COCH3)

The hybridization of Ni atom in [NiCl4]2−,[Ni(CN)4]2−&amp;[Ni(CO)4] are respectively

Fill in the blanks with definite articles le, la, l', les.

What is the hibridization of c in ethanoic acid

Match Ligand Propertyate 1-ethylenediamine a-bident 2-hydrazene b-tridentate 3-dmg c-from hydrazenium ion on protonation 4-dien d-can form dimer

Choose the correct order of covalent character:

HX+ALKYL HALIDE gives sometimes rearragement occur from pimarary cation to secondary cation but sometimes it not occur and what is the criteria to occur the rearrgement in any reaction ?

Is the packing fraction simpl cubic =52%and FCC=74% will constant

32.Why the abnormal trend is followed in gr 17 for Bond dissociation energy?

24. The number of structural isomers in C4H10O will be 1) 7 2) 8 3) 5 4) 6

4. The no of faraday required to produce one mole of H20 from hydrogen oxygen fuel cell containing aquaeous alkali as electrolyte is 1)1 2)3 3)2 4)4

(x-2root6)(5root3+5root2)÷5root3-5root2=1 , then find x

Which of the following reactions is not associated with 'solvay's 'process of manufacture of sodium carbonate?

62. A gas absorbs photon of 355nm and emit at two wavelengths. If one of the emission us at 680nm the other is at 1035nm 325nm 743nm 518nm

Assertion (A) Molarity of a solution in liquid state changes with temperature. Reason (R) The volume of a solution changes with change in temperature.

why the metals of d orbitals formed coloured ions ?

In LiF, the structure of F− is

The coolant usually contains a solution of antifreeze prepared by mixing equal volumes of ethylene glycol C2H4(OH)2 and water. The density of ethylene glycol is 1.113 g cm−3. Thus, the freezing point of the mixture is: (KfofH2O=1.86Kkg mol−1)

Howis O3estimated quantitatively?

Which of the following molecules do not have plane of symmetry?

explain the BLACK HOLE ?

dx/dt =k[A]^0.5[B]^0.5[C]^0.5,what will be the order of the reaction?

What is the order of Band gap in the following materials?

What is the density of wet air (in g/L) that has the partial pressure of water of 22.5 torr at 1 atm and 300 K?(Given: vapour pressure of H2O is 30 torr and the average molar mass of air is 29 g/mol)

At the critical point for H gas, the value of3compressibility factor, Z =8, then the value ofZ for the similar condition of CO2, O2, SO2 at theirrespective critical points will be3(1) Greater than(2) Smaller than(3) Equal to8(4) Equal to 1

100 ml of 0.2M Ch3Cooh is titrated with 0.2M NaOH solution .The pH of solution will be (pKa of ch3cooh =4.76)

Which has the highest pH ? a) CH3COOK b) Na2CO3 c) NH4Cl d) NaNO3

The hybridization of Ni atom in [NiCl4]2−,[Ni(CN)4]2−&[Ni(CO)4] are respectively