46295 + Interview Questions in Chemistry

1.	Calculate the enthalpy of the following reaction. H2C = CH2(g) + H2(g) →CH3 − CH3(g)The bond energies of C - H, C - C, C = C & H - H are 99, 83, 147 & 104 Kcal respectively.
Answer» Calculate the enthalpy of the following reaction. $H_{2} C = C H_{2} (g) + H_{2} (g) \to C H_{3} - C H_{3} (g)$ The bond energies of C - H, C - C, C = C & H - H are 99, 83, 147 & 104 Kcal respectively.

Discussion

2.	The intercept of the line drawn for log P (P in atm) and log1V (V in the litre) for 1 mole of an ideal gas at 27∘ C is equal to
Answer» The intercept of the line drawn for log P (P in atm) and $l o g \frac{1}{V}$ (V in the litre) for 1 mole of an ideal gas at $27^{\circ}$ C is equal to

Discussion

3.	treatment of cyclopen†an one with methyl lithium gives which of the following specie
Answer» treatment of cyclopen†an one with methyl lithium gives which of the following specie

Discussion

4.	show that the wavelenght of electromagnetic radiation is equal to de broglie wavelengh. of photon
Answer» show that the wavelenght of electromagnetic radiation is equal to de broglie wavelengh. of photon

Discussion

5.	Four charges each equal to Q are placed at the four corners of a square and a charge q is placed at thecentre of the square. If the system is in equilibrium then the value of q is
Answer» Four charges each equal to Q are placed at the four corners of a square and a charge q is placed at the centre of the square. If the system is in equilibrium then the value of q is

Discussion

6.	78. "In Benzene, the bond energy of C-C increases due to π electrons of C=C" Explain
Answer» 78. "In Benzene, the bond energy of C-C increases due to π electrons of C=C" Explain

Discussion

7.	In the conversion of limestone to lime: CaCO3(s)→CaO(s)+CO2(g) The values of △H∘ and △S∘ are 179.1 kJ mol−1 and 160.2 JK−1 respectively at 298 K and 1 bar. Assuming △H∘ and △S∘ remains constant with temperature, at which temperature conversion of limestone to lime will be spontaneous:
Answer» In the conversion of limestone to lime: $C a C O_{3} (s) \to C a O (s) + C O_{2} (g)$ The values of $△ H^{\circ}$ and $△ S^{\circ}$ are 179.1 kJ $m o l^{- 1}$ and 160.2 J $K^{- 1}$ respectively at 298 K and 1 bar. Assuming $△ H^{\circ}$ and $△ S^{\circ}$ remains constant with temperature, at which temperature conversion of limestone to lime will be spontaneous:

Discussion

8.	If helium and methane are allowed to diffuse out of the container under similar conditions of temperature and pressure,then the ratio of rate of diffusion of helium to methane is:
Answer» If helium and methane are allowed to diffuse out of the container under similar conditions of temperature and pressure,then the ratio of rate of diffusion of helium to methane is:

Discussion

9.	Which one of the following would undergo hydrolysis most readily with aqueous sodium hydroxide to form the corresponding hydroxy derivatives?
Answer» Which one of the following would undergo hydrolysis most readily with aqueous sodium hydroxide to form the corresponding hydroxy derivatives?

Discussion

10.	The difference in the heat of reaction at constant volume and at constant pressure for the given reaction is:CH4(g)+O2(g)Mn2+−−−→HCOOH(l)+H2(g)
Answer» The difference in the heat of reaction at constant volume and at constant pressure for the given reaction is: $C H_{4} (g) + O_{2} (g) M n^{2 +} - -- \to H C O O H (l) + H_{2} (g)$

10.

The difference in the heat of reaction at constant volume and at constant pressure for the given reaction is:CH4(g)+O2(g)Mn2+−−−→HCOOH(l)+H2(g)

Answer»

The difference in the heat of reaction at constant volume and at constant pressure for the given reaction is:

$C H_{4} (g) + O_{2} (g) M n^{2 +} - -- \to H C O O H (l) + H_{2} (g)$

Discussion

11.	Equivalent mass
Answer» Equivalent mass

Discussion

12.	35 Carbon reduction process is not commercially applicable for which of the following set of oxides to extract the respective metal? ZnO, Fe2O3,Al2O3,SnO2,MgO A ZnO, Fe2O3,SnO2 B ZnO, SnO2,MgO C MgO, Al2O3 D. MgO, SnO2,Al2O3
Answer» 35 Carbon reduction process is not commercially applicable for which of the following set of oxides to extract the respective metal? ZnO, Fe2O3,Al2O3,SnO2,MgO A ZnO, Fe2O3,SnO2 B ZnO, SnO2,MgO C MgO, Al2O3 D. MgO, SnO2,Al2O3

Discussion

13.	Differentiate between aromatic compounds, antiaromatic compounds, and non-aromatic compounds.
Answer» Differentiate between aromatic compounds, antiaromatic compounds, and non-aromatic compounds.

Discussion

14.	What happens when alcohols reacts with benzene
Answer» What happens when alcohols reacts with benzene

Discussion

15.	The number of Faradays (F) required to produce 2.3 g of sodium from molten NaCl (Atomic mass of Na=23 g mol−1) is:
Answer» The number of Faradays $(F)$ required to produce $2.3 g$ of sodium from molten $N a C l$ (Atomic mass of $N a = 23 {g mol}^{- 1}$ ) is:

Discussion

16.

The organic compund that gives following qualitative analysis isTestInference(a) Dil. HClInsoluble (b) NaOH solution Soluble (c) Br2 /water Decolourisation

Answer»

The organic compund that gives following qualitative analysis is

Test	Inference
(a) Dil. HCl	Insoluble
(b) NaOH solution	Soluble
(c) $B r_{2}$ /water	Decolourisation

Discussion

17.	28 If 0.75 mol of ideal gas expand isothermally at 27*C from 15L to 25L the maximum work obtained is
Answer» 28 If 0.75 mol of ideal gas expand isothermally at 27*C from 15L to 25L the maximum work obtained is

Discussion

18.	ortho product is major product in phenols but in ethers para products are major products. Why
Answer» ortho product is major product in phenols but in ethers para products are major products. Why

Discussion

19.	Which among the following elements is not a transition metal?
Answer» Which among the following elements is not a transition metal?

Discussion

20.	Calculate the volume of oxygen at STP that can be produced by 12.25g of KClO3?
Answer» Calculate the volume of oxygen at STP that can be produced by 12.25g of KClO3?

Discussion

21.	An experiment was set up to determine the percentage of water absorbed by raisins.If the mass of dry raisins was 40 g, and the mass of wet raisins was 45 g,then the percentage of water absorbed would be :(1) 45 g40 g×100(2) 40 g45 g×100(3) (45-40)g40g×100(4) (45-40)g45 g×100
Answer» An experiment was set up to determine the percentage of water absorbed by raisins.If the mass of dry raisins was 40 g, and the mass of wet raisins was 45 g,then the percentage of water absorbed would be : (1) $\frac{45 g}{40 g} \times 100$ (2) $\frac{40 g}{45 g} \times 100$ (3) $\frac{(45 - 40) g}{40 g} \times 100$ (4) $\frac{(45 - 40) g}{45 g} \times 100$

Discussion

22.	The most stable conformation of 3-fluorobutan-2-ol is:
Answer» The most stable conformation of 3-fluorobutan-2-ol is:

Discussion

23.	Alcoholsare comparatively more soluble in water than hydrocarbons ofcomparable molecular masses. Explain this fact.
Answer» Alcohols are comparatively more soluble in water than hydrocarbons of comparable molecular masses. Explain this fact.

Discussion

24.	For coagulating As2S3 colloidal sol, which of the following will have the highest coagulation value :
Answer» For coagulating $A s_{2} S_{3}$ colloidal sol, which of the following will have the highest coagulation value :

Discussion

25.	Rules for drawing free body diagrams.
Answer» Rules for drawing free body diagrams.

Discussion

26.	Consider the following graph of Z vs 1Vm drawn at low pressure and inversion temperature, using the viral form of Van der Waal's equation: Z=1+(b−aRT)1Vm+b2Vm2+.... Find the critical volumeVc in cm3?
Answer» Consider the following graph of $Z v s \frac{1}{V_{m}}$ drawn at low pressure and inversion temperature, using the viral form of Van der Waal's equation: $Z = 1 + (b - \frac{a}{R T}) \frac{1}{V_{m}} + \frac{b^{2}}{{V_{m}}^{2}} + . . . .$ Find the critical volume $V_{c} i n c m^{3}$ ?

Discussion

27.	Which of the following represents the rate law for the following reversible reaction?
Answer» Which of the following represents the rate law for the following reversible reaction?

Discussion

28.	Which one of the following is incorrect IUPAC name?
Answer» Which one of the following is incorrect IUPAC name?

Discussion

29.	A solid crystal is composed of X, Y and Z atoms. Z atoms (radius 200 pm) form cubic closed packed structure where as X (radius 50 pm) and Y (radius 100 pm) occupy respective voids. Assume all the voids are occupied.If all the atoms along one body diagonal are removed, then the formula of the compound becomes:
Answer» A solid crystal is composed of X, Y and Z atoms. Z atoms (radius 200 pm) form cubic closed packed structure where as X (radius 50 pm) and Y (radius 100 pm) occupy respective voids. Assume all the voids are occupied. If all the atoms along one body diagonal are removed, then the formula of the compound becomes:

Discussion

30.	23. If solubility product of the base M{(OH)}_3 is 2.7\ast10^{-11} the concentration of OH^-will be
Answer» 23. If solubility product of the base M{(OH)}_3 is 2.7\ast10^{-11} the concentration of OH^-will be

Discussion

31.	35. In the complex acetylbromidodicarbonylbis(triethyphosphine)iron(II),the number of Fe-C bonds is?
Answer» 35. In the complex acetylbromidodicarbonylbis(triethyphosphine)iron(II),the number of Fe-C bonds is?

Discussion

32.	Dipole
Answer» Dipole

Discussion

33.	what is bridge bond
Answer» what is bridge bond

Discussion

34.	In which C-C bond in the following compound, the inductive effect is expected to be the least?
Answer» In which C-C bond in the following compound, the inductive effect is expected to be the least?

Discussion

35.	QUESTION 2.25(i) Among the following compounds, identify which are insoluble, partially soluble and highly soluble in water? (i) Phenol (ii) Toluene (iii) Formic acid (iv) Ethylene glycol (v) Chloroform (vi) Pentanol
Answer» QUESTION 2.25(i) Among the following compounds, identify which are insoluble, partially soluble and highly soluble in water? (i) Phenol (ii) Toluene (iii) Formic acid (iv) Ethylene glycol (v) Chloroform (vi) Pentanol

35.

QUESTION 2.25(i) Among the following compounds, identify which are insoluble, partially soluble and highly soluble in water? (i) Phenol (ii) Toluene (iii) Formic acid (iv) Ethylene glycol (v) Chloroform (vi) Pentanol

Answer»

QUESTION 2.25(i)

Among the following compounds, identify which are insoluble, partially soluble and highly soluble in water?

(i) Phenol

(ii) Toluene

(iii) Formic acid

(iv) Ethylene glycol

(v) Chloroform

(vi) Pentanol

Discussion

36.	Pyran is
Answer» Pyran is

Discussion

37.	What is Schrdinger wave equation ? What is electron cloud also?
Answer» What is Schrdinger wave equation ? What is electron cloud also?

Discussion

38.	How many structural isomers are possible for the molecular formula, C5H13N which gives a positive carbylamine test?
Answer» How many structural isomers are possible for the molecular formula, $C_{5} H_{13} N$ which gives a positive carbylamine test?

Discussion

39.	IUPAC name of (CH3)2CH - N(C2H5)2
Answer» IUPAC name of (CH₃)₂CH - N(C₂H₅)₂

Discussion

40.	The c-c bond length in propene is little shorter (1.49 ∘A) then the c-c bond length (1.54 ∘A) is ethane. This is due to
Answer» The c-c bond length in propene is little shorter $(1.49 \circ A)$ then the c-c bond length $(1.54 \circ A)$ is ethane. This is due to

Discussion

41.	In certain chemical Reaction, ΔH = 150KJ and ΔS = 100J/K at 300K. The value of ΔG would be
Answer» In certain chemical Reaction, $Δ H = 150 K J$ and $Δ S = 100 J / K$ at $300 K$ . The value of $Δ G$ would be

Discussion

42.	all bonds are identical i 1.pcl5 2.B2H6 3. C2H6 4.PF3
Answer» all bonds are identical i 1.pcl5 2.B2H6 3. C2H6 4.PF3

Discussion

43.	Identify product D, in the given reaction sequence.
Answer» Identify product D, in the given reaction sequence.

Discussion

44.	Write balanced chemical equation for the reaction taking place when dry blue crystals of copper sulphate are dropped into concentrated sulphuric acid
Answer» Write balanced chemical equation for the reaction taking place when dry blue crystals of copper sulphate are dropped into concentrated sulphuric acid

Discussion

45.	Benzaldehyde reacts with X to produce cinnamaldehyde in Claisen condensation. X is :
Answer» Benzaldehyde reacts with X to produce cinnamaldehyde in Claisen condensation. X is :

Discussion

46.	What will be tge value of Total Pressure (P_s) when Y_a - X_a is minimum? Y(a) denoted Mole fraction of A in vapour phase while X(a) shows Mole fraction of A in liquid state
Answer» What will be tge value of Total Pressure (P_s) when Y_a - X_a is minimum? Y(a) denoted Mole fraction of A in vapour phase while X(a) shows Mole fraction of A in liquid state

Discussion

47.	Total structure for C4H9
Answer» Total structure for C4H9

Discussion

48.	8. FeO crystallizes into a cubic structure and has edge length of 5.0 angstrom ,the density is 4 gm/cm cube then the no of ferrous and oxide ions present in each unit is ? 1) 4 ferrous and 4 oxide 2) 2 ferrous and 2 oxide 3) 4 ferrous and 2 oxide 4) 2 ferrous and 4 oxide
Answer» 8. FeO crystallizes into a cubic structure and has edge length of 5.0 angstrom ,the density is 4 gm/cm cube then the no of ferrous and oxide ions present in each unit is ? 1) 4 ferrous and 4 oxide 2) 2 ferrous and 2 oxide 3) 4 ferrous and 2 oxide 4) 2 ferrous and 4 oxide

Discussion

49.	Give three uses of chlorine.
Answer» Give three uses of chlorine.

Discussion

50.	Which of the following noble gases finds use in cryogenics and very low-temperature refrigeration?
Answer» Which of the following noble gases finds use in cryogenics and very low-temperature refrigeration?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Calculate the enthalpy of the following reaction. H2C = CH2(g) + H2(g) →CH3 − CH3(g)The bond energies of C - H, C - C, C = C &amp; H - H are 99, 83, 147 &amp; 104 Kcal respectively.

The intercept of the line drawn for log P (P in atm) and log1V (V in the litre) for 1 mole of an ideal gas at 27∘ C is equal to

treatment of cyclopen†an one with methyl lithium gives which of the following specie

show that the wavelenght of electromagnetic radiation is equal to de broglie wavelengh. of photon

Four charges each equal to Q are placed at the four corners of a square and a charge q is placed at thecentre of the square. If the system is in equilibrium then the value of q is

78. "In Benzene, the bond energy of C-C increases due to π electrons of C=C" Explain

If helium and methane are allowed to diffuse out of the container under similar conditions of temperature and pressure,then the ratio of rate of diffusion of helium to methane is:

Which one of the following would undergo hydrolysis most readily with aqueous sodium hydroxide to form the corresponding hydroxy derivatives?

The difference in the heat of reaction at constant volume and at constant pressure for the given reaction is:CH4(g)+O2(g)Mn2+−−−→HCOOH(l)+H2(g)

Equivalent mass

35 Carbon reduction process is not commercially applicable for which of the following set of oxides to extract the respective metal? ZnO, Fe2O3,Al2O3,SnO2,MgO A ZnO, Fe2O3,SnO2 B ZnO, SnO2,MgO C MgO, Al2O3 D. MgO, SnO2,Al2O3

Differentiate between aromatic compounds, antiaromatic compounds, and non-aromatic compounds.

What happens when alcohols reacts with benzene

The number of Faradays (F) required to produce 2.3 g of sodium from molten NaCl (Atomic mass of Na=23 g mol−1) is:

The organic compund that gives following qualitative analysis isTestInference(a) Dil. HClInsoluble (b) NaOH solution Soluble (c) Br2 /water Decolourisation

28 If 0.75 mol of ideal gas expand isothermally at 27*C from 15L to 25L the maximum work obtained is

ortho product is major product in phenols but in ethers para products are major products. Why

Which among the following elements is not a transition metal?

Calculate the volume of oxygen at STP that can be produced by 12.25g of KClO3?

An experiment was set up to determine the percentage of water absorbed by raisins.If the mass of dry raisins was 40 g, and the mass of wet raisins was 45 g,then the percentage of water absorbed would be :(1) 45 g40 g×100(2) 40 g45 g×100(3) (45-40)g40g×100(4) (45-40)g45 g×100

The most stable conformation of 3-fluorobutan-2-ol is:

Alcoholsare comparatively more soluble in water than hydrocarbons ofcomparable molecular masses. Explain this fact.

For coagulating As2S3 colloidal sol, which of the following will have the highest coagulation value :

Rules for drawing free body diagrams.

Consider the following graph of Z vs 1Vm drawn at low pressure and inversion temperature, using the viral form of Van der Waal's equation: Z=1+(b−aRT)1Vm+b2Vm2+.... Find the critical volumeVc in cm3?

Which of the following represents the rate law for the following reversible reaction?

Which one of the following is incorrect IUPAC name?

23. If solubility product of the base M{(OH)}_3 is 2.7\ast10^{-11} the concentration of OH^-will be

35. In the complex acetylbromidodicarbonylbis(triethyphosphine)iron(II),the number of Fe-C bonds is?

Dipole

what is bridge bond

In which C-C bond in the following compound, the inductive effect is expected to be the least?

QUESTION 2.25(i) Among the following compounds, identify which are insoluble, partially soluble and highly soluble in water? (i) Phenol (ii) Toluene (iii) Formic acid (iv) Ethylene glycol (v) Chloroform (vi) Pentanol

Pyran is

What is Schrdinger wave equation ? What is electron cloud also?

How many structural isomers are possible for the molecular formula, C5H13N which gives a positive carbylamine test?

IUPAC name of (CH3)2CH - N(C2H5)2

The c-c bond length in propene is little shorter (1.49 ∘A) then the c-c bond length (1.54 ∘A) is ethane. This is due to

In certain chemical Reaction, ΔH = 150KJ and ΔS = 100J/K at 300K. The value of ΔG would be

all bonds are identical i 1.pcl5 2.B2H6 3. C2H6 4.PF3

Identify product D, in the given reaction sequence.

Write balanced chemical equation for the reaction taking place when dry blue crystals of copper sulphate are dropped into concentrated sulphuric acid

Benzaldehyde reacts with X to produce cinnamaldehyde in Claisen condensation. X is :

What will be tge value of Total Pressure (P_s) when Y_a - X_a is minimum? Y(a) denoted Mole fraction of A in vapour phase while X(a) shows Mole fraction of A in liquid state

Total structure for C4H9

8. FeO crystallizes into a cubic structure and has edge length of 5.0 angstrom ,the density is 4 gm/cm cube then the no of ferrous and oxide ions present in each unit is ? 1) 4 ferrous and 4 oxide 2) 2 ferrous and 2 oxide 3) 4 ferrous and 2 oxide 4) 2 ferrous and 4 oxide

Give three uses of chlorine.

Which of the following noble gases finds use in cryogenics and very low-temperature refrigeration?

Calculate the enthalpy of the following reaction. H2C = CH2(g) + H2(g) →CH3 − CH3(g)The bond energies of C - H, C - C, C = C & H - H are 99, 83, 147 & 104 Kcal respectively.