46295 + Interview Questions in Chemistry Page 19 InterviewSolution

901.	Electric potential energy possessed by a charge Q placed at the equatorial position of an electric dipole p=2qa at a distance r from the centre of the dipole is
Answer» Electric potential energy possessed by a charge Q placed at the equatorial position of an electric dipole p=2qa at a distance r from the centre of the dipole is

Discussion

902.	Ethyl alcohol on heating with conc. H2SO4 gives
Answer» Ethyl alcohol on heating with conc. $H_{2} S O_{4}$ gives

Discussion

903.	10 g MnO2 on reaction with HCl forms 2.24 L of Cl2[g] at NTP, the percentage impurity of MnO2 is MnO2 + 4HCl - MnCl2 + Cl2 + 2H2O
Answer» 10 g MnO2 on reaction with HCl forms 2.24 L of Cl2[g] at NTP, the percentage impurity of MnO2 is MnO2 + 4HCl - MnCl2 + Cl2 + 2H2O

Discussion

904.	The correct order of ionisation enthalpy for oxygen atom is:
Answer» The correct order of ionisation enthalpy for oxygen atom is:

Discussion

905.	Which of the following is arranged in order of increasing second ionisation energy?Options:C < N < O < F F < C < N < OC < N < F < OF < O < N < CHere why wont the second opt. come , cause F will easily lose 1 electron and become 1/2 filled, and C would lose electron and become 2s2?
Answer» Which of the following is arranged in order of increasing second ionisation energy? Options: C < N < O < F F < C < N < O C < N < F < O F < O < N < C Here why wont the second opt. come , cause F will easily lose 1 electron and become 1/2 filled, and C would lose electron and become 2s2?

Discussion

906.	36. What are the functional isomers of C4H802 and is CH3-CH=CH-O-CH2-OH is the functional isomers of C4H8O2.
Answer» 36. What are the functional isomers of C4H802 and is CH3-CH=CH-O-CH2-OH is the functional isomers of C4H8O2.

Discussion

907.	Give the IUPAC name of the following compound.CH2=CH−CH(CH3)2
Answer» Give the IUPAC name of the following compound. $C H_{2} = C H - C H (C H_{3})_{2}$

907.

Give the IUPAC name of the following compound.CH2=CH−CH(CH3)2

Answer»

Give the IUPAC name of the following compound.

$C H_{2} = C H - C H (C H_{3})_{2}$

Discussion

908.	47. In aqueous medium how secondary ethyl amine is more basic than tertiary ethyl amine
Answer» 47. In aqueous medium how secondary ethyl amine is more basic than tertiary ethyl amine

Discussion

909.	The value of equivalent conductivity of Al 3+ is x and Cl- is y then , the value of molar conductivity of AlCl3 will be
Answer» The value of equivalent conductivity of Al 3+ is x and Cl- is y then , the value of molar conductivity of AlCl3 will be

Discussion

910.	Which of the following has a conjugated system?
Answer» Which of the following has a conjugated system?

Discussion

911.	ntWhat is Jahn Teller tetragonal distortion in octahedral complexes??n ntn
Answer» ntWhat is Jahn Teller tetragonal distortion in octahedral complexes??n ntn

Discussion

912.	The major product of the following reaction is :
Answer» The major product of the following reaction is :

Discussion

913.	Balance the equation: NaHCO3 + Al2(SO4)3 -> Na2SO4 + Al(OH)3 + CO2
Answer» Balance the equation: NaHCO₃ + Al₂(SO₄)₃ -> Na₂SO₄ + Al(OH)₃ + CO₂

Discussion

914.	11. Why protium has more ionization energy compared to deuterium and tritium
Answer» 11. Why protium has more ionization energy compared to deuterium and tritium

Discussion

915.	Differentiate between Lead glass and Optical glass.
Answer» Differentiate between Lead glass and Optical glass.

Discussion

916.	During pyrolysis of alkane C - C bond breaks faster than C - H bond because
Answer» During pyrolysis of alkane C - C bond breaks faster than C - H bond because

Discussion

917.	is sp^2 hybridiazation is sure characterstic of a planer molecule ?
Answer» is sp^2 hybridiazation is sure characterstic of a planer molecule ?

Discussion

918.	Assume that a drop of liquid evaporates due to decrease in its surface energy and while this happens, its temperature remains unchanged. What should be the minimum radius of the drop for this to be possible? The surface tension is T, density of liquid is ρ and L is its latent heat of vaporization.
Answer» Assume that a drop of liquid evaporates due to decrease in its surface energy and while this happens, its temperature remains unchanged. What should be the minimum radius of the drop for this to be possible? The surface tension is $T$ , density of liquid is $ρ$ and $L$ is its latent heat of vaporization.

Discussion

919.	A crystal is made of particles X, Y and Z. X forms FCC packing, Y occupies all octahedral voids of X and Z occupies all tetrahedral voids of X. If all the particles along one body diagonal are removed, then the formula of crystal would be
Answer» A crystal is made of particles X, Y and Z. X forms FCC packing, Y occupies all octahedral voids of X and Z occupies all tetrahedral voids of X. If all the particles along one body diagonal are removed, then the formula of crystal would be

Discussion

920.	Which of the following statement(s) is(are) correct? (i) Oxygen is warming in nature whereas carbon dioxide is cooling. (ii) Air pollution cannot be caused by biological matter. (iii) Volcanic eruptions add valuable life supporting gases into the atmosphere. (iv) Since plants take up fixed nitrogen, they are not affected by air pollution.
Answer» Which of the following statement(s) is(are) correct? (i) Oxygen is warming in nature whereas carbon dioxide is cooling. (ii) Air pollution cannot be caused by biological matter. (iii) Volcanic eruptions add valuable life supporting gases into the atmosphere. (iv) Since plants take up fixed nitrogen, they are not affected by air pollution.

Discussion

921.	Number of spectral lines in balmer series when an electron return from 7th orbit to 1st orbit of hydrogen atom ar
Answer» Number of spectral lines in balmer series when an electron return from 7th orbit to 1st orbit of hydrogen atom ar

Discussion

922.	The shape of XeF2, XeF4 and XeO2F2 are respectively.
Answer» The shape of $X e F_{2}, X e F_{4}$ and $X e O_{2} F_{2}$ are respectively.

Discussion

923.	Find oxidation no. of oxygen, in H_2O and H_2O_{2 }
Answer» Find oxidation no. of oxygen, in H_2O and H_2O_{2 }

Discussion

924.	6. When anion leaves the normal site and electron occupies interstitial site in the crystal lattice it is called what
Answer» 6. When anion leaves the normal site and electron occupies interstitial site in the crystal lattice it is called what

Discussion

925.	49. In the reaction between SO2 and O3 the equivalent weight of sulphur dioxide is ??
Answer» 49. In the reaction between SO2 and O3 the equivalent weight of sulphur dioxide is ??

Discussion

926.	Find the work done when 5 moles of hydrogen contracts isothermally from 15 L to 5 L against a constant pressure of 1 atm at 250C.
Answer» Find the work done when $5$ moles of hydrogen contracts isothermally from $15$ L to $5$ L against a constant pressure of 1 atm at $25^{0} C$ .

Discussion

927.	find mole of hydrogen gas required for the production of 10 mole of Ammonia by Haber's process?
Answer» find mole of hydrogen gas required for the production of 10 mole of Ammonia by Haber's process?

Discussion

928.	Using bond energy data, calculate heat of formation of isoprene 5C(s) + 4H2(g) → H2C=C(CH3)-CH=CH2 Given C-H, H-H, C-C, C=C and C(s)→ C(g) respectively as 98.8 kcal, 104 kcal,83kcal,147 kcal, 171 kcal
Answer» Using bond energy data, calculate heat of formation of isoprene 5C(s) + 4H2(g) → H2C=C(CH3)-CH=CH2 Given C-H, H-H, C-C, C=C and C(s)→ C(g) respectively as 98.8 kcal, 104 kcal,83kcal,147 kcal, 171 kcal

Discussion

929.	The standard heats of formation of CCl4 (g), H2O (g), CO2 (g) and HCl (g) at 298K are−25.5,−57.8,−94.1 and−22.1 kcal mol−1 respectively. ΔH0 (298K) for the reaction CCl4 (g)+2H2O (g)→CO2 (g)+4HCl (g)
Answer» The standard heats of formation of $C C l_{4} (g), H_{2} O (g), C O_{2} (g) a n d H C l (g) a t 298 K a r e - 25.5, - 57.8, - 94.1 a n d - 22.1 k c a l m o l^{- 1} r e s p e c t i v e l y . Δ H^{0} (298 K) f o r t h e r e a c t i o n$ $C C l_{4} (g) + 2 H_{2} O (g) \to C O_{2} (g) + 4 H C l (g)$

Discussion

930.	Match the following. A.88 g of CO21.0.2 molB.6.022×1023molecules of H2O2.2 molC.5.6 L of O2 at STP3.1 molD.96 g of O24.6.022×1023moleculesE.1 mole of any gas5.3 mol
Answer» Match the following. $\begin{matrix} A . & 88 g o f C O_{2} & 1. & 0.2 m o l B . & 6.022 \times 10^{23} m o l e c u l e s o f H_{2} O & 2. & 2 m o l C . & 5.6 L o f O_{2} a t S T P & 3. & 1 m o l D . & 96 g o f O_{2} & 4. & 6.022 \times 10^{23} m o l e c u l e s E . & 1 m o l e o f a n y g a s & 5. & 3 m o l \end{matrix}$

Discussion

931.	The pH of the solution obtained by mixing equal volume of solution of pH=3 and pH=4 is: [Given: log55=1.74]
Answer» The $p H$ of the solution obtained by mixing equal volume of solution of $p H = 3$ and $p H = 4$ is: [Given: $l o g 55 = 1.74$ ]

Discussion

932.	26. In the case of osmosis, solvent molecules movefrom solution having(1) Higher vapour pressure to lower vapourpressure(2) Higher concentration to lower concentration .(3) Lower vapour pressure to higher vapourpressure(4) Higher osmotic pressure to lower osmoticpressure
Answer» 26. In the case of osmosis, solvent molecules movefrom solution having(1) Higher vapour pressure to lower vapourpressure(2) Higher concentration to lower concentration .(3) Lower vapour pressure to higher vapourpressure(4) Higher osmotic pressure to lower osmoticpressure

Discussion

933.	two solvents A and B having P Ao :P Bo =2:3 and having molar rati 3 : 2 in a solution, then the molecular fraction of B in vapour phase would be?
Answer» two solvents A and B having P A o :P B o =2:3 and having molar rati 3 : 2 in a solution, then the molecular fraction of B in vapour phase would be?

Discussion

934.	In the presence of magnetic field d-suborbit is a-5- fold degenerateb-3-fold degenerate C-7-fold degenerate D-day non degenerate.
Answer» In the presence of magnetic field d-suborbit is a-5- fold degenerate b-3-fold degenerate C-7-fold degenerate D-day non degenerate.

Discussion

935.	How many grams of sulphuric acid will be present in 0.25 mol of sulphuric acid?( atomic mass of S = 32 u and O = 16 u respectively)
Answer» How many grams of sulphuric acid will be present in 0.25 mol of sulphuric acid? ( atomic mass of S = 32 u and O = 16 u respectively)

Discussion

936.	What is stoichiometry of reaction
Answer» What is stoichiometry of reaction

Discussion

937.	Which of the following is not paramagnetic
Answer» Which of the following is not paramagnetic

Discussion

938.	Which of the following compound will not show SN1 reaction?
Answer» Which of the following compound will not show $S_{N} 1$ reaction?

Discussion

939.	Whta is the oxidation number of the central metal atom in the coordination compound [Pt(NH3)3Cl]Cl?
Answer» Whta is the oxidation number of the central metal atom in the coordination compound $[P t (N H_{3})_{3} C l] C l$ ?

Discussion

940.	Which has highest % of hydrogen
Answer» Which has highest $%$ of hydrogen

Discussion

941.	Explain how sodium sulphide is isoamorphous with silver sulphide and not with zinc sulphide or sodium nitrite ?
Answer» Explain how sodium sulphide is isoamorphous with silver sulphide and not with zinc sulphide or sodium nitrite ?

Discussion

942.	Equal moles of hydrogen and oxygen gases are placed in a container with a pin-hole through which both can escape. What fraction of the oxygen excapes in the time required for one-half of the hydrogen to escape?
Answer» Equal moles of hydrogen and oxygen gases are placed in a container with a pin-hole through which both can escape. What fraction of the oxygen excapes in the time required for one-half of the hydrogen to escape?

Discussion

943.	The increasing order of reactivity among group 1 elements is Li < Na < K < Rb <Cs whereas that among group 17 elements is F > CI > Br > I. Explain.
Answer» The increasing order of reactivity among group 1 elements is Li < Na < K < Rb <Cs whereas that among group 17 elements is F > CI > Br > I. Explain.

Discussion

944.	What will be the value of nth overtone of 1. open organ pipe 2. closed organ pipe
Answer» What will be the value of nth overtone of 1. open organ pipe 2. closed organ pipe

Discussion

945.	What is the difference between no. of moles , stoichiometric coefficients and no. of molecules?
Answer» What is the difference between no. of moles , stoichiometric coefficients and no. of molecules?

Discussion

946.	When bonded to a carbon atom, which of the following forms the strongest bond?
Answer» When bonded to a carbon atom, which of the following forms the strongest bond?

Discussion

947.	2. GFC Chain and DFC chain are interconnected with PFC OR not?
Answer» 2. GFC Chain and DFC chain are interconnected with PFC OR not?

Discussion

948.	How many resonating structures can be drawn for 2,4-pentadienyl radical?
Answer» How many resonating structures can be drawn for 2,4-pentadienyl radical?

Discussion

949.	Which of the following reactions does not occur?
Answer» Which of the following reactions does not occur?

Discussion

950.	Among the following which is most likely unhybridized molecule?(A) PCl3(B) PCl5(C) PH3(D) NH3
Answer» Among the following which is most likely unhybridized molecule? (A) PCl3 (B) PCl5 (C) PH3 (D) NH3

Discussion

Explore topic-wise InterviewSolutions in .

Electric potential energy possessed by a charge Q placed at the equatorial position of an electric dipole p=2qa at a distance r from the centre of the dipole is

Ethyl alcohol on heating with conc. H2SO4 gives

10 g MnO2 on reaction with HCl forms 2.24 L of Cl2[g] at NTP, the percentage impurity of MnO2 is MnO2 + 4HCl - MnCl2 + Cl2 + 2H2O

The correct order of ionisation enthalpy for oxygen atom is:

Which of the following is arranged in order of increasing second ionisation energy?Options:C < N < O < F F < C < N < OC < N < F < OF < O < N < CHere why wont the second opt. come , cause F will easily lose 1 electron and become 1/2 filled, and C would lose electron and become 2s2?

36. What are the functional isomers of C4H802 and is CH3-CH=CH-O-CH2-OH is the functional isomers of C4H8O2.

Give the IUPAC name of the following compound.CH2=CH−CH(CH3)2

47. In aqueous medium how secondary ethyl amine is more basic than tertiary ethyl amine

The value of equivalent conductivity of Al 3+ is x and Cl- is y then , the value of molar conductivity of AlCl3 will be

Which of the following has a conjugated system?

ntWhat is Jahn Teller tetragonal distortion in octahedral complexes??n ntn

The major product of the following reaction is :

Balance the equation: NaHCO3 + Al2(SO4)3 -> Na2SO4 + Al(OH)3 + CO2

11. Why protium has more ionization energy compared to deuterium and tritium

Differentiate between Lead glass and Optical glass.

During pyrolysis of alkane C - C bond breaks faster than C - H bond because

is sp^2 hybridiazation is sure characterstic of a planer molecule ?

Assume that a drop of liquid evaporates due to decrease in its surface energy and while this happens, its temperature remains unchanged. What should be the minimum radius of the drop for this to be possible? The surface tension is T, density of liquid is ρ and L is its latent heat of vaporization.

A crystal is made of particles X, Y and Z. X forms FCC packing, Y occupies all octahedral voids of X and Z occupies all tetrahedral voids of X. If all the particles along one body diagonal are removed, then the formula of crystal would be

Number of spectral lines in balmer series when an electron return from 7th orbit to 1st orbit of hydrogen atom ar

The shape of XeF2, XeF4 and XeO2F2 are respectively.

Find oxidation no. of oxygen, in H_2O and H_2O_{2 }

6. When anion leaves the normal site and electron occupies interstitial site in the crystal lattice it is called what

49. In the reaction between SO2 and O3 the equivalent weight of sulphur dioxide is ??

Find the work done when 5 moles of hydrogen contracts isothermally from 15 L to 5 L against a constant pressure of 1 atm at 250C.

find mole of hydrogen gas required for the production of 10 mole of Ammonia by Haber's process?

Using bond energy data, calculate heat of formation of isoprene 5C(s) + 4H2(g) → H2C=C(CH3)-CH=CH2 Given C-H, H-H, C-C, C=C and C(s)→ C(g) respectively as 98.8 kcal, 104 kcal,83kcal,147 kcal, 171 kcal

The standard heats of formation of CCl4 (g), H2O (g), CO2 (g) and HCl (g) at 298K are−25.5,−57.8,−94.1 and−22.1 kcal mol−1 respectively. ΔH0 (298K) for the reaction CCl4 (g)+2H2O (g)→CO2 (g)+4HCl (g)

Match the following. A.88 g of CO21.0.2 molB.6.022×1023molecules of H2O2.2 molC.5.6 L of O2 at STP3.1 molD.96 g of O24.6.022×1023moleculesE.1 mole of any gas5.3 mol

The pH of the solution obtained by mixing equal volume of solution of pH=3 and pH=4 is: [Given: log55=1.74]

26. In the case of osmosis, solvent molecules movefrom solution having(1) Higher vapour pressure to lower vapourpressure(2) Higher concentration to lower concentration .(3) Lower vapour pressure to higher vapourpressure(4) Higher osmotic pressure to lower osmoticpressure

two solvents A and B having P Ao​ :P Bo​ =2:3 and having molar rati 3 : 2 in a solution, then the molecular fraction of B in vapour phase would be?

In the presence of magnetic field d-suborbit is a-5- fold degenerateb-3-fold degenerate C-7-fold degenerate D-day non degenerate.

How many grams of sulphuric acid will be present in 0.25 mol of sulphuric acid?( atomic mass of S = 32 u and O = 16 u respectively)

What is stoichiometry of reaction

Which of the following is not paramagnetic

Which of the following compound will not show SN1 reaction?

Whta is the oxidation number of the central metal atom in the coordination compound [Pt(NH3)3Cl]Cl?

Which has highest % of hydrogen

Explain how sodium sulphide is isoamorphous with silver sulphide and not with zinc sulphide or sodium nitrite ?

Equal moles of hydrogen and oxygen gases are placed in a container with a pin-hole through which both can escape. What fraction of the oxygen excapes in the time required for one-half of the hydrogen to escape?

The increasing order of reactivity among group 1 elements is Li &lt; Na &lt; K &lt; Rb &lt;Cs whereas that among group 17 elements is F &gt; CI &gt; Br &gt; I. Explain.

What will be the value of nth overtone of 1. open organ pipe 2. closed organ pipe

What is the difference between no. of moles , stoichiometric coefficients and no. of molecules?

When bonded to a carbon atom, which of the following forms the strongest bond?

2. GFC Chain and DFC chain are interconnected with PFC OR not?

How many resonating structures can be drawn for 2,4-pentadienyl radical?

Which of the following reactions does not occur?

Among the following which is most likely unhybridized molecule?(A) PCl3(B) PCl5(C) PH3(D) NH3

two solvents A and B having P Ao :P Bo =2:3 and having molar rati 3 : 2 in a solution, then the molecular fraction of B in vapour phase would be?

The increasing order of reactivity among group 1 elements is Li < Na < K < Rb <Cs whereas that among group 17 elements is F > CI > Br > I. Explain.