46295 + Interview Questions in Chemistry Page 49 InterviewSolution

2401.	Sucrose hydrolysis in acid solution into glucose and fructose following first order rate law with a half-life of 3.3 h at 25oC. After 9 h, the fraction of sucrose remaining is f. The value of log1f is ×10−2. (Round off to the nearest integer).[Assume: ln10=2.303, ln2=0.693]
Answer» Sucrose hydrolysis in acid solution into glucose and fructose following first order rate law with a half-life of $3.3 h$ at $25^{o} C$ . After $9 h$ , the fraction of sucrose remaining is $f$ . The value of $log \frac{1}{f}$ is $\times 10^{- 2}$ . (Round off to the nearest integer). [Assume: $ln 10 = 2.303, ln 2 = 0.693$ ]

Discussion

2402.	which is more acidic among cyclohexane carboxylic acid and ethanoic acid?
Answer» which is more acidic among cyclohexane carboxylic acid and ethanoic acid?

Discussion

2403.	what is the number of octahdral voids per atom present in a cubic close packed structure
Answer» what is the number of octahdral voids per atom present in a cubic close packed structure

Discussion

2404.	39. The product formed by the reaction of an aldehyde with a primary amine is
Answer» 39. The product formed by the reaction of an aldehyde with a primary amine is

Discussion

2405.	If bond dissociation enthalpy of CH4(g) and C2H6(g) are x and y kJ mol–1 respectively, then the bond dissociation enthalpy of C−C bond (kJ mol–1) will be
Answer» If bond dissociation enthalpy of $C H_{4} (g)$ and $C_{2} H_{6} (g)$ are $x$ and $y {kJ mol}^{- 1}$ respectively, then the bond dissociation enthalpy of $C - C$ bond ( ${kJ mol}^{- 1}$ ) will be

Discussion

2406.	Which among the following groups shows maximum electron withdrawing effect?
Answer» Which among the following groups shows maximum electron withdrawing effect?

Discussion

2407.	The molar conductivity of acetic acid solution at infinite dilution is 390.7. Calculate the moalr conductivity of 0.01M acetic acid solution, given that the dissociation of acetic acid is
Answer» The molar conductivity of acetic acid solution at infinite dilution is 390.7 . Calculate the moalr conductivity of 0.01M acetic acid solution, given that the dissociation of acetic acid is

Discussion

2408.	A vessel contains 100 litres of a liquid X. Heat is supplied to the liquid at a constant pressure of 1 atm in such a fashion that heat given is equal to the change in enthalpy of the system. The volume of the liquid increases by 2 litres. If 202.6 joules of heat were supplied, then the values of △U and △H would have been: [△U=change in internal energy, △H change in enthalpy]
Answer» A vessel contains $100$ litres of a liquid X. Heat is supplied to the liquid at a constant pressure of $1$ atm in such a fashion that heat given is equal to the change in enthalpy of the system. The volume of the liquid increases by $2$ litres. If $202.6$ joules of heat were supplied, then the values of $△ U$ and $△ H$ would have been: $[△ U = change in internal energy, △ H change in enthalpy]$

Discussion

2409.	The carbonyl group has following resonating structure.The correct order of stability of these structures is:
Answer» The carbonyl group has following resonating structure. The correct order of stability of these structures is:

Discussion

2410.	Convert Propene to 1,2-Dibromopropane.
Answer» Convert Propene to 1,2-Dibromopropane.

Discussion

2411.	Find electric potential at the point p as shown in the figure shown assuming (r >>a)Find electric potential at the point p as shown in the figure shown assuming (r >>a)
Answer» Find electric potential at the point p as shown in the figure shown assuming (r >>a) Find electric potential at the point p as shown in the figure shown assuming (r >>a)

Discussion

2412.	Magnesium reacts with an element (X) to form an ionic compound. If the ground state electronic configuration of (X) is 1s2 2s2 2p3, the simplest formula for this compound is:
Answer» Magnesium reacts with an element (X) to form an ionic compound. If the ground state electronic configuration of (X) is $1 s^{2}$ $2 s^{2}$ $2 p^{3}$ , the simplest formula for this compound is:

Discussion

2413.	Enol form is more stable in
Answer» Enol form is more stable in

Discussion

2414.	A nitrogen-hydrogen mixture initially in the molar ratio of 1:3 reached equilibrium to from ammonia when 25% of the N2 and H2 had reacted .If the pressure of the system was 21 atm , the partial pressure of ammonia at the equilibrium was
Answer» A nitrogen-hydrogen mixture initially in the molar ratio of 1:3 reached equilibrium to from ammonia when 25% of the N2 and H2 had reacted .If the pressure of the system was 21 atm , the partial pressure of ammonia at the equilibrium was

Discussion

2415.	Explain the following term with one example: Corrosion.
Answer» Explain the following term with one example: Corrosion.

Discussion

2416.	Electronic configuration of anion in sodium anhydride
Answer» Electronic configuration of anion in sodium anhydride

Discussion

2417.	44. Minimum no. of carbon for secondary amine(CnH2n+3N) to show chain isomerism (a)3 (b)4 (c)6 (d)5
Answer» 44. Minimum no. of carbon for secondary amine(CnH2n+3N) to show chain isomerism (a)3 (b)4 (c)6 (d)5

Discussion

2418.	Consider the following equilibria at 25∘C,2NO(g)⇌N2(g)+O2(g);K1=4×1030and NO(g)+12Br2(g)⇌NOBr(g);K2=1.4 mol−12L12. The value of K_C for the reaction (at same temperature) 12N2(g)+12O2(g)+12Br2(g)⇌NOBr(g) is :
Answer» Consider the following equilibria at $25^{\circ} C, 2 N O_{(g)} ⇌ N_{2 (g)} + O_{2 (g)}; K_{1} = 4 \times 10^{30} a n d N O_{(g)} + \frac{1}{2} B r_{2 (g)} ⇌ N O B r_{(g)}; K_{2} = 1.4 m o l^{- \frac{1}{2}} L^{\frac{1}{2}} .$ The value of K_C for the reaction (at same temperature) $\frac{1}{2} N_{2 (g)} + \frac{1}{2} O_{2 (g)} + \frac{1}{2} B r_{2 (g)} ⇌ N O B r_{(g)}$ is :

Discussion

2419.	What is the end product?
Answer» What is the end product?

Discussion

2420.	The hydrolysis of same amount of an ester was carried out separately with 0.05 (N) HCl and 0.05 (N) H2SO4. Therefore, which of the following is true?
Answer» The hydrolysis of same amount of an ester was carried out separately with $0.05 (N) H C l$ and $0.05 (N) H_{2} S O_{4}$ . Therefore, which of the following is true?

Discussion

2421.	7061.If the percentage error in the measurement ofvelocity of a particle is 50% then the percentageerror in the measuremenl of ts kinetic energy willbe225%(1)125%(2)(3)100%(4) 200%
Answer» 7061.If the percentage error in the measurement ofvelocity of a particle is 50% then the percentageerror in the measuremenl of ts kinetic energy willbe225%(1)125%(2)(3)100%(4) 200%

Discussion

2422.	The catalyst used in the Deacon’s process for the manufacture of chlorine is:
Answer» The catalyst used in the Deacon’s process for the manufacture of chlorine is:

Discussion

2423.	15. Acetic acid undergoes dimerisation in benzene. What will be its van't Hoff factor valure if α is 100%?
Answer» 15. Acetic acid undergoes dimerisation in benzene. What will be its van't Hoff factor valure if α is 100%?

Discussion

2424.	44. Number of columb required to reduce 0.02 mole of benzaldehyde to benzyl alcohol is
Answer» 44. Number of columb required to reduce 0.02 mole of benzaldehyde to benzyl alcohol is

Discussion

2425.	Calculate the amount of 90 percent H2SO4 required for the preparation of 420 kg HCl as per te following equation 2NaCl+H2SO4→ Na2SO4+2HC
Answer» Calculate the amount of 90 percent H2SO4 required for the preparation of 420 kg HCl as per te following equation 2NaCl+H2SO4→ Na2SO4+2HC

Discussion

2426.	Benzene diazonium chloride reacts with methanol gives?
Answer» Benzene diazonium chloride reacts with methanol gives?

Discussion

2427.	When NO and NO2 are mixed, the following equilibria are readily obtained :2NO2⇌N2O4 Kp=6.8 atm−1 and NO+NO2⇌N2O3In an experiment when NO and NO2 are mixed in the ratio of 1:2, the final total pressure was 5.05 atm and the partial pressure of N2O4 was 1.7 atm. Calculate the equilibrium partial pressure of NO in atmosphere :
Answer» When $N O$ and $N O_{2}$ are mixed, the following equilibria are readily obtained : $2 N O_{2} ⇌ N_{2} O_{4} K_{p} = 6.8 a t m^{- 1}$ and $N O + N O_{2} ⇌ N_{2} O_{3}$ In an experiment when $N O$ and $N O_{2}$ are mixed in the ratio of $1 : 2$ , the final total pressure was $5.05 a t m$ and the partial pressure of $N_{2} O_{4}$ was $1.7 a t m$ . Calculate the equilibrium partial pressure of $N O$ in atmosphere :

Discussion

2428.	Which compound cannot exhibit tautomerism?
Answer» Which compound cannot exhibit tautomerism?

Discussion

2429.	In hypobromite reaction of amide, carbonyl carbon atom is lost asA) CO B) CO2C) (CO3)2- D) None of these
Answer» In hypobromite reaction of amide, carbonyl carbon atom is lost as A) CO B) CO2 C) (CO3)2- D) None of these

Discussion

2430.	24.Which of the following isomer having molecular formula C6H14 will give minimum number of monochloro derivatives? 1.Hexane 2. 2 methyl pentane 3. 3 methyl pentane 4. 2, 3 dimethylbutane
Answer» 24.Which of the following isomer having molecular formula C6H14 will give minimum number of monochloro derivatives? 1.Hexane 2. 2 methyl pentane 3. 3 methyl pentane 4. 2, 3 dimethylbutane

Discussion

2431.	The molecule which is not hydrolysed by water at 25oC is:
Answer» The molecule which is not hydrolysed by water at $25^{o} C$ is:

Discussion

2432.	Type: Multiple Correct answers The heat evolved in the combustion of benzene is given by C6H6(l)+15/2O2(g)----------->3H2O(l)+6CO2(g) ∆H=-781.0kcal mol-1 When 156 g of C6H6 is burnt in an open container the amount of heat energy released will be a)150.2 kcal mol-1 b)1562.0 kcal mol-1 c)6528.2 kJ mol-1-1 d)2448.5 kJ mol-1
Answer» Type: Multiple Correct answers The heat evolved in the combustion of benzene is given by C₆H₆(l)+15/2O₂(g)----------->3H₂O(l)+6CO₂(g) ∆H=-781.0kcal mol^-1When 156 g of C₆H₆ is burnt in an open container the amount of heat energy released will be a)150.2 kcal mol^-1 b)1562.0 kcal mol^-1 c)6528.2 kJ mol-1^-1 d)2448.5 kJ mol^-1

Discussion

2433.	is phenyl acetic acid an aromatic carboxylic acid
Answer» is phenyl acetic acid an aromatic carboxylic acid

Discussion

2434.	23. find n factor of the following two reactions 1. kclo3 -----> kcl + 3/2 O2, find n factor of Kclo3 2. (NH4)2Cr2 O7 --------> N2 + Cr2O3+ H2O, find n factor of (NH4)2Cr2O7
Answer» 23. find n factor of the following two reactions 1. kclo3 -----> kcl + 3/2 O2, find n factor of Kclo3 2. (NH4)2Cr2 O7 --------> N2 + Cr2O3+ H2O, find n factor of (NH4)2Cr2O7

Discussion

2435.	Which is more reactive in nucleophilic substitution chlorobenzene and chloroethane and why?
Answer» Which is more reactive in nucleophilic substitution chlorobenzene and chloroethane and why?

Discussion

2436.	The volume strength is 11.2 V and density is 1.05g/ml for 500ml H2O3 solution then what is w/w% of H2O2 solution
Answer» The volume strength is 11.2 V and density is 1.05g/ml for 500ml H2O3 solution then what is w/w% of H2O2 solution

Discussion

2437.	How many spherical units belong to the unit cell of hcp ?
Answer» How many spherical units belong to the unit cell of hcp ?

Discussion

2438.	The structure and hybridization of Si (CH3)4 is:
Answer» The structure and hybridization of Si $(C H_{3})_{4}$ is:

Discussion

2439.	44.Arrange phenol (1), para cresol (2), meta nitrophenol (3)and para nitrophenol (4) in order of decreasing acidity
Answer» 44.Arrange phenol (1), para cresol (2), meta nitrophenol (3)and para nitrophenol (4) in order of decreasing acidity

Discussion

2440.	what is perkin condensesation reaction?
Answer» what is perkin condensesation reaction?

Discussion

2441.	Name the monomer of nylon-6:
Answer» Name the monomer of nylon-6:

Discussion

2442.	When a metal forms BCC lattice,if atoms belonging to one of the C_3 axis are removed from the lattice then the number of atoms per unit cell are?
Answer» When a metal forms BCC lattice,if atoms belonging to one of the C_3 axis are removed from the lattice then the number of atoms per unit cell are?

Discussion

2443.	Difference between Reaction Quotion and equilibrium cons†an t,?
Answer» Difference between Reaction Quotion and equilibrium cons†an t,?

Discussion

2444.	Explain Diel's Alder reaction with mechanism
Answer» Explain Diel's Alder reaction with mechanism

Discussion

2445.	Four particles each of mass m are placed at the corners of a square of side length l.The radius ofgyration of the system about an axis perpendicularto the square and passing through centre is 1) l /\sqrt2 2) l/2 3)l 4)l\sqrt{
Answer» Four particles each of mass m are placed at the corners of a square of side length l.The radius ofgyration of the system about an axis perpendicularto the square and passing through centre is 1) l /\sqrt2 2) l/2 3)l 4)l\sqrt{

Discussion

2446.	thermal stability of sulphates of group 2.
Answer» thermal stability of sulphates of group 2.

Discussion

2447.	The enthalpy of neutralisation of HCl by NaOH is -57.1 kJ mol^- and that of HCN by NaOH is -12.1 kJmol^- .The enthalpy of ionisation of HCN is :
Answer» The enthalpy of neutralisation of HCl by NaOH is -57.1 kJ mol^- and that of HCN by NaOH is -12.1 kJmol^- .The enthalpy of ionisation of HCN is :

Discussion

2448.	An ordinary glass bottle cracks when boiling water is poured into it, but a borosilicate glass bottle does not.
Answer» An ordinary glass bottle cracks when boiling water is poured into it, but a borosilicate glass bottle does not.

Discussion

2449.	At 1127 K and 1 atm pressure, a gaseous mixture of CO and CO2 in equilibrium with solid carbon has 90.55% CO by mass C(s)+CO2(g)↔2CO(g) Calculate Kc for this reaction at the above temperature.
Answer» At 1127 K and 1 atm pressure, a gaseous mixture of CO and $C O_{2}$ in equilibrium with solid carbon has 90.55% CO by mass $C (s) + C O_{2} (g) \leftrightarrow 2 C O (g)$ Calculate $K_{c}$ for this reaction at the above temperature.

Discussion

2450.	If an atom has electronic configuration 1s22s22p63s23p63d104s2 it will be placed in?
Answer» If an atom has electronic configuration $1 s^{2} 2 s^{2} 2 p^{6} 3 s^{2} 3 p^{6} 3 d^{10} 4 s^{2}$ it will be placed in?

Discussion

Explore topic-wise InterviewSolutions in .

Sucrose hydrolysis in acid solution into glucose and fructose following first order rate law with a half-life of 3.3 h at 25oC. After 9 h, the fraction of sucrose remaining is f. The value of log1f is ×10−2. (Round off to the nearest integer).[Assume: ln10=2.303, ln2=0.693]

which is more acidic among cyclohexane carboxylic acid and ethanoic acid?

what is the number of octahdral voids per atom present in a cubic close packed structure

39. The product formed by the reaction of an aldehyde with a primary amine is

If bond dissociation enthalpy of CH4(g) and C2H6(g) are x and y kJ mol–1 respectively, then the bond dissociation enthalpy of C−C bond (kJ mol–1) will be

Which among the following groups shows maximum electron withdrawing effect?

The molar conductivity of acetic acid solution at infinite dilution is 390.7. Calculate the moalr conductivity of 0.01M acetic acid solution, given that the dissociation of acetic acid is

The carbonyl group has following resonating structure.The correct order of stability of these structures is:

Convert Propene to 1,2-Dibromopropane.

Find electric potential at the point p as shown in the figure shown assuming (r >>a)Find electric potential at the point p as shown in the figure shown assuming (r >>a)

Magnesium reacts with an element (X) to form an ionic compound. If the ground state electronic configuration of (X) is 1s2 2s2 2p3, the simplest formula for this compound is:

Enol form is more stable in

A nitrogen-hydrogen mixture initially in the molar ratio of 1:3 reached equilibrium to from ammonia when 25% of the N2 and H2 had reacted .If the pressure of the system was 21 atm , the partial pressure of ammonia at the equilibrium was

Explain the following term with one example: Corrosion.

Electronic configuration of anion in sodium anhydride

44. Minimum no. of carbon for secondary amine(CnH2n+3N) to show chain isomerism (a)3 (b)4 (c)6 (d)5

Consider the following equilibria at 25∘C,2NO(g)⇌N2(g)+O2(g);K1=4×1030and NO(g)+12Br2(g)⇌NOBr(g);K2=1.4 mol−12L12. The value of K_C for the reaction (at same temperature) 12N2(g)+12O2(g)+12Br2(g)⇌NOBr(g) is :

What is the end product?

The hydrolysis of same amount of an ester was carried out separately with 0.05 (N) HCl and 0.05 (N) H2SO4. Therefore, which of the following is true?

7061.If the percentage error in the measurement ofvelocity of a particle is 50% then the percentageerror in the measuremenl of ts kinetic energy willbe225%(1)125%(2)(3)100%(4) 200%

The catalyst used in the Deacon’s process for the manufacture of chlorine is:

15. Acetic acid undergoes dimerisation in benzene. What will be its van't Hoff factor valure if α is 100%?

44. Number of columb required to reduce 0.02 mole of benzaldehyde to benzyl alcohol is

Calculate the amount of 90 percent H2SO4 required for the preparation of 420 kg HCl as per te following equation 2NaCl+H2SO4→ Na2SO4+2HC

Benzene diazonium chloride reacts with methanol gives?

Which compound cannot exhibit tautomerism?

In hypobromite reaction of amide, carbonyl carbon atom is lost asA) CO B) CO2C) (CO3)2- D) None of these

24.Which of the following isomer having molecular formula C6H14 will give minimum number of monochloro derivatives? 1.Hexane 2. 2 methyl pentane 3. 3 methyl pentane 4. 2, 3 dimethylbutane

The molecule which is not hydrolysed by water at 25oC is:

is phenyl acetic acid an aromatic carboxylic acid

23. find n factor of the following two reactions 1. kclo3 -----> kcl + 3/2 O2, find n factor of Kclo3 2. (NH4)2Cr2 O7 --------> N2 + Cr2O3+ H2O, find n factor of (NH4)2Cr2O7

Which is more reactive in nucleophilic substitution chlorobenzene and chloroethane and why?

The volume strength is 11.2 V and density is 1.05g/ml for 500ml H2O3 solution then what is w/w% of H2O2 solution

How many spherical units belong to the unit cell of hcp ?

The structure and hybridization of Si (CH3)4 is:

44.Arrange phenol (1), para cresol (2), meta nitrophenol (3)and para nitrophenol (4) in order of decreasing acidity

what is perkin condensesation reaction?

Name the monomer of nylon-6:

When a metal forms BCC lattice,if atoms belonging to one of the C_3 axis are removed from the lattice then the number of atoms per unit cell are?

Difference between Reaction Quotion and equilibrium cons†an t,?

Explain Diel's Alder reaction with mechanism

Four particles each of mass m are placed at the corners of a square of side length l.The radius ofgyration of the system about an axis perpendicularto the square and passing through centre is 1) l /\sqrt2 2) l/2 3)l 4)l\sqrt{

thermal stability of sulphates of group 2.

The enthalpy of neutralisation of HCl by NaOH is -57.1 kJ mol^- and that of HCN by NaOH is -12.1 kJmol^- .The enthalpy of ionisation of HCN is :

An ordinary glass bottle cracks when boiling water is poured into it, but a borosilicate glass bottle does not.

At 1127 K and 1 atm pressure, a gaseous mixture of CO and CO2 in equilibrium with solid carbon has 90.55% CO by mass C(s)+CO2(g)↔2CO(g) Calculate Kc for this reaction at the above temperature.

If an atom has electronic configuration 1s22s22p63s23p63d104s2 it will be placed in?