46295 + Interview Questions in Chemistry

1.	Among the following, which surfactant will form micelles in aqueous solution at the lowest molar concentration at ambient conditions?[IIT-JEE, 2008]
Answer» Among the following, which surfactant will form micelles in aqueous solution at the lowest molar concentration at ambient conditions? [IIT-JEE, 2008]

1.

Among the following, which surfactant will form micelles in aqueous solution at the lowest molar concentration at ambient conditions?[IIT-JEE, 2008]

Answer»

Among the following, which surfactant will form micelles in aqueous solution at the lowest molar concentration at ambient conditions?

[IIT-JEE, 2008]

Discussion

2.	Arrange the following in increasing order of boiling point:(i) CH3−CH2−CH2−CH2−Br(ii) (CH3)2−CH−CH2−Br(iii) (CH3)2−CH−Br
Answer» Arrange the following in increasing order of boiling point: (i) $C H_{3} - C H_{2} - C H_{2} - C H_{2} - B r$ (ii) $(C H_{3})_{2} - C H - C H_{2} - B r$ (iii) $(C H_{3})_{2} - C H - B r$

Discussion

3.	For the reaction A+3B covert into 2C+D, initial mole of A is twice that of B. If at equilibrium moles of B and C are equal then percent of B reacted is?
Answer» For the reaction A+3B covert into 2C+D, initial mole of A is twice that of B. If at equilibrium moles of B and C are equal then percent of B reacted is?

Discussion

4.	Why is bimolecular dehydration not appropriate for the preparation of ethyl methyl ether?
Answer» Why is bimolecular dehydration not appropriate for the preparation of ethyl methyl ether?

Discussion

5.	The number of aldol reaction(s) that occurs in the given transformation is
Answer» The number of aldol reaction(s) that occurs in the given transformation is

Discussion

6.	If from ZnS unit cell all the atoms are removed from any two body diagonals then what will be the formula?
Answer» If from ZnS unit cell all the atoms are removed from any two body diagonals then what will be the formula?

Discussion

7.	2. How much volume of KCl is involved at N T P from the complete decomposition of 5 gm KClO3
Answer» 2. How much volume of KCl is involved at N T P from the complete decomposition of 5 gm KClO3

Discussion

8.	The given graph in Fig represents the variation of Z (compressibility factor=PVnRT) vs P , for the three real gases A,B and C. identify the only incorrect statement
Answer» The given graph in Fig represents the variation of Z $(c o m p r e s s i b i l i t y f a c t o r = \frac{P V}{n R T}$ ) vs P , for the three real gases A,B and C. identify the only incorrect statement

Discussion

9.	the correct order of acidic character isp4o10>p4o6n2o5>n2o3n2o3>p4o6all of these
Answer» the correct order of acidic character is p4o10>p4o6 n2o5>n2o3 n2o3>p4o6 all of these

Discussion

10.	Which of the following amines will form stable diazonium salt at 273-283 K ?
Answer» Which of the following amines will form stable diazonium salt at 273-283 K ?

Discussion

11.	If solubility product of a sparingly soluble salt, Ag2SO3 is 8×10−14 at 25oC . Calculate the concentration of Ag+(aq) in its saturated solution at equilibrium. Given : 3√20=2.71
Answer» If solubility product of a sparingly soluble salt, $A g_{2} S O_{3}$ is $8 \times 10^{- 14}$ at $25^{o} C$ . Calculate the concentration of $A g^{+} (a q)$ in its saturated solution at equilibrium. Given : $\sqrt[3]{20} = 2.71$

Discussion

12.	What functional group should be given priority while naming an aeromatic or aliphatic compound i different conditions?
Answer» What functional group should be given priority while naming an aeromatic or aliphatic compound i different conditions?

Discussion

13.	What will be the molarity of Cl− ions in an M30 solution of FeCl3?
Answer» What will be the molarity of $C l^{-}$ ions in an $\frac{M}{30}$ solution of $F e C l_{3}$ ?

Discussion

14.	As the s-character of hybridized orbital decreases, the bond angle
Answer» As the s-character of hybridized orbital decreases, the bond angle

14.

As the s-character of hybridized orbital decreases, the bond angle

Answer»

As the s-character of hybridized orbital decreases, the bond angle

Discussion

15.	Which of the following group will show +R effect?
Answer» Which of the following group will show $+ R$ effect?

Discussion

16.	Which of the following has maximum stability
Answer» Which of the following has maximum stability

16.

Which of the following has maximum stability

Answer»

Which of the following has maximum stability

Discussion

17.	What is vacant d orbital concept in pcl5? Please explain
Answer» What is vacant d orbital concept in pcl5? Please explain

Discussion

18.	When alcohols are reacted with magnesium what poduct does it gives
Answer» When alcohols are reacted with magnesium what poduct does it gives

Discussion

19.	In two H-atoms, X and Y, the electrons move around the nucleus in the 1st and 2nd orbits respectively. The ratio of the time taken by them to complete one revolution is:
Answer» In two H-atoms, X and Y, the electrons move around the nucleus in the $1^{s t}$ and $2^{n d}$ orbits respectively. The ratio of the time taken by them to complete one revolution is:

Discussion

20.	Predictthe products of the following reactions:(i) (ii) (iii) (iv)
Answer» Predict the products of the following reactions: (i) (ii) (iii) (iv)

20.

Predictthe products of the following reactions:(i) (ii) (iii) (iv)

Answer»

Predict
the products of the following reactions:

(i)

(ii)

(iii)

(iv)

Discussion

21.	The mobility of metal ions in aqueous medium (Li⊕,Na⊕,K⊕,Rb⊕) in an electric field, follows the order:
Answer» The mobility of metal ions in aqueous medium $(L i^{\oplus}, N a^{\oplus}, K^{\oplus}, R b^{\oplus})$ in an electric field, follows the order:

Discussion

22.	Close packing is maximum in the Crystal which is
Answer» Close packing is maximum in the Crystal which is

Discussion

23.	7.Bond Order of ClO4-
Answer» 7.Bond Order of ClO4-

Discussion

24.	Choose the correct stability order of the given resonating structures :
Answer» Choose the correct stability order of the given resonating structures :

Discussion

25.	What are carbonates and bicarbonates
Answer» What are carbonates and bicarbonates

Discussion

26.	On passing CO2, through concentrated solution of Na2CO3 gives Na2CO3 + H2O + CO2 → ___
Answer» On passing $C O_{2}$ , through concentrated solution of $N a_{2} C O_{3}$ gives $N a_{2} C O_{3} + H_{2} O + C O_{2} \to$ ___

26.

On passing CO2, through concentrated solution of Na2CO3 gives Na2CO3 + H2O + CO2 → ___

Answer»

On passing $C O_{2}$ , through concentrated solution of $N a_{2} C O_{3}$ gives

$N a_{2} C O_{3} + H_{2} O + C O_{2} \to$ ___

Discussion

27.	Following two amino acids liosine and glutamine from dipeptide linkage. What are the two possible dipeptides? (IIT-JEE, 2001)
Answer» Following two amino acids liosine and glutamine from dipeptide linkage. What are the two possible dipeptides? (IIT-JEE, 2001)

Discussion

28.	The given diagram indicates the energy level of a certain atom. When an electron moves from 2E level to E level, a photon of wavelength λ is emitted. The wavelength of photon emitted during its transition from 4E3 level to E level is:____ 2E____4E3____ E
Answer» The given diagram indicates the energy level of a certain atom. When an electron moves from 2E level to E level, a photon of wavelength $λ$ is emitted. The wavelength of photon emitted during its transition from $\frac{4 E}{3}$ level to E level is: ____ $2 E$ ____ $\frac{4 E}{3}$ ____ $E$

Discussion

29.	When copper is heated with conc. HNO3, it produces
Answer» When copper is heated with $c o n c . H N O_{3}$ , it produces

Discussion

30.	Which of the following defects decrase the density ? (a) Interstitial defect (b) Vacancy defect (c) Frenkel defect(d) Schottky defect
Answer» Which of the following defects decrase the density ? (a) Interstitial defect (b) Vacancy defect (c) Frenkel defect(d) Schottky defect

30.

Which of the following defects decrase the density ? (a) Interstitial defect (b) Vacancy defect (c) Frenkel defect(d) Schottky defect

Answer»

Which of the following defects decrase the density ?

(a) Interstitial defect (b) Vacancy defect

(c) Frenkel defect(d) Schottky defect

Discussion

31.	Question 4 (d)Draw the structure of the compound Hexanal.
Answer» Question 4 (d) Draw the structure of the compound Hexanal.

Discussion

32.	An ideal gas of adiabatic exponent y, expands according to law PV= β (where β is positiveconstant). For this process compressibility of thegas is
Answer» An ideal gas of adiabatic exponent y, expands according to law PV= β (where β is positiveconstant). For this process compressibility of thegas is

Discussion

33.	Calculate the enthalpy change on freezing of 1.0 mol of water at 10.0°C to ice at –10.0°C. ΔfusH = 6.03 kJ mol–1 at 0°C.Cp[H2O(l)] = 75.3 J mol–1 K–1Cp[H2O(s)] = 36.8 J mol–1 K–1
Answer» Calculate the enthalpy change on freezing of 1.0 mol of water at 10.0°C to ice at –10.0°C. Δ_fusH = 6.03 kJ mol^–1 at 0°C. C_p[H₂O(l)] = 75.3 J mol^–1 K^–1 C_p[H₂O(s)] = 36.8 J mol^–1 K^–1

33.

Calculate the enthalpy change on freezing of 1.0 mol of water at 10.0°C to ice at –10.0°C. ΔfusH = 6.03 kJ mol–1 at 0°C.Cp[H2O(l)] = 75.3 J mol–1 K–1Cp[H2O(s)] = 36.8 J mol–1 K–1

Answer»

Calculate the enthalpy change on freezing of 1.0 mol of water at 10.0°C to ice at –10.0°C. Δ_fusH = 6.03 kJ mol^–1 at 0°C.

C_p[H₂O(l)] = 75.3 J mol^–1 K^–1

C_p[H₂O(s)] = 36.8 J mol^–1 K^–1

Discussion

34.	The vapour pressure of two pure liquids A and B, that form an ideal solution are 100 and 900 torr respectively at temperature T. This liquid solution of A and B is composed of 1 mole of A and 1 mole of B. What will be the pressure, when 1 mole of mixture has been vaporized?
Answer» The vapour pressure of two pure liquids A and B, that form an ideal solution are $100$ and $900 torr$ respectively at temperature T. This liquid solution of A and B is composed of $1$ mole of A and $1$ mole of B. What will be the pressure, when $1$ mole of mixture has been vaporized?

Discussion

35.	What is pesudo first order reaction?
Answer» What is pesudo first order reaction?

Discussion

36.	The standard free energy change for the given reaction is - 10.26 kcal mol−1 at 25∘C.H2(g)+2AgCl(s)→2Ag(s)+2H+(aq)+2Cl−(aq)A cell using the above reaction is operated at 25∘C under conditions,PH2=1 atm[H+] and [Cl−]=0.1 MCalculate the emf of the cell.
Answer» The standard free energy change for the given reaction is - $10.26 k c a l m o l^{- 1}$ at $25^{\circ} C .$ $H_{2} (g) + 2 A g C l (s) \to 2 A g (s) + 2 H^{+} (a q) + 2 C l^{-} (a q)$ A cell using the above reaction is operated at $25^{\circ} C$ under conditions, $P_{H_{2}} = 1 a t m$ $[H^{+}] and [C l^{-}] = 0.1 M$ Calculate the emf of the cell.

Discussion

37.	Amino acids behave like salts rather than simple amines or carboxylic acids. Explain.
Answer» Amino acids behave like salts rather than simple amines or carboxylic acids. Explain.

Discussion

38.	Are all octahedral voids in a HCP lattice inside the lattics
Answer» Are all octahedral voids in a HCP lattice inside the lattics

Discussion

39.	Which one of the following species cannot act as both Bronsted acid and base? 1)h2o 2)hco3- 3)hso4- 4)nh2- 5)nh3
Answer» Which one of the following species cannot act as both Bronsted acid and base? 1)h2o 2)hco3- 3)hso4- 4)nh2- 5)nh3

Discussion

40.	What is the work function of the metal if a light of wavelength 4000 ∘A generates photoelectrons of velocity 6×105 ms−1 from it?(Mass of electron = 9×10−31 kg, Velocity of light = 3×108 ms−1, Plank's constant = 6.626×10−34 Js, Charge of electron = 1.6×10−19 J eV−1)
Answer» What is the work function of the metal if a light of wavelength $4000 \circ A$ generates photoelectrons of velocity $6 \times 10^{5} {ms}^{- 1}$ from it? (Mass of electron = $9 \times 10^{- 31} kg$ , Velocity of light = $3 \times 10^{8} {ms}^{- 1}$ , Plank's constant = $6.626 \times 10^{- 34} Js$ , Charge of electron = $1.6 \times 10^{- 19} {J eV}^{- 1}$ )

Discussion

41.	WHAT IS THE NUMBER OF SEMINIFEROUS TUBULE IN EACH LOBULE
Answer» WHAT IS THE NUMBER OF SEMINIFEROUS TUBULE IN EACH LOBULE

Discussion

42.	A horizontal tube of length l closed at both the ends contain an ideal gas of molecular mass M. The tube is rotated with angular velocity about a vertical axis passing through an end. If temperature is constant and P1, P2 are pressures at free end and fixed end respectively, then 1) P1
Answer» A horizontal tube of length l closed at both the ends contain an ideal gas of molecular mass M. The tube is rotated with angular velocity about a vertical axis passing through an end. If temperature is constant and P1, P2 are pressures at free end and fixed end respectively, then 1) P1

Discussion

43.	calculate the wave length of electron if its KE is 5KJ
Answer» calculate the wave length of electron if its KE is 5KJ

Discussion

44.	A standing wave is maintained in a homogeneous string of cross section are a and density rho .it is formed by the superposition of two waves travelling in opposite directions given by the equation y1=asin(wt-kx) and y2=2asin(wt+kx) the total mechanical energy confined between the sections corresponding to the adjacent antibodies is
Answer» A standing wave is maintained in a homogeneous string of cross section are a and density rho .it is formed by the superposition of two waves travelling in opposite directions given by the equation y1=asin(wt-kx) and y2=2asin(wt+kx) the total mechanical energy confined between the sections corresponding to the adjacent antibodies is

Discussion

45.	ab has nacl type structure if all the atoms touching one of the triad axis is removed formula of unit cell will be a. A3B2 b. a4b5 c. a6b9 d.ab
Answer» ab has nacl type structure if all the atoms touching one of the triad axis is removed formula of unit cell will be a. A3B2 b. a4b5 c. a6b9 d.ab

Discussion

46.	Which of the following have same bond order?
Answer» Which of the following have same bond order?

Discussion

47.	The amount of energy released when 1012 atoms of Cl vapour are converted to Cl− ions, according to the equation; Cl(g)+e−→Cl−(g) is 58×10−10 J. The magnitude of ΔegH of Cl atom (in kJ mol−1) is
Answer» The amount of energy released when $10^{12}$ atoms of $C l$ vapour are converted to $C l^{-}$ ions, according to the equation; $C l (g) + e^{-} \to C l^{-} (g)$ is $58 \times 10^{- 10} J$ . The magnitude of $Δ_{e g} H$ of $C l$ atom (in $k J m o l^{- 1}$ ) is

Discussion

48.	A certain gas occupies 0.418 litre at $27^{\circ}C$ and 740mm Hg. What is the Volume at S.T.P.?
Answer» A certain gas occupies 0.418 litre at $27^{\circ}C$ and 740mm Hg. What is the Volume at S.T.P.?

Discussion

49.	An electrochemical machining (ECM) is to be used to cut a through hole into a 12 mm thick aluminium plate. The hole has a rectangular cross-section, 10 mm × 30 mm. The ECM operation will be accomplished in 2 minutes, with efficiency of 90%. Assuming specific removal rate for aluminium as 3.44×10−2mm3/(As), the current (in A) required is______ (correct to two decimal places.) 968.992
Answer» An electrochemical machining (ECM) is to be used to cut a through hole into a 12 mm thick aluminium plate. The hole has a rectangular cross-section, 10 mm × 30 mm. The ECM operation will be accomplished in 2 minutes, with efficiency of 90%. Assuming specific removal rate for aluminium as $3.44 \times 10^{- 2} m m^{3} / (A s)$ , the current (in A) required is______ (correct to two decimal places.) 968.992

Discussion

50.	Q 30/30 In an orbit if the time of revolution of asatellite is T, then PE is proportional to
Answer» Q 30/30 In an orbit if the time of revolution of asatellite is T, then PE is proportional to

Discussion

48.	A certain gas occupies 0.418 litre at \(27^{\circ}C\) and 740mm Hg. What is the Volume at S.T.P.?
Answer» A certain gas occupies 0.418 litre at \(27^{\circ}C\) and 740mm Hg. What is the Volume at S.T.P.?

Explore topic-wise InterviewSolutions in Current Affairs.

Among the following, which surfactant will form micelles in aqueous solution at the lowest molar concentration at ambient conditions?[IIT-JEE, 2008]

Arrange the following in increasing order of boiling point:(i) CH3−CH2−CH2−CH2−Br(ii) (CH3)2−CH−CH2−Br(iii) (CH3)2−CH−Br

For the reaction A+3B covert into 2C+D, initial mole of A is twice that of B. If at equilibrium moles of B and C are equal then percent of B reacted is?

Why is bimolecular dehydration not appropriate for the preparation of ethyl methyl ether?

The number of aldol reaction(s) that occurs in the given transformation is

If from ZnS unit cell all the atoms are removed from any two body diagonals then what will be the formula?

2. How much volume of KCl is involved at N T P from the complete decomposition of 5 gm KClO3

The given graph in Fig represents the variation of Z (compressibility factor=PVnRT) vs P , for the three real gases A,B and C. identify the only incorrect statement

the correct order of acidic character isp4o10>p4o6n2o5>n2o3n2o3>p4o6all of these

Which of the following amines will form stable diazonium salt at 273-283 K ?

If solubility product of a sparingly soluble salt, Ag2SO3 is 8×10−14 at 25oC . Calculate the concentration of Ag+(aq) in its saturated solution at equilibrium. Given : 3√20=2.71

What functional group should be given priority while naming an aeromatic or aliphatic compound i different conditions?

What will be the molarity of Cl− ions in an M30 solution of FeCl3?

As the s-character of hybridized orbital decreases, the bond angle

Which of the following group will show +R effect?

Which of the following has maximum stability

What is vacant d orbital concept in pcl5? Please explain

When alcohols are reacted with magnesium what poduct does it gives

In two H-atoms, X and Y, the electrons move around the nucleus in the 1st and 2nd orbits respectively. The ratio of the time taken by them to complete one revolution is:

Predictthe products of the following reactions:(i) (ii) (iii) (iv)

The mobility of metal ions in aqueous medium (Li⊕,Na⊕,K⊕,Rb⊕) in an electric field, follows the order:

Close packing is maximum in the Crystal which is

7.Bond Order of ClO4-

Choose the correct stability order of the given resonating structures :

What are carbonates and bicarbonates

On passing CO2, through concentrated solution of Na2CO3 gives Na2CO3 + H2O + CO2 → ___

Following two amino acids liosine and glutamine from dipeptide linkage. What are the two possible dipeptides? (IIT-JEE, 2001)

The given diagram indicates the energy level of a certain atom. When an electron moves from 2E level to E level, a photon of wavelength λ is emitted. The wavelength of photon emitted during its transition from 4E3 level to E level is:____ 2E____4E3____ E

When copper is heated with conc. HNO3, it produces

Which of the following defects decrase the density ? (a) Interstitial defect (b) Vacancy defect (c) Frenkel defect(d) Schottky defect

Question 4 (d)Draw the structure of the compound Hexanal.

An ideal gas of adiabatic exponent y, expands according to law PV= β (where β is positiveconstant). For this process compressibility of thegas is

Calculate the enthalpy change on freezing of 1.0 mol of water at 10.0°C to ice at –10.0°C. ΔfusH = 6.03 kJ mol–1 at 0°C.Cp[H2O(l)] = 75.3 J mol–1 K–1Cp[H2O(s)] = 36.8 J mol–1 K–1

The vapour pressure of two pure liquids A and B, that form an ideal solution are 100 and 900 torr respectively at temperature T. This liquid solution of A and B is composed of 1 mole of A and 1 mole of B. What will be the pressure, when 1 mole of mixture has been vaporized?

What is pesudo first order reaction?

The standard free energy change for the given reaction is - 10.26 kcal mol−1 at 25∘C.H2(g)+2AgCl(s)→2Ag(s)+2H+(aq)+2Cl−(aq)A cell using the above reaction is operated at 25∘C under conditions,PH2=1 atm[H+] and [Cl−]=0.1 MCalculate the emf of the cell.

Amino acids behave like salts rather than simple amines or carboxylic acids. Explain.

Are all octahedral voids in a HCP lattice inside the lattics

Which one of the following species cannot act as both Bronsted acid and base? 1)h2o 2)hco3- 3)hso4- 4)nh2- 5)nh3

What is the work function of the metal if a light of wavelength 4000 ∘A generates photoelectrons of velocity 6×105 ms−1 from it?(Mass of electron = 9×10−31 kg, Velocity of light = 3×108 ms−1, Plank's constant = 6.626×10−34 Js, Charge of electron = 1.6×10−19 J eV−1)

WHAT IS THE NUMBER OF SEMINIFEROUS TUBULE IN EACH LOBULE

A horizontal tube of length l closed at both the ends contain an ideal gas of molecular mass M. The tube is rotated with angular velocity about a vertical axis passing through an end. If temperature is constant and P1, P2 are pressures at free end and fixed end respectively, then 1) P1

calculate the wave length of electron if its KE is 5KJ

ab has nacl type structure if all the atoms touching one of the triad axis is removed formula of unit cell will be a. A3B2 b. a4b5 c. a6b9 d.ab

Which of the following have same bond order?

The amount of energy released when 1012 atoms of Cl vapour are converted to Cl− ions, according to the equation; Cl(g)+e−→Cl−(g) is 58×10−10 J. The magnitude of ΔegH of Cl atom (in kJ mol−1) is

A certain gas occupies 0.418 litre at \(27^{\circ}C\) and 740mm Hg. What is the Volume at S.T.P.?

Q 30/30 In an orbit if the time of revolution of asatellite is T, then PE is proportional to

The given diagram indicates the energy level of a certain atom. When an electron moves from 2E level to E level, a photon of wavelength λ is emitted. The wavelength of photon emitted during its transition from 4E3 level to E level is: 2E4E3 E