46295 + Interview Questions in Chemistry

1.	Which of the following is an equivalent cyclic process corresponding to the thermodynamic cyclic given in the figure?Where, 1→2 is adiabatic.(Graphs are schematic and are not to scale)
Answer» Which of the following is an equivalent cyclic process corresponding to the thermodynamic cyclic given in the figure? Where, $1 \to 2$ is adiabatic. (Graphs are schematic and are not to scale)

Discussion

2.	What do you understand by (i) electron-deficient, (ii) electron-precise, and (iii) electron-rich compounds of hydrogen? Provide justification with suitable examples.
Answer» What do you understand by (i) electron-deficient, (ii) electron-precise, and (iii) electron-rich compounds of hydrogen? Provide justification with suitable examples.

Discussion

3.	What can be concluded about the values of △H and △S from this graph?
Answer» What can be concluded about the values of $△ H$ and $△ S$ from this graph?

Discussion

4.	Choose the eclipsed conformations from among the following.
Answer» Choose the eclipsed conformations from among the following.

Discussion

5.	The equilibrium constant for the following reaction is1.6\times 10^5 at 1024 K. H2(g)+Br2(g)↔2HBr(g) Find the equilibrium pressure of all gases if 10.0 bar of HBr is introduced into a sealed container at 1024 K.
Answer» The equilibrium constant for the following reaction is1.6\times 10^5 at 1024 K. $H_{2} (g) + B r_{2} (g) \leftrightarrow 2 H B r (g)$ Find the equilibrium pressure of all gases if 10.0 bar of HBr is introduced into a sealed container at 1024 K.

Discussion

6.	Calculate the vapour pressure lowering caused by addition of 50 g of sucrose (molecular mass = 342) to 500 g water, if the vapour pressure of pure water at 25oC is 23.8 mm Hg.
Answer» Calculate the vapour pressure lowering caused by addition of $50 g$ of sucrose $(molecular mass = 342)$ to $500 g$ water, if the vapour pressure of pure water at $25^{o} C$ is $23.8 mm Hg$ .

Discussion

7.

For the decomposition of azoisopropane to hexane and nitrogen at543 K, the following data are obtained. t (sec) P(mm of Hg) 0 35.0 360 54.0 720 63.0 Calculate the rate constant.

Answer»

For the decomposition of azoisopropane to hexane and nitrogen at
543 K, the following data are obtained.

t (sec)	P(mm of Hg)
0	35.0
360	54.0
720	63.0

Calculate the rate constant.

Discussion

8.	5.500ml of a hydrocarbon on burning in excess of O2 gave 3000ml of CO2 and 3 l of water vapour .what is formula of hydrocarbon
Answer» 5.500ml of a hydrocarbon on burning in excess of O2 gave 3000ml of CO2 and 3 l of water vapour .what is formula of hydrocarbon

Discussion

9.	the amount ofzinc required to produce 224ml of hydrogen at stp on treatment with dilute sulphuric acid will be
Answer» the amount ofzinc required to produce 224ml of hydrogen at stp on treatment with dilute sulphuric acid will be

Discussion

10.	How is a plastic item made of polyethene different from a plastic item made of melamine?
Answer» How is a plastic item made of polyethene different from a plastic item made of melamine?

Discussion

11.	47. Is the z w i t t e r i o n of sulphanilic acid is soluble in alkaline solution?
Answer» 47. Is the z w i t t e r i o n of sulphanilic acid is soluble in alkaline solution?

Discussion

12.	In order to prepare a buffer solution of pH 5.74, sodium acetate is added to acetic acid. If the concentration of acetic acid in the buffer is 1.0 M, the concentration of sodium acetate in the buffer is ______M. (Round off to the Nearest Integer).[Given: pKa (acetic acid) = 4.74]
Answer» In order to prepare a buffer solution of pH 5.74, sodium acetate is added to acetic acid. If the concentration of acetic acid in the buffer is 1.0 M, the concentration of sodium acetate in the buffer is ______M. (Round off to the Nearest Integer). [Given: $p K_{a}$ (acetic acid) = 4.74]

Discussion

13.	Why is Oxidation state in amalgams is zero for Hg?
Answer» Why is Oxidation state in amalgams is zero for Hg?

Discussion

14.	The equation of state of a certain gas is (k is constant)v=RTP+kRTThen the value of k for the process of throttling of gas from initial pressure P1 and temperature T1 to final pressure P2 and tempertaure T2 is
Answer» The equation of state of a certain gas is (k is constant) $v = \frac{R T}{P} + \frac{k}{R T}$ Then the value of k for the process of throttling of gas from initial pressure $P_{1}$ and temperature $T_{1}$ to final pressure $P_{2}$ and tempertaure $T_{2}$ is

Discussion

15.	What is or gate and truth table?
Answer» What is or gate and truth table?

Discussion

16.	What is the hybridization of H4P2O5?
Answer» What is the hybridization of H4P2O5?

Discussion

17.	Pure chloroform is obtained by treating (i) Ethanol with bleaching powder (ii) Acetone with bleaching powder (iii) Chloral with Sodium hydroxide (iv) CCl4 with moist Iron
Answer» Pure chloroform is obtained by treating (i) Ethanol with bleaching powder (ii) Acetone with bleaching powder (iii) Chloral with Sodium hydroxide (iv) CCl4 with moist Iron

Discussion

18.	Why is the stabilty of +5 OS in p block elements decreases down the group?
Answer» Why is the stabilty of +5 OS in p block elements decreases down the group?

Discussion

19.	For the reaction A(g)⇌B(g)at 495K,ΔrGo=−9.478 kJmol−1. If we start reaction in a closed container at 495 K with 22 millimoles of A, the amount of B is the equilibrium mixture is .....millimoles. (Round off to the Nearest integer). [R8.314Jmol−1K−1;]~ln10=2.303]
Answer» For the reaction $A (g) ⇌ B (g) a t 495 K, Δ r G^{o} = - 9.478 k J m o l^{- 1}$ . If we start reaction in a closed container at 495 K with 22 millimoles of A, the amount of B is the equilibrium mixture is .....millimoles. (Round off to the Nearest integer). [R $8.314 J m o l^{- 1} K^{- 1};$ ]~ln10=2.303]

Discussion

20.	ntP2O5 on treatment with exces s of H2O followed by excess of NH4OH forms (NH4)2HPO4. If hundred gram of (NH4)2HPO4 is formed then find out the mass of p 2 o5 initial takenn
Answer» ntP2O5 on treatment with exces s of H2O followed by excess of NH4OH forms (NH4)2HPO4. If hundred gram of (NH4)2HPO4 is formed then find out the mass of p 2 o5 initial takenn

Discussion

21.	9. 4 moles of each of SO2 and O2 gases are allowed to react to form SO3 in a closed vessel.At equilibrium,25% O2 is used up.The total number of moles of all gases at equilibrium is
Answer» 9. 4 moles of each of SO2 and O2 gases are allowed to react to form SO3 in a closed vessel.At equilibrium,25% O2 is used up.The total number of moles of all gases at equilibrium is

Discussion

22.	Non-stick cookwares, generally have a coating of a polymer whose monomer is:
Answer» Non-stick cookwares, generally have a coating of a polymer whose monomer is:

Discussion

23.	In which of the following the repulsion is least?
Answer» In which of the following the repulsion is least?

Discussion

24.	In benzaldehyde and propanal,which one is more reactive towards nucleophilic addition reaction.give reasons
Answer» In benzaldehyde and propanal,which one is more reactive towards nucleophilic addition reaction.give reasons

Discussion

25.	Which category of the synthetic detergents is used in toothpaste?
Answer» Which category of the synthetic detergents is used in toothpaste?

Discussion

26.	An oil drop of 12 excess electrons is held stationary under a constant electric field of 2.5510^4 NC^-1(Millikan's oil drop experiment). The density of oil is 1.26 g cm^-3. Estimate the radius of the drop.(g=9.81 m s^-2, e= 1.6010^-19 C)
Answer» An oil drop of 12 excess electrons is held stationary under a constant electric field of 2.5510^4 NC^-1(Millikan's oil drop experiment). The density of oil is 1.26 g cm^-3. Estimate the radius of the drop.(g=9.81 m s^-2, e= 1.6010^-19 C)

Discussion

27.	NaCl forms an ionic crystal in which Cl- ions forms CCP lattice. The number of Na+ ions present at a distance of √5 A/2 from Cl- ion at the corner is
Answer» NaCl forms an ionic crystal in which Cl- ions forms CCP lattice. The number of Na+ ions present at a distance of √5 A/2 from Cl- ion at the corner is

Discussion

28.	Suggestreasons why the B–F bond lengths in BF3(130 pm) and (143pm) differ.
Answer» Suggest reasons why the B–F bond lengths in BF₃ (130 pm) and (143 pm) differ.

Discussion

29.	what is wave function/atomic orbital?
Answer» what is wave function/atomic orbital?

Discussion

30.	At 27^° C , the combustion of ethane takes place according to the reaction C_2H_{6(g)} + 7/2 O_{2(g)}→2CO_{2(g)} +3H_2O_{(l)} △ E-△ H for this reactio at 27^° C will be a) +1247.1J b) -1247.1J c) -6235.5J d) +6235.5
Answer» At 27^° C , the combustion of ethane takes place according to the reaction C_2H_{6(g)} + 7/2 O_{2(g)}→2CO_{2(g)} +3H_2O_{(l)} △ E-△ H for this reactio at 27^° C will be a) +1247.1J b) -1247.1J c) -6235.5J d) +6235.5

Discussion

31.	Out of sec propyl chloride and isopropyl chloride , which common name is preferred more and why?
Answer» Out of sec propyl chloride and isopropyl chloride , which common name is preferred more and why?

Discussion

32.	Which of the following compounds most readily undergoes SN1 reaction?[0.77 Mark]
Answer» Which of the following compounds most readily undergoes $S_{N} 1$ reaction? [0.77 Mark]

Discussion

33.	Given that the partial vapour pressure of water is 611.657 Pa. The triple point of water is
Answer» Given that the partial vapour pressure of water is 611.657 Pa. The triple point of water is

Discussion

34.	Define thermoplastics and thermosetting polymers with two examples of each.
Answer» Define thermoplastics and thermosetting polymers with two examples of each.

Discussion

35.	41. Identify product when (R)- and (S)-2-butanol reacts with (RR) tartaric acid in acidicmedium(a) Racemic(c) Meso(b) Diastereomer(d) Pure enantiomer
Answer» 41. Identify product when (R)- and (S)-2-butanol reacts with (RR) tartaric acid in acidicmedium(a) Racemic(c) Meso(b) Diastereomer(d) Pure enantiomer

Discussion

36.	Which of the following compound is not obtained when the products obtained from the electrolysis of brine are mixed? A)nacl B)H2 c)naocl d)cl2
Answer» Which of the following compound is not obtained when the products obtained from the electrolysis of brine are mixed? A)nacl B)H2 c)naocl d)cl2

Discussion

37.	For the given disproportionation reaction: H3PO2→PH3+H3PO3 The equivalent mass of H3PO2 is : Given : Atomic mass of P=31 u
Answer» For the given disproportionation reaction: $H_{3} P O_{2} \to P H_{3} + H_{3} P O_{3}$ The equivalent mass of $H_{3} P O_{2}$ is : Given : $Atomic mass of P = 31 u$

Discussion

38.	The percentage of ammonia obtainable, if equilibrium were to be established during the Haber’s process, is plotted against the operating pressure for the two temperatures, 400°C and 500°C. Which of the following graph correctly represents the process?
Answer» The percentage of ammonia obtainable, if equilibrium were to be established during the Haber’s process, is plotted against the operating pressure for the two temperatures, 400°C and 500°C. Which of the following graph correctly represents the process?

Discussion

39.	Laboratory ammonia is 15.2 M NH3 (aqueous) with a density of 0.8980 g/mL. Mole fraction of NH3 in this solution is
Answer» Laboratory ammonia is $15.2 M$ $N H_{3}$ (aqueous) with a density of $0.8980 g / m L$ . Mole fraction of $N H_{3}$ in this solution is

Discussion

40.	10. 1 m aq. solution of a salt shows elevation iin boiling point equal to 3 times of its K Determine() Freezing point of solution(ii) Osmotic pressure at 27 CKwater) 1.86 K kg mole-1
Answer» 10. 1 m aq. solution of a salt shows elevation iin boiling point equal to 3 times of its K Determine() Freezing point of solution(ii) Osmotic pressure at 27 CKwater) 1.86 K kg mole-1

Discussion

41.	Theequilibrium constant expression for a gas reaction is,Writethe balanced chemical equation corresponding to this expression.
Answer» The equilibrium constant expression for a gas reaction is, Write the balanced chemical equation corresponding to this expression.

41.

Theequilibrium constant expression for a gas reaction is,Writethe balanced chemical equation corresponding to this expression.

Answer»

The
equilibrium constant expression for a gas reaction is,

Write
the balanced chemical equation corresponding to this expression.

Discussion

42.	2 moles of He gas (γ=53) are initially at a temperature of 27∘C and occupy a volume of 20 L. The gas is first expanded at constant pressure untill the volume is double, then undergoes reversible adiabatic change until the temperature returns to its initial value. What will be the final volume of gas in liters? (take 21.5=2.82)
Answer» $2$ moles of $H e$ gas $(γ = \frac{5}{3})$ are initially at a temperature of $27^{\circ} C$ and occupy a volume of $20 L$ . The gas is first expanded at constant pressure untill the volume is double, then undergoes reversible adiabatic change until the temperature returns to its initial value. What will be the final volume of gas in liters? (take $2^{1.5} = 2.82$ )

Discussion

43.	(a) It is known that density ρ of air decreases with height y as Where = 1.25 kg m–3 is the density at sea level, and y0 is a constant. This density variation is called the law of atmospheres. Obtain this law assuming that the temperature of atmosphere remains a constant (isothermal conditions). Also assume that the value of gremains constant.(b) A large He balloon of volume 1425 m3 is used to lift a payload of 400 kg. Assume that the balloon maintains constant radius as it rises. How high does it rise?[Take y0= 8000 m and = 0.18 kg m–3].
Answer» (a) It is known that density ρ of air decreases with height y as Where = 1.25 kg m^–3 is the density at sea level, and y₀ is a constant. This density variation is called the law of atmospheres. Obtain this law assuming that the temperature of atmosphere remains a constant (isothermal conditions). Also assume that the value of gremains constant. (b) A large He balloon of volume 1425 m³ is used to lift a payload of 400 kg. Assume that the balloon maintains constant radius as it rises. How high does it rise? [Take y₀= 8000 m and = 0.18 kg m^–3].

43.

(a) It is known that density ρ of air decreases with height y as Where = 1.25 kg m–3 is the density at sea level, and y0 is a constant. This density variation is called the law of atmospheres. Obtain this law assuming that the temperature of atmosphere remains a constant (isothermal conditions). Also assume that the value of gremains constant.(b) A large He balloon of volume 1425 m3 is used to lift a payload of 400 kg. Assume that the balloon maintains constant radius as it rises. How high does it rise?[Take y0= 8000 m and = 0.18 kg m–3].

Answer»

(a) It is known that density ρ of air decreases with height y as

Where = 1.25 kg m^–3 is the density at sea level, and y₀ is a constant. This density variation is called the law of atmospheres. Obtain this law assuming that the temperature of atmosphere remains a constant (isothermal conditions). Also assume that the value of gremains constant.

(b) A large He balloon of volume 1425 m³ is used to lift a payload of 400 kg. Assume that the balloon maintains constant radius as it rises. How high does it rise?

[Take y₀= 8000 m and = 0.18 kg m^–3].

Discussion

44.	59.The dimensions of a rectangular block with Vermeer calliper having least count 0.1mm 5.0mm×10.0mm×10.0mm the maximum percentage error in the measurement of volume of the block is
Answer» 59.The dimensions of a rectangular block with Vermeer calliper having least count 0.1mm 5.0mm×10.0mm×10.0mm the maximum percentage error in the measurement of volume of the block is

Discussion

45.	0.0833 mol of a carbohydrate of empirical formula CH2O contain 1 g of hydrogen. The molecular formula of the carbohydrate is:
Answer» 0.0833 mol of a carbohydrate of empirical formula $C H_{2} O$ contain $1 g$ of hydrogen. The molecular formula of the carbohydrate is:

Discussion

46.	A circular plasmid of 10, 000 base pairs (bp) is digested with two restriction enzymes A & B, to produce a 3000 BP & 2000 bp bands when visualised on an agarose gel. When digested with one enzymes at a time, only one band is visible at 5000 bp. If the first site for enzyme A(A1) is present at the 100th base, in order in which the remaining sites (A2, B1, B2) are present in it A) 3100,5100,8100 B) 8100 3100,5100 C) 5100,3100,8100 D) 8100,5100,3100
Answer» A circular plasmid of 10, 000 base pairs (bp) is digested with two restriction enzymes A & B, to produce a 3000 BP & 2000 bp bands when visualised on an agarose gel. When digested with one enzymes at a time, only one band is visible at 5000 bp. If the first site for enzyme A(A1) is present at the 100th base, in order in which the remaining sites (A2, B1, B2) are present in it A) 3100,5100,8100 B) 8100 3100,5100 C) 5100,3100,8100 D) 8100,5100,3100

Discussion

47.	A certain oxide of metal M crystallizes in such a way that O2− ions adopt an HCP arrangement that follows the ABABAB pattern. The metal ions, occupy 23rd of the octahedral voids. The formula of the compound is:
Answer» A certain oxide of metal M crystallizes in such a way that $O^{2 -}$ ions adopt an HCP arrangement that follows the ABABAB pattern. The metal ions, occupy $\frac{2}{3} r d$ of the octahedral voids. The formula of the compound is:

Discussion

48.	The resistance of a conductivity cell containing 0.001 M KCl solution at 298 K is 1500 Ω. What is the cell constant if conductivity of 0.001 M KCl solution at 298 K is 0.146×10−3 S cm−1.
Answer» The resistance of a conductivity cell containing $0.001 M K C l$ solution at $298 K$ is $1500 Ω$ . What is the cell constant if conductivity of $0.001 M K C l$ solution at $298 K$ is $0.146 \times 10^{- 3} S c m^{- 1}$ .

Discussion

49.	65.Four metallic plates each with a surface area of one side A are placed at a distance d from each other as shown in figure.Then the capacitance of the system between X and Y is
Answer» 65.Four metallic plates each with a surface area of one side A are placed at a distance d from each other as shown in figure.Then the capacitance of the system between X and Y is

Discussion

50.	10 What is the IUPAC name of m-ClCH2C6H4CH2C(CH3)3
Answer» 10 What is the IUPAC name of m-ClCH2C6H4CH2C(CH3)3

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Which of the following is an equivalent cyclic process corresponding to the thermodynamic cyclic given in the figure?Where, 1→2 is adiabatic.(Graphs are schematic and are not to scale)

What do you understand by (i) electron-deficient, (ii) electron-precise, and (iii) electron-rich compounds of hydrogen? Provide justification with suitable examples.

What can be concluded about the values of △H and △S from this graph?

Choose the eclipsed conformations from among the following.

The equilibrium constant for the following reaction is1.6\times 10^5 at 1024 K. H2(g)+Br2(g)↔2HBr(g) Find the equilibrium pressure of all gases if 10.0 bar of HBr is introduced into a sealed container at 1024 K.

Calculate the vapour pressure lowering caused by addition of 50 g of sucrose (molecular mass = 342) to 500 g water, if the vapour pressure of pure water at 25oC is 23.8 mm Hg.

For the decomposition of azoisopropane to hexane and nitrogen at543 K, the following data are obtained. t (sec) P(mm of Hg) 0 35.0 360 54.0 720 63.0 Calculate the rate constant.

5.500ml of a hydrocarbon on burning in excess of O2 gave 3000ml of CO2 and 3 l of water vapour .what is formula of hydrocarbon

the amount ofzinc required to produce 224ml of hydrogen at stp on treatment with dilute sulphuric acid will be

How is a plastic item made of polyethene different from a plastic item made of melamine?

47. Is the z w i t t e r i o n of sulphanilic acid is soluble in alkaline solution?

In order to prepare a buffer solution of pH 5.74, sodium acetate is added to acetic acid. If the concentration of acetic acid in the buffer is 1.0 M, the concentration of sodium acetate in the buffer is ______M. (Round off to the Nearest Integer).[Given: pKa (acetic acid) = 4.74]

Why is Oxidation state in amalgams is zero for Hg?

The equation of state of a certain gas is (k is constant)v=RTP+kRTThen the value of k for the process of throttling of gas from initial pressure P1 and temperature T1 to final pressure P2 and tempertaure T2 is

What is or gate and truth table?

What is the hybridization of H4P2O5?

Pure chloroform is obtained by treating (i) Ethanol with bleaching powder (ii) Acetone with bleaching powder (iii) Chloral with Sodium hydroxide (iv) CCl4 with moist Iron

Why is the stabilty of +5 OS in p block elements decreases down the group?

For the reaction A(g)⇌B(g)at 495K,ΔrGo=−9.478 kJmol−1. If we start reaction in a closed container at 495 K with 22 millimoles of A, the amount of B is the equilibrium mixture is .....millimoles. (Round off to the Nearest integer). [R8.314Jmol−1K−1;]~ln10=2.303]

ntP2O5 on treatment with exces s of H2O followed by excess of NH4OH forms (NH4)2HPO4. If hundred gram of (NH4)2HPO4 is formed then find out the mass of p 2 o5 initial takenn

9. 4 moles of each of SO2 and O2 gases are allowed to react to form SO3 in a closed vessel.At equilibrium,25% O2 is used up.The total number of moles of all gases at equilibrium is

Non-stick cookwares, generally have a coating of a polymer whose monomer is:

In which of the following the repulsion is least?

In benzaldehyde and propanal,which one is more reactive towards nucleophilic addition reaction.give reasons

Which category of the synthetic detergents is used in toothpaste?

An oil drop of 12 excess electrons is held stationary under a constant electric field of 2.55*10^4 NC^-1(Millikan's oil drop experiment). The density of oil is 1.26 g cm^-3. Estimate the radius of the drop.(g=9.81 m s^-2, e= 1.60*10^-19 C)

NaCl forms an ionic crystal in which Cl- ions forms CCP lattice. The number of Na+ ions present at a distance of √5 A/2 from Cl- ion at the corner is

Suggestreasons why the B–F bond lengths in BF3(130 pm) and (143pm) differ.

what is wave function/atomic orbital?

At 27^° C , the combustion of ethane takes place according to the reaction C_2H_{6(g)} + 7/2 O_{2(g)}→2CO_{2(g)} +3H_2O_{(l)} △ E-△ H for this reactio at 27^° C will be a) +1247.1J b) -1247.1J c) -6235.5J d) +6235.5

Out of sec propyl chloride and isopropyl chloride , which common name is preferred more and why?

Which of the following compounds most readily undergoes SN1 reaction?[0.77 Mark]

Given that the partial vapour pressure of water is 611.657 Pa. The triple point of water is

Define thermoplastics and thermosetting polymers with two examples of each.

41. Identify product when (R)- and (S)-2-butanol reacts with (RR) tartaric acid in acidicmedium(a) Racemic(c) Meso(b) Diastereomer(d) Pure enantiomer

Which of the following compound is not obtained when the products obtained from the electrolysis of brine are mixed? A)nacl B)H2 c)naocl d)cl2

For the given disproportionation reaction: H3PO2→PH3+H3PO3 The equivalent mass of H3PO2 is : Given : Atomic mass of P=31 u

The percentage of ammonia obtainable, if equilibrium were to be established during the Haber’s process, is plotted against the operating pressure for the two temperatures, 400°C and 500°C. Which of the following graph correctly represents the process?

Laboratory ammonia is 15.2 M NH3 (aqueous) with a density of 0.8980 g/mL. Mole fraction of NH3 in this solution is

10. 1 m aq. solution of a salt shows elevation iin boiling point equal to 3 times of its K Determine() Freezing point of solution(ii) Osmotic pressure at 27 CKwater) 1.86 K kg mole-1

Theequilibrium constant expression for a gas reaction is,Writethe balanced chemical equation corresponding to this expression.

59.The dimensions of a rectangular block with Vermeer calliper having least count 0.1mm 5.0mm×10.0mm×10.0mm the maximum percentage error in the measurement of volume of the block is

0.0833 mol of a carbohydrate of empirical formula CH2O contain 1 g of hydrogen. The molecular formula of the carbohydrate is:

A certain oxide of metal M crystallizes in such a way that O2− ions adopt an HCP arrangement that follows the ABABAB pattern. The metal ions, occupy 23rd of the octahedral voids. The formula of the compound is:

The resistance of a conductivity cell containing 0.001 M KCl solution at 298 K is 1500 Ω. What is the cell constant if conductivity of 0.001 M KCl solution at 298 K is 0.146×10−3 S cm−1.

65.Four metallic plates each with a surface area of one side A are placed at a distance d from each other as shown in figure.Then the capacitance of the system between X and Y is

10 What is the IUPAC name of m-ClCH2C6H4CH2C(CH3)3

An oil drop of 12 excess electrons is held stationary under a constant electric field of 2.5510^4 NC^-1(Millikan's oil drop experiment). The density of oil is 1.26 g cm^-3. Estimate the radius of the drop.(g=9.81 m s^-2, e= 1.6010^-19 C)