46295 + Interview Questions in Chemistry

1.	Is 9 carat gol harder than 22 carat gold . If yes/yes not,then why?
Answer» Is 9 carat gol harder than 22 carat gold . If yes/yes not,then why?

Discussion

2.	How many coulombs are required for the oxidation of 1 mole of H2O to O2 ?
Answer» How many coulombs are required for the oxidation of 1 mole of H2O to O2 ?

Discussion

3.	The reaction follows the mechanism 1)A +B \xrightarrow{k_1}AB (fast) 2)AB+B\xrightarrow{k_2}C (slow) Overall order of the reaction is1)1 2)2 3)3 4)2.5
Answer» The reaction follows the mechanism 1)A +B \xrightarrow{k_1}AB (fast) 2)AB+B\xrightarrow{k_2}C (slow) Overall order of the reaction is1)1 2)2 3)3 4)2.5

Discussion

4.	Which of the following plots is (are) correct for the given reaction? ([P]0 is the initial concentration of P)
Answer» Which of the following plots is (are) correct for the given reaction? ( $[P]_{0}$ is the initial concentration of P)

Discussion

5.	For the reaction N, + 3H2NH,, the rate of2change of concentration for hydrogen is-0.3 10-4 Ms-1. The rate of change ofconcentration of ammonia is(1) -0.2 104 Ms-1(2) 0.2x 104 Ms-1(3) 0.1 x 10-4 Ms-1(4) 0.3x 104 Ms-1the
Answer» For the reaction N, + 3H2NH,, the rate of2change of concentration for hydrogen is-0.3 10-4 Ms-1. The rate of change ofconcentration of ammonia is(1) -0.2 104 Ms-1(2) 0.2x 104 Ms-1(3) 0.1 x 10-4 Ms-1(4) 0.3x 104 Ms-1the

Discussion

6.	Which of the following sequences represents the increasing order of the polarizing power of the cationic species?
Answer» Which of the following sequences represents the increasing order of the polarizing power of the cationic species?

Discussion

7.	33. What happens when ethyl alcohol reacts with HI in presence of KI/H3PO4?expain also.
Answer» 33. What happens when ethyl alcohol reacts with HI in presence of KI/H3PO4?expain also.

Discussion

8.	18. What is the meaning of typical elements? And why second period elements is called as typical elements?
Answer» 18. What is the meaning of typical elements? And why second period elements is called as typical elements?

Discussion

9.	Identify (X) and (Y) in the given reaction sequence.
Answer» Identify $(X)$ and $(Y)$ in the given reaction sequence.

Discussion

10.	In case of a common emitter transistor amplifier, the ratio of the collector current to the emitter current ICIE is 0.96. The current gain of the amplifier is
Answer» In case of a common emitter transistor amplifier, the ratio of the collector current to the emitter current $\frac{I_{C}}{I_{E}}$ is $0.96$ . The current gain of the amplifier is

Discussion

11.	In a reaction of C6H5Y, the major product (>60%) is m-isomer, so the group Y is
Answer» In a reaction of $C_{6} H_{5} Y,$ the major product (>60%) is m-isomer, so the group Y is

Discussion

12.	At the same temperature and pressure which of the following gas will have highest KE per mol?
Answer» At the same temperature and pressure which of the following gas will have highest KE per mol?

Discussion

13.	74. The amount of zinc(atomic weight=65) necessary to produce 224ml of H_2 by the reaction with an acid will be?
Answer» 74. The amount of zinc(atomic weight=65) necessary to produce 224ml of H_2 by the reaction with an acid will be?

Discussion

14.	CH4 and O2 when heated at 100 atm pressure and passes through copper wires and when heated with molybdenum oxide gives A and B respectively. Here A or B are respectively
Answer» $C H_{4}$ and $O_{2}$ when heated at 100 atm pressure and passes through copper wires and when heated with molybdenum oxide gives A and B respectively. Here A or B are respectively

14.

CH4 and O2 when heated at 100 atm pressure and passes through copper wires and when heated with molybdenum oxide gives A and B respectively. Here A or B are respectively

Answer»

$C H_{4}$ and $O_{2}$ when heated at 100 atm pressure and passes through copper wires and when heated with molybdenum oxide gives A and B respectively. Here A or B are respectively

Discussion

15.	for any two sets A and B A' - B' is equal to
Answer» for any two sets A and B A' - B' is equal to

Discussion

16.	Strongest reducing agent is
Answer» Strongest reducing agent is

Discussion

17.	3) A piece of pure gold of density (d, 9.300 g/cm) ssuspected to be hollow inside. It weighs 38.250 gin air and 33.865 g in water. Calculate the volume of the hollow portion in the gold if any.
Answer» 3) A piece of pure gold of density (d, 9.300 g/cm) ssuspected to be hollow inside. It weighs 38.250 gin air and 33.865 g in water. Calculate the volume of the hollow portion in the gold if any.

Discussion

18.	If vapour pressure of pure liquid A is 100 mm Hg and Vapour pressure of pure liquid B is 150 mm Hg. 2 mole of liquid A and 3 mole of liquid B are mixed to form an ideal solution. The vapour pressure of solution will be:
Answer» If vapour pressure of pure liquid $A$ is $100 mm Hg$ and Vapour pressure of pure liquid $B$ is $150 mm Hg$ . $2$ mole of liquid $A$ and $3$ mole of liquid $B$ are mixed to form an ideal solution. The vapour pressure of solution will be:

Discussion

19.	Ac8d sensitive and base sensitive groups in wolfkishnee and Clemmenson
Answer» Ac8d sensitive and base sensitive groups in wolfkishnee and Clemmenson

Discussion

20.	The reversible expansion of an ideal gas under adiabatic and isothermal conditions is shown in the figure. Which of the following statement(s) is/are correct?
Answer» The reversible expansion of an ideal gas under adiabatic and isothermal conditions is shown in the figure. Which of the following statement(s) is/are correct?

Discussion

21.	The substance that is not required in solvay process?
Answer» The substance that is not required in solvay process?

Discussion

22.	What is concentration of nitrate ions if equal volume of 0.1 M agno3 and 0.1 M nacl are mixed together
Answer» What is concentration of nitrate ions if equal volume of 0.1 M agno3 and 0.1 M nacl are mixed together

Discussion

23.	Which of the following is smallest in size?
Answer» Which of the following is smallest in size?

Discussion

24.	The number of π bonds in a nitrogen atom is
Answer» The number of $π$ bonds in a nitrogen atom is

Discussion

25.	Which of the following forms the least ionic chloride?
Answer» Which of the following forms the least ionic chloride?

Discussion

26.	Which of the following is used for the conversion of 2- hexyne into trans-2- hexene?
Answer» Which of the following is used for the conversion of 2- hexyne into trans-2- hexene?

Discussion

27.	what is the molar solubility of AgCl(s) in 0.1M NH3 (aq)?Ksp(AgCl)=1.810^-10 ,Kf[Ag(NH3)2]^+=1.610^7.
Answer» what is the molar solubility of AgCl(s) in 0.1M NH3 (aq)?Ksp(AgCl)=1.810^-10 ,Kf[Ag(NH3)2]^+=1.610^7.

Discussion

28.	What is the frequency of a photon that has an energy of 3.7 x 10-18J?
Answer» What is the frequency of a photon that has an energy of 3.7 x 10^-18J?

Discussion

29.	Methane cannot be prepared by hydrolysis of:
Answer» Methane cannot be prepared by hydrolysis of:

Discussion

30.	41. When a gas is bubbled through water at 298K a very dilute solution is obtained. Henry constant is 100 Kbar. If gas exerts partial pressure 1 bar the number of millimoles in 1L water is?
Answer» 41. When a gas is bubbled through water at 298K a very dilute solution is obtained. Henry constant is 100 Kbar. If gas exerts partial pressure 1 bar the number of millimoles in 1L water is?

Discussion

31.	43. Equal volume of 0.2 M Nacl and 0.1 M AgNO3 are mixed.find the concentration of cl- ,NO3+ ,Ag+,Na+.
Answer» 43. Equal volume of 0.2 M Nacl and 0.1 M AgNO3 are mixed.find the concentration of cl- ,NO3+ ,Ag+,Na+.

Discussion

32.	Consider the following statements with respect to lanthanides: 1. The basic strength of hydroxides of lanthanides increases from La(OH)3 to Lu(OH)3. 2. The lanthanide ions Lu+3, Yb+2 and Ce+4 are diamagnetic Which of the statement(s) given above is/are correct?1 ) 1 only 2 ) 2 only3 ) Both 1 and 2 4 ) Neither 1 nor 2
Answer» Consider the following statements with respect to lanthanides: 1. The basic strength of hydroxides of lanthanides increases from La(OH)3 to Lu(OH)3. 2. The lanthanide ions Lu+3, Yb+2 and Ce+4 are diamagnetic Which of the statement(s) given above is/are correct? 1 ) 1 only 2 ) 2 only 3 ) Both 1 and 2 4 ) Neither 1 nor 2

Discussion

33.	When SO2 is passed through acidified K2Cr2O7 solution.(a) The solution turns green(b) The solution is decolourized(c) Reduction of SO2 takes place(d) Green ppt of Cr2(SO4)3 is formed
Answer» When SO₂ is passed through acidified K₂Cr₂O₇ solution. (a) The solution turns green (b) The solution is decolourized (c) Reduction of SO₂ takes place (d) Green ppt of Cr₂(SO₄)₃ is formed

Discussion

34.	Higher density halogen decreasing order...?
Answer» Higher density halogen decreasing order...?

Discussion

35.	49 If the radius of 2nd orbit of hydrogen is 2*22/7 then what will be the radius of the 3rd orbit of He+
Answer» 49 If the radius of 2nd orbit of hydrogen is 2*22/7 then what will be the radius of the 3rd orbit of He+

Discussion

36.	Calculate the weight of one molecule of ch4
Answer» Calculate the weight of one molecule of ch4

Discussion

37.	Bragg's law is given by the equation [MP PMT 1995, 2002]
Answer» Bragg's law is given by the equation [MP PMT 1995, 2002]

37.

Bragg's law is given by the equation [MP PMT 1995, 2002]

Answer»

Bragg's law is given by the equation

[MP PMT 1995, 2002]

Discussion

38.	A solution saturated with sparingly soluble salts P+R- have the concentration of ions other than(given Ksp of PQ and QR are 310^16 and 110^-16 respectively)1)210^-82)110^-83)1.510^-84)0.510^-8
Answer» A solution saturated with sparingly soluble salts P+R- have the concentration of ions other than(given Ksp of PQ and QR are 310^16 and 110^-16 respectively) 1)210^-8 2)110^-8 3)1.510^-8 4)0.510^-8

Discussion

39.	When 1.80 gm glucose dissolved in 90 gm of H2O, the mole fraction of glucose is
Answer» When 1.80 gm glucose dissolved in 90 gm of $H_{2} O$ , the mole fraction of glucose is

Discussion

40.	Zinc sulphide exists in two different structural forms as zinc blende (FCC) and Wurtzite (HCP). What wil the coordination number of cation and anion in both the structurestruct
Answer» Zinc sulphide exists in two different structural forms as zinc blende (FCC) and Wurtzite (HCP). What wil the coordination number of cation and anion in both the structure struct

Discussion

41.	27. a solid A+B- hasNaCL type closed pack structure . if the anion has a radius of 250pm , what should be the ideal radius for the catin >/ can a cation C+ having a radius of 180pm be slipped into a tetrahaedral site of the crystal A+B-? give reason for this .
Answer» 27. a solid A+B- hasNaCL type closed pack structure . if the anion has a radius of 250pm , what should be the ideal radius for the catin >/ can a cation C+ having a radius of 180pm be slipped into a tetrahaedral site of the crystal A+B-? give reason for this .

Discussion

42.	3. If the radius of the first bohar orbit of the H atom is r, then for the Li2+ ion it will be
Answer» 3. If the radius of the first bohar orbit of the H atom is r, then for the Li2+ ion it will be

Discussion

43.	Elements have been arranged in the following sequence on the basis of their increasing atomic masses.F, Na, Mg, Al, Si, P, S, Cl, Ar, K.(a) Pick two sets of elements which have similar properties.(b) The given sequence represents which law of classification of elements?
Answer» Elements have been arranged in the following sequence on the basis of their increasing atomic masses. F, Na, Mg, Al, Si, P, S, Cl, Ar, K. (a) Pick two sets of elements which have similar properties. (b) The given sequence represents which law of classification of elements?

43.

Elements have been arranged in the following sequence on the basis of their increasing atomic masses.F, Na, Mg, Al, Si, P, S, Cl, Ar, K.(a) Pick two sets of elements which have similar properties.(b) The given sequence represents which law of classification of elements?

Answer»

Elements have been arranged in the following sequence on the basis of their increasing atomic masses.

F, Na, Mg, Al, Si, P, S, Cl, Ar, K.

(a) Pick two sets of elements which have similar properties.

(b) The given sequence represents which law of classification of elements?

Discussion

44.	18 IP1 and EA1 values of chlorine are 12 ev and 3.6 ev respectively. Number of chlorine atoms in gaseous state that can be ionised by utilising the energy that is liberated in the process Cl(g)+e- ---> Cl- (g) involving 1 mol of 'Cl' atoms is
Answer» 18 IP1 and EA1 values of chlorine are 12 ev and 3.6 ev respectively. Number of chlorine atoms in gaseous state that can be ionised by utilising the energy that is liberated in the process Cl(g)+e- ---> Cl- (g) involving 1 mol of 'Cl' atoms is

Discussion

45.	Hydrogen is evolved by the action of cold dil. HNO3 on
Answer» Hydrogen is evolved by the action of cold dil. $H N O_{3}$ on

45.

Hydrogen is evolved by the action of cold dil. HNO3 on

Answer»

Hydrogen is evolved by the action of cold dil. $H N O_{3}$ on

Discussion

46.	the no. of orbitals in a shell n is given by
Answer» the no. of orbitals in a shell n is given by

Discussion

47.	45 Calculate the amount to oxalic acid (H2C2O4.2H2O) required to obtain 250ml of semi-molar solution A) 15.75g B) 1.575g C)157.5g D) none
Answer» 45 Calculate the amount to oxalic acid (H2C2O4.2H2O) required to obtain 250ml of semi-molar solution A) 15.75g B) 1.575g C)157.5g D) none

Discussion

48.	HgCl2 and I2 both when dissolved in water containing I− ions, the pair of species formed is:
Answer» $H g C l_{2}$ and $I_{2}$ both when dissolved in water containing $I^{-}$ ions, the pair of species formed is:

Discussion

49.	Rosemund's reduction is used for the preparation of ??
Answer» Rosemund's reduction is used for the preparation of ??

Discussion

50.	Oxides of nonmetals react with water to give
Answer» Oxides of nonmetals react with water to give

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Is 9 carat gol harder than 22 carat gold . If yes/yes not,then why?

How many coulombs are required for the oxidation of 1 mole of H2O to O2 ?

The reaction follows the mechanism 1)A +B \xrightarrow{k_1}AB (fast) 2)AB+B\xrightarrow{k_2}C (slow) Overall order of the reaction is1)1 2)2 3)3 4)2.5

Which of the following plots is (are) correct for the given reaction? ([P]0 is the initial concentration of P)

For the reaction N, + 3H2NH,, the rate of2change of concentration for hydrogen is-0.3 10-4 Ms-1. The rate of change ofconcentration of ammonia is(1) -0.2 104 Ms-1(2) 0.2x 104 Ms-1(3) 0.1 x 10-4 Ms-1(4) 0.3x 104 Ms-1the

Which of the following sequences represents the increasing order of the polarizing power of the cationic species?

33. What happens when ethyl alcohol reacts with HI in presence of KI/H3PO4?expain also.

18. What is the meaning of typical elements? And why second period elements is called as typical elements?

Identify (X) and (Y) in the given reaction sequence.

In case of a common emitter transistor amplifier, the ratio of the collector current to the emitter current ICIE is 0.96. The current gain of the amplifier is

In a reaction of C6H5Y, the major product (&gt;60%) is m-isomer, so the group Y is

At the same temperature and pressure which of the following gas will have highest KE per mol?

74. The amount of zinc(atomic weight=65) necessary to produce 224ml of H_2 by the reaction with an acid will be?

CH4 and O2 when heated at 100 atm pressure and passes through copper wires and when heated with molybdenum oxide gives A and B respectively. Here A or B are respectively

for any two sets A and B A' - B' is equal to

Strongest reducing agent is

3) A piece of pure gold of density (d, 9.300 g/cm) ssuspected to be hollow inside. It weighs 38.250 gin air and 33.865 g in water. Calculate the volume of the hollow portion in the gold if any.

If vapour pressure of pure liquid A is 100 mm Hg and Vapour pressure of pure liquid B is 150 mm Hg. 2 mole of liquid A and 3 mole of liquid B are mixed to form an ideal solution. The vapour pressure of solution will be:

Ac8d sensitive and base sensitive groups in wolfkishnee and Clemmenson

The reversible expansion of an ideal gas under adiabatic and isothermal conditions is shown in the figure. Which of the following statement(s) is/are correct?

The substance that is not required in solvay process?

What is concentration of nitrate ions if equal volume of 0.1 M agno3 and 0.1 M nacl are mixed together

Which of the following is smallest in size?

The number of π bonds in a nitrogen atom is

Which of the following forms the least ionic chloride?

Which of the following is used for the conversion of 2- hexyne into trans-2- hexene?

what is the molar solubility of AgCl(s) in 0.1M NH3 (aq)?Ksp(AgCl)=1.8*10^-10 ,Kf[Ag(NH3)2]^+=1.6*10^7.

What is the frequency of a photon that has an energy of 3.7 x 10-18J?

Methane cannot be prepared by hydrolysis of:

41. When a gas is bubbled through water at 298K a very dilute solution is obtained. Henry constant is 100 Kbar. If gas exerts partial pressure 1 bar the number of millimoles in 1L water is?

43. Equal volume of 0.2 M Nacl and 0.1 M AgNO3 are mixed.find the concentration of cl- ,NO3+ ,Ag+,Na+.

When SO2 is passed through acidified K2Cr2O7 solution.(a) The solution turns green(b) The solution is decolourized(c) Reduction of SO2 takes place(d) Green ppt of Cr2(SO4)3 is formed

Higher density halogen decreasing order...?

49 If the radius of 2nd orbit of hydrogen is 2*22/7 then what will be the radius of the 3rd orbit of He+

Calculate the weight of one molecule of ch4

Bragg's law is given by the equation [MP PMT 1995, 2002]

A solution saturated with sparingly soluble salts P+R- have the concentration of ions other than(given Ksp of PQ and QR are 3*10^16 and 1*10^-16 respectively)1)2*10^-82)1*10^-83)1.5*10^-84)0.5*10^-8

When 1.80 gm glucose dissolved in 90 gm of H2O, the mole fraction of glucose is

Zinc sulphide exists in two different structural forms as zinc blende (FCC) and Wurtzite (HCP). What wil the coordination number of cation and anion in both the structurestruct

27. a solid A+B- hasNaCL type closed pack structure . if the anion has a radius of 250pm , what should be the ideal radius for the catin >/ can a cation C+ having a radius of 180pm be slipped into a tetrahaedral site of the crystal A+B-? give reason for this .

3. If the radius of the first bohar orbit of the H atom is r, then for the Li2+ ion it will be

Elements have been arranged in the following sequence on the basis of their increasing atomic masses.F, Na, Mg, Al, Si, P, S, Cl, Ar, K.(a) Pick two sets of elements which have similar properties.(b) The given sequence represents which law of classification of elements?

18 IP1 and EA1 values of chlorine are 12 ev and 3.6 ev respectively. Number of chlorine atoms in gaseous state that can be ionised by utilising the energy that is liberated in the process Cl(g)+e- ---> Cl- (g) involving 1 mol of 'Cl' atoms is

Hydrogen is evolved by the action of cold dil. HNO3 on

the no. of orbitals in a shell n is given by

45 Calculate the amount to oxalic acid (H2C2O4.2H2O) required to obtain 250ml of semi-molar solution A) 15.75g B) 1.575g C)157.5g D) none

HgCl2 and I2 both when dissolved in water containing I− ions, the pair of species formed is:

Rosemund's reduction is used for the preparation of ??

Oxides of nonmetals react with water to give

In a reaction of C6H5Y, the major product (>60%) is m-isomer, so the group Y is

what is the molar solubility of AgCl(s) in 0.1M NH3 (aq)?Ksp(AgCl)=1.810^-10 ,Kf[Ag(NH3)2]^+=1.610^7.

A solution saturated with sparingly soluble salts P+R- have the concentration of ions other than(given Ksp of PQ and QR are 310^16 and 110^-16 respectively)1)210^-82)110^-83)1.510^-84)0.510^-8