46295 + Interview Questions in Chemistry

1.	The number −157 on the number line will be represented between which integers?
Answer» The number $\frac{- 15}{7}$ on the number line will be represented between which integers?

Discussion

2.	During electrolysis of fused aluminum chloride 0.9g of Al was deposited on the cathode.The volume of chlorine liberated at the anode will be
Answer» During electrolysis of fused aluminum chloride 0.9g of Al was deposited on the cathode.The volume of chlorine liberated at the anode will be

Discussion

3.	47 How many moles of potassium dichromate are reduced by 1 moles of formic acid
Answer» 47 How many moles of potassium dichromate are reduced by 1 moles of formic acid

Discussion

4.	In a photoelectric experiment, two metal plates A and B are used for a given light intensity I and frequency f. Work function of metal B is more than that of A. The correct variation of stopping potential difference versus frequency is given by
Answer» In a photoelectric experiment, two metal plates $A$ and $B$ are used for a given light intensity $I$ and frequency $f$ . Work function of metal $B$ is more than that of $A$ . The correct variation of stopping potential difference versus frequency is given by

Discussion

5.	Most stable carbonium ion among the following is :
Answer» Most stable carbonium ion among the following is :

Discussion

6.	Which is a stronger reducing agent Cr2+ or Fe2+ aned why!
Answer» Which is a stronger reducing agent Cr2+ or Fe2+ aned why!

Discussion

7.	Find the oxidation number of sulphur for the given coumpound.
Answer» Find the oxidation number of sulphur for the given coumpound.

Discussion

8.	Formation of an ethyl ethanoate from ethanol and acetic acid in the presence
Answer» Formation of an ethyl ethanoate from ethanol and acetic acid in the presence

Discussion

9.	21 When acidified K2Cr2O7 solution is added to Sn2+salts, then Sn2+ changes to
Answer» 21 When acidified K2Cr2O7 solution is added to Sn2+salts, then Sn2+ changes to

Discussion

10.	In a solid AB having the NaCl structure, A atom occupies the corners of the cubic unit cell. If all the face-centred atoms along one of the axes are removed, then the resultant stoichiometry of the solid is:
Answer» In a solid AB having the NaCl structure, A atom occupies the corners of the cubic unit cell. If all the face-centred atoms along one of the axes are removed, then the resultant stoichiometry of the solid is:

Discussion

11.	Why is NO2 more acidic than CO2
Answer» Why is NO2 more acidic than CO2

Discussion

12.	what is plorized by double refrection?
Answer» what is plorized by double refrection?

Discussion

13.	Please provide me with total formula sheet of mole concept.
Answer» Please provide me with total formula sheet of mole concept.

Discussion

14.	ifmolality of a subs†an ce is m mol/kg and density is d kg/l than find molarity ,mole fraction anmass percentage
Answer» ifmolality of a subs†an ce is m mol/kg and density is d kg/l than find molarity ,mole fraction anmass percentage

Discussion

15.	49.Half life of a reaction is found to be inversely promotional to the cube of initial concentration.The order of reaction is? a.5 b.2 c.4 d.3
Answer» 49.Half life of a reaction is found to be inversely promotional to the cube of initial concentration.The order of reaction is? a.5 b.2 c.4 d.3

Discussion

16.	12. ASSERTION REASON A: Phenol forms 2,4,6-tribromophenol on treatment with Br2 water at 273 K. R: Phenol is o,p-directing group.
Answer» 12. ASSERTION REASON A: Phenol forms 2,4,6-tribromophenol on treatment with Br2 water at 273 K. R: Phenol is o,p-directing group.

Discussion

17.	The oxidation state of S in H2S2O8 is
Answer» The oxidation state of $S$ in $H_{2} S_{2} O_{8}$ is

Discussion

18.	Writethe resonance structures for SO3,NO2and.
Answer» Write the resonance structures for SO₃, NO₂ and.

Discussion

19.	Self-condensation of two moles of ethyl acetate in presence of Sodium ethoxide yields:
Answer» Self-condensation of two moles of ethyl acetate in presence of Sodium ethoxide yields:

Discussion

20.	0 (CH,),CH-CH,Br(i) (CH,),CH-CH,BrThe mechanisms of reactions (i) and (ii) are\lbrack AIPMT (Mains)-2011\rbrack(2) S, 2 and S 1(4) S,1 and S 1respectivelyS 2 and S2(3) S 1 and S 2
Answer» 0 (CH,),CH-CH,Br(i) (CH,),CH-CH,BrThe mechanisms of reactions (i) and (ii) are\lbrack AIPMT (Mains)-2011\rbrack(2) S, 2 and S 1(4) S,1 and S 1respectivelyS 2 and S2(3) S 1 and S 2

Discussion

21.	Which of the following are states of matter?
Answer» Which of the following are states of matter?

Discussion

22.	a and b are van der Waal's constants for gases. Chlorine is more easily liquefied than ethane because
Answer» $a$ and $b$ are van der Waal's constants for gases. Chlorine is more easily liquefied than ethane because

Discussion

23.	A gas turbine power plant working on the Brayton cycle with regeneration of 80% effectiveness. The air at the inlet to the compressor is at 1 bar and 300 K the pressure ratio is 6 and maximum cycle temperature is 1200 K. The turbine and compressor each have an efficiency of 80%.The efficiency of the cycle with the regeneration is_______%.30.6
Answer» A gas turbine power plant working on the Brayton cycle with regeneration of 80% effectiveness. The air at the inlet to the compressor is at 1 bar and 300 K the pressure ratio is 6 and maximum cycle temperature is 1200 K. The turbine and compressor each have an efficiency of 80%. The efficiency of the cycle with the regeneration is_______%. 30.6

Discussion

24.	21. Calculate the standard enthalpy of formation of n-butane, given that the standard enthalpies of combustion of n-butane, C(graphite) and H2(g) are –2878.5 kJ mol–1, –393.5 kJ mol–1 and –285.8 kJ mol–1 respectively.
Answer» 21. Calculate the standard enthalpy of formation of n-butane, given that the standard enthalpies of combustion of n-butane, C(graphite) and H2(g) are –2878.5 kJ mol–1, –393.5 kJ mol–1 and –285.8 kJ mol–1 respectively.

Discussion

25.	benzene treated with 1. Na/NH3(l) 2. O3/Zn-H2O 3.Zn-Hg/Conc HCl. What is the final product?
Answer» benzene treated with 1. Na/NH3(l) 2. O3/Zn-H2O 3.Zn-Hg/Conc HCl. What is the final product?

Discussion

26.	The most abundant element in the earth is __
Answer» The most abundant element in the earth is __

Discussion

27.	If the maximum kinetic energy of the photoelectrons is E when a radiation of frequency ν is incident on a photosensitive metal, then the maximum kinetic energy of the photoelectrons when the frequency of the incident radiation is doubled is:
Answer» If the maximum kinetic energy of the photoelectrons is $E$ when a radiation of frequency $ν$ is incident on a photosensitive metal, then the maximum kinetic energy of the photoelectrons when the frequency of the incident radiation is doubled is:

Discussion

28.	A substance AxBy crystallizes in a face - centred cubic lattice in which atoms A occupy the centres of each face of the cube. Identify the correct composition of the substance AxBy.
Answer» A substance $A_{x} B_{y}$ crystallizes in a face - centred cubic lattice in which atoms A occupy the centres of each face of the cube. Identify the correct composition of the substance $A_{x} B_{y}$ .

Discussion

29.	11.Flow chart for oxidation of alkene continuously
Answer» 11.Flow chart for oxidation of alkene continuously

Discussion

30.	Who suggested the distribution of electrons into different shells? How are the electrons distributed across these shells?
Answer» Who suggested the distribution of electrons into different shells? How are the electrons distributed across these shells?

Discussion

31.	How will you convert ethanal into the following compounds ? Butane - 1, 3 - diol But - 2 - enal But - 2 - enoic acid
Answer» How will you convert ethanal into the following compounds ? Butane - 1, 3 - diol But - 2 - enal But - 2 - enoic acid

31.

How will you convert ethanal into the following compounds ? Butane - 1, 3 - diol But - 2 - enal But - 2 - enoic acid

Answer»

How will you convert ethanal into the following compounds ?

Butane - 1, 3 - diol

But - 2 - enal

But - 2 - enoic acid

Discussion

32.	derivation of heron's formula
Answer» derivation of heron's formula

Discussion

33.	8. Out of HCN & CH3OH Which will show tautomerism?Why and why not?
Answer» 8. Out of HCN & CH3OH Which will show tautomerism?Why and why not?

Discussion

34.	K2Cr2O7 in acidic medium converts into
Answer» $K_{2} C r_{2} O_{7}$ in acidic medium converts into

Discussion

35.	14. A urea solution has boiling point 373.128K then what is its melting point ? Given kf =1.86 and kb =0.52.
Answer» 14. A urea solution has boiling point 373.128K then what is its melting point ? Given kf =1.86 and kb =0.52.

Discussion

36.	What is AM GM inequalities
Answer» What is AM GM inequalities

Discussion

37.	A steel tank contains air at a pressure of 15 bar at 20°C. The tank is provided with a safety valve which can withstand a pressure of 35 bar. Calculate the temperature to which the tank can be safely heated
Answer» A steel tank contains air at a pressure of 15 bar at 20°C. The tank is provided with a safety valve which can withstand a pressure of 35 bar. Calculate the temperature to which the tank can be safely heated

Discussion

38.	A compound forms cubic close packed structure. What is the total number of voids in 1.2 mol of it?
Answer» A compound forms cubic close packed structure. What is the total number of voids in $1.2 m o l$ of it?

Discussion

39.	Which has maximum value of △ eq at constanttemperature assuming 100% ionisation of eachelectrolyte?(a) 0.1 M H2so4 d(c) 0.1 M H3PO3(b) 0.1 М H2po4(d) Equal
Answer» Which has maximum value of △ eq at constanttemperature assuming 100% ionisation of eachelectrolyte?(a) 0.1 M H2so4 d(c) 0.1 M H3PO3(b) 0.1 М H2po4(d) Equal

Discussion

40.	How many moles of Mg3(PO4)2 will contain 0.25 moles of oxygen atom?
Answer» How many moles of Mg3(PO4)2 will contain 0.25 moles of oxygen atom?

Discussion

41.	Which one of the following is relative periodic property?a) Electronegativityb) Electron affinityc) Atomic radiid) Ionic radii
Answer» Which one of the following is relative periodic property? a) Electronegativity b) Electron affinity c) Atomic radii d) Ionic radii

Discussion

42.	Identify the correct order of acidic strength of CO2,CaO,H2O.
Answer» Identify the correct order of acidic strength of $C O_{2}, C a O, H_{2} O$ .

Discussion

43.	Is angle OAB same as angle BOA ?
Answer» Is angle OAB same as angle BOA ?

Discussion

44.	How do you explain the functionality of a monomer ?
Answer» How do you explain the functionality of a monomer ?

Discussion

45.	After some 20 years, you have become a scientist. You found two new solids X and Y. Some of the properties of these solids are: With the given information, which of the following is true??
Answer» After some 20 years, you have become a scientist. You found two new solids X and Y. Some of the properties of these solids are: With the given information, which of the following is true??

45.

After some 20 years, you have become a scientist. You found two new solids X and Y. Some of the properties of these solids are: With the given information, which of the following is true??

Answer»

After some 20 years, you have become a scientist. You found two new solids X and Y. Some of the properties of these solids are:

With the given information, which of the following is true??

Discussion

46.	5. 0.25 mole of a hydrocarbon requires 0.5 mole of hydrogen for complete saturation. Possible formula of the hydrocarbon is(c) C3H8(d) C3H4(b) C3H6
Answer» 5. 0.25 mole of a hydrocarbon requires 0.5 mole of hydrogen for complete saturation. Possible formula of the hydrocarbon is(c) C3H8(d) C3H4(b) C3H6

Discussion

47.	One mole of an ideal gas at 300 K in thermal contact with surroundings expands isothermally from 1.0L to 2.0L against a constant pressure of 3.0 atm. In this process, the change in entropy of surroundings (ΔS) in T−1 is (1 L atm = 101.3J)
Answer» One mole of an ideal gas at 300 K in thermal contact with surroundings expands isothermally from 1.0L to 2.0L against a constant pressure of 3.0 atm. In this process, the change in entropy of surroundings $(Δ S) i n T^{- 1}$ is (1 L atm = 101.3J)

Discussion

48.	1 mol of iron(fe) reacts completely with 0.65 mol o2 to give a mixture of only feo and fe2o3 .mole ratio of ferrous oxide to ferric oxide is :
Answer» 1 mol of iron(fe) reacts completely with 0.65 mol o2 to give a mixture of only feo and fe2o3 .mole ratio of ferrous oxide to ferric oxide is :

Discussion

49.	what is reduction to pinacole?
Answer» what is reduction to pinacole?

Discussion

50.	47. Why bonding molecular orbital are lower energy than atomic orbital and antiboding molecular orbital more than atomic orbital
Answer» 47. Why bonding molecular orbital are lower energy than atomic orbital and antiboding molecular orbital more than atomic orbital

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

The number −157 on the number line will be represented between which integers?

During electrolysis of fused aluminum chloride 0.9g of Al was deposited on the cathode.The volume of chlorine liberated at the anode will be

47 How many moles of potassium dichromate are reduced by 1 moles of formic acid

In a photoelectric experiment, two metal plates A and B are used for a given light intensity I and frequency f. Work function of metal B is more than that of A. The correct variation of stopping potential difference versus frequency is given by

Most stable carbonium ion among the following is :

Which is a stronger reducing agent Cr2+ or Fe2+ aned why!

Find the oxidation number of sulphur for the given coumpound.

Formation of an ethyl ethanoate from ethanol and acetic acid in the presence

21 When acidified K2Cr2O7 solution is added to Sn2+salts, then Sn2+ changes to

In a solid AB having the NaCl structure, A atom occupies the corners of the cubic unit cell. If all the face-centred atoms along one of the axes are removed, then the resultant stoichiometry of the solid is:

Why is NO2 more acidic than CO2

what is plorized by double refrection?

Please provide me with total formula sheet of mole concept.

ifmolality of a subs†an ce is m mol/kg and density is d kg/l than find molarity ,mole fraction anmass percentage

49.Half life of a reaction is found to be inversely promotional to the cube of initial concentration.The order of reaction is? a.5 b.2 c.4 d.3

12. ASSERTION REASON A: Phenol forms 2,4,6-tribromophenol on treatment with Br2 water at 273 K. R: Phenol is o,p-directing group.

The oxidation state of S in H2S2O8 is

Writethe resonance structures for SO3,NO2and.

Self-condensation of two moles of ethyl acetate in presence of Sodium ethoxide yields:

0 (CH,),CH-CH,Br(i) (CH,),CH-CH,BrThe mechanisms of reactions (i) and (ii) are\lbrack AIPMT (Mains)-2011\rbrack(2) S, 2 and S 1(4) S,1 and S 1respectivelyS 2 and S2(3) S 1 and S 2

Which of the following are states of matter?

a and b are van der Waal's constants for gases. Chlorine is more easily liquefied than ethane because

21. Calculate the standard enthalpy of formation of n-butane, given that the standard enthalpies of combustion of n-butane, C(graphite) and H2(g) are –2878.5 kJ mol–1, –393.5 kJ mol–1 and –285.8 kJ mol–1 respectively.

benzene treated with 1. Na/NH3(l) 2. O3/Zn-H2O 3.Zn-Hg/Conc HCl. What is the final product?

The most abundant element in the earth is __

If the maximum kinetic energy of the photoelectrons is E when a radiation of frequency ν is incident on a photosensitive metal, then the maximum kinetic energy of the photoelectrons when the frequency of the incident radiation is doubled is:

A substance AxBy crystallizes in a face - centred cubic lattice in which atoms A occupy the centres of each face of the cube. Identify the correct composition of the substance AxBy.

11.Flow chart for oxidation of alkene continuously

Who suggested the distribution of electrons into different shells? How are the electrons distributed across these shells?

How will you convert ethanal into the following compounds ? Butane - 1, 3 - diol But - 2 - enal But - 2 - enoic acid

derivation of heron's formula

8. Out of HCN & CH3OH Which will show tautomerism?Why and why not?

K2Cr2O7 in acidic medium converts into

14. A urea solution has boiling point 373.128K then what is its melting point ? Given kf =1.86 and kb =0.52.

What is AM GM inequalities

A steel tank contains air at a pressure of 15 bar at 20°C. The tank is provided with a safety valve which can withstand a pressure of 35 bar. Calculate the temperature to which the tank can be safely heated

A compound forms cubic close packed structure. What is the total number of voids in 1.2 mol of it?

Which has maximum value of △ eq at constanttemperature assuming 100% ionisation of eachelectrolyte?(a) 0.1 M H2so4 d(c) 0.1 M H3PO3(b) 0.1 М H2po4(d) Equal

How many moles of Mg3(PO4)2 will contain 0.25 moles of oxygen atom?

Which one of the following is relative periodic property?a) Electronegativityb) Electron affinityc) Atomic radiid) Ionic radii

Identify the correct order of acidic strength of CO2,CaO,H2O.

Is angle OAB same as angle BOA ?

How do you explain the functionality of a monomer ?

After some 20 years, you have become a scientist. You found two new solids X and Y. Some of the properties of these solids are: With the given information, which of the following is true??

5. 0.25 mole of a hydrocarbon requires 0.5 mole of hydrogen for complete saturation. Possible formula of the hydrocarbon is(c) C3H8(d) C3H4(b) C3H6

One mole of an ideal gas at 300 K in thermal contact with surroundings expands isothermally from 1.0L to 2.0L against a constant pressure of 3.0 atm. In this process, the change in entropy of surroundings (ΔS) in T−1 is (1 L atm = 101.3J)

1 mol of iron(fe) reacts completely with 0.65 mol o2 to give a mixture of only feo and fe2o3 .mole ratio of ferrous oxide to ferric oxide is :

what is reduction to pinacole?

47. Why bonding molecular orbital are lower energy than atomic orbital and antiboding molecular orbital more than atomic orbital