46295 + Interview Questions in Chemistry

1.	1. Assuming salts to be 90percent dissociated which of the following will have highest osmotic pressure? 1)decimolar aluminium sulphate 2)decimolar barium chloride 3)decimolar sodium sulphate
Answer» 1. Assuming salts to be 90percent dissociated which of the following will have highest osmotic pressure? 1)decimolar aluminium sulphate 2)decimolar barium chloride 3)decimolar sodium sulphate

Discussion

2.	The plate separation in a parallel plate capacitor is d and plate area is A If it is charged to V volts then calculate the work done in increasing the plate separation to 2d.
Answer» The plate separation in a parallel plate capacitor is d and plate area is A If it is charged to V volts then calculate the work done in increasing the plate separation to 2d.

Discussion

3.	InA+B- ionic compound, radii ofA+andB- ions are 180pm and 187 pmrespectively. The crystal structure of this compound will be
Answer» InA+B- ionic compound, radii ofA+andB- ions are 180pm and 187 pmrespectively. The crystal structure of this compound will be

Discussion

4.	Calculate number of moles in 1000u of He
Answer» Calculate number of moles in 1000u of He

Discussion

5.	Wavelength of emitted radiation when an electron jumps from 4th orbit to 2nd orbit of helium
Answer» Wavelength of emitted radiation when an electron jumps from 4th orbit to 2nd orbit of helium

Discussion

6.	Oxidation state of ch3ch2oh
Answer» Oxidation state of ch3ch2oh

Discussion

7.	why the Tetrachloro methane is not hydrolysed ?
Answer» why the Tetrachloro methane is not hydrolysed ?

Discussion

8.	HClO4 HClO3 HClO2 HCl0 arrange in terms of oxidising power also HIO4 HBrO4 HClO4
Answer» HClO4 HClO3 HClO2 HCl0 arrange in terms of oxidising power also HIO4 HBrO4 HClO4

Discussion

9.	What is pauling scale of electronegativity?
Answer» What is pauling scale of electronegativity?

Discussion

10.	the number of electrons with m=0 in an atom with atomic number 33
Answer» the number of electrons with m=0 in an atom with atomic number 33

Discussion

11.	86.What is coooh group
Answer» 86.What is coooh group

Discussion

12.	Forthe following compounds, write structural formulas and IUPAC namesfor all possible isomers having the numberof double or triple bond as indicated:(a)C4H8(one double bond)(b)C5H8(one triple bond)
Answer» For the following compounds, write structural formulas and IUPAC names for all possible isomers having the number of double or triple bond as indicated: (a) C₄H₈ (one double bond) (b) C₅H₈(one triple bond)

12.

Forthe following compounds, write structural formulas and IUPAC namesfor all possible isomers having the numberof double or triple bond as indicated:(a)C4H8(one double bond)(b)C5H8(one triple bond)

Answer»

For
the following compounds, write structural formulas and IUPAC names
for all possible isomers having the number
of double or triple bond as indicated:

(a)
C₄H₈
(one double bond)

(b)
C₅H₈(one triple bond)

Discussion

13.	Iften volumes of dihydrogen gas react with five volumes of dioxygengas, how many volumes of water vapour wouldbe produced?
Answer» If ten volumes of dihydrogen gas react with five volumes of dioxygen gas, how many volumes of water vapour would be produced?

Discussion

14.	Among the following, intensive property is:
Answer» Among the following, intensive property is:

Discussion

15.	Which of the following 0.10 m aqueous solutions will have the lowest freezing point?
Answer» Which of the following 0.10 m aqueous solutions will have the lowest freezing point?

Discussion

16.	Regardez l'image et répondez.1. Que porte cette fille?2. Comment est les cheveux?3. De quelle couleur sont ses vêtements?
Answer» Regardez l'image et répondez. 1. Que porte cette fille? 2. Comment est les cheveux? 3. De quelle couleur sont ses vêtements?

Discussion

17.	Potassium crystallizes in a body centred cubic lattice. If, the approximate number of unit cells in 4.0 g potassium is x×1022, then x is (NA=6×1023)
Answer» Potassium crystallizes in a body centred cubic lattice. If, the approximate number of unit cells in $4.0$ g potassium is $x \times 10^{22}$ , then $x$ is ( $N_{A} = 6 \times 10^{23}$ )

Discussion

18.	Half cell reaction E0=1.23 V at 298k . O2+4H+ +4e-= 2H2O .assuming po2 =1atm. the potential of half life reaction in pure tempareture at the same tempareture is what?
Answer» Half cell reaction E0=1.23 V at 298k . O2+4H+ +4e-= 2H2O .assuming po2 =1atm. the potential of half life reaction in pure tempareture at the same tempareture is what?

Discussion

19.	The radius ratio of Cs+ to Cl- is 0.90. If the radius of Cl- ion is 1.80 angstrong, the false statement regarding the CsCl structure is-1)the dis†an ce between the centres of Cl- ions is greater than 3.60angstrong, 2)dis†an ce between the centres of two Cl- ions is 3.60angstrong, 3)dis†an ce between Cs+ion and Cl-ion is 3.42angstrong, 4)dis†an ce between two Cs+ ions is 3.24angstrong.
Answer» The radius ratio of Cs+ to Cl- is 0.90. If the radius of Cl- ion is 1.80 angstrong, the false statement regarding the CsCl structure is-1)the dis†an ce between the centres of Cl- ions is greater than 3.60angstrong, 2)dis†an ce between the centres of two Cl- ions is 3.60angstrong, 3)dis†an ce between Cs+ion and Cl-ion is 3.42angstrong, 4)dis†an ce between two Cs+ ions is 3.24angstrong.

Discussion

20.	Which of the following is incorrect?
Answer» Which of the following is incorrect?

Discussion

21.	on being slowly passed through water ,PH_{3 } form bubbles but NH_3 dissolve.
Answer» on being slowly passed through water ,PH_{3 } form bubbles but NH_3 dissolve.

Discussion

22.	38. Ptcl2.2h2o does not react with AgNO3
Answer» 38. Ptcl2.2h2o does not react with AgNO3

Discussion

23.	AlCl3,MgCl2,CCl4,NaCl,NCL3 arrange the given compounds in increasing order of ionic nature
Answer» AlCl3,MgCl2,CCl4,NaCl,NCL3 arrange the given compounds in increasing order of ionic nature

Discussion

24.	When 2 moles of an ideal monoatomic gas are heated from 300 K to 600 K at constant pressure. The change in entropy of gas (△S) is:
Answer» When $2 m o l e s$ of an ideal monoatomic gas are heated from $300 K$ to $600 K$ at constant pressure. The change in entropy of gas $(△ S)$ is:

Discussion

25.	Which of the chapter we have to do first mole concept or atomic structure?
Answer» Which of the chapter we have to do first mole concept or atomic structure?

Discussion

26.	calculate the equilibrium constant for the reaction :- Mg(s) \| Mg2+(0.0001M) \|\| Cu2+(0.0001M) \| Cu(s) Given E^° (Mg2+/Mg)= -2.37 V, E^°=+0.34 V.
Answer» calculate the equilibrium constant for the reaction :- Mg(s) \| Mg2+(0.0001M) \|\| Cu2+(0.0001M) \| Cu(s) Given E^° (Mg2+/Mg)= -2.37 V, E^°=+0.34 V.

Discussion

27.	Consider the below reaction where 6.1 g of benzoic acid is used to get 7.8 g of m-bromo benzoic acid.The percentage yield of the product is_____. (Round off to the nearest integer)[Given : Atomic masses : C : 12.0 u, H : 1.0 u, O : 16.0 u, Br : 80.0 u]
Answer» Consider the below reaction where $6.1 g$ of benzoic acid is used to get $7.8 g$ of m-bromo benzoic acid. The percentage yield of the product is_____. (Round off to the nearest integer) [Given : Atomic masses : C : 12.0 u, H : 1.0 u, O : 16.0 u, Br : 80.0 u]

Discussion

28.	In which of the following reactions does H2O2 act as a reducing agent?
Answer» In which of the following reactions does $H_{2} O_{2}$ act as a reducing agent?

Discussion

29.	The compound that is not a Lewis acid is:
Answer» The compound that is not a Lewis acid is:

Discussion

30.	The half life of a radioactive substance is 13 years. The decay constant is,
Answer» The half life of a radioactive substance is $13$ years. The decay constant is,

Discussion

31.	The H – O – O bond angle in H2O2 is
Answer» The H – O – O bond angle in $H_{2} O_{2}$ is

Discussion

32.	Find the odd element from the given electronic configurations.
Answer» Find the odd element from the given electronic configurations.

Discussion

33.	41. What is the molarity of Sulphuric acid solution, that has a density 1.84g/cc and contains 98% by weight of solute?
Answer» 41. What is the molarity of Sulphuric acid solution, that has a density 1.84g/cc and contains 98% by weight of solute?

Discussion

34.	In the Ideal-Gas Equation,what is the value of cons†an t 'R'?
Answer» In the Ideal-Gas Equation,what is the value of cons†an t 'R'?

Discussion

35.	For an ideal gas having molar mass M, specific heat at constant pressure can be given as? Given M, R ,
Answer» For an ideal gas having molar mass M, specific heat at constant pressure can be given as? Given M, R ,

Discussion

36.	Be3+ and a proton are accelerated by the same potential, their de – Broglie wavelengths have the ratio (assume mass of proton = mass of neutron) x:y. Then x+y is:
Answer» $B e^{3 +}$ and a proton are accelerated by the same potential, their de – Broglie wavelengths have the ratio (assume mass of proton = mass of neutron) $x : y$ . Then $x + y$ is:

Discussion

37.	23 How many geometrical isomers are possible for [M A2 B2 C2] ? Draw them.
Answer» 23 How many geometrical isomers are possible for [M A2 B2 C2] ? Draw them.

Discussion

38.	When the ionic radius is decresed of an ion and it is surrounded by water molecule then why the mobility of the ions get decreased?
Answer» When the ionic radius is decresed of an ion and it is surrounded by water molecule then why the mobility of the ions get decreased?

Discussion

39.	63. how to calculate percentage composition for CH4
Answer» 63. how to calculate percentage composition for CH4

Discussion

40.	34.WHAT HYBRID ORBITAL DOES CARBON ATOMS HAVE IN THE GIVEN COMPOUND H3C-C0-CN
Answer» 34.WHAT HYBRID ORBITAL DOES CARBON ATOMS HAVE IN THE GIVEN COMPOUND H3C-C0-CN

Discussion

41.	Oxide that is most acidic is
Answer» Oxide that is most acidic is

Discussion

42.	A mineral consists of an equimolar mixture of the carbonates of two bivalent metals. One metal is present to the extent of 20% by weight. 3.0 g of the mineral on heating lost 1.1 g of CO2. What is the % by weight of the other metal?
Answer» A mineral consists of an equimolar mixture of the carbonates of two bivalent metals. One metal is present to the extent of $20 %$ by weight. $3.0 g$ of the mineral on heating lost $1.1 g$ of $C O_{2}$ . What is the $%$ by weight of the other metal?

Discussion

43.	The amount of heat needed to raise the temperature of 2 moles of an ideal monoatomic gas from 273 K to 373 K, when no work is done is (R = universal gas constant)
Answer» The amount of heat needed to raise the temperature of 2 moles of an ideal monoatomic gas from $273 K$ to $373 K$ , when no work is done is ( $R$ = universal gas constant)

Discussion

44.	An alkene occupies 0.8 L g−1 at STP. Thus, the total number of atoms of carbon and hydrogen in one formula unit are:
Answer» An alkene occupies $0.8 {L g}^{- 1}$ at STP. Thus, the total number of atoms of carbon and hydrogen in one formula unit are:

Discussion

45.	A piston-cylinder device initially contains 0.4m3 of air (to be treated as an ideal gas) at 100 kPa and 80oC. The air is now isothermally compressed to 0.1m3. The work done during this process is kJ.(Take the sign convention such that work done on the system is negative)-55.45
Answer» A piston-cylinder device initially contains $0.4 m^{3}$ of air (to be treated as an ideal gas) at 100 kPa and $80^{o} C$ . The air is now isothermally compressed to $0.1 m^{3}$ . The work done during this process is kJ. (Take the sign convention such that work done on the system is negative) -55.45

Discussion

46.	what is halogenation and sulphonation?
Answer» what is halogenation and sulphonation?

Discussion

47.	Calculate the pOH of a solution at 25^° C thatcontains 1x10-10M of hydronium ions, i.e., H,O(1) 7.000 (2) 4.000 (3) 9.000 (4) 1.000
Answer» Calculate the pOH of a solution at 25^° C thatcontains 1x10-10M of hydronium ions, i.e., H,O(1) 7.000 (2) 4.000 (3) 9.000 (4) 1.000

Discussion

48.	The de Broglie wavelength of 1 mg grain of sand blown by a 20 m/s wind (approxiamately) is:
Answer» The de Broglie wavelength of 1 mg grain of sand blown by a 20 m/s wind (approxiamately) is:

Discussion

49.	When potassium dichromate is treated with dilute sulphuric acid, it forms:
Answer» When potassium dichromate is treated with dilute sulphuric acid, it forms:

Discussion

50.	How do you expect the metallic hydrides to be useful for hydrogen storage? Explain.
Answer» How do you expect the metallic hydrides to be useful for hydrogen storage? Explain.

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

1. Assuming salts to be 90percent dissociated which of the following will have highest osmotic pressure? 1)decimolar aluminium sulphate 2)decimolar barium chloride 3)decimolar sodium sulphate

The plate separation in a parallel plate capacitor is d and plate area is A If it is charged to V volts then calculate the work done in increasing the plate separation to 2d.

InA+B- ionic compound, radii ofA+andB- ions are 180pm and 187 pmrespectively. The crystal structure of this compound will be

Calculate number of moles in 1000u of He

Wavelength of emitted radiation when an electron jumps from 4th orbit to 2nd orbit of helium

Oxidation state of ch3ch2oh

why the Tetrachloro methane is not hydrolysed ?

HClO4 HClO3 HClO2 HCl0 arrange in terms of oxidising power also HIO4 HBrO4 HClO4

What is pauling scale of electronegativity?

the number of electrons with m=0 in an atom with atomic number 33

86.What is coooh group

Forthe following compounds, write structural formulas and IUPAC namesfor all possible isomers having the numberof double or triple bond as indicated:(a)C4H8(one double bond)(b)C5H8(one triple bond)

Iften volumes of dihydrogen gas react with five volumes of dioxygengas, how many volumes of water vapour wouldbe produced?

Among the following, intensive property is:

Which of the following 0.10 m aqueous solutions will have the lowest freezing point?

Regardez l'image et répondez.1. Que porte cette fille?2. Comment est les cheveux?3. De quelle couleur sont ses vêtements?

Potassium crystallizes in a body centred cubic lattice. If, the approximate number of unit cells in 4.0 g potassium is x×1022, then x is (NA=6×1023)

Half cell reaction E0=1.23 V at 298k . O2+4H+ +4e-= 2H2O .assuming po2 =1atm. the potential of half life reaction in pure tempareture at the same tempareture is what?

Which of the following is incorrect?

on being slowly passed through water ,PH_{3 } form bubbles but NH_3 dissolve.

38. Ptcl2.2h2o does not react with AgNO3

AlCl3,MgCl2,CCl4,NaCl,NCL3 arrange the given compounds in increasing order of ionic nature

When 2 moles of an ideal monoatomic gas are heated from 300 K to 600 K at constant pressure. The change in entropy of gas (△S) is:

Which of the chapter we have to do first mole concept or atomic structure?

calculate the equilibrium constant for the reaction :- Mg(s) | Mg2+(0.0001M) || Cu2+(0.0001M) | Cu(s) Given E^° (Mg2+/Mg)= -2.37 V, E^°=+0.34 V.

Consider the below reaction where 6.1 g of benzoic acid is used to get 7.8 g of m-bromo benzoic acid.The percentage yield of the product is_____. (Round off to the nearest integer)[Given : Atomic masses : C : 12.0 u, H : 1.0 u, O : 16.0 u, Br : 80.0 u]

In which of the following reactions does H2O2 act as a reducing agent?

The compound that is not a Lewis acid is:

The half life of a radioactive substance is 13 years. The decay constant is,

The H – O – O bond angle in H2O2 is

Find the odd element from the given electronic configurations.

41. What is the molarity of Sulphuric acid solution, that has a density 1.84g/cc and contains 98% by weight of solute?

In the Ideal-Gas Equation,what is the value of cons†an t 'R'?

For an ideal gas having molar mass M, specific heat at constant pressure can be given as? Given M, R ,

Be3+ and a proton are accelerated by the same potential, their de – Broglie wavelengths have the ratio (assume mass of proton = mass of neutron) x:y. Then x+y is:

23 How many geometrical isomers are possible for [M A2 B2 C2] ? Draw them.

When the ionic radius is decresed of an ion and it is surrounded by water molecule then why the mobility of the ions get decreased?

63. how to calculate percentage composition for CH4

34.WHAT HYBRID ORBITAL DOES CARBON ATOMS HAVE IN THE GIVEN COMPOUND H3C-C0-CN

Oxide that is most acidic is

A mineral consists of an equimolar mixture of the carbonates of two bivalent metals. One metal is present to the extent of 20% by weight. 3.0 g of the mineral on heating lost 1.1 g of CO2. What is the % by weight of the other metal?

The amount of heat needed to raise the temperature of 2 moles of an ideal monoatomic gas from 273 K to 373 K, when no work is done is (R = universal gas constant)

An alkene occupies 0.8 L g−1 at STP. Thus, the total number of atoms of carbon and hydrogen in one formula unit are:

A piston-cylinder device initially contains 0.4m3 of air (to be treated as an ideal gas) at 100 kPa and 80oC. The air is now isothermally compressed to 0.1m3. The work done during this process is kJ.(Take the sign convention such that work done on the system is negative)-55.45

what is halogenation and sulphonation?

Calculate the pOH of a solution at 25^° C thatcontains 1x10-10M of hydronium ions, i.e., H,O(1) 7.000 (2) 4.000 (3) 9.000 (4) 1.000

The de Broglie wavelength of 1 mg grain of sand blown by a 20 m/s wind (approxiamately) is:

When potassium dichromate is treated with dilute sulphuric acid, it forms:

How do you expect the metallic hydrides to be useful for hydrogen storage? Explain.