10223 + Interview Questions in Chemistry Page 25 InterviewSolution

1201.	17.Mole fraction of urea in aq solutio is 0.250.Then find molatity of solution
Answer» 17.Mole fraction of urea in aq solutio is 0.250.Then find molatity of solution

Discussion

1202.	A proton and an alpha particle are subjected to the same potential , then what is the the ratio of their moment ?
Answer» A proton and an alpha particle are subjected to the same potential , then what is the the ratio of their moment ?

Discussion

1203.	Explain photochemical reaction?
Answer» Explain photochemical reaction?

Discussion

1204.	19. Enthalpy of solution for MgSO4(s) and MgSO47H2O (s) are -20.3kcal and 4.8kcal. Calculate hydration enthalpy of MgSO4
Answer» 19. Enthalpy of solution for MgSO4(s) and MgSO47H2O (s) are -20.3kcal and 4.8kcal. Calculate hydration enthalpy of MgSO4

Discussion

1205.	Why is an hydrogen atom satisfied with an duplet and does not want a octet
Answer» Why is an hydrogen atom satisfied with an duplet and does not want a octet

Discussion

1206.	3. calculate the mole fraction of ethanol and water in a sample of rectified spirit which contain 92% by mass
Answer» 3. calculate the mole fraction of ethanol and water in a sample of rectified spirit which contain 92% by mass

Discussion

1207.	Which of the given statements is correct about the process shown in the figure?
Answer» Which of the given statements is correct about the process shown in the figure?

1207.

Which of the given statements is correct about the process shown in the figure?

Answer»

Which of the given statements is correct about the process shown in the figure?

Discussion

1208.	What are polar and non polar compounds ?
Answer» What are polar and non polar compounds ?

Discussion

1209.	Question 7 (a)Explain why the following are made of thermosetting plastics.Saucepan handles.
Answer» Question 7 (a) Explain why the following are made of thermosetting plastics. Saucepan handles.

1209.

Question 7 (a)Explain why the following are made of thermosetting plastics.Saucepan handles.

Answer»

Question 7 (a)

Explain why the following are made of thermosetting plastics.

Saucepan handles.

Discussion

1210.	X and Y in the below reaction, respectively could be:
Answer» X and Y in the below reaction, respectively could be:

1210.

X and Y in the below reaction, respectively could be:

Answer»

X and Y in the below reaction, respectively could be:

Discussion

1211.	Choose the IUPAC name of K2[Fe(NC)3Cl2(NH3)2].
Answer» Choose the $I U P A C$ name of $K_{2} [F e (N C)_{3} C l_{2} (N H_{3})_{2}]$ .

Discussion

1212.	The dimensional formula of INTEGRAL tdt isOptions:A. [M0L0T1]B. [M0L0T0} C. [M0L0T2]D. [M0L1T1]
Answer» The dimensional formula of INTEGRAL tdt is Options: A. [M0L0T1] B. [M0L0T0} C. [M0L0T2] D. [M0L1T1]

Discussion

1213.	What will called the metal with both the properties of metals and non-metals?
Answer» What will called the metal with both the properties of metals and non-metals?

Discussion

1214.	If We throw water on the moon then will the water float?
Answer» If We throw water on the moon then will the water float?

Discussion

1215.	What is meant by dyes? Write their uses.
Answer» What is meant by dyes? Write their uses.

Discussion

1216.	The simplest formula of a compound containing 50% of element x(atomic weight-10) &50% of element y(atomic weight-20) is
Answer» The simplest formula of a compound containing 50% of element x(atomic weight-10) &50% of element y(atomic weight-20) is

Discussion

1217.	why is time proportional to n^3 in bohr model?
Answer» why is time proportional to n^3 in bohr model?

Discussion

1218.	How to identify polar or non polar molecule
Answer» How to identify polar or non polar molecule

Discussion

1219.	43. 1g of hydrogen is heated to combine with 80g of bromine and 1g of another metal (Valency=2) with 4g of bromine. The atomic mass of metal is? (1) 20 (2) 30 (3) 40 (4) 50
Answer» 43. 1g of hydrogen is heated to combine with 80g of bromine and 1g of another metal (Valency=2) with 4g of bromine. The atomic mass of metal is? (1) 20 (2) 30 (3) 40 (4) 50

Discussion

1220.	gravitational potential in a region is given by (3x+4y+12z) .the modulus of gravitational field at x=1 y=0 z=3 is
Answer» gravitational potential in a region is given by (3x+4y+12z) .the modulus of gravitational field at x=1 y=0 z=3 is

Discussion

1221.	Question 39During an experiment, the students were asked to prepare a 10% (mass/mass) solution of sugar in water. Ramesh dissolved 10 g of sugar in 100 g of water while Sarika prepared it by dissolving 10 g of sugar in water to make 100 g of the solution.(a) Are the two solutions of the same concentration?(b) Compare the mass % of the two solutions.
Answer» Question 39 During an experiment, the students were asked to prepare a 10% (mass/mass) solution of sugar in water. Ramesh dissolved 10 g of sugar in 100 g of water while Sarika prepared it by dissolving 10 g of sugar in water to make 100 g of the solution. (a) Are the two solutions of the same concentration? (b) Compare the mass % of the two solutions.

Discussion

1222.	33. When a rod is heated but prevented from expanding, the compressional force developed is independent of
Answer» 33. When a rod is heated but prevented from expanding, the compressional force developed is independent of

Discussion

1223.	The random movement of particles is the most in:
Answer» The random movement of particles is the most in:

Discussion

1224.	36 In resonating structures of benzene armomaticity is destroyed then how does resonance contributes to stability?
Answer» 36 In resonating structures of benzene armomaticity is destroyed then how does resonance contributes to stability?

Discussion

1225.	Why does a gas fills the vessel completely in which it is kept
Answer» Why does a gas fills the vessel completely in which it is kept

Discussion

1226.	Law of reciprocal proportions
Answer» Law of reciprocal proportions

Discussion

1227.	What is the physical and chemical method of separation of mixtures
Answer» What is the physical and chemical method of separation of mixtures

Discussion

1228.	What is actually corona discharging?
Answer» What is actually corona discharging?

Discussion

1229.	What is the atomicity of Silver and what is it's valency ?
Answer» What is the atomicity of Silver and what is it's valency ?

Discussion

1230.	Question 36.A student prepared solution of (i) an acid and (ii) a base in two separate beakers. She forgot to label the solutions and litmus paper is not available in the laboratory. Since, both the solutions are colourless, how will she distinguish between the two ?
Answer» Question 36. A student prepared solution of (i) an acid and (ii) a base in two separate beakers. She forgot to label the solutions and litmus paper is not available in the laboratory. Since, both the solutions are colourless, how will she distinguish between the two ?

Discussion

1231.	Elements with configuration 2, 8, 2 and 2, 7 are placed in modern periodic table. Find out:1. the valency of the elements mentioned above.2. the period and group of the above elements.
Answer» Elements with configuration 2, 8, 2 and 2, 7 are placed in modern periodic table. Find out: 1. the valency of the elements mentioned above. 2. the period and group of the above elements.

Discussion

1232.	Salicylic acid on treatment with nitrating mixture produces
Answer» Salicylic acid on treatment with nitrating mixture produces

Discussion

1233.	Q97) Which of the following statements are true about neutrinos? 1.Neutrinos will help in checking nuclear proliferation. 2.They might help creating an earthquake warning system. 3.Exposure to neutrinos is harmful to humans.
Answer» Q97) Which of the following statements are true about neutrinos? 1.Neutrinos will help in checking nuclear proliferation. 2.They might help creating an earthquake warning system. 3.Exposure to neutrinos is harmful to humans.

1233.

Q97) Which of the following statements are true about neutrinos? 1.Neutrinos will help in checking nuclear proliferation. 2.They might help creating an earthquake warning system. 3.Exposure to neutrinos is harmful to humans.

Answer»

Q97) Which of the following statements are true about neutrinos?

1.Neutrinos will help in checking nuclear proliferation.

2.They might help creating an earthquake warning system.

3.Exposure to neutrinos is harmful to humans.

Discussion

1234.	What is Maxwell wave theory?
Answer» What is Maxwell wave theory?

Discussion

1235.	Bromine occurs in nature mainly in the form of two isotopes Br3579 and Br3581. If the abundance of Br3579 is isotope is 49.7% and that of Br3581 isotope is 50.3% calculate the average atomic mass of bromine.
Answer» Bromine occurs in nature mainly in the form of two isotopes ${}_{35}^{79}{Br}$ and ${}_{35}^{81}{Br}$ . If the abundance of ${}_{35}^{79}{Br}$ is isotope is 49.7% and that of ${}_{35}^{81}{Br}$ isotope is 50.3% calculate the average atomic mass of bromine.

Discussion

1236.	What is the difference between the oxidation number of Mn in KMnO4 and Mn2O7?
Answer» What is the difference between the oxidation number of Mn in $K M n O_{4}$ and $M n_{2} O_{7}$ ?

Discussion

1237.	If an orbital can assumed to accomodate a maximum of 3 electrons, then calculate the number of elements in the 5th period
Answer» If an orbital can assumed to accomodate a maximum of 3 electrons, then calculate the number of elements in the 5th period

Discussion

1238.	What is the difference between molecular mass and formula unit mass???
Answer» What is the difference between molecular mass and formula unit mass???

Discussion

1239.	for a reaction r gives p the rate of reaction becomes on doubling the concentration the order of the reaction is ?
Answer» for a reaction r gives p the rate of reaction becomes on doubling the concentration the order of the reaction is ?

Discussion

1240.	Write two physical properties for each one.a. Diamondb. Charcoal
Answer» Write two physical properties for each one. a. Diamond b. Charcoal

Discussion

1241.	What is the molecular mass of H2
Answer» What is the molecular mass of H2

Discussion

1242.	What is the formulae of compound: 1)Aluminium phosphate 2) aluminium nitride 3) Sodium Peroxide 4) magnesium hydride 5) Ammonium Phosphate 6) calcium phosphide 7) calcium phosphate 8) aluminium chloride 9) aluminium carbide 10) magnesium nitride
Answer» What is the formulae of compound: 1)Aluminium phosphate 2) aluminium nitride 3) Sodium Peroxide 4) magnesium hydride 5) Ammonium Phosphate 6) calcium phosphide 7) calcium phosphate 8) aluminium chloride 9) aluminium carbide 10) magnesium nitride

1242.

What is the formulae of compound: 1)Aluminium phosphate 2) aluminium nitride 3) Sodium Peroxide 4) magnesium hydride 5) Ammonium Phosphate 6) calcium phosphide 7) calcium phosphate 8) aluminium chloride 9) aluminium carbide 10) magnesium nitride

Answer»

What is the formulae of compound:

1)Aluminium phosphate

2) aluminium nitride

3) Sodium Peroxide

4) magnesium hydride

5) Ammonium Phosphate

6) calcium phosphide

7) calcium phosphate

8) aluminium chloride

9) aluminium carbide

10) magnesium nitride

Discussion

1243.	Conversion of ice into water and water into ice is an example of change that can be reversed. Give four more examples where you can say that the changes can be reversed.
Answer» Conversion of ice into water and water into ice is an example of change that can be reversed. Give four more examples where you can say that the changes can be reversed.

Discussion

1244.	Describe by experiment the relationship between rate of diffusion and density of liquid
Answer» Describe by experiment the relationship between rate of diffusion and density of liquid

Discussion

1245.	The osmotic pressure of an aqueous solution of sucrose is 2.47 atm at 303 K and the molar volume of the water present is 18.10 cm3. Calculate the elevation in boiling point of the solution. Given latent heat of vaporisation =540cal/g. Assume volume of solvent equal to volume of solution.
Answer» The osmotic pressure of an aqueous solution of sucrose is 2.47 atm at 303 K and the molar volume of the water present is 18.10 cm3. Calculate the elevation in boiling point of the solution. Given latent heat of vaporisation =540cal/g. Assume volume of solvent equal to volume of solution.

Discussion

1246.	32. In aqueous solution 5percent by mass of urea and 10percent by mass of glucose is present. If cryoscopic constant of water is 1.86k kg/mole then calculate the freezing point.
Answer» 32. In aqueous solution 5percent by mass of urea and 10percent by mass of glucose is present. If cryoscopic constant of water is 1.86k kg/mole then calculate the freezing point.

Discussion

1247.	Calculate the number of oxygen atoms in 8 grams of oxygen
Answer» Calculate the number of oxygen atoms in 8 grams of oxygen

Discussion

1248.	Name the scientist who first measured the e/m ratio of an electron.
Answer» Name the scientist who first measured the e/m ratio of an electron.

Discussion

1249.	Question 2Which has more number of atoms, 100 grams of sodium or 100 grams of iron (given, atomic mass of Na = 23 u, Fe = 56 u)?
Answer» Question 2 Which has more number of atoms, 100 grams of sodium or 100 grams of iron (given, atomic mass of Na = 23 u, Fe = 56 u)?

Discussion

1250.	If the radius of the hydrogen atom is 53 pm, the radius of the He+ ion is closest to
Answer» If the radius of the hydrogen atom is 53 pm, the radius of the He $^{+}$ ion is closest to

Discussion

Explore topic-wise InterviewSolutions in .

17.Mole fraction of urea in aq solutio is 0.250.Then find molatity of solution

A proton and an alpha particle are subjected to the same potential , then what is the the ratio of their moment ?

Explain photochemical reaction?

19. Enthalpy of solution for MgSO4(s) and MgSO47H2O (s) are -20.3kcal and 4.8kcal. Calculate hydration enthalpy of MgSO4

Why is an hydrogen atom satisfied with an duplet and does not want a octet

3. calculate the mole fraction of ethanol and water in a sample of rectified spirit which contain 92% by mass

Which of the given statements is correct about the process shown in the figure?

What are polar and non polar compounds ?

Question 7 (a)Explain why the following are made of thermosetting plastics.Saucepan handles.

X and Y in the below reaction, respectively could be:

Choose the IUPAC name of K2[Fe(NC)3Cl2(NH3)2].

The dimensional formula of INTEGRAL tdt isOptions:A. [M0L0T1]B. [M0L0T0} C. [M0L0T2]D. [M0L1T1]

What will called the metal with both the properties of metals and non-metals?

If We throw water on the moon then will the water float?

What is meant by dyes? Write their uses.

The simplest formula of a compound containing 50% of element x(atomic weight-10) &50% of element y(atomic weight-20) is

why is time proportional to n^3 in bohr model?

How to identify polar or non polar molecule

43. 1g of hydrogen is heated to combine with 80g of bromine and 1g of another metal (Valency=2) with 4g of bromine. The atomic mass of metal is? (1) 20 (2) 30 (3) 40 (4) 50

gravitational potential in a region is given by (3x+4y+12z) .the modulus of gravitational field at x=1 y=0 z=3 is

33. When a rod is heated but prevented from expanding, the compressional force developed is independent of

The random movement of particles is the most in:

36 In resonating structures of benzene armomaticity is destroyed then how does resonance contributes to stability?

Why does a gas fills the vessel completely in which it is kept

Law of reciprocal proportions

What is the physical and chemical method of separation of mixtures

What is actually corona discharging?

What is the atomicity of Silver and what is it's valency ?

Question 36.A student prepared solution of (i) an acid and (ii) a base in two separate beakers. She forgot to label the solutions and litmus paper is not available in the laboratory. Since, both the solutions are colourless, how will she distinguish between the two ?

Elements with configuration 2, 8, 2 and 2, 7 are placed in modern periodic table. Find out:1. the valency of the elements mentioned above.2. the period and group of the above elements.

Salicylic acid on treatment with nitrating mixture produces

Q97) Which of the following statements are true about neutrinos? 1.Neutrinos will help in checking nuclear proliferation. 2.They might help creating an earthquake warning system. 3.Exposure to neutrinos is harmful to humans.

What is Maxwell wave theory?

Bromine occurs in nature mainly in the form of two isotopes Br3579 and Br3581. If the abundance of Br3579 is isotope is 49.7% and that of Br3581​ isotope is 50.3% calculate the average atomic mass of bromine.

What is the difference between the oxidation number of Mn in KMnO4 and Mn2O7?

If an orbital can assumed to accomodate a maximum of 3 electrons, then calculate the number of elements in the 5th period

What is the difference between molecular mass and formula unit mass???

for a reaction r gives p the rate of reaction becomes on doubling the concentration the order of the reaction is ?

Write two physical properties for each one.a. Diamondb. Charcoal

What is the molecular mass of H2

What is the formulae of compound: 1)Aluminium phosphate 2) aluminium nitride 3) Sodium Peroxide 4) magnesium hydride 5) Ammonium Phosphate 6) calcium phosphide 7) calcium phosphate 8) aluminium chloride 9) aluminium carbide 10) magnesium nitride

Conversion of ice into water and water into ice is an example of change that can be reversed. Give four more examples where you can say that the changes can be reversed.

Describe by experiment the relationship between rate of diffusion and density of liquid

The osmotic pressure of an aqueous solution of sucrose is 2.47 atm at 303 K and the molar volume of the water present is 18.10 cm3. Calculate the elevation in boiling point of the solution. Given latent heat of vaporisation =540cal/g. Assume volume of solvent equal to volume of solution.

32. In aqueous solution 5percent by mass of urea and 10percent by mass of glucose is present. If cryoscopic constant of water is 1.86k kg/mole then calculate the freezing point.

Calculate the number of oxygen atoms in 8 grams of oxygen

Name the scientist who first measured the e/m ratio of an electron.

Question 2Which has more number of atoms, 100 grams of sodium or 100 grams of iron (given, atomic mass of Na = 23 u, Fe = 56 u)?

If the radius of the hydrogen atom is 53 pm, the radius of the He+ ion is closest to

Bromine occurs in nature mainly in the form of two isotopes Br3579 and Br3581. If the abundance of Br3579 is isotope is 49.7% and that of Br3581 isotope is 50.3% calculate the average atomic mass of bromine.