10223 + Interview Questions in Chemistry Page 107 InterviewSolution

5301.	25.Why do very small sized particles do not scatter a beam of light passing through the solution? Why is path of light not visible in a true solution?]
Answer» 25.Why do very small sized particles do not scatter a beam of light passing through the solution? Why is path of light not visible in a true solution?]

Discussion

5302.	Differentiate between chlorine atom and chloride ions . ( 3 points )
Answer» Differentiate between chlorine atom and chloride ions . ( 3 points )

Discussion

5303.	Question 14 Write the cations and anions present (if any) in the following compounds (a) CH3COONa (b) NaCl (c) H2 (d) NH4NO3
Answer» Question 14 Write the cations and anions present (if any) in the following compounds (a) $C H_{3} C O O N a$ (b) $N a C l$ (c) $H_{2}$ (d) $N H_{4} N O_{3}$

Discussion

5304.	Is this formula r =r⁰+(A)³ applicable for elements or the one which is having mass of cube number
Answer» Is this formula r =r⁰+(A)³ applicable for elements or the one which is having mass of cube number

Discussion

5305.	22.What is the difference between valence shell, penultimate shell and anti-penultimate shell?
Answer» 22.What is the difference between valence shell, penultimate shell and anti-penultimate shell?

Discussion

5306.	ntIf we say that the temperature of a particular area is -15 degree Celsius then what will be the same temperature defined as in terms of Kelvin. Will we define it as zero Kelvin or will the Kelvin scale won't be validated there??n
Answer» ntIf we say that the temperature of a particular area is -15 degree Celsius then what will be the same temperature defined as in terms of Kelvin. Will we define it as zero Kelvin or will the Kelvin scale won't be validated there??n

Discussion

5307.	What is the difference between substance and pure substance?
Answer» What is the difference between substance and pure substance?

Discussion

5308.	Name the process that happens when:(a) Dry ice is kept at room temperature and at one atmospheric pressure.(b) A potassium permanganate crystal is in a beaker and water is poured into the beaker by stirring.(c) An acetone bottle is left open and the bottle becomes empty.(d) Milk is churned to separate cream from it.
Answer» Name the process that happens when: (a) Dry ice is kept at room temperature and at one atmospheric pressure. (b) A potassium permanganate crystal is in a beaker and water is poured into the beaker by stirring. (c) An acetone bottle is left open and the bottle becomes empty. (d) Milk is churned to separate cream from it.

5308.

Name the process that happens when:(a) Dry ice is kept at room temperature and at one atmospheric pressure.(b) A potassium permanganate crystal is in a beaker and water is poured into the beaker by stirring.(c) An acetone bottle is left open and the bottle becomes empty.(d) Milk is churned to separate cream from it.

Answer»

Name the process that happens when:

(a) Dry ice is kept at room temperature and at one atmospheric pressure.

(b) A potassium permanganate crystal is in a beaker and water is poured into the beaker by stirring.

(c) An acetone bottle is left open and the bottle becomes empty.

(d) Milk is churned to separate cream from it.

Discussion

5309.	a diatomic gas of molecular mass 40g/mol is filled in a rigid container at temperature 30 celcius it is moving with velocity 200m/s if it is suddenly stopped the rise in temperature of the gas is
Answer» a diatomic gas of molecular mass 40g/mol is filled in a rigid container at temperature 30 celcius it is moving with velocity 200m/s if it is suddenly stopped the rise in temperature of the gas is

Discussion

5310.	5. The decomposition of a substance follows first order kinetics.If it's concentration is reduced to 1/8 of it's initial value in 12 minutes,the rate constant of the decomposition system is?
Answer» 5. The decomposition of a substance follows first order kinetics.If it's concentration is reduced to 1/8 of it's initial value in 12 minutes,the rate constant of the decomposition system is?

Discussion

5311.	Which of the following is not applicable to solutions?
Answer» Which of the following is not applicable to solutions?

Discussion

5312.	It is said, "CO2"contributes to global warming. Explain.
Answer» It is said, $" C O_{2} "$ contributes to global warming. Explain.

Discussion

5313.	Which of the following are the postulates of Thomson’s model of an atom?
Answer» Which of the following are the postulates of Thomson’s model of an atom?

Discussion

5314.	Calculate the volume of 340 g of NH3 at STP.
Answer» Calculate the volume of 340 g of ${NH}_{3}$ at STP.

Discussion

5315.	7. What is the Origin of anode and cathode rays?
Answer» 7. What is the Origin of anode and cathode rays?

Discussion

5316.	Which of the following reagent can be used to convert benzene diazonium chloride to phenol?(1) H3PO4(2) dil. H2SO4(3) H2O(4) All of these
Answer» Which of the following reagent can be used to convert benzene diazonium chloride to phenol? (1) H3PO4 (2) dil. H2SO4 (3) H2O (4) All of these

Discussion

5317.	8lf the masses of Cr and O are in the ratio 13 12in CrOa, then the ratio of O that combines with thesame mass of Cr in Cr2O3 and Cr2O, is(3) 3:7(4) 2:59
Answer» 8lf the masses of Cr and O are in the ratio 13 12in CrOa, then the ratio of O that combines with thesame mass of Cr in Cr2O3 and Cr2O, is(3) 3:7(4) 2:59

Discussion

5318.	CaO + H2O → Ca(OH)2 is an example of a _______ reaction.
Answer» CaO + H₂O → Ca(OH)₂ is an example of a _______ reaction.

Discussion

5319.	Hydrogen exists in nature in the ______ state at ordinary temperature
Answer» Hydrogen exists in nature in the ______ state at ordinary temperature

Discussion

5320.	what is the molecular mass of a subs†an ce, each molecule of which contains 4 atoms of carbon and 10 atoms of hydrogen?
Answer» what is the molecular mass of a subs†an ce, each molecule of which contains 4 atoms of carbon and 10 atoms of hydrogen?

Discussion

5321.	Give the names and structural formula of the first three members of homologous series of alkene.
Answer» Give the names and structural formula of the first three members of homologous series of alkene.

Discussion

5322.	A substance (atom, ion or molecule) which can readily loose electrons to other substances is called
Answer» A substance (atom, ion or molecule) which can readily loose electrons to other substances is called

Discussion

5323.	How is aquatic life benefitted by the fact that water has the maximum density at 4∘C?
Answer» How is aquatic life benefitted by the fact that water has the maximum density at $4^{\circ} C$ ?

Discussion

5324.	Calculate the number of oxygen atoms in 0.1 mole of sulphur dioxide molecules.
Answer» Calculate the number of oxygen atoms in 0.1 mole of sulphur dioxide molecules.

Discussion

5325.	ntWhich of the following have maximum positive electron gan enthalpy ?n nt(1) F- (2) O-n nt(3) Na+ (4) Mg2+n
Answer» ntWhich of the following have maximum positive electron gan enthalpy ?n nt(1) F- (2) O-n nt(3) Na+ (4) Mg2+n

Discussion

5326.	A solution is prepared by dissolving 10 g of salt in 100 g of water. Calculate the mass percentage of the solution.9.09
Answer» A solution is prepared by dissolving 10 g of salt in 100 g of water. Calculate the mass percentage of the solution. 9.09

Discussion

5327.	Does puring rolling is always applicable for v=rw??
Answer» Does puring rolling is always applicable for v=rw??

Discussion

5328.	Detail exploitation of solubility curve
Answer» Detail exploitation of solubility curve

Discussion

5329.	What is true solution
Answer» What is true solution

Discussion

5330.	8. Why Pb2+ is more stable than Pb4+ ?
Answer» 8. Why Pb2+ is more stable than Pb4+ ?

Discussion

5331.	An element Z contains two naturally occurring isotopes 35Z17 and 37Z17. If the average atomic mass of this element be 35.5 u, calculate the percentage of two isotopes.
Answer» An element Z contains two naturally occurring isotopes ³⁵Z₁₇ and³⁷Z₁₇. If the average atomic mass of this element be 35.5 u, calculate the percentage of two isotopes.

Discussion

5332.	1. At what temp. The rms velocity of o2 will be same as that of methane at 27`c A 54`c B 600k why 54`c is wrong
Answer» 1. At what temp. The rms velocity of o2 will be same as that of methane at 27`c A 54`c B 600k why 54`c is wrong

Discussion

5333.	The number of neutrons present in the element AZX is given by ________.
Answer» The number of neutrons present in the element $_{Z}^{A} X$ is given by ________.

Discussion

5334.	20. If f(x) = is an odd periodic function with period 2, then f(4) equals
Answer» 20. If f(x) = is an odd periodic function with period 2, then f(4) equals

Discussion

5335.	__________ are atoms that have the same mass number but different atomic numbers.
Answer» __________ are atoms that have the same mass number but different atomic numbers.

Discussion

5336.	The chemical formula of baking soda is
Answer» The chemical formula of baking soda is

Discussion

5337.	Which of the following substance is not an example of a liquid?
Answer» Which of the following substance is not an example of a liquid?

Discussion

5338.	What is salute and solvent ?
Answer» What is salute and solvent ?

Discussion

5339.	Which alkyne of minimum molecular weight does react with ammonical cuprous chloride?
Answer» Which alkyne of minimum molecular weight does react with ammonical cuprous chloride?

Discussion

5340.	Is plaster of Paris a compound or a mixture
Answer» Is plaster of Paris a compound or a mixture

Discussion

5341.	What is the solubility order of liF licl libr and liI?
Answer» What is the solubility order of liF licl libr and liI?

Discussion

5342.	what is relative atomic weight?
Answer» what is relative atomic weight?

Discussion

5343.	25.Oxidation number of chromium atom in CrO5 and K3CrO8 respectively is
Answer» 25.Oxidation number of chromium atom in CrO5 and K3CrO8 respectively is

Discussion

5344.	When 10gm of a substance is burnt, all the energy released during combustion is used to raise the temperature of the liquid from 298K to 298.5K . If heat capacity of liquid is 10J/C . Find heat released when one mole of substance is combusted.( Molar mass of substance=40).
Answer» When 10gm of a substance is burnt, all the energy released during combustion is used to raise the temperature of the liquid from 298K to 298.5K . If heat capacity of liquid is 10J/C . Find heat released when one mole of substance is combusted.( Molar mass of substance=40).

Discussion

5345.	A compound of Xe and F is found to have 53.3% Xe (At.mass = 133) .oxidation number of Xe in this compound is ?
Answer» A compound of Xe and F is found to have 53.3% Xe (At.mass = 133) .oxidation number of Xe in this compound is ?

Discussion

5346.	What are the uses of water gas
Answer» What are the uses of water gas

Discussion

5347.	Question 23Which of the following is not a straight chain hydrocarbon?(a)(b)(c)(d)
Answer» Question 23 Which of the following is not a straight chain hydrocarbon? (a) (b) (c) (d)

Discussion

5348.	What are the characteristics exhibited by a pure substance?
Answer» What are the characteristics exhibited by a pure substance?

Discussion

5349.	the unit cell cube length for LiCl (just like nacl structure ) is 5.14 Angstrong . assuming anion anion contact , the ionic radius for chloride ion is-
Answer» the unit cell cube length for LiCl (just like nacl structure ) is 5.14 Angstrong . assuming anion anion contact , the ionic radius for chloride ion is-

Discussion

5350.	Which of the following is/are solutions?
Answer» Which of the following is/are solutions?

Discussion

Explore topic-wise InterviewSolutions in .

25.Why do very small sized particles do not scatter a beam of light passing through the solution? Why is path of light not visible in a true solution?]

Differentiate between chlorine atom and chloride ions . ( 3 points )

Question 14 Write the cations and anions present (if any) in the following compounds (a) CH3COONa (b) NaCl (c) H2 (d) NH4NO3

Is this formula r =r⁰+(A)³ applicable for elements or the one which is having mass of cube number

22.What is the difference between valence shell, penultimate shell and anti-penultimate shell?

ntIf we say that the temperature of a particular area is -15 degree Celsius then what will be the same temperature defined as in terms of Kelvin. Will we define it as zero Kelvin or will the Kelvin scale won't be validated there??n

What is the difference between substance and pure substance?

a diatomic gas of molecular mass 40g/mol is filled in a rigid container at temperature 30 celcius it is moving with velocity 200m/s if it is suddenly stopped the rise in temperature of the gas is

5. The decomposition of a substance follows first order kinetics.If it's concentration is reduced to 1/8 of it's initial value in 12 minutes,the rate constant of the decomposition system is?

Which of the following is not applicable to solutions?

It is said, "CO2"contributes to global warming. Explain.

Which of the following are the postulates of Thomson’s model of an atom?

Calculate the volume of 340 g of NH3 at STP.

7. What is the Origin of anode and cathode rays?

Which of the following reagent can be used to convert benzene diazonium chloride to phenol?(1) H3PO4(2) dil. H2SO4(3) H2O(4) All of these

8lf the masses of Cr and O are in the ratio 13 12in CrOa, then the ratio of O that combines with thesame mass of Cr in Cr2O3 and Cr2O, is(3) 3:7(4) 2:59

CaO + H2O → Ca(OH)2 is an example of a _______ reaction.

Hydrogen exists in nature in the ______ state at ordinary temperature

what is the molecular mass of a subs†an ce, each molecule of which contains 4 atoms of carbon and 10 atoms of hydrogen?

Give the names and structural formula of the first three members of homologous series of alkene.

A substance (atom, ion or molecule) which can readily loose electrons to other substances is called

How is aquatic life benefitted by the fact that water has the maximum density at 4∘C?

Calculate the number of oxygen atoms in 0.1 mole of sulphur dioxide molecules.

ntWhich of the following have maximum positive electron gan enthalpy ?n nt(1) F- (2) O-n nt(3) Na+ (4) Mg2+n

A solution is prepared by dissolving 10 g of salt in 100 g of water. Calculate the mass percentage of the solution.9.09

Does puring rolling is always applicable for v=rw??

Detail exploitation of solubility curve

What is true solution

8. Why Pb2+ is more stable than Pb4+ ?

An element Z contains two naturally occurring isotopes 35Z17 and 37Z17. If the average atomic mass of this element be 35.5 u, calculate the percentage of two isotopes.

1. At what temp. The rms velocity of o2 will be same as that of methane at 27`c A 54`c B 600k why 54`c is wrong

The number of neutrons present in the element AZX is given by ________.

20. If f(x) = is an odd periodic function with period 2, then f(4) equals

__________ are atoms that have the same mass number but different atomic numbers.

The chemical formula of baking soda is

Which of the following substance is not an example of a liquid?

What is salute and solvent ?

Which alkyne of minimum molecular weight does react with ammonical cuprous chloride?

Is plaster of Paris a compound or a mixture

What is the solubility order of liF licl libr and liI?

what is relative atomic weight?

25.Oxidation number of chromium atom in CrO5 and K3CrO8 respectively is

When 10gm of a substance is burnt, all the energy released during combustion is used to raise the temperature of the liquid from 298K to 298.5K . If heat capacity of liquid is 10J/C . Find heat released when one mole of substance is combusted.( Molar mass of substance=40).

A compound of Xe and F is found to have 53.3% Xe (At.mass = 133) .oxidation number of Xe in this compound is ?

What are the uses of water gas

Question 23Which of the following is not a straight chain hydrocarbon?(a)(b)(c)(d)

What are the characteristics exhibited by a pure substance?

the unit cell cube length for LiCl (just like nacl structure ) is 5.14 Angstrong . assuming anion anion contact , the ionic radius for chloride ion is-

Which of the following is/are solutions?