10223 + Interview Questions in Chemistry Page 115 InterviewSolution

5701.	A gas occupies 3 litres at 0∘C . What volume will it occupy at - 20∘C pressure remaining constant?
Answer» A gas occupies 3 litres at $0^{\circ} C$ . What volume will it occupy at - $20^{\circ} C$ pressure remaining constant?

Discussion

5702.	What was the basis for the proposal of dalton's atomic theory.
Answer» What was the basis for the proposal of dalton's atomic theory.

Discussion

5703.	Where does the balloon man stand? What happens to the balloons when there is a wind? What does the child like to see the balloon man do?
Answer» Where does the balloon man stand? What happens to the balloons when there is a wind? What does the child like to see the balloon man do?

Discussion

5704.	Question 4Arrange the following substances in increasing order of forces of attraction between the particles— water, sugar, oxygen.
Answer» Question 4 Arrange the following substances in increasing order of forces of attraction between the particles— water, sugar, oxygen.

Discussion

5705.	Which of the statements are incorrect about potassium permanganate?
Answer» Which of the statements are incorrect about potassium permanganate?

Discussion

5706.	71.What is meant when we say 'molten NaCl'?
Answer» 71.What is meant when we say 'molten NaCl'?

Discussion

5707.	What is meant by half life of an element??
Answer» What is meant by half life of an element??

Discussion

5708.	Which forces hold together neutrons and protons in the nucleus?
Answer» Which forces hold together neutrons and protons in the nucleus?

Discussion

5709.	Which postulate of Dalton’s atomic theory is the result of the law of conservation of mass?
Answer» Which postulate of Dalton’s atomic theory is the result of the law of conservation of mass?

Discussion

5710.	What is the group number of zn
Answer» What is the group number of zn

Discussion

5711.	li is strongest reducing agent then li+ is strongest/weakest-reducing/oxidiging agent
Answer» li is strongest reducing agent then li+ is strongest/weakest-reducing/oxidiging agent

Discussion

5712.	500 ml of 0.3 M AgNO3 are added to 600 ml of 0.5 M KI solution. The ions which will move towards the cathode and anode respectively are(1)AgI/Ag+ and NO3–(2)AgI/I– and K+(3)K+ and AgI/I–(4)AgI/K+ and I–
Answer» 500 ml of 0.3 M AgNO3 are added to 600 ml of 0.5 M KI solution. The ions which will move towards the cathode and anode respectively are (1)AgI/Ag+ and NO3– (2)AgI/I– and K+ (3)K+ and AgI/I– (4)AgI/K+ and I–

Discussion

5713.	How we will separate a mixture of salt and sugar?
Answer» How we will separate a mixture of salt and sugar?

Discussion

5714.	16. Polarising power: C -4 N-3 O-2 F-1 F-1 cl-1 br-1 I-1 Covalent character: Ch4 Nh3 H2o HF Polarising power: Li+ Na+ k+ Rb+ Cu+ Na+ Zn+2 Mg+2
Answer» 16. Polarising power: C -4 N-3 O-2 F-1 F-1 cl-1 br-1 I-1 Covalent character: Ch4 Nh3 H2o HF Polarising power: Li+ Na+ k+ Rb+ Cu+ Na+ Zn+2 Mg+2

Discussion

5715.	Does the change in source bring changes in properties of the substance?
Answer» Does the change in source bring changes in properties of the substance?

Discussion

5716.	A)A boat having a length of 3Mtrs and breadth 2Mts is floating on a lake. The boat sinks by 1cm when a man gets on it. The mass of the man is ?
Answer» A)A boat having a length of 3Mtrs and breadth 2Mts is floating on a lake. The boat sinks by 1cm when a man gets on it. The mass of the man is ?

Discussion

5717.	Which of the following is most acidic? (a)picric acid (b)formic acid (c)benzoic acid (d)acetic acid
Answer» Which of the following is most acidic? (a)picric acid (b)formic acid (c)benzoic acid (d)acetic acid

Discussion

5718.	The component of a vector is(A)always less than its magnitude(B)always greater than its magnitude(C)always equal to its magnitude(D)none of these.
Answer» The component of a vector is (A)always less than its magnitude (B)always greater than its magnitude (C)always equal to its magnitude (D)none of these.

Discussion

5719.	radius of a particular nucleus is calculated by projection of alpha particle from infinity at a particular speed. let this radius is the true radius. if the radius calculation for the same nucleus is made by alpha particle with half of earlier speed, then the percentage error involoved in the radius calculaton is
Answer» radius of a particular nucleus is calculated by projection of alpha particle from infinity at a particular speed. let this radius is the true radius. if the radius calculation for the same nucleus is made by alpha particle with half of earlier speed, then the percentage error involoved in the radius calculaton is

Discussion

5720.	In the preparation of hydrogen chloride from sodium chloride and sulphuric acid, the sulphuric acid used should be concentrated
Answer» In the preparation of hydrogen chloride from sodium chloride and sulphuric acid, the sulphuric acid used should be concentrated

Discussion

5721.	how to know which among these have electrovalent,covalent and coordinate bond? bf3 cucl2 cuso4.5h2o fecl3.h2
Answer» how to know which among these have electrovalent,covalent and coordinate bond? bf3 cucl2 cuso4.5h2o fecl3.h2

Discussion

5722.	What is an homologous series? Explain with an example.
Answer» What is an homologous series? Explain with an example.

Discussion

5723.	Weak reductant in alkali metal is -(1) Li(2) Na(3) K(4) Cs
Answer» Weak reductant in alkali metal is -(1) Li(2) Na(3) K(4) Cs

Discussion

5724.	47. How does the latice enthalpy affect the solubility of ionic compounds
Answer» 47. How does the latice enthalpy affect the solubility of ionic compounds

Discussion

5725.	ntDuring an adiabatic process, the pressure of a gas is found to be proportional to the cube of its temperature. The ratio of Cp/Cv for the gas isn ntn
Answer» ntDuring an adiabatic process, the pressure of a gas is found to be proportional to the cube of its temperature. The ratio of Cp/Cv for the gas isn ntn

Discussion

5726.	Contraction in volume on combustion of 1 mL of C3H8 will be _____ml. How to solve?
Answer» Contraction in volume on combustion of 1 mL of C3H8 will be _____ml. How to solve?

Discussion

5727.	Phosphoric acid is a type of
Answer» Phosphoric acid is a type of

Discussion

5728.	If 2 eV energy is needed to move an electron slowly from A to B, VA – VB isOptions:– 2 V 2 VZero
Answer» If 2 eV energy is needed to move an electron slowly from A to B, VA – VB is Options: – 2 V 2 V Zero

Discussion

5729.	A:addition of silver ions to a mixture of aqueous sodium chloride and sodium bromide solution will first precipitate AgBr rather than AgCl. R:Ksp of AgCl< Ksp of AgBr
Answer» A:addition of silver ions to a mixture of aqueous sodium chloride and sodium bromide solution will first precipitate AgBr rather than AgCl. R:Ksp of AgCl< Ksp of AgBr

Discussion

5730.	A gas fills the vessel completely, in which it is kept. Why? [2MARKS].
Answer» A gas fills the vessel completely, in which it is kept. Why? [2MARKS].

Discussion

5731.	given :Ag^+ +e- -- Ag; Enotred=0.799Vdissociation constant for [Ag(NH3)2]^+ into Ag^ + and NH3 is 6*10^-14. then for the following half cell reaction [Ag(NH3)2]^+ + e- --Ag +2NH3 calculate Enot at 298K
Answer» given :Ag^+ +e- -- Ag; Enotred=0.799V dissociation constant for [Ag(NH3)2]^+ into Ag^ + and NH3 is 6*10^-14. then for the following half cell reaction [Ag(NH3)2]^+ + e- --Ag +2NH3 calculate Enot at 298K

Discussion

5732.	Question 2:Why does the level of juice gets little increases, when we add some ice cubes to a glass of juice?
Answer» Question 2: Why does the level of juice gets little increases, when we add some ice cubes to a glass of juice?

5732.

Question 2:Why does the level of juice gets little increases, when we add some ice cubes to a glass of juice?

Answer»

Question 2:

Why does the level of juice gets little increases, when we add some ice cubes to a glass of juice?

Discussion

5733.	56 For real gas (molecularmass=60) if density at critical point=0.8grampercentimetrecubeanditscriticaltemperatureequalto4\ast10^5/821K,thenvanderwallconstantais?
Answer» 56 For real gas (molecularmass=60) if density at critical point=0.8grampercentimetrecubeanditscriticaltemperatureequalto4\ast10^5/821K,thenvanderwallconstantais?

Discussion

5734.	How is ethyne (acetylene) prepared in the laboratory?
Answer» How is ethyne (acetylene) prepared in the laboratory?

Discussion

5735.	According to Charles' law, volume of a gas increases or decreases by _______ of its original volume at 00C for each degree centigrade rise or fall in temperature.
Answer» According to Charles' law, volume of a gas increases or decreases by _______ of its original volume at 0⁰C for each degree centigrade rise or fall in temperature.

Discussion

5736.	In an experiment, 16 g of oxygen gas is produced. The total number of molecules present in it is __________.
Answer» In an experiment, 16 g of oxygen gas is produced. The total number of molecules present in it is __________.

Discussion

5737.	Carbon forms two oxides namely carbon mono oxide and carbon di oxide.the equivalent mass of element which remains cons†an t
Answer» Carbon forms two oxides namely carbon mono oxide and carbon di oxide.the equivalent mass of element which remains cons†an t

Discussion

5738.	Question 7 (e) Which of the following materials fall in the category of a “pure substance”? e. Calcium oxide
Answer» Question 7 (e) Which of the following materials fall in the category of a “pure substance”? e. Calcium oxide

Discussion

5739.	d/dy(a^2+y^2)=2yBut how?
Answer» d/dy(a^2+y^2)=2y But how?

Discussion

5740.	92.For the reaction A form B the rate of reaction becomes twenty seven times when the concentration of A is increased three times. What is the order of reaction?
Answer» 92.For the reaction A form B the rate of reaction becomes twenty seven times when the concentration of A is increased three times. What is the order of reaction?

Discussion

5741.	If the rate of diffusion of A is 5 times that of B, what will be the density ratio of A and B?
Answer» If the rate of diffusion of A is 5 times that of B, what will be the density ratio of A and B?

Discussion

5742.	How will you justify that ice water and steam are not different methods for different state of matter explain
Answer» How will you justify that ice water and steam are not different methods for different state of matter explain

Discussion

5743.	Pressure exerted by a perfect gas is equal to two-third of mean kinetic energy per unit volume. Give reason and explain.
Answer» Pressure exerted by a perfect gas is equal to two-third of mean kinetic energy per unit volume. Give reason and explain.

Discussion

5744.	How many Dobereiner's triads were there?3 or 5?
Answer» How many Dobereiner's triads were there? 3 or 5?

Discussion

5745.	What is halogen bridging?
Answer» What is halogen bridging?

Discussion

5746.	Which of the following statements is/are correct with respect to Thomson's model of an atom?Statement I: The mass of the atom is assumed to be uniformly distributed over the atom.Statement II: The positive charge is assumed to be uniformly distributed over the atom.Statement III: The electrons are uniformly distributed in the positively charged sphere.Stamtent IV: The electrons attract each other to stabilise the atom.(a) I, II and III(b) I and II(c) I and IV(d) I, III and IV
Answer» Which of the following statements is/are correct with respect to Thomson's model of an atom? Statement I: The mass of the atom is assumed to be uniformly distributed over the atom. Statement II: The positive charge is assumed to be uniformly distributed over the atom. Statement III: The electrons are uniformly distributed in the positively charged sphere. Stamtent IV: The electrons attract each other to stabilise the atom. (a) I, II and III (b) I and II (c) I and IV (d) I, III and IV

Discussion

5747.	The kinetic energy of particles increases with an increase in
Answer» The kinetic energy of particles increases with an increase in

Discussion

5748.	Which octahedral coordination compound will show maximum conductivity in aqueous solution if all NH3 act as ligands??CoCl3.6NH3CoCl3.5NH3CoCl3.4NH3All will have same conductivity as every compound has got 3Cl
Answer» Which octahedral coordination compound will show maximum conductivity in aqueous solution if all NH3 act as ligands?? CoCl3.6NH3 CoCl3.5NH3 CoCl3.4NH3 All will have same conductivity as every compound has got 3Cl

Discussion

5749.	An element which never has a positive oxidation number in any of its compounds
Answer» An element which never has a positive oxidation number in any of its compounds

Discussion

5750.	According to Boyle's Law: Pressure is inversely proportional to Volume and, According to the Charles law: Volume is directly proportional to the Temperature So in Gay Lussac's law how pressure is directly proportional to temperature?
Answer» According to Boyle's Law: Pressure is inversely proportional to Volume and, According to the Charles law: Volume is directly proportional to the Temperature So in Gay Lussac's law how pressure is directly proportional to temperature?

Discussion

Explore topic-wise InterviewSolutions in .

A gas occupies 3 litres at 0∘C . What volume will it occupy at - 20∘C pressure remaining constant?

What was the basis for the proposal of dalton's atomic theory.

Where does the balloon man stand? What happens to the balloons when there is a wind? What does the child like to see the balloon man do?

Question 4Arrange the following substances in increasing order of forces of attraction between the particles— water, sugar, oxygen.

Which of the statements are incorrect about potassium permanganate?

71.What is meant when we say 'molten NaCl'?

What is meant by half life of an element??

Which forces hold together neutrons and protons in the nucleus?

Which postulate of Dalton’s atomic theory is the result of the law of conservation of mass?

What is the group number of zn

li is strongest reducing agent then li+ is strongest/weakest-reducing/oxidiging agent

500 ml of 0.3 M AgNO3 are added to 600 ml of 0.5 M KI solution. The ions which will move towards the cathode and anode respectively are(1)AgI/Ag+ and NO3–(2)AgI/I– and K+(3)K+ and AgI/I–(4)AgI/K+ and I–

How we will separate a mixture of salt and sugar?

16. Polarising power: C -4 N-3 O-2 F-1 F-1 cl-1 br-1 I-1 Covalent character: Ch4 Nh3 H2o HF Polarising power: Li+ Na+ k+ Rb+ Cu+ Na+ Zn+2 Mg+2

Does the change in source bring changes in properties of the substance?

A)A boat having a length of 3Mtrs and breadth 2Mts is floating on a lake. The boat sinks by 1cm when a man gets on it. The mass of the man is ?

Which of the following is most acidic? (a)picric acid (b)formic acid (c)benzoic acid (d)acetic acid

The component of a vector is(A)always less than its magnitude(B)always greater than its magnitude(C)always equal to its magnitude(D)none of these.

In the preparation of hydrogen chloride from sodium chloride and sulphuric acid, the sulphuric acid used should be concentrated

how to know which among these have electrovalent,covalent and coordinate bond? bf3 cucl2 cuso4.5h2o fecl3.h2

What is an homologous series? Explain with an example.​

Weak reductant in alkali metal is -(1) Li(2) Na(3) K(4) Cs

47. How does the latice enthalpy affect the solubility of ionic compounds

ntDuring an adiabatic process, the pressure of a gas is found to be proportional to the cube of its temperature. The ratio of Cp/Cv for the gas isn ntn

Contraction in volume on combustion of 1 mL of C3H8 will be _____ml. How to solve?

Phosphoric acid is a type of

If 2 eV energy is needed to move an electron slowly from A to B, VA – VB isOptions:– 2 V 2 VZero

A:addition of silver ions to a mixture of aqueous sodium chloride and sodium bromide solution will first precipitate AgBr rather than AgCl. R:Ksp of AgCl< Ksp of AgBr

A gas fills the vessel completely, in which it is kept. Why? [2MARKS].

given :Ag^+ +e- -- Ag; Enotred=0.799Vdissociation constant for [Ag(NH3)2]^+ into Ag^ + and NH3 is 6*10^-14. then for the following half cell reaction [Ag(NH3)2]^+ + e- --Ag +2NH3 calculate Enot at 298K

Question 2:Why does the level of juice gets little increases, when we add some ice cubes to a glass of juice?

56 For real gas (molecularmass=60) if density at critical point=0.8grampercentimetrecubeanditscriticaltemperatureequalto4\ast10^5/821K,thenvanderwallconstantais?

How is ethyne (acetylene) prepared in the laboratory?

According to Charles' law, volume of a gas increases or decreases by _______ of its original volume at 00C for each degree centigrade rise or fall in temperature.

In an experiment, 16 g of oxygen gas is produced. The total number of molecules present in it is __________.

Carbon forms two oxides namely carbon mono oxide and carbon di oxide.the equivalent mass of element which remains cons†an t

Question 7 (e) Which of the following materials fall in the category of a “pure substance”? e. Calcium oxide

d/dy(a^2+y^2)=2yBut how?

92.For the reaction A form B the rate of reaction becomes twenty seven times when the concentration of A is increased three times. What is the order of reaction?

If the rate of diffusion of A is 5 times that of B, what will be the density ratio of A and B?

How will you justify that ice water and steam are not different methods for different state of matter explain

Pressure exerted by a perfect gas is equal to two-third of mean kinetic energy per unit volume. Give reason and explain.

How many Dobereiner's triads were there?3 or 5?

What is halogen bridging?

The kinetic energy of particles increases with an increase in

Which octahedral coordination compound will show maximum conductivity in aqueous solution if all NH3 act as ligands??CoCl3.6NH3CoCl3.5NH3CoCl3.4NH3All will have same conductivity as every compound has got 3Cl

An element which never has a positive oxidation number in any of its compounds

According to Boyle's Law: Pressure is inversely proportional to Volume and, According to the Charles law: Volume is directly proportional to the Temperature So in Gay Lussac's law how pressure is directly proportional to temperature?

What is an homologous series? Explain with an example.