10223 + Interview Questions in Chemistry Page 104 InterviewSolution

5151.	Which of the following represents the liquid form of bromine element?
Answer» Which of the following represents the liquid form of bromine element?

Discussion

5152.	Which shows greater negative inductive effect (-I) -OR or -OH and why?
Answer» Which shows greater negative inductive effect (-I) -OR or -OH and why?

Discussion

5153.	Which of the following has the highest Calorific value?
Answer» Which of the following has the highest Calorific value?

Discussion

5154.	What do you understand by formula unit mass and molecular mass? What is the difference between the two? [3 MARKS]
Answer» What do you understand by formula unit mass and molecular mass? What is the difference between the two? [3 MARKS]

Discussion

5155.	give reasons for the following a)liquid generally flows easily b) a doctor advice to put strips of wet cloth on the forehead of a person having high fever
Answer» give reasons for the following a)liquid generally flows easily b) a doctor advice to put strips of wet cloth on the forehead of a person having high fever

5155.

give reasons for the following a)liquid generally flows easily b) a doctor advice to put strips of wet cloth on the forehead of a person having high fever

Answer»

give reasons for the following

a)liquid generally flows easily

b) a doctor advice to put strips of wet cloth on the forehead of a person having high fever

Discussion

5156.	From the metals copper, iron, magnesium, sodium and zinc, select a different metal in each case which:(i) does not react with dilute hydrochloric acid.(ii) can form 2+ and 3+ ions.(iii) has a hydroxide that reacts with both acids and alkalis.(iv) does not react with cold water but reacts with steam when heated.Arrange the metals in increasing order of reactivity.
Answer» From the metals copper, iron, magnesium, sodium and zinc, select a different metal in each case which: (i) does not react with dilute hydrochloric acid. (ii) can form 2+ and 3+ ions. (iii) has a hydroxide that reacts with both acids and alkalis. (iv) does not react with cold water but reacts with steam when heated. Arrange the metals in increasing order of reactivity.

Discussion

5157.	For a hypothetical H-like atom, the Potential Energy of the system is given by U(r)= -Ke²/r³, where r is the distance between particles. If Bohr's Model of quantization of angular momentum is applicable, then velocity of the particle is given by:
Answer» For a hypothetical H-like atom, the Potential Energy of the system is given by U(r)= -Ke²/r³, where r is the distance between particles. If Bohr's Model of quantization of angular momentum is applicable, then velocity of the particle is given by:

Discussion

5158.	At all what places are tetrahedral voids and octahedral voids located in a solid?
Answer» At all what places are tetrahedral voids and octahedral voids located in a solid?

Discussion

5159.	What is the difference between phosphorescent and fluorescent coating
Answer» What is the difference between phosphorescent and fluorescent coating

Discussion

5160.	Consider the following sols(l) Gold sol(ll) Protein sol(lll) Starch sol(lV) Sulphur sol(V) Cellulose(Vl) Polystyrene
Answer» Consider the following $s o l s$ $(l) Gold sol$ $(l l) Protein sol$ $(l l l) Starch sol$ $(l V) Sulphur sol$ $(V) Cellulose$ $(V l) Polystyrene$

Discussion

5161.	10 mole of O3 gas is kept in a container out of 5 mole dissociates into monoatomic O. Find degree of freedom of mixture
Answer» 10 mole of O3 gas is kept in a container out of 5 mole dissociates into monoatomic O. Find degree of freedom of mixture

Discussion

5162.	How does applying pressure (or coompression)help in the liquefaction of a gas ?
Answer» How does applying pressure (or coompression)help in the liquefaction of a gas ?

Discussion

5163.	Smog is essentially caused by the presence of:
Answer» Smog is essentially caused by the presence of:

Discussion

5164.	What is electrode potential
Answer» What is electrode potential

Discussion

5165.	two types of defination for matter
Answer» two types of defination for matter

Discussion

5166.	Fill in the blanks.(a) The layer of ozone gas absorbs ………… rays that come from the sun to the earth.(b) Of the total water available on the earth, fresh water forms ...... percent.(c) Both ...…. and ……... constituents are present in the soil.
Answer» Fill in the blanks. (a) The layer of ozone gas absorbs ………… rays that come from the sun to the earth. (b) Of the total water available on the earth, fresh water forms ...... percent. (c) Both ...…. and ……... constituents are present in the soil.

Discussion

5167.	At 30°C, the solubility of Ag2CO3 would be maximum in 1 litre of
Answer» At 30°C, the solubility of Ag2CO3 would be maximum in 1 litre of

Discussion

5168.	what is the correct defination of daltons atomic theory
Answer» what is the correct defination of daltons atomic theory

Discussion

5169.	20 ml of Co is explocded with 30 ml of O2 at cons†an t temperarture and pressure. Final volume of the gases in ml will be (1) 35 (2) 40 (3) 50 (4) 6
Answer» 20 ml of Co is explocded with 30 ml of O2 at cons†an t temperarture and pressure. Final volume of the gases in ml will be (1) 35 (2) 40 (3) 50 (4) 6

Discussion

5170.	Give an example of a chemical reaction for each of the following situations:(a) A change in colour is observed.(b) A gas is evolved.(c) Sound is produced.
Answer» Give an example of a chemical reaction for each of the following situations: (a) A change in colour is observed. (b) A gas is evolved. (c) Sound is produced.

Discussion

5171.	Which solvent can be used to separate the mixture of salt and sand?
Answer» Which solvent can be used to separate the mixture of salt and sand?

Discussion

5172.	Why does CO2 have a linear structure but SiO2 doesn't ??
Answer» Why does CO2 have a linear structure but SiO2 doesn't ??

Discussion

5173.	how can be found charge on an atom
Answer» how can be found charge on an atom

Discussion

5174.	How can you obtain hydrogen from a mixture of hydrogen and carbon monoxide.
Answer» How can you obtain hydrogen from a mixture of hydrogen and carbon monoxide.

Discussion

5175.	The conductivity of a saturated solution of agcl is 9 x 10^-6 Sm^-1 and its molar conductivity at infinite dilution is 3 x 10^-4 Sm^2 mol^-1. The Ksp of agcl is
Answer» The conductivity of a saturated solution of agcl is 9 x 10^-6 Sm^-1 and its molar conductivity at infinite dilution is 3 x 10^-4 Sm^2 mol^-1. The Ksp of agcl is

Discussion

5176.	is decomposition reaction is same as dispropotionantion?
Answer» is decomposition reaction is same as dispropotionantion?

Discussion

5177.	___________ is a mixture of smoke and fog
Answer» ___________ is a mixture of smoke and fog

Discussion

5178.	Why does hydrogen show duel nature ?
Answer» Why does hydrogen show duel nature ?

Discussion

5179.	A balloon filled withmethane (CH4) is pricked with a sharp point and quickly plunged intoa tank of hydrogen at the same pressure. After sometime, the balloon will have:
Answer» A balloon filled with methane (CH₄) is pricked with a sharp point and quickly plunged into a tank of hydrogen at the same pressure. After sometime, the balloon will have:

Discussion

5180.	Which of the following materials cannot be charged by friction?
Answer» Which of the following materials cannot be charged by friction?

Discussion

5181.	What is SPM? Which type of pollution it might cause? [2 MARKS]
Answer» What is SPM? Which type of pollution it might cause? [2 MARKS]

Discussion

5182.	Which radioactive isotope is used to determine the activity of thyroid gland ?
Answer» Which radioactive isotope is used to determine the activity of thyroid gland ?

Discussion

5183.	निम्नलिखित का आशय स्पष्ट कीजिए − इस पेशे में आमतौर पर स्याह को सफ़ेद और सफ़ेद को स्याह करना होता था।
Answer» निम्नलिखित का आशय स्पष्ट कीजिए − इस पेशे में आमतौर पर स्याह को सफ़ेद और सफ़ेद को स्याह करना होता था।

5183.

निम्नलिखित का आशय स्पष्ट कीजिए − इस पेशे में आमतौर पर स्याह को सफ़ेद और सफ़ेद को स्याह करना होता था।

Answer»

निम्नलिखित का आशय स्पष्ट कीजिए −

इस पेशे में आमतौर पर स्याह को सफ़ेद और सफ़ेद को स्याह करना होता था।

Discussion

5184.	Question 1You have two solutions, A and B. The pH of solution A is 6 and pH of solution B is 8. Which solution has more hydrogen ion concentration? Which of this is acidic and which one is basic?
Answer» Question 1 You have two solutions, A and B. The pH of solution A is 6 and pH of solution B is 8. Which solution has more hydrogen ion concentration? Which of this is acidic and which one is basic?

Discussion

5185.	On the basic of information availbale from the relation 43Al+O2→23Al2O3, ΔG=−827 kJ mol−1 of O2, the minimum emf required to carry out electrolysis of Al2O3 is:
Answer» On the basic of information availbale from the relation $\frac{4}{3} A l + O_{2} \to \frac{2}{3} A l_{2} O_{3}, Δ G = - 827 {kJ mol}^{- 1}$ of $O_{2}$ , the minimum emf required to carry out electrolysis of $A l_{2} O_{3}$ is:

Discussion

5186.	The oxidation number of oxygen in superoxides is
Answer» The oxidation number of oxygen in superoxides is

Discussion

5187.	The maximum number of electrons that can be accommodated in the outermost orbit is ___ .
Answer» The maximum number of electrons that can be accommodated in the outermost orbit is ___ .

Discussion

5188.	Explain law of reciprocal proportion or law of equivalent proportion
Answer» Explain law of reciprocal proportion or law of equivalent proportion

Discussion

5189.	Formation of a solution from two components can be considered as 1)purr solvent- seperated solvent molecules,△ H1 2)pure solute- separated solute molecules, △ H2 3)seperated solvent and solute molecules-solution, △ H3 Solution so formed will be ideal if 1)△ H(sol.)=△ H1+ △ H2+ △ H3 2)△ H=△ H1+△ H2-△ H3 3)△ H=△ H1-△ H2-△ H3 4)△ H=△ H3-△ H1-△ H2
Answer» Formation of a solution from two components can be considered as 1)purr solvent- seperated solvent molecules,△ H1 2)pure solute- separated solute molecules, △ H2 3)seperated solvent and solute molecules-solution, △ H3 Solution so formed will be ideal if 1)△ H(sol.)=△ H1+ △ H2+ △ H3 2)△ H=△ H1+△ H2-△ H3 3)△ H=△ H1-△ H2-△ H3 4)△ H=△ H3-△ H1-△ H2

Discussion

5190.	The maximum number of electrons in an orbit can be calculated by ___.
Answer» The maximum number of electrons in an orbit can be calculated by ___.

Discussion

5191.	The point of intersection and sudden increase in the slope, in the diagram given below respectively, indicates:
Answer» The point of intersection and sudden increase in the slope, in the diagram given below respectively, indicates:

Discussion

5192.	Which of the following lanthanoid ions is diamagnetic?(At. nos. Ce=58,Sm=62,Eu=63,Yb=70)
Answer» Which of the following lanthanoid ions is diamagnetic? (At. nos. $C e = 58, S m = 62, E u = 63, Y b = 70$ )

Discussion

5193.	Acids donate proton amd are also a good accptor of electrons then why do they donate protons and become negative anf then how can the accept electrons?
Answer» Acids donate proton amd are also a good accptor of electrons then why do they donate protons and become negative anf then how can the accept electrons?

Discussion

5194.	WHAT IS SHIELDING EFFECT?WHAT IS THE VALUE OF SHIELDING CONSTANT AND HOW TO USE IT IN NUMERICALS
Answer» WHAT IS SHIELDING EFFECT?WHAT IS THE VALUE OF SHIELDING CONSTANT AND HOW TO USE IT IN NUMERICALS

Discussion

5195.	At 25C and 730mm pressure 380ml of dry oxygen was collected if tge temperature is constant what volume will the oxygen occupy at 760mm pressure
Answer» At 25C and 730mm pressure 380ml of dry oxygen was collected if tge temperature is constant what volume will the oxygen occupy at 760mm pressure

Discussion

5196.	What is the significance of the formula of a substance?
Answer» What is the significance of the formula of a substance?

Discussion

5197.	The product formed in the reaction of SOCl2 with white phosphorus
Answer» The product formed in the reaction of $S O C l_{2}$ with white phosphorus

Discussion

5198.	Name one coloured solid and one colourless liquid which show the same experiment of red brown vapours of bromine diffusing into air in the jar
Answer» Name one coloured solid and one colourless liquid which show the same experiment of red brown vapours of bromine diffusing into air in the jar

Discussion

5199.	when pressure remaining cons†an t , at what temperature will the r.m.s.speed of a gas molecules increase by 10% of the r.m.s.speed at NTP
Answer» when pressure remaining cons†an t , at what temperature will the r.m.s.speed of a gas molecules increase by 10% of the r.m.s.speed at NTP

Discussion

5200.	A weak acid and weak base will have more levelling effect than water towards different bases and acids respectively.Explain this statement in detail.
Answer» A weak acid and weak base will have more levelling effect than water towards different bases and acids respectively.Explain this statement in detail.

Discussion

Explore topic-wise InterviewSolutions in .

Which of the following represents the liquid form of bromine element?

Which shows greater negative inductive effect (-I) -OR or -OH and why?

Which of the following has the highest Calorific value?

What do you understand by formula unit mass and molecular mass? What is the difference between the two? [3 MARKS]

give reasons for the following a)liquid generally flows easily b) a doctor advice to put strips of wet cloth on the forehead of a person having high fever

For a hypothetical H-like atom, the Potential Energy of the system is given by U(r)= -Ke²/r³, where r is the distance between particles. If Bohr's Model of quantization of angular momentum is applicable, then velocity of the particle is given by:

At all what places are tetrahedral voids and octahedral voids located in a solid?

What is the difference between phosphorescent and fluorescent coating

Consider the following sols(l) Gold sol(ll) Protein sol(lll) Starch sol(lV) Sulphur sol(V) Cellulose(Vl) Polystyrene

10 mole of O3 gas is kept in a container out of 5 mole dissociates into monoatomic O. Find degree of freedom of mixture

How does applying pressure (or coompression)help in the liquefaction of a gas ?

Smog is essentially caused by the presence of:

What is electrode potential

two types of defination for matter

Fill in the blanks.(a) The layer of ozone gas absorbs ………… rays that come from the sun to the earth.(b) Of the total water available on the earth, fresh water forms ...... percent.(c) Both ...…. and ……... constituents are present in the soil.

At 30°C, the solubility of Ag2CO3 would be maximum in 1 litre of

what is the correct defination of daltons atomic theory

20 ml of Co is explocded with 30 ml of O2 at cons†an t temperarture and pressure. Final volume of the gases in ml will be (1) 35 (2) 40 (3) 50 (4) 6

Give an example of a chemical reaction for each of the following situations:​(a) A change in colour is observed.​(b) A gas is evolved.(c) Sound is produced.

Which solvent can be used to separate the mixture of salt and sand?

Why does CO2 have a linear structure but SiO2 doesn't ??

how can be found charge on an atom

How can you obtain hydrogen from a mixture of hydrogen and carbon monoxide.

The conductivity of a saturated solution of agcl is 9 x 10^-6 Sm^-1 and its molar conductivity at infinite dilution is 3 x 10^-4 Sm^2 mol^-1. The Ksp of agcl is

is decomposition reaction is same as dispropotionantion?

___________ is a mixture of smoke and fog

Why does hydrogen show duel nature ?

A balloon filled withmethane (CH4) is pricked with a sharp point and quickly plunged intoa tank of hydrogen at the same pressure. After sometime, the balloon will have:

Which of the following materials cannot be charged by friction?

What is SPM? Which type of pollution it might cause? [2 MARKS]

Which radioactive isotope is used to determine the activity of thyroid gland ?

निम्नलिखित का आशय स्पष्ट कीजिए − इस पेशे में आमतौर पर स्याह को सफ़ेद और सफ़ेद को स्याह करना होता था।

Question 1You have two solutions, A and B. The pH of solution A is 6 and pH of solution B is 8. Which solution has more hydrogen ion concentration? Which of this is acidic and which one is basic?

On the basic of information availbale from the relation 43Al+O2→23Al2O3, ΔG=−827 kJ mol−1 of O2, the minimum emf required to carry out electrolysis of Al2O3 is:

The oxidation number of oxygen in superoxides is

The maximum number of electrons that can be accommodated in the outermost orbit is ___ .

Explain law of reciprocal proportion or law of equivalent proportion

The maximum number of electrons in an orbit can be calculated by ___.

The point of intersection and sudden increase in the slope, in the diagram given below respectively, indicates:

Which of the following lanthanoid ions is diamagnetic?(At. nos. Ce=58,Sm=62,Eu=63,Yb=70)

Acids donate proton amd are also a good accptor of electrons then why do they donate protons and become negative anf then how can the accept electrons?

WHAT IS SHIELDING EFFECT?WHAT IS THE VALUE OF SHIELDING CONSTANT AND HOW TO USE IT IN NUMERICALS

At 25C and 730mm pressure 380ml of dry oxygen was collected if tge temperature is constant what volume will the oxygen occupy at 760mm pressure

What is the significance of the formula of a substance?

The product formed in the reaction of SOCl2 with white phosphorus

Name one coloured solid and one colourless liquid which show the same experiment of red brown vapours of bromine diffusing into air in the jar

when pressure remaining cons†an t , at what temperature will the r.m.s.speed of a gas molecules increase by 10% of the r.m.s.speed at NTP

A weak acid and weak base will have more levelling effect than water towards different bases and acids respectively.Explain this statement in detail.

Give an example of a chemical reaction for each of the following situations:(a) A change in colour is observed.(b) A gas is evolved.(c) Sound is produced.