10223 + Interview Questions in Chemistry Page 105 InterviewSolution

5201.	If 1000 cal. of heat is added to 4 mole of a monoatomic gas without changing its volume, then change in temperature of gas is ?a) 233 K b) 833 kc) 123 Kd) 433 k
Answer» If 1000 cal. of heat is added to 4 mole of a monoatomic gas without changing its volume, then change in temperature of gas is ? a) 233 K b) 833 k c) 123 K d) 433 k

Discussion

5202.	dipole moment in 'A-B' is 2.0 ×10^{-29} cm.if interatomic dis†an ce between A and B is 1.6 \overset°{\underset{}A} ,then calculate percentage of ionic character in A-B bond
Answer» dipole moment in 'A-B' is 2.0 ×10^{-29} cm.if interatomic dis†an ce between A and B is 1.6 \overset°{\underset{}A} ,then calculate percentage of ionic character in A-B bond

Discussion

5203.	Which of the following is not a part of J. J. Thomson’s atomic model?
Answer» Which of the following is not a part of J. J. Thomson’s atomic model?

Discussion

5204.	Two chemical substances X and Y combine together to form a product P which contains both X and Y X+Y→P X and Y cannot be broken down into simpler substances by simple chemical reactions. Which of the following statements concerning X, Y and P are correct ? (i) P is a compound (ii) X and Y are compounds (iii) X and Y are elements (iv) P has a fixed composition (a) (i), (ii) and (iii) (b) (i) , (ii) and (iv) (c) (ii), (iii) and (iv) (d) (i), (iii) and (iv)
Answer» Two chemical substances X and Y combine together to form a product P which contains both X and Y $X + Y \to P$ X and Y cannot be broken down into simpler substances by simple chemical reactions. Which of the following statements concerning X, Y and P are correct ? (i) P is a compound (ii) X and Y are compounds (iii) X and Y are elements (iv) P has a fixed composition (a) (i), (ii) and (iii) (b) (i) , (ii) and (iv) (c) (ii), (iii) and (iv) (d) (i), (iii) and (iv)

5204.

Two chemical substances X and Y combine together to form a product P which contains both X and Y X+Y→P X and Y cannot be broken down into simpler substances by simple chemical reactions. Which of the following statements concerning X, Y and P are correct ? (i) P is a compound (ii) X and Y are compounds (iii) X and Y are elements (iv) P has a fixed composition (a) (i), (ii) and (iii) (b) (i) , (ii) and (iv) (c) (ii), (iii) and (iv) (d) (i), (iii) and (iv)

Answer»

Two chemical substances X and Y combine together to form a product P which contains both X and Y

$X + Y \to P$

X and Y cannot be broken down into simpler substances by simple chemical reactions. Which of the following statements concerning X, Y and P are correct ?

(i) P is a compound (ii) X and Y are compounds

(iii) X and Y are elements (iv) P has a fixed composition

(a) (i), (ii) and (iii) (b) (i) , (ii) and (iv)

(c) (ii), (iii) and (iv) (d) (i), (iii) and (iv)

Discussion

5205.	32. How to calculate formula mass of CuSO4.5H2O?
Answer» 32. How to calculate formula mass of CuSO4.5H2O?

Discussion

5206.	You have been given a suspension and a solution. How could you tell the difference between them by their appearance?
Answer» You have been given a suspension and a solution. How could you tell the difference between them by their appearance?

Discussion

5207.	How is value of avogadro number determined as 6.022*1022?
Answer» How is value of avogadro number determined as 6.022*10^22_?

Discussion

5208.	How to change celcius into farehnite
Answer» How to change celcius into farehnite

Discussion

5209.	Give an experiment to demonstrate diffusion
Answer» Give an experiment to demonstrate diffusion

Discussion

5210.	Which complex compound obeys 18-electron rule?
Answer» Which complex compound obeys 18-electron rule?

Discussion

5211.	The freezing point depression constant (Kf) of benzene is 5.12 K kg mol–1. The freezing point depression for the solution of molality 0.01 m containing a non-electrolyte solute in benzene is(rounded off upto two decimal places)
Answer» The freezing point depression constant $(K_{f})$ of benzene is ${5.12 K kg mol}^{- 1}$ . The freezing point depression for the solution of molality $0.01 m$ containing a non-electrolyte solute in benzene is (rounded off upto two decimal places)

Discussion

5212.	The correct order of ionic radii of following species is Se2-, I-, Br-,F-, O2- .And how?
Answer» The correct order of ionic radii of following species is Se2-, I-, Br-,F-, O2- .And how?

Discussion

5213.	are the four types of van der waals forces as follows 1. london dispersion forces 2.dipole dipole forces 3.dipole induced dipole 4.hydrogen bonding ?
Answer» are the four types of van der waals forces as follows 1. london dispersion forces 2.dipole dipole forces 3.dipole induced dipole 4.hydrogen bonding ?

Discussion

5214.	Which of the following liberates O2 upon hydrolysis?
Answer» Which of the following liberates $O_{2}$ upon hydrolysis?

Discussion

5215.	(i) What do you mean by combustion?(ii) What name is given to the substances which can burn easily?
Answer» (i) What do you mean by combustion? (ii) What name is given to the substances which can burn easily?

5215.

(i) What do you mean by combustion?(ii) What name is given to the substances which can burn easily?

Answer»

(i) What do you mean by combustion?

(ii) What name is given to the substances which can burn easily?

Discussion

5216.	Arrange the metals in the decreasing order of their reactivity with acids.Mg, Al, Fe, Cu, Au.
Answer» Arrange the metals in the decreasing order of their reactivity with acids. Mg, Al, Fe, Cu, Au.

Discussion

5217.	equal masses of ice and water with temperature equally below and above the melting point of ice respectively are mixed with each other.at equilibrium 40% of ice melted,the initial temperature of water was
Answer» equal masses of ice and water with temperature equally below and above the melting point of ice respectively are mixed with each other.at equilibrium 40% of ice melted,the initial temperature of water was

Discussion

5218.	Question 35Balance the following chemical equations and identify the type of chemical reaction.(a) Mg(s)+Cl2(g)→MgCl2(s)(b) HgO(s)Heat−−→Hg(l)+O2(g)(c) Na(s)+S(s)Fuse−−→Na2S(s)(d) TiCl4(l)+Mg(s)→Ti(s)+MgCl2(s)(e) CaO(s)+SiO2(s)→CaSiO3(s)(f) H2O2(l)UV−−→H2O(l)+O2(g)
Answer» Question 35 Balance the following chemical equations and identify the type of chemical reaction. (a) Mg(s)+Cl2(g)→MgCl2(s) (b) HgO(s)Heat−−→Hg(l)+O2(g) (c) Na(s)+S(s)Fuse−−→Na2S(s) (d) TiCl4(l)+Mg(s)→Ti(s)+MgCl2(s) (e) CaO(s)+SiO2(s)→CaSiO3(s) (f) H2O2(l)UV−−→H2O(l)+O2(g)

Discussion

5219.	Rainwater is normally the purest form of natural water, but it has some impurities. What are these impurities and how do they come into rainwater?
Answer» Rainwater is normally the purest form of natural water, but it has some impurities. What are these impurities and how do they come into rainwater?

Discussion

5220.	name the separation technigue for camphor from salt factors that affect evaparation steam produces severe burn than hot water even though the constituents of water are h and o_2 water dosen'tshow the properties of any one constituents
Answer» name the separation technigue for camphor from salt factors that affect evaparation steam produces severe burn than hot water even though the constituents of water are h and o_2 water dosen'tshow the properties of any one constituents

Discussion

5221.	strength of an acid mainly depends on its tendency to donate proton or accept electron?
Answer» strength of an acid mainly depends on its tendency to donate proton or accept electron?

Discussion

5222.	An oxide which gives H2O2 on treatment with dilute acid is:
Answer» An oxide which gives $H_{2} O_{2}$ on treatment with dilute acid is:

Discussion

5223.	what is molecule?
Answer» what is molecule?

Discussion

5224.	By considering their position in the Periodic Table, which one of the following elements would you expect to have maximum metallic characteristic?
Answer» By considering their position in the Periodic Table, which one of the following elements would you expect to have maximum metallic characteristic?

Discussion

5225.	The temperature of 570 K on the Celsius scale is_____.
Answer» The temperature of $570 K$ on the Celsius scale is_____.

Discussion

5226.	Which of the following point was concluded for an atom after Rutherford's gold foil experiment?
Answer» Which of the following point was concluded for an atom after Rutherford's gold foil experiment?

Discussion

5227.	The dissociation energy of CH4 (g) is 360 kcal mol-1 and that of C2H (g) s 620 kcal mol-1. The C- C bond energy
Answer» The dissociation energy of CH4 (g) is 360 kcal mol-1 and that of C2H (g) s 620 kcal mol-1. The C- C bond energy

Discussion

5228.	ntWhat is the bond order of SO32- between S-O and the bond order of NO3 between N-O?n
Answer» ntWhat is the bond order of SO32- between S-O and the bond order of NO3 between N-O?n

Discussion

5229.	Identify the correlative conjunction in the sentence. You can either keep the logs in the shed or pile them up here itself.
Answer» Identify the correlative conjunction in the sentence. You can either keep the logs in the shed or pile them up here itself.

5229.

Identify the correlative conjunction in the sentence. You can either keep the logs in the shed or pile them up here itself.

Answer»

Identify the correlative conjunction in the sentence.

You can either keep the logs in the shed or pile them up here itself.

Discussion

5230.	The number of atoms in 0.1 mole of tetraatomic gas is
Answer» The number of atoms in 0.1 mole of tetraatomic gas is

Discussion

5231.	What is the difference between boyle temperature and critical temperature
Answer» What is the difference between boyle temperature and critical temperature

Discussion

5232.	The correct sequence of decrease in the bond angles of the following hydrides is
Answer» The correct sequence of decrease in the bond angles of the following hydrides is

Discussion

5233.	Which of the following represents Volume - Pressure graph for Ideal gas?
Answer» Which of the following represents Volume - Pressure graph for Ideal gas?

Discussion

5234.	SN1 and SN2 respectively takes place in which solvent Polar or nonpolarAprotic or protic
Answer» SN1 and SN2 respectively takes place in which solvent Polar or nonpolar Aprotic or protic

Discussion

5235.	Question 2Why is the amount of gas collected in one of the test tubes in Activity 1.7 double of the amount collected in the other? Name this gas.
Answer» Question 2 Why is the amount of gas collected in one of the test tubes in Activity 1.7 double of the amount collected in the other? Name this gas.

Discussion

5236.	State one application of centrifugation.
Answer» State one application of centrifugation.

Discussion

5237.	How to write chemical formula of compounds which have more than two components
Answer» How to write chemical formula of compounds which have more than two components

Discussion

5238.	The molecular formulae of all the possible compounds formed from given ions are:(Na+,Mg2+,Cl−,SO2−4)
Answer» The molecular formulae of all the possible compounds formed from given ions are: $(N a^{+}, M g^{2 +}, C l^{-}, S O_{4}^{2 -})$

Discussion

5239.	84.An aqueous solution freezes at -2.55^° c. What is its boiling point[Kb(H2O)=0.52,Kf(H2O)=1.86]
Answer» 84.An aqueous solution freezes at -2.55^° c. What is its boiling point[Kb(H2O)=0.52,Kf(H2O)=1.86]

Discussion

5240.	Can lambda=h upon m×v be written as lamda=h upon m×c?
Answer» Can lambda=h upon m×v be written as lamda=h upon m×c?

Discussion

5241.	Average atomic mass of magnesium is 24.31. AMU this magnesium is composed of 79% mole of 24 mg and remaining 21 mole percent of 25 mg and 26 MG .calculate mole percent of 26 mg
Answer» Average atomic mass of magnesium is 24.31. AMU this magnesium is composed of 79% mole of 24 mg and remaining 21 mole percent of 25 mg and 26 MG .calculate mole percent of 26 mg

Discussion

5242.	Question 3 What happens when dilute hydrochloric acid is added to iron filings?
Answer» Question 3 What happens when dilute hydrochloric acid is added to iron filings?

Discussion

5243.	All the gases form cathode rays and anode rays when electricity is passed through them.(a) What does the formation of cathode rays tell us about the atoms?(b) What does the formation of anode rays tell us about the atoms?
Answer» All the gases form cathode rays and anode rays when electricity is passed through them. (a) What does the formation of cathode rays tell us about the atoms? (b) What does the formation of anode rays tell us about the atoms?

Discussion

5244.	20.An electron moving in a circular orbit of radius R with a period T is equal to a magnetic dipole of dipole moment:
Answer» 20.An electron moving in a circular orbit of radius R with a period T is equal to a magnetic dipole of dipole moment:

Discussion

5245.	What is atomicity? How are molecules classified based on atomicity?
Answer» What is atomicity? How are molecules classified based on atomicity?

Discussion

5246.	Answer the following:1. Why does ice float on water?2. Why do solids have a definite shape?3. How are gases liquefied?
Answer» Answer the following: 1. Why does ice float on water? 2. Why do solids have a definite shape? 3. How are gases liquefied?

5246.

Answer the following:1. Why does ice float on water?2. Why do solids have a definite shape?3. How are gases liquefied?

Answer»

Answer the following:

1. Why does ice float on water?

2. Why do solids have a definite shape?

3. How are gases liquefied?

Discussion

5247.	How to convert celcius into kelvin and kelvin into celcius
Answer» How to convert celcius into kelvin and kelvin into celcius

Discussion

5248.	Arrange in ascending order of melting point with reasons NaF,KCl,NaCl,NaBr
Answer» Arrange in ascending order of melting point with reasons NaF,KCl,NaCl,NaBr

Discussion

5249.	Approximate atomic weight of element is 26.89 . It's equivalent weight is 8.9 . What will be the exact atomic weight
Answer» Approximate atomic weight of element is 26.89 . It's equivalent weight is 8.9 . What will be the exact atomic weight

Discussion

5250.	ZnS type of crystal structure is observed with the ionic solid is
Answer» ZnS type of crystal structure is observed with the ionic solid is

Discussion

Explore topic-wise InterviewSolutions in .

If 1000 cal. of heat is added to 4 mole of a monoatomic gas without changing its volume, then change in temperature of gas is ?a) 233 K b) 833 kc) 123 Kd) 433 k

dipole moment in 'A-B' is 2.0 ×10^{-29} cm.if interatomic dis†an ce between A and B is 1.6 \overset°{\underset{}A} ,then calculate percentage of ionic character in A-B bond

Which of the following is not a part of J. J. Thomson’s atomic model?

32. How to calculate formula mass of CuSO4.5H2O?

You have been given a suspension and a solution. How could you tell the difference between them by their appearance?

How is value of avogadro number determined as 6.022*1022?

How to change celcius into farehnite

Give an experiment to demonstrate diffusion

Which complex compound obeys 18-electron rule?

The freezing point depression constant (Kf) of benzene is 5.12 K kg mol–1. The freezing point depression for the solution of molality 0.01 m containing a non-electrolyte solute in benzene is(rounded off upto two decimal places)

The correct order of ionic radii of following species is Se2-, I-, Br-,F-, O2- .And how?

are the four types of van der waals forces as follows 1. london dispersion forces 2.dipole dipole forces 3.dipole induced dipole 4.hydrogen bonding ?

Which of the following liberates O2 upon hydrolysis?

(i) What do you mean by combustion?(ii) What name is given to the substances which can burn easily?

Arrange the metals in the decreasing order of their reactivity with acids.Mg, Al, Fe, Cu, Au.

equal masses of ice and water with temperature equally below and above the melting point of ice respectively are mixed with each other.at equilibrium 40% of ice melted,the initial temperature of water was

Question 35Balance the following chemical equations and identify the type of chemical reaction.(a) Mg(s)+Cl2(g)→MgCl2(s)(b) HgO(s)Heat−−→Hg(l)+O2(g)(c) Na(s)+S(s)Fuse−−→Na2S(s)(d) TiCl4(l)+Mg(s)→Ti(s)+MgCl2(s)(e) CaO(s)+SiO2(s)→CaSiO3(s)(f) H2O2(l)UV−−→H2O(l)+O2(g)

Rainwater is normally the purest form of natural water, but it has some impurities. What are these impurities and how do they come into rainwater?

name the separation technigue for camphor from salt factors that affect evaparation steam produces severe burn than hot water even though the constituents of water are h and o_2 water dosen'tshow the properties of any one constituents

strength of an acid mainly depends on its tendency to donate proton or accept electron?

An oxide which gives H2O2 on treatment with dilute acid is:

what is molecule?

By considering their position in the Periodic Table, which one of the following elements would you expect to have maximum metallic characteristic?

The temperature of 570 K on the Celsius scale is_____.

Which of the following point was concluded for an atom after Rutherford's gold foil experiment?

The dissociation energy of CH4 (g) is 360 kcal mol-1 and that of C2H (g) s 620 kcal mol-1. The C- C bond energy

ntWhat is the bond order of SO32- between S-O and the bond order of NO3 between N-O?n

Identify the correlative conjunction in the sentence. You can either keep the logs in the shed or pile them up here itself.

The number of atoms in 0.1 mole of tetraatomic gas is

What is the difference between boyle temperature and critical temperature

The correct sequence of decrease in the bond angles of the following hydrides is

Which of the following represents Volume - Pressure graph for Ideal gas?

SN1 and SN2 respectively takes place in which solvent Polar or nonpolarAprotic or protic

Question 2Why is the amount of gas collected in one of the test tubes in Activity 1.7 double of the amount collected in the other? Name this gas.

State one application of centrifugation.

How to write chemical formula of compounds which have more than two components

The molecular formulae of all the possible compounds formed from given ions are:(Na+,Mg2+,Cl−,SO2−4)

84.An aqueous solution freezes at -2.55^° c. What is its boiling point[Kb(H2O)=0.52,Kf(H2O)=1.86]

Can lambda=h upon m×v be written as lamda=h upon m×c?

Average atomic mass of magnesium is 24.31. AMU this magnesium is composed of 79% mole of 24 mg and remaining 21 mole percent of 25 mg and 26 MG .calculate mole percent of 26 mg

Question 3 What happens when dilute hydrochloric acid is added to iron filings?

All the gases form cathode rays and anode rays when electricity is passed through them.(a) What does the formation of cathode rays tell us about the atoms?(b) What does the formation of anode rays tell us about the atoms?

20.An electron moving in a circular orbit of radius R with a period T is equal to a magnetic dipole of dipole moment:

What is atomicity? How are molecules classified based on atomicity?

Answer the following:1. Why does ice float on water?2. Why do solids have a definite shape?3. How are gases liquefied?

How to convert celcius into kelvin and kelvin into celcius

Arrange in ascending order of melting point with reasons NaF,KCl,NaCl,NaBr

Approximate atomic weight of element is 26.89 . It's equivalent weight is 8.9 . What will be the exact atomic weight

ZnS type of crystal structure is observed with the ionic solid is