10223 + Interview Questions in Chemistry Page 20 InterviewSolution

951.	What is a neutrino?
Answer» What is a neutrino?

Discussion

952.	Give the formulae of the compounds formed from the following sets of elements:(a) calcium and fluorine (b) hydrogen ans sulphur (c) nitrogen and hydrogen (d) carbon and chlorine(e) sodium and oxygen (f) carbon and oxygen
Answer» Give the formulae of the compounds formed from the following sets of elements: (a) calcium and fluorine (b) hydrogen ans sulphur (c) nitrogen and hydrogen (d) carbon and chlorine (e) sodium and oxygen (f) carbon and oxygen

Discussion

953.	What are the conditions required for applying these formula:-1) v1 + v2 /22) 2v1v2/v1+v2
Answer» What are the conditions required for applying these formula:- 1) v1 + v2 /2 2) 2v1v2/v1+v2

Discussion

954.	123 The molar solubility of CaF2 (Ks5.3 x10-11) in 0.1 M solution of NaF will be-Co5.3 x 10-11 mol L-1(2) 5.3 × 10-8 mol L-1A)-E) S.3 × 10-9 mol L-1くが(141) 5.3 × 10-10 mol L-1"卡
Answer» 123 The molar solubility of CaF2 (Ks5.3 x10-11) in 0.1 M solution of NaF will be-Co5.3 x 10-11 mol L-1(2) 5.3 × 10-8 mol L-1A)-E) S.3 × 10-9 mol L-1くが(141) 5.3 × 10-10 mol L-1"卡

Discussion

955.	what are order of solubility of SO4 2- cl- CO3 2- and HCO3- of grp1 and grp 2 elements
Answer» what are order of solubility of SO4 2- cl- CO3 2- and HCO3- of grp1 and grp 2 elements

Discussion

956.	How can we say that (alloys) can be called solid solutions ? As their particles are large and they scatter light .......
Answer» How can we say that (alloys) can be called solid solutions ? As their particles are large and they scatter light .......

Discussion

957.	On increasing the temperature, the solubility of a gas (solute) in solution ______.
Answer» On increasing the temperature, the solubility of a gas (solute) in solution ______.

Discussion

958.	identity the subdstance getting oxidised ,reduced .oxidising agent and reducing agent in given reactionHCHO+2[Ag(NH3)2]^++3OH^--->2Ag+HCOO^-+4NH3+2H2O
Answer» identity the subdstance getting oxidised ,reduced .oxidising agent and reducing agent in given reaction HCHO+2[Ag(NH3)2]^++3OH^--->2Ag+HCOO^-+4NH3+2H2O

Discussion

959.	36. A solution of 500 ml of 2M KOH is added to 500 ml of 2M HCl and the mixture is well shaken. The rise in temperature T1 is noted. The experiment is done repeated using 250 ml of each solution and rise in temperature T2 is again noted. Assume all heat is taken up by the solution: A) T1=T2 B) T1=2(T2) C) T2=2(T1) D) T1=4(T2)
Answer» 36. A solution of 500 ml of 2M KOH is added to 500 ml of 2M HCl and the mixture is well shaken. The rise in temperature T1 is noted. The experiment is done repeated using 250 ml of each solution and rise in temperature T2 is again noted. Assume all heat is taken up by the solution: A) T1=T2 B) T1=2(T2) C) T2=2(T1) D) T1=4(T2)

Discussion

960.	density of liquid at depth
Answer» density of liquid at depth

Discussion

961.	Honey is more viscous than water. Can you suggest why ?
Answer» Honey is more viscous than water. Can you suggest why ?

Discussion

962.	The ratio of number of molecules in equal weights of H2, He and CH4 is
Answer» The ratio of number of molecules in equal weights of $H_{2}$ , He and $C H_{4}$ is

Discussion

963.	what is meant by tones and overtones
Answer» what is meant by tones and overtones

Discussion

964.	Fill in the blanks. (a) ………… is a unit of heat. (b) When heat capacity is mentioned the exact quantity of the ………… of the substance is not known. (c) The expansion of the strips in a bimetallic strip is ………… . (d) The expansion of gases is ………… .
Answer» Fill in the blanks. (a) ………… is a unit of heat. (b) When heat capacity is mentioned the exact quantity of the ………… of the substance is not known. (c) The expansion of the strips in a bimetallic strip is ………… . (d) The expansion of gases is ………… .

964.

Fill in the blanks. (a) ………… is a unit of heat. (b) When heat capacity is mentioned the exact quantity of the ………… of the substance is not known. (c) The expansion of the strips in a bimetallic strip is ………… . (d) The expansion of gases is ………… .

Answer»

Fill in the blanks.

(a) ………… is a unit of heat.

(b) When heat capacity is mentioned the exact quantity of the ………… of the substance is not known.

(c) The expansion of the strips in a bimetallic strip is ………… .

(d) The expansion of gases is ………… .

Discussion

965.	Which of the following is correct about Mendeleev's Periodic Table over Newland's periodic table?
Answer» Which of the following is correct about Mendeleev's Periodic Table over Newland's periodic table?

Discussion

966.	What is meant by saying that the molecular mass of the oxygen is 32?
Answer» What is meant by saying that the molecular mass of the oxygen is 32?

Discussion

967.	The volume of 0.10 M H,SO, must be added to 50 mL of 0.10 M NaOH solution to make a solution inwhich the molarity of the H SO, is 0.050 M is(A) 400 mlL(B) 50 mL(C) 100 mL(D) 150 mL
Answer» The volume of 0.10 M H,SO, must be added to 50 mL of 0.10 M NaOH solution to make a solution inwhich the molarity of the H SO, is 0.050 M is(A) 400 mlL(B) 50 mL(C) 100 mL(D) 150 mL

Discussion

968.	How to calculate valency or n factors in equivalent mass
Answer» How to calculate valency or n factors in equivalent mass

Discussion

969.	Question 20The level of air pollution is higher at a busy traffic intersection. Why?
Answer» Question 20 The level of air pollution is higher at a busy traffic intersection. Why?

Discussion

970.	Give the names and symols of five familiar substances which you think are elements.
Answer» Give the names and symols of five familiar substances which you think are elements.

Discussion

971.	51.The conductivity of saturated solution of silver chloride is K ( ohm-1 cm-1). The limimting molar conductivity of Ag+ and Cl- are x and y respectively. The solubility of AgCl in gram per litre is (1) (x+y)1000/ K143.5 (2) K1000143.5/(x+y) (3) K1000/(x-y) (4) K143.5/(x+y)
Answer» 51.The conductivity of saturated solution of silver chloride is K ( ohm-1 cm-1). The limimting molar conductivity of Ag+ and Cl- are x and y respectively. The solubility of AgCl in gram per litre is (1) (x+y)1000/ K143.5 (2) K1000143.5/(x+y) (3) K1000/(x-y) (4) K143.5/(x+y)

Discussion

972.	A1 and A2 are two ores of metal M.
Answer» $A_{1}$ and $A_{2}$ are two ores of metal $M .$

Discussion

973.	Question 2Rutherford's alpha(a) particles scattering experiment resulted in the discovery of(a) Electron(b) Proton(c) Nucleus in the atom(d) Atomic mass
Answer» Question 2 Rutherford's alpha(a) particles scattering experiment resulted in the discovery of (a) Electron (b) Proton (c) Nucleus in the atom (d) Atomic mass

Discussion

974.	Why cupper is displaced during the reaction of ferrous and copper sulphate
Answer» Why cupper is displaced during the reaction of ferrous and copper sulphate

Discussion

975.	calculate the freezing point of a solution of a non volatile solute on a unknown solvent of molar mass 30g/mole having mole fraction of a solvent equal to. 8.Given that latent heat of fusion of solid solvent =2.7kcal/mol,freezing point of solvent 27 degree Celsius
Answer» calculate the freezing point of a solution of a non volatile solute on a unknown solvent of molar mass 30g/mole having mole fraction of a solvent equal to. 8.Given that latent heat of fusion of solid solvent =2.7kcal/mol,freezing point of solvent 27 degree Celsius

Discussion

976.	Which among the given acids is a monobasic acid?
Answer» Which among the given acids is a monobasic acid?

Discussion

977.	Question 2 (iv)Write down the names of compounds represented by the following formulae:(iv) KNO3
Answer» Question 2 (iv) Write down the names of compounds represented by the following formulae: $(i v) K N O_{3}$

Discussion

978.	In a chemical formula of a diatomic ionic compound, the valency of the anion is 3. Find out the valency of the cation.
Answer» In a chemical formula of a diatomic ionic compound, the valency of the anion is 3. Find out the valency of the cation.

Discussion

979.	[PtBrCl(NO2)NH3]I on ionisation gives the ion:
Answer» $[P t B r C l (N O_{2}) N H_{3}] I$ $o n i o n i s a t i o n g i v e s t h e i o n$ :

Discussion

980.	Is dissolution of copper sulphate in water a chemical change? Justify your answer.
Answer» Is dissolution of copper sulphate in water a chemical change? Justify your answer.

Discussion

981.	Why do we sweat more on a humid day than on a hot dry day?
Answer» Why do we sweat more on a humid day than on a hot dry day?

Discussion

982.	Identify the property that hydrogen (H) and alkali metals (M) have in common.
Answer» Identify the property that hydrogen (H) and alkali metals (M) have in common.

Discussion

983.	44. How carbon monoxide is stable, even the valency of carbon is not satisfied?
Answer» 44. How carbon monoxide is stable, even the valency of carbon is not satisfied?

Discussion

984.	the solubility product of CuCl is 2.29×10^{-7} at 25^° C and {{E^†extdegree}_{}}_{Cl^-\vert CuCl\vert Cu } is 0.129 V. Calculate {E^†extdegree}_{Cu^+\vert C
Answer» the solubility product of CuCl is 2.29×10^{-7} at 25^° C and {{E^†extdegree}_{}}_{Cl^-\vert CuCl\vert Cu } is 0.129 V. Calculate {E^†extdegree}_{Cu^+\vert C

Discussion

985.	The proton has a charge equal in magnitude but opposite in sign to that of:
Answer» The proton has a charge equal in magnitude but opposite in sign to that of:

Discussion

986.	Which of the following are isotopes and which are isobars ? argon, protium, calcium, deuterium Explain why the isotopes have similar chemical properties but they differ in physical properties.
Answer» Which of the following are isotopes and which are isobars ? argon, protium, calcium, deuterium Explain why the isotopes have similar chemical properties but they differ in physical properties.

Discussion

987.	(a) Differentiate between a saturated and an unsaturated solution. How will you test whether a given solution is saturated or not?(b) How would you prepare a saturated solution of sodium chloride in water at 25° C? What will happen if this solution is cooled to 10° C?
Answer» (a) Differentiate between a saturated and an unsaturated solution. How will you test whether a given solution is saturated or not? (b) How would you prepare a saturated solution of sodium chloride in water at 25° C? What will happen if this solution is cooled to 10° C?

Discussion

988.	Which one has higher boiling point between o-nitrophenol and p-nitrophenol and why?
Answer» Which one has higher boiling point between o-nitrophenol and p-nitrophenol and why?

Discussion

989.	38. In case of CH3COOH, the oxidation number of carbon of carboxylic group is (1) 3 (2) Zero (3) +1 (4) +3
Answer» 38. In case of CH3COOH, the oxidation number of carbon of carboxylic group is (1) 3 (2) Zero (3) +1 (4) +3

Discussion

990.	97.To calculate number of neutron in chlorine atom , why mass number is taken as 35 rather than 35.5.?
Answer» 97.To calculate number of neutron in chlorine atom , why mass number is taken as 35 rather than 35.5.?

Discussion

991.	Which of the following changes does not take place when a solid is converted to a liquid?
Answer» Which of the following changes does not take place when a solid is converted to a liquid?

Discussion

992.	Question 3Magnesium ribbon on burning in air produces(a) magnesium oxide, water and light(b) magnesium oxide and heat(c) magnesium oxide, heat and light(d) magnesium oxide, water and heat
Answer» Question 3 Magnesium ribbon on burning in air produces (a) magnesium oxide, water and light (b) magnesium oxide and heat (c) magnesium oxide, heat and light (d) magnesium oxide, water and heat

Discussion

993.	__ is the combining capacity of an element.
Answer» __ is the combining capacity of an element.

Discussion

994.

What happens when HCl is treated with an aqueous solution of AgNO3?

Answer»

What happens when HCl is treated with an aqueous solution of

A g N O_{3}

?

Discussion

995.	graph of inverse of total pressure (PT) vs molefraction of A in vapour phase (YA) is linear andhas slope equal to
Answer» graph of inverse of total pressure (PT) vs molefraction of A in vapour phase (YA) is linear andhas slope equal to

Discussion

996.	Would you cool a bucket of water more quickly by placing it on ice or by placing ice into it? Give reason
Answer» Would you cool a bucket of water more quickly by placing it on ice or by placing ice into it? Give reason

Discussion

997.	What are combination reactions? Give examples.
Answer» What are combination reactions? Give examples.

Discussion

998.	Explain the process of decomposition.
Answer» Explain the process of decomposition.

Discussion

999.	47.Number of degenerate orbitals of hydrogen atom in the 4th shell is
Answer» 47.Number of degenerate orbitals of hydrogen atom in the 4th shell is

Discussion

1000.	A painter wanted to white wash a house. She bought 10 kg of quick lime from the market and dissolved in 30 litres of water. On adding lime to the water, she noticed that the water started boiling even when it was not being heated. Give reason for her observation. Write the corresponding equations and name the product formed.
Answer» A painter wanted to white wash a house. She bought 10 kg of quick lime from the market and dissolved in 30 litres of water. On adding lime to the water, she noticed that the water started boiling even when it was not being heated. Give reason for her observation. Write the corresponding equations and name the product formed.

Discussion

Explore topic-wise InterviewSolutions in .

What is a neutrino?

Give the formulae of the compounds formed from the following sets of elements:(a) calcium and fluorine (b) hydrogen ans sulphur (c) nitrogen and hydrogen (d) carbon and chlorine(e) sodium and oxygen (f) carbon and oxygen

What are the conditions required for applying these formula:-1) v1 + v2 /22) 2v1v2/v1+v2

123 The molar solubility of CaF2 (Ks5.3 x10-11) in 0.1 M solution of NaF will be-Co5.3 x 10-11 mol L-1(2) 5.3 × 10-8 mol L-1A)-E) S.3 × 10-9 mol L-1くが(141) 5.3 × 10-10 mol L-1"卡

what are order of solubility of SO4 2- cl- CO3 2- and HCO3- of grp1 and grp 2 elements

How can we say that (alloys) can be called solid solutions ? As their particles are large and they scatter light .......

On increasing the temperature, the solubility of a gas (solute) in solution ______.

identity the subdstance getting oxidised ,reduced .oxidising agent and reducing agent in given reactionHCHO+2[Ag(NH3)2]^++3OH^--->2Ag+HCOO^-+4NH3+2H2O

density of liquid at depth

Honey is more viscous than water. Can you suggest why ?

The ratio of number of molecules in equal weights of H2, He and CH4 is

what is meant by tones and overtones

Fill in the blanks. (a) ………… is a unit of heat. (b) When heat capacity is mentioned the exact quantity of the ………… of the substance is not known. (c) The expansion of the strips in a bimetallic strip is ………… . (d) The expansion of gases is ………… .

Which of the following is correct about Mendeleev's Periodic Table over Newland's periodic table?

What is meant by saying that the molecular mass of the oxygen is 32?

The volume of 0.10 M H,SO, must be added to 50 mL of 0.10 M NaOH solution to make a solution inwhich the molarity of the H SO, is 0.050 M is(A) 400 mlL(B) 50 mL(C) 100 mL(D) 150 mL

How to calculate valency or n factors in equivalent mass

Question 20The level of air pollution is higher at a busy traffic intersection. Why?

Give the names and symols of five familiar substances which you think are elements.

51.The conductivity of saturated solution of silver chloride is K ( ohm-1 cm-1). The limimting molar conductivity of Ag+ and Cl- are x and y respectively. The solubility of AgCl in gram per litre is (1) (x+y)*1000/ K*143.5 (2) K*1000*143.5/(x+y) (3) K*1000/(x-y) (4) K*143.5/(x+y)

A1 and A2 are two ores of metal M.

Question 2Rutherford's alpha(a) particles scattering experiment resulted in the discovery of(a) Electron(b) Proton(c) Nucleus in the atom(d) Atomic mass

Why cupper is displaced during the reaction of ferrous and copper sulphate

calculate the freezing point of a solution of a non volatile solute on a unknown solvent of molar mass 30g/mole having mole fraction of a solvent equal to. 8.Given that latent heat of fusion of solid solvent =2.7kcal/mol,freezing point of solvent 27 degree Celsius

Which among the given acids is a monobasic acid?

Question 2 (iv)Write down the names of compounds represented by the following formulae:(iv) KNO3

In a chemical formula of a diatomic ionic compound, the valency of the anion is 3. Find out the valency of the cation.

[PtBrCl(NO2)NH3]I on ionisation gives the ion:

Is dissolution of copper sulphate in water a chemical change? Justify your answer.

Why do we sweat more on a humid day than on a hot dry day?

Identify the property that hydrogen (H) and alkali metals (M) have in common.

44. How carbon monoxide is stable, even the valency of carbon is not satisfied?

the solubility product of CuCl is 2.29×10^{-7} at 25^° C and {{E^†extdegree}_{}}_{Cl^-\vert CuCl\vert Cu } is 0.129 V. Calculate {E^†extdegree}_{Cu^+\vert C

The proton has a charge equal in magnitude but opposite in sign to that of:

Which of the following are isotopes and which are isobars ? argon, protium, calcium, deuterium Explain why the isotopes have similar chemical properties but they differ in physical properties.

(a) Differentiate between a saturated and an unsaturated solution. How will you test whether a given solution is saturated or not?(b) How would you prepare a saturated solution of sodium chloride in water at 25° C? What will happen if this solution is cooled to 10° C?

Which one has higher boiling point between o-nitrophenol and p-nitrophenol and why?

38. In case of CH3COOH, the oxidation number of carbon of carboxylic group is (1) 3 (2) Zero (3) +1 (4) +3

97.To calculate number of neutron in chlorine atom , why mass number is taken as 35 rather than 35.5.?

Which of the following changes does not take place when a solid is converted to a liquid?

Question 3Magnesium ribbon on burning in air produces(a) magnesium oxide, water and light(b) magnesium oxide and heat(c) magnesium oxide, heat and light(d) magnesium oxide, water and heat

__ is the combining capacity of an element.

What happens when HCl is treated with an aqueous solution of AgNO3?

graph of inverse of total pressure (PT) vs molefraction of A in vapour phase (YA) is linear andhas slope equal to

Would you cool a bucket of water more quickly by placing it on ice or by placing ice into it? Give reason

What are combination reactions? Give examples.

Explain the process of decomposition.

47.Number of degenerate orbitals of hydrogen atom in the 4th shell is

51.The conductivity of saturated solution of silver chloride is K ( ohm-1 cm-1). The limimting molar conductivity of Ag+ and Cl- are x and y respectively. The solubility of AgCl in gram per litre is (1) (x+y)1000/ K143.5 (2) K1000143.5/(x+y) (3) K1000/(x-y) (4) K143.5/(x+y)