15280 + Interview Questions in Chemistry Page 99 InterviewSolution

4901.	The percentage of nitrogen by mass in ammonium sulphate is closest to (atomic masses H = 1, N = 14, O = 16, S = 32)
Answer» The percentage of nitrogen by mass in ammonium sulphate is closest to (atomic masses H = 1, N = 14, O = 16, S = 32)

Discussion

4902.	What are the terms defined in (i) and (ii) below?(i) A salt containing a metal ion surrounded by other ions or molecules.(ii) A base which is soluble in water.
Answer» What are the terms defined in (i) and (ii) below? (i) A salt containing a metal ion surrounded by other ions or molecules. (ii) A base which is soluble in water.

Discussion

4903.	(i) How is ammonia gas prepared in laboratory starting from NH4Cl? State the conditions and balanced equation for the preparation.(ii) How is gas collected in a gas jar?(iii) Name the substance used for drying ammonia gas. Why cannot substances such as conc. H2SO4, anhydrous calcium chloride and phosphorus pentoxide be used for drying ammonia gas?
Answer» (i) How is ammonia gas prepared in laboratory starting from NH₄Cl? State the conditions and balanced equation for the preparation. (ii) How is gas collected in a gas jar? (iii) Name the substance used for drying ammonia gas. Why cannot substances such as conc. H₂SO₄, anhydrous calcium chloride and phosphorus pentoxide be used for drying ammonia gas?

Discussion

4904.	Give the names of the following functional groups:—OH, >C = O, —CHO, —COOH
Answer» Give the names of the following functional groups: —OH, >C = O, —CHO, —COOH

Discussion

4905.	On the basis of electronic configuration, how will you identify the first and the last element of a period?
Answer» On the basis of electronic configuration, how will you identify the first and the last element of a period?

Discussion

4906.	The number of position isomers of the compound C6H12 is
Answer» The number of position isomers of the compound $C_{6} H_{12}$ is

Discussion

4907.	124.A nucleus of mass 220amu in free state decays to emit an alpha particle. Kinetic energy of the alpha emitted is 5.4MeV. The recoil energy of daughter nucleus is
Answer» 124.A nucleus of mass 220amu in free state decays to emit an alpha particle. Kinetic energy of the alpha emitted is 5.4MeV. The recoil energy of daughter nucleus is

Discussion

4908.	89 In fluorobenzene or any halo benzene the electron density is maximum at which position??
Answer» 89 In fluorobenzene or any halo benzene the electron density is maximum at which position??

Discussion

4909.	Write the composition of the alloy called bronze. Give two uses of bronze.
Answer» Write the composition of the alloy called bronze. Give two uses of bronze.

Discussion

4910.	What is the preparation of Baking power and Sodium Hydroxide?
Answer» What is the preparation of Baking power and Sodium Hydroxide?

Discussion

4911.	What is the molar ratio of sulphur to oxygen added to produce sulphur dioxide in the contact process?
Answer» What is the molar ratio of sulphur to oxygen added to produce sulphur dioxide in the contact process?

Discussion

4912.	41 2.8g of CO have a volume of x L at STP. What will be the molecular mass of another gas A, if 3.5 g of gas A occupied a volume of 2x L under the same condition.
Answer» 41 2.8g of CO have a volume of x L at STP. What will be the molecular mass of another gas A, if 3.5 g of gas A occupied a volume of 2x L under the same condition.

Discussion

4913.	what is teh difference between homoatomic molecules and hetroatomic molecules?
Answer» what is teh difference between homoatomic molecules and hetroatomic molecules?

Discussion

4914.	Ram, Mohan and Sohan are partners with capitals of Rs 5,00,000, Rs 2,50,000 and 2,00,000 respectively. After providing interest on capital 10% pa the profits are divisible as follows Ram 12, Mohan 13 and Sohan 16. But Ram and Mohan have guaranteed that Sohan's share in the profit shall not be less than Rs 25,000, in any year. The net profit for the year ended March 31, 2007 is Rs 2,00,000, before charging interest on capital. You are required to show distribution of profit.
Answer» Ram, Mohan and Sohan are partners with capitals of Rs 5,00,000, Rs 2,50,000 and 2,00,000 respectively. After providing interest on capital 10% pa the profits are divisible as follows Ram $\frac{1}{2}$ , Mohan $\frac{1}{3}$ and Sohan $\frac{1}{6}$ . But Ram and Mohan have guaranteed that Sohan's share in the profit shall not be less than Rs 25,000, in any year. The net profit for the year ended March 31, 2007 is Rs 2,00,000, before charging interest on capital. You are required to show distribution of profit.

4914.

Ram, Mohan and Sohan are partners with capitals of Rs 5,00,000, Rs 2,50,000 and 2,00,000 respectively. After providing interest on capital 10% pa the profits are divisible as follows Ram 12, Mohan 13 and Sohan 16. But Ram and Mohan have guaranteed that Sohan's share in the profit shall not be less than Rs 25,000, in any year. The net profit for the year ended March 31, 2007 is Rs 2,00,000, before charging interest on capital. You are required to show distribution of profit.

Answer»

Ram, Mohan and Sohan are partners with capitals of Rs 5,00,000, Rs 2,50,000 and 2,00,000 respectively. After providing interest on capital 10% pa the profits are divisible as follows Ram $\frac{1}{2}$ , Mohan $\frac{1}{3}$ and Sohan $\frac{1}{6}$ . But Ram and Mohan have guaranteed that Sohan's share in the profit shall not be less than Rs 25,000, in any year. The net profit for the year ended March 31, 2007 is Rs 2,00,000, before charging interest on capital.

You are required to show distribution of profit.

Discussion

4915.	The equivalent mass of KCl.MgCl2.6H2O is(M = Molar mass of salt)(1) M (2) M/6 (3) M/2 (4) M/3
Answer» The equivalent mass of KCl.MgCl2.6H2O is (M = Molar mass of salt) (1) M (2) M/6 (3) M/2 (4) M/3

Discussion

4916.	(a) In Mendeleev’s periodic table, a gap was not left for one of the following elements. This element is : (a) gallium (b) beryllium (c) germanium (d) scandium
Answer» (a) In Mendeleev’s periodic table, a gap was not left for one of the following elements. This element is : (a) gallium (b) beryllium (c) germanium (d) scandium

4916.

(a) In Mendeleev’s periodic table, a gap was not left for one of the following elements. This element is : (a) gallium (b) beryllium (c) germanium (d) scandium

Answer»

(a) In Mendeleev’s periodic table, a gap was not left for one of the following elements. This element is :

(a) gallium (b) beryllium (c) germanium (d) scandium

Discussion

4917.	WHY THE FIRST THREE MEMBERS OF THE ALKANE GROUP CANNOT FORM ISOMERS? PLEASE PROVIDE EXPLANATION!
Answer» WHY THE FIRST THREE MEMBERS OF THE ALKANE GROUP CANNOT FORM ISOMERS? PLEASE PROVIDE EXPLANATION!

Discussion

4918.	At 25∘, the total pressure of an ideal solution obtained by mixing 3 mole of A and 2 mole of B, is 184 torr. What is the vapour pressure ( in torr) of pure B at the same temperature (Vapour pressure of A at 25∘C is 200 torr.)?
Answer» At $25^{\circ}$ , the total pressure of an ideal solution obtained by mixing $3$ mole of $A$ and $2$ mole of $B$ , is $184 torr$ . What is the vapour pressure ( in $torr$ ) of pure $B$ at the same temperature (Vapour pressure of $A$ at $25^{\circ} C$ is $200 torr$ .)?

Discussion

4919.	In the refining of silver, the recovery of silver from silver nitrate solution displacement by copper metal . Write down the chemical equation of the reaction involved.
Answer» In the refining of silver, the recovery of silver from silver nitrate solution displacement by copper metal . Write down the chemical equation of the reaction involved.

Discussion

4920.	(a) What is an alkyl group?(b) Give the names of any three alkyl groups. How are they formed?
Answer» (a) What is an alkyl group? (b) Give the names of any three alkyl groups. How are they formed?

Discussion

4921.	10 mL of a solution of NaOH is found to be completely neutralized by 8 mL of a given solution of HCl. If we take 20 mL of the same solution of NaOH, the amount of HCl solution (the same solution as before) required to neutralize it will be:1. 4 mL2. 8 mL3. 12 mL4. 16 mL
Answer» 10 mL of a solution of NaOH is found to be completely neutralized by 8 mL of a given solution of HCl. If we take 20 mL of the same solution of NaOH, the amount of HCl solution (the same solution as before) required to neutralize it will be: 1. 4 mL 2. 8 mL 3. 12 mL 4. 16 mL

Discussion

4922.	When one carbon atom is attached to four other carbon atoms (like the central carbon in 2,2-Dimethylpropane), it is said to be ___
Answer» When one carbon atom is attached to four other carbon atoms (like the central carbon in 2,2-Dimethylpropane), it is said to be ___

Discussion

4923.	Question 2List the points of differences between homogeneous and heterogeneous mixtures.
Answer» Question 2 List the points of differences between homogeneous and heterogeneous mixtures.

Discussion

4924.	61. State the main advantage of molality over molarity as the unit of concentration and explain how molarity of solution can be converted to molality
Answer» 61. State the main advantage of molality over molarity as the unit of concentration and explain how molarity of solution can be converted to molality

Discussion

4925.	How to find n factor for salts and how to calculate cationic charge
Answer» How to find n factor for salts and how to calculate cationic charge

Discussion

4926.	A 20 mL solution of hydrogen peroxide reacts quantitatively with a 20 mL solution of KMnO4 acidified with dilute H2SO4. The same volume of the KMnO4 solution is decolourised by 10 mL of MnSO4 in neutral medium simultaneously forming a dark brown precipitated of hydrated MnO2. The brown precipitate is dissolved in 20 mL of 0.2 M sodium oxalate under boiling condition in the presence of dilute H2SO4. Calculate the volume strength of H2O2.
Answer» A $20 mL$ solution of hydrogen peroxide reacts quantitatively with a $20 mL$ solution of $K M n O_{4}$ acidified with dilute $H_{2} S O_{4}$ . The same volume of the $K M n O_{4}$ solution is decolourised by $10 mL$ of $M n S O_{4}$ in neutral medium simultaneously forming a dark brown precipitated of hydrated $M n O_{2}$ . The brown precipitate is dissolved in $20 mL$ of $0.2 M$ sodium oxalate under boiling condition in the presence of dilute $H_{2} S O_{4}$ . Calculate the volume strength of $H_{2} O_{2}$ .

Discussion

4927.	A monocyclic aromatic hydrocarbon contains:
Answer» A monocyclic aromatic hydrocarbon contains:

Discussion

4928.	Question 5 (a)How will you name the following compounds?
Answer» Question 5 (a) How will you name the following compounds?

Discussion

4929.	for the reaction 2H^+(1M)+ 2e^-→ H2 (1 atm) PH of the solution is
Answer» for the reaction 2H^+(1M)+ 2e^-→ H2 (1 atm) PH of the solution is

Discussion

4930.	(a) Define (i) oxidation, and (ii) reduction.(b) Identify the substances oxidised and reduced in the chemical reaction:MnO2 + 4HCl → MnCl2 + Cl2 + 2H2O
Answer» (a) Define (i) oxidation, and (ii) reduction. (b) Identify the substances oxidised and reduced in the chemical reaction: MnO₂ + 4HCl → MnCl₂+ Cl₂+ 2H₂O

Discussion

4931.	Na, Mg and Al are the elements of the 3rd period of the Modern Periodic Table having group number 1, 2 and 13 respectively. Which one of these elements has the (a) highest valency, (b) largest atomic radius, and (c) maximum chemical reactivity ? justify your answer stating the reason for each.
Answer» Na, Mg and Al are the elements of the 3rd period of the Modern Periodic Table having group number 1, 2 and 13 respectively. Which one of these elements has the (a) highest valency, (b) largest atomic radius, and (c) maximum chemical reactivity ? justify your answer stating the reason for each.

Discussion

4932.	47. Which of the following metal do not evolve H2 gas from dilute acid options are A(E^° A+/A=0.25V),B(E^° B/B+=0.22V),C(E^° C+/C=-0.30V),D(E^° D/D+=0.44V)
Answer» 47. Which of the following metal do not evolve H2 gas from dilute acid options are A(E^° A+/A=0.25V),B(E^° B/B+=0.22V),C(E^° C+/C=-0.30V),D(E^° D/D+=0.44V)

Discussion

4933.	Question 38During extraction of metals, electrolytic refining is used to obtain pure metals.(a) Which material will be used as anode and cathode for refining of silver metal by this process?(b) Suggest a suitable electrolyte also.(c) In this electrolytic cell, where do we get pure silver after passing electric current?
Answer» Question 38 During extraction of metals, electrolytic refining is used to obtain pure metals. (a) Which material will be used as anode and cathode for refining of silver metal by this process? (b) Suggest a suitable electrolyte also. (c) In this electrolytic cell, where do we get pure silver after passing electric current?

Discussion

4934.	Which of the following is/are strong electrolytes?
Answer» Which of the following is/are strong electrolytes?

Discussion

4935.	On a ship sailing in the Pacific ocean, where the temperature is 23.4∘C, a balloon is filled with 2 L air. What will be the volume of the balloon when the ship reaches the Indian ocean where the temperature is 26.1∘C ?
Answer» On a ship sailing in the Pacific ocean, where the temperature is 23.4 $^{\circ}$ C, a balloon is filled with 2 L air. What will be the volume of the balloon when the ship reaches the Indian ocean where the temperature is 26.1 $^{\circ}$ C ?

Discussion

4936.	Why PCl3Br2 is polar but PCl2Br3 is non polar ??
Answer» Why PCl3Br2 is polar but PCl2Br3 is non polar ??

Discussion

4937.	In which of the following diffusion does not occur?
Answer» In which of the following diffusion does not occur?

Discussion

4938.	The questions below are related to the manufacture of ammonia.(i) Name the process.(ii) In what ratio must the reactants be taken?(iii) Name the catalyst used.(iv) Give the equation for the manufacture of ammonia.(v) Ammonia can act as a reducing agent-write a relevant equation for such a reaction.
Answer» The questions below are related to the manufacture of ammonia. (i) Name the process. (ii) In what ratio must the reactants be taken? (iii) Name the catalyst used. (iv) Give the equation for the manufacture of ammonia. (v) Ammonia can act as a reducing agent-write a relevant equation for such a reaction.

Discussion

4939.	What is an amalgam? Name one metal which does not form amalgam? State one use of amalgam.
Answer» What is an amalgam? Name one metal which does not form amalgam? State one use of amalgam.

Discussion

4940.	In a Lead-Acid Accumulator, as you draw power, both the anode and cathode undergo chemical reactions that progressively change them into
Answer» In a Lead-Acid Accumulator, as you draw power, both the anode and cathode undergo chemical reactions that progressively change them into

Discussion

4941.	What would be the electron dot structure of carbon dioxide which has the formula CO2?
Answer» What would be the electron dot structure of carbon dioxide which has the formula CO₂?

Discussion

4942.	Calculate the relative molecular masses of (Use K = 39, Cl = 35.5, O = 16, C = 12, H = 1, Na = 23, N = 14, S = 32)(a) potassium chlorate(b) sodium acetate(c) chloroform(d) ammonium sulphate
Answer» Calculate the relative molecular masses of (Use K = 39, Cl = 35.5, O = 16, C = 12, H = 1, Na = 23, N = 14, S = 32) (a) potassium chlorate (b) sodium acetate (c) chloroform (d) ammonium sulphate

Discussion

4943.	What volume of O2 at stp will librate when 4 moles of kclO3 is decomposed??
Answer» What volume of O2 at stp will librate when 4 moles of kclO3 is decomposed??

Discussion

4944.	Among the given reactions, the number of reactions in which alcohol is formed as a product is:
Answer» Among the given reactions, the number of reactions in which alcohol is formed as a product is:

Discussion

4945.	how to find atomic no. if group and period are given
Answer» how to find atomic no. if group and period are given

Discussion

4946.	Define combination reaction. Give an example of a combination reaction that is also exothermic.
Answer» Define combination reaction. Give an example of a combination reaction that is also exothermic.

Discussion

4947.	In the electrolytic extraction of aluminium, the substances which are not used to reduce the melting point of alumina are:
Answer» In the electrolytic extraction of aluminium, the substances which are not used to reduce the melting point of alumina are:

Discussion

4948.	33.Arrange these in correct order of atomic radius with reason K ; K+ ; Sr; Sr2+
Answer» 33.Arrange these in correct order of atomic radius with reason K ; K+ ; Sr; Sr2+

Discussion

4949.	The reaction in which energy is absorbed is called as an _____________.
Answer» The reaction in which energy is absorbed is called as an _____________.

Discussion

4950.	The electronic configuration of gadolinium is ____________ .
Answer» The electronic configuration of gadolinium is ____________ .

Discussion

Explore topic-wise InterviewSolutions in .

The percentage of nitrogen by mass in ammonium sulphate is closest to (atomic masses H = 1, N = 14, O = 16, S = 32)

What are the terms defined in (i) and (ii) below?(i) A salt containing a metal ion surrounded by other ions or molecules.(ii) A base which is soluble in water.

Give the names of the following functional groups:—OH, >C = O, —CHO, —COOH

On the basis of electronic configuration, how will you identify the first and the last element of a period?

The number of position isomers of the compound C6H12 is

124.A nucleus of mass 220amu in free state decays to emit an alpha particle. Kinetic energy of the alpha emitted is 5.4MeV. The recoil energy of daughter nucleus is

89 In fluorobenzene or any halo benzene the electron density is maximum at which position??

Write the composition of the alloy called bronze. Give two uses of bronze.

What is the preparation of Baking power and Sodium Hydroxide?

What is the molar ratio of sulphur to oxygen added to produce sulphur dioxide in the contact process?

41 2.8g of CO have a volume of x L at STP. What will be the molecular mass of another gas A, if 3.5 g of gas A occupied a volume of 2x L under the same condition.

what is teh difference between homoatomic molecules and hetroatomic molecules?

The equivalent mass of KCl.MgCl2.6H2O is(M = Molar mass of salt)(1) M (2) M/6 (3) M/2 (4) M/3

(a) In Mendeleev’s periodic table, a gap was not left for one of the following elements. This element is : (a) gallium (b) beryllium (c) germanium (d) scandium

WHY THE FIRST THREE MEMBERS OF THE ALKANE GROUP CANNOT FORM ISOMERS? PLEASE PROVIDE EXPLANATION!

At 25∘, the total pressure of an ideal solution obtained by mixing 3 mole of A and 2 mole of B, is 184 torr. What is the vapour pressure ( in torr) of pure B at the same temperature (Vapour pressure of A at 25∘C is 200 torr.)?

In the refining of silver, the recovery of silver from silver nitrate solution displacement by copper metal . Write down the chemical equation of the reaction involved.

(a) What is an alkyl group?(b) Give the names of any three alkyl groups. How are they formed?

10 mL of a solution of NaOH is found to be completely neutralized by 8 mL of a given solution of HCl. If we take 20 mL of the same solution of NaOH, the amount of HCl solution (the same solution as before) required to neutralize it will be:1. 4 mL2. 8 mL3. 12 mL4. 16 mL

When one carbon atom is attached to four other carbon atoms (like the central carbon in 2,2-Dimethylpropane), it is said to be ___

Question 2List the points of differences between homogeneous and heterogeneous mixtures.

61. State the main advantage of molality over molarity as the unit of concentration and explain how molarity of solution can be converted to molality

How to find n factor for salts and how to calculate cationic charge

A monocyclic aromatic hydrocarbon contains:

Question 5 (a)How will you name the following compounds?​

for the reaction 2H^+(1M)+ 2e^-→ H2 (1 atm) PH of the solution is

(a) Define (i) oxidation, and (ii) reduction.(b) Identify the substances oxidised and reduced in the chemical reaction:MnO2 + 4HCl → MnCl2 ​+ Cl2 + 2H2O

Na, Mg and Al are the elements of the 3rd period of the Modern Periodic Table having group number 1, 2 and 13 respectively. Which one of these elements has the (a) highest valency, (b) largest atomic radius, and (c) maximum chemical reactivity ? justify your answer stating the reason for each.

47. Which of the following metal do not evolve H2 gas from dilute acid options are A(E^° A+/A=0.25V),B(E^° B/B+=0.22V),C(E^° C+/C=-0.30V),D(E^° D/D+=0.44V)

Which of the following is/are strong electrolytes?

On a ship sailing in the Pacific ocean, where the temperature is 23.4∘C, a balloon is filled with 2 L air. What will be the volume of the balloon when the ship reaches the Indian ocean where the temperature is 26.1∘C ?

Why PCl3Br2 is polar but PCl2Br3 is non polar ??

In which of the following diffusion does not occur?

The questions below are related to the manufacture of ammonia.(i) Name the process.(ii) In what ratio must the reactants be taken?(iii) Name the catalyst used.(iv) Give the equation for the manufacture of ammonia.(v) Ammonia can act as a reducing agent-write a relevant equation for such a reaction.

What is an amalgam? Name one metal which does not form amalgam? State one use of amalgam.

In a Lead-Acid Accumulator, as you draw power, both the anode and cathode undergo chemical reactions that progressively change them into

What would be the electron dot structure of carbon dioxide which has the formula CO2?

Calculate the relative molecular masses of (Use K = 39, Cl = 35.5, O = 16, C = 12, H = 1, Na = 23, N = 14, S = 32)(a) potassium chlorate(b) sodium acetate(c) chloroform(d) ammonium sulphate

What volume of O2 at stp will librate when 4 moles of kclO3 is decomposed??

Among the given reactions, the number of reactions in which alcohol is formed as a product is:

how to find atomic no. if group and period are given

Define combination reaction. Give an example of a combination reaction that is also exothermic.

In the electrolytic extraction of aluminium, the substances which are not used to reduce the melting point of alumina are:

33.Arrange these in correct order of atomic radius with reason K ; K+ ; Sr; Sr2+

The reaction in which energy is absorbed is called as an _____________.

The electronic configuration of gadolinium is ____________ .

Question 5 (a)How will you name the following compounds?

(a) Define (i) oxidation, and (ii) reduction.(b) Identify the substances oxidised and reduced in the chemical reaction:MnO2 + 4HCl → MnCl2 + Cl2 + 2H2O