15280 + Interview Questions in Chemistry Page 246 InterviewSolution

12251.	Name one method for the refining of metals.
Answer» Name one method for the refining of metals.

Discussion

12252.	The X and Y from the reaction given below, respectively are:
Answer» The X and Y from the reaction given below, respectively are:

Discussion

12253.	What is baking sada ? write the chemical name of baking soda. Give the important uses of baking soda. How does baking soda differ chemically from washing soda?
Answer» What is baking sada ? write the chemical name of baking soda. Give the important uses of baking soda. How does baking soda differ chemically from washing soda?

Discussion

12254.	Consider the following elements : Be, Li, Na, Ca, K.Name the elements of (a) same group (b) same period.
Answer» Consider the following elements : Be, Li, Na, Ca, K.Name the elements of (a) same group (b) same period.

Discussion

12255.	Write the general formulae of the following homologous series. (i) Aldehydes (ii) Ketones (iii) Alkyne
Answer» Write the general formulae of the following homologous series. (i) Aldehydes (ii) Ketones (iii) Alkyne

Discussion

12256.	Carbon has highest thermal conductivity of any known substance. Then why carbon rotted tools don't overheat and are extensively used for striking and cutting proposes? Is it that the good thermal conductors don't overheat? Please explain.
Answer» Carbon has highest thermal conductivity of any known substance. Then why carbon rotted tools don't overheat and are extensively used for striking and cutting proposes? Is it that the good thermal conductors don't overheat? Please explain.

Discussion

12257.	Calculate the number of atoms in 52 amu of Helium.
Answer» Calculate the number of atoms in 52 amu of Helium.

Discussion

12258.	Name the functional group present in an organic compound which gives brisk effervescence with NaHCO3.
Answer» Name the functional group present in an organic compound which gives brisk effervescence with $N a H C O_{3}$ .

Discussion

12259.	On passing a current of HCl gas in a saturated solution of NaCl, the solubility of NaCl ________
Answer» On passing a current of HCl gas in a saturated solution of NaCl, the solubility of NaCl ________

Discussion

12260.	In which of the following reactions is sulphur dioxide released?
Answer» In which of the following reactions is sulphur dioxide released?

Discussion

12261.	Hydrogen and oxygen combine in a ratio of 1:8 by mass to form water. What mass of oxygen gas is required to react completely with 3g of hydrogen gas?
Answer» Hydrogen and oxygen combine in a ratio of 1:8 by mass to form water. What mass of oxygen gas is required to react completely with 3g of hydrogen gas?

Discussion

12262.	What exactly the chapter carbon and its compounds deals with
Answer» What exactly the chapter carbon and its compounds deals with

Discussion

12263.	Are soap molecules hydrophobic or hydrophilic in nature
Answer» Are soap molecules hydrophobic or hydrophilic in nature

Discussion

12264.	Let E denotes the event "India scores less than 300” in a cricket match between India and South Africa. How many elements are there in the sample space which will favor the event E? ___
Answer» Let E denotes the event "India scores less than 300” in a cricket match between India and South Africa. How many elements are there in the sample space which will favor the event E? ___

Discussion

12265.	Observe the following figure and identify electrolyte Z.
Answer» Observe the following figure and identify electrolyte Z.

Discussion

12266.	Which of the following sets of orbitals is arranged in order of increasing energy?
Answer» Which of the following sets of orbitals is arranged in order of increasing energy?

Discussion

12267.	How to find the names of different formpl by nomenculture
Answer» How to find the names of different formpl by nomenculture

Discussion

12268.	What is garbage? What does garbage consist of?
Answer» What is garbage? What does garbage consist of?

Discussion

12269.	Cu is obtained by self reduction.?how
Answer» Cu is obtained by self reduction.?how

Discussion

12270.	What is the difference between reversible adiabatic process and irreversible adiabatic process?
Answer» What is the difference between reversible adiabatic process and irreversible adiabatic process?

Discussion

12271.	Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of the given atomic species?
Answer» Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of the given atomic species?

Discussion

12272.	(a) What is the general name of the organic compounds containing the −O\|\|C− group? (b) Which of the following compounds contains a carboxylic acid group? CH3OH, CH3COOH, CH3CHO, CH3COCH3 (c) How would you name the following compound? H−H\|C=0
Answer» (a) What is the general name of the organic compounds containing the $- O \| \| C -$ group? (b) Which of the following compounds contains a carboxylic acid group? $C H_{3} O H, C H_{3} C O O H, C H_{3} C H O, C H_{3} C O C H_{3}$ (c) How would you name the following compound? $H - H \| C = 0$

Discussion

12273.	Question 3.2 Identify the substance that is oxidized and the substance that is reduced in the following reaction: CuO(s)+H2(g)→Cu(s)+H2O(l)
Answer» Question 3.2 Identify the substance that is oxidized and the substance that is reduced in the following reaction: $CuO(s) + H_{2} (g) \to Cu(s) + H_{2} O(l)$

Discussion

12274.	Suhani took 2 beakers A and B. In beaker A she added 500ml of dil.HCl and in beaker B she added 500ml of conc. Acetic acid.Which among the two is more acidic?
Answer» Suhani took 2 beakers A and B. In beaker A she added 500ml of dil.HCl and in beaker B she added 500ml of conc. Acetic acid.Which among the two is more acidic?

Discussion

12275.	(a) What will happen if heating is not controlled while preparing plaster of Paris? (b) Write an equation to show the reaction between the plaster of Paris and water.
Answer» (a) What will happen if heating is not controlled while preparing plaster of Paris? (b) Write an equation to show the reaction between the plaster of Paris and water.

12275.

(a) What will happen if heating is not controlled while preparing plaster of Paris? (b) Write an equation to show the reaction between the plaster of Paris and water.

Answer»

(a) What will happen if heating is not controlled while preparing plaster of Paris?

(b) Write an equation to show the reaction between the plaster of Paris and water.

Discussion

12276.	(a) Which property of sulphuric acid accounts for its use as a dehydrating agent ? (b) Concentrated sulphuric acid is both an oxidizing agent and a non-volatile acid. Write on equation each to illustrate the above mentioned properties of sulphuric acid.
Answer» (a) Which property of sulphuric acid accounts for its use as a dehydrating agent ? (b) Concentrated sulphuric acid is both an oxidizing agent and a non-volatile acid. Write on equation each to illustrate the above mentioned properties of sulphuric acid.

12276.

(a) Which property of sulphuric acid accounts for its use as a dehydrating agent ? (b) Concentrated sulphuric acid is both an oxidizing agent and a non-volatile acid. Write on equation each to illustrate the above mentioned properties of sulphuric acid.

Answer»

(a) Which property of sulphuric acid accounts for its use as a dehydrating agent ?

(b) Concentrated sulphuric acid is both an oxidizing agent and a non-volatile acid. Write on equation each to illustrate the above mentioned properties of sulphuric acid.

Discussion

12277.	Is there any formula for calculating the number of isomers in a compound?
Answer» Is there any formula for calculating the number of isomers in a compound?

Discussion

12278.	Question 62 (i) Given below are the steps for extraction of copper from its ore. Write the reaction involved. (a) Roasting of copper (I) sulphide. (b) Reduction of copper (I) oxide with copper (I) sulphide. (c) Electrolytic refining. (ii) Draw a neat and well-labelled diagram for electrolytic refining of copper.
Answer» Question 62 (i) Given below are the steps for extraction of copper from its ore. Write the reaction involved. (a) Roasting of copper (I) sulphide. (b) Reduction of copper (I) oxide with copper (I) sulphide. (c) Electrolytic refining. (ii) Draw a neat and well-labelled diagram for electrolytic refining of copper.

Discussion

12279.	Which of the following pair of reactants can undergo a displacement reaction under appropriate conditions? (a) MgSO4+Fe (b) ZnSO4+Fe (c) MgSO4+Pb (d) CuSO4+Fe
Answer» Which of the following pair of reactants can undergo a displacement reaction under appropriate conditions? (a) $M g S O_{4} + F e$ (b) $Z n S O_{4} + F e$ (c) $M g S O_{4} + P b$ (d) $C u S O_{4} + F e$

12279.

Which of the following pair of reactants can undergo a displacement reaction under appropriate conditions? (a) MgSO4+Fe (b) ZnSO4+Fe (c) MgSO4+Pb (d) CuSO4+Fe

Answer»

Which of the following pair of reactants can undergo a displacement reaction under appropriate conditions?
(a) $M g S O_{4} + F e$

(b) $Z n S O_{4} + F e$

(c) $M g S O_{4} + P b$

(d) $C u S O_{4} + F e$

Discussion

12280.	How is tensile strength can be a characteristic for making heating appliances?
Answer» How is tensile strength can be a characteristic for making heating appliances?

Discussion

12281.	What is difference between washing soda and soda ash?
Answer» What is difference between washing soda and soda ash?

Discussion

12282.	Give the full form of IBA.
Answer» Give the full form of IBA.

Discussion

12283.	An organic compound C(molecular formula C2 H4 O2) reacts with sodium metal to form a compound B and evolves a gas which burns with a pop sound.Compound C on treatment with an alcohol A in presence of an acid forms a sweet smelling compound S(molecular formula C4 H8 O2).On addition of sodium hydroxide to C it also gives B and water.S on treatment with Sodium Hydroxide solution gives back B and A. Identify A,B,C and and write chemical equation for all the four reactions involved.
Answer» An organic compound C(molecular formula C2 H4 O2) reacts with sodium metal to form a compound B and evolves a gas which burns with a pop sound.Compound C on treatment with an alcohol A in presence of an acid forms a sweet smelling compound S(molecular formula C4 H8 O2).On addition of sodium hydroxide to C it also gives B and water.S on treatment with Sodium Hydroxide solution gives back B and A. Identify A,B,C and and write chemical equation for all the four reactions involved.

Discussion

12284.	what are the diffrences between autotrophic nutrition and heterotrophic nutrition?
Answer» what are the diffrences between autotrophic nutrition and heterotrophic nutrition?

Discussion

12285.	Why can't copper displace iron from copper sulphate solution?
Answer» Why can't copper displace iron from copper sulphate solution?

Discussion

12286.	Which type of alkene has high boiling point of cis and alkene and why?
Answer» Which type of alkene has high boiling point of cis and alkene and why?

Discussion

12287.	What is the pH value of potassium nitrate salt?
Answer» What is the pH value of potassium nitrate salt?

12287.

What is the pH value of potassium nitrate salt?

Answer»

What is the pH value of potassium nitrate salt?

Discussion

12288.	If equal volume of all gases under similar conditions of temp and pressure contains the same number of molecules. Then if 90cm3 of fluorine contains Y molecules then how many molecules of argon will be there in 18cm3of argon gas under the same temperature and pressure.
Answer» If equal volume of all gases under similar conditions of temp and pressure contains the same number of molecules. Then if $90 c m^{3}$ of fluorine contains Y molecules then how many molecules of argon will be there in $18 c m^{3}$ of argon gas under the same temperature and pressure.

Discussion

12289.	According to the Enemy property (Amendment and validation) Ordinance, 2016 which of the following nations are enemy countries, Code:
Answer» According to the Enemy property (Amendment and validation) Ordinance, 2016 which of the following nations are enemy countries, Code:

12289.

According to the Enemy property (Amendment and validation) Ordinance, 2016 which of the following nations are enemy countries, Code:

Answer»

According to the Enemy property (Amendment and validation) Ordinance, 2016 which of the following nations are enemy countries,

Code:

Discussion

12290.	We consider the radiation emitted by the human body. Which of the following statements is true
Answer» We consider the radiation emitted by the human body. Which of the following statements is true

Discussion

12291.	Considering the elements B, C, N, F and Si, the correct order of their non-metallic character is:
Answer» Considering the elements B, C, N, F and Si, the correct order of their non-metallic character is:

Discussion

12292.	The electron affinity of Be is almost similar to that of?
Answer» The electron affinity of Be is almost similar to that of?

Discussion

12293.	What is the difference between ionic, covalent and metallic bonds?
Answer» What is the difference between ionic, covalent and metallic bonds?

Discussion

12294.	In ostwald proces ammonia gas and air are taken in 1: ___ ratio.
Answer» In ostwald proces ammonia gas and air are taken in 1: ___ ratio.

Discussion

12295.	What happens when nitrogen dioxide and oxygen present in the air react with water?
Answer» What happens when nitrogen dioxide and oxygen present in the air react with water?

Discussion

12296.	What do you mean by alkali metals??Please explain THANX FOR THE ANSWER😊
Answer» What do you mean by alkali metals??Please explain THANX FOR THE ANSWER😊

Discussion

12297.	small quantity of light green coloured substance is heated .in the beginning, it loses some water and then suffocating gas is evolved and a red residue is left behind. Answer the following: a) Name the red residue and write its formula. b) Name the suffocating gas or gases and write its formula. c) Name the light green coloured substance and write its formula.
Answer» small quantity of light green coloured substance is heated .in the beginning, it loses some water and then suffocating gas is evolved and a red residue is left behind. Answer the following: a) Name the red residue and write its formula. b) Name the suffocating gas or gases and write its formula. c) Name the light green coloured substance and write its formula.

Discussion

12298.	A covalent bond is formed by____.
Answer» A covalent bond is formed by____.

Discussion

12299.	Define term anode mud. Name the electrode made of pure metal
Answer» Define term anode mud. Name the electrode made of pure metal

Discussion

12300.	What is 10%law? Explain with an example?
Answer» What is 10%law? Explain with an example?

Discussion

Explore topic-wise InterviewSolutions in .

Name one method for the refining of metals.

The X and Y from the reaction given below, respectively are:

What is baking sada ? write the chemical name of baking soda. Give the important uses of baking soda. How does baking soda differ chemically from washing soda?

Consider the following elements : Be, Li, Na, Ca, K.Name the elements of (a) same group (b) same period.

Write the general formulae of the following homologous series. (i) Aldehydes (ii) Ketones (iii) Alkyne

Carbon has highest thermal conductivity of any known substance. Then why carbon rotted tools don't overheat and are extensively used for striking and cutting proposes? Is it that the good thermal conductors don't overheat? Please explain.

Calculate the number of atoms in 52 amu of Helium.

Name the functional group present in an organic compound which gives brisk effervescence with NaHCO3.

On passing a current of HCl gas in a saturated solution of NaCl, the solubility of NaCl ________

In which of the following reactions is sulphur dioxide released?

Hydrogen and oxygen combine in a ratio of 1:8 by mass to form water. What mass of oxygen gas is required to react completely with 3g of hydrogen gas?

What exactly the chapter carbon and its compounds deals with

Are soap molecules hydrophobic or hydrophilic in nature

Let E denotes the event "India scores less than 300” in a cricket match between India and South Africa. How many elements are there in the sample space which will favor the event E? ___

Observe the following figure and identify electrolyte Z.

Which of the following sets of orbitals is arranged in order of increasing energy?

How to find the names of different formpl by nomenculture

What is garbage? What does garbage consist of?

Cu is obtained by self reduction.?how

What is the difference between reversible adiabatic process and irreversible adiabatic process?

Which one of the following arrangements represents the correct order of electron gain enthalpy (with negative sign) of the given atomic species?

(a) What is the general name of the organic compounds containing the −O||C− group? (b) Which of the following compounds contains a carboxylic acid group? CH3OH, CH3COOH, CH3CHO, CH3COCH3 (c) How would you name the following compound? H−H|C=0

Question 3.2 Identify the substance that is oxidized and the substance that is reduced in the following reaction: CuO(s)+H2(g)→Cu(s)+H2O(l)

Suhani took 2 beakers A and B. In beaker A she added 500ml of dil.HCl and in beaker B she added 500ml of conc. Acetic acid.Which among the two is more acidic?

(a) What will happen if heating is not controlled while preparing plaster of Paris? (b) Write an equation to show the reaction between the plaster of Paris and water.

(a) Which property of sulphuric acid accounts for its use as a dehydrating agent ? (b) Concentrated sulphuric acid is both an oxidizing agent and a non-volatile acid. Write on equation each to illustrate the above mentioned properties of sulphuric acid.

Is there any formula for calculating the number of isomers in a compound?

Which of the following pair of reactants can undergo a displacement reaction under appropriate conditions? (a) MgSO4+Fe (b) ZnSO4+Fe (c) MgSO4+Pb (d) CuSO4+Fe

How is tensile strength can be a characteristic for making heating appliances?

What is difference between washing soda and soda ash?

Give the full form of IBA.

what are the diffrences between autotrophic nutrition and heterotrophic nutrition?

Why can't copper displace iron from copper sulphate solution?

Which type of alkene has high boiling point of cis and alkene and why?

What is the pH value of potassium nitrate salt?

If equal volume of all gases under similar conditions of temp and pressure contains the same number of molecules. Then if 90cm3 of fluorine contains Y molecules then how many molecules of argon will be there in 18cm3of argon gas under the same temperature and pressure.

According to the Enemy property (Amendment and validation) Ordinance, 2016 which of the following nations are enemy countries, Code:

We consider the radiation emitted by the human body. Which of the following statements is true

Considering the elements B, C, N, F and Si, the correct order of their non-metallic character is:

The electron affinity of Be is almost similar to that of?

What is the difference between ionic, covalent and metallic bonds?

In ostwald proces ammonia gas and air are taken in 1: ___ ratio.

What happens when nitrogen dioxide and oxygen present in the air react with water?

What do you mean by alkali metals??Please explain THANX FOR THE ANSWER😊

A covalent bond is formed by____.

Define term anode mud. Name the electrode made of pure metal

What is 10%law? Explain with an example?