15280 + Interview Questions in Chemistry Page 240 InterviewSolution

11951.	An organism's specific role in its habitat is called ___ .
Answer» An organism's specific role in its habitat is called ___ .

Discussion

11952.	When food containing fat or oil is not used and left for long time,their smell and taste changes.Name the process which is responsible for the change.List two methods to prevent or slow down the above change
Answer» When food containing fat or oil is not used and left for long time,their smell and taste changes.Name the process which is responsible for the change.List two methods to prevent or slow down the above change

Discussion

11953.	Question 12 Which of the following gives the correct increasing order of the atomic radii of O, F and N? (a) O, F, N (b) N, F, O (c) O, N, F (d) F, O, N
Answer» Question 12 Which of the following gives the correct increasing order of the atomic radii of O, F and N? (a) O, F, N (b) N, F, O (c) O, N, F (d) F, O, N

Discussion

11954.	Carbon compounds can be easily is __ using suitable oxidizing agent like alkaline potassium permanganate to form carboxylic acids.
Answer» Carbon compounds can be easily is __ using suitable oxidizing agent like alkaline potassium permanganate to form carboxylic acids.

Discussion

11955.	Unsustainable harvesting of resources and species is ___.
Answer» Unsustainable harvesting of resources and species is ___.

Discussion

11956.	The pH of a solution in which the [H+] = 0.01, is
Answer» The pH of a solution in which the $[H^{+}]$ = $0.01$ , is

Discussion

11957.	(a) On which factors does purification of metals depend? (b) Name the methods used for purification. (c) How is electro-refining done?
Answer» (a) On which factors does purification of metals depend? (b) Name the methods used for purification. (c) How is electro-refining done?

11957.

(a) On which factors does purification of metals depend? (b) Name the methods used for purification. (c) How is electro-refining done?

Answer»

(a) On which factors does purification of metals depend?

(b) Name the methods used for purification.

(c) How is electro-refining done?

Discussion

11958.	When a mixture of iron powder and sulphur powder is heated strongly to form iron sulphide, then heat energy is : (a) released (b) first absorbed and then released (c) absorbed (d) neither absorbed nor released
Answer» When a mixture of iron powder and sulphur powder is heated strongly to form iron sulphide, then heat energy is : (a) released (b) first absorbed and then released (c) absorbed (d) neither absorbed nor released

11958.

When a mixture of iron powder and sulphur powder is heated strongly to form iron sulphide, then heat energy is : (a) released (b) first absorbed and then released (c) absorbed (d) neither absorbed nor released

Answer»

When a mixture of iron powder and sulphur powder is heated strongly to form iron sulphide, then heat energy is :

(a) released (b) first absorbed and then released

(c) absorbed (d) neither absorbed nor released

Discussion

11959.	Question 05. Sodium carbonate is a basic salt because it is a salt of (a) strong acid and strong base (b) weak acid and weak base (c) strong acid and weak base (d) weak acid and strong base
Answer» Question 05. Sodium carbonate is a basic salt because it is a salt of (a) strong acid and strong base (b) weak acid and weak base (c) strong acid and weak base (d) weak acid and strong base

Discussion

11960.	Which of the following gaseous samples contain the same number of moles at STP?
Answer» Which of the following gaseous samples contain the same number of moles at STP?

Discussion

11961.	Pb(NO3)2(aq)+2KCl(aq)→2KNO3(aq)+PbCl2(s) When lead nitrate solution is mixed with potassium chloride solution, a precipitate of lead chloride and solution of potassium nitrate are formed. This type of reaction is called _________________.
Answer» $P b (N O_{3})_{2} (a q) + 2 K C l (a q) \to 2 K N O_{3} (a q) + P b C l_{2} (s)$ When lead nitrate solution is mixed with potassium chloride solution, a precipitate of lead chloride and solution of potassium nitrate are formed. This type of reaction is called _________________.

11961.

Pb(NO3)2(aq)+2KCl(aq)→2KNO3(aq)+PbCl2(s) When lead nitrate solution is mixed with potassium chloride solution, a precipitate of lead chloride and solution of potassium nitrate are formed. This type of reaction is called _________________.

Answer»

$P b (N O_{3})_{2} (a q) + 2 K C l (a q) \to 2 K N O_{3} (a q) + P b C l_{2} (s)$

When lead nitrate solution is mixed with potassium chloride solution, a precipitate of lead chloride and solution of potassium nitrate are formed. This type of reaction is called _________________.

Discussion

11962.	The total number of shared electrons in the lewis dot structure of a O2 molecule is:4
Answer» The total number of shared electrons in the lewis dot structure of a $O_{2}$ molecule is: 4

Discussion

11963.	Give an example of a four-step food chain operating in grassland. Name the secondary consumer in this food chain
Answer» Give an example of a four-step food chain operating in grassland. Name the secondary consumer in this food chain

Discussion

11964.	Mond’s Process involves
Answer» Mond’s Process involves

Discussion

11965.	Percentage composition of hydrogen in benzene is _____.
Answer» Percentage composition of hydrogen in benzene is _____.

Discussion

11966.	How to prevent rusting? [3 MARKS]
Answer» How to prevent rusting? [3 MARKS]

Discussion

11967.	Is NH3 + HCl ------> NH4Cl an exothermic or endothermic reaction?
Answer» Is NH₃ + HCl ------> NH₄Cl an exothermic or endothermic reaction?

Discussion

11968.	Why carbon and its compounds are used as fuels for most applications?
Answer» Why carbon and its compounds are used as fuels for most applications?

Discussion

11969.	What is formic acid basically?
Answer» What is formic acid basically?

Discussion

11970.	In a solution of lead acetate, a strip of metal M was dipped. After some time, lead from the solution was deposited on the metal strip. Which metal is more reactive, M or lead?
Answer» In a solution of lead acetate, a strip of metal M was dipped. After some time, lead from the solution was deposited on the metal strip. Which metal is more reactive, M or lead?

Discussion

11971.	What is really an acid?
Answer» What is really an acid?

Discussion

11972.	What are the factors that affect the solubility of solid in liquid?
Answer» What are the factors that affect the solubility of solid in liquid?

Discussion

11973.	Calculate the number of atoms in each of the following : (a) 52 moles of He, (b) 52 Amu of He, (c) 52 g Of He.
Answer» Calculate the number of atoms in each of the following : (a) 52 moles of He, (b) 52 Amu of He, (c) 52 g Of He.

Discussion

11974.	What is the Atomic Mass of Cu?
Answer» What is the Atomic Mass of Cu?

Discussion

11975.	Silver and gold occur in the free state in nature state reason for the following ?
Answer» Silver and gold occur in the free state in nature state reason for the following ?

Discussion

11976.	Name: (a) The compound formed when acetic acid and ethanol react together (b) The reducing agent used to convert acetic acid to ethanol. (c) The substance used to change acetic acid to acetic anhydride. [3 MARKS]
Answer» Name: (a) The compound formed when acetic acid and ethanol react together (b) The reducing agent used to convert acetic acid to ethanol. (c) The substance used to change acetic acid to acetic anhydride. [3 MARKS]

Discussion

11977.	Does suffix of functional groups of oxygen work for methane also?
Answer» Does suffix of functional groups of oxygen work for methane also?

Discussion

11978.	Study the figure given below and name the gas which is responsible for the formation of effervescence.
Answer» Study the figure given below and name the gas which is responsible for the formation of effervescence.

Discussion

11979.	In the electrorefining process, the weight of ___ gets reduced.
Answer» In the electrorefining process, the weight of ___ gets reduced.

Discussion

11980.	1 amu or 1 u is defined as
Answer» 1 amu or 1 u is defined as

Discussion

11981.	Match the following: Column 1Column 2(p)Scrubber(i)1000 volts electrodes(q)Catalytic converter(ii)flue gas column(r)Electrostatic precipitator(iii)redox reactions
Answer» Match the following: $\begin{matrix} Column 1 & Column 2 (p) & Scrubber & (i) & 1000 volts electrodes (q) & Catalytic converter & (ii) & flue gas column (r) & Electrostatic precipitator & (iii) & redox reactions \end{matrix}$

Discussion

11982.	What volume of oxygen would be required for the complete combustion of 100 litres of ethane? The following equation is as follows: 2C2H6+7O2→4CO2+6H2O
Answer» What volume of oxygen would be required for the complete combustion of 100 litres of ethane? The following equation is as follows: $2 C_{2} H_{6} + 7 O_{2} \to 4 C O_{2} + 6 H_{2} O$

11982.

What volume of oxygen would be required for the complete combustion of 100 litres of ethane? The following equation is as follows: 2C2H6+7O2→4CO2+6H2O

Answer»

What volume of oxygen would be required for the complete combustion of 100 litres of ethane? The following equation is as follows:

$2 C_{2} H_{6} + 7 O_{2} \to 4 C O_{2} + 6 H_{2} O$

Discussion

11983.	What is Y in the reaction given below? CH3−CH2OHAlkaline KMnO4+Heat−−−−−−−−−−−−−−−−−→or acidified K2Cr2O7+Heat Y
Answer» What is Y in the reaction given below? $C H_{3} - C H_{2} O H Alkaline K M n O_{4} +Heat - ---------------- \to or acidified K_{2} C r_{2} O_{7} +Heat Y$

11983.

What is Y in the reaction given below? CH3−CH2OHAlkaline KMnO4+Heat−−−−−−−−−−−−−−−−−→or acidified K2Cr2O7+Heat Y

Answer»

What is Y in the reaction given below?

$C H_{3} - C H_{2} O H Alkaline K M n O_{4} +Heat - ---------------- \to or acidified K_{2} C r_{2} O_{7} +Heat Y$

Discussion

11984.	Consider the statements given below and choose the correct statements among them: 1. River capture, ox-bow lakes and meanders are features associated with upper course of a river. 2. River rejuvenation increases erosive power of a river and is a result of a positive movement in the base level of erosion. 3. The Nile, Ganges and Mekong have the bird’s foot delta Codes:
Answer» Consider the statements given below and choose the correct statements among them: 1. River capture, ox-bow lakes and meanders are features associated with upper course of a river. 2. River rejuvenation increases erosive power of a river and is a result of a positive movement in the base level of erosion. 3. The Nile, Ganges and Mekong have the bird’s foot delta Codes:

11984.

Consider the statements given below and choose the correct statements among them: 1. River capture, ox-bow lakes and meanders are features associated with upper course of a river. 2. River rejuvenation increases erosive power of a river and is a result of a positive movement in the base level of erosion. 3. The Nile, Ganges and Mekong have the bird’s foot delta Codes:

Answer»

Consider the statements given below and choose the correct statements among them:

1. River capture, ox-bow lakes and meanders are features associated with upper course of a river.

2. River rejuvenation increases erosive power of a river and is a result of a positive movement in the base level of erosion.

3. The Nile, Ganges and Mekong have the bird’s foot delta

Codes:

Discussion

11985.	The electrolytic decomposition of water gives H2 and O2 in the ratio of (A)1 : 2 by volume (B)2 : 1 by volume (C) 8 : 1 by mass (D)1 : 2 by mass
Answer» The electrolytic decomposition of water gives H2 and O2 in the ratio of (A)1 : 2 by volume (B)2 : 1 by volume (C) 8 : 1 by mass (D)1 : 2 by mass

Discussion

11986.	(a) Write the IUPAC name and common name of CH3Cl. (b) Draw the structure of chlorobutane. (c) Draw the structure for bromopentane. Are structural isomers possible for bromopentane?
Answer» (a) Write the IUPAC name and common name of $C H_{3} C l$ . (b) Draw the structure of chlorobutane. (c) Draw the structure for bromopentane. Are structural isomers possible for bromopentane?

Discussion

11987.	Terrestrial hydrogen contains deuterium mostly in the form of:
Answer» Terrestrial hydrogen contains deuterium mostly in the form of:

Discussion

11988.	The compounds with same molecular formula but different structural formula are known as:
Answer» The compounds with same molecular formula but different structural formula are known as:

Discussion

11989.	Complete the following equations: C2H5OH Conc. H2SO4−−−−−−−→ + H2O
Answer» Complete the following equations: $C_{2} H_{5} OH Conc . H_{2} {SO}_{4} - ------ \to$ + $H_{2} O$

Discussion

11990.	Question 1 What is the common name of the compound CaOCl2?
Answer» Question 1 What is the common name of the compound ${CaOCl}_{2}$ ?

Discussion

11991.	Question 47. A sulphate salt of group 2 element of the periodic table is a white, soft substance, which can be moulded into different shapes by making its dough. When this compound is left in the open for some time, it becomes a solid mass and cannot be used for moulding purposes. Identify the sulphate salt and why does it show such a behaviour ? Write down the reaction involved.
Answer» Question 47. A sulphate salt of group 2 element of the periodic table is a white, soft substance, which can be moulded into different shapes by making its dough. When this compound is left in the open for some time, it becomes a solid mass and cannot be used for moulding purposes. Identify the sulphate salt and why does it show such a behaviour ? Write down the reaction involved.

Discussion

11992.	The process of obtaining the pure metal from the impure metal is called ___.
Answer» The process of obtaining the pure metal from the impure metal is called ___.

Discussion

11993.	A hydrocarbon with 5 carbons and a double bond between the 2nd and the 3rd carbons, can be named as ___.
Answer» A hydrocarbon with 5 carbons and a double bond between the $2^{n d}$ and the $3^{r d}$ carbons, can be named as ___.

Discussion

11994.	Why metals are good conductors of electricity wherese glass is a bad conductor of electricity?
Answer» Why metals are good conductors of electricity wherese glass is a bad conductor of electricity?

Discussion

11995.	You might have observed in CO2 molecule, that there are two pairs of valence electrons on each of the oxygen atoms that are not bonded. Such a pair of electrons is called a lone pair. Now how many lone pairs are present is S8 molecule?
Answer» You might have observed in $C O_{2}$ molecule, that there are two pairs of valence electrons on each of the oxygen atoms that are not bonded. Such a pair of electrons is called a lone pair. Now how many lone pairs are present is $S_{8}$ molecule?

Discussion

11996.	The compounds obtained on heating baking soda are:
Answer» The compounds obtained on heating baking soda are:

Discussion

11997.	Which of the following statement(s) is/are not applicable to carbon compounds?
Answer» Which of the following statement(s) is/are not applicable to carbon compounds?

Discussion

11998.	A method used to concentrate the ore of lead. Name the process.
Answer» A method used to concentrate the ore of lead. Name the process.

Discussion

11999.	Calculate the volume occupied by 3.5 g. of O2 gas at 27°C & 740 mm. press. [O = 16]
Answer» Calculate the volume occupied by 3.5 g. of O₂ gas at 27°C & 740 mm. press. [O = 16]

Discussion

12000.	Bases when dissolved in water produce:
Answer» Bases when dissolved in water produce:

Discussion

Explore topic-wise InterviewSolutions in .

An organism's specific role in its habitat is called ___ .

When food containing fat or oil is not used and left for long time,their smell and taste changes.Name the process which is responsible for the change.List two methods to prevent or slow down the above change

Question 12 Which of the following gives the correct increasing order of the atomic radii of O, F and N? (a) O, F, N (b) N, F, O (c) O, N, F (d) F, O, N

Carbon compounds can be easily is __ using suitable oxidizing agent like alkaline potassium permanganate to form carboxylic acids.

Unsustainable harvesting of resources and species is ___.

The pH of a solution in which the [H+] = 0.01, is

(a) On which factors does purification of metals depend? (b) Name the methods used for purification. (c) How is electro-refining done?

When a mixture of iron powder and sulphur powder is heated strongly to form iron sulphide, then heat energy is : (a) released (b) first absorbed and then released (c) absorbed (d) neither absorbed nor released

Question 05. Sodium carbonate is a basic salt because it is a salt of (a) strong acid and strong base (b) weak acid and weak base (c) strong acid and weak base (d) weak acid and strong base

Which of the following gaseous samples contain the same number of moles at STP?

Pb(NO3)2(aq)+2KCl(aq)→2KNO3(aq)+PbCl2(s) When lead nitrate solution is mixed with potassium chloride solution, a precipitate of lead chloride and solution of potassium nitrate are formed. This type of reaction is called _________________.

The total number of shared electrons in the lewis dot structure of a O2 molecule is:4

Give an example of a four-step food chain operating in grassland. Name the secondary consumer in this food chain

Mond’s Process involves

Percentage composition of hydrogen in benzene is _____.

How to prevent rusting? [3 MARKS]

Is NH3 + HCl ------&gt; NH4Cl an exothermic or endothermic reaction?

Why carbon and its compounds are used as fuels for most applications?

What is formic acid basically?

In a solution of lead acetate, a strip of metal M was dipped. After some time, lead from the solution was deposited on the metal strip. Which metal is more reactive, M or lead?

What is really an acid?

What are the factors that affect the solubility of solid in liquid?

Calculate the number of atoms in each of the following : (a) 52 moles of He, (b) 52 Amu of He, (c) 52 g Of He.

What is the Atomic Mass of Cu?

Silver and gold occur in the free state in nature state reason for the following ?

Name: (a) The compound formed when acetic acid and ethanol react together (b) The reducing agent used to convert acetic acid to ethanol. (c) The substance used to change acetic acid to acetic anhydride. [3 MARKS]

Does suffix of functional groups of oxygen work for methane also?

Study the figure given below and name the gas which is responsible for the formation of effervescence.

In the electrorefining process, the weight of ___ gets reduced.

1 amu or 1 u is defined as

Match the following: Column 1Column 2(p)Scrubber(i)1000 volts electrodes(q)Catalytic converter(ii)flue gas column(r)Electrostatic precipitator(iii)redox reactions

What volume of oxygen would be required for the complete combustion of 100 litres of ethane? The following equation is as follows: 2C2H6+7O2→4CO2+6H2O

What is Y in the reaction given below? CH3−CH2OHAlkaline KMnO4+Heat−−−−−−−−−−−−−−−−−→or acidified K2Cr2O7+Heat Y

The electrolytic decomposition of water gives H2 and O2 in the ratio of (A)1 : 2 by volume (B)2 : 1 by volume (C) 8 : 1 by mass (D)1 : 2 by mass

(a) Write the IUPAC name and common name of CH3Cl. (b) Draw the structure of chlorobutane. (c) Draw the structure for bromopentane. Are structural isomers possible for bromopentane?

Terrestrial hydrogen contains deuterium mostly in the form of:

The compounds with same molecular formula but different structural formula are known as:

Complete the following equations: C2H5OH Conc. H2SO4−−−−−−−→ + H2O

Question 1 What is the common name of the compound CaOCl2?

The process of obtaining the pure metal from the impure metal is called ___.

A hydrocarbon with 5 carbons and a double bond between the 2nd and the 3rd carbons, can be named as ___.

Why metals are good conductors of electricity wherese glass is a bad conductor of electricity?

You might have observed in CO2 molecule, that there are two pairs of valence electrons on each of the oxygen atoms that are not bonded. Such a pair of electrons is called a lone pair. Now how many lone pairs are present is S8 molecule?

The compounds obtained on heating baking soda are:

Which of the following statement(s) is/are not applicable to carbon compounds?

A method used to concentrate the ore of lead. Name the process.

Calculate the volume occupied by 3.5 g. of O​​​​​​2 gas at 27°C & 740 mm. press. [O = 16]

Bases when dissolved in water produce:

Is NH3 + HCl ------> NH4Cl an exothermic or endothermic reaction?

Calculate the volume occupied by 3.5 g. of O2 gas at 27°C & 740 mm. press. [O = 16]