10223 + Interview Questions in Chemistry Page 55 InterviewSolution

2701.	Name the process you would use to separate a mixture of anthracene and copper sulphate ?
Answer» Name the process you would use to separate a mixture of anthracene and copper sulphate ?

Discussion

2702.	If 12g of carbon burns in 40g oxygen in a closed container, the product has a) 44g of carbon dioxideb) 8g of oxygen c) 32g of oxygen d) 52g of carbon dioxide
Answer» If 12g of carbon burns in 40g oxygen in a closed container, the product has a) 44g of carbon dioxide b) 8g of oxygen c) 32g of oxygen d) 52g of carbon dioxide

Discussion

2703.	A molecule M associates in a given solvent according to the equation M=(M)n. For a certain concentration of M ,the von't hoff factor was found to be 0.9 and the fraction of associated molecules was 0.2 . The value of n is
Answer» A molecule M associates in a given solvent according to the equation M=(M)n. For a certain concentration of M ,the von't hoff factor was found to be 0.9 and the fraction of associated molecules was 0.2 . The value of n is

Discussion

2704.	1. What is meant by combustion reaction
Answer» 1. What is meant by combustion reaction

Discussion

2705.	Which type of solid crystals have both Tetrahedral and octahedral voids and how??
Answer» Which type of solid crystals have both Tetrahedral and octahedral voids and how??

Discussion

2706.	Which of the following is the most important thing for survival of living organisms?
Answer» Which of the following is the most important thing for survival of living organisms?

Discussion

2707.	Which of the following are interstitial carbides?
Answer» Which of the following are interstitial carbides?

Discussion

2708.	The total number of atoms present in 176 g of CO2 is
Answer» The total number of atoms present in 176 g of $C O_{2}$ is

Discussion

2709.	If in diamond,there is a unil cell of carbon atoms as FCC and if carbon atom is sp3 what fraction of voids are occupied by carbon atom
Answer» If in diamond,there is a unil cell of carbon atoms as FCC and if carbon atom is sp3 what fraction of voids are occupied by carbon atom

Discussion

2710.	Which of the following is the correct IUPAC symbol for the element Cobalt?
Answer» Which of the following is the correct IUPAC symbol for the element Cobalt?

Discussion

2711.	Identify the oxidising and reducing agents in the reaction: Zn + CuSO4 → Cu + ZnSO4
Answer» Identify the oxidising and reducing agents in the reaction: Zn + CuSO₄ → Cu + ZnSO₄

2711.

Identify the oxidising and reducing agents in the reaction: Zn + CuSO4 → Cu + ZnSO4

Answer»

Identify the oxidising and reducing agents in the reaction:

Zn + CuSO₄ → Cu + ZnSO₄

Discussion

2712.	In NO, N2O and NO2, the masses of nitrogen which combine with a fixed mass of oxygen bear a simple ratio of 2: 4: 1. This is in accordance with which law?
Answer» In NO, N₂O and NO₂, the masses of nitrogen which combine with a fixed mass of oxygen bear a simple ratio of 2: 4: 1. This is in accordance with which law?

Discussion

2713.	MgO + HCl →__________.
Answer» $M g O + H C l \to$ __________.

Discussion

2714.	in which of the following acetylene is the major product?Why?? 1.\lbrack CHI3\rbrack2\xrightarrow[△]{Ag} 2.CH3-CH2-Br\xrightarrow[{KOH}]{alc} 3.BrCH2-CH2Br\xrightarrow[△]{Zn} 4.all
Answer» in which of the following acetylene is the major product?Why?? 1.\lbrack CHI3\rbrack2\xrightarrow[△]{Ag} 2.CH3-CH2-Br\xrightarrow[{KOH}]{alc} 3.BrCH2-CH2Br\xrightarrow[△]{Zn} 4.all

Discussion

2715.	Which of them are not monobasic acid?
Answer» Which of them are not monobasic acid?

Discussion

2716.	Which contains more heat, 1 kg of ice at 0 C or 1 kg of water at 0 C? Give reason for your answer.
Answer» Which contains more heat, 1 kg of ice at 0 C or 1 kg of water at 0 C? Give reason for your answer.

Discussion

2717.	Acidity of diprotic acids in aqueous solutions increases in the order
Answer» Acidity of diprotic acids in aqueous solutions increases in the order

Discussion

2718.	The ratio of magnitude of energies of electron in first and second excited states of hydrogen atom is:
Answer» The ratio of magnitude of energies of electron in first and second excited states of hydrogen atom is:

Discussion

2719.	Range of f(x)=x{x}-x[-x] does not contain
Answer» Range of f(x)=x{x}-x[-x] does not contain

Discussion

2720.	Which of the following is a 1o amine?
Answer» Which of the following is a $1^{o}$ amine?

Discussion

2721.	how many monochlorinated products are possible for neo pentane??
Answer» how many monochlorinated products are possible for neo pentane??

Discussion

2722.	6. What mass of hydrochloric acid is needed to decompose 50g of limestone?
Answer» 6. What mass of hydrochloric acid is needed to decompose 50g of limestone?

Discussion

2723.	An alkali metal A gives a compound B (molecular mass = 40) on reacting with water. The compound B gives a soluble compound C on treatment with aluminium oxide. Identify A, B and C and give the reaction involved.
Answer» An alkali metal A gives a compound B (molecular mass = 40) on reacting with water. The compound B gives a soluble compound C on treatment with aluminium oxide. Identify A, B and C and give the reaction involved.

Discussion

2724.	Question 1What is ozone and how does it affect any ecosystem?
Answer» Question 1 What is ozone and how does it affect any ecosystem?

Discussion

2725.	Arrange the given list of acids and bases in ascending order of their pH.Water, limewater, vinegar, gastric juices
Answer» Arrange the given list of acids and bases in ascending order of their pH. Water, limewater, vinegar, gastric juices

Discussion

2726.	The absolute configuration of the compound
Answer» The absolute configuration of the compound

Discussion

2727.	Dalton said that all atoms of an element are alike. Which of the following Dalton's theory has been proved right?
Answer» Dalton said that all atoms of an element are alike. Which of the following Dalton's theory has been proved right?

Discussion

2728.	Which of the following will show Tyndall effect ? Why ? (a) Salt solution (b) Starch solution (c) Milk (d) Copper sulphate solution
Answer» Which of the following will show Tyndall effect ? Why ? (a) Salt solution (b) Starch solution (c) Milk (d) Copper sulphate solution

2728.

Which of the following will show Tyndall effect ? Why ? (a) Salt solution (b) Starch solution (c) Milk (d) Copper sulphate solution

Answer»

Which of the following will show Tyndall effect ? Why ?

(a) Salt solution (b) Starch solution

(c) Milk (d) Copper sulphate solution

Discussion

2729.	What is the balanced form of the equation written below? Cu + H2SO4 → CuSO4 + SO2 + H2O
Answer» What is the balanced form of the equation written below? $C u + H_{2} S O_{4} \to C u S O_{4} + S O_{2} + H_{2} O$

2729.

What is the balanced form of the equation written below? Cu + H2SO4 → CuSO4 + SO2 + H2O

Answer»

What is the balanced form of the equation written below?

$C u + H_{2} S O_{4} \to C u S O_{4} + S O_{2} + H_{2} O$

Discussion

2730.	how to find the minimum speed of projectile during its motion??
Answer» how to find the minimum speed of projectile during its motion??

Discussion

2731.	calculate the mass of one mole of electrons
Answer» calculate the mass of one mole of electrons

Discussion

2732.	One of the following is an essential amino acid.
Answer» One of the following is an essential amino acid.

Discussion

2733.	In which of the following properties listed below of hydrogen does not show similarity with halogens? (i)Nature of the oxide (ii)Electropositive character (iii)Combination with alkali (iv)Atomicity
Answer» In which of the following properties listed below of hydrogen does not show similarity with halogens? (i)Nature of the oxide (ii)Electropositive character (iii)Combination with alkali (iv)Atomicity

2733.

In which of the following properties listed below of hydrogen does not show similarity with halogens? (i)Nature of the oxide (ii)Electropositive character (iii)Combination with alkali (iv)Atomicity

Answer»

In which of the following properties listed below of hydrogen does not show similarity with halogens?

(i)Nature of the oxide

(ii)Electropositive character

(iii)Combination with alkali

(iv)Atomicity

Discussion

2734.	Sorry previous question was asked by mistake this is the question what is ionisation enthalpy
Answer» Sorry previous question was asked by mistake this is the question what is ionisation enthalpy

Discussion

2735.	12.53 ml of 0.051 M SeO2 reacted with 25.52 ml of 0.1M CrSO4 solution. In the reaction Cr+2 was oxidised to Cr+3 . The oxidation state at which selenium was converted is
Answer» 12.53 ml of 0.051 M SeO2 reacted with 25.52 ml of 0.1M CrSO4 solution. In the reaction Cr+2 was oxidised to Cr+3 . The oxidation state at which selenium was converted is

Discussion

2736.	Ammonia is a major component of :
Answer» Ammonia is a major component of :

Discussion

2737.	how to find valency of elements ?
Answer» how to find valency of elements ?

Discussion

2738.	the molality of 19.6 percent (w/w )H2SO4 aqueous solution
Answer» the molality of 19.6 percent (w/w )H2SO4 aqueous solution

Discussion

2739.	Which of the following compounds is consumed during the preparation of Na3CO3 by solvey's process?
Answer» Which of the following compounds is consumed during the preparation of $N a_{3} C O_{3}$ by solvey's process?

Discussion

2740.	H+ ion comes from the ionization of which of these?
Answer» $H^{+}$ ion comes from the ionization of which of these?

Discussion

2741.	19.Section A q.no. 13 thermodynamics The standard entropies of n2(g) h2(g) and nh3(g) are 191.5,130.5,192.6 joule per kilo per mole. The value of delta snot of formation of ammonia is 1 -98.9 j/k/mol 2 zero 3 +129.4 j/k/mol 4 -29.4 j/k/mol
Answer» 19.Section A q.no. 13 thermodynamics The standard entropies of n2(g) h2(g) and nh3(g) are 191.5,130.5,192.6 joule per kilo per mole. The value of delta snot of formation of ammonia is 1 -98.9 j/k/mol 2 zero 3 +129.4 j/k/mol 4 -29.4 j/k/mol

Discussion

2742.	What will be the cumulative number of standard axle load (in msa) needed for the design of pavement as per IRC for the given data?Commercial vehicles per week=1265Design life of pavement=10 yearsGrowth rate of vehicles=5% per yearVehicles damage factor = 1.2(Construction of the pavement is expected to be over after 2years of last count?1.09
Answer» What will be the cumulative number of standard axle load (in msa) needed for the design of pavement as per IRC for the given data? Commercial vehicles per week=1265 Design life of pavement=10 years Growth rate of vehicles=5% per year Vehicles damage factor = 1.2 (Construction of the pavement is expected to be over after 2years of last count? 1.09

Discussion

2743.	electronic energy of hydrogen atom depends on the quantum number
Answer» electronic energy of hydrogen atom depends on the quantum number

Discussion

2744.	Why different colours of soaps when washed gives out only white foam?
Answer» Why different colours of soaps when washed gives out only white foam?

Discussion

2745.	Water softening by Clark’s process uses
Answer» Water softening by Clark’s process uses

Discussion

2746.	18. An aqueous solution contains 0.10 M H 2S and 0.20 M HCl. If the equilibrium constants for theformation of HS from H2S is 1.0 107 and thatof S2 from HS ions is 1.21013 then theconcentration of S2 ions in aqueous solutionis : (1) 31020 (2) 61021 (3) 51019 (4) 5108
Answer» 18. An aqueous solution contains 0.10 M H 2S and 0.20 M HCl. If the equilibrium constants for theformation of HS from H2S is 1.0 107 and thatof S2 from HS ions is 1.21013 then theconcentration of S2 ions in aqueous solutionis : (1) 31020 (2) 61021 (3) 51019 (4) 5108

Discussion

2747.	(i) What is the nucleus of an atom and what is the nature of charge on it?(ii) Name the scientist who discovered the nucleus of atom.
Answer» (i) What is the nucleus of an atom and what is the nature of charge on it? (ii) Name the scientist who discovered the nucleus of atom.

Discussion

2748.	What amount of dioxygen (in gram) contains 1.8×1022 molecules?
Answer» What amount of dioxygen (in gram) contains $1.8 \times 10^{22}$ molecules?

Discussion

2749.	Name: (a) A carbonate which does not decompose on heating. (b) A nitrate which produces oxygen as the only gas. (c) A compound which produces carbon dioxide on heating (d) A nitrate which produces brown gas on heating.
Answer» Name: (a) A carbonate which does not decompose on heating. (b) A nitrate which produces oxygen as the only gas. (c) A compound which produces carbon dioxide on heating (d) A nitrate which produces brown gas on heating.

2749.

Name: (a) A carbonate which does not decompose on heating. (b) A nitrate which produces oxygen as the only gas. (c) A compound which produces carbon dioxide on heating (d) A nitrate which produces brown gas on heating.

Answer»

Name:

(a) A carbonate which does not decompose on heating.

(b) A nitrate which produces oxygen as the only gas.

(c) A compound which produces carbon dioxide on heating

(d) A nitrate which produces brown gas on heating.

Discussion

2750.	The atomic number of chlorine is 17. The total number of electrons in chlorine atom is ___.
Answer» The atomic number of chlorine is 17. The total number of electrons in chlorine atom is ___.

Discussion

Explore topic-wise InterviewSolutions in .

Name the process you would use to separate a mixture of anthracene and copper sulphate ?

If 12g of carbon burns in 40g oxygen in a closed container, the product has a) 44g of carbon dioxideb) 8g of oxygen c) 32g of oxygen d) 52g of carbon dioxide

A molecule M associates in a given solvent according to the equation M=(M)n. For a certain concentration of M ,the von't hoff factor was found to be 0.9 and the fraction of associated molecules was 0.2 . The value of n is

1. What is meant by combustion reaction

Which type of solid crystals have both Tetrahedral and octahedral voids and how??

Which of the following is the most important thing for survival of living organisms?

Which of the following are interstitial carbides?

The total number of atoms present in 176 g of CO2 is

If in diamond,there is a unil cell of carbon atoms as FCC and if carbon atom is sp3 what fraction of voids are occupied by carbon atom

Which of the following is the correct IUPAC symbol for the element Cobalt?

Identify the oxidising and reducing agents in the reaction: Zn + CuSO4 → Cu + ZnSO4

In NO, N2O and NO2, the masses of nitrogen which combine with a fixed mass of oxygen bear a simple ratio of 2: 4: 1. This is in accordance with which law?

MgO + HCl →__________.

in which of the following acetylene is the major product?Why?? 1.\lbrack CHI3\rbrack2\xrightarrow[△]{Ag} 2.CH3-CH2-Br\xrightarrow[{KOH}]{alc} 3.BrCH2-CH2Br\xrightarrow[△]{Zn} 4.all

Which of them are not monobasic acid?

Which contains more heat, 1 kg of ice at 0 C or 1 kg of water at 0 C? Give reason for your answer.

Acidity of diprotic acids in aqueous solutions increases in the order

The ratio of magnitude of energies of electron in first and second excited states of hydrogen atom is:

Range of f(x)=x{x}-x[-x] does not contain

Which of the following is a 1o amine?

how many monochlorinated products are possible for neo pentane??

6. What mass of hydrochloric acid is needed to decompose 50g of limestone?

An alkali metal A gives a compound B (molecular mass = 40) on reacting with water. The compound B gives a soluble compound C on treatment with aluminium oxide. Identify A, B and C and give the reaction involved.

Question 1What is ozone and how does it affect any ecosystem?

Arrange the given list of acids and bases in ascending order of their pH.Water, limewater, vinegar, gastric juices

The absolute configuration of the compound

Dalton said that all atoms of an element are alike. Which of the following Dalton's theory has been proved right?

Which of the following will show Tyndall effect ? Why ? (a) Salt solution (b) Starch solution (c) Milk (d) Copper sulphate solution

What is the balanced form of the equation written below? Cu + H2SO4 → CuSO4 + SO2 + H2O

how to find the minimum speed of projectile during its motion??

calculate the mass of one mole of electrons

One of the following is an essential amino acid.

In which of the following properties listed below of hydrogen does not show similarity with halogens? (i)Nature of the oxide (ii)Electropositive character (iii)Combination with alkali (iv)Atomicity

Sorry previous question was asked by mistake this is the question what is ionisation enthalpy

12.53 ml of 0.051 M SeO2 reacted with 25.52 ml of 0.1M CrSO4 solution. In the reaction Cr+2 was oxidised to Cr+3 . The oxidation state at which selenium was converted is

Ammonia is a major component of :

how to find valency of elements ?

the molality of 19.6 percent (w/w )H2SO4 aqueous solution

Which of the following compounds is consumed during the preparation of Na3CO3 by solvey's process?

H+ ion comes from the ionization of which of these?

19.Section A q.no. 13 thermodynamics The standard entropies of n2(g) h2(g) and nh3(g) are 191.5,130.5,192.6 joule per kilo per mole. The value of delta snot of formation of ammonia is 1 -98.9 j/k/mol 2 zero 3 +129.4 j/k/mol 4 -29.4 j/k/mol

electronic energy of hydrogen atom depends on the quantum number

Why different colours of soaps when washed gives out only white foam?

Water softening by Clark’s process uses

18. An aqueous solution contains 0.10 M H 2S and 0.20 M HCl. If the equilibrium constants for theformation of HS from H2S is 1.0 107 and thatof S2 from HS ions is 1.21013 then theconcentration of S2 ions in aqueous solutionis : (1) 31020 (2) 61021 (3) 51019 (4) 5108

(i) What is the nucleus of an atom and what is the nature of charge on it?(ii) Name the scientist who discovered the nucleus of atom.

What amount of dioxygen (in gram) contains 1.8×1022 molecules?

Name: (a) A carbonate which does not decompose on heating. (b) A nitrate which produces oxygen as the only gas. (c) A compound which produces carbon dioxide on heating (d) A nitrate which produces brown gas on heating.

The atomic number of chlorine is 17. The total number of electrons in chlorine atom is ___.