46295 + Interview Questions in Chemistry

1.	At 700 K, the equilibrium constant Kp, for the reaction 2SO3(g)⇌2SO2(g)+O2(g) is 1.8×10−3kPa. What is the numerical value of KC for this reaction at the same temperature? R=0.0821 L atm mol−1 K−1
Answer» At 700 K, the equilibrium constant $K_{p},$ for the reaction $2 S O_{3} (g) ⇌ 2 S O_{2} (g) + O_{2} (g)$ is $1.8 \times 10^{- 3} k P a .$ What is the numerical value of $K_{C}$ for this reaction at the same temperature? $R = 0.0821 L a t m m o l^{- 1} K^{- 1}$

Discussion

2.	how does dilution affect conduc†an ce,conductivity and molar conduc†an ce of a solution
Answer» how does dilution affect conduc†an ce,conductivity and molar conduc†an ce of a solution

Discussion

3.	Retrouvez les mots cachés :
Answer» Retrouvez les mots cachés :

Discussion

4.	Is NH4CN strong or weak salt?
Answer» Is NH4CN strong or weak salt?

Discussion

5.	Presence of disulphide bond in an antibody molecule is a function of which amino acid? Explain.
Answer» Presence of disulphide bond in an antibody molecule is a function of which amino acid? Explain.

Discussion

6.	in duams method for determining the n content of an organic compound the n content is determine in the form of 1] gassous nh3 2] nacn 3] gassous n2 3] [nh4]2so4
Answer» in duams method for determining the n content of an organic compound the n content is determine in the form of 1] gassous nh3 2] nacn 3] gassous n2 3] [nh4]2so4

Discussion

7.	From Sc to Zn in 3d series the highest value of enthalpy of atomisation is for 1 Cr 2 V 3 Fe 4 Ni
Answer» From Sc to Zn in 3d series the highest value of enthalpy of atomisation is for 1 Cr 2 V 3 Fe 4 Ni

Discussion

8.	which factors increasre reactivity towards electrophilic substitution reaction does resonance and conjugation also increse its rate towards ESR taking the cases of pyridine,pyrole and benzene
Answer» which factors increasre reactivity towards electrophilic substitution reaction does resonance and conjugation also increse its rate towards ESR taking the cases of pyridine,pyrole and benzene

Discussion

9.	The slag obtained during the extraction of copper from copper pyrites is composed mainly of
Answer» The slag obtained during the extraction of copper from copper pyrites is composed mainly of

Discussion

10.	20. Acetic acid dimerises to an extent of 30% in benzene. The observed molecular mass is
Answer» 20. Acetic acid dimerises to an extent of 30% in benzene. The observed molecular mass is

Discussion

11.	What is the basic need of mole concept??
Answer» What is the basic need of mole concept??

Discussion

12.	Which of the following is more concentrated in each pair?1- 0.500M KCl 0.500W% KCl in water 2- 1.75M glucose or 1.75m glucose in water
Answer» Which of the following is more concentrated in each pair? 1- 0.500M KCl 0.500W% KCl in water 2- 1.75M glucose or 1.75m glucose in water

Discussion

13.	Estimate the average mass density of asodium atom assuming its size to be about 2.5.(Use the known values of Avogadro’s number and the atomic massof sodium). Compare it with the density of sodium in its crystallinephase: 970 kg m–3. Are the two densities of the sameorder of magnitude? If so, why?
Answer» Estimate the average mass density of a sodium atom assuming its size to be about 2.5. (Use the known values of Avogadro’s number and the atomic mass of sodium). Compare it with the density of sodium in its crystalline phase: 970 kg m^–3. Are the two densities of the same order of magnitude? If so, why?

Discussion

14.	Thevapour pressure of pure liquids A and B are 450 and 700 mm Hgrespectively, at 350 K. Find out the composition of the liquidmixture if total vapour pressure is 600 mm Hg. Also find thecomposition of the vapour phase.
Answer» The vapour pressure of pure liquids A and B are 450 and 700 mm Hg respectively, at 350 K. Find out the composition of the liquid mixture if total vapour pressure is 600 mm Hg. Also find the composition of the vapour phase.

Discussion

15.	Ozone reacts with nitric oxide to form:
Answer» Ozone reacts with nitric oxide to form:

Discussion

16.	Question 32Which of the following are not compounds? (a) Chlorine gas (b) Potassium chloride (c) Iron (d) Iron sulphide (e) Aluminium (f) Iodine (g) Carbon (h) Carbon monoxide (i) Sulphur powder
Answer» Question 32 Which of the following are not compounds? (a) Chlorine gas (b) Potassium chloride (c) Iron (d) Iron sulphide (e) Aluminium (f) Iodine (g) Carbon (h) Carbon monoxide (i) Sulphur powder

Discussion

17.	22.Which of the following is not applicable to the phenomenon of adsorption ? A)♢H>0 B)♢S
Answer» 22.Which of the following is not applicable to the phenomenon of adsorption ? A)♢H>0 B)♢S<0 C)♢G<0 D)♢H<0

Discussion

18.	The absolute configurations of the two centers in the following molecule are :
Answer» The absolute configurations of the two centers in the following molecule are :

Discussion

19.	The major product formed in the following reaction CH3CH(Cl)CH2−CH2OHaq.KOH−−−−−→
Answer» The major product formed in the following reaction $C H_{3} C H (C l) C H_{2} - C H_{2} O H a q . K O H - ---- \to$

19.

The major product formed in the following reaction CH3CH(Cl)CH2−CH2OHaq.KOH−−−−−→

Answer»

The major product formed in the following reaction

$C H_{3} C H (C l) C H_{2} - C H_{2} O H a q . K O H - ---- \to$

Discussion

20.	In the following questions two Statement - 1 (Assertion) and Statement - 2 (Reason) are provided. Each question has 4 choices (a), (b), (c) and (d) for its answer, out of which ONLY ONE is correct. Mark your responses from the following options: Statement - 1 : Electromagnetic radiation will be emitted for the transition 2Pz→2px. Statement - 2 : No transition of electron takes place between 2Pz and 2Px orbitals.
Answer» In the following questions two Statement - 1 (Assertion) and Statement - 2 (Reason) are provided. Each question has 4 choices (a), (b), (c) and (d) for its answer, out of which ONLY ONE is correct. Mark your responses from the following options: Statement - 1 : Electromagnetic radiation will be emitted for the transition $2 P_{z} \to 2 p_{x}$ . Statement - 2 : No transition of electron takes place between $2 P_{z}$ and $2 P_{x}$ orbitals.

20.

In the following questions two Statement - 1 (Assertion) and Statement - 2 (Reason) are provided. Each question has 4 choices (a), (b), (c) and (d) for its answer, out of which ONLY ONE is correct. Mark your responses from the following options: Statement - 1 : Electromagnetic radiation will be emitted for the transition 2Pz→2px. Statement - 2 : No transition of electron takes place between 2Pz and 2Px orbitals.

Answer»

In the following questions two Statement - 1 (Assertion) and Statement - 2 (Reason) are provided. Each question has 4 choices (a), (b), (c) and (d) for its answer, out of which ONLY ONE is correct. Mark your responses from the following options:

Statement - 1 : Electromagnetic radiation will be emitted for the transition $2 P_{z} \to 2 p_{x}$ .

Statement - 2 : No transition of electron takes place between $2 P_{z}$ and $2 P_{x}$ orbitals.

Discussion

21.	Metallic gold crystallises in a face centered cubic lattice of edge length 4.070 oA. The closest distance between the gold atoms is:
Answer» Metallic gold crystallises in a face centered cubic lattice of edge length $4.070 o A$ . The closest distance between the gold atoms is:

Discussion

22.	Catechol+NaOH+CH2Cl2=??
Answer» Catechol+NaOH+CH2Cl2=??

Discussion

23.	When we convert gas into liquid DOES WE FOLLOW GAYLUSSAC LAW
Answer» When we convert gas into liquid DOES WE FOLLOW GAYLUSSAC LAW

Discussion

24.	The ratio of number of moles of KMnO4and K2r207 required to oxidise 0.1 mol Sn2+ to Sn+4 in acidic medium
Answer» The ratio of number of moles of KMnO4and K2r207 required to oxidise 0.1 mol Sn2+ to Sn+4 in acidic medium

Discussion

25.	why the boiling point of chlorides of carbon family decreases down the group,metallic character increases down the group,so ionic character increases as halide is a non metal ,on the other hand we know that ioinic compounds have more boiling and melting point than covalent comound,why that rule is not applied here
Answer» why the boiling point of chlorides of carbon family decreases down the group,metallic character increases down the group,so ionic character increases as halide is a non metal ,on the other hand we know that ioinic compounds have more boiling and melting point than covalent comound,why that rule is not applied here

Discussion

26.	32. For (CrCl3.xNH3),elevation in boiling point of one molal solution is triple of one molal aqueous solution of urea. Assuming 100percent ionisation of complex molecule and coordination number as six, calculate the value of x
Answer» 32. For (CrCl3.xNH3),elevation in boiling point of one molal solution is triple of one molal aqueous solution of urea. Assuming 100percent ionisation of complex molecule and coordination number as six, calculate the value of x

Discussion

27.	Which of the following is a fuming red-brown liquid at room temperature?
Answer» Which of the following is a fuming red-brown liquid at room temperature?

Discussion

28.	Rank the following compounds in order of decreasing acidic strength :
Answer» Rank the following compounds in order of decreasing acidic strength :

Discussion

29.	39.Which of the following does not show optical activity? EXPLAIN 1.[Co(NH3)4Cl2] 2.[Cr(ox)]3- 3.[Co(ox)2(NH3)2]Cl 4.[Co(en)(NH3)2(H2O)2]Cl2
Answer» 39.Which of the following does not show optical activity? EXPLAIN 1.[Co(NH3)4Cl2] 2.[Cr(ox)]3- 3.[Co(ox)2(NH3)2]Cl 4.[Co(en)(NH3)2(H2O)2]Cl2

Discussion

30.	Whatwill be the conjugate bases for the Brönsted acids: HF, H2SO4and HCO3?
Answer» What will be the conjugate bases for the Brönsted acids: HF, H₂SO₄ and HCO₃?

Discussion

31.	which of the following will not be soluble in sodium hydrogen carbonate? a)2,4,6-trinitrophenol b)benzoic acid c)o_nitrophenol d)benzenesulphonic ac dd oo
Answer» which of the following will not be soluble in sodium hydrogen carbonate? a)2,4,6-trinitrophenol b)benzoic acid c)o_nitrophenol d)benzenesulphonic ac dd oo

Discussion

32.	atoms with electronegativity higher than hydrogen
Answer» atoms with electronegativity higher than hydrogen

Discussion

33.	Polarization is an important phenomenon which is helpful in determination of covalent nature of compound. With the help of Fajan's rule one can easily predict the nature of compound. Which of the following possess the least covalent character?
Answer» Polarization is an important phenomenon which is helpful in determination of covalent nature of compound. With the help of Fajan's rule one can easily predict the nature of compound. Which of the following possess the least covalent character?

Discussion

34.	What is a momentum?
Answer» What is a momentum?

Discussion

35.	34. Why silver cannot evolve H2 gas in dilute acid
Answer» 34. Why silver cannot evolve H2 gas in dilute acid

Discussion

36.	For a hypothetical reaction,4A+5B⇌4P+6Q the equilibrium constant Kc has units
Answer» For a hypothetical reaction, $4 A + 5 B ⇌ 4 P + 6 Q$ the equilibrium constant $K_{c}$ has units

Discussion

37.	For the reaction PCl3,(g) + Cl2(g) gives PCl5(g), at 250C,value of Kcis 26, then the value of Kp at same temperature will be (1) 0.61 (3) 0.92 (2) 0.47 0.26
Answer» For the reaction PCl3,(g) + Cl2(g) gives PCl5(g), at 250C,value of Kcis 26, then the value of Kp at same temperature will be (1) 0.61 (3) 0.92 (2) 0.47 0.26

Discussion

38.	why does water don't show reducing property as compared to the other hydrides of group 16?
Answer» why does water don't show reducing property as compared to the other hydrides of group 16?

Discussion

39.	How many unit cells are present in a cube shaped ideal crystal of NaCl of mass 1 g??
Answer» How many unit cells are present in a cube shaped ideal crystal of NaCl of mass 1 g??

Discussion

40.	Q 63/200 Major product in the following reactionCF3CI NaNH2liq NHa
Answer» Q 63/200 Major product in the following reactionCF3CI NaNH2liq NHa

Discussion

41.	Give the relationship between density and edge length of a cubic crystal
Answer» Give the relationship between density and edge length of a cubic crystal

Discussion

42.	if an electron is revolving around the hydrogen nucleus at a dis†an ce of 0.1nm,what should be its speed
Answer» if an electron is revolving around the hydrogen nucleus at a dis†an ce of 0.1nm,what should be its speed

Discussion

43.	State the differences between Henry's law and Raoult's law.
Answer» State the differences between Henry's law and Raoult's law.

Discussion

44.	Which of the following atoms has the highest first ionization energy ?
Answer» Which of the following atoms has the highest first ionization energy ?

Discussion

45.	Which of the following represent the crystal field splitting of tetrahdral complex?
Answer» Which of the following represent the crystal field splitting of tetrahdral complex?

Discussion

46.	The dissociation constants for acetic acid and HCN at 25°C are 1.5×10−5 and 4.5×10−10 respectively. The equilibrium constant for the equilibrium,CN−+CH3COOH⇌HCN+CH3COO− would be:
Answer» The dissociation constants for acetic acid and $H C N$ at $25 ° C$ are $1.5 \times 10^{- 5}$ and $4.5 \times 10^{- 10}$ respectively. The equilibrium constant for the equilibrium, $C N^{-} + C H_{3} C O O H ⇌ H C N + C H_{3} C O O^{-}$ would be:

Discussion

47.	The ionization constant of nitrous acid is 4.5×10−4. Calculate the pH of 0.04 M sodium nitrite solution and also its degree of hydrolysis.
Answer» The ionization constant of nitrous acid is $4.5 \times 10^{- 4}$ . Calculate the pH of 0.04 M sodium nitrite solution and also its degree of hydrolysis.

Discussion

48.	find out the number of atoms per unit cell in a face centred cubic structure having only single atom at its lattice points
Answer» find out the number of atoms per unit cell in a face centred cubic structure having only single atom at its lattice points

Discussion

49.	What happens to fringe pattern when YDSE is performed in water instead of air?
Answer» What happens to fringe pattern when YDSE is performed in water instead of air?

Discussion

50.	What is the hybridization of every element in HNO2?
Answer» What is the hybridization of every element in HNO2?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

At 700 K, the equilibrium constant Kp, for the reaction 2SO3(g)⇌2SO2(g)+O2(g) is 1.8×10−3kPa. What is the numerical value of KC for this reaction at the same temperature? R=0.0821 L atm mol−1 K−1

how does dilution affect conduc†an ce,conductivity and molar conduc†an ce of a solution

Retrouvez les mots cachés :

Is NH4CN strong or weak salt?

Presence of disulphide bond in an antibody molecule is a function of which amino acid? Explain.

in duams method for determining the n content of an organic compound the n content is determine in the form of 1] gassous nh3 2] nacn 3] gassous n2 3] [nh4]2so4

From Sc to Zn in 3d series the highest value of enthalpy of atomisation is for 1 Cr 2 V 3 Fe 4 Ni

which factors increasre reactivity towards electrophilic substitution reaction does resonance and conjugation also increse its rate towards ESR taking the cases of pyridine,pyrole and benzene

The slag obtained during the extraction of copper from copper pyrites is composed mainly of

20. Acetic acid dimerises to an extent of 30% in benzene. The observed molecular mass is

What is the basic need of mole concept??

Which of the following is more concentrated in each pair?1- 0.500M KCl 0.500W% KCl in water 2- 1.75M glucose or 1.75m glucose in water

Thevapour pressure of pure liquids A and B are 450 and 700 mm Hgrespectively, at 350 K. Find out the composition of the liquidmixture if total vapour pressure is 600 mm Hg. Also find thecomposition of the vapour phase.

Ozone reacts with nitric oxide to form:

Question 32Which of the following are not compounds? (a) Chlorine gas (b) Potassium chloride (c) Iron (d) Iron sulphide (e) Aluminium (f) Iodine (g) Carbon (h) Carbon monoxide (i) Sulphur powder

22.Which of the following is not applicable to the phenomenon of adsorption ? A)♢H>0 B)♢S

The absolute configurations of the two centers in the following molecule are :

The major product formed in the following reaction CH3CH(Cl)CH2−CH2OHaq.KOH−−−−−→

Metallic gold crystallises in a face centered cubic lattice of edge length 4.070 oA. The closest distance between the gold atoms is:

Catechol+NaOH+CH2Cl2=??

When we convert gas into liquid DOES WE FOLLOW GAYLUSSAC LAW

The ratio of number of moles of KMnO4and K2r207 required to oxidise 0.1 mol Sn2+ to Sn+4 in acidic medium

32. For (CrCl3.xNH3),elevation in boiling point of one molal solution is triple of one molal aqueous solution of urea. Assuming 100percent ionisation of complex molecule and coordination number as six, calculate the value of x

Which of the following is a fuming red-brown liquid at room temperature?

Rank the following compounds in order of decreasing acidic strength :

39.Which of the following does not show optical activity? EXPLAIN 1.[Co(NH3)4Cl2] 2.[Cr(ox)]3- 3.[Co(ox)2(NH3)2]Cl 4.[Co(en)(NH3)2(H2O)2]Cl2

Whatwill be the conjugate bases for the Brönsted acids: HF, H2SO4and HCO3?

which of the following will not be soluble in sodium hydrogen carbonate? a)2,4,6-trinitrophenol b)benzoic acid c)o_nitrophenol d)benzenesulphonic ac dd oo

atoms with electronegativity higher than hydrogen

Polarization is an important phenomenon which is helpful in determination of covalent nature of compound. With the help of Fajan's rule one can easily predict the nature of compound. Which of the following possess the least covalent character?

What is a momentum?

34. Why silver cannot evolve H2 gas in dilute acid

For a hypothetical reaction,4A+5B⇌4P+6Q the equilibrium constant Kc has units

For the reaction PCl3,(g) + Cl2(g) gives PCl5(g), at 250C,value of Kcis 26, then the value of Kp at same temperature will be (1) 0.61 (3) 0.92 (2) 0.47 0.26

why does water don't show reducing property as compared to the other hydrides of group 16?

How many unit cells are present in a cube shaped ideal crystal of NaCl of mass 1 g??

Q 63/200 Major product in the following reactionCF3CI NaNH2liq NHa

Give the relationship between density and edge length of a cubic crystal

if an electron is revolving around the hydrogen nucleus at a dis†an ce of 0.1nm,what should be its speed

State the differences between Henry's law and Raoult's law.

Which of the following atoms has the highest first ionization energy ?

Which of the following represent the crystal field splitting of tetrahdral complex?

The dissociation constants for acetic acid and HCN at 25°C are 1.5×10−5 and 4.5×10−10 respectively. The equilibrium constant for the equilibrium,CN−+CH3COOH⇌HCN+CH3COO− would be:

The ionization constant of nitrous acid is 4.5×10−4. Calculate the pH of 0.04 M sodium nitrite solution and also its degree of hydrolysis.

find out the number of atoms per unit cell in a face centred cubic structure having only single atom at its lattice points

What happens to fringe pattern when YDSE is performed in water instead of air?

What is the hybridization of every element in HNO2?