46295 + Interview Questions in Chemistry

1.	If λL1,λL2 and λL3 are wavelengths of 1st,2nd and 3rd lines of Lyman series λB1,λB2 and λB3 are wavelengths of 1st,2nd and 3rd lines of Balmer series while λP1 and λP2 are wavelengths of 1st,2nd lines of Paschen series of hydrogen then which of the following relations is/are correct?
Answer» If $λ_{L 1}, λ_{L 2}$ and $λ_{L 3}$ are wavelengths of $1^{s t}, 2^{n d}$ and $3^{r d}$ lines of Lyman series $λ_{B 1}, λ_{B 2}$ and $λ_{B 3}$ are wavelengths of $1^{s t}, 2^{n d}$ and $3^{r d}$ lines of Balmer series while $λ_{P 1}$ and $λ_{P 2}$ are wavelengths of $1^{s t}, 2^{n d}$ lines of Paschen series of hydrogen then which of the following relations is/are correct?

Discussion

2.	Which of the following compound(s) exhibit optical isomerism?
Answer» Which of the following compound(s) exhibit optical isomerism?

Discussion

3.	A compound is formed by two elements A and B. Atoms of element A forms the ccp lattice and those of element B occupies one third of the tetrahedral voids. The formula of the compound is:[0.77 Mark]
Answer» A compound is formed by two elements A and B. Atoms of element A forms the ccp lattice and those of element B occupies one third of the tetrahedral voids. The formula of the compound is: [0.77 Mark]

Discussion

4.	Functional isomers of CH3−CH2−CH2−COOH
Answer» Functional isomers of $C H_{3} - C H_{2} - C H_{2} - C O O H$

Discussion

5.	Mn2+ is much more resistant than Fe2+ towards oxidation. Give reason.
Answer» $M n^{2 +}$ is much more resistant than $F e^{2 +}$ towards oxidation. Give reason.

Discussion

6.	Consider toluene, ethylbenzene and cumene. Find the sum of H′s that are participating in hyperconjugation.
Answer» Consider toluene, ethylbenzene and cumene. Find the sum of $H^{'}$ s that are participating in hyperconjugation.

Discussion

7.	43. 1.7 g of ammonium salt was heated with excess of NaOH. The ammonia released in the process neutralises 100 cc solution of N/5 H2SO4. What is the percentage of ammonia in the salt?
Answer» 43. 1.7 g of ammonium salt was heated with excess of NaOH. The ammonia released in the process neutralises 100 cc solution of N/5 H2SO4. What is the percentage of ammonia in the salt?

Discussion

8.	27g Al reacts completely with how many grams Oxygen.
Answer» 27g Al reacts completely with how many grams Oxygen.

Discussion

9.	A metal forms 2 oxides .The higher oxide has 80% metal.0.72g of the lower oxide gave 0.8 g of higher oxide when oxidized. The ratio of weight of oxygen that combines with fixed weight of the metal in 2 oxides will be
Answer» A metal forms 2 oxides .The higher oxide has 80% metal.0.72g of the lower oxide gave 0.8 g of higher oxide when oxidized. The ratio of weight of oxygen that combines with fixed weight of the metal in 2 oxides will be

Discussion

10.	Derive an expression for apparent depth of coin placed in a beaker in liquid
Answer» Derive an expression for apparent depth of coin placed in a beaker in liquid

Discussion

11.	Pressure of one mole of an ideal gas varies with volume as per equation P=b–aV, where b and a are positive constants and V<ba always. Find the maximum temperature achievable by the gas during the process (R is the molar gas constant)
Answer» Pressure of one mole of an ideal gas varies with volume as per equation $P = b - a V$ , where $b$ and $a$ are positive constants and $V < \frac{b}{a}$ always. Find the maximum temperature achievable by the gas during the process $(R$ is the molar gas constant)

Discussion

12.	47. Total number of tetrahedral and octahedral voids present inside the hexagonal close packing structure
Answer» 47. Total number of tetrahedral and octahedral voids present inside the hexagonal close packing structure

Discussion

13.	The elements which occupy the peaks of ionization energy curve, are
Answer» The elements which occupy the peaks of ionization energy curve, are

Discussion

14.	What is degenerate orbitals explai
Answer» What is degenerate orbitals explai

Discussion

15.	1 joule is equal to
Answer» 1 joule is equal to

Discussion

16.	Which of the following molecule doesn't have a lone pair?
Answer» Which of the following molecule doesn't have a lone pair?

Discussion

17.	3. 18.4g of N2O4 is taken in a 1L closed vessel and heated till the equilibrium is reached N2O4(g)~>2NO2 (g)At equilibrium it is found that 50% of N2O4 is dissociated. What will be the value of equilibrium constant
Answer» 3. 18.4g of N2O4 is taken in a 1L closed vessel and heated till the equilibrium is reached N2O4(g)~>2NO2 (g)At equilibrium it is found that 50% of N2O4 is dissociated. What will be the value of equilibrium constant

Discussion

18.	The freezing point of aqueous solution containing20% w/w urea and 20% w/w NaOH also, will be(if K, of H2O is 1.8 K kg mol-')
Answer» The freezing point of aqueous solution containing20% w/w urea and 20% w/w NaOH also, will be(if K, of H2O is 1.8 K kg mol-')

Discussion

19.	32. Why electron affinity is only defined for neutral isolated gaseous atom and not for others
Answer» 32. Why electron affinity is only defined for neutral isolated gaseous atom and not for others

Discussion

20.	When the reaction between methyl iodide and sodium ethoxide occur, the product obtained is:
Answer» When the reaction between methyl iodide and sodium ethoxide occur, the product obtained is:

Discussion

21.	Calculate the magnitude of resonance energy of N2O (in kJ mol−1) from the following data: ΔH0f of N2O is 82 kJmol−1 Bond energies: N≡N 946 kJmol−1 N=N 418 kJmol−1 O=O 498 kJmol−1 N=O 607 kJmol−1
Answer» Calculate the magnitude of resonance energy of $N_{2} O (i n k J m o l^{- 1})$ from the following data: $Δ H_{f}^{0}$ of $N_{2} O$ is $82 k J m o l^{- 1}$ Bond energies: $N \equiv N 946 k J m o l^{- 1}$ $N = N 418 k J m o l^{- 1}$ $O = O 498 k J m o l^{- 1}$ $N = O 607 k J m o l^{- 1}$

Discussion

22.	Photochemical smog is _____ in character while classical smog is _____ in character.
Answer» Photochemical smog is _____ in character while classical smog is _____ in character.

Discussion

23.	The IUPAC symbol for the element with atomic number 119 would be:
Answer» The IUPAC symbol for the element with atomic number $119$ would be:

Discussion

24.	If there are intramolecular H bonding in a compound then would there be intermolecular H bonding present between two of those compounds( Is it possible to have intra and intermolecular H bonding present in the same compound) for eg. in O nitrophenol will it have intermolecular H bonding prestn along with Intramolecular H bonding
Answer» If there are intramolecular H bonding in a compound then would there be intermolecular H bonding present between two of those compounds( Is it possible to have intra and intermolecular H bonding present in the same compound) for eg. in O nitrophenol will it have intermolecular H bonding prestn along with Intramolecular H bonding

Discussion

25.	In a kingdom there was an excellent archer. The ruler was jealous of his archery skills, so he decided to put his skills to test. The archer was asked to shoot an apple which was placed on his son's head or else his son will be killed. The archer always used his trusted bow. Case 2: The archer was really confident but the ruler hired a thief to steal his bow and replace it with a defective one which is slightly bent to the side. This time when the archer shot from the new bow he always hit the same spot but slightly deviated from the apple. In this case the archer is:
Answer» In a kingdom there was an excellent archer. The ruler was jealous of his archery skills, so he decided to put his skills to test. The archer was asked to shoot an apple which was placed on his son's head or else his son will be killed. The archer always used his trusted bow. Case 2: The archer was really confident but the ruler hired a thief to steal his bow and replace it with a defective one which is slightly bent to the side. This time when the archer shot from the new bow he always hit the same spot but slightly deviated from the apple. In this case the archer is:

25.

In a kingdom there was an excellent archer. The ruler was jealous of his archery skills, so he decided to put his skills to test. The archer was asked to shoot an apple which was placed on his son's head or else his son will be killed. The archer always used his trusted bow. Case 2: The archer was really confident but the ruler hired a thief to steal his bow and replace it with a defective one which is slightly bent to the side. This time when the archer shot from the new bow he always hit the same spot but slightly deviated from the apple. In this case the archer is:

Answer»

In a kingdom there was an excellent archer. The ruler was jealous of his archery skills, so he decided to put his skills to test. The archer was asked to shoot an apple which was placed on his son's head or else his son will be killed. The archer always used his trusted bow.

Case 2: The archer was really confident but the ruler hired a thief to steal his bow and replace it with a defective one which is slightly bent to the side. This time when the archer shot from the new bow he always hit the same spot but slightly deviated from the apple. In this case the archer is:

Discussion

26.	The major product of the following reaction when heated is:
Answer» The major product of the following reaction when heated is:

Discussion

27.	entropy is.positive or negative for conversion of diamond to graphite
Answer» entropy is.positive or negative for conversion of diamond to graphite

Discussion

28.	Thenucleus decaysbyemission.Write down thedecayequation and determine the maximum kinetic energy of the electronsemitted. Given that:=22.994466 u=22.989770 u.
Answer» The nucleus decays byemission. Write down the decay equation and determine the maximum kinetic energy of the electrons emitted. Given that: = 22.994466 u = 22.989770 u.

28.

Thenucleus decaysbyemission.Write down thedecayequation and determine the maximum kinetic energy of the electronsemitted. Given that:=22.994466 u=22.989770 u.

Answer»

The
nucleus
decays
byemission.
Write down the
decay
equation and determine the maximum kinetic energy of the electrons
emitted. Given that:

=
22.994466 u

=
22.989770 u.

Discussion

29.	Why cr2+ acts as reducing agent it can also gain an electron and form half filled d5 confurigation
Answer» Why cr2+ acts as reducing agent it can also gain an electron and form half filled d5 confurigation

Discussion

30.	A polyatomic gas (γ=43) is compressed to 18 of its volume adiabatically and reversibly. If its initial pressure is P0 its new pressure will be
Answer» A polyatomic gas $(γ = \frac{4}{3})$ is compressed to $\frac{1}{8}$ of its volume adiabatically and reversibly. If its initial pressure is $P_{0}$ its new pressure will be

Discussion

31.	Among the following, the number of compounds that can react with PCl5 to give POCl3 is: C2H5OH, SO2, H2O, H2SO4, P4O10
Answer» Among the following, the number of compounds that can react with $P C l_{5}$ to give $P O C l_{3}$ is: $C_{2} H_{5} O H, S O_{2}, H_{2} O, H_{2} S O_{4}, P_{4} O_{10}$

Discussion

32.	For the cell reaction: Zn(s)+Cu2+(aq)→Cu(s)+Zn2+(aq) E0cell=1.10 V,ΔG0 is
Answer» For the cell reaction: $Z n (s) + C u^{2 +} (a q) \to C u (s) + Z n^{2 +} (a q)$ $E_{c e l l}^{0} = 1.10 V, Δ G^{0}$ is

Discussion

33.	26.Energy level falls from the 7th level to lower levels to give bands of Paschen series. Total number of bands are- A)4 B)3 C)2 D)1
Answer» 26.Energy level falls from the 7th level to lower levels to give bands of Paschen series. Total number of bands are- A)4 B)3 C)2 D)1

Discussion

34.	name a d block elemnt that displaces hydrogen from aquoueos solution of an acid and alkali
Answer» name a d block elemnt that displaces hydrogen from aquoueos solution of an acid and alkali

Discussion

35.	Which types of amino acid form zwitter ion?
Answer» Which types of amino acid form zwitter ion?

Discussion

36.	Will Fe react with HNO3??
Answer» Will Fe react with HNO3??

Discussion

37.	Mettez au féminin.1. Le musicien est souriant.2. L'acteur indien est beau.3. L'instituteur enseigne les élèves.4. Le coiffeur est anglais. Il coupe les cheveux d'un vieil homme.5. Le journaliste est gros et grand.6. Le boulanger est anthipathique.7. Le directeur est jeune.
Answer» Mettez au féminin. 1. Le musicien est souriant. 2. L'acteur indien est beau. 3. L'instituteur enseigne les élèves. 4. Le coiffeur est anglais. Il coupe les cheveux d'un vieil homme. 5. Le journaliste est gros et grand. 6. Le boulanger est anthipathique. 7. Le directeur est jeune.

Discussion

38.	Which of the following orders is correct for the bond dissociation energy of O+2,O2,O−2 and O2−2?
Answer» Which of the following orders is correct for the bond dissociation energy of $O_{2}^{+}, O_{2}, O_{2}^{-}$ and $O_{2}^{2 -}$ ?

Discussion

39.	Statement - 1: Complexes containing three bidentate ligands do not show optical activity. Statement - 2: Octahedral complex [Co(NH3)4Cl2]Cl shows geometrical isomerism.
Answer» Statement - 1: Complexes containing three bidentate ligands do not show optical activity. Statement - 2: Octahedral complex $[C o (N H_{3})_{4} C l_{2}] C l$ shows geometrical isomerism.

Discussion

40.	Two solutions A and B have pH values of 2 and 9 respectively which one of these two will give a pink colour with phenolphthalein indicator?
Answer» Two solutions A and B have pH values of 2 and 9 respectively which one of these two will give a pink colour with phenolphthalein indicator?

Discussion

41.	The solubility of AgCl of water at 25∘ C is 1.79×10−3 g/lit. Calculate (Ksp) AgCl at 25∘C.
Answer» The solubility of AgCl of water at $25^{\circ}$ C is $1.79 \times 10^{- 3}$ g/lit. Calculate $(K_{s p})$ AgCl at $25^{\circ} C .$

Discussion

42.	The resistance of a 0.2 M solution of an electrolyte is 50 Ω. The specific conductance of the solution is 1.4 S m−1 . The resistance of a 0.5 M solution of the same electrolyte occupying the same volume is 280 Ω. The molar conductivity of the above mentioned 0.5 M solution of the electrolyte in S m2mol−1 is:
Answer» The resistance of a $0.2 M$ solution of an electrolyte is $50 Ω$ . The specific conductance of the solution is $1.4 {S m}^{- 1}$ . The resistance of a $0.5 M$ solution of the same electrolyte occupying the same volume is $280 Ω$ . The molar conductivity of the above mentioned $0.5 M$ solution of the electrolyte in ${S m}^{2} {mol}^{- 1}$ is:

Discussion

43.	The ionic carbide is
Answer» The ionic carbide is

Discussion

44.	19. Assertion silicones are hydrophobic in nature reason: Si-0-si linkages are most sensitive why the reason is not true explain
Answer» 19. Assertion silicones are hydrophobic in nature reason: Si-0-si linkages are most sensitive why the reason is not true explain

Discussion

45.	Double bond equivalent of given compound is:
Answer» Double bond equivalent of given compound is:

Discussion

46.	anaphylactic shock explain in detial
Answer» anaphylactic shock explain in detial

Discussion

47.	Identify the structure of [B] in following sequence of reactions.
Answer» Identify the structure of [B] in following sequence of reactions.

Discussion

48.	Find out the value of K_c for each of the following equilibria from the value of Kp: (i) 2NOCl(g)↔2NO(g)+Cl2(g): Kp=1.8×10−2 at 500 K
Answer» Find out the value of K_c for each of the following equilibria from the value of $K_{p}$ : (i) $2 N O C l (g) \leftrightarrow 2 N O (g) + C l_{2} (g) : K_{p} = 1.8 \times 10^{- 2} a t 500 K$

Discussion

49.	34. If 1,3-dibromopropane reacts with zinc and NaI the product formed will be (1) propene (2) propane (3) cyclopropane (4) hexane
Answer» 34. If 1,3-dibromopropane reacts with zinc and NaI the product formed will be (1) propene (2) propane (3) cyclopropane (4) hexane

Discussion

50.	how to check steriosomerism
Answer» how to check steriosomerism

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

If λL1,λL2 and λL3 are wavelengths of 1st,2nd and 3rd lines of Lyman series λB1,λB2 and λB3 are wavelengths of 1st,2nd and 3rd lines of Balmer series while λP1 and λP2 are wavelengths of 1st,2nd lines of Paschen series of hydrogen then which of the following relations is/are correct?

Which of the following compound(s) exhibit optical isomerism?

A compound is formed by two elements A and B. Atoms of element A forms the ccp lattice and those of element B occupies one third of the tetrahedral voids. The formula of the compound is:[0.77 Mark]

Functional isomers of CH3−CH2−CH2−COOH

Mn2+ is much more resistant than Fe2+ towards oxidation. Give reason.

Consider toluene, ethylbenzene and cumene. Find the sum of H′s that are participating in hyperconjugation.

43. 1.7 g of ammonium salt was heated with excess of NaOH. The ammonia released in the process neutralises 100 cc solution of N/5 H2SO4. What is the percentage of ammonia in the salt?

27g Al reacts completely with how many grams Oxygen.

A metal forms 2 oxides .The higher oxide has 80% metal.0.72g of the lower oxide gave 0.8 g of higher oxide when oxidized. The ratio of weight of oxygen that combines with fixed weight of the metal in 2 oxides will be

Derive an expression for apparent depth of coin placed in a beaker in liquid

Pressure of one mole of an ideal gas varies with volume as per equation P=b–aV, where b and a are positive constants and V&lt;ba always. Find the maximum temperature achievable by the gas during the process (R is the molar gas constant)

47. Total number of tetrahedral and octahedral voids present inside the hexagonal close packing structure

The elements which occupy the peaks of ionization energy curve, are

What is degenerate orbitals explai

1 joule is equal to

Which of the following molecule doesn't have a lone pair?

3. 18.4g of N2O4 is taken in a 1L closed vessel and heated till the equilibrium is reached N2O4(g)~>2NO2 (g)At equilibrium it is found that 50% of N2O4 is dissociated. What will be the value of equilibrium constant

The freezing point of aqueous solution containing20% w/w urea and 20% w/w NaOH also, will be(if K, of H2O is 1.8 K kg mol-')

32. Why electron affinity is only defined for neutral isolated gaseous atom and not for others

When the reaction between methyl iodide and sodium ethoxide occur, the product obtained is:

Calculate the magnitude of resonance energy of N2O (in kJ mol−1) from the following data: ΔH0f of N2O is 82 kJmol−1 Bond energies: N≡N 946 kJmol−1 N=N 418 kJmol−1 O=O 498 kJmol−1 N=O 607 kJmol−1

Photochemical smog is _____ in character while classical smog is _____ in character.

The IUPAC symbol for the element with atomic number 119 would be:

The major product of the following reaction when heated is:

entropy is.positive or negative for conversion of diamond to graphite

Thenucleus decaysbyemission.Write down thedecayequation and determine the maximum kinetic energy of the electronsemitted. Given that:=22.994466 u=22.989770 u.

Why cr2+ acts as reducing agent it can also gain an electron and form half filled d5 confurigation

A polyatomic gas (γ=43) is compressed to 18 of its volume adiabatically and reversibly. If its initial pressure is P0 its new pressure will be

Among the following, the number of compounds that can react with PCl5 to give POCl3 is: C2H5OH, SO2, H2O, H2SO4, P4O10

For the cell reaction: Zn(s)+Cu2+(aq)→Cu(s)+Zn2+(aq) E0cell=1.10 V,ΔG0 is

26.Energy level falls from the 7th level to lower levels to give bands of Paschen series. Total number of bands are- A)4 B)3 C)2 D)1

name a d block elemnt that displaces hydrogen from aquoueos solution of an acid and alkali

Which types of amino acid form zwitter ion?

Will Fe react with HNO3??

Mettez au féminin.1. Le musicien est souriant.2. L'acteur indien est beau.3. L'instituteur enseigne les élèves.4. Le coiffeur est anglais. Il coupe les cheveux d'un vieil homme.5. Le journaliste est gros et grand.6. Le boulanger est anthipathique.7. Le directeur est jeune.

Which of the following orders is correct for the bond dissociation energy of O+2,O2,O−2 and O2−2?

Statement - 1: Complexes containing three bidentate ligands do not show optical activity. Statement - 2: Octahedral complex [Co(NH3)4Cl2]Cl shows geometrical isomerism.

Two solutions A and B have pH values of 2 and 9 respectively which one of these two will give a pink colour with phenolphthalein indicator?

The solubility of AgCl of water at 25∘ C is 1.79×10−3 g/lit. Calculate (Ksp) AgCl at 25∘C.

The ionic carbide is

19. Assertion silicones are hydrophobic in nature reason: Si-0-si linkages are most sensitive why the reason is not true explain

Double bond equivalent of given compound is:

anaphylactic shock explain in detial

Identify the structure of [B] in following sequence of reactions.

Find out the value of K_c for each of the following equilibria from the value of Kp: (i) 2NOCl(g)↔2NO(g)+Cl2(g): Kp=1.8×10−2 at 500 K

34. If 1,3-dibromopropane reacts with zinc and NaI the product formed will be (1) propene (2) propane (3) cyclopropane (4) hexane

how to check steriosomerism

Pressure of one mole of an ideal gas varies with volume as per equation P=b–aV, where b and a are positive constants and V<ba always. Find the maximum temperature achievable by the gas during the process (R is the molar gas constant)

Photochemical smog is _ in character while classical smog is _ in character.