46295 + Interview Questions in Chemistry

1.	In which of the following compounds does hydrogen bonding occur
Answer» In which of the following compounds does hydrogen bonding occur

1.

In which of the following compounds does hydrogen bonding occur

Answer»

In which of the following compounds does hydrogen bonding occur

2.	10. PtClNH3(py)Br is optically active or inactive?
Answer» 10. PtClNH3(py)Br is optically active or inactive?

Discussion

3.	Ch3-ch=ch-ch2-ch3 + hbr gives?
Answer» Ch3-ch=ch-ch2-ch3 + hbr gives?

Discussion

4.	The experimental molecular weight of an electrolyte will always be less than its calculated value because the value of Van't Hoff factor "i” is
Answer» The experimental molecular weight of an electrolyte will always be less than its calculated value because the value of Van't Hoff factor "i” is

Discussion

5.	What is meant by ‘demineralised’ water and how can it be obtained?
Answer» What is meant by ‘demineralised’ water and how can it be obtained?

5.

What is meant by ‘demineralised’ water and how can it be obtained?

Answer»

What is meant by ‘demineralised’ water and how can it be obtained?

Discussion

6.	The calculated value of magnetic moment of 26Fe+3 is
Answer» The calculated value of magnetic moment of $_{26} F e^{+ 3}$ is

Discussion

7.	A process cycle ABCA consisting of isothermal expansion AB, isobaric compression BC and adiabatic compression CA, for 1 mole of ideal gas is shown below. (Given: TA=TB=400K, λ=1.5;(2)13=1.26) Column IColumn IIColumn III(I)ΔQ=−247.5R(i)ΔU=165R(P)ΔW=165R(II)ΔQ=247.5R(ii)ΔU=−165R(Q)ΔW=400R(ln 2)(III)ΔQ=400R(ln 2)(iii)ΔU=82.5R(R)ΔW=−165R(IV)ΔQ=zero(iv)ΔU=zero(S)ΔW=−82.5R Which of the following options is correct for process A→B?
Answer» A process cycle ABCA consisting of isothermal expansion AB, isobaric compression BC and adiabatic compression CA, for 1 mole of ideal gas is shown below. (Given: $T_{A} = T_{B} = 400 K, λ = 1.5; (2)^{\frac{1}{3}} = 1.26)$ $\begin{matrix} C o l u m n I & C o l u m n I I & C o l u m n I I I (I) & Δ Q = - 247.5 R & (i) & Δ U = 165 R & (P) & Δ W = 165 R (I I) & Δ Q = 247.5 R & (i i) & Δ U = - 165 R & (Q) & Δ W = 400 R (l n 2) (I I I) & Δ Q = 400 R (l n 2) & (i i i) & Δ U = 82.5 R & (R) & Δ W = - 165 R (I V) & Δ Q = z e r o & (i v) & Δ U = z e r o & (S) & Δ W = - 82.5 R \end{matrix}$ Which of the following options is correct for process $A \to B$ ?

Discussion

8.	39. The reaction CH3COOH(l) + C2H5OH(l) CH3COOC2H5(l) + H2O(l) was carried out at 300 K by taking 1 mol each of reactants. The reaction reached equilibrium when of reactants were consumed. Calculate Gibb’s energy change for the reaction.
Answer» 39. The reaction CH3COOH(l) + C2H5OH(l) CH3COOC2H5(l) + H2O(l) was carried out at 300 K by taking 1 mol each of reactants. The reaction reached equilibrium when of reactants were consumed. Calculate Gibb’s energy change for the reaction.

Discussion

9.	Methanol and ethanol are distinguished by:
Answer» Methanol and ethanol are distinguished by:

Discussion

10.	Which of the following has intermolecular hydrogen bonds?
Answer» Which of the following has intermolecular hydrogen bonds?

Discussion

11.	Cr2O2−7H+⟶Cr3+Find the equivalent weight of Cr2O2−7 in the above redox half reaction.(Given the molar mass of Cr2O2−7 is M g/mol)
Answer» $C r_{2} O_{7}^{2 -}^{+} C r^{3 +}$ Find the equivalent weight of $C r_{2} O_{7}^{2 -}$ in the above redox half reaction. (Given the molar mass of $C r_{2} O_{7}^{2 -}$ is $M g / m o l$ )

Discussion

12.	Carbon tetrachloride (CCl4) is mixed in 390 g of benzene to make a solution for supporting an organic chemical reaction in which mole fraction of benzene is 0.91. Find the molality of the CCl4 solution.
Answer» Carbon tetrachloride $(C C l_{4})$ is mixed in 390 g of benzene to make a solution for supporting an organic chemical reaction in which mole fraction of benzene is 0.91. Find the molality of the $C C l_{4}$ solution.

Discussion

13.	To have practicle applications why are cross links quetioined in rubber?
Answer» To have practicle applications why are cross links quetioined in rubber?

Discussion

14.	Which pair is a pair of metalloids only?
Answer» Which pair is a pair of metalloids only?

Discussion

15.	The solubility of CaF2(Ksp=3.4×10−11) in 0.1 M solution of NaF would be:
Answer» The solubility of $C a F_{2} (K_{s p} = 3.4 \times 10^{- 11})$ in $0.1 M$ solution of $N a F$ would be:

Discussion

16.	Cool! Electra has mastered Equilibrium constants and has moved on to Gibb's energy.Electra was thinking, "When we calculate the Gibb's energy for a SHE using electrode potential, we get 0.So is it right to say that this half-cell ‘has no change in Gibb's energy’ ?" What will you tell her?
Answer» Cool! Electra has mastered Equilibrium constants and has moved on to Gibb's energy. Electra was thinking, "When we calculate the Gibb's energy for a SHE using electrode potential, we get 0. So is it right to say that this half-cell ‘has no change in Gibb's energy’ ?" What will you tell her?

Discussion

17.	how to find the number of electrons in 200g of CaCO3
Answer» how to find the number of electrons in 200g of CaCO3

Discussion

18.	Carbocation which is most stable is:
Answer» Carbocation which is most stable is:

Discussion

19.	Write short notes on:(1) Indicators (with proper example).(2) pH scale (with proper diagram).(3) Water of crystallization (with proper example).
Answer» Write short notes on: (1) Indicators (with proper example). (2) pH scale (with proper diagram). (3) Water of crystallization (with proper example).

19.

Write short notes on:(1) Indicators (with proper example).(2) pH scale (with proper diagram).(3) Water of crystallization (with proper example).

Answer»

Write short notes on:

(1) Indicators (with proper example).

(2) pH scale (with proper diagram).

(3) Water of crystallization (with proper example).

Discussion

20.	Do you want to have an idea of how small a nucleus is? Let's try finding the nuclear radius of 12560X. (The value of R0 is 1.1×10−15 SI units.) R= ×10−15m
Answer» Do you want to have an idea of how small a nucleus is? Let's try finding the nuclear radius of $_{60}^{125} X$ . (The value of $R_{0} i s 1.1 \times 10^{- 15} S I$ units.) R= $\times 10^{- 15} m$

Discussion

21.	in multi-electron atom 4s-orbital is lower in energy than 1)3d-orbital 2)3p-orbital 3)2s-orbital 4)2p-orbital
Answer» in multi-electron atom 4s-orbital is lower in energy than 1)3d-orbital 2)3p-orbital 3)2s-orbital 4)2p-orbital

Discussion

22.	The reaction:is classified as :(a) electrophilicsubstitution (b) nucleophilic substitution(c) elimination (d)addition
Answer» The reaction: is classified as : (a) electrophilic substitution (b) nucleophilic substitution (c) elimination (d) addition

22.

The reaction:is classified as :(a) electrophilicsubstitution (b) nucleophilic substitution(c) elimination (d)addition

Answer»

The reaction:

is classified as :

(a) electrophilic
substitution (b) nucleophilic substitution

(c) elimination (d)
addition

Discussion

23.	What is difference between covalency valence nd oxidation state,
Answer» What is difference between covalency valence nd oxidation state,

Discussion

24.	Calculate the volume occupied by 8.8 g of CO2 at 31.1∘ C and 1 bar pressure. (R=0.083 bar L K−1 mol−1)
Answer» Calculate the volume occupied by $8.8 g$ of $C O_{2}$ at ${31.1}^{\circ} C$ and $1 bar$ pressure. $(R = 0.083 {bar L K}^{- 1} {mol}^{- 1})$

Discussion

25.	41. Converstion of chemical unit of energy into s.i unit
Answer» 41. Converstion of chemical unit of energy into s.i unit

Discussion

26.	As temperature is raised from 20∘C to 40∘C, the average kinetic energy of neon atoms changes by a factor of which of the following?
Answer» As temperature is raised from $20^{\circ} C$ to $40^{\circ} C$ , the average kinetic energy of neon atoms changes by a factor of which of the following?

Discussion

27.	what does η^5represent in ferrocene \lbrack Fe{(η^5-C_5H_5)}_2\rbrack?
Answer» what does η^5represent in ferrocene \lbrack Fe{(η^5-C_5H_5)}_2\rbrack?

Discussion

28.	Is 1000cm3 equal to 1L?
Answer» Is 1000cm³ equal to 1L?

28.

Is 1000cm3 equal to 1L?

Answer»

Is 1000cm³

equal to 1L?

Discussion

29.	What are the different laws of vector?
Answer» What are the different laws of vector?

Discussion

30.	molecule having highest covalent character is 1.zncl2 2.kcl 3.cacl
Answer» molecule having highest covalent character is 1.zncl2 2.kcl 3.cacl

Discussion

31.	A SONAR (sound navigation and ranging)uses ultrasonic waves to detect and locate objects under water. In asubmarine equipped with a SONAR the time delay between generation ofa probe wave and the reception of its echo after reflection from anenemy submarine is found to be 77.0 s. What is the distance of theenemy submarine? (Speed of sound in water = 1450 m s–1).
Answer» A SONAR (sound navigation and ranging) uses ultrasonic waves to detect and locate objects under water. In a submarine equipped with a SONAR the time delay between generation of a probe wave and the reception of its echo after reflection from an enemy submarine is found to be 77.0 s. What is the distance of the enemy submarine? (Speed of sound in water = 1450 m s^–1).

Discussion

32.	39. The number of alpha hydrogen atoms present in the C2H5-C(+)-CH3-H,(here C is positively charged and have methyl group as substituent) 9 8 5 4
Answer» 39. The number of alpha hydrogen atoms present in the C2H5-C(+)-CH3-H,(here C is positively charged and have methyl group as substituent) 9 8 5 4

Discussion

33.	The structures obtained on acidification (H+) and basification (OH-) of alaline yields respectively
Answer» The structures obtained on acidification (H+) and basification (OH-) of alaline yields respectively

Discussion

34.	the distance between H+ and Cl- ions in HCl molecule is 1.28angstrom . What will be the potential due to this dipole at a distance of 12 angstrom on the axis of dipole?
Answer» the distance between H+ and Cl- ions in HCl molecule is 1.28angstrom . What will be the potential due to this dipole at a distance of 12 angstrom on the axis of dipole?

Discussion

35.	44. 3g of a metal Master combines with 2g of oxygen to form its metal oxide. 0.03 equivalent of this metal oxide is dissolve in 500ml of water to form 0.01 molar aqueous solutions. Molar mass of metal oxide is (assuming no change in volume of solutions)
Answer» 44. 3g of a metal Master combines with 2g of oxygen to form its metal oxide. 0.03 equivalent of this metal oxide is dissolve in 500ml of water to form 0.01 molar aqueous solutions. Molar mass of metal oxide is (assuming no change in volume of solutions)

Discussion

36.	Which of the following compounds can exhibit linkage isomerism?
Answer» Which of the following compounds can exhibit linkage isomerism?

Discussion

37.	In the question arrange the compounds in increasing order of rate of reaction towards nucleophilic substitution. (a) (i) < (ii) < (iii) (b) (iii) < (ii) < (i) (c) (i) < (iii) < (ii) (d) (iii) < (i) < (ii)
Answer» In the question arrange the compounds in increasing order of rate of reaction towards nucleophilic substitution. (a) (i) < (ii) < (iii) (b) (iii) < (ii) < (i) (c) (i) < (iii) < (ii) (d) (iii) < (i) < (ii)

37.

In the question arrange the compounds in increasing order of rate of reaction towards nucleophilic substitution. (a) (i) < (ii) < (iii) (b) (iii) < (ii) < (i) (c) (i) < (iii) < (ii) (d) (iii) < (i) < (ii)

Answer»

In the question arrange the compounds in increasing order of rate of reaction towards nucleophilic substitution.

(a) (i) < (ii) < (iii) (b) (iii) < (ii) < (i) (c) (i) < (iii) < (ii) (d) (iii) < (i) < (ii)

Discussion

38.	20. What are the Total Number of atoms in Maitotoxin?
Answer» 20. What are the Total Number of atoms in Maitotoxin?

Discussion

39.	16. Can Q=n.(C)v.del t =del E here (C)v= Molar specific heat n = number of moles
Answer» 16. Can Q=n.(C)v.del t =del E here (C)v= Molar specific heat n = number of moles

Discussion

40.	Why crystalline solids are called anisotropic even though they hav regular arrangements. How come the readings of refractive index is different whereas in case of amorphous its the same.
Answer» Why crystalline solids are called anisotropic even though they hav regular arrangements. How come the readings of refractive index is different whereas in case of amorphous its the same.

Discussion

41.	Calculate the percent error in the \lbrack H,O°ledR1 made by neglecting theionisation of water in 10-6 M NaOH solution.
Answer» Calculate the percent error in the \lbrack H,O°ledR1 made by neglecting theionisation of water in 10-6 M NaOH solution.

Discussion

42.	What is the difference between maekovnikov and antimarkonikov product?
Answer» What is the difference between maekovnikov and antimarkonikov product?

Discussion

43.	By which reagent alkyne converts to cis-alkene? i.e. C6H11−C≡C−CH3R⟶cis-alkene:
Answer» By which reagent alkyne converts to cis-alkene? i.e. $C_{6} H_{11} - C \equiv C - C H_{3} R ⟶ cis-alkene$ :

Discussion

44.	For and elementary reaction 2A B, the rate of disappearance of A is equal to :-(1) 2k1[A]2 + 2k2[B] (2) 2k1[A]2 – 2k2[B](3) 2k1 – k2[A]
Answer» For and elementary reaction 2A B, the rate of disappearance of A is equal to :- (1) 2k1[A]2 + 2k2[B] (2) 2k1[A]2 – 2k2[B] (3) 2k1 – k2[A]

Discussion

45.	Graphs of Logarithmic function
Answer» Graphs of Logarithmic function

Discussion

46.	The mole fraction of a solution of acetone (C3H6O) in heptane (C7H16) is 0.1 , Its molality is:
Answer» The mole fraction of a solution of acetone $(C_{3} H_{6} O)$ in heptane $(C_{7} H_{16})$ is 0.1 , Its molality is:

Discussion

47.	What is the complete IUPAC name of the following substance ?
Answer» What is the complete IUPAC name of the following substance ?

Discussion

48.	Number of moles of ferrous sulphate oxidized by 1 mole of potassium permanganate in acidic medium is:(1) 2/5. (2) 5/2. (3) 1/5. (4) 5.
Answer» Number of moles of ferrous sulphate oxidized by 1 mole of potassium permanganate in acidic medium is: (1) 2/5. (2) 5/2. (3) 1/5. (4) 5.

Discussion

49.	what is the stable oxidation state tin +2 or +4?
Answer» what is the stable oxidation state tin +2 or +4?

Discussion

50.	An organic compound containing C and H gave the following analysis: C=40%,H=6.7% and the remaining, oxygen. Its empirical formula would be:
Answer» An organic compound containing $C$ and $H$ gave the following analysis: $C = 40 %, H = 6.7 %$ and the remaining, oxygen. Its empirical formula would be:

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

In which of the following compounds does hydrogen bonding occur

10. PtClNH3(py)Br is optically active or inactive?

Ch3-ch=ch-ch2-ch3 + hbr gives?

The experimental molecular weight of an electrolyte will always be less than its calculated value because the value of Van't Hoff factor "i” is

What is meant by ‘demineralised’ water and how can it be obtained?

The calculated value of magnetic moment of 26Fe+3 is

39. The reaction CH3COOH(l) + C2H5OH(l) CH3COOC2H5(l) + H2O(l) was carried out at 300 K by taking 1 mol each of reactants. The reaction reached equilibrium when of reactants were consumed. Calculate Gibb’s energy change for the reaction.

Methanol and ethanol are distinguished by:

Which of the following has intermolecular hydrogen bonds?

Cr2O2−7H+⟶Cr3+Find the equivalent weight of Cr2O2−7 in the above redox half reaction.(Given the molar mass of Cr2O2−7 is M g/mol)

Carbon tetrachloride (CCl4) is mixed in 390 g of benzene to make a solution for supporting an organic chemical reaction in which mole fraction of benzene is 0.91. Find the molality of the CCl4 solution.

To have practicle applications why are cross links quetioined in rubber?

Which pair is a pair of metalloids only?

The solubility of CaF2(Ksp=3.4×10−11) in 0.1 M solution of NaF would be:

Cool! Electra has mastered Equilibrium constants and has moved on to Gibb's energy.Electra was thinking, "When we calculate the Gibb's energy for a SHE using electrode potential, we get 0.So is it right to say that this half-cell ‘has no change in Gibb's energy’ ?" What will you tell her?

how to find the number of electrons in 200g of CaCO3

Carbocation which is most stable is:

Write short notes on:(1) Indicators (with proper example).(2) pH scale (with proper diagram).(3) Water of crystallization (with proper example).

Do you want to have an idea of how small a nucleus is? Let's try finding the nuclear radius of 12560X. (The value of R0 is 1.1×10−15 SI units.) R= ×10−15m

in multi-electron atom 4s-orbital is lower in energy than 1)3d-orbital 2)3p-orbital 3)2s-orbital 4)2p-orbital

The reaction:is classified as :(a) electrophilicsubstitution (b) nucleophilic substitution(c) elimination (d)addition

What is difference between covalency valence nd oxidation state,

Calculate the volume occupied by 8.8 g of CO2​ at 31.1∘ C and 1 bar pressure. (R=0.083 bar L K−1 mol−1)

41. Converstion of chemical unit of energy into s.i unit

As temperature is raised from 20∘C to 40∘C, the average kinetic energy of neon atoms changes by a factor of which of the following?

what does η^5represent in ferrocene \lbrack Fe{(η^5-C_5H_5)}_2\rbrack?

Is 1000cm3 equal to 1L?

What are the different laws of vector?

molecule having highest covalent character is 1.zncl2 2.kcl 3.cacl

39. The number of alpha hydrogen atoms present in the C2H5-C(+)-CH3-H,(here C is positively charged and have methyl group as substituent) 9 8 5 4

The structures obtained on acidification (H+) and basification (OH-) of alaline yields respectively

the distance between H+ and Cl- ions in HCl molecule is 1.28angstrom . What will be the potential due to this dipole at a distance of 12 angstrom on the axis of dipole?

44. 3g of a metal Master combines with 2g of oxygen to form its metal oxide. 0.03 equivalent of this metal oxide is dissolve in 500ml of water to form 0.01 molar aqueous solutions. Molar mass of metal oxide is (assuming no change in volume of solutions)

Which of the following compounds can exhibit linkage isomerism?

In the question arrange the compounds in increasing order of rate of reaction towards nucleophilic substitution. (a) (i) &lt; (ii) &lt; (iii) (b) (iii) &lt; (ii) &lt; (i) (c) (i) &lt; (iii) &lt; (ii) (d) (iii) &lt; (i) &lt; (ii)

20. What are the Total Number of atoms in Maitotoxin?

16. Can Q=n.(C)v.del t =del E here (C)v= Molar specific heat n = number of moles

Why crystalline solids are called anisotropic even though they hav regular arrangements. How come the readings of refractive index is different whereas in case of amorphous its the same.

Calculate the percent error in the \lbrack H,O°ledR1 made by neglecting theionisation of water in 10-6 M NaOH solution.

What is the difference between maekovnikov and antimarkonikov product?

By which reagent alkyne converts to cis-alkene? i.e. C6H11−C≡C−CH3R⟶cis-alkene:

For and elementary reaction 2A B, the rate of disappearance of A is equal to :-(1) 2k1[A]2 + 2k2[B] (2) 2k1[A]2 – 2k2[B](3) 2k1 – k2[A]

Graphs of Logarithmic function

The mole fraction of a solution of acetone (C3H6O) in heptane (C7H16) is 0.1 , Its molality is:

What is the complete IUPAC name of the following substance ?

Number of moles of ferrous sulphate oxidized by 1 mole of potassium permanganate in acidic medium is:(1) 2/5. (2) 5/2. (3) 1/5. (4) 5.

what is the stable oxidation state tin +2 or +4?

An organic compound containing C and H gave the following analysis: C=40%,H=6.7% and the remaining, oxygen. Its empirical formula would be:

Calculate the volume occupied by 8.8 g of CO2 at 31.1∘ C and 1 bar pressure. (R=0.083 bar L K−1 mol−1)

In the question arrange the compounds in increasing order of rate of reaction towards nucleophilic substitution. (a) (i) < (ii) < (iii) (b) (iii) < (ii) < (i) (c) (i) < (iii) < (ii) (d) (iii) < (i) < (ii)