46295 + Interview Questions in Chemistry

1.	The most stable conformation of chlorocyclohexane at room temperature is:
Answer» The most stable conformation of chlorocyclohexane at room temperature is:

Discussion

2.	Calculate the degree of ionization of 0.05M acetic acid if its pKa value is 4.74. How is the degree of dissociation affected when its solution also contains 0.01 M 0.1 M in HCl?
Answer» Calculate the degree of ionization of 0.05M acetic acid if its pKa value is 4.74. How is the degree of dissociation affected when its solution also contains 0.01 M 0.1 M in HCl?

2.

Calculate the degree of ionization of 0.05M acetic acid if its pKa value is 4.74. How is the degree of dissociation affected when its solution also contains 0.01 M 0.1 M in HCl?

Answer»

Calculate the degree of ionization of 0.05M acetic acid if its pKa value is 4.74.
How is the degree of dissociation affected when its solution also contains
0.01 M

0.1 M in HCl?

Discussion

3.	QUESTION 2.12 State Henry's law and mention some important applications?
Answer» QUESTION 2.12 State Henry's law and mention some important applications?

3.

QUESTION 2.12 State Henry's law and mention some important applications?

Answer»

QUESTION 2.12

State Henry's law and mention some important applications?

Discussion

4.	For a reaction A⇌P, the plots of [A] and [P] with time temperatrues T1 and T2 are given below. If T2>T1, the correct statement(s) is (are) (Assume ΔHθ and ΔSθ are independent of temperature and ratio of ln K at T1 to lnK at T2 is greater than T2T1. Here H, S, G and K are enthalpy, entropy, Gibbs energy and equilibrium constant, respectively.)
Answer» For a reaction $A ⇌ P$ , the plots of [A] and [P] with time temperatrues $T_{1}$ and $T_{2}$ are given below. If $T_{2} > T_{1}$ , the correct statement(s) is (are) (Assume $Δ H^{θ}$ and $Δ S^{θ}$ are independent of temperature and ratio of ln K at $T_{1}$ to lnK at $T_{2}$ is greater than $\frac{T_{2}}{T_{1}}$ . Here H, S, G and K are enthalpy, entropy, Gibbs energy and equilibrium constant, respectively.)

Discussion

5.	What is (are) true about NO and ClO2?
Answer» What is (are) true about $N O$ and $C l O_{2}$ ?

Discussion

6.	No. of electrons in 1.8 ml of H2O(l) is
Answer» No. of electrons in 1.8 ml of $H_{2} O$ (l) is

Discussion

7.	Draw the structures of the following: (a) H2S2O8 (b) ClF3
Answer» Draw the structures of the following: (a) $H_{2} S_{2} O_{8}$ (b) $C l F_{3}$

Discussion

8.	The molarity of a solution having 8.4 volume strength of H2O2 is:
Answer» The molarity of a solution having 8.4 volume strength of $H_{2} O_{2}$ is:

Discussion

9.	The correct order of nucleophilic-addition elimination reaction is
Answer» The correct order of nucleophilic-addition elimination reaction is

Discussion

10.	If a Calcium atom with atomic number 20 and mass number 41 undergoes a β− (beta minus). The value of Z is ___ and A is ___ in the daughter nucleus.
Answer» If a Calcium atom with atomic number 20 and mass number 41 undergoes a $β^{-}$ (beta minus). The value of Z is ___ and A is ___ in the daughter nucleus.

Discussion

11.	An ideal gas undergoes an isothermal process. The pressure P of the gas is plotted against the mean free path 'λ' of the molecules. Select the correct graph.
Answer» An ideal gas undergoes an isothermal process. The pressure P of the gas is plotted against the mean free path ' $λ$ ' of the molecules. Select the correct graph.

Discussion

12.	Which among the following species is an ambident nucleophile?
Answer» Which among the following species is an ambident nucleophile?

Discussion

13.	In young’s double slit interference experiment, using two coherent waves of different amplitudes, the intensities ratio between bright and dark fringes is 3. Then, the value of the ratio of the amplitudes of the wave that arrive there is:
Answer» In young’s double slit interference experiment, using two coherent waves of different amplitudes, the intensities ratio between bright and dark fringes is 3. Then, the value of the ratio of the amplitudes of the wave that arrive there is:

Discussion

14.	Insulin (C2H10O5)n is dissolved in a suitable solvent and the osmotic pressure (π) of solutions of various concentrations (g/cm3) C is measured at 20℃. The slope of a plot of π against C is found to be 4.65 × 10-3. The molecular weight of insulin is
Answer» Insulin (C₂H₁₀O₅)_nis dissolved in a suitable solvent and the osmotic pressure (π) of solutions of various concentrations (g/cm³) C is measured at 20℃. The slope of a plot of π against C is found to be 4.65 × 10^-3. The molecular weight of insulin is

Discussion

15.	What are heterogeneous and homogeneous mixtures?
Answer» What are heterogeneous and homogeneous mixtures?

Discussion

16.	How to balance the following equation by oxidation number method. Br−+MnO−4→BrO−3+MnO2
Answer» How to balance the following equation by oxidation number method. $B r^{-} + M n O_{4}^{-} \to B r O_{3}^{-} + M n O_{2}$

Discussion

17.	The total number of cyclic isomers for the hydrocarbon having the formula C4H6 is ___
Answer» The total number of cyclic isomers for the hydrocarbon having the formula $C_{4} H_{6}$ is ___

Discussion

18.	Major binding force in silicon is a) ionic bond b) covalent bond c) dipole dipole interaction d) induced dipole dipole interaction
Answer» Major binding force in silicon is a) ionic bond b) covalent bond c) dipole dipole interaction d) induced dipole dipole interaction

18.

Major binding force in silicon is a) ionic bond b) covalent bond c) dipole dipole interaction d) induced dipole dipole interaction

Answer»

Major binding force in silicon is

a) ionic bond

b) covalent bond

c) dipole dipole interaction

d) induced dipole dipole interaction

Discussion

19.	0.3 g of an organic compound gives 50 mL of N2 gas at 27∘ C and 715 mm of Hg pressure. Calculate the percentage of N2, given that the aqueous tension at 27∘ C is 15 mm of Hg.
Answer» $0.3 g$ of an organic compound gives $50 mL$ of $N_{2}$ gas at $27^{\circ} C$ and $715 mm$ of Hg pressure. Calculate the percentage of $N_{2}$ , given that the aqueous tension at $27^{\circ} C$ is $15 mm$ of $H g$ .

Discussion

20.	Statement - I: Cl− and Ca2+ are isoelectronic species. Statement - II: Isoelectronic species should have same charges.
Answer» Statement - I: $C l^{-} a n d C a^{2 +}$ are isoelectronic species. Statement - II: Isoelectronic species should have same charges.

Discussion

21.	Ground state electronic configuration of nitrogen atom can be represented by
Answer» Ground state electronic configuration of nitrogen atom can be represented by

Discussion

22.	Which of the following is not true?
Answer» Which of the following is not true?

Discussion

23.	Strength of H2O2 is 15.18 gL-1, then it is equal to _________ volume.
Answer» Strength of H₂O₂is 15.18 gL^-1, then it is equal to _{_________} volume.

Discussion

24.	Among the following compounds, the one that is polar and has the central atom with sp2 hybridization is:
Answer» Among the following compounds, the one that is polar and has the central atom with ${s p}^{2}$ hybridization is:

Discussion

25.	The correct variation of gravitational potential V with radius r measured form the centre of earth of radius R is given by
Answer» The correct variation of gravitational potential V with radius r measured form the centre of earth of radius R is given by

Discussion

26.	How does Ag have 2.830*10^25 electrons(particles per mole)plz explain the reason
Answer» How does Ag have 2.830*10^25 electrons(particles per mole)plz explain the reason

Discussion

27.	Can u just explain all the formulas used in mole concept?
Answer» Can u just explain all the formulas used in mole concept?

Discussion

28.	Order of magnitude of density of Uranium nucleus : (1)10^20 kg/m^3 (2)10^17 kg/m^3 (3)10^14 kg/m^3 (4)10^11 kg /m^3
Answer» Order of magnitude of density of Uranium nucleus : (1)10^20 kg/m^3 (2)10^17 kg/m^3 (3)10^14 kg/m^3 (4)10^11 kg /m^3

Discussion

29.	1)How many unit cells are present in a cube shaped ideal crystal of NaCl of mass 1gm? 2) If edge length of a KCl unit is 488pm ,what is the length of KCl bond if it crystalises in fcc structure?
Answer» 1)How many unit cells are present in a cube shaped ideal crystal of NaCl of mass 1gm? 2) If edge length of a KCl unit is 488pm ,what is the length of KCl bond if it crystalises in fcc structure?

Discussion

30.	What is the difference between multimolecular and macromolecular colloids? Give one example of each. How are associated colloids different from these two types of colloids?
Answer» What is the difference between multimolecular and macromolecular colloids? Give one example of each. How are associated colloids different from these two types of colloids?

Discussion

31.	Which of the following compound will give a blood red colour while doing Lassaigne's test?
Answer» Which of the following compound will give a blood red colour while doing Lassaigne's test?

Discussion

32.	Which of the following will have highest pH ?
Answer» Which of the following will have highest pH ?

Discussion

33.	Calculate the number of moles of methanol in 5 liters in 2m solution.
Answer» Calculate the number of moles of methanol in 5 liters in 2m solution.

Discussion

34.	Which type of cell division occurs in sex cells?
Answer» Which type of cell division occurs in sex cells?

Discussion

35.	The correct set of quantum numbers (n l m) for the unpaired e− of chlorine is:
Answer» The correct set of quantum numbers ( $n l m$ ) for the unpaired $e^{-}$ of chlorine is:

Discussion

36.	0.5 moles of gas A and x moles of gas B exert a pressure of 200 Pa in a container of volume 10 m3 at 1000 K. Given R is the gas constant in JK−1mol−1, then x is:
Answer» $0.5$ moles of gas $A$ and $x$ moles of gas $B$ exert a pressure of $200 P a$ in a container of volume $10 m^{3}$ at $1000 K$ . Given $R$ is the gas constant in $J K^{- 1} m o l^{- 1}$ , then $x$ is:

Discussion

37.	Which of the following is oxidised by KMnO4
Answer» Which of the following is oxidised by KMnO4

Discussion

38.	When a mixture of carbon monoxide and chlorine is exposed to sunlight the product formed is :
Answer» When a mixture of carbon monoxide and chlorine is exposed to sunlight the product formed is :

Discussion

39.	Which is a buffer solution
Answer» Which is a buffer solution

39.

Which is a buffer solution

Answer»

Which is a buffer solution

Discussion

40.	In the detection of carbon, lime water turns milky due to the formation of:
Answer» In the detection of carbon, lime water turns milky due to the formation of:

Discussion

41.	Most basic amongst the following is
Answer» Most basic amongst the following is

Discussion

42.	Name a metal carbonate which is soluble in water.
Answer» Name a metal carbonate which is soluble in water.

Discussion

43.	A gas is expanded from volume V0 to 2V0 under three different processes, as shown in the figure. Process 1 is isobaric process, process 2 is isothermal and process 3 is adiabatic. Let ΔU1,ΔU2 and ΔU3 be the change in the internal energy of the gas in these three processes, then:
Answer» A gas is expanded from volume $V_{0} t o 2 V_{0}$ under three different processes, as shown in the figure. Process 1 is isobaric process, process 2 is isothermal and process 3 is adiabatic. Let $Δ U_{1}, Δ U_{2}$ and $Δ U_{3}$ be the change in the internal energy of the gas in these three processes, then:

43.

A gas is expanded from volume V0 to 2V0 under three different processes, as shown in the figure. Process 1 is isobaric process, process 2 is isothermal and process 3 is adiabatic. Let ΔU1,ΔU2 and ΔU3 be the change in the internal energy of the gas in these three processes, then:

Answer»

A gas is expanded from volume $V_{0} t o 2 V_{0}$ under three different processes, as shown in the figure. Process 1 is isobaric process, process 2 is isothermal and process 3 is adiabatic. Let $Δ U_{1}, Δ U_{2}$ and $Δ U_{3}$ be the change in the internal energy of the gas in these three processes, then:

Discussion

44.	Which scientist proposed that atomic number is more fundamental property of an element than its atomic mass?
Answer» Which scientist proposed that atomic number is more fundamental property of an element than its atomic mass?

Discussion

45.	If the solubility product of a sparingly soluble salt Li3PO4 is 2.7×10−9. The concentration (mol L−1) of Li+ ions in the saturated solution of the salt is: Given : (100)14=3.16
Answer» If the solubility product of a sparingly soluble salt $L i_{3} P O_{4}$ is $2.7 \times 10^{- 9}$ . The concentration $(m o l L^{- 1})$ of $L i^{+}$ ions in the saturated solution of the salt is: Given : $(100)$ $^{\frac{1}{4}} = 3.16$

Discussion

46.	(i) What class of drug is Ranitidine ? (ii) If water contains dissolved Ca2+ions, out of soaps and synthetic detergents, which will you use for cleaning clothes ? (iii) Which of the following is an antiseptic ? 0.2% phenol, 1% phenol.
Answer» (i) What class of drug is Ranitidine ? (ii) If water contains dissolved $C a^{2 +} i o n s,$ out of soaps and synthetic detergents, which will you use for cleaning clothes ? (iii) Which of the following is an antiseptic ? 0.2% phenol, 1% phenol.

Discussion

47.	The increasing order of the rate of reaction towards nucleophilic substitution in the following compounds is:
Answer» The increasing order of the rate of reaction towards nucleophilic substitution in the following compounds is:

47.

The increasing order of the rate of reaction towards nucleophilic substitution in the following compounds is:

Answer»

The increasing order of the rate of reaction towards nucleophilic substitution in the following compounds is:

Discussion

48.	The wavelength of the first member of the Balmer series in hydrogen spectrum is A0.Then the wave length (in A0) of the first member of Lyman series in the same spectrum is
Answer» The wavelength of the first member of the Balmer series in hydrogen spectrum is $A^{0}$ .Then the wave length (in $A^{0}$ ) of the first member of Lyman series in the same spectrum is

Discussion

49.	In BF3
Answer» In BF $_{3}$

Discussion

50.	The isomer of dichlorobenzene which has highest boiling point
Answer» The isomer of dichlorobenzene which has highest boiling point

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

The most stable conformation of chlorocyclohexane at room temperature is:

Calculate the degree of ionization of 0.05M acetic acid if its pKa value is 4.74. How is the degree of dissociation affected when its solution also contains 0.01 M 0.1 M in HCl?

QUESTION 2.12 State Henry's law and mention some important applications?

What is (are) true about NO and ClO2?

No. of electrons in 1.8 ml of H2O(l) is

Draw the structures of the following: (a) H2S2O8 (b) ClF3

The molarity of a solution having 8.4 volume strength of H2O2 is:

The correct order of nucleophilic-addition elimination reaction is

If a Calcium atom with atomic number 20 and mass number 41 undergoes a β− (beta minus). The value of Z is ___ and A is ___ in the daughter nucleus.

An ideal gas undergoes an isothermal process. The pressure P of the gas is plotted against the mean free path 'λ' of the molecules. Select the correct graph.

Which among the following species is an ambident nucleophile?

In young’s double slit interference experiment, using two coherent waves of different amplitudes, the intensities ratio between bright and dark fringes is 3. Then, the value of the ratio of the amplitudes of the wave that arrive there is:

Insulin (C2H10O5)n is dissolved in a suitable solvent and the osmotic pressure (π) of solutions of various concentrations (g/cm3) C is measured at 20℃. The slope of a plot of π against C is found to be 4.65 × 10-3. The molecular weight of insulin is

What are heterogeneous and homogeneous mixtures?

How to balance the following equation by oxidation number method. Br−+MnO−4→BrO−3+MnO2

The total number of cyclic isomers for the hydrocarbon having the formula C4H6 is ___

Major binding force in silicon is a) ionic bond b) covalent bond c) dipole dipole interaction d) induced dipole dipole interaction

0.3 g of an organic compound gives 50 mL of N2 gas at 27∘ C and 715 mm of Hg pressure. Calculate the percentage of N2, given that the aqueous tension at 27∘ C is 15 mm of Hg.

Statement - I: Cl− and Ca2+ are isoelectronic species. Statement - II: Isoelectronic species should have same charges.

Ground state electronic configuration of nitrogen atom can be represented by

Which of the following is not true?

Strength of H2O2 is 15.18 gL-1, then it is equal to _________ volume.

Among the following compounds, the one that is polar and has the central atom with sp2 hybridization is:

The correct variation of gravitational potential V with radius r measured form the centre of earth of radius R is given by

How does Ag have 2.830*10^25 electrons(particles per mole)plz explain the reason

Can u just explain all the formulas used in mole concept?

Order of magnitude of density of Uranium nucleus : (1)10^20 kg/m^3 (2)10^17 kg/m^3 (3)10^14 kg/m^3 (4)10^11 kg /m^3

1)How many unit cells are present in a cube shaped ideal crystal of NaCl of mass 1gm? 2) If edge length of a KCl unit is 488pm ,what is the length of KCl bond if it crystalises in fcc structure?

What is the difference between multimolecular and macromolecular colloids? Give one example of each. How are associated colloids different from these two types of colloids?

Which of the following compound will give a blood red colour while doing Lassaigne's test?

Which of the following will have highest pH ?

Calculate the number of moles of methanol in 5 liters in 2m solution.

Which type of cell division occurs in sex cells?

The correct set of quantum numbers (n l m) for the unpaired e− of chlorine is:

0.5 moles of gas A and x moles of gas B exert a pressure of 200 Pa in a container of volume 10 m3 at 1000 K. Given R is the gas constant in JK−1mol−1, then x is:

Which of the following is oxidised by KMnO4

When a mixture of carbon monoxide and chlorine is exposed to sunlight the product formed is :

Which is a buffer solution

In the detection of carbon, lime water turns milky due to the formation of:

Most basic amongst the following is

Name a metal carbonate which is soluble in water.

A gas is expanded from volume V0 to 2V0 under three different processes, as shown in the figure. Process 1 is isobaric process, process 2 is isothermal and process 3 is adiabatic. Let ΔU1,ΔU2 and ΔU3 be the change in the internal energy of the gas in these three processes, then:

Which scientist proposed that atomic number is more fundamental property of an element than its atomic mass?

If the solubility product of a sparingly soluble salt Li3PO4 is 2.7×10−9. The concentration (mol L−1) of Li+ ions in the saturated solution of the salt is: Given : (100)14=3.16

(i) What class of drug is Ranitidine ? (ii) If water contains dissolved Ca2+ions, out of soaps and synthetic detergents, which will you use for cleaning clothes ? (iii) Which of the following is an antiseptic ? 0.2% phenol, 1% phenol.

The increasing order of the rate of reaction towards nucleophilic substitution in the following compounds is:

The wavelength of the first member of the Balmer series in hydrogen spectrum is A0.Then the wave length (in A0) of the first member of Lyman series in the same spectrum is

In BF3

The isomer of dichlorobenzene which has highest boiling point

If a Calcium atom with atomic number 20 and mass number 41 undergoes a β− (beta minus). The value of Z is _ and A is _ in the daughter nucleus.