46295 + Interview Questions in Chemistry

1.	A system undergoes a process in which system releases 200 J heat and work done by the surroundings is 300 J. Change in internal energy of the system is
Answer» A system undergoes a process in which system releases 200 J heat and work done by the surroundings is 300 J. Change in internal energy of the system is

Discussion

2.	20 dm3 of SO2 diffuses through a porous partition in 60 s. What volume (in dm3) of O2 will diffuse under similar conditions in 30 s?
Answer» $20 {dm}^{3}$ of $S O_{2}$ diffuses through a porous partition in $60 s .$ What volume ( ${in dm}^{3}$ ) of $O_{2}$ will diffuse under similar conditions in $30 s$ ?

Discussion

3.	Sulphur is pharamagnetic in nature at its vapour state I miss question
Answer» Sulphur is pharamagnetic in nature at its vapour state I miss question

Discussion

4.	Major product (A) is :
Answer» Major product (A) is :

4.

Major product (A) is :

Answer»

Major product (A) is :

Discussion

5.	The change in entropy of 2 moles of an ideal gas upon isothermal expansion at 243.6 K from 20 litre until the pressure becomes 1 atm, is
Answer» The change in entropy of 2 moles of an ideal gas upon isothermal expansion at 243.6 K from 20 litre until the pressure becomes 1 atm, is

Discussion

6.	If z is the inter-nuclear axis, the π moleculer orbitals are formed by overlapping of –
Answer» If z is the inter-nuclear axis, the π moleculer orbitals are formed by overlapping of –

Discussion

7.	The Ka of an acid is 3.2 × 10–5. The degree of dissociation of the acid at concentration of 0.2 M is
Answer» The $K_{a}$ of an acid is 3.2 $\times$ $10^{- 5}$ . The degree of dissociation of the acid at concentration of 0.2 M is

Discussion

8.	If v is the volume of one molecule of a gas under given conditions, then van der Waals constant 'b' is : (N0 = Avogadro's number)
Answer» If $v$ is the volume of one molecule of a gas under given conditions, then van der Waals constant 'b' is : ( $N_{0}$ = Avogadro's number)

Discussion

9.	When an excess of ethanol is heated with conc. H2SO4 at 413K, it undergoes ___.
Answer» When an excess of ethanol is heated with conc. $H_{2} S O_{4}$ at 413K, it undergoes ___.

Discussion

10.	Do oxidation and reduction take place simultaneously or not?
Answer» Do oxidation and reduction take place simultaneously or not?

Discussion

11.	Among the following hydrides of group 15 elements, the most stable hydride is:
Answer» Among the following hydrides of group 15 elements, the most stable hydride is:

Discussion

12.	4g of two non volatile solutes A and B are separately dissolved in 100g of a given solvent. Which of the two shows higher elevation in boiling point if molar mass of A is more than that of B?
Answer» 4g of two non volatile solutes A and B are separately dissolved in 100g of a given solvent. Which of the two shows higher elevation in boiling point if molar mass of A is more than that of B?

Discussion

13.	Molecule Hybridisation Shape A.PO−34 1.sp2 a)Distorted octahedral B.XeF6 2.sp3 b)Pyramid C.SO−23 3.sp3d c)Tetrahedral D.NO−13 4.sp3d3 d)Triangular planar The correct match is
Answer» $M o l e c u l e H y b r i d i s a t i o n S h a p e$ $A . P O_{4}^{- 3} 1. s p^{2} a) D i s t o r t e d o c t a h e d r a l$ $B . X e F_{6} 2. s p^{3} b) P y r a m i d$ $C . S O_{3}^{- 2} 3. s p^{3} d c) T e t r a h e d r a l$ $D . N O_{3}^{- 1} 4. s p^{3} d^{3} d) T r i a n g u l a r p l a n a r$ The correct match is

13.

Molecule Hybridisation Shape A.PO−34 1.sp2 a)Distorted octahedral B.XeF6 2.sp3 b)Pyramid C.SO−23 3.sp3d c)Tetrahedral D.NO−13 4.sp3d3 d)Triangular planar The correct match is

Answer»

$M o l e c u l e H y b r i d i s a t i o n S h a p e$

$A . P O_{4}^{- 3} 1. s p^{2} a) D i s t o r t e d o c t a h e d r a l$

$B . X e F_{6} 2. s p^{3} b) P y r a m i d$

$C . S O_{3}^{- 2} 3. s p^{3} d c) T e t r a h e d r a l$

$D . N O_{3}^{- 1} 4. s p^{3} d^{3} d) T r i a n g u l a r p l a n a r$

The correct match is

Discussion

14.	Which one is more electropositive and why? D2O (heavy water) or H2O
Answer» Which one is more electropositive and why? D2O (heavy water) or H2O

Discussion

15.	The sulphur dioxide obtained by the combustion of 8 g of sulphur is passed into Bromine water. The solution is then treated with barium chloride solution. The amount of barium sulphate formed is
Answer» The sulphur dioxide obtained by the combustion of 8 g of sulphur is passed into Bromine water. The solution is then treated with barium chloride solution. The amount of barium sulphate formed is

Discussion

16.	How to prepare 11th physical chemistry advanced level
Answer» How to prepare 11th physical chemistry advanced level

Discussion

17.	The rate constant of a first order reaction, whose half-life is 480 seconds, is
Answer» The rate constant of a first order reaction, whose half-life is 480 seconds, is

Discussion

18.	K3[CoF6] is high spin complex. What is the hybrid state of Co atom in this complex?
Answer» K₃[CoF₆] is high spin complex. What is the hybrid state of Co atom in this complex?

Discussion

19.	Read the statements given below and choose the correct statements. a) Sodium chloride is more soluble in heavy water than in normal water. b) Heavy water is used to study the reaction mechanism. c) Al4C3 on duterolysis gives duetero methane. d) Heavy water is more viscous than water.
Answer» Read the statements given below and choose the correct statements. a) Sodium chloride is more soluble in heavy water than in normal water. b) Heavy water is used to study the reaction mechanism. c) $A l_{4}$ $C_{3}$ on duterolysis gives duetero methane. d) Heavy water is more viscous than water.

19.

Read the statements given below and choose the correct statements. a) Sodium chloride is more soluble in heavy water than in normal water. b) Heavy water is used to study the reaction mechanism. c) Al4C3 on duterolysis gives duetero methane. d) Heavy water is more viscous than water.

Answer»

Read the statements given below and choose the correct statements.

a) Sodium chloride is more soluble in heavy water than in normal water.

b) Heavy water is used to study the reaction mechanism.

c) $A l_{4}$ $C_{3}$ on duterolysis gives duetero methane.

d) Heavy water is more viscous than water.

Discussion

20.	z for a body centred unit cell is
Answer» z for a body centred unit cell is

Discussion

21.	The general molecular formula, which represents the homologous series of alkanols is:
Answer» The general molecular formula, which represents the homologous series of alkanols is:

Discussion

22.	What does atomic radius and ionic radius really mean to you?
Answer» What does atomic radius and ionic radius really mean to you?

Discussion

23.	If a body contains n1 electrons and n2 protons, the total amount of charge on the body is
Answer» If a body contains n1 electrons and n2 protons, the total amount of charge on the body is

Discussion

24.	In which of the following reactions is phenol not formed?
Answer» In which of the following reactions is phenol not formed?

Discussion

25.	Ortho-dihydroxy benzene is
Answer» Ortho-dihydroxy benzene is

Discussion

26.	The solubility product of Mg(OH)2 at 25∘C is 1.4 × 10−11. The solubility of Mg(OH)2 in gm per litre is:
Answer» The solubility product of $M g (O H)_{2}$ at $25^{\circ} C$ is $1.4 \times 10^{- 11}$ . The solubility of $M g (O H)_{2}$ in gm per litre is:

Discussion

27.	CH3COOH+CH3CH2OH→CH3COOC2H5+H2O This reaction is called
Answer» $C H_{3} C O O H + C H_{3} C H_{2} O H \to C H_{3} C O O C_{2} H_{5} + H_{2} O$ This reaction is called

Discussion

28.	An ideal gas at 27∘C is compressed adiabatically to 827 of its original volume.If γ=53, then teh rise in temperature is
Answer» An ideal gas at $27^{\circ} C$ is compressed adiabatically to $\frac{8}{27}$ of its original volume.If $γ = \frac{5}{3}$ , then teh rise in temperature is

Discussion

29.	What is the nucleophilic substitution reaction?
Answer» What is the nucleophilic substitution reaction?

Discussion

30.	Find the total number of products. (Including stereoisomers) ___
Answer» Find the total number of products. (Including stereoisomers) ___

Discussion

31.	The optically active tartaric acid is named as D-(+)- tartaric acid because it has a positive
Answer» The optically active tartaric acid is named as D-(+)- tartaric acid because it has a positive

Discussion

32.	The correct order of ionic radius is:
Answer» The correct order of ionic radius is:

Discussion

33.	Which equation represents an example of Friedel-Craft's reaction
Answer» Which equation represents an example of Friedel-Craft's reaction

33.

Which equation represents an example of Friedel-Craft's reaction

Answer»

Which equation represents an example of Friedel-Craft's reaction

Discussion

34.	Nitrogen has the electronic configuration 1s2,2s2 2p1x 2p1y 2p1z and not 1s2,2s2 2p2x 2p1y 2p0z which is determined by
Answer» Nitrogen has the electronic configuration $1 s^{2}, 2 s^{2} 2 p_{x}^{1} 2 p_{y}^{1} 2 p_{z}^{1}$ and not $1 s^{2}, 2 s^{2} 2 p_{x}^{2} 2 p_{y}^{1} 2 p_{z}^{0}$ which is determined by

Discussion

35.	Arrange the following in increasing order of their size: Be, Ca, Ba, Sr.
Answer» Arrange the following in increasing order of their size: Be, Ca, Ba, Sr.

Discussion

36.	A system receives heat continuously at the rate of 10W. The temperature of the system becomes constant at 70∘C when the temperature of the surroundings is 30∘C. After the heater is switched off, the system cools from 50∘C to 49.9∘C in 1 min. The heat capacity of the system is
Answer» A system receives heat continuously at the rate of 10W. The temperature of the system becomes constant at $70^{\circ} C$ when the temperature of the surroundings is $30^{\circ} C$ . After the heater is switched off, the system cools from $50^{\circ} C$ to ${49.9}^{\circ} C$ in 1 min. The heat capacity of the system is

Discussion

37.	Hexafluoroferrate (III) ion is an outer orbital complex. The number of unpaired electrons present in Fe is
Answer» Hexafluoroferrate (III) ion is an outer orbital complex. The number of unpaired electrons present in Fe is

Discussion

38.	The number of possible resonance structures for CO2−3 is
Answer» The number of possible resonance structures for $C O_{3}^{2 -}$ is

Discussion

39.	When thiosulphate ion is oxidised by iodine, which one of the following ion is produced
Answer» When thiosulphate ion is oxidised by iodine, which one of the following ion is produced

39.

When thiosulphate ion is oxidised by iodine, which one of the following ion is produced

Answer»

When thiosulphate ion is oxidised by iodine, which one of the following ion is produced

Discussion

40.	The pKa values, H3PO4 are 2, 12, 7.21 and 12.67. The pH of a 0.2 M NaH2PO4 and 0.1 M Na2HPO4 is
Answer» The $p K_{a}$ values, $H_{3} P O_{4}$ are 2, 12, 7.21 and 12.67. The pH of a 0.2 $M N a H_{2} P O_{4}$ and 0.1 $M N a_{2} H P O_{4}$ is

Discussion

41.	Following the transition elements, (IE)1 drops abruptly in Ga, In and Tl. This is due to :- 1. Decrease in effective nuclear charge. 2. Increases in atomic radius. 3. Removal of an electron from the singly occupied np orbitals of higher energy than the ns-orbitals of Zn, Cd and Hg. 4. None is correct. With explanation.
Answer» Following the transition elements, (IE)1 drops abruptly in Ga, In and Tl. This is due to :- 1. Decrease in effective nuclear charge. 2. Increases in atomic radius. 3. Removal of an electron from the singly occupied np orbitals of higher energy than the ns-orbitals of Zn, Cd and Hg. 4. None is correct. With explanation.

Discussion

42.	The spectrum of He is expected to be similar to
Answer» The spectrum of He is expected to be similar to

42.

The spectrum of He is expected to be similar to

Answer»

The spectrum of He is expected to be similar to

Discussion

43.	What is the difference between bathing soap and washing soaps?
Answer» What is the difference between bathing soap and washing soaps?

Discussion

44.	Mass of sucrose C12H22O11 produced by mixing 84 g of carbon, 12 g of hydrogen and 56 lit.O2 at 1atm and 273 K according to given reaction is C(s)+H2+O2⟶C12H22O11
Answer» Mass of sucrose $C_{12} H_{22} O_{11}$ produced by mixing 84 g of carbon, 12 g of hydrogen and 56 lit. $O_{2}$ at 1atm and 273 K according to given reaction is C(s)+ $H_{2}$ + $O_{2}$ $⟶$ $C_{12} H_{22} O_{11}$

44.

Mass of sucrose C12H22O11 produced by mixing 84 g of carbon, 12 g of hydrogen and 56 lit.O2 at 1atm and 273 K according to given reaction is C(s)+H2+O2⟶C12H22O11

Answer»

Mass of sucrose $C_{12} H_{22} O_{11}$ produced by mixing 84 g of carbon, 12 g of hydrogen and 56 lit. $O_{2}$ at 1atm and 273 K according to given reaction is

C(s)+ $H_{2}$ + $O_{2}$ $⟶$ $C_{12} H_{22} O_{11}$

Discussion

45.	Which of the following are responsible for Van der Waals forces?
Answer» Which of the following are responsible for Van der Waals forces?

Discussion

46.	The gaseous reaction : A(g)+nB(g)⇌mC(g) is represented by the following curves what is the value of n+m
Answer» The gaseous reaction : $A (g) + n B (g) ⇌ m C (g)$ is represented by the following curves what is the value of $n + m$

Discussion

47.	In CICH2C=CCH2Br, why is bromine given more priority than chlorine?
Answer» In CICH₂C=CCH₂Br, why is bromine given more priority than chlorine?

Discussion

48.	The mol fraction of benzene in a solution in Toluene is 0.50. calculate the weight percent of benzene in solution.
Answer» The mol fraction of benzene in a solution in Toluene is 0.50. calculate the weight percent of benzene in solution.

Discussion

49.	Gibberellin with 19 carbons is
Answer» Gibberellin with 19 carbons is

Discussion

50.	Can I say that standard electrode potential of any metal electrode is equal to the potential difference or e.m.f between that metal electrode and hydrogen electrode at standard conditions ?
Answer» Can I say that standard electrode potential of any metal electrode is equal to the potential difference or e.m.f between that metal electrode and hydrogen electrode at standard conditions ?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

A system undergoes a process in which system releases 200 J heat and work done by the surroundings is 300 J. Change in internal energy of the system is

20 dm3 of SO2 diffuses through a porous partition in 60 s. What volume (in dm3) of O2 will diffuse under similar conditions in 30 s?

Sulphur is pharamagnetic in nature at its vapour state I miss question

Major product (A) is :

The change in entropy of 2 moles of an ideal gas upon isothermal expansion at 243.6 K from 20 litre until the pressure becomes 1 atm, is

If z is the inter-nuclear axis, the π moleculer orbitals are formed by overlapping of –

The Ka of an acid is 3.2 × 10–5. The degree of dissociation of the acid at concentration of 0.2 M is

If v is the volume of one molecule of a gas under given conditions, then van der Waals constant 'b' is : (N0 = Avogadro's number)

When an excess of ethanol is heated with conc. H2SO4 at 413K, it undergoes ___.

Do oxidation and reduction take place simultaneously or not?

Among the following hydrides of group 15 elements, the most stable hydride is:

4g of two non volatile solutes A and B are separately dissolved in 100g of a given solvent. Which of the two shows higher elevation in boiling point if molar mass of A is more than that of B?

Molecule Hybridisation Shape A.PO−34 1.sp2 a)Distorted octahedral B.XeF6 2.sp3 b)Pyramid C.SO−23 3.sp3d c)Tetrahedral D.NO−13 4.sp3d3 d)Triangular planar The correct match is

Which one is more electropositive and why? D2O (heavy water) or H2O

The sulphur dioxide obtained by the combustion of 8 g of sulphur is passed into Bromine water. The solution is then treated with barium chloride solution. The amount of barium sulphate formed is

How to prepare 11th physical chemistry advanced level

The rate constant of a first order reaction, whose half-life is 480 seconds, is

K3[CoF6] is high spin complex. What is the hybrid state of Co atom in this complex?

Read the statements given below and choose the correct statements. a) Sodium chloride is more soluble in heavy water than in normal water. b) Heavy water is used to study the reaction mechanism. c) Al4C3 on duterolysis gives duetero methane. d) Heavy water is more viscous than water.

z for a body centred unit cell is

The general molecular formula, which represents the homologous series of alkanols is:

What does atomic radius and ionic radius really mean to you?

If a body contains n1 electrons and n2 protons, the total amount of charge on the body is

In which of the following reactions is phenol not formed?

Ortho-dihydroxy benzene is

The solubility product of Mg(OH)2 at 25∘C is 1.4 × 10−11. The solubility of Mg(OH)2 in gm per litre is:

CH3COOH+CH3CH2OH→CH3COOC2H5+H2O This reaction is called

An ideal gas at 27∘C is compressed adiabatically to 827 of its original volume.If γ=53, then teh rise in temperature is

What is the nucleophilic substitution reaction?

Find the total number of products. (Including stereoisomers) ___

The optically active tartaric acid is named as D-(+)- tartaric acid because it has a positive

The correct order of ionic radius is:

Which equation represents an example of Friedel-Craft's reaction

Nitrogen has the electronic configuration 1s2,2s2 2p1x 2p1y 2p1z and not 1s2,2s2 2p2x 2p1y 2p0z which is determined by

Arrange the following in increasing order of their size: Be, Ca, Ba, Sr.

A system receives heat continuously at the rate of 10W. The temperature of the system becomes constant at 70∘C when the temperature of the surroundings is 30∘C. After the heater is switched off, the system cools from 50∘C to 49.9∘C in 1 min. The heat capacity of the system is

Hexafluoroferrate (III) ion is an outer orbital complex. The number of unpaired electrons present in Fe is

The number of possible resonance structures for CO2−3 is

When thiosulphate ion is oxidised by iodine, which one of the following ion is produced

The pKa values, H3PO4 are 2, 12, 7.21 and 12.67. The pH of a 0.2 M NaH2PO4 and 0.1 M Na2HPO4 is

The spectrum of He is expected to be similar to

What is the difference between bathing soap and washing soaps?

Mass of sucrose C12H22O11 produced by mixing 84 g of carbon, 12 g of hydrogen and 56 lit.O2 at 1atm and 273 K according to given reaction is C(s)+H2+O2⟶C12H22O11

Which of the following are responsible for Van der Waals forces?

The gaseous reaction : A(g)+nB(g)⇌mC(g) is represented by the following curves what is the value of n+m

In CICH2C=CCH2Br, why is bromine given more priority than chlorine?

The mol fraction of benzene in a solution in Toluene is 0.50. calculate the weight percent of benzene in solution.

Gibberellin with 19 carbons is

Can I say that standard electrode potential of any metal electrode is equal to the potential difference or e.m.f between that metal electrode and hydrogen electrode at standard conditions ?