46295 + Interview Questions in Chemistry

1.	The solution A and B are 0.1 and 0.2 molar in a substance. If 100 mL of A are mixed with 25 mL of B and there is no change in Volume on mixing then the final molarity of the solution is:
Answer» The solution A and B are 0.1 and 0.2 molar in a substance. If 100 mL of A are mixed with 25 mL of B and there is no change in Volume on mixing then the final molarity of the solution is:

Discussion

2.	PbC2O4 Δ→ A+CO2+CO Identify A.
Answer» $P b C_{2} O_{4} Δ \to A + C O_{2} + C O$ Identify A.

2.

PbC2O4 Δ→ A+CO2+CO Identify A.

Answer»

$P b C_{2} O_{4} Δ \to A + C O_{2} + C O$

Identify A.

Discussion

3.	The vapours of phosphine gas at 27∘C and 3 bar pressure has a density of:
Answer» The vapours of phosphine gas at $27^{\circ} C$ and 3 bar pressure has a density of:

Discussion

4.	Which of the following pairs are both polysaccharides?
Answer» Which of the following pairs are both polysaccharides?

Discussion

5.	Which graph represents zero order reaction [A(g)→B(g)?
Answer» Which graph represents zero order reaction $[A (g) \to B (g)$ ?

Discussion

6.	The metallic powder that is used in Ullmann synthesis of diphenyl is
Answer» The metallic powder that is used in Ullmann synthesis of diphenyl is

Discussion

7.	The hybridization state of carbon atoms in the product formed by the reaction of ethyl chloride with aqueous potassium hydroxide is [EAMCET 1997]
Answer» The hybridization state of carbon atoms in the product formed by the reaction of ethyl chloride with aqueous potassium hydroxide is [EAMCET 1997]

7.

The hybridization state of carbon atoms in the product formed by the reaction of ethyl chloride with aqueous potassium hydroxide is [EAMCET 1997]

Answer»

The hybridization state of carbon atoms in the product formed by the reaction of ethyl chloride with aqueous potassium hydroxide is

[EAMCET 1997]

Discussion

8.	The nature of solution obtained when Mohr’s salt is hydrolysed
Answer» The nature of solution obtained when Mohr’s salt is hydrolysed

Discussion

9.	A compound formed by elements X & Y, Crystallizes in a cubic structure, where X is at the corners of the cube and Y is at six face centers. If side length is 5 Å, the density of the solid is (atomic weight of X and Y as 120 and 210 respectively).
Answer» A compound formed by elements X & Y, Crystallizes in a cubic structure, where X is at the corners of the cube and Y is at six face centers. If side length is 5 Å, the density of the solid is (atomic weight of X and Y as 120 and 210 respectively).

Discussion

10.	Which of the following has been arranged in the order of decreasing dipole moments?
Answer» Which of the following has been arranged in the order of decreasing dipole moments?

Discussion

11.	Number of orbitals represented by n=3,l=2 and m=+2 is:
Answer» Number of orbitals represented by $n = 3, l = 2$ and $m = + 2$ is:

Discussion

12.	Among the following, the correct order of acidity is
Answer» Among the following, the correct order of acidity is

Discussion

13.	At what temperature (in ∘C) is the root mean square velocity of O2 gas at 300 K equal to the most probable velocity of Ne (Given 273 K = 0∘C)?
Answer» At what temperature (in $^{\circ} C$ ) is the root mean square velocity of $O_{2}$ gas at $300 K$ equal to the most probable velocity of $N e$ (Given 273 K = 0 $^{\circ} C$ )?

Discussion

14.	N2+3H2⇌2NH3, starting with one mole of nitrogen and 3 moles of hydrogen, at equilibrium 50% of each had reacted. If the equilibrium pressure is P, the partial pressure of hydrogen at equilibrium would be:
Answer» $N_{2} + 3 H_{2} ⇌ 2 N H_{3}$ , starting with one mole of nitrogen and 3 moles of hydrogen, at equilibrium 50% of each had reacted. If the equilibrium pressure is $P$ , the partial pressure of hydrogen at equilibrium would be:

Discussion

15.	At 25∘C, consider 1 L of two solutions as following: Solution A : Contains 1 mol CH3COONa+0.5 mol HCl Solution B : Contains 1 mol CH3COONa+0.5 mol CH3COOH If Ka(CH3COOH)=10−5 then ratio of [H+ (aq.)] of solution A to that of solution B is, (Given: log 1=0 and log 2=0.3,log(5×10−6=−5.3)
Answer» At $25^{\circ} C,$ consider $1 L$ of two solutions as following: Solution A : Contains $1 m o l C H_{3} C O O N a + 0.5 m o l H C l$ Solution B : Contains $1 m o l C H_{3} C O O N a + 0.5 m o l C H_{3} C O O H$ If $K_{a} (C H_{3} C O O H) = 10^{- 5}$ then ratio of [ $H^{+}$ (aq.)] of solution A to that of solution B is, (Given: $l o g 1 = 0 a n d l o g 2 = 0.3, l o g (5 \times 10^{- 6} = - 5.3$ )

Discussion

16.	The energy (in joules) emitted when electrons of 1.0 g atom of hydrogen undergo transition giving the spectral line of lowest energy in the visible region of its atomic spectrum is x×104 J (RH=1.1×107m−1;c=3×108 ms−1;h=6.6×10−34 J−s);NA=6×1023 (Report your answer upto two decimal only)
Answer» The energy (in joules) emitted when electrons of $1.0 g$ atom of hydrogen undergo transition giving the spectral line of lowest energy in the visible region of its atomic spectrum is $x \times 10^{4} J$ $(R_{H} = 1.1 \times 10^{7} m^{- 1}; c = 3 \times 10^{8} m s^{- 1}; h = 6.6 \times 10^{- 34} J - s); N_{A} = 6 \times 10^{23}$ (Report your answer upto two decimal only)

Discussion

17.	Most basic compound in the following is:
Answer» Most basic compound in the following is:

Discussion

18.	Among the following oxides, which has the maximum lattice energy?
Answer» Among the following oxides, which has the maximum lattice energy?

Discussion

19.	With regard to the gaseous state of matter which of the following statements are correct? (a) The complete order of molecules (b) Complete disorder of molecules (c) Random motion of molecules (d) Fixed position of molecules
Answer» With regard to the gaseous state of matter which of the following statements are correct? (a) The complete order of molecules (b) Complete disorder of molecules (c) Random motion of molecules (d) Fixed position of molecules

19.

With regard to the gaseous state of matter which of the following statements are correct? (a) The complete order of molecules (b) Complete disorder of molecules (c) Random motion of molecules (d) Fixed position of molecules

Answer»

With regard to the gaseous state of matter which of the following statements are correct?

(a) The complete order of molecules (b) Complete disorder of molecules

(c) Random motion of molecules (d) Fixed position of molecules

Discussion

20.	The number of valence electrons in the elements A and B are 4 and 6 respectively. The most probable compound formed from A and B is:
Answer» The number of valence electrons in the elements A and B are 4 and 6 respectively. The most probable compound formed from A and B is:

Discussion

21.	An organic compound of molar mass greater than 100g mol−1 contains only C, H & N. The mass of C is six times the mass of H, while the sum of mass of C & H is 1.5 times the mass of N.Then Least molecular mass28 is
Answer» An organic compound of molar mass greater than $100 g m o l^{- 1}$ contains only $C$ , $H$ & $N$ . The mass of $C$ is six times the mass of $H$ , while the sum of mass of $C$ & $H$ is 1.5 times the mass of $N$ .Then $\frac{Least molecular mass}{28}$ is

Discussion

22.	Explain coagulation and cataphoresis of colloids.
Answer» Explain coagulation and cataphoresis of colloids.

Discussion

23.	Find the volume strength of 0.8N H2O2 solution.
Answer» Find the volume strength of $0.8 N H_{2} O_{2}$ solution.

Discussion

24.	Calculate the percentage of free SO3 in an oleum that is labelled 118% H2SO4
Answer» Calculate the percentage of free $S O_{3}$ in an oleum that is labelled $118 % H_{2} S O_{4}$

Discussion

25.	PCHCl3/KOH←−−−−−−−−ΔH3CCH2 NH2\|CHCH3NaNO2−−−−−→dil. HClQ Select the correct option.
Answer» $P C H C l_{3} / K O H \leftarrow ------- - Δ H_{3} C C H_{2} N H_{2} \| C H C H_{3} N a N O_{2} - ---- \to d i l . H C l Q$ Select the correct option.

Discussion

26.	What is the relationship between wave length and momentum of the particle?
Answer» What is the relationship between wave length and momentum of the particle?

Discussion

27.	Th e energy required to break one mol of Cl-Cl bonds in Cl2 is 242 kJmol-1. The longest wavelength of light capable of breaking a single Cl-Cl bond is A. 594nm B.640nm C. 700nm D.494nm
Answer» Th e energy required to break one mol of Cl-Cl bonds in Cl₂ is 242 kJmol^-1. The longest wavelength of light capable of breaking a single Cl-Cl bond is A. 594nm B.640nm C. 700nm D.494nm

27.

Th e energy required to break one mol of Cl-Cl bonds in Cl2 is 242 kJmol-1. The longest wavelength of light capable of breaking a single Cl-Cl bond is A. 594nm B.640nm C. 700nm D.494nm

Answer»

Th e energy required to break one mol of Cl-Cl bonds in Cl₂ is 242 kJmol^-1. The longest wavelength of light capable of breaking a single Cl-Cl bond is

A. 594nm

B.640nm

C. 700nm

D.494nm

Discussion

28.	The reagent employed to distinguish between phenol and salicylic acid is
Answer» The reagent employed to distinguish between phenol and salicylic acid is

Discussion

29.	Chemical name of -NR3+, -SO2R, -NH3+, -OAr, -SR, -OR ,SO2Ar ,-SR2+
Answer» Chemical name of -NR₃+, -SO₂R, -NH₃+, -OAr, -SR, -OR ,SO₂Ar ,-SR₂+

Discussion

30.	Is there any solid that have hardness similar to that of diamond?
Answer» Is there any solid that have hardness similar to that of diamond?

Discussion

31.	Good Afternoon sir/mam Q.. What are the proper Significance of Raoult's Law ?
Answer» Good Afternoon sir/mam Q.. What are the proper Significance of Raoult's Law ?

31.

Good Afternoon sir/mam Q.. What are the proper Significance of Raoult's Law ?

Answer»

Good Afternoon sir/mam

Q.. What are the proper Significance of Raoult's Law ?

Discussion

32.	When adsorption and absorption occur simultaneously the phenomenon is called ___ .
Answer» When adsorption and absorption occur simultaneously the phenomenon is called ___ .

Discussion

33.	The number of elements in the set S={(a,b):2a2+3b2=35;a,b∈Z}, where Z is the set of all integers, is
Answer» The number of elements in the set $S = {(a, b) : 2 a^{2} + 3 b^{2} = 35; a, b \in Z},$ where $Z$ is the set of all integers, is

Discussion

34.	Optical rotations of some compounds alongwith their structures are given below which of them have D configuration. (a) I, II, III (b) II, III (c) I, II (d) III
Answer» Optical rotations of some compounds alongwith their structures are given below which of them have D configuration. (a) I, II, III (b) II, III (c) I, II (d) III

Discussion

35.	In the disproportionation reaction: H3PO2→PH3+H3PO3 The equivalent mass of H3PO2 is (m = molecular mass of H3PO2)
Answer» In the disproportionation reaction: $H_{3} P O_{2} \to P H_{3} + H_{3} P O_{3}$ The equivalent mass of $H_{3} P O_{2}$ is (m = molecular mass of $H_{3} P O_{2})$

Discussion

36.	The volume of a closed reaction vessel in which the equilibrium - 2SO2(g)+O2(g)⇌2SO3(g) sets is halved, Now -
Answer» The volume of a closed reaction vessel in which the equilibrium - $2 S O_{2} (g) + O_{2} (g) ⇌ 2 S O_{3} (g)$ sets is halved, Now -

36.

The volume of a closed reaction vessel in which the equilibrium - 2SO2(g)+O2(g)⇌2SO3(g) sets is halved, Now -

Answer»

The volume of a closed reaction vessel in which the equilibrium -

$2 S O_{2} (g) + O_{2} (g) ⇌ 2 S O_{3} (g)$ sets is halved, Now -

Discussion

37.	In metal deficiency defect
Answer» In metal deficiency defect

Discussion

38.	What are the limitations of Mendeleev's periodic table? [5 MARKS]
Answer» What are the limitations of Mendeleev's periodic table? [5 MARKS]

Discussion

39.	Which of the following has shortest C-C bond length?
Answer» Which of the following has shortest C-C bond length?

Discussion

40.	H3BO3 is:
Answer» $H_{3} B O_{3}$ is:

Discussion

41.	0.004 M Na2SO4 is isotonic with 0.01 M glucose. Degree of dissociation of Na2SO4 is
Answer» 0.004 $M N a_{2} S O_{4}$ is isotonic with 0.01 M glucose. Degree of dissociation of $N a_{2} S O_{4}$ is

Discussion

42.	The phenomenon responsible for spherical shape of liquid drops is:
Answer» The phenomenon responsible for spherical shape of liquid drops is:

Discussion

43.	Which is the structural isomer of
Answer» Which is the structural isomer of

43.

Which is the structural isomer of

Answer»

Which is the structural isomer of

Discussion

44.	Number of oxygen atoms in peroxide linkage in the product formed by reaction of K2Cr2O7 with H2O2 in acidic medium is
Answer» Number of oxygen atoms in peroxide linkage in the product formed by reaction of $K_{2} C r_{2} O_{7}$ with $H_{2} O_{2}$ in acidic medium is

Discussion

45.	If λ0 and λ be the threshold wavelength and the wavelength of incident light, the velocity of photo-electrons ejected from metal surface is:
Answer» If $λ_{0}$ and $λ$ be the threshold wavelength and the wavelength of incident light, the velocity of photo-electrons ejected from metal surface is:

Discussion

46.	Column 1: Name and formula of compound Column Column 2: Name of the reaction. Column 3: Major product of reaction. The only correct combination in which the reaction intermediate is Carbene:
Answer» Column 1: Name and formula of compound Column Column 2: Name of the reaction. Column 3: Major product of reaction. The only correct combination in which the reaction intermediate is Carbene:

46.

Column 1: Name and formula of compound Column Column 2: Name of the reaction. Column 3: Major product of reaction. The only correct combination in which the reaction intermediate is Carbene:

Answer»

Column 1: Name and formula of compound Column

Column 2: Name of the reaction.

Column 3: Major product of reaction.

The only correct combination in which the reaction intermediate is Carbene:

Discussion

47.	The order of the oxidation state of the phosphorous atom in H3PO2,H3PO4,H3PO3, and H4P2O6 is
Answer» The order of the oxidation state of the phosphorous atom in $H_{3} P O_{2}, H_{3} P O_{4}, H_{3} P O_{3}$ , and $H_{4} P_{2} O_{6}$ is

Discussion

48.	A balloon of diameter 20 m weighs 100 Kg. Calculate its payload if it is filled with helium at 1.0 atm and 27∘C. Density of air is 1.2 Kg m−3(R=0.082 dm3 atm K−1 mole−1)
Answer» A balloon of diameter $20 m$ weighs $100 K g$ . Calculate its payload if it is filled with helium at $1.0 a t m$ and $27^{\circ} C$ . Density of air is $1.2 K g m^{- 3} (R = 0.082 d m^{3} atm K^{- 1} m o l e^{- 1})$

Discussion

49.	Which of the following hydroxide is soluble in NH4Cl Solution.
Answer» Which of the following hydroxide is soluble in $N H_{4} C l$ Solution.

Discussion

50.	Ionic radii of which ions is same
Answer» Ionic radii of which ions is same

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

The solution A and B are 0.1 and 0.2 molar in a substance. If 100 mL of A are mixed with 25 mL of B and there is no change in Volume on mixing then the final molarity of the solution is:

PbC2O4 Δ→ A+CO2+CO Identify A.

The vapours of phosphine gas at 27∘C and 3 bar pressure has a density of:

Which of the following pairs are both polysaccharides?

Which graph represents zero order reaction [A(g)→B(g)?

The metallic powder that is used in Ullmann synthesis of diphenyl is

The hybridization state of carbon atoms in the product formed by the reaction of ethyl chloride with aqueous potassium hydroxide is [EAMCET 1997]

The nature of solution obtained when Mohr’s salt is hydrolysed

A compound formed by elements X &amp; Y, Crystallizes in a cubic structure, where X is at the corners of the cube and Y is at six face centers. If side length is 5 Å, the density of the solid is (atomic weight of X and Y as 120 and 210 respectively).

Which of the following has been arranged in the order of decreasing dipole moments?

Number of orbitals represented by n=3,l=2 and m=+2 is:

Among the following, the correct order of acidity is

At what temperature (in ∘C) is the root mean square velocity of O2 gas at 300 K equal to the most probable velocity of Ne (Given 273 K = 0∘C)?

N2+3H2⇌2NH3, starting with one mole of nitrogen and 3 moles of hydrogen, at equilibrium 50% of each had reacted. If the equilibrium pressure is P, the partial pressure of hydrogen at equilibrium would be:

At 25∘C, consider 1 L of two solutions as following: Solution A : Contains 1 mol CH3COONa+0.5 mol HCl Solution B : Contains 1 mol CH3COONa+0.5 mol CH3COOH If Ka(CH3COOH)=10−5 then ratio of [H+ (aq.)] of solution A to that of solution B is, (Given: log 1=0 and log 2=0.3,log(5×10−6=−5.3)

The energy (in joules) emitted when electrons of 1.0 g atom of hydrogen undergo transition giving the spectral line of lowest energy in the visible region of its atomic spectrum is x×104 J (RH=1.1×107m−1;c=3×108 ms−1;h=6.6×10−34 J−s);NA=6×1023 (Report your answer upto two decimal only)

Most basic compound in the following is:

Among the following oxides, which has the maximum lattice energy?

With regard to the gaseous state of matter which of the following statements are correct? (a) The complete order of molecules (b) Complete disorder of molecules (c) Random motion of molecules (d) Fixed position of molecules

The number of valence electrons in the elements A and B are 4 and 6 respectively. The most probable compound formed from A and B is:

An organic compound of molar mass greater than 100g mol−1 contains only C, H & N. The mass of C is six times the mass of H, while the sum of mass of C & H is 1.5 times the mass of N.Then Least molecular mass28 is

Explain coagulation and cataphoresis of colloids.

Find the volume strength of 0.8N H2O2 solution.

Calculate the percentage of free SO3 in an oleum that is labelled 118% H2SO4

PCHCl3/KOH←−−−−−−−−ΔH3CCH2 NH2|CHCH3NaNO2−−−−−→dil. HClQ Select the correct option.

What is the relationship between wave length and momentum of the particle?

Th e energy required to break one mol of Cl-Cl bonds in Cl2 is 242 kJmol-1​​​​​​. The longest wavelength of light capable of breaking a single Cl-Cl bond ​​​​​​ is A. 594nm B.640nm C. 700nm D.494nm

The reagent employed to distinguish between phenol and salicylic acid is

Chemical name of -NR3+, -SO2R, -NH3+, -OAr, -SR, -OR ,SO2Ar ,-SR2+

Is there any solid that have hardness similar to that of diamond?

Good Afternoon sir/mam Q.. What are the proper Significance of Raoult's Law ?

When adsorption and absorption occur simultaneously the phenomenon is called ___ .

The number of elements in the set S={(a,b):2a2+3b2=35;a,b∈Z}, where Z is the set of all integers, is

Optical rotations of some compounds alongwith their structures are given below which of them have D configuration. (a) I, II, III (b) II, III (c) I, II (d) III

In the disproportionation reaction: H3PO2→PH3+H3PO3 The equivalent mass of H3PO2 is (m = molecular mass of H3PO2)

The volume of a closed reaction vessel in which the equilibrium - 2SO2(g)+O2(g)⇌2SO3(g) sets is halved, Now -

In metal deficiency defect

What are the limitations of Mendeleev's periodic table? [5 MARKS]

Which of the following has shortest C-C bond length?

H3BO3 is:

0.004 M Na2SO4 is isotonic with 0.01 M glucose. Degree of dissociation of Na2SO4 is

The phenomenon responsible for spherical shape of liquid drops is:

Which is the structural isomer of

Number of oxygen atoms in peroxide linkage in the product formed by reaction of K2Cr2O7 with H2O2 in acidic medium is

If λ0 and λ be the threshold wavelength and the wavelength of incident light, the velocity of photo-electrons ejected from metal surface is:

Column 1: Name and formula of compound Column Column 2: Name of the reaction. Column 3: Major product of reaction. The only correct combination in which the reaction intermediate is Carbene:

The order of the oxidation state of the phosphorous atom in H3PO2,H3PO4,H3PO3, and H4P2O6 is

A balloon of diameter 20 m weighs 100 Kg. Calculate its payload if it is filled with helium at 1.0 atm and 27∘C. Density of air is 1.2 Kg m−3(R=0.082 dm3 atm K−1 mole−1)

Which of the following hydroxide is soluble in NH4Cl Solution.

Ionic radii of which ions is same

A compound formed by elements X & Y, Crystallizes in a cubic structure, where X is at the corners of the cube and Y is at six face centers. If side length is 5 Å, the density of the solid is (atomic weight of X and Y as 120 and 210 respectively).

Th e energy required to break one mol of Cl-Cl bonds in Cl2 is 242 kJmol-1. The longest wavelength of light capable of breaking a single Cl-Cl bond is A. 594nm B.640nm C. 700nm D.494nm