46295 + Interview Questions in Chemistry

1.	A chemical reaction was carried out at 300K and 280K. The rate conatants were found to be K1 and K2 respectively. Then 1)K2 = 4 K1 2)K2 =2 K1 3)K2 = 0.5 K1 4)K2 = 0.25 K1
Answer» A chemical reaction was carried out at 300K and 280K. The rate conatants were found to be K₁ and K₂ respectively. Then 1)K₂ = 4 K₁ 2)K₂ =2 K₁ 3)K₂ = 0.5 K₁ 4)K₂ = 0.25 K₁

1.

A chemical reaction was carried out at 300K and 280K. The rate conatants were found to be K1 and K2 respectively. Then 1)K2 = 4 K1 2)K2 =2 K1 3)K2 = 0.5 K1 4)K2 = 0.25 K1

Answer»

A chemical reaction was carried out at 300K and 280K. The rate conatants were found to be K₁ and K₂ respectively. Then

1)K₂ = 4 K₁

2)K₂ =2 K₁

3)K₂ = 0.5 K₁

4)K₂ = 0.25 K₁

Discussion

2.	Which of the following statements is true about Ca(OH)2 (a) it is used in the prreparation of bleacing powder (b) It is a light blue solid (c) It does nnot possess disinfectant property (d) It is used in the manufacture fo cement
Answer» Which of the following statements is true about $C a (O H)_{2}$ (a) it is used in the prreparation of bleacing powder (b) It is a light blue solid (c) It does nnot possess disinfectant property (d) It is used in the manufacture fo cement

Discussion

3.	Good evening sir/ma'am I have a small doubt.actually I can't find video related to 3D representation like Fischer,wedge dash rule etc.in byjus videos can you please tell me under which topic it is there?? Thanks
Answer» Good evening sir/ma'am I have a small doubt.actually I can't find video related to 3D representation like Fischer,wedge dash rule etc.in byjus videos can you please tell me under which topic it is there?? Thanks

3.

Good evening sir/ma'am I have a small doubt.actually I can't find video related to 3D representation like Fischer,wedge dash rule etc.in byjus videos can you please tell me under which topic it is there?? Thanks

Answer»

Good evening sir/ma'am

I have a small doubt.actually I can't find video related to 3D representation like Fischer,wedge dash rule etc.in byjus videos can you please tell me under which topic it is there??

Thanks

Discussion

4.	Which pair has permanent dipole moment for both the members?
Answer» Which pair has permanent dipole moment for both the members?

Discussion

5.	Which of the following statements is correct about the reaction given below ? 4Fe(s)+302(g)→2Fe203(g) (a) Total mass of iron and oxygen in reactants = total mass of iron and oxygen in product therefore it follows law of conservation of mass (b) Total mass of reactants = total mass of product, therefore, law of multiple proportions is followed (c) Amount of Fe2O3 can be increased by taking any one of the reactants (iron or oxygen) in excess (d) Amount of Fe2O3 produced will decrease if the amount of any one of the reactants (iron or oxygen) is taken in excess
Answer» Which of the following statements is correct about the reaction given below ? $4 F e (s) + 30_{2} (g) \to 2 F e_{2} 0_{3} (g)$ (a) Total mass of iron and oxygen in reactants = total mass of iron and oxygen in product therefore it follows law of conservation of mass (b) Total mass of reactants = total mass of product, therefore, law of multiple proportions is followed (c) Amount of $F e_{2} O_{3}$ can be increased by taking any one of the reactants (iron or oxygen) in excess (d) Amount of $F e_{2} O_{3}$ produced will decrease if the amount of any one of the reactants (iron or oxygen) is taken in excess

5.

Which of the following statements is correct about the reaction given below ? 4Fe(s)+302(g)→2Fe203(g) (a) Total mass of iron and oxygen in reactants = total mass of iron and oxygen in product therefore it follows law of conservation of mass (b) Total mass of reactants = total mass of product, therefore, law of multiple proportions is followed (c) Amount of Fe2O3 can be increased by taking any one of the reactants (iron or oxygen) in excess (d) Amount of Fe2O3 produced will decrease if the amount of any one of the reactants (iron or oxygen) is taken in excess

Answer»

Which of the following statements is correct about the reaction given below ?

$4 F e (s) + 30_{2} (g) \to 2 F e_{2} 0_{3} (g)$

(a) Total mass of iron and oxygen in reactants = total mass of iron and oxygen in product therefore it follows law of conservation of mass

(b) Total mass of reactants = total mass of product, therefore, law of multiple proportions is followed

(c) Amount of $F e_{2} O_{3}$ can be increased by taking any one of the reactants (iron or oxygen) in excess

(d) Amount of $F e_{2} O_{3}$ produced will decrease if the amount of any one of the reactants (iron or oxygen) is taken in excess

Discussion

6.	The bond lengths of C-X bond in alkyl halide increases in the order:
Answer» The bond lengths of C-X bond in alkyl halide increases in the order:

Discussion

7.	The product of acid catalysed hydration of 2-phenyl propene is:
Answer» The product of acid catalysed hydration of $2-phenyl propene$ is:

Discussion

8.	Molar ionic conductivity of a bivalent electrolyte are 57 and 73. The molar conductivity of the solution will be
Answer» Molar ionic conductivity of a bivalent electrolyte are 57 and 73. The molar conductivity of the solution will be

Discussion

9.	What is kp and kc
Answer» What is kp and kc

Discussion

10.	Correct order of acidity of the given compounds is:
Answer» Correct order of acidity of the given compounds is:

Discussion

11.	What volume of CO2 at STP (atm) will be produced when 1 g of CaCO3 reacts with an excess of dilute HCl?
Answer» What volume of $C O_{2}$ at STP (atm) will be produced when $1 g$ of $C a C O_{3}$ reacts with an excess of dilute $H C l$ ?

Discussion

12.	1 mole of He gas has 6.022×10x atoms. x is _____
Answer» 1 mole of He gas has 6.022 $\times$ 10x atoms. x is _____

Discussion

13.	What is the main use of hydrocarbons?
Answer» What is the main use of hydrocarbons?

Discussion

14.	Unlike Cr(III) , Mn (II) ,Fe(III) and the subsequent other M(II) ions of the 3d series of elements, the 4d and the 5d series metals generally do not form stable cationic species.Why?
Answer» Unlike Cr(III) , Mn (II) ,Fe(III) and the subsequent other M(II) ions of the 3d series of elements, the 4d and the 5d series metals generally do not form stable cationic species.Why?

Discussion

15.	Halogens are diatomic or monoatomic? On solving the hybridization part , we should consider halogens as diatomic or monoatomic? Hybridization=1\2(V+M-C+A) V=No.of valence electrons M=No.of monoatomic atoms C=No.of cations A=No.of anions
Answer» Halogens are diatomic or monoatomic? On solving the hybridization part , we should consider halogens as diatomic or monoatomic? Hybridization=1\2(V+M-C+A) V=No.of valence electrons M=No.of monoatomic atoms C=No.of cations A=No.of anions

Discussion

16.	2 g of hydrogen is sealed in a vessel of volume 0.02 m3 and is maintained at 300 K. Calculate the pressure in the vessel.
Answer» 2 g of hydrogen is sealed in a vessel of volume 0.02 $m^{3}$ and is maintained at 300 K. Calculate the pressure in the vessel.

Discussion

17.	Among the following, the optically active compound is
Answer» Among the following, the optically active compound is

Discussion

18.	The relative charges on an electron, a proton and a neutron respectively are:
Answer» The relative charges on an electron, a proton and a neutron respectively are:

Discussion

19.	Which one of the following is not a unit of pressure
Answer» Which one of the following is not a unit of pressure

Discussion

20.	What is the weight of CaO required to remove hardness of 106 L of water containing 1.62 g of Ca(HCO3)2 in 1 L ? The reaction is , CaO+Ca(HCO3)2→2CaCO3+H2O
Answer» What is the weight of $C a O$ required to remove hardness of $10^{6} L$ of water containing $1.62 g o f C a (H C O_{3})_{2}$ in $1 L$ ? The reaction is , $C a O + C a (H C O_{3})_{2} \to 2 C a C O_{3} + H_{2} O$

Discussion

21.	According to VBT, the shape of [CoF6]-3 is:
Answer» According to VBT, the shape of [CoF₆]^-3 is:

Discussion

22.	Define the following modes of expressing the concentration of a solution? Which of these modes are independent of temperature and why? (a) w/w (mass percentage) Define the following modes of expressing the concentration of a solution? Which of these modes are independent of temperature and why? (b) V/V (volume percentage) Define the following modes of expressing the concentration of a solution? Which of these modes are independent of temperature and why? (c) w/V (mass by volume percentage) Define the following modes of expressing the concentration of a solution? Which of these modes are independent of temperature and why? (d) ppm (parts per million) Define the following modes of expressing the concentration of a solution? Which of these modes are independent of temperature and why? (e) x (mole fraction) Define the following modes of expressing the concentration of a solution? Which of these modes are independent of temperature and why? (f) M (molarity) Define the following modes of expressing the concentration of a solution? Which of these modes are independent of temperature and why? (g) m (molality)
Answer» Define the following modes of expressing the concentration of a solution? Which of these modes are independent of temperature and why? (a) w/w (mass percentage) Define the following modes of expressing the concentration of a solution? Which of these modes are independent of temperature and why? (b) V/V (volume percentage) Define the following modes of expressing the concentration of a solution? Which of these modes are independent of temperature and why? (c) w/V (mass by volume percentage) Define the following modes of expressing the concentration of a solution? Which of these modes are independent of temperature and why? (d) ppm (parts per million) Define the following modes of expressing the concentration of a solution? Which of these modes are independent of temperature and why? (e) x (mole fraction) Define the following modes of expressing the concentration of a solution? Which of these modes are independent of temperature and why? (f) M (molarity) Define the following modes of expressing the concentration of a solution? Which of these modes are independent of temperature and why? (g) m (molality)

22.

Define the following modes of expressing the concentration of a solution? Which of these modes are independent of temperature and why? (a) w/w (mass percentage) Define the following modes of expressing the concentration of a solution? Which of these modes are independent of temperature and why? (b) V/V (volume percentage) Define the following modes of expressing the concentration of a solution? Which of these modes are independent of temperature and why? (c) w/V (mass by volume percentage) Define the following modes of expressing the concentration of a solution? Which of these modes are independent of temperature and why? (d) ppm (parts per million) Define the following modes of expressing the concentration of a solution? Which of these modes are independent of temperature and why? (e) x (mole fraction) Define the following modes of expressing the concentration of a solution? Which of these modes are independent of temperature and why? (f) M (molarity) Define the following modes of expressing the concentration of a solution? Which of these modes are independent of temperature and why? (g) m (molality)

Answer»

Define the following modes of expressing the concentration of a solution? Which of these modes are independent of temperature and why?
(a) w/w (mass percentage)

Define the following modes of expressing the concentration of a solution? Which of these modes are independent of temperature and why?
(b) V/V (volume percentage)

Define the following modes of expressing the concentration of a solution? Which of these modes are independent of temperature and why?
(c) w/V (mass by volume percentage)

Define the following modes of expressing the concentration of a solution? Which of these modes are independent of temperature and why?
(d) ppm (parts per million)

Define the following modes of expressing the concentration of a solution? Which of these modes are independent of temperature and why?
(e) x (mole fraction)

Define the following modes of expressing the concentration of a solution? Which of these modes are independent of temperature and why?
(f) M (molarity)

Define the following modes of expressing the concentration of a solution? Which of these modes are independent of temperature and why?
(g) m (molality)

Discussion

23.	Which one of the following types of drugs reduces fever?
Answer» Which one of the following types of drugs reduces fever?

Discussion

24.	Which method is used for refining Zr and Ti? Explain with equation.
Answer» Which method is used for refining Zr and Ti? Explain with equation.

Discussion

25.	Which of the following carbohydrate is an example of an oligosaccharide?
Answer» Which of the following carbohydrate is an example of an oligosaccharide?

Discussion

26.	Which of the following defects is also known as dislocation defect ? (a) Frebkel defect (b) Schottky defect (c)Non-stoichiometric defect (d)Simple interstitial defect
Answer» Which of the following defects is also known as dislocation defect ? (a) Frebkel defect (b) Schottky defect (c)Non-stoichiometric defect (d)Simple interstitial defect

26.

Which of the following defects is also known as dislocation defect ? (a) Frebkel defect (b) Schottky defect (c)Non-stoichiometric defect (d)Simple interstitial defect

Answer»

Which of the following defects is also known as dislocation defect ?

(a) Frebkel defect (b) Schottky defect

(c)Non-stoichiometric defect (d)Simple interstitial defect

Discussion

27.	Among the following oxides which is least acidic
Answer» Among the following oxides which is least acidic

Discussion

28.	Which of the following are diastereomers?
Answer» Which of the following are diastereomers?

Discussion

29.	How many grams of oxygen (O2) are required to completely react with 0.20 g of hydrogen (H2) to yield water (H2O)? (molar mass H2=2 g/mol,O2=32 g/mol)
Answer» How many grams of oxygen $(O_{2})$ are required to completely react with $0.20 g$ of hydrogen $(H_{2})$ to yield water $(H_{2} O)$ ? (molar mass $H_{2} = 2 g/mol, O_{2} = 32 g/mol$ )

Discussion

30.	Metal which cannot be refined by electrolytic refining process is
Answer» Metal which cannot be refined by electrolytic refining process is

Discussion

31.	ASSERTION: n-Pentane and n-Hexane belong to a homologous series. REASON: n-Pentane and n-Hexane belong to the same class of hydrocarbons and they differ by a - CH2 - group.
Answer» ASSERTION: n-Pentane and n-Hexane belong to a homologous series. REASON: n-Pentane and n-Hexane belong to the same class of hydrocarbons and they differ by a - $C H_{2}$ - group.

31.

ASSERTION: n-Pentane and n-Hexane belong to a homologous series. REASON: n-Pentane and n-Hexane belong to the same class of hydrocarbons and they differ by a - CH2 - group.

Answer»

ASSERTION: n-Pentane and n-Hexane belong to a homologous series.

REASON: n-Pentane and n-Hexane belong to the same class of hydrocarbons and they differ by a - $C H_{2}$ - group.

Discussion

32.	The pH of a 0.02 M NH4Cl solution will be: [Given: Kb(NH4OH)=10−5 and log2=0.301]
Answer» The $p H$ of a $0.02 M N H_{4} C l$ solution will be: [Given: $K_{b} (N H_{4} O H) = 10^{- 5}$ and $log 2 = 0.301$ ]

Discussion

33.	A ion with the mass number 56contain 3 units positive charge and 30.4% more neutrons than the electrons. Assign symbol.
Answer» A ion with the mass number 56contain 3 units positive charge and 30.4% more neutrons than the electrons. Assign symbol.

Discussion

34.	Which of the following halides is the least stable?
Answer» Which of the following halides is the least stable?

Discussion

35.	Which of the following explains the particle like nature?
Answer» Which of the following explains the particle like nature?

Discussion

36.	A gaseous mixture of three gases A, B and C has a pressure of 10atm. The total number of moles of all gases is 10. The partial pressure of A and B are 3 and 1 atm respectively. If C has a molecular weight of 2, then find the weight of C in grams present in the mixture.
Answer» A gaseous mixture of three gases A, B and C has a pressure of 10atm. The total number of moles of all gases is 10. The partial pressure of A and B are 3 and 1 atm respectively. If C has a molecular weight of 2, then find the weight of C in grams present in the mixture.

Discussion

37.	can ions exist as gases or can they be only in aqueous state?
Answer» can ions exist as gases or can they be only in aqueous state?

Discussion

38.	Total number of tertiary amines formed with the molecular formula C5H13N is:
Answer» Total number of tertiary amines formed with the molecular formula $C_{5} H_{13} N$ is:

Discussion

39.	Which is most acidic oxide ?
Answer» Which is most acidic oxide ?

Discussion

40.	The number of positional isomers of C5H11 are:
Answer» The number of positional isomers of C₅H₁₁ are:

Discussion

41.	Upon heating with Cu2S, the reagents that give copper metal is/are
Answer» Upon heating with $C u_{2} S$ , the reagents that give copper metal is/are

Discussion

42.	The number of lone pairs of electrons on SF4, CF4 and XeF4 are:
Answer» The number of lone pairs of electrons on SF₄, CF₄ and XeF₄are:

Discussion

43.	Which one of the following molecules is formed by p−p overlapping?
Answer» Which one of the following molecules is formed by $p - p$ overlapping?

Discussion

44.	One mole ofN2H4 loses 10 mol of electrons to form a new compound Y. Assuming that all nitrogen appear in the new compound, what is the oxidation state ofN2 in Y ? (There is no change in the oxidation state of hydrogen)
Answer» One mole of $N_{2} H_{4}$ loses 10 mol of electrons to form a new compound Y. Assuming that all nitrogen appear in the new compound, what is the oxidation state of $N_{2}$ in Y ? (There is no change in the oxidation state of hydrogen)

44.

One mole ofN2H4 loses 10 mol of electrons to form a new compound Y. Assuming that all nitrogen appear in the new compound, what is the oxidation state ofN2 in Y ? (There is no change in the oxidation state of hydrogen)

Answer»

One mole of $N_{2} H_{4}$ loses 10 mol of electrons to form a new compound Y. Assuming that all nitrogen appear in the new compound, what is the oxidation state of $N_{2}$ in Y ? (There is no change in the oxidation state of hydrogen)

Discussion

45.	The structure of 2-(3-oxobutyl) cyclohexanone is :
Answer» The structure of 2-(3-oxobutyl) cyclohexanone is :

Discussion

46.	4s orbital has _____ nodes
Answer» 4s orbital has _____ nodes

Discussion

47.	List various types of isomerism possible for coordination compounds, giving an example of each.
Answer» List various types of isomerism possible for coordination compounds, giving an example of each.

Discussion

48.	Which of the following reactions will yield 2,2-dibromopropane as the major product?
Answer» Which of the following reactions will yield 2,2-dibromopropane as the major product?

Discussion

49.	If the Zeff of cubes a, b and c is x, y and z respectively, find xyz. (For instance if x = 2, y = 3, z = 5, xyz = 235) a) b) c) ___
Answer» If the $Z_{e f f}$ of cubes a, b and c is x, y and z respectively, find xyz. (For instance if x = 2, y = 3, z = 5, xyz = 235) a) b) c) ___

49.

If the Zeff of cubes a, b and c is x, y and z respectively, find xyz. (For instance if x = 2, y = 3, z = 5, xyz = 235) a) b) c) ___

Answer»

If the $Z_{e f f}$ of cubes a, b and c is x, y and z respectively, find xyz. (For instance if x = 2, y = 3, z = 5, xyz = 235)

a)

b)

c)

___

Discussion

50.	At a low pressure, the curves of gas (A) adsorbed by a unit mass of a solid adsorbent (x/m vs P) at three different temperatures Tx ,Ty and Tz that have slopes 0.57 , 1 and 1.73 respectively. Which one of the following is correct?
Answer» At a low pressure, the curves of gas (A) adsorbed by a unit mass of a solid adsorbent ( $x / m v s P$ ) at three different temperatures $T_{x}, T_{y} a n d T_{z}$ that have slopes 0.57 , 1 and 1.73 respectively. Which one of the following is correct?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

A chemical reaction was carried out at 300K and 280K. The rate conatants were found to be K1 and K2 respectively. Then 1)K2 = 4 K1 2)K2 =2 K1 3)K2 = 0.5 K1 4)K2 = 0.25 K1

Which of the following statements is true about Ca(OH)2 (a) it is used in the prreparation of bleacing powder (b) It is a light blue solid (c) It does nnot possess disinfectant property (d) It is used in the manufacture fo cement

Good evening sir/ma'am I have a small doubt.actually I can't find video related to 3D representation like Fischer,wedge dash rule etc.in byjus videos can you please tell me under which topic it is there?? Thanks

Which pair has permanent dipole moment for both the members?

The bond lengths of C-X bond in alkyl halide increases in the order:

The product of acid catalysed hydration of 2-phenyl propene is:

Molar ionic conductivity of a bivalent electrolyte are 57 and 73. The molar conductivity of the solution will be

What is kp and kc

Correct order of acidity of the given compounds is:

What volume of CO2 at STP (atm) will be produced when 1 g of CaCO3 reacts with an excess of dilute HCl?

1 mole of He gas has 6.022×10x atoms. x is _____

What is the main use of hydrocarbons?

Unlike Cr(III) , Mn (II) ,Fe(III) and the subsequent other M(II) ions of the 3d series of elements, the 4d and the 5d series metals generally do not form stable cationic species.Why?

Halogens are diatomic or monoatomic? On solving the hybridization part , we should consider halogens as diatomic or monoatomic? Hybridization=1\2(V+M-C+A) V=No.of valence electrons M=No.of monoatomic atoms C=No.of cations A=No.of anions

2 g of hydrogen is sealed in a vessel of volume 0.02 m3 and is maintained at 300 K. Calculate the pressure in the vessel.

Among the following, the optically active compound is

The relative charges on an electron, a proton and a neutron respectively are:

Which one of the following is not a unit of pressure

What is the weight of CaO required to remove hardness of 106 L of water containing 1.62 g of Ca(HCO3)2 in 1 L ? The reaction is , CaO+Ca(HCO3)2→2CaCO3+H2O

According to VBT, the shape of [CoF6]-3 is:

Which one of the following types of drugs reduces fever?

Which method is used for refining Zr and Ti? Explain with equation.

Which of the following carbohydrate is an example of an oligosaccharide?

Which of the following defects is also known as dislocation defect ? (a) Frebkel defect (b) Schottky defect (c)Non-stoichiometric defect (d)Simple interstitial defect

Among the following oxides which is least acidic

Which of the following are diastereomers?

How many grams of oxygen (O2) are required to completely react with 0.20 g of hydrogen (H2) to yield water (H2O)? (molar mass H2=2 g/mol,O2=32 g/mol)

Metal which cannot be refined by electrolytic refining process is

ASSERTION: n-Pentane and n-Hexane belong to a homologous series. REASON: n-Pentane and n-Hexane belong to the same class of hydrocarbons and they differ by a - CH2 - group.

The pH of a 0.02 M NH4Cl solution will be: [Given: Kb(NH4OH)=10−5 and log2=0.301]

A ion with the mass number 56contain 3 units positive charge and 30.4% more neutrons than the electrons. Assign symbol.

Which of the following halides is the least stable?

Which of the following explains the particle like nature?

A gaseous mixture of three gases A, B and C has a pressure of 10atm. The total number of moles of all gases is 10. The partial pressure of A and B are 3 and 1 atm respectively. If C has a molecular weight of 2, then find the weight of C in grams present in the mixture.

can ions exist as gases or can they be only in aqueous state?

Total number of tertiary amines formed with the molecular formula C5H13N is:

Which is most acidic oxide ?

The number of positional isomers of C5H11 are:

Upon heating with Cu2S, the reagents that give copper metal is/are

The number of lone pairs of electrons on SF4, CF4 and XeF4 are:

Which one of the following molecules is formed by p−p overlapping?

One mole ofN2H4 loses 10 mol of electrons to form a new compound Y. Assuming that all nitrogen appear in the new compound, what is the oxidation state ofN2 in Y ? (There is no change in the oxidation state of hydrogen)

The structure of 2-(3-oxobutyl) cyclohexanone is :

4s orbital has _____ nodes

List various types of isomerism possible for coordination compounds, giving an example of each.

Which of the following reactions will yield 2,2-dibromopropane as the major product?

If the Zeff of cubes a, b and c is x, y and z respectively, find xyz. (For instance if x = 2, y = 3, z = 5, xyz = 235) a) b) c) ___

At a low pressure, the curves of gas (A) adsorbed by a unit mass of a solid adsorbent (x/m vs P) at three different temperatures Tx ,Ty and Tz that have slopes 0.57 , 1 and 1.73 respectively. Which one of the following is correct?