46295 + Interview Questions in Chemistry

1.	What is meant by polarization of a cell ? How does it occur and what are it's affects ?
Answer» What is meant by polarization of a cell ? How does it occur and what are it's affects ?

Discussion

2.	According to Chargaff's rule, which one is correct?
Answer» According to Chargaff's rule, which one is correct?

Discussion

3.	Which of the following reaction will give an alkyne?
Answer» Which of the following reaction will give an alkyne?

Discussion

4.	Explain what happens when boric acid is heated.
Answer» Explain what happens when boric acid is heated.

Discussion

5.	Density of a gas is found to be 5.46g/dm3 at 27∘C at 2 bar pressure. What will be its density at STP?
Answer» Density of a gas is found to be $5.46 g / d m^{3}$ at $27^{\circ} C$ at 2 bar pressure. What will be its density at STP?

Discussion

6.	The angle between the edges b and c of the unit cell is denoted as
Answer» The angle between the edges b and c of the unit cell is denoted as

Discussion

7.	Among the following, the species that act as the weakest base is:
Answer» Among the following, the species that act as the weakest base is:

Discussion

8.	The value of ΔfH⊖ for NH3 is -91.8kJ mol−1. Calculate enthalpy change for the following reaction. 2NH3(g)→N2(g)+3H2(g)
Answer» The value of $Δ_{f} H^{⊖}$ for $N H_{3}$ is -91.8kJ $m o l^{- 1}$ . Calculate enthalpy change for the following reaction. $2 N H_{3} (g) \to N_{2} (g) + 3 H_{2} (g)$

Discussion

9.	XYZ Power Ltd., set-up a factory for manufacturing solar lanterns in a remote village as there was no reliable supply of electricity in rural areas. The revenue earned by the company was sufficient to cover the costs and the risks. The demand of lanterns was increasing day-by-day, so the company decided to increase production to generate higher sales. For this, they decided to employ people from the nearby villages as very few job opportunites were available in that area. The company also decided to open schools and cretches for the children of its employees. (i) Identify and explain the objective of management discussed above. (ii) State any two values which the company wanted to communicate to the society.
Answer» XYZ Power Ltd., set-up a factory for manufacturing solar lanterns in a remote village as there was no reliable supply of electricity in rural areas. The revenue earned by the company was sufficient to cover the costs and the risks. The demand of lanterns was increasing day-by-day, so the company decided to increase production to generate higher sales. For this, they decided to employ people from the nearby villages as very few job opportunites were available in that area. The company also decided to open schools and cretches for the children of its employees. (i) Identify and explain the objective of management discussed above. (ii) State any two values which the company wanted to communicate to the society.

9.

XYZ Power Ltd., set-up a factory for manufacturing solar lanterns in a remote village as there was no reliable supply of electricity in rural areas. The revenue earned by the company was sufficient to cover the costs and the risks. The demand of lanterns was increasing day-by-day, so the company decided to increase production to generate higher sales. For this, they decided to employ people from the nearby villages as very few job opportunites were available in that area. The company also decided to open schools and cretches for the children of its employees. (i) Identify and explain the objective of management discussed above. (ii) State any two values which the company wanted to communicate to the society.

Answer»

XYZ Power Ltd., set-up a factory for manufacturing solar lanterns in a remote village as there was no reliable supply of electricity in rural areas.

The revenue earned by the company was sufficient to cover the costs and the risks. The demand of lanterns was increasing day-by-day, so the company decided to increase production to generate higher sales. For this, they decided to employ people from the nearby villages as very few job opportunites were available in that area. The company also decided to open schools and cretches for the children of its employees.

(i) Identify and explain the objective of management discussed above.

(ii) State any two values which the company wanted to communicate to the society.

Discussion

10.	What are the types of functional groups?undefinedundefinedundefinedundefined
Answer» What are the types of functional groups? undefined undefined undefined undefined

Discussion

11.	CH3COOH △−−−→P2O5X. Identify X
Answer» $C H_{3} C O O H △ - -- \to P_{2} O_{5} X .$ Identify X

Discussion

12.	How is the presence of electrons related to malleability of a substance
Answer» How is the presence of electrons related to malleability of a substance

Discussion

13.	What is zeroth law?
Answer» What is zeroth law?

Discussion

14.	A compound contains equal masses of the element A, B and C. The atomic mass of A, B and C are 20, 40 and 60 respectively. The empirical formula of the compound is:
Answer» A compound contains equal masses of the element A, B and C. The atomic mass of A, B and C are 20, 40 and 60 respectively. The empirical formula of the compound is:

Discussion

15.	Column-I-Compound, Column-II-Oxidation state, Column-III-Type of linkage Column 1Column 2Column 3(I)Na2S2O3(i)+5(P)S−O−S(II)Na2S4O6(ii)−2(Q)S−S(III)H2S2O7(iii)+6(R)−(O−O)−(IV)H2S2O8(iv)+4(S)S=S The only correct combination in which the hybridization of one of the S atom is Sp2.
Answer» Column-I-Compound, Column-II-Oxidation state, Column-III-Type of linkage $\begin{matrix} C o l u m n 1 & C o l u m n 2 & C o l u m n 3 (I) & N a_{2} S_{2} O_{3} & (i) & + 5 & (P) & S - O - S (I I) & N a_{2} S_{4} O_{6} & (i i) & - 2 & (Q) & S - S (I I I) & H_{2} S_{2} O_{7} & (i i i) & + 6 & (R) & - (O - O) - (I V) & H_{2} S_{2} O_{8} & (i v) & + 4 & (S) & S = S \end{matrix}$ The only correct combination in which the hybridization of one of the S atom is $S p^{2}$ .

15.

Column-I-Compound, Column-II-Oxidation state, Column-III-Type of linkage Column 1Column 2Column 3(I)Na2S2O3(i)+5(P)S−O−S(II)Na2S4O6(ii)−2(Q)S−S(III)H2S2O7(iii)+6(R)−(O−O)−(IV)H2S2O8(iv)+4(S)S=S The only correct combination in which the hybridization of one of the S atom is Sp2.

Answer»

Column-I-Compound, Column-II-Oxidation state, Column-III-Type of linkage

$\begin{matrix} C o l u m n 1 & C o l u m n 2 & C o l u m n 3 (I) & N a_{2} S_{2} O_{3} & (i) & + 5 & (P) & S - O - S (I I) & N a_{2} S_{4} O_{6} & (i i) & - 2 & (Q) & S - S (I I I) & H_{2} S_{2} O_{7} & (i i i) & + 6 & (R) & - (O - O) - (I V) & H_{2} S_{2} O_{8} & (i v) & + 4 & (S) & S = S \end{matrix}$

The only correct combination in which the hybridization of one of the S atom is $S p^{2}$ .

Discussion

16.	A compound contains 6.4% by mass of oxygen. What is the minimum molar mass of the compound?
Answer» A compound contains $6.4 %$ by mass of oxygen. What is the minimum molar mass of the compound?

Discussion

17.	How do enzymes help a substrate to be attacked by the reagent effectively?
Answer» How do enzymes help a substrate to be attacked by the reagent effectively?

Discussion

18.	Acid catalysed hydration of alkenes give alcohol according Markownikoff’s rule. Alcohols are also prepared from alkenes by oxy mercuration-de mercuration and hydro boration oxidation. The Major product (x) of the following reaction is:
Answer» Acid catalysed hydration of alkenes give alcohol according Markownikoff’s rule. Alcohols are also prepared from alkenes by oxy mercuration-de mercuration and hydro boration oxidation. The Major product (x) of the following reaction is:

Discussion

19.	1.25 g of a metal (M) reacts with oxygen completely to produce 1.68 g of metal oxide. The empirical formula of the metal oxide is [molar mass of M and O are 69.7gmol–1 and 16.0 gmol–1, respectively]
Answer» 1.25 g of a metal (M) reacts with oxygen completely to produce 1.68 g of metal oxide. The empirical formula of the metal oxide is [molar mass of M and O are 69.7 $g m o l^{- 1}$ and 16.0 $g m o l^{- 1}$ , respectively]

Discussion

20.	A wind with speed 40 m/s blows parallel to the roof of a house. The area of the roof is 250 m2, assuming that the pressure inside the house is atmospheric pressure, the force exerted by the wind on the roof and the direction of the force will be : (Pair=1.2kg/m3).
Answer» A wind with speed 40 m/s blows parallel to the roof of a house. The area of the roof is 250 $m^{2}$ , assuming that the pressure inside the house is atmospheric pressure, the force exerted by the wind on the roof and the direction of the force will be : $(P_{a i r} = 1.2 k g / m^{3})$ .

20.

A wind with speed 40 m/s blows parallel to the roof of a house. The area of the roof is 250 m2, assuming that the pressure inside the house is atmospheric pressure, the force exerted by the wind on the roof and the direction of the force will be : (Pair=1.2kg/m3).

Answer»

A wind with speed 40 m/s blows parallel to the roof of a house. The area of the roof is 250 $m^{2}$ , assuming that the pressure inside the house is atmospheric pressure, the force exerted by the wind on the roof and the direction of the force will be :

$(P_{a i r} = 1.2 k g / m^{3})$ .

Discussion

21.	The pH of the 0.10 M hydrocyanic acid solutions is 5.2. What will be the value of Ka for hydrocyanic acid ?
Answer» The pH of the $0.10 M$ hydrocyanic acid solutions is 5.2. What will be the value of $K_{a}$ for hydrocyanic acid ?

Discussion

22.	Pick out the unsaturated fatty acid from the following [KCET 2004; MHCET 2002]
Answer» Pick out the unsaturated fatty acid from the following [KCET 2004; MHCET 2002]

22.

Pick out the unsaturated fatty acid from the following [KCET 2004; MHCET 2002]

Answer»

Pick out the unsaturated fatty acid from the following

[KCET 2004; MHCET 2002]

Discussion

23.	If 500 mL of a 5M solution is diluted to 1500 mL, what will be the molarity of the solution obtained ? (a) 1.5 M (b) 1.66 M (c) 0.017 M (d) 1.59 M
Answer» If 500 mL of a 5M solution is diluted to 1500 mL, what will be the molarity of the solution obtained ? (a) 1.5 M (b) 1.66 M (c) 0.017 M (d) 1.59 M

23.

If 500 mL of a 5M solution is diluted to 1500 mL, what will be the molarity of the solution obtained ? (a) 1.5 M (b) 1.66 M (c) 0.017 M (d) 1.59 M

Answer»

If 500 mL of a 5M solution is diluted to 1500 mL, what will be the molarity of the solution obtained ?

(a) 1.5 M (b) 1.66 M (c) 0.017 M (d) 1.59 M

Discussion

24.	Elements with high electronegativity are generally
Answer» Elements with high electronegativity are generally

Discussion

25.	Which one of the following will produce a primary alcohol by reacting with CH3Mgl [MP PET 1991]
Answer» Which one of the following will produce a primary alcohol by reacting with CH₃Mgl [MP PET 1991]

Discussion

26.	When sodium bicarbonate is heated, 1.806×1024 molecules of water is obtained. Find the volume of CO2(g) obtained at STP. 2NaHCO3Δ−→Na2CO3+CO2+H2O
Answer» When sodium bicarbonate is heated, $1.806 \times 10^{24}$ molecules of water is obtained. Find the volume of $C O_{2} (g)$ obtained at STP. $2 N a H C O_{3} Δ - \to N a_{2} C O_{3} + C O_{2} + H_{2} O$

Discussion

27.	exercise 2.5
Answer» exercise 2.5

Discussion

28.	Number of bond pairs and lone pairs present respectively on the central atom of xenon difluoride are
Answer» Number of bond pairs and lone pairs present respectively on the central atom of xenon difluoride are

Discussion

29.	Calculate the molarity of 11.7% by mass of NaCl in water. The density of the solution is 1.60 g/mL. (Given, atomic mass Na=23 u, Cl=35.5 u)
Answer» Calculate the molarity of $11.7 %$ by mass of $N a C l$ in water. The density of the solution is $1.60 g / m L$ . (Given, atomic mass $N a = 23 u, C l = 35.5 u$ )

Discussion

30.	The equilibrium constant of the reaction is 10^8 times the ionic product of water at 25°c Hence (ka) of weak acid will be
Answer» The equilibrium constant of the reaction is 10^8 times the ionic product of water at 25°c Hence (ka) of weak acid will be

Discussion

31.	For an ideal gas (CPCv=γ); of molar mass M, its specific heat capacity at constant volume is:
Answer» For an ideal gas $(\frac{C_{P}}{C_{v}} = γ)$ ; of molar mass M, its specific heat capacity at constant volume is:

Discussion

32.	The volume of water that must be added to a mixture of 250 ml of 0.6 M HCl and 750 ml of 0.2 M HCl to obtain 0.25 M solution of HCl is
Answer» The volume of water that must be added to a mixture of 250 ml of 0.6 M $H C l$ and 750 ml of 0.2 M $H C l$ to obtain 0.25 M solution of $H C l$ is

Discussion

33.	XeF6 dissolves in anhydrous HF to give a good conducting solution which contains:
Answer» $X e F_{6}$ dissolves in anhydrous HF to give a good conducting solution which contains:

Discussion

34.	Calculate normality of the solution if 5.3 g of solid Na2CO3 is dissolved to make 250 mL of the solution.
Answer» Calculate normality of the solution if $5.3 g$ of solid $N a_{2} C O_{3}$ is dissolved to make $250 m L$ of the solution.

Discussion

35.	Is there any formula to know how many isomers does any molecular formula has ?
Answer» Is there any formula to know how many isomers does any molecular formula has ?

Discussion

36.	Light of wavelength 300 × 10−9m strikes a metal a metal surface with photoelectric work function of 2.13 eV. The kinetic energy of photoelectron is
Answer» Light of wavelength $300 \times 10^{- 9} m$ strikes a metal a metal surface with photoelectric work function of $2.13 e V$ . The kinetic energy of photoelectron is

Discussion

37.	Which of the following sets of quantum numbers is correct for an electron in 4f orbital?
Answer» Which of the following sets of quantum numbers is correct for an electron in 4f orbital?

Discussion

38.	why are the elements of s block more bigger than d block elements?
Answer» why are the elements of s block more bigger than d block elements?

Discussion

39.	The first ionization enthalpy of Ca is greater than that of potassium because for Ca
Answer» The first ionization enthalpy of Ca is greater than that of potassium because for Ca

Discussion

40.	How many bonds are equivalent in the dichromate dianion? ___
Answer» How many bonds are equivalent in the dichromate dianion? ___

Discussion

41.	An electron has a speed of 500 m/s with an uncertainty of 0.02% What is the uncertainty in position?
Answer» An electron has a speed of 500 m/s with an uncertainty of 0.02% What is the uncertainty in position?

Discussion

42.	15 ml of a gaseous hydrocarbon required 75 ml of O2 for complete combustion and it produced 45 ml of CO2 (All volumes are measured under identical conditions).The hydrocarbon is a)C5H12 b)C3H6 c)C4H10 d)C3H8
Answer» 15 ml of a gaseous hydrocarbon required 75 ml of O2 for complete combustion and it produced 45 ml of CO2 (All volumes are measured under identical conditions).The hydrocarbon is a)C5H12 b)C3H6 c)C4H10 d)C3H8

42.

15 ml of a gaseous hydrocarbon required 75 ml of O2 for complete combustion and it produced 45 ml of CO2 (All volumes are measured under identical conditions).The hydrocarbon is a)C5H12 b)C3H6 c)C4H10 d)C3H8

Answer»

15 ml of a gaseous hydrocarbon required 75 ml of O2 for complete combustion and it produced 45 ml of CO2 (All volumes are measured under identical conditions).The hydrocarbon is

a)C5H12 b)C3H6 c)C4H10 d)C3H8

Discussion

43.	A box of 1 L capacity is divided into two equal compartments by a thin partition which are filled with 2g H2 and 16g CH4 respectively. The pressure in each compartment is recorded as P atm. The total pressure when partition is removed will be?
Answer» A box of 1 L capacity is divided into two equal compartments by a thin partition which are filled with 2g H2 and 16g CH4 respectively. The pressure in each compartment is recorded as P atm. The total pressure when partition is removed will be?

Discussion

44.	name the gases liberated at anode and cathode respectively when an aqueous solution of Nacl is electrolysed
Answer» name the gases liberated at anode and cathode respectively when an aqueous solution of Nacl is electrolysed

Discussion

45.	Ultraviolet radiation is incident on two photosensitive materials having work function fi 1 and fi2 ( fi1>fi2). In which case the kinetic energy of the photo electrons will be greater and why
Answer» Ultraviolet radiation is incident on two photosensitive materials having work function fi 1 and fi2 ( fi1>fi2). In which case the kinetic energy of the photo electrons will be greater and why

Discussion

46.	What will be the volume of 0.1 M H2SO4 solution required to neutralize 40 mL of 0.1 M KOH solution ?
Answer» What will be the volume of $0.1 M H_{2} S O_{4}$ solution required to neutralize $40 m L$ of $0.1 M K O H$ solution ?

Discussion

47.	If f (x) is defined on [0,1] as f (x)={x if x belongs to Q and 1-x if x does not belongs to Q } where f( f (x) )=
Answer» If f (x) is defined on [0,1] as f (x)={x if x belongs to Q and 1-x if x does not belongs to Q } where f( f (x) )=

Discussion

48.	Maximum oxidation state (+8) is exhibited by
Answer» Maximum oxidation state (+8) is exhibited by

Discussion

49.	The buffers of X and Y of pH=4 and ph=6 respectively are prepared from acid HA and the salts of NaA both the buffers are 0.5M in HA.What would be the pH of the solution obtained by mixing equal volumes of two buffer. (KHA = 10-5)
Answer» The buffers of X and Y of pH=4 and ph=6 respectively are prepared from acid HA and the salts of NaA both the buffers are 0.5M in HA.What would be the pH of the solution obtained by mixing equal volumes of two buffer. (K_HA = 10^-5)

Discussion

50.	Acetic acid is the principal ingredient in vinegar that's why it tastes sour. At equilibrium. a solution contains [CH3CO2H]=0.0787 M and [H3O+]=[CH3CO−2]=0.00118 M. what is the values of Ka for acetic acid?
Answer» Acetic acid is the principal ingredient in vinegar that's why it tastes sour. At equilibrium. a solution contains $[C H_{3} C O_{2} H] = 0.0787 M$ and $[H_{3} O^{+}] = [C H_{3} C O_{2}^{-}] = 0.00118 M .$ what is the values of $K_{a}$ for acetic acid?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

What is meant by polarization of a cell ? How does it occur and what are it's affects ?

According to Chargaff's rule, which one is correct?

Which of the following reaction will give an alkyne?

Explain what happens when boric acid is heated.

Density of a gas is found to be 5.46g/dm3 at 27∘C at 2 bar pressure. What will be its density at STP?

The angle between the edges b and c of the unit cell is denoted as

Among the following, the species that act as the weakest base is:

The value of ΔfH⊖ for NH3 is -91.8kJ mol−1. Calculate enthalpy change for the following reaction. 2NH3(g)→N2(g)+3H2(g)

What are the types of functional groups?undefinedundefinedundefinedundefined

CH3COOH △−−−→P2O5X. Identify X

How is the presence of electrons related to malleability of a substance

What is zeroth law?

A compound contains equal masses of the element A, B and C. The atomic mass of A, B and C are 20, 40 and 60 respectively. The empirical formula of the compound is:

Column-I-Compound, Column-II-Oxidation state, Column-III-Type of linkage Column 1Column 2Column 3(I)Na2S2O3(i)+5(P)S−O−S(II)Na2S4O6(ii)−2(Q)S−S(III)H2S2O7(iii)+6(R)−(O−O)−(IV)H2S2O8(iv)+4(S)S=S The only correct combination in which the hybridization of one of the S atom is Sp2.

A compound contains 6.4% by mass of oxygen. What is the minimum molar mass of the compound?

How do enzymes help a substrate to be attacked by the reagent effectively?

Acid catalysed hydration of alkenes give alcohol according Markownikoff’s rule. Alcohols are also prepared from alkenes by oxy mercuration-de mercuration and hydro boration oxidation. The Major product (x) of the following reaction is:

1.25 g of a metal (M) reacts with oxygen completely to produce 1.68 g of metal oxide. The empirical formula of the metal oxide is [molar mass of M and O are 69.7gmol–1 and 16.0 gmol–1, respectively]

A wind with speed 40 m/s blows parallel to the roof of a house. The area of the roof is 250 m2, assuming that the pressure inside the house is atmospheric pressure, the force exerted by the wind on the roof and the direction of the force will be : (Pair=1.2kg/m3).

The pH of the 0.10 M hydrocyanic acid solutions is 5.2. What will be the value of Ka for hydrocyanic acid ?

Pick out the unsaturated fatty acid from the following [KCET 2004; MHCET 2002]

If 500 mL of a 5M solution is diluted to 1500 mL, what will be the molarity of the solution obtained ? (a) 1.5 M (b) 1.66 M (c) 0.017 M (d) 1.59 M

Elements with high electronegativity are generally

Which one of the following will produce a primary alcohol by reacting with CH3Mgl [MP PET 1991]

When sodium bicarbonate is heated, 1.806×1024 molecules of water is obtained. Find the volume of CO2(g) obtained at STP. 2NaHCO3Δ−→Na2CO3+CO2+H2O

exercise 2.5

Number of bond pairs and lone pairs present respectively on the central atom of xenon difluoride are

Calculate the molarity of 11.7% by mass of NaCl in water. The density of the solution is 1.60 g/mL. (Given, atomic mass Na=23 u, Cl=35.5 u)

The equilibrium constant of the reaction is 10^8 times the ionic product of water at 25°c Hence (ka) of weak acid will be

For an ideal gas (CPCv=γ); of molar mass M, its specific heat capacity at constant volume is:

The volume of water that must be added to a mixture of 250 ml of 0.6 M HCl and 750 ml of 0.2 M HCl to obtain 0.25 M solution of HCl is

XeF6 dissolves in anhydrous HF to give a good conducting solution which contains:

Calculate normality of the solution if 5.3 g of solid Na2CO3 is dissolved to make 250 mL of the solution.

Is there any formula to know how many isomers does any molecular formula has ?

Light of wavelength 300 × 10−9m strikes a metal a metal surface with photoelectric work function of 2.13 eV. The kinetic energy of photoelectron is

Which of the following sets of quantum numbers is correct for an electron in 4f orbital?

why are the elements of s block more bigger than d block elements?

The first ionization enthalpy of Ca is greater than that of potassium because for Ca

How many bonds are equivalent in the dichromate dianion? ___

An electron has a speed of 500 m/s with an uncertainty of 0.02% What is the uncertainty in position?

15 ml of a gaseous hydrocarbon required 75 ml of O2 for complete combustion and it produced 45 ml of CO2 (All volumes are measured under identical conditions).The hydrocarbon is a)C5H12 b)C3H6 c)C4H10 d)C3H8

A box of 1 L capacity is divided into two equal compartments by a thin partition which are filled with 2g H2 and 16g CH4 respectively. The pressure in each compartment is recorded as P atm. The total pressure when partition is removed will be?

name the gases liberated at anode and cathode respectively when an aqueous solution of Nacl is electrolysed

Ultraviolet radiation is incident on two photosensitive materials having work function fi 1 and fi2 ( fi1>fi2). In which case the kinetic energy of the photo electrons will be greater and why

What will be the volume of 0.1 M H2SO4​ solution required to neutralize 40 mL of 0.1 M KOH solution ?

If f (x) is defined on [0,1] as f (x)={x if x belongs to Q and 1-x if x does not belongs to Q } where f( f (x) )=

Maximum oxidation state (+8) is exhibited by

The buffers of X and Y of pH=4 and ph=6 respectively are prepared from acid HA and the salts of NaA both the buffers are 0.5M in HA.What would be the pH of the solution obtained by mixing equal volumes of two buffer. (KHA = 10-5)

Acetic acid is the principal ingredient in vinegar that's why it tastes sour. At equilibrium. a solution contains [CH3CO2H]=0.0787 M and [H3O+]=[CH3CO−2]=0.00118 M. what is the values of Ka for acetic acid?

What will be the volume of 0.1 M H2SO4 solution required to neutralize 40 mL of 0.1 M KOH solution ?