46295 + Interview Questions in Chemistry

1.	What is the pH of a 1.0 M solution of acetic acid? To what volume of one litre of this solution be diluted so that the pH of resulting solution will be twice the original value? Given Ka=1.8 ×10−5, log10 4.2426×10−3=2.3724
Answer» What is the pH of a 1.0 M solution of acetic acid? To what volume of one litre of this solution be diluted so that the pH of resulting solution will be twice the original value? Given $K_{a}$ =1.8 $\times 10^{- 5}, l o g_{10} 4.2426 \times 10^{- 3} = 2.3724$

Discussion

2.	The dissociation energy of H2 is 430.53 kJ mol−1. If hydrogen is dissociated by illumination with radiation of wavelength 253.7 nm, the fraction of the radiant energy which will be converted into kinetic energy is given by
Answer» The dissociation energy of $H_{2}$ is 430.53 kJ $m o l^{- 1}$ . If hydrogen is dissociated by illumination with radiation of wavelength 253.7 nm, the fraction of the radiant energy which will be converted into kinetic energy is given by

Discussion

3.	For a general reaction aA(g) + bB(g) ⇋ cC(g)+ dD(g), what is the relationship between the equilibrium constants Kc and Kp? [assume Δn = μ = (c + d) - (a+b)
Answer» For a general reaction aA(g) + bB(g) $⇋$ cC(g)+ dD(g), what is the relationship between the equilibrium constants $K_{c}$ and $K_{p}$ ? [assume $Δ$ n = $μ$ = (c + d) - (a+b)

Discussion

4.	CHClICH2Br what is its IUPAC name ?
Answer» CHClICH2Br what is its IUPAC name ?

Discussion

5.	Calculate the volume of CO2 gas obtained on the complete combustion of 30 mL of propane gas at STP:
Answer» Calculate the volume of $C O_{2}$ gas obtained on the complete combustion of $30 mL$ of propane gas at STP:

Discussion

6.	A SOLID IS FORMED BY TWO ELEMENTS p and q.Q FORMS CCP AND P OCCUPY 1/3rd of tetrahedr al voids. formula of compound
Answer» A SOLID IS FORMED BY TWO ELEMENTS p and q.Q FORMS CCP AND P OCCUPY 1/3rd of tetrahedr al voids. formula of compound

Discussion

7.	A certain amount of metal whose equivalent mass is 28 displaces 0.7 litres of H2 at STP from acid hence mass of the element is
Answer» A certain amount of metal whose equivalent mass is 28 displaces 0.7 litres of H2 at STP from acid hence mass of the element is

Discussion

8.	The major product(s) of the following reaction is/are:
Answer» The major product(s) of the following reaction is/are:

Discussion

9.	Comapre ionisation energy in (1)Pt,pd,Ni(2) Cr,W,Mo
Answer» Comapre ionisation energy in (1)Pt,pd,Ni (2) Cr,W,Mo

Discussion

10.	The binding energies of nuclei X and Y are E1 and E2 respectively. Two atoms of X fuse together to give one atom of Y and some amount of energy,Q is released. Then
Answer» The binding energies of nuclei X and Y are E₁ and E₂ respectively. Two atoms of X fuse together to give one atom of Y and some amount of energy,Q is released. Then

Discussion

11.	The equivalent conductance of M/32 solution of a weak monobasic acid is 8.0 mho cm2, and at infinite dilution is 400 mhocm2. The dissociation constant of this acid is:
Answer» The equivalent conductance of M/32 solution of a weak monobasic acid is $8.0 m h o c m^{2}$ , and at infinite dilution is 400 $m h o c m^{2}$ . The dissociation constant of this acid is:

Discussion

12.	Force of interaction between 2 co-axial Short dipoles ??
Answer» Force of interaction between 2 co-axial Short dipoles ??

Discussion

13.	The correct order of bond angle is:
Answer» The correct order of bond angle is:

Discussion

14.	How many electrons together weigh one gram
Answer» How many electrons together weigh one gram

Discussion

15.	A fruit grower can use two types of fertilizer in his garden, brand P and brand Q. The amounts (in kg) of nitrogen, phosphoric acid, potash and chlorine in a bag of each brand are given in the table. Tests indicate that the garden needs at least 240 kg of phosphoric acid, at least 270 kg of potash and atmost 310 kg of chlorine. If the grower wants to minimize the amount of nitrogen added to the garden, how many bags of each brand should be used. What is the minimum amount of nitrogen added in the garden? kg per bag FertilizerBrand PBrand QNitrogen33.5Phosphoric acid12Potash31.5Chlorine1.52
Answer» A fruit grower can use two types of fertilizer in his garden, brand P and brand Q. The amounts (in kg) of nitrogen, phosphoric acid, potash and chlorine in a bag of each brand are given in the table. Tests indicate that the garden needs at least 240 kg of phosphoric acid, at least 270 kg of potash and atmost 310 kg of chlorine. If the grower wants to minimize the amount of nitrogen added to the garden, how many bags of each brand should be used. What is the minimum amount of nitrogen added in the garden? $\begin{matrix} k g p e r b a g \begin{matrix} F e r t i l i z e r & B r a n d P & B r a n d Q N i t r o g e n & 3 & 3.5 P h o s p h o r i c a c i d & 1 & 2 P o t a s h & 3 & 1.5 C h l o r i n e & 1.5 & 2 \end{matrix} \end{matrix}$

15.

A fruit grower can use two types of fertilizer in his garden, brand P and brand Q. The amounts (in kg) of nitrogen, phosphoric acid, potash and chlorine in a bag of each brand are given in the table. Tests indicate that the garden needs at least 240 kg of phosphoric acid, at least 270 kg of potash and atmost 310 kg of chlorine. If the grower wants to minimize the amount of nitrogen added to the garden, how many bags of each brand should be used. What is the minimum amount of nitrogen added in the garden? kg per bag FertilizerBrand PBrand QNitrogen33.5Phosphoric acid12Potash31.5Chlorine1.52

Answer»

A fruit grower can use two types of fertilizer in his garden, brand P and brand Q. The amounts (in kg) of nitrogen, phosphoric acid, potash and chlorine in a bag of each brand are given in the table. Tests indicate that the garden needs at least 240 kg of phosphoric acid, at least 270 kg of potash and atmost 310 kg of chlorine. If the grower wants to minimize the amount of nitrogen added to the garden, how many bags of each brand should be used. What is the minimum amount of nitrogen added in the garden?

$\begin{matrix} k g p e r b a g \begin{matrix} F e r t i l i z e r & B r a n d P & B r a n d Q N i t r o g e n & 3 & 3.5 P h o s p h o r i c a c i d & 1 & 2 P o t a s h & 3 & 1.5 C h l o r i n e & 1.5 & 2 \end{matrix} \end{matrix}$

Discussion

16.	Calculate mass% of NaOH in NaOH aqueous solution if mole fraction of NaOH is 0.1
Answer» Calculate mass% of NaOH in NaOH aqueous solution if mole fraction of NaOH is 0.1

Discussion

17.	When 120 g of urea is condensed, how many grams of melamine will be formed?
Answer» When 120 g of urea is condensed, how many grams of melamine will be formed?

Discussion

18.	28. IF A:B = 2:3 B:C= 4:5 C:D = 6:7 FIND A:B:C
Answer» 28. IF A:B = 2:3 B:C= 4:5 C:D = 6:7 FIND A:B:C

Discussion

19.	for a reaction X+Y^{+3}→ X^{+3}+Y at E^°=0.3 v hence Keq i
Answer» for a reaction X+Y^{+3}→ X^{+3}+Y at E^°=0.3 v hence Keq i

Discussion

20.	What is Swan -neck experiment explain it
Answer» What is Swan -neck experiment explain it

Discussion

21.	54. Describe the components of ETS and the formation of ATP using proton gradient in mitochondria?
Answer» 54. Describe the components of ETS and the formation of ATP using proton gradient in mitochondria?

Discussion

22.	The binding energies of the atoms of elements X and Y are Ex and Ey respectively. Three atoms of the element Y fuse to give one atom element X. This fusion process is accompained by release of energy U. Then Ex, Ey and U are related as :-(1)Ex = 3Ey(2)Ex = 3Ey + U(3)Ex = 3Ey – U(4)x + 3Ey + U = 0
Answer» The binding energies of the atoms of elements X and Y are Ex and Ey respectively. Three atoms of the element Y fuse to give one atom element X. This fusion process is accompained by release of energy U. Then Ex, Ey and U are related as :- (1)Ex = 3Ey (2)Ex = 3Ey + U (3)Ex = 3Ey – U (4)x + 3Ey + U = 0

Discussion

23.	In which of the following a most acidic product will be formed ?
Answer» In which of the following a most acidic product will be formed ?

Discussion

24.	Calculate equivalent weight of H3PO4 and Ca(OH)2 on basis on reaction in detail and simple language
Answer» Calculate equivalent weight of H3PO4 and Ca(OH)2 on basis on reaction in detail and simple language

Discussion

25.	Addition of a surfactant like detergent _________ surface tension:
Answer» Addition of a surfactant like detergent _________ surface tension:

Discussion

26.	What is the reaction of PhCH2NH2 with phthallic acid at high temperature ?
Answer» What is the reaction of PhCH2NH2 with phthallic acid at high temperature ?

Discussion

27.	What are the salts present in seawater?
Answer» What are the salts present in seawater?

Discussion

28.	x, y & z are three elements of periodic table x,y & z having 2, 3 & 6 electron in a valance shell respectively. The principle quantum value of the last eΘ for x, y & z are 2, 3 & 2 respectively then which of the following option is incorrect? (1) xz & y2z3 are amphoteric in nature(2) x < z (Ionisation energy order)(3) 'xz' & 'yz' are acidic in nature(4) All of these
Answer» x, y & z are three elements of periodic table x,y & z having 2, 3 & 6 electron in a valance shell respectively. The principle quantum value of the last eΘ for x, y & z are 2, 3 & 2 respectively then which of the following option is incorrect? (1) xz & y2z3 are amphoteric in nature(2) x < z (Ionisation energy order)(3) 'xz' & 'yz' are acidic in nature(4) All of these

Discussion

29.	9. A compound AB to ZnS type if all the atom touching any one of the daigonal plane of symmetry and anyvone of the C3 acis og symmetry has been removed simultaneously then findout formula of the compound?
Answer» 9. A compound AB to ZnS type if all the atom touching any one of the daigonal plane of symmetry and anyvone of the C3 acis og symmetry has been removed simultaneously then findout formula of the compound?

Discussion

30.	Use Moseley’s law with b=1, if the frequency of the Kα X-ray of Cu(Z=29) is known to be 1.88×1018 Hz, then the frequency of the Kα X-ray of La(Z=57) is 7.52×101x Hz. The value of x is .(Integer only)
Answer» Use Moseley’s law with $b = 1$ , if the frequency of the $K_{α} X-ray$ of $C u (Z = 29)$ is known to be $1.88 \times 10^{18} Hz$ , then the frequency of the $K_{α} X-ray$ of $L a (Z = 57)$ is $7.52 \times 10^{1 x} Hz$ . The value of $x$ is .(Integer only)

Discussion

31.	The cryoscopic constant for acetic acid is 3.6 Kkg/mol. A solution of 1 g of a hydrocarbon in 100 g of acetic acid freezes at 16.14 ∘C instead of the usual 16.60 ∘C. The hydrocarbon contains 92.3% carbon. What is its molecular formula?
Answer» The cryoscopic constant for acetic acid is $3.6 Kkg/mol$ . A solution of $1 g$ of a hydrocarbon in $100 g$ of acetic acid freezes at $16.14^{\circ} C$ instead of the usual $16.60^{\circ} C$ . The hydrocarbon contains 92.3% carbon. What is its molecular formula?

Discussion

32.	Positive dipole moment is present in
Answer» Positive dipole moment is present in

32.

Positive dipole moment is present in

Answer»

Positive dipole moment is present in

Discussion

33.	An LPG cylinder contains gas at a pressure of 300 kPa at 27∘C. The cylinder can withstand the pressure of 1.2×106 Pa. The room in which the cylinder is kept catches fire. The minimum temperature at which the bursting of cylinder will take place is ____ ∘C. (Nearest Integer)
Answer» An $L P G$ cylinder contains gas at a pressure of $300 k P a$ at $27^{\circ}$ C. The cylinder can withstand the pressure of $1.2 \times 10^{6} P a$ . The room in which the cylinder is kept catches fire. The minimum temperature at which the bursting of cylinder will take place is ____ $^{\circ}$ C. (Nearest Integer)

Discussion

34.	An alcohol X(C7H16O) shows immediate turbidity with HCl/ZnCl2 and can be resolved into enantiomers. Also, X has tertiary carbon. How many CH3 - groups are present in X?
Answer» An alcohol $X (C_{7} H_{16} O)$ shows immediate turbidity with $H C l / Z n C l_{2}$ and can be resolved into enantiomers. Also, X has tertiary carbon. How many $C H_{3}$ - groups are present in X?

Discussion

35.	What is parallax??
Answer» What is parallax??

Discussion

36.	Among the following molecular orbitals , how many have at least one nodal plane ? sigma1s , sigma 2s , sigma2pz , 2px , *2py , sigma2pz .
Answer» Among the following molecular orbitals , how many have at least one nodal plane ? sigma1s , sigma 2s , sigma2pz , 2px , *2py , sigma2pz .

Discussion

37.	3.Did h2s2o7 have any ion?
Answer» 3.Did h2s2o7 have any ion?

Discussion

38.	IF CRYSTALLINE SOLID ARE ANISOTROPIC THEN WHY IT HAS SAME MELTING POINT IN ALL DIRECTIONS?
Answer» IF CRYSTALLINE SOLID ARE ANISOTROPIC THEN WHY IT HAS SAME MELTING POINT IN ALL DIRECTIONS?

Discussion

39.	Whichof the following acids acts as reducing agent?
Answer» Which of the following acids acts as reducing agent?

Discussion

40.	Successive ionization potential of an element x are I.P.1=520Kj/mol, I.P.2=7298KJ/mol I. P.3=10815kj/mol What is the formula of its chloride and oxide??
Answer» Successive ionization potential of an element x are I.P.1=520Kj/mol, I.P.2=7298KJ/mol I. P.3=10815kj/mol What is the formula of its chloride and oxide??

Discussion

41.	The group number, number of valence electrons, and highest possible value of oxidation number of element having atomic number 25, respectively, are:
Answer» The group number, number of valence electrons, and highest possible value of oxidation number of element having atomic number $25$ , respectively, are:

Discussion

42.	Range of function f(x)={x}^{x} where {x} represents fractional part of x
Answer» Range of function f(x)={x}^{x} where {x} represents fractional part of x

Discussion

43.	Product obtained in the reaction below is : CH3CH2COOHP/Cl2−−−→[X]
Answer» Product obtained in the reaction below is : $C H_{3} C H_{2} C O O H P / C l_{2} - -- \to [X]$

Discussion

44.	Which of the following is anhydride of perchloric acid
Answer» Which of the following is anhydride of perchloric acid

Discussion

45.	If radius of a nitrogen molecule to be roughly 1.0angstrom, then mean free path of nitrogen molecule in a cylinder containing nitrogen at 2 atm and temperature 17°C(Molecular mass of nitrogen=28gm) is
Answer» If radius of a nitrogen molecule to be roughly 1.0angstrom, then mean free path of nitrogen molecule in a cylinder containing nitrogen at 2 atm and temperature 17°C(Molecular mass of nitrogen=28gm) is

Discussion

46.	Dancing resonance??
Answer» Dancing resonance??

Discussion

47.	Which of the following graphs show equilibrium:
Answer» Which of the following graphs show equilibrium:

Discussion

48.	Which of the following exhibits geometrical isomerism?
Answer» Which of the following exhibits geometrical isomerism?

Discussion

49.	Meaning of dimer
Answer» Meaning of dimer

Discussion

50.	The compressibility factor of a gas is less than 1 at STP. Its molar volume Vm will be:
Answer» The compressibility factor of a gas is less than 1 at STP. Its molar volume $V_{m}$ will be:

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

What is the pH of a 1.0 M solution of acetic acid? To what volume of one litre of this solution be diluted so that the pH of resulting solution will be twice the original value? Given Ka=1.8 ×10−5, log10 4.2426×10−3=2.3724

The dissociation energy of H2 is 430.53 kJ mol−1. If hydrogen is dissociated by illumination with radiation of wavelength 253.7 nm, the fraction of the radiant energy which will be converted into kinetic energy is given by

For a general reaction aA(g) + bB(g) ⇋ cC(g)+ dD(g), what is the relationship between the equilibrium constants Kc and Kp? [assume Δn = μ = (c + d) - (a+b)

CHClICH2Br what is its IUPAC name ?

Calculate the volume of CO2 gas obtained on the complete combustion of 30 mL of propane gas at STP:

A SOLID IS FORMED BY TWO ELEMENTS p and q.Q FORMS CCP AND P OCCUPY 1/3rd of tetrahedr al voids. formula of compound

A certain amount of metal whose equivalent mass is 28 displaces 0.7 litres of H2 at STP from acid hence mass of the element is

The major product(s) of the following reaction is/are:

Comapre ionisation energy in (1)Pt,pd,Ni(2) Cr,W,Mo

The binding energies of nuclei X and Y are E1 and E2 respectively. Two atoms of X fuse together to give one atom of Y and some amount of energy,Q is released. Then

The equivalent conductance of M/32 solution of a weak monobasic acid is 8.0 mho cm2, and at infinite dilution is 400 mhocm2. The dissociation constant of this acid is:

Force of interaction between 2 co-axial Short dipoles ??

The correct order of bond angle is:

How many electrons together weigh one gram

Calculate mass% of NaOH in NaOH aqueous solution if mole fraction of NaOH is 0.1

When 120 g of urea is condensed, how many grams of melamine will be formed?

28. IF A:B = 2:3 B:C= 4:5 C:D = 6:7 FIND A:B:C

for a reaction X+Y^{+3}→ X^{+3}+Y at E^°=0.3 v hence Keq i

What is Swan -neck experiment explain it

54. Describe the components of ETS and the formation of ATP using proton gradient in mitochondria?

The binding energies of the atoms of elements X and Y are Ex and Ey respectively. Three atoms of the element Y fuse to give one atom element X. This fusion process is accompained by release of energy U. Then Ex, Ey and U are related as :-(1)Ex = 3Ey(2)Ex = 3Ey + U(3)Ex = 3Ey – U(4)x + 3Ey + U = 0

In which of the following a most acidic product will be formed ?

Calculate equivalent weight of H3PO4 and Ca(OH)2 on basis on reaction in detail and simple language

Addition of a surfactant like detergent _________ surface tension:

What is the reaction of PhCH2NH2 with phthallic acid at high temperature ?

What are the salts present in seawater?

9. A compound AB to ZnS type if all the atom touching any one of the daigonal plane of symmetry and anyvone of the C3 acis og symmetry has been removed simultaneously then findout formula of the compound?

Use Moseley’s law with b=1, if the frequency of the Kα X-ray of Cu(Z=29) is known to be 1.88×1018 Hz, then the frequency of the Kα X-ray of La(Z=57) is 7.52×101x Hz. The value of x is .(Integer only)

The cryoscopic constant for acetic acid is 3.6 Kkg/mol. A solution of 1 g of a hydrocarbon in 100 g of acetic acid freezes at 16.14 ∘C instead of the usual 16.60 ∘C. The hydrocarbon contains 92.3% carbon. What is its molecular formula?

Positive dipole moment is present in

An alcohol X(C7H16O) shows immediate turbidity with HCl/ZnCl2 and can be resolved into enantiomers. Also, X has tertiary carbon. How many CH3 - groups are present in X?

What is parallax??

Among the following molecular orbitals , how many have at least one nodal plane ? sigma*1s , sigma 2s , sigma*2pz , 2px , *2py , sigma2pz .

3.Did h2s2o7 have any ion?

IF CRYSTALLINE SOLID ARE ANISOTROPIC THEN WHY IT HAS SAME MELTING POINT IN ALL DIRECTIONS?

Whichof the following acids acts as reducing agent?

Successive ionization potential of an element x are I.P.1=520Kj/mol, I.P.2=7298KJ/mol I. P.3=10815kj/mol What is the formula of its chloride and oxide??

The group number, number of valence electrons, and highest possible value of oxidation number of element having atomic number 25, respectively, are:

Range of function f(x)={x}^{x} where {x} represents fractional part of x

Product obtained in the reaction below is : CH3CH2COOHP/Cl2−−−→[X]

Which of the following is anhydride of perchloric acid

If radius of a nitrogen molecule to be roughly 1.0angstrom, then mean free path of nitrogen molecule in a cylinder containing nitrogen at 2 atm and temperature 17°C(Molecular mass of nitrogen=28gm) is

Dancing resonance??

Which of the following graphs show equilibrium:

Which of the following exhibits geometrical isomerism?

Meaning of dimer

The compressibility factor of a gas is less than 1 at STP. Its molar volume Vm will be:

Among the following molecular orbitals , how many have at least one nodal plane ? sigma1s , sigma 2s , sigma2pz , 2px , *2py , sigma2pz .