46295 + Interview Questions in Chemistry

1.	80.Fluorine molecule is formed by 1. Axial p-p overlap 2.sideways p-p overlap 3.axial s-p overlap 4.overlap of 2 sp2 hybrid orbitals
Answer» 80.Fluorine molecule is formed by 1. Axial p-p overlap 2.sideways p-p overlap 3.axial s-p overlap 4.overlap of 2 sp2 hybrid orbitals

Discussion

2.	The de Broglie wavelength of a particle with mass 1 gram and velocity 100 m/sec is
Answer» The de Broglie wavelength of a particle with mass 1 gram and velocity 100 m/sec is

Discussion

3.	Does Ni(gly)2 show optical isomerism or geometric isomerism?
Answer» Does Ni(gly)2 show optical isomerism or geometric isomerism?

Discussion

4.	ntLattice enthalpies of alkaline earth metals are more than those of alkali metals. Then why alkali metal carbonates are more stable to heat than alkaline earth metal carbonates ?n
Answer» ntLattice enthalpies of alkaline earth metals are more than those of alkali metals. Then why alkali metal carbonates are more stable to heat than alkaline earth metal carbonates ?n

Discussion

5.	56. What is the difference between atomic mass and molar mass
Answer» 56. What is the difference between atomic mass and molar mass

Discussion

6.	Low spin complex of d6− cation in an octahedral field will have the following crystal field stabilization energy(Δ0= crystal field splitting energy in an octahedral field, P= Electron pairing energy)
Answer» Low spin complex of $d^{6} -$ cation in an octahedral field will have the following crystal field stabilization energy $(Δ_{0} =$ crystal field splitting energy in an octahedral field, $P =$ Electron pairing energy)

Discussion

7.	Compute the percentage void space per unit volume of unit cell in zinc-fluride structure. In zinc fluoride, anions occupy fcc positions and half of the tetrahedral holes are occupied by cations.
Answer» Compute the percentage void space per unit volume of unit cell in zinc-fluride structure. In zinc fluoride, anions occupy fcc positions and half of the tetrahedral holes are occupied by cations.

7.

Compute the percentage void space per unit volume of unit cell in zinc-fluride structure. In zinc fluoride, anions occupy fcc positions and half of the tetrahedral holes are occupied by cations.

Answer»

Compute the percentage void space per unit volume of unit cell in zinc-fluride structure. In zinc fluoride, anions occupy

fcc positions and half of the tetrahedral holes are occupied by cations.

Discussion

8.	How we will get to know which compound is more stable
Answer» How we will get to know which compound is more stable

Discussion

9.	For the reaction 2Fe3+(aq)+2I–(aq)→2Fe2+(aq)+I2(s)The magnitude of the standard molar free energy change,ΔrG0m=–______kJ (Round off the Nearest Integer).E0Fe2+/Fe(s)=−0.440 VE0Fe3+/Fe(s)=−0.036 VE0I2/2I−=0.539 VF=96500 C
Answer» For the reaction $2 F e^{3 +} (a q) + 2 I^{-} (a q) \to 2 F e^{2 +} (a q) + I_{2} (s)$ The magnitude of the standard molar free energy change, $Δ_{r} G_{m}^{0} = -$ ______kJ (Round off the Nearest Integer). $E_{F e^{2 +} / F e (s)}^{0} = - 0.440 V E_{F e^{3 +} / F e (s)}^{0} = - 0.036 V E_{I_{2} / 2 I^{-}}^{0} = 0.539 V F = 96500 C$

Discussion

10.	The ratio of the absolute masses and the charges of a proton to a neutron respectively are:
Answer» The ratio of the absolute masses and the charges of a proton to a neutron respectively are:

Discussion

11.	Calculate the Zeff on the electron present in 5d− orbital of Gd (Atomic number =64).
Answer» Calculate the $Z_{eff}$ on the electron present in $5 d -$ orbital of $G d$ (Atomic number $= 64$ ).

Discussion

12.	Carbyl amine test is performed in alcoholic KOH by heating a mixture of
Answer» Carbyl amine test is performed in alcoholic KOH by heating a mixture of

Discussion

13.	what is resonance conditions?
Answer» what is resonance conditions?

Discussion

14.	Two flasks of equal volume connected by a narrow tube (of negligible volume) are at 27∘ C and contain 0.70 mole of H2 at 0.5 atm. One of the flasks is then immersed into a hot bath, kept at 127∘ C, while the other remains at 27∘ C. The final pressure is atm.
Answer» Two flasks of equal volume connected by a narrow tube (of negligible volume) are at $27^{\circ} C$ and contain 0.70 mole of $H_{2}$ at 0.5 atm. One of the flasks is then immersed into a hot bath, kept at $127^{\circ} C$ , while the other remains at $27^{\circ} C$ . The final pressure is atm.

Discussion

15.	When two half cells of electrode potential of E1 and E2 are combined to form a cell of electrode potential E3 then ( n1 ,n2 and n3 are the electrons exchanged in first second and combined half cells )give an expression for E3 using above informations
Answer» When two half cells of electrode potential of E1 and E2 are combined to form a cell of electrode potential E3 then ( n1 ,n2 and n3 are the electrons exchanged in first second and combined half cells )give an expression for E3 using above informations

Discussion

16.	The conjugate base of an ammonium ion is-
Answer» The conjugate base of an ammonium ion is-

Discussion

17.	The temperature of a gas placed in an open container is raised from 27∘ to 227∘C. The percent of the original amount of the gas expelled from the container will be ?
Answer» The temperature of a gas placed in an open container is raised from $27^{\circ} t o 227^{\circ} C .$ The percent of the original amount of the gas expelled from the container will be ?

Discussion

18.	What is the effect of steric hindrance on sn1 reaction?
Answer» What is the effect of steric hindrance on sn1 reaction?

Discussion

19.	If a piece of iron gains 10% of its mass due to partial rusting into ferric oxide the percentage of total iron that has rusted is
Answer» If a piece of iron gains 10% of its mass due to partial rusting into ferric oxide the percentage of total iron that has rusted is

Discussion

20.	Balancing equation usin Oxidation number. Steps.
Answer» Balancing equation usin Oxidation number. Steps.

Discussion

21.	We know that under high pressure, graphite can be converted to diamond. At room temperature, both are solids. So, A) Is the state same? B) Is the phase same?
Answer» We know that under high pressure, graphite can be converted to diamond. At room temperature, both are solids. So, A) Is the state same? B) Is the phase same?

Discussion

22.	Integrate dx/[cosx(4+5cosx)]
Answer» Integrate dx/[cosx(4+5cosx)]

Discussion

23.	Why does Sky appear Blue ? Which phenomenon explains the appearance ?
Answer» Why does Sky appear Blue ? Which phenomenon explains the appearance ?

Discussion

24.	Which of the following compounds can exhibit linkage isomerism?
Answer» Which of the following compounds can exhibit linkage isomerism?

Discussion

25.	Number of atoms of iron present in 100 g of Fe2O3 having 20% purity is
Answer» Number of atoms of iron present in 100 g of Fe2O3 having 20% purity is

Discussion

26.	A cubic solid is made of two elements P and Q. Atom of Q are at the corners of the cube and P at the body center. What is the formula of compound ? What are the coordination numbers of P and Q?
Answer» A cubic solid is made of two elements P and Q. Atom of Q are at the corners of the cube and P at the body center. What is the formula of compound ? What are the coordination numbers of P and Q?

Discussion

27.	Which is incorrect?Conjugate acid of h2o is h30+Conjugate base of hco3 - is co3 2-Conjugate base of NH3 is NH2-Conjugate base of HOCl is Cl-
Answer» Which is incorrect? Conjugate acid of h2o is h30+ Conjugate base of hco3 - is co3 2- Conjugate base of NH3 is NH2- Conjugate base of HOCl is Cl-

Discussion

28.	Solubility product of silver bromide is 5.0×10−13. How much of potassium bromide (120 g mol−1) has to be added to 1 L of 0.05 M solution of silver nitrate to start the precipitation of AgBr ?
Answer» Solubility product of silver bromide is $5.0 \times 10^{- 13}$ . How much of potassium bromide $(120 {g mol}^{- 1})$ has to be added to $1 L$ of $0.05 M$ solution of silver nitrate to start the precipitation of $A g B r$ ?

Discussion

29.	When KMnO4 acts as an oxidising agent and ultimately forms [MnO4]−2, MnO2, Mn2O3, Mn+2, then number of electrons transferred in each case is p,q,r and s respectively. Find the value of (s−r)2+(q−p)2.
Answer» When $K M n O_{4}$ acts as an oxidising agent and ultimately forms $[M n O_{4}]^{- 2}, M n O_{2}, M n_{2} O_{3}, M n^{+ 2}$ , then number of electrons transferred in each case is $p, q, r$ and $s$ respectively. Find the value of $(s - r)^{2} + (q - p)^{2}$ .

Discussion

30.	Which of the following metals occur in the free or native state?
Answer» Which of the following metals occur in the free or native state?

Discussion

31.	Arrange the following solutions in the decreasing order of pOH(A) 0.01 M HCl(B) 0.01 M NaOH(C) 0.01 M CH3COONa(D) 0.01 M NaCl
Answer» Arrange the following solutions in the decreasing order of $p O H$ (A) $0.01 M H C l$ (B) $0.01 M N a O H$ (C) $0.01 M C H_{3} C O O N a$ (D) $0.01 M N a C l$

Discussion

32.	17.Is there any relationship between oxidation state and acid strength? What are the factors that determines the acidic strength?
Answer» 17.Is there any relationship between oxidation state and acid strength? What are the factors that determines the acidic strength?

Discussion

33.	Which of the following is an energy consuming process?
Answer» Which of the following is an energy consuming process?

Discussion

34.	What is the hybridisation state of xenon in XeOF4?
Answer» What is the hybridisation state of xenon in $X e O F_{4}$ ?

Discussion

35.	Whichone of the following has Frenkel defect[MP PMT 2000]
Answer» Which one of the following has Frenkel defect [MP PMT 2000]

35.

Whichone of the following has Frenkel defect[MP PMT 2000]

Answer»

Which
one of the following has Frenkel defect

[MP PMT 2000]

Discussion

36.	3Br2 + 6NaOH → 5NaBr + NaBrO3 Find eq. wt. of NaOH.exp the highlighted part in the attac
Answer» 3Br2 + 6NaOH → 5NaBr + NaBrO3 Find eq. wt. of NaOH.exp the highlighted part in the attac

Discussion

37.	Which of the following alcohols will yield the corresponding alkyl chloride on reaction with concentrated HCl at room temperature?
Answer» Which of the following alcohols will yield the corresponding alkyl chloride on reaction with concentrated HCl at room temperature?

Discussion

38.	4. Half reactions
Answer» 4. Half reactions

Discussion

39.	(1) what is the Oxidation no. Of Co,Fe,Ni in [Co(NH3)6]3+,[Fe(CN)6]4- and [Ni(Co)4]?How? (2) Coordination no. Of [Fe(C2O4)3]3- and [Co(en)3]3+?How?
Answer» (1) what is the Oxidation no. Of Co,Fe,Ni in [Co(NH3)6]3+,[Fe(CN)6]4- and [Ni(Co)4]?How? (2) Coordination no. Of [Fe(C2O4)3]3- and [Co(en)3]3+?How?

Discussion

40.	Compoundsformed, when methyl amine is head with chloroform in the presence of KOH is:
Answer» Compounds formed, when methyl amine is head with chloroform in the presence of KOH is:

Discussion

41.	The mass of 1 litre of ozonised oxygen at N.T.P was found to be 1.5 g. When a hundred mL of this mixture at N.T.P were treated with turpentine oil, the volume was reduced to 90 mL. The molecular mass of ozone is:
Answer» The mass of $1$ litre of ozonised oxygen at N.T.P was found to be $1.5 g$ . When a hundred $m L$ of this mixture at N.T.P were treated with turpentine oil, the volume was reduced to $90 m L$ . The molecular mass of ozone is:

Discussion

42.	Questoin 25 What is the symbol for SI unit of mole ? How is the mole defined ?
Answer» Questoin 25 What is the symbol for SI unit of mole ? How is the mole defined ?

42.

Questoin 25 What is the symbol for SI unit of mole ? How is the mole defined ?

Answer»

Questoin 25

What is the symbol for SI unit of mole ? How is the mole defined ?

Discussion

43.	Which of the following is a synthetic polymer?
Answer» Which of the following is a synthetic polymer?

Discussion

44.	What are sulphur amino acids?
Answer» What are sulphur amino acids?

Discussion

45.	Which of the following elements can not exhibit sp3d hybridisation state:
Answer» Which of the following elements can not exhibit $s p^{3} d$ hybridisation state:

Discussion

46.	Two circular loops P and Q are made of same wireand their radii are in ratio 1 : n. Their moment ofinertia about the axis passing through the centreand perpendicular to their plane are in ratio 1 : m.Then, m and n are related as
Answer» Two circular loops P and Q are made of same wire and their radii are in ratio 1 : n. Their moment of inertia about the axis passing through the centre and perpendicular to their plane are in ratio 1 : m. Then, m and n are related as

Discussion

47.	ofWhich of the following has maximum percentagenitrogen by mass?(1) Morphine : C17H19NO3(2) Heroin C21H23NO5Ho NC(3) LSD C20H25N,O(4) Phencyclidine : C17H25N5
Answer» ofWhich of the following has maximum percentagenitrogen by mass?(1) Morphine : C17H19NO3(2) Heroin C21H23NO5Ho NC(3) LSD C20H25N,O(4) Phencyclidine : C17H25N5

Discussion

48.	correct order of acidic strength of hclo4 h2so4 hcl and hno3 in acetic acid solvent
Answer» correct order of acidic strength of hclo4 h2so4 hcl and hno3 in acetic acid solvent

Discussion

49.	A metal crystallises in two cubic phases, face entered cubic and body entered cubic whose unit length are 3.5 and 3.0 Angstrom respectively. Calculate the ratio of density of FCC and BCC.
Answer» A metal crystallises in two cubic phases, face entered cubic and body entered cubic whose unit length are 3.5 and 3.0 Angstrom respectively. Calculate the ratio of density of FCC and BCC.

Discussion

50.	Balance the reaction by ion electron method Fe(OH)2+H2O2=Fe(OH)3+H2O
Answer» Balance the reaction by ion electron method Fe(OH)₂+H₂O₂=Fe(OH)₃₊H₂O

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

80.Fluorine molecule is formed by 1. Axial p-p overlap 2.sideways p-p overlap 3.axial s-p overlap 4.overlap of 2 sp2 hybrid orbitals

The de Broglie wavelength of a particle with mass 1 gram and velocity 100 m/sec is

Does Ni(gly)2 show optical isomerism or geometric isomerism?

ntLattice enthalpies of alkaline earth metals are more than those of alkali metals. Then why alkali metal carbonates are more stable to heat than alkaline earth metal carbonates ?n

56. What is the difference between atomic mass and molar mass

Low spin complex of d6− cation in an octahedral field will have the following crystal field stabilization energy(Δ0= crystal field splitting energy in an octahedral field, P= Electron pairing energy)

Compute the percentage void space per unit volume of unit cell in zinc-fluride structure. In zinc fluoride, anions occupy fcc positions and half of the tetrahedral holes are occupied by cations.

How we will get to know which compound is more stable

For the reaction 2Fe3+(aq)+2I–(aq)→2Fe2+(aq)+I2(s)The magnitude of the standard molar free energy change,ΔrG0m=–______kJ (Round off the Nearest Integer).E0Fe2+/Fe(s)=−0.440 VE0Fe3+/Fe(s)=−0.036 VE0I2/2I−=0.539 VF=96500 C

The ratio of the absolute masses and the charges of a proton to a neutron respectively are:

Calculate the Zeff on the electron present in 5d− orbital of Gd (Atomic number =64).

Carbyl amine test is performed in alcoholic KOH by heating a mixture of

what is resonance conditions?

Two flasks of equal volume connected by a narrow tube (of negligible volume) are at 27∘ C and contain 0.70 mole of H2 at 0.5 atm. One of the flasks is then immersed into a hot bath, kept at 127∘ C, while the other remains at 27∘ C. The final pressure is atm.

When two half cells of electrode potential of E1 and E2 are combined to form a cell of electrode potential E3 then ( n1 ,n2 and n3 are the electrons exchanged in first second and combined half cells )give an expression for E3 using above informations

The conjugate base of an ammonium ion is-

The temperature of a gas placed in an open container is raised from 27∘ to 227∘C. The percent of the original amount of the gas expelled from the container will be ?

What is the effect of steric hindrance on sn1 reaction?

If a piece of iron gains 10% of its mass due to partial rusting into ferric oxide the percentage of total iron that has rusted is

Balancing equation usin Oxidation number. Steps.

We know that under high pressure, graphite can be converted to diamond. At room temperature, both are solids. So, A) Is the state same? B) Is the phase same?

Integrate dx/[cosx(4+5cosx)]

Why does Sky appear Blue ? Which phenomenon explains the appearance ?

Which of the following compounds can exhibit linkage isomerism?

Number of atoms of iron present in 100 g of Fe2O3 having 20% purity is

A cubic solid is made of two elements P and Q. Atom of Q are at the corners of the cube and P at the body center. What is the formula of compound ? What are the coordination numbers of P and Q?

Which is incorrect?Conjugate acid of h2o is h30+Conjugate base of hco3 - is co3 2-Conjugate base of NH3 is NH2-Conjugate base of HOCl is Cl-

Solubility product of silver bromide is 5.0×10−13. How much of potassium bromide (120 g mol−1) has to be added to 1 L of 0.05 M solution of silver nitrate to start the precipitation of AgBr ?

When KMnO4 acts as an oxidising agent and ultimately forms [MnO4]−2, MnO2, Mn2O3, Mn+2, then number of electrons transferred in each case is p,q,r and s respectively. Find the value of (s−r)2+(q−p)2.

Which of the following metals occur in the free or native state?

Arrange the following solutions in the decreasing order of pOH(A) 0.01 M HCl(B) 0.01 M NaOH(C) 0.01 M CH3COONa(D) 0.01 M NaCl

17.Is there any relationship between oxidation state and acid strength? What are the factors that determines the acidic strength?

Which of the following is an energy consuming process?

What is the hybridisation state of xenon in XeOF4?

Whichone of the following has Frenkel defect[MP PMT 2000]

3Br2 + 6NaOH → 5NaBr + NaBrO3 Find eq. wt. of NaOH.exp the highlighted part in the attac

Which of the following alcohols will yield the corresponding alkyl chloride on reaction with concentrated HCl at room temperature?

4. Half reactions

(1) what is the Oxidation no. Of Co,Fe,Ni in [Co(NH3)6]3+,[Fe(CN)6]4- and [Ni(Co)4]?How? (2) Coordination no. Of [Fe(C2O4)3]3- and [Co(en)3]3+?How?

Compoundsformed, when methyl amine is head with chloroform in the presence of KOH is:

The mass of 1 litre of ozonised oxygen at N.T.P was found to be 1.5 g. When a hundred mL of this mixture at N.T.P were treated with turpentine oil, the volume was reduced to 90 mL. The molecular mass of ozone is:

Questoin 25 What is the symbol for SI unit of mole ? How is the mole defined ?

Which of the following is a synthetic polymer?

What are sulphur amino acids?

Which of the following elements can not exhibit sp3d hybridisation state:

Two circular loops P and Q are made of same wireand their radii are in ratio 1 : n. Their moment ofinertia about the axis passing through the centreand perpendicular to their plane are in ratio 1 : m.Then, m and n are related as

ofWhich of the following has maximum percentagenitrogen by mass?(1) Morphine : C17H19NO3(2) Heroin C21H23NO5Ho NC(3) LSD C20H25N,O(4) Phencyclidine : C17H25N5

correct order of acidic strength of hclo4 h2so4 hcl and hno3 in acetic acid solvent

A metal crystallises in two cubic phases, face entered cubic and body entered cubic whose unit length are 3.5 and 3.0 Angstrom respectively. Calculate the ratio of density of FCC and BCC.

Balance the reaction by ion electron method Fe(OH)2+H2O2=Fe(OH)3+H2O