46295 + Interview Questions in Chemistry

1.	Why don't metals react with each other and share their electrons and form covalent bonds to gain stability by completeing their octet like non- metals do?
Answer» Why don't metals react with each other and share their electrons and form covalent bonds to gain stability by completeing their octet like non- metals do?

Discussion

2.	1 mole of a triatomic non-linear ideal gas is subjected to an adiabatic process from initial temperature 400 K and pressure 32 atm to final pressure 2 atm. If the expansion is carried out against vaccum, the entropy change (in cal K−1) for the system is [ln2=0.7]
Answer» 1 mole of a triatomic non-linear ideal gas is subjected to an adiabatic process from initial temperature 400 K and pressure 32 atm to final pressure 2 atm. If the expansion is carried out against vaccum, the entropy change (in cal $K^{- 1}$ ) for the system is $[l n 2 = 0.7]$

Discussion

3.

Match the elements with the highest exhibited property: Column I Column II P Cs 1 atomic size Q F 2 Electron affinity R Cl 3 Electronegativity S Ar 4 Metallic character

Answer»

Match the elements with the highest exhibited property:

	Column I		Column II
P	Cs	1	atomic size
Q	F	2	Electron affinity
R	Cl	3	Electronegativity
S	Ar	4	Metallic character

Discussion

4.	29. The number of gram equivalents of H3PO4 present in its 0.1 molar 250 ml solution is
Answer» 29. The number of gram equivalents of H3PO4 present in its 0.1 molar 250 ml solution is

Discussion

5.	Which of the following pairs of compounds has same number of valence electrons and also isostructural ?
Answer» Which of the following pairs of compounds has same number of valence electrons and also isostructural ?

Discussion

6.	39. A galvanic cell is composed of two hydrogen electrodes, one of which is a standard one. In which of the following solutions should the other electrode be immersed to get maximum EMF A) 0.1M HCL B) 0.1M H2SO4 C) 0.1M NH4OH
Answer» 39. A galvanic cell is composed of two hydrogen electrodes, one of which is a standard one. In which of the following solutions should the other electrode be immersed to get maximum EMF A) 0.1M HCL B) 0.1M H2SO4 C) 0.1M NH4OH

Discussion

7.	The number of atoms in 4.25 grams of NH3 is approximately(need the answer with a detailed explanation)
Answer» The number of atoms in 4.25 grams of NH₃ is approximately(need the answer with a detailed explanation)

Discussion

8.	250 ml of a gaseous mixture of C2H4 and C3H8 requires 850 ml of oxygen for complete combustion. the volume ratio of C2H4 and C3H8 in the initial mixture is
Answer» 250 ml of a gaseous mixture of $C_{2} H_{4}$ and $C_{3} H_{8}$ requires 850 ml of oxygen for complete combustion. the volume ratio of $C_{2} H_{4}$ and $C_{3} H_{8}$ in the initial mixture is

Discussion

9.	Why bond enthalpy of Carbon monoxide bond is more than that of N_2?
Answer» Why bond enthalpy of Carbon monoxide bond is more than that of N_2?

Discussion

10.	What is the hybridization of phosphorus in PCl5?
Answer» What is the hybridization of phosphorus in $P C l_{5}$ ?

Discussion

11.	The degree of dissociation of I2 molecule at 10000C and under atmospheric pressure is 40% by volume. The total pressure on the gas at equilibrium so that the dissociation is reduced to 20% at the same temperature, will be
Answer» The degree of dissociation of I₂ molecule at 1000⁰C and under atmospheric pressure is 40% by volume. The total pressure on the gas at equilibrium so that the dissociation is reduced to 20% at the same temperature, will be

Discussion

12.	If molarity of methanol in water is 5 then the mass percentage of methanol in ghe solution is 1.21.5% 2.10.5% 3.13.8% 4.27.2
Answer» If molarity of methanol in water is 5 then the mass percentage of methanol in ghe solution is 1.21.5% 2.10.5% 3.13.8% 4.27.2

Discussion

13.	A hypothetical electromagnetic wave is shown below. Find out the frequency of the radiation.
Answer» A hypothetical electromagnetic wave is shown below. Find out the frequency of the radiation.

Discussion

14.	Which of the following represents the monomer of cellulose?
Answer» Which of the following represents the monomer of cellulose?

Discussion

15.	[Cr(NH3)6]3+ is paramagneticwhile [Ni(CN)4]2− is diamagnetic. Explainwhy?
Answer» [Cr(NH₃)₆]³⁺ is paramagnetic while [Ni(CN)₄]²⁻ is diamagnetic. Explain why?

Discussion

16.	Pure ammonia is placed in a vessel at temperature where its dissociation constant ( ) is appreciable. At equilibrium
Answer» Pure ammonia is placed in a vessel at temperature where its dissociation constant ( ) is appreciable. At equilibrium

Discussion

17.	The unit of Kp for the following reaction at equilibrium will be : N2 (g)+3H2 (g)⇌2NH3 (g)
Answer» The unit of $K_{p}$ for the following reaction at equilibrium will be : $N_{2} (g) + 3 H_{2} (g) ⇌ 2 N H_{3} (g)$

Discussion

18.	At 80^° C, distilled water has \lbrack H 01 concentrationequal to 1 x 10-6 mole/litre. The value of Ky at thistemperature will be(2) 1 x 10-15(4) 1 x 10-9(3) 1 x 10-6t anpraciably chanae
Answer» At 80^° C, distilled water has \lbrack H 01 concentrationequal to 1 x 10-6 mole/litre. The value of Ky at thistemperature will be(2) 1 x 10-15(4) 1 x 10-9(3) 1 x 10-6t anpraciably chanae

Discussion

19.	Which of the following is not formed by the reaction of Cl2 with CH4 in presence of sunlight?
Answer» Which of the following is not formed by the reaction of $C l_{2}$ with $C H_{4}$ in presence of sunlight?

Discussion

20.	Carbanion formation in the presence of a strong base is the easiest in -
Answer» Carbanion formation in the presence of a strong base is the easiest in -

Discussion

21.	Calculate the solubility of hydrogen in water at 25 degree Celsius if its partial pressure above the solution is 1 bar. Given that Henry's constant for hydrogen at 25 degree Celsius is 71.18 K bar.
Answer» Calculate the solubility of hydrogen in water at 25 degree Celsius if its partial pressure above the solution is 1 bar. Given that Henry's constant for hydrogen at 25 degree Celsius is 71.18 K bar.

Discussion

22.	Fraction of total volume occupied by atoms in simple cubic cell is:
Answer» Fraction of total volume occupied by atoms in simple cubic cell is:

Discussion

23.	The correct statement(s) regarding electrons is/are (A) they are heavier than protons (B) energy of electrons are not quantized when they are out of nuclear attraction forces (C) the energy of ionized electrons has no negative value(D) they are the constituent particles of cathode rays
Answer» The correct statement(s) regarding electrons is/are (A) they are heavier than protons (B) energy of electrons are not quantized when they are out of nuclear attraction forces (C) the energy of ionized electrons has no negative value(D) they are the constituent particles of cathode rays

Discussion

24.	which have least polar bond? H-F O-H C-H N-
Answer» which have least polar bond? H-F O-H C-H N-

Discussion

25.	What type of forces are involved in binding of substrate to the active site of enzyme?
Answer» What type of forces are involved in binding of substrate to the active site of enzyme?

Discussion

26.	What is the hydrisation of N atom in acetamide?
Answer» What is the hydrisation of N atom in acetamide?

Discussion

27.	how to convert an alcohol to a cyanide?
Answer» how to convert an alcohol to a cyanide?

Discussion

28.	Draw diagrams showing the formation of a double bond and a triple bond between carbon atoms in C2H4 and C2H2 molecules.
Answer» Draw diagrams showing the formation of a double bond and a triple bond between carbon atoms in $C_{2} H_{4}$ and $C_{2} H_{2}$ molecules.

Discussion

29.	If the heat of formation of NO 2 is 'x' [1/2N 2(g) +O 2(g) →NO 2(g) ] the heat of reaction N 2(g) +O 2(g) →2NO (g) is y and the heat of reaction 2NO (g) +O 2(g) →2NO 2 (g) is z, then:
Answer» If the heat of formation of NO 2 is 'x' [1/2N 2(g) +O 2(g) →NO 2(g) ] the heat of reaction N 2(g) +O 2(g) →2NO (g) is y and the heat of reaction 2NO (g) +O 2(g) →2NO 2 (g) is z, then:

Discussion

30.	Find the number of hypervalent compounds among the following. BF3,SF4,NCl3,PCl5,SiF4,BrF5,XeF2,BeCl2
Answer» Find the number of hypervalent compounds among the following. $B F_{3}, S F_{4}, N C l_{3}, P C l_{5}, S i F_{4}, B r F_{5}, X e F_{2}, B e C l_{2}$

Discussion

31.	In compound HC triple bondC- CH2- CH= CH- CH3,the C2- C3 bond is the type of :(1) sp- sp2(3) sp - sp3(2) sp3 -sp3(4) sp2 sp2
Answer» In compound HC triple bondC- CH2- CH= CH- CH3,the C2- C3 bond is the type of :(1) sp- sp2(3) sp - sp3(2) sp3 -sp3(4) sp2 sp2

Discussion

32.	PE is -27.2 eV in second or bit of He+ ion then calculate, double of total energy in first excited state of H atom
Answer» PE is -27.2 eV in second or bit of He+ ion then calculate, double of total energy in first excited state of H atom

Discussion

33.	4.5 g of a solute having molar mass of 90 g/mol is dissolved in water to make a 250 mL solution. Calculate the molarity of the solution.
Answer» $4.5 g$ of a solute having molar mass of $90 g / m o l$ is dissolved in water to make a $250 m L$ solution. Calculate the molarity of the solution.

Discussion

34.	What is the role of cryolite in the metallurgy of aluminium?
Answer» What is the role of cryolite in the metallurgy of aluminium?

Discussion

35.	8. Explain how to draw wedge dash structure of CH3CH2OH.
Answer» 8. Explain how to draw wedge dash structure of CH3CH2OH.

Discussion

36.	Inorganic polymer among the following is
Answer» Inorganic polymer among the following is

Discussion

37.	Which one of the following has the smallest bond angle¿ a) SO2 b) H2O c) SH2 d) NH
Answer» Which one of the following has the smallest bond angle¿ a) SO2 b) H2O c) SH2 d) NH

Discussion

38.	What is the change in the number of carbon atom(s) of the newly formed ring in the given reaction?
Answer» What is the change in the number of carbon atom(s) of the newly formed ring in the given reaction?

Discussion

39.	Which is an unsaturated hydrocarbon?
Answer» Which is an unsaturated hydrocarbon?

Discussion

40.	43. Why bond energy of C_C is more than N_N .C_C bond energy should decrease as c is gr14element and its size is more than N so bond length in case ofC should be more and bond energy less than N
Answer» 43. Why bond energy of C_C is more than N_N .C_C bond energy should decrease as c is gr14element and its size is more than N so bond length in case ofC should be more and bond energy less than N

Discussion

41.	Why sp2 hybridised carbon is more electronegative than sp3 hybridised carbon?
Answer» Why sp2 hybridised carbon is more electronegative than sp3 hybridised carbon?

Discussion

42.	the conductivities at infinite dilution of NH_4Cl,NaOHand NaCl are 130,218,120 ohm^{-1}cm^2eq^{-1}.If equivalent conduc†an ce ofN/100 solution of NH_4OH is 10,the degree of dissociation of
Answer» the conductivities at infinite dilution of NH_4Cl,NaOHand NaCl are 130,218,120 ohm^{-1}cm^2eq^{-1}.If equivalent conduc†an ce ofN/100 solution of NH_4OH is 10,the degree of dissociation of

Discussion

43.	What are the conditions for two atoms to have the same electronegativity?
Answer» What are the conditions for two atoms to have the same electronegativity?

Discussion

44.	ntA closed system undergoes change of state by process 1-->n nt2 for which Q12=10J and W12=-5J .the system is now returned to it's initial state by a different path 2--,> 1 for which Q21 is -3 J the work done by the gas in the process 2--> 1n
Answer» ntA closed system undergoes change of state by process 1-->n nt2 for which Q12=10J and W12=-5J .the system is now returned to it's initial state by a different path 2--,> 1 for which Q21 is -3 J the work done by the gas in the process 2--> 1n

Discussion

45.	Equal volumes of 0.015M CH3COOH And 0.015M NaOH are mixed together. what would be molar conductivity of mixture if conductivity of CH3COONa is 6.3 into 10raise to the power -4 S cm-1
Answer» Equal volumes of 0.015M CH3COOH And 0.015M NaOH are mixed together. what would be molar conductivity of mixture if conductivity of CH3COONa is 6.3 into 10raise to the power -4 S cm-1

Discussion

46.	Statements Some skies are flowers. Some flowers are rooms. Some rooms are windows Conclusions I.Some windows are flowers. II.Some rooms are skies. III.No flower is window.
Answer» Statements Some skies are flowers. Some flowers are rooms. Some rooms are windows Conclusions I.Some windows are flowers. II.Some rooms are skies. III.No flower is window.

46.

Statements Some skies are flowers. Some flowers are rooms. Some rooms are windows Conclusions I.Some windows are flowers. II.Some rooms are skies. III.No flower is window.

Answer»

Statements

Some skies are flowers.

Some flowers are rooms.

Some rooms are windows

Conclusions

I.Some windows are flowers.

II.Some rooms are skies.

III.No flower is window.

Discussion

47.	If the radius of the curve is 300 m and length of the transition curve is 80 m, the shift of the transition curve is ______ in meter.(Rounded upto two decimal places).0.89
Answer» If the radius of the curve is 300 m and length of the transition curve is 80 m, the shift of the transition curve is ______ in meter. (Rounded upto two decimal places). 0.89

Discussion

48.	Arrange NaF,MgF2 and AlF3 in the increasing order of their lattice energies.
Answer» Arrange $N a F, M g F_{2}$ and $A l F_{3}$ in the increasing order of their lattice energies.

Discussion

49.	The enthalpy of a certain reaction at 273 K is -20.75 kJ. The enthalpy of same reaction at 373 K (if heat capacities ofreactants and products is same) will be\lbrack DCE 2006\rbrack(b) -2075 kJ(а) †extemdash20.75 КJ373(d)20.75x k273(c) Zero
Answer» The enthalpy of a certain reaction at 273 K is -20.75 kJ. The enthalpy of same reaction at 373 K (if heat capacities ofreactants and products is same) will be\lbrack DCE 2006\rbrack(b) -2075 kJ(а) †extemdash20.75 КJ373(d)20.75x k273(c) Zero

Discussion

50.	If a cycle is moving with a consant velocity and buses are coming in the same direction for every 18 minutes and in opposite direction for every 6min what is the relative velocity between the cycle and the bus
Answer» If a cycle is moving with a consant velocity and buses are coming in the same direction for every 18 minutes and in opposite direction for every 6min what is the relative velocity between the cycle and the bus

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Why don't metals react with each other and share their electrons and form covalent bonds to gain stability by completeing their octet like non- metals do?

1 mole of a triatomic non-linear ideal gas is subjected to an adiabatic process from initial temperature 400 K and pressure 32 atm to final pressure 2 atm. If the expansion is carried out against vaccum, the entropy change (in cal K−1) for the system is [ln2=0.7]

Match the elements with the highest exhibited property: Column I Column II P Cs 1 atomic size Q F 2 Electron affinity R Cl 3 Electronegativity S Ar 4 Metallic character

29. The number of gram equivalents of H3PO4 present in its 0.1 molar 250 ml solution is

Which of the following pairs of compounds has same number of valence electrons and also isostructural ?

39. A galvanic cell is composed of two hydrogen electrodes, one of which is a standard one. In which of the following solutions should the other electrode be immersed to get maximum EMF A) 0.1M HCL B) 0.1M H2SO4 C) 0.1M NH4OH

The number of atoms in 4.25 grams of NH3 is approximately(need the answer with a detailed explanation)

250 ml of a gaseous mixture of C2H4 and C3H8 requires 850 ml of oxygen for complete combustion. the volume ratio of C2H4 and C3H8 in the initial mixture is

Why bond enthalpy of Carbon monoxide bond is more than that of N_2?

What is the hybridization of phosphorus in PCl5?

The degree of dissociation of I2 molecule at 10000C and under atmospheric pressure is 40% by volume. The total pressure on the gas at equilibrium so that the dissociation is reduced to 20% at the same temperature, will be

If molarity of methanol in water is 5 then the mass percentage of methanol in ghe solution is 1.21.5% 2.10.5% 3.13.8% 4.27.2

A hypothetical electromagnetic wave is shown below. Find out the frequency of the radiation.

Which of the following represents the monomer of cellulose?

[Cr(NH3)6]3+ is paramagneticwhile [Ni(CN)4]2− is diamagnetic. Explainwhy?

Pure ammonia is placed in a vessel at temperature where its dissociation constant ( ) is appreciable. At equilibrium

The unit of Kp for the following reaction at equilibrium will be : N2 (g)+3H2 (g)⇌2NH3 (g)

At 80^° C, distilled water has \lbrack H 01 concentrationequal to 1 x 10-6 mole/litre. The value of Ky at thistemperature will be(2) 1 x 10-15(4) 1 x 10-9(3) 1 x 10-6t anpraciably chanae

Which of the following is not formed by the reaction of Cl2 with CH4 in presence of sunlight?

Carbanion formation in the presence of a strong base is the easiest in -

Calculate the solubility of hydrogen in water at 25 degree Celsius if its partial pressure above the solution is 1 bar. Given that Henry's constant for hydrogen at 25 degree Celsius is 71.18 K bar.

Fraction of total volume occupied by atoms in simple cubic cell is:

The correct statement(s) regarding electrons is/are (A) they are heavier than protons (B) energy of electrons are not quantized when they are out of nuclear attraction forces (C) the energy of ionized electrons has no negative value(D) they are the constituent particles of cathode rays

which have least polar bond? H-F O-H C-H N-

What type of forces are involved in binding of substrate to the active site of enzyme?

What is the hydrisation of N atom in acetamide?

how to convert an alcohol to a cyanide?

Draw diagrams showing the formation of a double bond and a triple bond between carbon atoms in C2H4 and C2H2 molecules.

If the heat of formation of NO 2​ is 'x' [1/2N 2(g)​ +O 2(g)​ →NO 2(g)​ ] the heat of reaction N 2(g)​ +O 2(g)​ →2NO (g)​ is y and the heat of reaction 2NO (g)​ +O 2(g)​ →2NO 2​ (g)​ is z, then:

Find the number of hypervalent compounds among the following. BF3,SF4,NCl3,PCl5,SiF4,BrF5,XeF2,BeCl2

In compound HC triple bondC- CH2- CH= CH- CH3,the C2- C3 bond is the type of :(1) sp- sp2(3) sp - sp3(2) sp3 -sp3(4) sp2 sp2

PE is -27.2 eV in second or bit of He+ ion then calculate, double of total energy in first excited state of H atom

4.5 g of a solute having molar mass of 90 g/mol is dissolved in water to make a 250 mL solution. Calculate the molarity of the solution.

What is the role of cryolite in the metallurgy of aluminium?

8. Explain how to draw wedge dash structure of CH3CH2OH.

Inorganic polymer among the following is

Which one of the following has the smallest bond angle¿ a) SO2 b) H2O c) SH2 d) NH

What is the change in the number of carbon atom(s) of the newly formed ring in the given reaction?

Which is an unsaturated hydrocarbon?

43. Why bond energy of C_C is more than N_N .C_C bond energy should decrease as c is gr14element and its size is more than N so bond length in case ofC should be more and bond energy less than N

Why sp2 hybridised carbon is more electronegative than sp3 hybridised carbon?

the conductivities at infinite dilution of NH_4Cl,NaOHand NaCl are 130,218,120 ohm^{-1}cm^2eq^{-1}.If equivalent conduc†an ce ofN/100 solution of NH_4OH is 10,the degree of dissociation of

What are the conditions for two atoms to have the same electronegativity?

ntA closed system undergoes change of state by process 1-->n nt2 for which Q12=10J and W12=-5J .the system is now returned to it's initial state by a different path 2--,> 1 for which Q21 is -3 J the work done by the gas in the process 2--> 1n

Equal volumes of 0.015M CH3COOH And 0.015M NaOH are mixed together. what would be molar conductivity of mixture if conductivity of CH3COONa is 6.3 into 10raise to the power -4 S cm-1

Statements Some skies are flowers. Some flowers are rooms. Some rooms are windows Conclusions I.Some windows are flowers. II.Some rooms are skies. III.No flower is window.

If the radius of the curve is 300 m and length of the transition curve is 80 m, the shift of the transition curve is ______ in meter.(Rounded upto two decimal places).0.89

Arrange NaF,MgF2 and AlF3 in the increasing order of their lattice energies.

The enthalpy of a certain reaction at 273 K is -20.75 kJ. The enthalpy of same reaction at 373 K (if heat capacities ofreactants and products is same) will be\lbrack DCE 2006\rbrack(b) -2075 kJ(а) †extemdash20.75 КJ373(d)20.75x k273(c) Zero

If a cycle is moving with a consant velocity and buses are coming in the same direction for every 18 minutes and in opposite direction for every 6min what is the relative velocity between the cycle and the bus

If the heat of formation of NO 2 is 'x' [1/2N 2(g) +O 2(g) →NO 2(g) ] the heat of reaction N 2(g) +O 2(g) →2NO (g) is y and the heat of reaction 2NO (g) +O 2(g) →2NO 2 (g) is z, then: