46295 + Interview Questions in Chemistry

1.	How many aromatic amino acids are amongst the following amino acids?Ala, Phe, His, Tyr, Trp, Gly, Lys
Answer» How many aromatic amino acids are amongst the following amino acids? $Ala, Phe, His, Tyr, Trp, Gly, Lys$

Discussion

2.	in benzene how many pi electron are their ?
Answer» in benzene how many pi electron are their ?

Discussion

3.	Two elements 'A' and 'B' form compounds having molecular formulae AB2 and AB4 when dissolved in 20.0 g of benzene, 1.0 g of AB2 lowers the freezing pioint by 2.3∘C whereas 1.0 g of AB4 lowers the freezing point by 1.3∘C. The molal depression constant for benzene is 5.1 K kg mol−1. Calculate the atomic masses of A and B.
Answer» Two elements 'A' and 'B' form compounds having molecular formulae $A B_{2}$ and $A B_{4}$ when dissolved in $20.0 g$ of benzene, $1.0 g$ of $A B_{2}$ lowers the freezing pioint by ${2.3}^{\circ} C$ whereas $1.0 g$ of $A B_{4}$ lowers the freezing point by ${1.3}^{\circ} C$ . The molal depression constant for benzene is $5.1 K k g m o l^{- 1}$ . Calculate the atomic masses of A and B.

Discussion

4.	Write the names ofmonomers of the following polymers:
Answer» Write the names of monomers of the following polymers:

4.

Write the names ofmonomers of the following polymers:

Answer»

Write the names of
monomers of the following polymers:

Discussion

5.	In cubic close packed (CCP) pattern of a metallic crystal, the coordination number is
Answer» In cubic close packed (CCP) pattern of a metallic crystal, the coordination number is

Discussion

6.	Which of the following is a sink for CO = a.haemoglobin b.ocean c.plants
Answer» Which of the following is a sink for CO = a.haemoglobin b.ocean c.plants

Discussion

7.	Nylon 6,6 is a polyamide obtained by the reaction of:
Answer» Nylon 6,6 is a polyamide obtained by the reaction of:

Discussion

8.	what reacts with Ag2O to give ethanol and di ethyl ether. And what should be the conditions for Ag2O for these reactions
Answer» what reacts with Ag2O to give ethanol and di ethyl ether. And what should be the conditions for Ag2O for these reactions

Discussion

9.	The number of geometrical isomers of [CrCl2(en)(NH3)2], where en = ethylenediamine, is : (A) 2(B) 3(C) 4(D) 1
Answer» The number of geometrical isomers of [CrCl2(en)(NH3)2], where en = ethylenediamine, is : (A) 2(B) 3(C) 4(D) 1

Discussion

10.	The alkaline earth metal with the least density is:
Answer» The alkaline earth metal with the least density is:

Discussion

11.	14. What is inert pair effct , screening effect or shielding effect or Z-effect
Answer» 14. What is inert pair effct , screening effect or shielding effect or Z-effect

Discussion

12.	find the maximum amount of h2o produced when 3g of h2 and 16 g o2 is sparked
Answer» find the maximum amount of h2o produced when 3g of h2 and 16 g o2 is sparked

Discussion

13.	According to Lewis concept of acids and bases ethers are:
Answer» According to Lewis concept of acids and bases ethers are:

Discussion

14.	Calculate the molarity of OH- when 0.2M 20ml of Ba(OH)2 is mixed with 0.1N 30ml of Ca(OH)2
Answer» Calculate the molarity of OH- when 0.2M 20ml of Ba(OH)2 is mixed with 0.1N 30ml of Ca(OH)2

Discussion

15.	Why is ICl more reactive than I2?
Answer» Why is ICl more reactive than I₂?

Discussion

16.	if a solution containing 5 percent of subs†an ce X is isotonic with a solution containing 10g of urea per litre .The molar mass of a subs†an ce X is
Answer» if a solution containing 5 percent of subs†an ce X is isotonic with a solution containing 10g of urea per litre .The molar mass of a subs†an ce X is

Discussion

17.	The product P in the reaction is:
Answer» The product P in the reaction is:

Discussion

18.	90Th232 belongs to III group. It emits an α-particle. The daughter element belongs to
Answer» $_{90} T h^{232}$ belongs to III group. It emits an $α$ -particle. The daughter element belongs to

Discussion

19.	a) A steel wire of mass μ per unit length with a circular cross-section has a radius of 0.1 cm. The wire is of length 10 m when measured lying horizontal, and hangs from a hook on the wall. A mass of 25 kg is hung from the free end of the wire. Assuming the wire to be uniform and lateral strains
Answer» a) A steel wire of mass μ per unit length with a circular cross-section has a radius of 0.1 cm. The wire is of length 10 m when measured lying horizontal, and hangs from a hook on the wall. A mass of 25 kg is hung from the free end of the wire. Assuming the wire to be uniform and lateral strains << longitudinal strains, find the extension in the length of the wire. The density of steel is 7860 kg/m3. b) If the yield strength of steel is 2.5 × 108 N/m2, what is the maximum weight that can be hung at the lower end of the wire?

Discussion

20.	Number of mole of NaOH in 27cm^3 of 0.15 M NaOH solution is
Answer» Number of mole of NaOH in 27cm^3 of 0.15 M NaOH solution is

Discussion

21.	The complex ion which has no d-electron in the central metal atom is
Answer» The complex ion which has no d-electron in the central metal atom is

Discussion

22.	The volume of 0.05 M KMnO4 solution required to oxidize completely 2.70 g of Oxalic acid (H2C2O4.2H2O) in acidic medium will be:
Answer» The volume of $0.05 M$ $K M n O_{4}$ solution required to oxidize completely $2.70 g$ of Oxalic acid $(H_{2} C_{2} O_{4} .2 H_{2} O)$ in acidic medium will be:

Discussion

23.	Number of possible isomers for the complex [Co(en)2Br2]Cl is (en= ethylenediamine)3462
Answer» Number of possible isomers for the complex [Co(en)2Br2]Cl is (en= ethylenediamine) 3 4 6 2

Discussion

24.	In the given compounds, arrow indicate direction of inductive effect. Choose the compound(s) in which direction of inductive effect shown is correct
Answer» In the given compounds, arrow indicate direction of inductive effect. Choose the compound(s) in which direction of inductive effect shown is correct

Discussion

25.	2 gram of a dibasic acid reacts completely with 200 ml of 0.2 M NaOH solution molecular weight of the solution acid is
Answer» 2 gram of a dibasic acid reacts completely with 200 ml of 0.2 M NaOH solution molecular weight of the solution acid is

Discussion

26.	Which of the following statement is correct for CsBr3?
Answer» Which of the following statement is correct for $C s B r_{3}$ ?

Discussion

27.	Colligative properties
Answer» Colligative properties

Discussion

28.	For vaporization of water at 1 atmospheric pressure, the values of ΔH and ΔS are 54.4 kJ mol−1 and 108.8 J K−1 mol−1, respectively. The temperature (in Kelvin) when Gibb's energy change ΔG for this temperature will be zero, is:
Answer» For vaporization of water at $1$ atmospheric pressure, the values of $Δ H$ and $Δ S$ are $54.4 {kJ mol}^{- 1}$ and $108.8 {J K}^{- 1} {mol}^{- 1}$ , respectively. The temperature $(in Kelvin)$ when Gibb's energy change $Δ G$ for this temperature will be zero, is:

Discussion

29.	the s†an dard reduction potential value of three metallic cations x,y and z are 0.52,-3.303 and -1.18 v respectively the order of reducing power of the corresponding metals is
Answer» the s†an dard reduction potential value of three metallic cations x,y and z are 0.52,-3.303 and -1.18 v respectively the order of reducing power of the corresponding metals is

Discussion

30.	can chloral gives cannizaro reaction explain
Answer» can chloral gives cannizaro reaction explain

Discussion

31.	Which of the following does not give an oxide on heating 1) MgCO3 2) Li2CO3 3) ZnCO3 4) K2CO3
Answer» Which of the following does not give an oxide on heating 1) MgCO3 2) Li2CO3 3) ZnCO3 4) K2CO3

Discussion

32.	What is the relation between mole fraction and molality?
Answer» What is the relation between mole fraction and molality?

Discussion

33.	According to Le Chatelier's principle adding heat to a solid and liquid in equilibrium will cause thea) temperature to increaseb) temperature to decreaseC) amount of liquid to decreased) amount of solid to decrease
Answer» According to Le Chatelier's principle adding heat to a solid and liquid in equilibrium will cause the a) temperature to increase b) temperature to decrease C) amount of liquid to decrease d) amount of solid to decrease

Discussion

34.	A train 200 metre long enters at 5 metre per second and exits at 3 metre per second from a 300 metre long bridge .the time taken by it?
Answer» A train 200 metre long enters at 5 metre per second and exits at 3 metre per second from a 300 metre long bridge .the time taken by it?

Discussion

35.	36 For sodium atom number of electrons in m=O will be?
Answer» 36 For sodium atom number of electrons in m=O will be?

Discussion

36.	Two particles are kept on a smooth surface, move towards each other due to mutual attraction. If the position and velocities of the particles at t=0 is as shown in the figure. Then position of the center of mass at t=2 sec is
Answer» Two particles are kept on a smooth surface, move towards each other due to mutual attraction. If the position and velocities of the particles at $t = 0$ is as shown in the figure. Then position of the center of mass at $t = 2 s e c$ is

36.

Two particles are kept on a smooth surface, move towards each other due to mutual attraction. If the position and velocities of the particles at t=0 is as shown in the figure. Then position of the center of mass at t=2 sec is

Answer»

Two particles are kept on a smooth surface, move towards each other due to mutual attraction. If the position and velocities of the particles at $t = 0$ is as shown in the figure. Then position of the center of mass at $t = 2 s e c$ is

Discussion

37.	Is isolated system and adiabatic system the same ?
Answer» Is isolated system and adiabatic system the same ?

Discussion

38.	A liquid at 500 K has a vapour pressure of 200 torr. Calculate the vapour pressure at 1000 K if the enthalpy of vapourisation of the substance is nearly 8.314 kJ mol−1
Answer» A liquid at $500 K$ has a vapour pressure of $200 t o r r$ . Calculate the vapour pressure at $1000 K$ if the enthalpy of vapourisation of the substance is nearly $8.314 k J m o l^{- 1}$

Discussion

39.	Which carbocation is more stablem- methylphenol carbocation Or m- methyl aniline carbocation
Answer» Which carbocation is more stable m- methylphenol carbocation Or m- methyl aniline carbocation

Discussion

40.	Benzyl chloride (C6H5CH2Cl) can be prepared from toluene by chlorination with
Answer» Benzyl chloride $(C_{6} H_{5} C H_{2} C l)$ can be prepared from toluene by chlorination with

Discussion

41.	What is the importance of valence bond theory?
Answer» What is the importance of valence bond theory?

Discussion

42.	A bottle of aqueous h2o2 solution is labelled as 28V h202 and density of the solution in Gm/ml is 1.25.find molarity.,molality.
Answer» A bottle of aqueous h2o2 solution is labelled as 28V h202 and density of the solution in Gm/ml is 1.25.find molarity.,molality.

Discussion

43.	The energy of second Bohr orbit of the hydrogen atom is 328 kJ mol−1, hence the energy of fourth Bohr orbit would be:
Answer» The energy of second Bohr orbit of the hydrogen atom is $328 k J m o l^{- 1}$ , hence the energy of fourth Bohr orbit would be:

Discussion

44.	8. If an ionic solid XY (X & Y are monovalent ions) isdoped with 10-2 mole % of another ionic solid Athen the concentration of the cation vacanciescreated is
Answer» 8. If an ionic solid XY (X & Y are monovalent ions) isdoped with 10-2 mole % of another ionic solid Athen the concentration of the cation vacanciescreated is

Discussion

45.	32. Two moles of an ideal monoatomic gases are allowed to expand adiabatically and reversibly from 300 K and 200 K . The work done in the system is (Cv = 12.5 J/K/mole )
Answer» 32. Two moles of an ideal monoatomic gases are allowed to expand adiabatically and reversibly from 300 K and 200 K . The work done in the system is (Cv = 12.5 J/K/mole )

Discussion

46.	If K=1.19×10-4 at 623K. Find 🔼G
Answer» If K=1.19×10-4 at 623K. Find 🔼G

Discussion

47.	A fresh radioactive mixture has short lived species A and B. Both emit α − particles initially at 8000 particles per minute. 20 minutes later, they emit 3500 α − particles per minute. If the half – lives of the species A and B are 10 minutes and 500 hours respectively, then the ratio of activities of A : B in the initial mixture was:
Answer» A fresh radioactive mixture has short lived species $A$ and $B$ . Both emit $α$ − particles initially at 8000 particles per minute. 20 minutes later, they emit 3500 $α$ − particles per minute. If the half – lives of the species $A$ and $B$ are 10 minutes and 500 hours respectively, then the ratio of activities of A : B in the initial mixture was:

Discussion

48.	Nitricoxide reacts with Br2and gives nitrosyl bromide as per reaction given below:When0.087 mol of NO and 0.0437 mol of Br2are mixed in a closed container at constant temperature, 0.0518 molof NOBr is obtained at equilibrium. Calculate equilibrium amount ofNO and Br2.
Answer» Nitric oxide reacts with Br₂ and gives nitrosyl bromide as per reaction given below: When 0.087 mol of NO and 0.0437 mol of Br₂ are mixed in a closed container at constant temperature, 0.0518 mol of NOBr is obtained at equilibrium. Calculate equilibrium amount of NO and Br₂.

48.

Nitricoxide reacts with Br2and gives nitrosyl bromide as per reaction given below:When0.087 mol of NO and 0.0437 mol of Br2are mixed in a closed container at constant temperature, 0.0518 molof NOBr is obtained at equilibrium. Calculate equilibrium amount ofNO and Br2.

Answer»

Nitric
oxide reacts with Br₂
and gives nitrosyl bromide as per reaction given below:

When
0.087 mol of NO and 0.0437 mol of Br₂
are mixed in a closed container at constant temperature, 0.0518 mol
of NOBr is obtained at equilibrium. Calculate equilibrium amount of
NO and Br₂.

Discussion

49.	An electron in a h atom in its ground state absorbs 1.5 times as much energy as the minimum energy required for it to escape from the atom. What is The wavelength of the emmited electron.
Answer» An electron in a h atom in its ground state absorbs 1.5 times as much energy as the minimum energy required for it to escape from the atom. What is The wavelength of the emmited electron.

Discussion

50.	The change in internal energy (ΔfU) during the formation of CH4(g) at 27∘ is −393 kJ mol−1. The value of change in enthalpy during the formation of CH4(g) at that temperature is
Answer» The change in internal energy $(Δ_{f} U)$ during the formation of $C H_{4} (g)$ at $27^{\circ}$ is $- 393 {kJ mol}^{- 1}$ . The value of change in enthalpy during the formation of $C H_{4} (g)$ at that temperature is

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

How many aromatic amino acids are amongst the following amino acids?Ala, Phe, His, Tyr, Trp, Gly, Lys

in benzene how many pi electron are their ?

Write the names ofmonomers of the following polymers:

In cubic close packed (CCP) pattern of a metallic crystal, the coordination number is

Which of the following is a sink for CO = a.haemoglobin b.ocean c.plants

Nylon 6,6 is a polyamide obtained by the reaction of:

what reacts with Ag2O to give ethanol and di ethyl ether. And what should be the conditions for Ag2O for these reactions

The number of geometrical isomers of [CrCl2(en)(NH3)2], where en = ethylenediamine, is : (A) 2(B) 3(C) 4(D) 1

The alkaline earth metal with the least density is:

14. What is inert pair effct , screening effect or shielding effect or Z-effect

find the maximum amount of h2o produced when 3g of h2 and 16 g o2 is sparked

According to Lewis concept of acids and bases ethers are:

Calculate the molarity of OH- when 0.2M 20ml of Ba(OH)2 is mixed with 0.1N 30ml of Ca(OH)2

Why is ICl more reactive than I2?

if a solution containing 5 percent of subs†an ce X is isotonic with a solution containing 10g of urea per litre .The molar mass of a subs†an ce X is

The product P in the reaction is:

90Th232 belongs to III group. It emits an α-particle. The daughter element belongs to

a) A steel wire of mass μ per unit length with a circular cross-section has a radius of 0.1 cm. The wire is of length 10 m when measured lying horizontal, and hangs from a hook on the wall. A mass of 25 kg is hung from the free end of the wire. Assuming the wire to be uniform and lateral strains

Number of mole of NaOH in 27cm^3 of 0.15 M NaOH solution is

The complex ion which has no d-electron in the central metal atom is

The volume of 0.05 M KMnO4 solution required to oxidize completely 2.70 g of Oxalic acid (H2C2O4.2H2O) in acidic medium will be:

Number of possible isomers for the complex [Co(en)2Br2]Cl is (en= ethylenediamine)3462

In the given compounds, arrow indicate direction of inductive effect. Choose the compound(s) in which direction of inductive effect shown is correct

2 gram of a dibasic acid reacts completely with 200 ml of 0.2 M NaOH solution molecular weight of the solution acid is

Which of the following statement is correct for CsBr3?

Colligative properties

For vaporization of water at 1 atmospheric pressure, the values of ΔH and ΔS are 54.4 kJ mol−1 and 108.8 J K−1 mol−1, respectively. The temperature (in Kelvin) when Gibb's energy change ΔG for this temperature will be zero, is:

the s†an dard reduction potential value of three metallic cations x,y and z are 0.52,-3.303 and -1.18 v respectively the order of reducing power of the corresponding metals is

can chloral gives cannizaro reaction explain

Which of the following does not give an oxide on heating 1) MgCO3 2) Li2CO3 3) ZnCO3 4) K2CO3

What is the relation between mole fraction and molality?

According to Le Chatelier's principle adding heat to a solid and liquid in equilibrium will cause thea) temperature to increaseb) temperature to decreaseC) amount of liquid to decreased) amount of solid to decrease

A train 200 metre long enters at 5 metre per second and exits at 3 metre per second from a 300 metre long bridge .the time taken by it?

36 For sodium atom number of electrons in m=O will be?

Two particles are kept on a smooth surface, move towards each other due to mutual attraction. If the position and velocities of the particles at t=0 is as shown in the figure. Then position of the center of mass at t=2 sec is

Is isolated system and adiabatic system the same ?

A liquid at 500 K has a vapour pressure of 200 torr. Calculate the vapour pressure at 1000 K if the enthalpy of vapourisation of the substance is nearly 8.314 kJ mol−1

Which carbocation is more stablem- methylphenol carbocation Or m- methyl aniline carbocation

Benzyl chloride (C6H5CH2Cl) can be prepared from toluene by chlorination with

What is the importance of valence bond theory?

A bottle of aqueous h2o2 solution is labelled as 28V h202 and density of the solution in Gm/ml is 1.25.find molarity.,molality.

The energy of second Bohr orbit of the hydrogen atom is 328 kJ mol−1, hence the energy of fourth Bohr orbit would be:

8. If an ionic solid XY (X & Y are monovalent ions) isdoped with 10-2 mole % of another ionic solid Athen the concentration of the cation vacanciescreated is

32. Two moles of an ideal monoatomic gases are allowed to expand adiabatically and reversibly from 300 K and 200 K . The work done in the system is (Cv = 12.5 J/K/mole )

If K=1.19×10-4 at 623K. Find 🔼G

Nitricoxide reacts with Br2and gives nitrosyl bromide as per reaction given below:When0.087 mol of NO and 0.0437 mol of Br2are mixed in a closed container at constant temperature, 0.0518 molof NOBr is obtained at equilibrium. Calculate equilibrium amount ofNO and Br2.

An electron in a h atom in its ground state absorbs 1.5 times as much energy as the minimum energy required for it to escape from the atom. What is The wavelength of the emmited electron.

The change in internal energy (ΔfU) during the formation of CH4(g) at 27∘ is −393 kJ mol−1. The value of change in enthalpy during the formation of CH4(g) at that temperature is