46295 + Interview Questions in Chemistry

1.	Name the method used for refining of copper metal.
Answer» Name the method used for refining of copper metal.

Discussion

2.	What is the ratio of empirical formula mass to molecular formula mass of benzene
Answer» What is the ratio of empirical formula mass to molecular formula mass of benzene

Discussion

3.	Identify the correct formula for hexaaquamanganese(II) ion.
Answer» Identify the correct formula for hexaaquamanganese(II) ion.

Discussion

4.	Valency of nitrogen in the Zwitter ion form of sulphanilic acid
Answer» Valency of nitrogen in the Zwitter ion form of sulphanilic acid

Discussion

5.	How many grams of sodium carbonate is obtained on heating 42 g of NaHCO3(s)?
Answer» How many grams of sodium carbonate is obtained on heating $42 g$ of $N a H C O_{3 (s)}$ ?

Discussion

6.	how to find maximum no. of bond if (i)co2 (ii) h2o(iii) h2s are given
Answer» how to find maximum no. of bond if (i)co2 (ii) h2o(iii) h2s are given

Discussion

7.	ClCH2COOH is heated with fuming HNO3in the presence of AgNO3 in Carius tube. After filtration andwashing the precipitate obtained is:
Answer» ClCH₂COOH is heated with fuming HNO₃ in the presence of AgNO₃ in Carius tube. After filtration and washing the precipitate obtained is:

Discussion

8.	Equal masses of H_{2 }O_2 and Methane have been taken in a container of volume V at temperature 27 degree celsius in identical conditions the ratio of the volume of the gases H_{2 }:O_2:Methane would be
Answer» Equal masses of H_{2 }O_2 and Methane have been taken in a container of volume V at temperature 27 degree celsius in identical conditions the ratio of the volume of the gases H_{2 }:O_2:Methane would be

Discussion

9.	Choose the correct sequence of events in Carbon Cycle. (a) CO2 in atmosphere → decomposers → organic carbon in animals → organic carbon in plants(b) CO2 in atmosphere → organic carbon in plants → organic carbon in animals → inorganic carbon in soil(c) Inorganic carbonates in water → organic carbon in plants → organic carbon in animals → scavengers
Answer» Choose the correct sequence of events in Carbon Cycle. (a) $C O_{2}$ in atmosphere → decomposers → organic carbon in animals → organic carbon in plants (b) $C O_{2}$ in atmosphere → organic carbon in plants → organic carbon in animals → inorganic carbon in soil (c) Inorganic carbonates in water → organic carbon in plants → organic carbon in animals → scavengers

Discussion

10.	Which of the following gases will have a density of 1.8 g L−1 at 760 torr pressure and 27∘C?
Answer» Which of the following gases will have a density of $1.8 {g L}^{- 1}$ at 760 torr pressure and $27^{\circ} C$ ?

Discussion

11.	In a photoelectric effect experiment the threshold wavelength of light is 380 nm. If the wavelength of incident light is 260 nm, the maximum kinetic energy of emitted electrons will be Given E (in eV) =1237λ( in nm)
Answer» In a photoelectric effect experiment the threshold wavelength of light is $380 nm$ . If the wavelength of incident light is $260 nm$ , the maximum kinetic energy of emitted electrons will be Given $E (in eV)$ $= \frac{1237}{λ (in nm)}$

Discussion

12.	Major product in the following reaction is:
Answer» Major product in the following reaction is:

12.

Major product in the following reaction is:

Answer»

Major product in the following reaction is:

Discussion

13.	The KSP of Agl is 1.5 × 10−16. On mixing equal volumes of the following solutions, precipitation will occur only with
Answer» The $K_{S P}$ of Agl is $1.5 \times 10^{- 16}$ . On mixing equal volumes of the following solutions, precipitation will occur only with

13.

The KSP of Agl is 1.5 × 10−16. On mixing equal volumes of the following solutions, precipitation will occur only with

Answer»

The $K_{S P}$ of Agl is $1.5 \times 10^{- 16}$ . On mixing equal volumes of the following

solutions, precipitation will occur only with

Discussion

14.	38. The effective radius of iron atom is 1.42 Angstrom. It has rock salt like structure,Calculate its density(Fe=56smu)?
Answer» 38. The effective radius of iron atom is 1.42 Angstrom. It has rock salt like structure,Calculate its density(Fe=56smu)?

Discussion

15.	Write the effects involved in chemical chages?
Answer» Write the effects involved in chemical chages?

Discussion

16.	19.Explain Hybridisation of CH3 radical ?
Answer» 19.Explain Hybridisation of CH3 radical ?

Discussion

17.	Which will undergo reaction with ammonical AgNO3?
Answer» Which will undergo reaction with ammonical $A g N O_{3}$ ?

Discussion

18.	The maximum number of electrons in d subshell is equal to
Answer» The maximum number of electrons in d subshell is equal to

Discussion

19.	50.0kg of N↓2 (g) and 10.0kg of H↓2(g). Calculate the amount of NH↓3 (g) formed. Identify the limiting reagent in the production of NH↓3 in this situation.
Answer» 50.0kg of N↓2 (g) and 10.0kg of H↓2(g). Calculate the amount of NH↓3 (g) formed. Identify the limiting reagent in the production of NH↓3 in this situation.

Discussion

20.	The correct decreasing order of acidic strength is:
Answer» The correct decreasing order of acidic strength is:

Discussion

21.	13.Total number of sp hybridised carbon atom in the following structure is CH³–CH=C=C=CH–C triple bond CH
Answer» 13.Total number of sp hybridised carbon atom in the following structure is CH³–CH=C=C=CH–C triple bond CH

Discussion

22.	The IUPAC name of β-ethoxy-α-hydroxypropanic acid is
Answer» The IUPAC name of $β$ -ethoxy- $α$ -hydroxypropanic acid is

Discussion

23.	what are the difference among metallic , covalent and van der waals radius ?
Answer» what are the difference among metallic , covalent and van der waals radius ?

Discussion

24.	Haemoglobin contains 0.35% Fe. Each haemoglobin unit contains four atoms of Fe (56 g/mol). The molar weight of haemoglobin (in kg) is:
Answer» Haemoglobin contains $0.35 % F e .$ Each haemoglobin unit contains four atoms of $F e (56 g/mol) .$ The molar weight of haemoglobin (in kg) is:

Discussion

25.	Which of the following is a primary amine:
Answer» Which of the following is a primary amine:

Discussion

26.	The pH of 0.1 M solution of the following salts increases in the order
Answer» The pH of 0.1 M solution of the following salts increases in the order

26.

The pH of 0.1 M solution of the following salts increases in the order

Answer»

The pH of 0.1 M solution of the following salts increases in the order

Discussion

27.	Why according to 1st law of thermodynamics if temperature decreases dU is negative?
Answer» Why according to 1st law of thermodynamics if temperature decreases dU is negative?

Discussion

28.	Question 13 At a given temperature, osmotic pressure of a concentrated solution of asubstance.......... . (a) is higher than that of a dilute solution (b) is lower than that of a dilute solution (c) is same as that of a dilute solution (d) cannot be compared with osmotic pressure of dilute solution.
Answer» Question 13 At a given temperature, osmotic pressure of a concentrated solution of asubstance.......... . (a) is higher than that of a dilute solution (b) is lower than that of a dilute solution (c) is same as that of a dilute solution (d) cannot be compared with osmotic pressure of dilute solution.

Discussion

29.	complex compounds with polydentate ligands involving ring structures are known as?
Answer» complex compounds with polydentate ligands involving ring structures are known as?

Discussion

30.

Column-I and Column-II contains four entries each. Entries of Column-I are to be matched with some entries of Column-II. One or more than one entries of Column-I may have the matching with the same entries of Column-II.List -IList -I(i) Tetragonal and hexagonal(P) a=b≠c(ii) Cubic and Rhombohedral(Q) α=β=γ(iii) Monoclinic and triclinic(R) a≠b≠c(iv) Orthorhombic(S) a=b=cWhich of the following option has the correct combination considering List-I and List-II

Answer»

Column-I and Column-II contains four entries each. Entries of Column-I are to be matched with some entries of Column-II. One or more than one entries of Column-I may have the matching with the same entries of Column-II.

List -I	List -I
(i) Tetragonal and hexagonal	(P) $a = b \neq c$
(ii) Cubic and Rhombohedral	(Q) $α = β = γ$
(iii) Monoclinic and triclinic	(R) $a \neq b \neq c$
(iv) Orthorhombic	(S) $a = b = c$

Which of the following option has the correct combination considering List-I and List-II

Discussion

31.	HgCl2 and I2 both when dissolved in water containing I− ions, the pair of species formed is:
Answer» $H g C l_{2}$ and $I_{2}$ both when dissolved in water containing $I^{-}$ ions, the pair of species formed is:

Discussion

32.	How much heat energy must be supplied to 14 g of nitrogen gas at room temperature to raise its temperature by 40∘C at a constant pressure?
Answer» How much heat energy must be supplied to 14 g of nitrogen gas at room temperature to raise its temperature by $40^{\circ} C$ at a constant pressure?

Discussion

33.	Why Cl ions form ccp structure in rock salt structure?
Answer» Why Cl ions form ccp structure in rock salt structure?

Discussion

34.	1. In a zero order reaction 20 percent of the reaction complete in 10 s.how much time it will take to complete 50 percent of the reaction?
Answer» 1. In a zero order reaction 20 percent of the reaction complete in 10 s.how much time it will take to complete 50 percent of the reaction?

Discussion

35.	The freezing point of equimolal aqueous solutions will be highest for Glucose La(no3)2 Ca(no3)2 C6h5nh3cl Urea Benzene
Answer» The freezing point of equimolal aqueous solutions will be highest for Glucose La(no3)2 Ca(no3)2 C6h5nh3cl Urea Benzene

Discussion

36.	13.What is the basicity of Caro's acid?
Answer» 13.What is the basicity of Caro's acid?

Discussion

37.	From a circular disc of radius R a square is cut out with a radius as its diagonal. The distance of the centre of mass of the remainder from the centre of the disc is:
Answer» From a circular disc of radius R a square is cut out with a radius as its diagonal. The distance of the centre of mass of the remainder from the centre of the disc is:

Discussion

38.	Which of the following compounds is the reactant in Rosenmund's reaction?
Answer» Which of the following compounds is the reactant in Rosenmund's reaction?

Discussion

39.	A gas that cannot be collected over water is:
Answer» A gas that cannot be collected over water is:

Discussion

40.	20. Arrange the element of 3d series in decreasing order of their magnetic moment
Answer» 20. Arrange the element of 3d series in decreasing order of their magnetic moment

Discussion

41.	H2S is a toxic gas with rotten egg like smell , is used for the qualitative analysis . If the solubility of H2S in water at STP is 0.195M , calculate Henry's law constant .
Answer» $H_{2} S$ is a toxic gas with rotten egg like smell , is used for the qualitative analysis . If the solubility of $H_{2} S$ in water at STP is 0.195M , calculate Henry's law constant .

Discussion

42.	Isoelectric point of alanine is 6.0 while ionization constant of COOH of alanine is 5.0×10−3. Find the pH at which concentrations of the given species are same. [log 5 = 0.7]
Answer» Isoelectric point of alanine is $6.0$ while ionization constant of $C O O H$ of alanine is $5.0 \times 10^{- 3}$ . Find the $p H$ at which concentrations of the given species are same. [log 5 = 0.7]

Discussion

43.	Calculate the equivalent conductivity of 1 M aqueous diprotic acid solution if its conductivity is 50×10−2 ohm−1cm−1.
Answer» Calculate the equivalent conductivity of $1 M$ aqueous diprotic acid solution if its conductivity is $50 \times 10^{- 2} o h m^{- 1} c m^{- 1}$ .

Discussion

44.	What is oxidation state of an element?
Answer» What is oxidation state of an element?

Discussion

45.	What is the graph of {1[A]} vs time for second order reaction looks like?
Answer» What is the graph of ${\frac{1}{[A]}}$ vs time for second order reaction looks like?

Discussion

46.	What is the relative humidity on a day ,when partial pressure of water vapour is 0.012×10^5 Pa and temperature is 12^0c?The vapour pressure of water at this temperature is 0.016×10^{5 }Pa
Answer» What is the relative humidity on a day ,when partial pressure of water vapour is 0.012×10^5 Pa and temperature is 12^0c?The vapour pressure of water at this temperature is 0.016×10^{5 }Pa

Discussion

47.	Complete the dialogue.
Answer» Complete the dialogue.

Discussion

48.	What is cinesubstitution reaction.
Answer» What is cinesubstitution reaction.

Discussion

49.	A hydrogen atom is in ground state. In order to get six lines in its emission spectrum, wavelength of incident radiation should be(Take: hc=12425 eV˙A)
Answer» A hydrogen atom is in ground state. In order to get six lines in its emission spectrum, wavelength of incident radiation should be $(Take: h c = 12425 eV ˙ A)$

Discussion

50.	A ball of mass 1 kg is dropped from 20 m height on ground and it rebounds to height 5 M find magnitude of change in momentum during its collision with the ground
Answer» A ball of mass 1 kg is dropped from 20 m height on ground and it rebounds to height 5 M find magnitude of change in momentum during its collision with the ground

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Name the method used for refining of copper metal.

What is the ratio of empirical formula mass to molecular formula mass of benzene

Identify the correct formula for hexaaquamanganese(II) ion.

Valency of nitrogen in the Zwitter ion form of sulphanilic acid

How many grams of sodium carbonate is obtained on heating 42 g of NaHCO3(s)?

how to find maximum no. of bond if (i)co2 (ii) h2o(iii) h2s are given

ClCH2COOH is heated with fuming HNO3in the presence of AgNO3 in Carius tube. After filtration andwashing the precipitate obtained is:

Equal masses of H_{2 }O_2 and Methane have been taken in a container of volume V at temperature 27 degree celsius in identical conditions the ratio of the volume of the gases H_{2 }:O_2:Methane would be

Which of the following gases will have a density of 1.8 g L−1 at 760 torr pressure and 27∘C?

In a photoelectric effect experiment the threshold wavelength of light is 380 nm. If the wavelength of incident light is 260 nm, the maximum kinetic energy of emitted electrons will be Given E (in eV) =1237λ( in nm)

Major product in the following reaction is:

The KSP of Agl is 1.5 × 10−16. On mixing equal volumes of the following solutions, precipitation will occur only with

38. The effective radius of iron atom is 1.42 Angstrom. It has rock salt like structure,Calculate its density(Fe=56smu)?

Write the effects involved in chemical chages?

19.Explain Hybridisation of CH3 radical ?

Which will undergo reaction with ammonical AgNO3?

The maximum number of electrons in d subshell is equal to

50.0kg of N↓2 (g) and 10.0kg of H↓2(g). Calculate the amount of NH↓3 (g) formed. Identify the limiting reagent in the production of NH↓3 in this situation.

The correct decreasing order of acidic strength is:

13.Total number of sp hybridised carbon atom in the following structure is CH³–CH=C=C=CH–C triple bond CH

The IUPAC name of β-ethoxy-α-hydroxypropanic acid is

what are the difference among metallic , covalent and van der waals radius ?

Haemoglobin contains 0.35% Fe. Each haemoglobin unit contains four atoms of Fe (56 g/mol). The molar weight of haemoglobin (in kg) is:

Which of the following is a primary amine:

The pH of 0.1 M solution of the following salts increases in the order

Why according to 1st law of thermodynamics if temperature decreases dU is negative?

complex compounds with polydentate ligands involving ring structures are known as?

HgCl2 and I2 both when dissolved in water containing I− ions, the pair of species formed is:

How much heat energy must be supplied to 14 g of nitrogen gas at room temperature to raise its temperature by 40∘C at a constant pressure?

Why Cl ions form ccp structure in rock salt structure?

1. In a zero order reaction 20 percent of the reaction complete in 10 s.how much time it will take to complete 50 percent of the reaction?

The freezing point of equimolal aqueous solutions will be highest for Glucose La(no3)2 Ca(no3)2 C6h5nh3cl Urea Benzene

13.What is the basicity of Caro's acid?

From a circular disc of radius R a square is cut out with a radius as its diagonal. The distance of the centre of mass of the remainder from the centre of the disc is:

Which of the following compounds is the reactant in Rosenmund's reaction?

A gas that cannot be collected over water is:

20. Arrange the element of 3d series in decreasing order of their magnetic moment

H2S is a toxic gas with rotten egg like smell , is used for the qualitative analysis . If the solubility of H2S in water at STP is 0.195M , calculate Henry's law constant .

Isoelectric point of alanine is 6.0 while ionization constant of COOH of alanine is 5.0×10−3. Find the pH at which concentrations of the given species are same. [log 5 = 0.7]

Calculate the equivalent conductivity of 1 M aqueous diprotic acid solution if its conductivity is 50×10−2 ohm−1cm−1.

What is oxidation state of an element?

What is the graph of {1[A]} vs time for second order reaction looks like?

What is the relative humidity on a day ,when partial pressure of water vapour is 0.012×10^5 Pa and temperature is 12^0c?The vapour pressure of water at this temperature is 0.016×10^{5 }Pa

Complete the dialogue.

What is cinesubstitution reaction.

A hydrogen atom is in ground state. In order to get six lines in its emission spectrum, wavelength of incident radiation should be(Take: hc=12425 eV˙A)

A ball of mass 1 kg is dropped from 20 m height on ground and it rebounds to height 5 M find magnitude of change in momentum during its collision with the ground