46295 + Interview Questions in Chemistry

1.	Which one of the following aqueous solutions will exhibit highest boiling point?
Answer» Which one of the following aqueous solutions will exhibit highest boiling point?

Discussion

2.	In this sequence X, Y and Z are respectively
Answer» In this sequence X, Y and Z are respectively

2.

In this sequence X, Y and Z are respectively

Answer»

In this sequence X, Y and Z are respectively

Discussion

3.	Pure 'X' is a colourless liquid but on standing changes to brown colour.'X' has no action on litmus but forms salt with HCl and H2SO4. It is steam volatile. Then 'X' would be
Answer» Pure 'X' is a colourless liquid but on standing changes to brown colour.'X' has no action on litmus but forms salt with HCl and H2SO4. It is steam volatile. Then 'X' would be

Discussion

4.	Which of the following chemical reaction is associated with the Deacon process?
Answer» Which of the following chemical reaction is associated with the Deacon process?

Discussion

5.	What type of lattice is found in potassium chloride crystal [MP PMT 1996]
Answer» What type of lattice is found in potassium chloride crystal [MP PMT 1996]

5.

What type of lattice is found in potassium chloride crystal [MP PMT 1996]

Answer»

What type of lattice is found in potassium chloride crystal

[MP PMT 1996]

Discussion

6.	logKPKC+logRT=0 is a relationship for the reaction:
Answer» $log \frac{K_{P}}{K_{C}} + log R T = 0$ is a relationship for the reaction:

Discussion

7.	While charging the lead storage battery, ………
Answer» While charging the lead storage battery, ………

Discussion

8.	1mole of NaCl is doped with 10−5 mole of SrCl2. The number of cationic vacancies in the crystal lattice will be:
Answer» 1mole of $N a C l$ is doped with $10^{- 5}$ mole of $S r C l_{2} .$ The number of cationic vacancies in the crystal lattice will be:

Discussion

9.	Thomson's plum pudding model explained:
Answer» Thomson's plum pudding model explained:

Discussion

10.	In the following reaction : 2NO+O2k′→2NO2 What is the predicted rate law, if the mechanism is given as : NO+O2Keq⇌NO3 (Fast) NO3+NOk1−→NO2+NO2 (Slow)
Answer» In the following reaction : $2 N O + O_{2} k^{'} \to 2 N O_{2}$ What is the predicted rate law, if the mechanism is given as : $N O + O_{2}_{e q} N O_{3}$ (Fast) $N O_{3} + N O k_{1} - \to N O_{2} + N O_{2}$ (Slow)

Discussion

11.	If the observed dipole moment of HF is 1.944 D and the bond length of HF is 90 pm. Find the % covalent character of HF.
Answer» If the observed dipole moment of HF is 1.944 D and the bond length of HF is 90 pm. Find the $%$ covalent character of HF.

Discussion

12.	Consider the following structures and calculate value of (P2–Q2) Where P = Total number of correct structure representation Q = Total number of incorrect structure representation
Answer» Consider the following structures and calculate value of $(P^{2} - Q^{2})$ Where P = Total number of correct structure representation Q = Total number of incorrect structure representation

Discussion

13.	How many litres of water must be added to 1 litre of an aqueous solution of HCl with a pH of 1 to create an aqueous solution with pH of 2?
Answer» How many litres of water must be added to 1 litre of an aqueous solution of HCl with a pH of 1 to create an aqueous solution with pH of 2?

Discussion

14.	The alkene formed after the rearrangement of the given compound at low temperatures will be:
Answer» The alkene formed after the rearrangement of the given compound at low temperatures will be:

Discussion

15.	Calculate the minimum concentration of CO2−3 required to precipitate NiCO3 in a solution containing 2.0×10−5 M of Ni2+? Given : (Ksp for NiCO3=6.6×10−10)
Answer» Calculate the minimum concentration of $C O_{3}^{2 -}$ required to precipitate $N i C O_{3}$ in a solution containing $2.0 \times 10^{- 5} M$ of $N i^{2 +} ?$ Given : ( $K_{s p}$ for $N i C O_{3} = 6.6 \times 10^{- 10}$ )

Discussion

16.	"x" will be:
Answer» "x" will be:

Discussion

17.	(i) Write down the IUPAC name of the following complex: [Co(NH3)5(NO2)](NO3)2 (ii) Write the formula for the following complex: Potassium tetracyanidonickelate(II)
Answer» (i) Write down the IUPAC name of the following complex: $[C o (N H_{3})_{5} (N O_{2})] (N O_{3})_{2}$ (ii) Write the formula for the following complex: Potassium tetracyanidonickelate(II)

Discussion

18.	What is the formula to find number of resonating structures in an organic compound?
Answer» What is the formula to find number of resonating structures in an organic compound?

Discussion

19.	How to calculate covalent radius?
Answer» How to calculate covalent radius?

Discussion

20.	No of structural isomers of C5H8Br2
Answer» No of structural isomers of C5H8Br2

Discussion

21.	Consider figure and mark the correct option. (a) Activation energy of forward reaction is E1 +E2 and product is less stable than reactant (b) Activation energy of forward reaction is E1 +E2 and product is more stable than reactant (c) Activation energy of both forward and backward reaction is E1 +E2 and reactant is more stable than product (d) Activation energy of backward reaction is E1 and product is more stable than reactant
Answer» Consider figure and mark the correct option. (a) Activation energy of forward reaction is $E_{1}$ + $E_{2}$ and product is less stable than reactant (b) Activation energy of forward reaction is $E_{1}$ + $E_{2}$ and product is more stable than reactant (c) Activation energy of both forward and backward reaction is $E_{1}$ + $E_{2}$ and reactant is more stable than product (d) Activation energy of backward reaction is $E_{1}$ and product is more stable than reactant

21.

Consider figure and mark the correct option. (a) Activation energy of forward reaction is E1 +E2 and product is less stable than reactant (b) Activation energy of forward reaction is E1 +E2 and product is more stable than reactant (c) Activation energy of both forward and backward reaction is E1 +E2 and reactant is more stable than product (d) Activation energy of backward reaction is E1 and product is more stable than reactant

Answer»

Consider figure and mark the correct option.

(a) Activation energy of forward reaction is $E_{1}$ + $E_{2}$ and product is less stable than reactant

(b) Activation energy of forward reaction is $E_{1}$ + $E_{2}$ and product is more stable than reactant

(c) Activation energy of both forward and backward reaction is $E_{1}$ + $E_{2}$ and reactant is more stable than product

(d) Activation energy of backward reaction is $E_{1}$ and product is more stable than reactant

Discussion

22.	Identify the correct structure of 3-methylidenepenta-1,4-diene.
Answer» Identify the correct structure of 3-methylidenepenta-1,4-diene.

Discussion

23.	The enthalpies of elements in their standard states are taken as zero. The enthalpy of formation of a compound (a) is always negative (b) is always positive (c) may be positive or negative (d) is never negative
Answer» The enthalpies of elements in their standard states are taken as zero. The enthalpy of formation of a compound (a) is always negative (b) is always positive (c) may be positive or negative (d) is never negative

Discussion

24.	Action of heat on potassium permanganate at 746K results in formation of:
Answer» Action of heat on potassium permanganate at 746K results in formation of:

Discussion

25.	Which of the following is the most abundant mineral in animal body?
Answer» Which of the following is the most abundant mineral in animal body?

Discussion

26.	The pH at which Ni(OH)2 begins to precipitate from a solution containing 10−3M Ni2+ ions: [Ksp of (Ni(OH)2=10−11]
Answer» The $p H$ at which $N i (O H)_{2}$ begins to precipitate from a solution containing $10^{- 3} M$ $N i^{2 +}$ ions: $[K_{s p}$ of $(N i (O H)_{2} = 10^{- 11}]$

Discussion

27.	An ideal gas has molar heat capacity Cv at constant volume. Then molar heat capacity of this gas as a function of its volume V, if it undergoes process T=T0eαV is
Answer» An ideal gas has molar heat capacity $C_{v}$ at constant volume. Then molar heat capacity of this gas as a function of its volume V, if it undergoes process $T = T_{0} e^{α V}$ is

Discussion

28.	The incorrect hydrated radius order is:
Answer» The incorrect hydrated radius order is:

Discussion

29.	The purpose of smelting an ore is to:
Answer» The purpose of smelting an ore is to:

Discussion

30.	12 mole of helium gas is contained in a container at 27∘C. Find the heat energy needed to double the pressure of the gas, keeping its volume constant. Given heat capacity of the gas is 3 J/g-K.
Answer» $\frac{1}{2}$ mole of helium gas is contained in a container at $27^{\circ} C$ . Find the heat energy needed to double the pressure of the gas, keeping its volume constant. Given heat capacity of the gas is 3 J/g-K.

Discussion

31.	35 mL of 1.5 M Pb(NO3)2 solution is mixed with 15 mL of 0.2 M KI solution. The maximum number of moles of PbI2 that can be precipitated is
Answer» $35 m L$ of $1.5 M P b (N O_{3})_{2}$ solution is mixed with $15 m L$ of $0.2 M K I$ solution. The maximum number of moles of $P b I_{2}$ that can be precipitated is

Discussion

32.	How much quantity of electricity has to be passed through 200 ml of 0.5M CuSO4 solution to completely deposit copper?
Answer» How much quantity of electricity has to be passed through 200 ml of 0.5M $C u S O_{4}$ solution to completely deposit copper?

Discussion

33.	Which of the following has a bond formed by overlap of sp−sp3 hybrid orbitals
Answer» Which of the following has a bond formed by overlap of $s p - s p^{3}$ hybrid orbitals

Discussion

34.	Which of the following molecules/ions does not contain unpaired electrons?
Answer» Which of the following molecules/ions does not contain unpaired electrons?

Discussion

35.	Match List I with List II and select the correct answer using the codes given below the lists List I (Compound) List II (Oxidation state of N) (A) NO2 (1) +5 (B) HNO (2) -3 (C) NH3 (3) +4 (D) N2O5 (4) +1
Answer» Match List I with List II and select the correct answer using the codes given below the lists List I (Compound) List II (Oxidation state of N) (A) $N O_{2}$ (1) +5 (B) $H N O$ (2) -3 (C) $N H_{3}$ (3) +4 (D) $N_{2} O_{5}$ (4) +1

35.

Match List I with List II and select the correct answer using the codes given below the lists List I (Compound) List II (Oxidation state of N) (A) NO2 (1) +5 (B) HNO (2) -3 (C) NH3 (3) +4 (D) N2O5 (4) +1

Answer»

Match List I with List II and select the correct answer using the codes given below the lists

List I (Compound) List II (Oxidation state of N)

(A) $N O_{2}$ (1) +5

(B) $H N O$ (2) -3

(C) $N H_{3}$ (3) +4

(D) $N_{2} O_{5}$ (4) +1

Discussion

36.	The pH of 0.1M aqueous solutions of NaCl, CH3COONa and NH4Cl will follow the order
Answer» The pH of 0.1M aqueous solutions of NaCl, $C H_{3}$ COONa and $N H_{4}$ Cl will follow the order

Discussion

37.	Enthalpy of chemisorption is in the order of?
Answer» Enthalpy of chemisorption is in the order of?

Discussion

38.	Write short notes on the following: (i) Carbylamine reaction (ii) Diazotization (iii) Hofmann's bromamide reaction (iv) Coupling reaction (v) Ammonolysis (vi) Acetylation (vii) Gabriel phthalimide synthesis.
Answer» Write short notes on the following: (i) Carbylamine reaction (ii) Diazotization (iii) Hofmann's bromamide reaction (iv) Coupling reaction (v) Ammonolysis (vi) Acetylation (vii) Gabriel phthalimide synthesis.

38.

Write short notes on the following: (i) Carbylamine reaction (ii) Diazotization (iii) Hofmann's bromamide reaction (iv) Coupling reaction (v) Ammonolysis (vi) Acetylation (vii) Gabriel phthalimide synthesis.

Answer»

Write short notes on the following:

(i) Carbylamine reaction

(ii) Diazotization

(iii) Hofmann's bromamide reaction

(iv) Coupling reaction

(v) Ammonolysis

(vi) Acetylation

(vii) Gabriel phthalimide synthesis.

Discussion

39.	How to distinguish between propanol and ethanol chemically?
Answer» How to distinguish between propanol and ethanol chemically?

Discussion

40.	What is splitting of silver?
Answer» What is splitting of silver?

Discussion

41.	The concentration of fluoride, lead, nitrate and iron in water sample from an underground lake was found to be 1000 ppb,40ppb, 100 ppm and 0.2 ppm, respectively. This water is unsuitable for drinking due to high concentration of :
Answer» The concentration of fluoride, lead, nitrate and iron in water sample from an underground lake was found to be 1000 ppb,40ppb, 100 ppm and 0.2 ppm, respectively. This water is unsuitable for drinking due to high concentration of :

Discussion

42.	Which of the following pairs of ions is isoelectronic and isostructural ?
Answer» Which of the following pairs of ions is isoelectronic and isostructural ?

Discussion

43.	Which one of the following statements is incorrect about werner’s theory?
Answer» Which one of the following statements is incorrect about werner’s theory?

Discussion

44.	Redox reactions include
Answer» Redox reactions include

Discussion

45.	Which is used in the manufacture of plastic
Answer» Which is used in the manufacture of plastic

Discussion

46.	Is electron gain enthalpy inversely proportional to the atomic radius?
Answer» Is electron gain enthalpy inversely proportional to the atomic radius?

Discussion

47.	Ioniziation energy of nitrogen is more than oxygen because-
Answer» Ioniziation energy of nitrogen is more than oxygen because-

Discussion

48.	Calculate the mass of a photon of sodium light having wavelength 600 nm and velocity 3×108ms−1.
Answer» Calculate the mass of a photon of sodium light having wavelength 600 nm and velocity $3 \times 10^{8} m s^{- 1}$ .

Discussion

49.	Uncertainity in position is twice the uncertainity in momentum uncertainity in velocity is :
Answer» Uncertainity in position is twice the uncertainity in momentum uncertainity in velocity is :

Discussion

50.	Arrange the following alcohols in the decreasing order of their ease of dehydration with H2SO4.
Answer» Arrange the following alcohols in the decreasing order of their ease of dehydration with H₂SO₄.

50.

Arrange the following alcohols in the decreasing order of their ease of dehydration with H2SO4.

Answer»

Arrange the following alcohols in the decreasing order of their ease of dehydration with H₂SO₄.

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Which one of the following aqueous solutions will exhibit highest boiling point?

In this sequence X, Y and Z are respectively

Pure 'X' is a colourless liquid but on standing changes to brown colour.'X' has no action on litmus but forms salt with HCl and H2SO4. It is steam volatile. Then 'X' would be

Which of the following chemical reaction is associated with the Deacon process?

What type of lattice is found in potassium chloride crystal [MP PMT 1996]

logKPKC+logRT=0 is a relationship for the reaction:

While charging the lead storage battery, ………

1mole of NaCl is doped with 10−5 mole of SrCl2. The number of cationic vacancies in the crystal lattice will be:

Thomson's plum pudding model explained:

In the following reaction : 2NO+O2k′→2NO2 What is the predicted rate law, if the mechanism is given as : NO+O2Keq⇌NO3 (Fast) NO3+NOk1−→NO2+NO2 (Slow)

If the observed dipole moment of HF is 1.944 D and the bond length of HF is 90 pm. Find the % covalent character of HF.

Consider the following structures and calculate value of (P2–Q2) Where P = Total number of correct structure representation Q = Total number of incorrect structure representation

How many litres of water must be added to 1 litre of an aqueous solution of HCl with a pH of 1 to create an aqueous solution with pH of 2?

The alkene formed after the rearrangement of the given compound at low temperatures will be:

Calculate the minimum concentration of CO2−3 required to precipitate NiCO3 in a solution containing 2.0×10−5 M of Ni2+? Given : (Ksp for NiCO3=6.6×10−10)

"x" will be:

(i) Write down the IUPAC name of the following complex: [Co(NH3)5(NO2)](NO3)2 (ii) Write the formula for the following complex: Potassium tetracyanidonickelate(II)

What is the formula to find number of resonating structures in an organic compound?

How to calculate covalent radius?

No of structural isomers of C5H8Br2

Identify the correct structure of 3-methylidenepenta-1,4-diene.

The enthalpies of elements in their standard states are taken as zero. The enthalpy of formation of a compound (a) is always negative (b) is always positive (c) may be positive or negative (d) is never negative

Action of heat on potassium permanganate at 746K results in formation of:

Which of the following is the most abundant mineral in animal body?

The pH at which Ni(OH)2 begins to precipitate from a solution containing 10−3M Ni2+ ions: [Ksp of (Ni(OH)2=10−11]

An ideal gas has molar heat capacity Cv at constant volume. Then molar heat capacity of this gas as a function of its volume V, if it undergoes process T=T0eαV is

The incorrect hydrated radius order is:

The purpose of smelting an ore is to:

12 mole of helium gas is contained in a container at 27∘C. Find the heat energy needed to double the pressure of the gas, keeping its volume constant. Given heat capacity of the gas is 3 J/g-K.

35 mL of 1.5 M Pb(NO3)2 solution is mixed with 15 mL of 0.2 M KI solution. The maximum number of moles of PbI2 that can be precipitated is

How much quantity of electricity has to be passed through 200 ml of 0.5M CuSO4 solution to completely deposit copper?

Which of the following has a bond formed by overlap of sp−sp3 hybrid orbitals

Which of the following molecules/ions does not contain unpaired electrons?

Match List I with List II and select the correct answer using the codes given below the lists List I (Compound) List II (Oxidation state of N) (A) NO2 (1) +5 (B) HNO (2) -3 (C) NH3 (3) +4 (D) N2O5 (4) +1

The pH of 0.1M aqueous solutions of NaCl, CH3COONa and NH4Cl will follow the order

Enthalpy of chemisorption is in the order of?

Write short notes on the following: (i) Carbylamine reaction (ii) Diazotization (iii) Hofmann's bromamide reaction (iv) Coupling reaction (v) Ammonolysis (vi) Acetylation (vii) Gabriel phthalimide synthesis.

How to distinguish between propanol and ethanol chemically?

What is splitting of silver?

The concentration of fluoride, lead, nitrate and iron in water sample from an underground lake was found to be 1000 ppb,40ppb, 100 ppm and 0.2 ppm, respectively. This water is unsuitable for drinking due to high concentration of :

Which of the following pairs of ions is isoelectronic and isostructural ?

Which one of the following statements is incorrect about werner’s theory?

Redox reactions include

Which is used in the manufacture of plastic

Is electron gain enthalpy inversely proportional to the atomic radius?

Ioniziation energy of nitrogen is more than oxygen because-

Calculate the mass of a photon of sodium light having wavelength 600 nm and velocity 3×108ms−1.

Uncertainity in position is twice the uncertainity in momentum uncertainity in velocity is :

Arrange the following alcohols in the decreasing order of their ease of dehydration with H2SO4.