46295 + Interview Questions in Chemistry

1.	70.Explain band gap. And hydration and lattice energy
Answer» 70.Explain band gap. And hydration and lattice energy

Discussion

2.	Molarity of a mixture of acid and base
Answer» Molarity of a mixture of acid and base

Discussion

3.	An alkene on ozonolysis gives methanal as one of the product. Its structure is
Answer» An alkene on ozonolysis gives methanal as one of the product. Its structure is

Discussion

4.	33. Benzene burns according to the following equation at 300 K (R = 8.314 J mole1K) What is the δ Eo for the combustion of 1.5 mol of benzene (1) 3271 kJ (2) 9813 kJ (3) 9807.37 kJ (4) 4912.11 kJ
Answer» 33. Benzene burns according to the following equation at 300 K (R = 8.314 J mole1K) What is the δ Eo for the combustion of 1.5 mol of benzene (1) 3271 kJ (2) 9813 kJ (3) 9807.37 kJ (4) 4912.11 kJ

Discussion

5.	A system does 200 J of work and at the same time absorbs 150 J of heat. The magnitude of the change in internal energy inJ is (Nearest integer)
Answer» A system does $200 J$ of work and at the same time absorbs 150 $J$ of heat. The magnitude of the change in internal energy in $J$ is (Nearest integer)

Discussion

6.	A 5.0 cm3 solution of H2O2 liberates 0.508 g of iodine from acidified KI solution. Calculate the strength of H2O2 solution in terms of volume strength at STP.
Answer» A ${5.0} {cm}^{3}$ solution of $H_{2} O_{2}$ liberates $0.508 g$ of iodine from acidified $K I$ solution. Calculate the strength of $H_{2} O_{2}$ solution in terms of volume strength at STP.

Discussion

7.	33. A solution containing 1 mole per litre of each copper nitrate Silver Nitrate mercuric nitrate and magnesium nitrate is being electrolysed by using inert electrodes the value of standard electrode potential in volts reduction potential are With increasing voltage the sequence of deposition of metals on the cathode will be 1) Ag,Hg,Cu,Mg 2)Mg,Cu,Hg,Ag 3)Ag,Hg,Cu 4)Cu,Hg,Ag
Answer» 33. A solution containing 1 mole per litre of each copper nitrate Silver Nitrate mercuric nitrate and magnesium nitrate is being electrolysed by using inert electrodes the value of standard electrode potential in volts reduction potential are With increasing voltage the sequence of deposition of metals on the cathode will be 1) Ag,Hg,Cu,Mg 2)Mg,Cu,Hg,Ag 3)Ag,Hg,Cu 4)Cu,Hg,Ag

Discussion

8.	The radial probability distribution curve Obtain for an orbital. wave function () has 3 peaks nd 2 radial nodes. The valence e- of which one of the following metal dpes this wave function () correspond to? (1) Co (2) Li (3) K (4) Na
Answer» The radial probability distribution curve Obtain for an orbital. wave function () has 3 peaks nd 2 radial nodes. The valence e- of which one of the following metal dpes this wave function () correspond to? (1) Co (2) Li (3) K (4) Na

Discussion

9.	Which of the following compound has most acidic hydrogen?
Answer» Which of the following compound has most acidic hydrogen?

Discussion

10.	Question 5 (c)Draw the electron dot structure for propanone.
Answer» Question 5 (c) Draw the electron dot structure for propanone.

Discussion

11.	How many elements from the following are not transition element? Zn,Co,Cd,Hg,Au,Cu
Answer» How many elements from the following are not transition element? $Z n, C o, C d, H g, A u, C u$

Discussion

12.	what is the word root for 13 carbon atoms ?
Answer» what is the word root for 13 carbon atoms ?

Discussion

13.	The number of functional isomers of 2-phenyl ethanol is?
Answer» The number of functional isomers of 2-phenyl ethanol is?

Discussion

14.	Which is the most reactive alkali metal in the water
Answer» Which is the most reactive alkali metal in the water

Discussion

15.	Which of the following exhibits only +3 oxidation state ? [AIPMT (Mains)-2012] (1) Th (2) Pa (3) U (4) Ac
Answer» Which of the following exhibits only +3 oxidation state ? [AIPMT (Mains)-2012] (1) Th (2) Pa (3) U (4) Ac

Discussion

16.	What do you understand by the term ’auto-protolysis’ of water? What is its significance?
Answer» What do you understand by the term ’auto-protolysis’ of water? What is its significance?

Discussion

17.	The increasing order of reactivity of the substrates for SN1 reaction is
Answer» The increasing order of reactivity of the substrates for $S_{N} 1$ reaction is

Discussion

18.	Atomic number of Mn, Fe, Co and Ni are 25, 26, 27 and 28 respectively. Which of the following outer orbital octahedral complexes have same number of unpaired electrons? (a) [MnCl6]3− (b) [FeF6]3− (c) [CoF6]−3− (d) [Ni(NH3)6]2+
Answer» Atomic number of Mn, Fe, Co and Ni are 25, 26, 27 and 28 respectively. Which of the following outer orbital octahedral complexes have same number of unpaired electrons? (a) $[M n C l_{6}]^{3 -}$ (b) $[F e F_{6}]^{3 -}$ (c) $[C o F_{6}]^{- 3 -}$ (d) $[N i (N H_{3})_{6}]^{2 +}$

Discussion

19.	Metals are generally electropositive then why do they accept a pair of electron donated by the lignads in complexes?Positive ligands being deficit of electrons donate a pair of electrons to metal ion during complex formation why?
Answer» Metals are generally electropositive then why do they accept a pair of electron donated by the lignads in complexes?Positive ligands being deficit of electrons donate a pair of electrons to metal ion during complex formation why?

Discussion

20.	61. a 10 g mixture of glucose and urea present in 250 ml solutions shows the osmotic pressure of 7.4atm at 27'C. calculate % composition of mixture
Answer» 61. a 10 g mixture of glucose and urea present in 250 ml solutions shows the osmotic pressure of 7.4atm at 27'C. calculate % composition of mixture

Discussion

21.	16. 'X' AND 'Y' ARE OXYANION OF Cr . 'X' IN PRESENCE OF H+ GIVES 'Y' 'Y' IN PRESENCE OF OH- GIVES 'X' 'Y' IN PRESENCE OF SO2 GIVES 'Z' & SO4(-2) FIND OXIDATION STATE OF Cr IN 'X','Y','Z'. RESPECTIVELY 1. +3,+6,+6 2.+6,+3,+6 3.+6,+6,+6 4.+6,+6,+3
Answer» 16. 'X' AND 'Y' ARE OXYANION OF Cr . 'X' IN PRESENCE OF H+ GIVES 'Y' 'Y' IN PRESENCE OF OH- GIVES 'X' 'Y' IN PRESENCE OF SO2 GIVES 'Z' & SO4(-2) FIND OXIDATION STATE OF Cr IN 'X','Y','Z'. RESPECTIVELY 1. +3,+6,+6 2.+6,+3,+6 3.+6,+6,+6 4.+6,+6,+3

Discussion

22.	The number of oxygen atoms present in maltose is
Answer» The number of oxygen atoms present in maltose is

Discussion

23.	Correct order of bond length is:
Answer» Correct order of bond length is:

Discussion

24.	If number of Bonding electrons = 10 and number of anti-bonding electrons = 8, what will be the bond order for the corresponding molecule?
Answer» If number of Bonding electrons = 10 and number of anti-bonding electrons = 8, what will be the bond order for the corresponding molecule?

Discussion

25.	The velocity of electron in third excited state ofBe3+ ion will be :-31.3(1)(2.188 107ms-1(2)(2.188 1()-ms-44(3) (2.188x 109 Kms-1(4) (2.188x i07 Kms"
Answer» The velocity of electron in third excited state ofBe3+ ion will be :-31.3(1)(2.188 107ms-1(2)(2.188 1()-ms-44(3) (2.188x 109 Kms-1(4) (2.188x i07 Kms"

Discussion

26.	At a certaintemperature and total pressure of 105 Pa, iodine vapourcontains 40% by volume of I atomsCalculate Kpfor the equilibrium.
Answer» At a certain temperature and total pressure of 10⁵Pa, iodine vapour contains 40% by volume of I atoms Calculate K_pfor the equilibrium.

26.

At a certaintemperature and total pressure of 105 Pa, iodine vapourcontains 40% by volume of I atomsCalculate Kpfor the equilibrium.

Answer»

At a certain
temperature and total pressure of 10⁵Pa, iodine vapour
contains 40% by volume of I atoms

Calculate K_pfor the equilibrium.

Discussion

27.	The correct structure of the product A formed in the reaction
Answer» The correct structure of the product A formed in the reaction

Discussion

28.	What is the final major product in the following reaction ?
Answer» What is the final major product in the following reaction ?

Discussion

29.	13.Dimension formula in any other fundamental quantity
Answer» 13.Dimension formula in any other fundamental quantity

Discussion

30.	Transition metals are characterized by the properties
Answer» Transition metals are characterized by the properties

Discussion

31.	Question 3Why does carbon exist mostly in a combined state?
Answer» Question 3 Why does carbon exist mostly in a combined state?

31.

Question 3Why does carbon exist mostly in a combined state?

Answer»

Question 3

Why does carbon exist mostly in a combined state?

Discussion

32.	If radiation corresponding to second line of "Balmer series" of Li2+ ion, knocked out electron from first excited state of H− atom then kinetic energy of ejected electron would be:
Answer» If radiation corresponding to second line of "Balmer series" of $L i^{2 +}$ ion, knocked out electron from first excited state of $H -$ atom then kinetic energy of ejected electron would be:

Discussion

33.	a glass capillary sealed at the upper end is of length 0.20m and internal radius 110^-5m.the tube is immersed vertically into a liquid of surface tension 7.510^-2N/m.to what length the capillary has to immerse so that liquid level inside and outside the capillary becomes same.angle of contact is zero.
Answer» a glass capillary sealed at the upper end is of length 0.20m and internal radius 110^-5m.the tube is immersed vertically into a liquid of surface tension 7.510^-2N/m.to what length the capillary has to immerse so that liquid level inside and outside the capillary becomes same.angle of contact is zero.

Discussion

34.	Catalytic poison in Rosenmund reduction is:
Answer» Catalytic poison in Rosenmund reduction is:

Discussion

35.	A metal rod A is dipped in 0.1 M solution of A S04. The salt is 95% dissociated at this dilution at 298K. The reduction electrode potential is(given E_{A^{2+}/A }=0.76V)
Answer» A metal rod A is dipped in 0.1 M solution of A S04. The salt is 95% dissociated at this dilution at 298K. The reduction electrode potential is(given E_{A^{2+}/A }=0.76V)

Discussion

36.	What are radicals?
Answer» What are radicals?

Discussion

37.	In the compound,6CH2=5CH−4CH2−3CH2−2CH≡1CH2, C2−C3 bond is of :
Answer» In the compound, $6 C H_{2} = 5 C H - 4 C H_{2} - 3 C H_{2} - 2 C H \equiv 1 C H_{2}$ , $C_{2} - C_{3}$ bond is of :

Discussion

38.	Carbon is in the lowest oxidation state in
Answer» Carbon is in the lowest oxidation state in

Discussion

39.	The correct order regarding second ionisation potentiall is 1. N>C>B.>Be 2.N>C>Be>B 3.N>B>C>Be 4.Be>N>C>B
Answer» The correct order regarding second ionisation potentiall is 1. N>C>B.>Be 2.N>C>Be>B 3.N>B>C>Be 4.Be>N>C>B

Discussion

40.	what is meant by angular momentum of s electron is zero
Answer» what is meant by angular momentum of s electron is zero

Discussion

41.	If 4g of NaOH dissolves in 36 g of H2O, calculate the mole fraction of each component in the solution. Also, determine the molarity of solution (specific gravity of solution is 1 g mL−1).
Answer» If 4g of NaOH dissolves in 36 g of $H_{2} O$ , calculate the mole fraction of each component in the solution. Also, determine the molarity of solution (specific gravity of solution is 1 g $m L^{- 1})$ .

Discussion

42.	FeSO4 solution mixed with (NH4)2SO4solution in 1:1 molar ratio gives the test of Fe2+ ion butCuSO4 solution mixed with aqueous ammonia in 1:4 molarratio does not give the test of Cu2+ ion. Explain why?
Answer» FeSO₄ solution mixed with (NH₄)₂SO₄ solution in 1:1 molar ratio gives the test of Fe²⁺ion but CuSO₄solution mixed with aqueous ammonia in 1:4 molar ratio does not give the test of Cu²⁺ ion. Explain why?

Discussion

43.	Showhow each of the following compounds can be converted to benzoic acid.(i) Ethylbenzene (ii) Acetophenone(iii) Bromobenzene (iv) Phenylethene(Styrene)
Answer» Show how each of the following compounds can be converted to benzoic acid. (i) Ethylbenzene (ii) Acetophenone (iii) Bromobenzene (iv) Phenylethene (Styrene)

43.

Showhow each of the following compounds can be converted to benzoic acid.(i) Ethylbenzene (ii) Acetophenone(iii) Bromobenzene (iv) Phenylethene(Styrene)

Answer»

Show
how each of the following compounds can be converted to benzoic acid.

(i) Ethylbenzene
(ii) Acetophenone

(iii) Bromobenzene
(iv) Phenylethene
(Styrene)

Discussion

44.	A truck of mass mnot is pulled with force F. If sand is poured at constant rate μkg /s through constant hopper.Find the speed of truck as function of time
Answer» A truck of mass mnot is pulled with force F. If sand is poured at constant rate μkg /s through constant hopper.Find the speed of truck as function of time

Discussion

45.	during the electrolysis of water why is the volume of hydrogen collected is twice the volume of oxygen collected??
Answer» during the electrolysis of water why is the volume of hydrogen collected is twice the volume of oxygen collected??

Discussion

46.	7. The ph of a solution obtained by mixing 100ml of 0.2 M Ch3COOH with 100ml of 0.2 M NaOH will be ?
Answer» 7. The ph of a solution obtained by mixing 100ml of 0.2 M Ch3COOH with 100ml of 0.2 M NaOH will be ?

Discussion

47.	The molecule that has polar covalent, non polar covalent, coordinate and ionic bond among the following
Answer» The molecule that has polar covalent, non polar covalent, coordinate and ionic bond among the following

Discussion

48.	Calculate the angular orbital momentum of the orbiting electron in the fifth orbit of an atom.
Answer» Calculate the angular orbital momentum of the orbiting electron in the fifth orbit of an atom.

Discussion

49.	Which of the following is/are correct about Freundlich's adsorption isotherm for gases and solutions?
Answer» Which of the following is/are correct about Freundlich's adsorption isotherm for gases and solutions?

Discussion

50.	Whatis the role of graphite rod in the electrometallurgy of aluminium?
Answer» What is the role of graphite rod in the electrometallurgy of aluminium?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

70.Explain band gap. And hydration and lattice energy

Molarity of a mixture of acid and base

An alkene on ozonolysis gives methanal as one of the product. Its structure is

33. Benzene burns according to the following equation at 300 K (R = 8.314 J mole1K) What is the δ Eo for the combustion of 1.5 mol of benzene (1) 3271 kJ (2) 9813 kJ (3) 9807.37 kJ (4) 4912.11 kJ

A system does 200 J of work and at the same time absorbs 150 J of heat. The magnitude of the change in internal energy inJ is (Nearest integer)

A 5.0 cm3 solution of H2O2 liberates 0.508 g of iodine from acidified KI solution. Calculate the strength of H2O2 solution in terms of volume strength at STP.

The radial probability distribution curve Obtain for an orbital. wave function () has 3 peaks nd 2 radial nodes. The valence e- of which one of the following metal dpes this wave function () correspond to? (1) Co (2) Li (3) K (4) Na

Which of the following compound has most acidic hydrogen?

Question 5 (c)Draw the electron dot structure for propanone.

How many elements from the following are not transition element? Zn,Co,Cd,Hg,Au,Cu

what is the word root for 13 carbon atoms ?

The number of functional isomers of 2-phenyl ethanol is?

Which is the most reactive alkali metal in the water

Which of the following exhibits only +3 oxidation state ? [AIPMT (Mains)-2012] (1) Th (2) Pa (3) U (4) Ac

What do you understand by the term ’auto-protolysis’ of water? What is its significance?

The increasing order of reactivity of the substrates for SN1 reaction is

Atomic number of Mn, Fe, Co and Ni are 25, 26, 27 and 28 respectively. Which of the following outer orbital octahedral complexes have same number of unpaired electrons? (a) [MnCl6]3− (b) [FeF6]3− (c) [CoF6]−3− (d) [Ni(NH3)6]2+

Metals are generally electropositive then why do they accept a pair of electron donated by the lignads in complexes?Positive ligands being deficit of electrons donate a pair of electrons to metal ion during complex formation why?

61. a 10 g mixture of glucose and urea present in 250 ml solutions shows the osmotic pressure of 7.4atm at 27'C. calculate % composition of mixture

16. 'X' AND 'Y' ARE OXYANION OF Cr . 'X' IN PRESENCE OF H+ GIVES 'Y' 'Y' IN PRESENCE OF OH- GIVES 'X' 'Y' IN PRESENCE OF SO2 GIVES 'Z' & SO4(-2) FIND OXIDATION STATE OF Cr IN 'X','Y','Z'. RESPECTIVELY 1. +3,+6,+6 2.+6,+3,+6 3.+6,+6,+6 4.+6,+6,+3

The number of oxygen atoms present in maltose is

Correct order of bond length is:

If number of Bonding electrons = 10 and number of anti-bonding electrons = 8, what will be the bond order for the corresponding molecule?

The velocity of electron in third excited state ofBe3+ ion will be :-31.3(1)(2.188 107ms-1(2)(2.188 1()-ms-44(3) (2.188x 109 Kms-1(4) (2.188x i07 Kms"

At a certaintemperature and total pressure of 105 Pa, iodine vapourcontains 40% by volume of I atomsCalculate Kpfor the equilibrium.

The correct structure of the product A formed in the reaction

What is the final major product in the following reaction ?

13.Dimension formula in any other fundamental quantity

Transition metals are characterized by the properties

Question 3Why does carbon exist mostly in a combined state?

If radiation corresponding to second line of "Balmer series" of Li2+ ion, knocked out electron from first excited state of H− atom then kinetic energy of ejected electron would be:

Catalytic poison in Rosenmund reduction is:

A metal rod A is dipped in 0.1 M solution of A S04. The salt is 95% dissociated at this dilution at 298K. The reduction electrode potential is(given E_{A^{2+}/A }=0.76V)

What are radicals?

In the compound,6CH2=5CH−4CH2−3CH2−2CH≡1CH2, C2−C3 bond is of :

Carbon is in the lowest oxidation state in

The correct order regarding second ionisation potentiall is 1. N>C>B.>Be 2.N>C>Be>B 3.N>B>C>Be 4.Be>N>C>B

what is meant by angular momentum of s electron is zero

If 4g of NaOH dissolves in 36 g of H2O, calculate the mole fraction of each component in the solution. Also, determine the molarity of solution (specific gravity of solution is 1 g mL−1).

FeSO4 solution mixed with (NH4)2SO4solution in 1:1 molar ratio gives the test of Fe2+ ion butCuSO4 solution mixed with aqueous ammonia in 1:4 molarratio does not give the test of Cu2+ ion. Explain why?

Showhow each of the following compounds can be converted to benzoic acid.(i) Ethylbenzene (ii) Acetophenone(iii) Bromobenzene (iv) Phenylethene(Styrene)

A truck of mass mnot is pulled with force F. If sand is poured at constant rate μkg /s through constant hopper.Find the speed of truck as function of time

during the electrolysis of water why is the volume of hydrogen collected is twice the volume of oxygen collected??

7. The ph of a solution obtained by mixing 100ml of 0.2 M Ch3COOH with 100ml of 0.2 M NaOH will be ?

The molecule that has polar covalent, non polar covalent, coordinate and ionic bond among the following

Calculate the angular orbital momentum of the orbiting electron in the fifth orbit of an atom.

Which of the following is/are correct about Freundlich's adsorption isotherm for gases and solutions?

Whatis the role of graphite rod in the electrometallurgy of aluminium?