46295 + Interview Questions in Chemistry

1.	27.The specific conductance of 0.5 N solution of 0.01287 ohm-1 cm -1 . What would be the equivalent conductance
Answer» 27.The specific conductance of 0.5 N solution of 0.01287 ohm-1 cm -1 . What would be the equivalent conductance

Discussion

2.	Draw all the possible isomers of C3H6O and also give their IUPAC name.
Answer» Draw all the possible isomers of C3H6O and also give their IUPAC name.

Discussion

3.	How to calculate effective nuclear charge and shielding constant for d and f block elements Please explain with example
Answer» How to calculate effective nuclear charge and shielding constant for d and f block elements Please explain with example

3.

How to calculate effective nuclear charge and shielding constant for d and f block elements Please explain with example

Answer»

How to calculate effective nuclear charge and shielding constant for d and f block elements

Please explain with example

Discussion

4.	The major product of the reaction of 2-butene with alkaline KMnO4 solution is
Answer» The major product of the reaction of 2-butene with alkaline KMnO $_{4}$ solution is

Discussion

5.	What are ideal gases and real gases
Answer» What are ideal gases and real gases

Discussion

6.	Which of the following is Friedel-Crafts reaction?
Answer» Which of the following is Friedel-Crafts reaction?

Discussion

7.	Difference between Hoopes and serpecks processes.
Answer» Difference between Hoopes and serpecks processes.

Discussion

8.	If N is the number of tetrehedral voids in a close-packed structure, then the number of octahedral voids is:
Answer» If N is the number of tetrehedral voids in a close-packed structure, then the number of octahedral voids is:

Discussion

9.	What will be orbit angular momentum for a p- electron ?
Answer» What will be orbit angular momentum for a p- electron ?

Discussion

10.	Which of the following species can form hydrogen bond with watera) CH4b) HCOOHc) Na+d) C6H6
Answer» Which of the following species can form hydrogen bond with water a) CH₄ b) HCOOH c) Na⁺ d) C₆H₆

Discussion

11.	How van be a electro gain process endothermic ?
Answer» How van be a electro gain process endothermic ?

Discussion

12.	Rmgx+ ch3-o-ch3 + dry ether
Answer» Rmgx+ ch3-o-ch3 + dry ether

Discussion

13.	In hydrogen atom energy of electron in 2nd Bohr's orbit is -3.4eV. The kinetic energy of electron in this orbit is1)-3.4eV2)+3.4eV3)-6.8eV4)+1.7eV
Answer» In hydrogen atom energy of electron in 2nd Bohr's orbit is -3.4eV. The kinetic energy of electron in this orbit is 1)-3.4eV 2)+3.4eV 3)-6.8eV 4)+1.7eV

Discussion

14.	The popular gemstone emerald contains ions of:
Answer» The popular gemstone emerald contains ions of:

Discussion

15.	If energy in the 1st excited state in H atom is 23.8 ev , then the potential energy of H atom in ground state can be assumed to be
Answer» If energy in the 1st excited state in H atom is 23.8 ev , then the potential energy of H atom in ground state can be assumed to be

Discussion

16.	Explainthe following with suitable examples:(i) Ferromagnetism(ii)Paramagnetism(iii)Ferrimagnetism(iv)Antiferromagnetism(v)12-16and 13-15 group compounds.
Answer» Explain the following with suitable examples: (i) Ferromagnetism (ii)Paramagnetism (iii)Ferrimagnetism (iv)Antiferromagnetism (v)12-16 and 13-15 group compounds.

16.

Explainthe following with suitable examples:(i) Ferromagnetism(ii)Paramagnetism(iii)Ferrimagnetism(iv)Antiferromagnetism(v)12-16and 13-15 group compounds.

Answer»

Explain
the following with suitable examples:

(i) Ferromagnetism

(ii)Paramagnetism

(iii)Ferrimagnetism

(iv)Antiferromagnetism

(v)12-16
and 13-15 group compounds.

Discussion

17.	Sodium Dodecyl Sulphate (SDS) is used while separating proteins by polyacrylamide.Gel electrophoresis because
Answer» Sodium Dodecyl Sulphate (SDS) is used while separating proteins by polyacrylamide.Gel electrophoresis because

Discussion

18.	what is meant by viscosity(h)??
Answer» what is meant by viscosity(h)??

Discussion

19.	what is iupac nomenclature
Answer» what is iupac nomenclature

Discussion

20.	What are the similarities and difference between -(a) Natural detergents and man-made detergents(b) Soap and synthetic detergent (c) Bath soap and soap for washing clothes (d) Modern cement and ancient cement
Answer» What are the similarities and difference between - (a) Natural detergents and man-made detergents (b) Soap and synthetic detergent (c) Bath soap and soap for washing clothes (d) Modern cement and ancient cement

Discussion

21.	The CsCl type structure is exhibited by alkali halides only when the radius of the cation is large enough to keep touching its eight nearest neighbour anions. Below what minimum ratio of cation to anion radii (r+r−) this contact is prevented ?
Answer» The CsCl type structure is exhibited by alkali halides only when the radius of the cation is large enough to keep touching its eight nearest neighbour anions. Below what minimum ratio of cation to anion radii $(\frac{r_{+}}{r_{-}})$ this contact is prevented ?

Discussion

22.	which of the following attraction is strongest ? 1.Cl- and HCl 2.CHCl3 and CHCl3 3.CCl4 and H2 O 3.Cl- and H2O
Answer» which of the following attraction is strongest ? 1.Cl- and HCl 2.CHCl3 and CHCl3 3.CCl4 and H2 O 3.Cl- and H2O

Discussion

23.	What is order of magnitude?
Answer» What is order of magnitude?

Discussion

24.	The correct increasing order of stability of the free radicals among the following is:
Answer» The correct increasing order of stability of the free radicals among the following is:

Discussion

25.	8. Which of the following is a polar molecule? (1) Para dichlorobenzene (2) Carbon tetrachloride (3) Tetrachloroethene (4) HO OH
Answer» 8. Which of the following is a polar molecule? (1) Para dichlorobenzene (2) Carbon tetrachloride (3) Tetrachloroethene (4) HO OH

Discussion

26.	the volume strength of 10% (w/v) h2o2 solution i
Answer» the volume strength of 10% (w/v) h2o2 solution i

Discussion

27.	The approximate radius of a H-atom is 0.05 nm, and that of proton is 1.5 x 10-15 m. Assuming both thehydrogen atom and the proton to be spherical, calculate fraction of the space in an atom of hydrogen thatis occupied by the nucleus.
Answer» The approximate radius of a H-atom is 0.05 nm, and that of proton is 1.5 x 10-15 m. Assuming both thehydrogen atom and the proton to be spherical, calculate fraction of the space in an atom of hydrogen thatis occupied by the nucleus.

Discussion

28.	The reaction of the white phophorous on boiling with alkali in an inert atmosphere resulted in the formation of product 'A'. The reaction of 1 mole of 'A' with an excess of AgNO3 in an aqueous medium gives ____ mol(s) of Ag. (Round off to the Nearest integer).
Answer» The reaction of the white phophorous on boiling with alkali in an inert atmosphere resulted in the formation of product 'A'. The reaction of 1 mole of 'A' with an excess of $A g N O_{3}$ in an aqueous medium gives ____ mol(s) of Ag. (Round off to the Nearest integer).

Discussion

29.	The periodic table consists of 18 groups, An isotope of copper, on bombardment with protons, undergoes a nuclear reaction yielding element X as shown below. To which group, element X belongs in the periodic table ?6329Cu+11H→610n+α+211H+X
Answer» The periodic table consists of $18$ groups, An isotope of copper, on bombardment with protons, undergoes a nuclear reaction yielding element $X$ as shown below. To which group, element $X$ belongs in the periodic table ? $_{29}^{63} Cu +_{1}^{1} H \to 6_{0}^{1} n + α + 2_{1}^{1} H + X$

Discussion

30.	47.Delocalised molecular orbital are found in A)H_2 B)HS^- C)CH_4 D)CO_3^{2-
Answer» 47.Delocalised molecular orbital are found in A)H_2 B)HS^- C)CH_4 D)CO_3^{2-

Discussion

31.	How many lone pairs and bond pairs are present in H2SO4?
Answer» How many lone pairs and bond pairs are present in H2SO4?

Discussion

32.	what is sigma and pay bond?
Answer» what is sigma and pay bond?

Discussion

33.	The standard electrode potentials of Zn2+Zn and Ag+Ag are −0.763 V and +0.799 V respectively. The standard potential of the cell is
Answer» The standard electrode potentials of $\frac{Z n^{2 +}}{Z n}$ and $\frac{A g^{+}}{A g}$ are $- 0.763 V$ and $+ 0.799 V$ respectively. The standard potential of the cell is

Discussion

34.	17.De broglie wavelength associated with an electron in the 3rd orbit of He+ ion is Options:A)10angstrong B)2 angstrong. C)5 angstrong D)1 angstrong
Answer» 17.De broglie wavelength associated with an electron in the 3rd orbit of He+ ion is Options:A)10angstrong B)2 angstrong. C)5 angstrong D)1 angstrong

Discussion

35.	The basic structural unit of zeolite is:
Answer» The basic structural unit of zeolite is:

Discussion

36.	When H2N−CH2−CH2−NH2 reacts with diethyl oxalate. What will be the product?
Answer» When $H_{2} N - C H_{2} - C H_{2} - N H_{2}$ reacts with diethyl oxalate. What will be the product?

Discussion

37.	81 Why is vinyl free radical more stable Than methyl and phenyl free radical?
Answer» 81 Why is vinyl free radical more stable Than methyl and phenyl free radical?

Discussion

38.	propyne is produced in the hydrolysis of carbides containing 1)C^{4-} ion 2)C_2^{2-} ion 3)C_3^{4-} ion 4)C_3^{2-} ion
Answer» propyne is produced in the hydrolysis of carbides containing 1)C^{4-} ion 2)C_2^{2-} ion 3)C_3^{4-} ion 4)C_3^{2-} ion

Discussion

39.	What are the five uses of Plaster of Paris? [5 MARKS]
Answer» What are the five uses of Plaster of Paris? [5 MARKS]

Discussion

40.	Use the following data to calculate the lattice energy of caesium oxide.Enthalpy of formation of caesium oxide =−233 kJ/molEnthalpy of sublimation of Cs=+78 kJ/molFirst ionization energy of Cs=+375 kJ/molEnthalpy of dissociation of O2 (g)=494 kJ/molFirst electron affinity of O=−141 kJ/molSecond electron affinity of O=+845 kJ/mol
Answer» Use the following data to calculate the lattice energy of caesium oxide. Enthalpy of formation of caesium oxide $= - 233 kJ/mol$ Enthalpy of sublimation of $C s = + 78 kJ/mol$ First ionization energy of $C s = + 375 kJ/mol$ Enthalpy of dissociation of $O_{2} (g) = 494 kJ/mol$ First electron affinity of $O = - 141 kJ/mol$ Second electron affinity of $O = + 845 kJ/mol$

Discussion

41.	Question 6How is the concentration of hydroxide ions (OH−) affected when excess base is dissolved in a solution of sodium hydroxide?
Answer» Question 6 How is the concentration of hydroxide ions $({OH}^{-})$ affected when excess base is dissolved in a solution of sodium hydroxide?

Discussion

42.	Which one has stronger d-pi p-pi bonding?1) PO3−4 2) SO2−4 3) SiO4−4 4) ClO−4
Answer» Which one has stronger d-pi p-pi bonding? 1) $P O_{4}^{3 -}$ 2) $S O_{4}^{2 -}$ 3) $S i O_{4}^{4 -}$ 4) $C l O_{4}^{-}$

42.

Which one has stronger d-pi p-pi bonding?1) PO3−4 2) SO2−4 3) SiO4−4 4) ClO−4

Answer»

Which one has stronger d-pi p-pi bonding?

1) $P O_{4}^{3 -}$

2) $S O_{4}^{2 -}$

3) $S i O_{4}^{4 -}$

4) $C l O_{4}^{-}$

Discussion

43.	The kinetic energy of 5.6 litres of oxygen at STP in cals is
Answer» The kinetic energy of 5.6 litres of oxygen at STP in cals is

Discussion

44.	Complete combustion of 750 g of an organic compound provides 420 g of CO2 and 210 g of H2O.The percentage composition of carbon and hydrogen in organic compound is 15.3 and respectively.(Rounded off to the nearest integer)
Answer» Complete combustion of 750 g of an organic compound provides 420 g of $C O_{2}$ and 210 g of $H_{2} O$ .The percentage composition of carbon and hydrogen in organic compound is 15.3 and respectively. (Rounded off to the nearest integer)

Discussion

45.	Incorrect statement about ionic bond isOptions:It involves electrostatic attractionWrong It is a redox processIts formation is exothermicShould have chosen It leads to least stability to atoms in most of the case
Answer» Incorrect statement about ionic bond is Options: It involves electrostatic attraction Wrong It is a redox process Its formation is exothermic Should have chosen It leads to least stability to atoms in most of the case

Discussion

46.	we know that law of conservation of mass holds to be true and all mass remains conserved but why rest mass and mass in motion is different ? Is it disobeying the law of conservation of mass?
Answer» we know that law of conservation of mass holds to be true and all mass remains conserved but why rest mass and mass in motion is different ? Is it disobeying the law of conservation of mass?

Discussion

47.	Do acidic oxides react only with acids
Answer» Do acidic oxides react only with acids

Discussion

48.	The volume of 2.8g of Carbon dioxide at 27 degree Celsius at 0.821 atm pressure is?( R= 0.0821 l atm mol - 1 K - 1 )
Answer» The volume of 2.8g of Carbon dioxide at 27 degree Celsius at 0.821 atm pressure is? ( R= 0.0821 l atm mol - 1 K - 1 )

Discussion

49.	Identify the major and minor products in the following reactions9-->(i)CH,-CH-CH-CH(CH,), + HBr09What is the major product formed in the following reaction?CH-O-CH-CH-CH3 +HBr-
Answer» Identify the major and minor products in the following reactions9-->(i)CH,-CH-CH-CH(CH,), + HBr09What is the major product formed in the following reaction?CH-O-CH-CH-CH3 +HBr-

Discussion

50.	Find the de-Broglie wavelength of an electron with kinetic energy of 120 eV
Answer» Find the de-Broglie wavelength of an electron with kinetic energy of 120 eV

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

27.The specific conductance of 0.5 N solution of 0.01287 ohm*-1 cm *-1 . What would be the equivalent conductance

Draw all the possible isomers of C3H6O and also give their IUPAC name.

How to calculate effective nuclear charge and shielding constant for d and f block elements Please explain with example

The major product of the reaction of 2-butene with alkaline KMnO4 solution is

What are ideal gases and real gases

Which of the following is Friedel-Crafts reaction?

Difference between Hoopes and serpecks processes.

If N is the number of tetrehedral voids in a close-packed structure, then the number of octahedral voids is:

What will be orbit angular momentum for a p- electron ?

Which of the following species can form hydrogen bond with watera) CH4b) HCOOHc) Na+d) C6H6

How van be a electro gain process endothermic ?

Rmgx+ ch3-o-ch3 + dry ether

In hydrogen atom energy of electron in 2nd Bohr's orbit is -3.4eV. The kinetic energy of electron in this orbit is1)-3.4eV2)+3.4eV3)-6.8eV4)+1.7eV

The popular gemstone emerald contains ions of:

If energy in the 1st excited state in H atom is 23.8 ev , then the potential energy of H atom in ground state can be assumed to be

Explainthe following with suitable examples:(i) Ferromagnetism(ii)Paramagnetism(iii)Ferrimagnetism(iv)Antiferromagnetism(v)12-16and 13-15 group compounds.

Sodium Dodecyl Sulphate (SDS) is used while separating proteins by polyacrylamide.Gel electrophoresis because

what is meant by viscosity(h)??

what is iupac nomenclature

What are the similarities and difference between -(a) Natural detergents and man-made detergents(b) Soap and synthetic detergent (c) Bath soap and soap for washing clothes (d) Modern cement and ancient cement

The CsCl type structure is exhibited by alkali halides only when the radius of the cation is large enough to keep touching its eight nearest neighbour anions. Below what minimum ratio of cation to anion radii (r+r−) this contact is prevented ?

which of the following attraction is strongest ? 1.Cl- and HCl 2.CHCl3 and CHCl3 3.CCl4 and H2 O 3.Cl- and H2O

What is order of magnitude?

The correct increasing order of stability of the free radicals among the following is:

8. Which of the following is a polar molecule? (1) Para dichlorobenzene (2) Carbon tetrachloride (3) Tetrachloroethene (4) HO OH

the volume strength of 10% (w/v) h2o2 solution i

The approximate radius of a H-atom is 0.05 nm, and that of proton is 1.5 x 10-15 m. Assuming both thehydrogen atom and the proton to be spherical, calculate fraction of the space in an atom of hydrogen thatis occupied by the nucleus.

The reaction of the white phophorous on boiling with alkali in an inert atmosphere resulted in the formation of product 'A'. The reaction of 1 mole of 'A' with an excess of AgNO3 in an aqueous medium gives ____ mol(s) of Ag. (Round off to the Nearest integer).

The periodic table consists of 18 groups, An isotope of copper, on bombardment with protons, undergoes a nuclear reaction yielding element X as shown below. To which group, element X belongs in the periodic table ?6329Cu+11H→610n+α+211H+X

47.Delocalised molecular orbital are found in A)H_2 B)HS^- C)CH_4 D)CO_3^{2-

How many lone pairs and bond pairs are present in H2SO4?

what is sigma and pay bond?

The standard electrode potentials of Zn2+Zn and Ag+Ag are −0.763 V and +0.799 V respectively. The standard potential of the cell is

17.De broglie wavelength associated with an electron in the 3rd orbit of He+ ion is Options:A)10angstrong B)2 angstrong. C)5 angstrong D)1 angstrong

The basic structural unit of zeolite is:

When H2N−CH2−CH2−NH2 reacts with diethyl oxalate. What will be the product?

81 Why is vinyl free radical more stable Than methyl and phenyl free radical?

propyne is produced in the hydrolysis of carbides containing 1)C^{4-} ion 2)C_2^{2-} ion 3)C_3^{4-} ion 4)C_3^{2-} ion

What are the five uses of Plaster of Paris? [5 MARKS]

Question 6How is the concentration of hydroxide ions (OH−) affected when excess base is dissolved in a solution of sodium hydroxide?

Which one has stronger d-pi p-pi bonding?1) PO3−4 2) SO2−4 3) SiO4−4 4) ClO−4

The kinetic energy of 5.6 litres of oxygen at STP in cals is

Complete combustion of 750 g of an organic compound provides 420 g of CO2 and 210 g of H2O.The percentage composition of carbon and hydrogen in organic compound is 15.3 and respectively.(Rounded off to the nearest integer)

Incorrect statement about ionic bond isOptions:It involves electrostatic attractionWrong It is a redox processIts formation is exothermicShould have chosen It leads to least stability to atoms in most of the case

we know that law of conservation of mass holds to be true and all mass remains conserved but why rest mass and mass in motion is different ? Is it disobeying the law of conservation of mass?

Do acidic oxides react only with acids

The volume of 2.8g of Carbon dioxide at 27 degree Celsius at 0.821 atm pressure is?( R= 0.0821 l atm mol - 1 K - 1 )

Identify the major and minor products in the following reactions9-->(i)CH,-CH-CH-CH(CH,), + HBr09What is the major product formed in the following reaction?CH-O-CH-CH-CH3 +HBr-

Find the de-Broglie wavelength of an electron with kinetic energy of 120 eV

27.The specific conductance of 0.5 N solution of 0.01287 ohm-1 cm -1 . What would be the equivalent conductance