46295 + Interview Questions in Chemistry

1.	What is the potential energy of the electron in the L-shell of the hydrogen atom?
Answer» What is the potential energy of the electron in the L-shell of the hydrogen atom?

Discussion

2.	In the following compound, according to the rules of IUPAC nomenclature, the groups designated as A, B, C will be numbered as:
Answer» In the following compound, according to the rules of IUPAC nomenclature, the groups designated as A, B, C will be numbered as:

2.

In the following compound, according to the rules of IUPAC nomenclature, the groups designated as A, B, C will be numbered as:

Answer»

In the following compound, according to the rules of IUPAC nomenclature, the groups designated as A, B, C will be numbered as:

Discussion

3.	What is the n-factor of H3PO3 ?
Answer» What is the n-factor of $H_{3} P O_{3}$ ?

Discussion

4.	If an atom has sub-atomic particles then why is atom said to be indivisible?
Answer» If an atom has sub-atomic particles then why is atom said to be indivisible?

Discussion

5.	O2 is bubbled through water at 293K. How many moles of O2 will dissolve in 1L of water, if partial pressure of 02 is 2 kilobar and Kh is 34.86 kilobar?
Answer» O2 is bubbled through water at 293K. How many moles of O2 will dissolve in 1L of water, if partial pressure of 02 is 2 kilobar and Kh is 34.86 kilobar?

Discussion

6.	What is berzelius hypothesis? Is it true?
Answer» What is berzelius hypothesis? Is it true?

Discussion

7.	Why is adsorption an exothermic process?
Answer» Why is adsorption an exothermic process?

Discussion

8.	How many water molecules are present in one mL of water (d=1g/mL)?
Answer» How many water molecules are present in one mL of water (d=1g/mL)?

Discussion

9.	What are the dimensions of universal has constant if you use theta to denote temperature?
Answer» What are the dimensions of universal has constant if you use theta to denote temperature?

Discussion

10.	Which of the following is not formed by the reaction of Cl2 with CH4 in presence of sunlight?
Answer» Which of the following is not formed by the reaction of $C l_{2}$ with $C H_{4}$ in presence of sunlight?

Discussion

11.	How solids hcp and CCP structure differenciatd from each other?
Answer» How solids hcp and CCP structure differenciatd from each other?

Discussion

12.	Which of the following elements fwill gain one electron more readily in comparison to other elements of their group? (a) S(g) (b) Na (g) (c) O (g) (d) Cl(g)
Answer» Which of the following elements fwill gain one electron more readily in comparison to other elements of their group? (a) S(g) (b) Na (g) (c) O (g) (d) Cl(g)

Discussion

13.	The bond order of a molecule is given by:
Answer» The bond order of a molecule is given by:

Discussion

14.	Which of the following is same for both normal hydrogen and deuterium?
Answer» Which of the following is same for both normal hydrogen and deuterium?

Discussion

15.	The polarizing power of which of the following pair is similar
Answer» The polarizing power of which of the following pair is similar

Discussion

16.	The number of geometric isomers possible for the complex [CoL2Cl2]−(L=H2NCH2CH2O−) ___
Answer» The number of geometric isomers possible for the complex $[C o L_{2} C l_{2}]^{-} (L = H_{2} N C H_{2} C H_{2} O^{-})$ ___

Discussion

17.	A strongly alkaline solution of a monoaminodicarboxylic acid contains how many basic groups ?
Answer» A strongly alkaline solution of a monoaminodicarboxylic acid contains how many basic groups ?

Discussion

18.	Why is geminal diols structure unstable?
Answer» Why is geminal diols structure unstable?

Discussion

19.	Potassium metal is commercially prepared by the reduction of molten KCl with metallic sodium is 8500 C (1123K). This method is based upon the following principle
Answer» Potassium metal is commercially prepared by the reduction of molten KCl with metallic sodium is $850^{0}$ C (1123K). This method is based upon the following principle

Discussion

20.	In the reaction Y is : (CH3)2COCH3MgBr−−−−−−→EtherXH2O→Y,
Answer» In the reaction Y is : $(C H_{3})_{2} C O C H_{3} M g B r - ----- \to E t h e r X H_{2} O \to Y,$

Discussion

21.	Chorobenzene is prepared commercially by
Answer» Chorobenzene is prepared commercially by

Discussion

22.	The appropriate reagent for the following transformation is :
Answer» The appropriate reagent for the following transformation is :

Discussion

23.	The major product formed is
Answer» The major product formed is

Discussion

24.	Why do we consider only compunds and not elements to study solid State?
Answer» Why do we consider only compunds and not elements to study solid State?

Discussion

25.	Spin magnetic moment of Xk+(Z=26) is √24BM.Hence, the number of unpaired electrons and value of k:
Answer» Spin magnetic moment of $X^{k +} (Z = 26)$ is $\sqrt{24}$ BM.Hence, the number of unpaired electrons and value of k:

Discussion

26.	The IUPAC name(s) of the following compound is (are)
Answer» The IUPAC name(s) of the following compound is (are)

26.

The IUPAC name(s) of the following compound is (are)

Answer»

The IUPAC name(s) of the following compound is (are)

Discussion

27.	The correct order/s for the given pair of isomers is:
Answer» The correct order/s for the given pair of isomers is:

Discussion

28.	What will be the conjugate bases for the Brönsted acids: HF, H2SO4 and HCO3?
Answer» What will be the conjugate bases for the Brönsted acids: HF, $H_{2} S O_{4}$ and $H C O_{3}$ ?

Discussion

29.	What is the product formed when XeF6 reacts with NH3?
Answer» What is the product formed when $X e F_{6}$ reacts with $N H_{3}$ ?

Discussion

30.	Why molar conductivity increases on dilution of solution?
Answer» Why molar conductivity increases on dilution of solution?

Discussion

31.	Quantum numbers are
Answer» Quantum numbers are

Discussion

32.	Which of the following nuclides is the least stable ?
Answer» Which of the following nuclides is the least stable ?

Discussion

33.	(A) follows first order reaction : A→ Products; concentration of A changes from 0.1 M to 0.025 M in 40 minutes. Find the rate of reaction of A when its concentration is 0.01 M.
Answer» (A) follows first order reaction : $A \to$ Products; concentration of A changes from 0.1 M to 0.025 M in 40 minutes. Find the rate of reaction of A when its concentration is 0.01 M.

Discussion

34.	Niobium crystallizes in HCP structure. If all the tetrahedral voids present on the edge of the unit cell (shown in the figure) are occupied by boron atoms and carbon atoms fill half of the octahedral voids present, then the formula of the resulting interstitial compound is:
Answer» Niobium crystallizes in HCP structure. If all the tetrahedral voids present on the edge of the unit cell (shown in the figure) are occupied by boron atoms and carbon atoms fill half of the octahedral voids present, then the formula of the resulting interstitial compound is:

Discussion

35.	The heat of combustion of carbon to CO2 is −393.5 kJ/mol. The heat released upon formation of 35.2 g of CO2 from carbon and oxygen gas is:
Answer» The heat of combustion of carbon to $C O_{2}$ is $- 393.5 kJ/mol.$ The heat released upon formation of $35.2 g$ of $C O_{2}$ from carbon and oxygen gas is:

Discussion

36.	The rate constant of the reaction A→B is 0.6×10−3 M/s. If the concentration of A is 5 M, then concentration of B after 20 minutes is :-
Answer» The rate constant of the reaction $A \to B$ is $0.6 \times 10^{- 3} M/s$ . If the concentration of $A$ is $5 M$ , then concentration of $B$ after 20 minutes is :-

Discussion

37.	The normality of 0.1MB(OH)3 is
Answer» $The normality of 0.1 M B (O H)_{3}$ is

37.

The normality of 0.1MB(OH)3 is

Answer»

$The normality of 0.1 M B (O H)_{3}$ is

Discussion

38.	According to Bronsted-Lowry concept, the correct order of relative strength of bases follows the order:
Answer» According to Bronsted-Lowry concept, the correct order of relative strength of bases follows the order:

Discussion

39.	Consider the nuclear reaction X200→A110+B90 If the binding energy per nucleon for X, A and B is 7.4 MeV, 8.2 MeV and 8.2 MeV respectively, what is the energy released?
Answer» Consider the nuclear reaction $X^{200} \to A^{110} + B^{90}$ If the binding energy per nucleon for X, A and B is $7.4 MeV$ , $8.2 MeV$ and $8.2 MeV$ respectively, what is the energy released?

Discussion

40.	The equivalent weight of an element is 4. Its chloride has a vapour density 59.25. Then what is the valency of the element?
Answer» The equivalent weight of an element is 4. Its chloride has a vapour density 59.25. Then what is the valency of the element?

Discussion

41.	The average degree of freedom per molecule of a gas is 6. The gas performs 25 J work, while expanding at constant pressure. The heat absorbed by the gas is (in J)
Answer» The average degree of freedom per molecule of a gas is $6$ . The gas performs $25 J$ work, while expanding at constant pressure. The heat absorbed by the gas is (in $J)$

Discussion

42.	Redox reaction involves transfer of electrons between 2 chemical species. An unbalanced and incomplete example is shown below: N2+H3PO2→HN3+P4O6 If the above reaction were unidirectional towards right, what fraction of P4O6 would be left unreacted if reaction were started with stoichiometric amount of reactants.
Answer» Redox reaction involves transfer of electrons between 2 chemical species. An unbalanced and incomplete example is shown below: $N_{2} + H_{3} P O_{2} \to H N_{3} + P_{4} O_{6}$ If the above reaction were unidirectional towards right, what fraction of $P_{4} O_{6}$ would be left unreacted if reaction were started with stoichiometric amount of reactants.

Discussion

43.	Which of the following compound does not undergo diazotization reaction?
Answer» Which of the following compound does not undergo diazotization reaction?

Discussion

44.	Compare the relative stabilities of the given compounds:
Answer» Compare the relative stabilities of the given compounds:

Discussion

45.	Match the following functional group test for glucose
Answer» Match the following functional group test for glucose

Discussion

46.	Boron cannot form which one of the following anions?
Answer» Boron cannot form which one of the following anions?

Discussion

47.	Energy required to dissociate 4 g of gaseous hydrogen into free gaseous atoms is 208 kcal at 25oC. The bond energy of H-H bond will be:
Answer» Energy required to dissociate 4 g of gaseous hydrogen into free gaseous atoms is 208 kcal at 25^oC. The bond energy of H-H bond will be:

Discussion

48.	Distinguish between the terms homopolymer and copolymer and given an example of each.
Answer» Distinguish between the terms homopolymer and copolymer and given an example of each.

Discussion

49.	Which of the following can be a possible contact angle with water for a colloidal particle?
Answer» Which of the following can be a possible contact angle with water for a colloidal particle?

Discussion

50.	For a reaction, A (g) ⇌ B (g) at equilibrium, the partial pressure of B is found to be one fourth of the partial pressure of A. The value of ΔG∘ of the reaction A → B is:
Answer» For a reaction, A (g) $⇌$ B (g) at equilibrium, the partial pressure of B is found to be one fourth of the partial pressure of A. The value of $Δ G^{\circ}$ of the reaction A $\to$ B is:

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

What is the potential energy of the electron in the L-shell of the hydrogen atom?

In the following compound, according to the rules of IUPAC nomenclature, the groups designated as A, B, C will be numbered as:

What is the n-factor of H3PO3 ?

If an atom has sub-atomic particles then why is atom said to be indivisible?

O2 is bubbled through water at 293K. How many moles of O2 will dissolve in 1L of water, if partial pressure of 02 is 2 kilobar and Kh is 34.86 kilobar?

What is berzelius hypothesis? Is it true?

Why is adsorption an exothermic process?

How many water molecules are present in one mL of water (d=1g/mL)?

What are the dimensions of universal has constant if you use theta to denote temperature?

Which of the following is not formed by the reaction of Cl2 with CH4 in presence of sunlight?

How solids hcp and CCP structure differenciatd from each other?

Which of the following elements fwill gain one electron more readily in comparison to other elements of their group? (a) S(g) (b) Na (g) (c) O (g) (d) Cl(g)

The bond order of a molecule is given by:

Which of the following is same for both normal hydrogen and deuterium?

The polarizing power of which of the following pair is similar

The number of geometric isomers possible for the complex [CoL2Cl2]−(L=H2NCH2CH2O−) ___

A strongly alkaline solution of a monoaminodicarboxylic acid contains how many basic groups ?

Why is geminal diols structure unstable?

Potassium metal is commercially prepared by the reduction of molten KCl with metallic sodium is 8500 C (1123K). This method is based upon the following principle

In the reaction Y is : (CH3)2COCH3MgBr−−−−−−→EtherXH2O→Y,

Chorobenzene is prepared commercially by

The appropriate reagent for the following transformation is :

The major product formed is

Why do we consider only compunds and not elements to study solid State?

Spin magnetic moment of Xk+(Z=26) is √24BM.Hence, the number of unpaired electrons and value of k:

The IUPAC name(s) of the following compound is (are)

The correct order/s for the given pair of isomers is:

What will be the conjugate bases for the Brönsted acids: HF, H2SO4 and HCO3?

What is the product formed when XeF6 reacts with NH3?

Why molar conductivity increases on dilution of solution?

Quantum numbers are

Which of the following nuclides is the least stable ?

(A) follows first order reaction : A→ Products; concentration of A changes from 0.1 M to 0.025 M in 40 minutes. Find the rate of reaction of A when its concentration is 0.01 M.

Niobium crystallizes in HCP structure. If all the tetrahedral voids present on the edge of the unit cell (shown in the figure) are occupied by boron atoms and carbon atoms fill half of the octahedral voids present, then the formula of the resulting interstitial compound is:

The heat of combustion of carbon to CO2 is −393.5 kJ/mol. The heat released upon formation of 35.2 g of CO2 from carbon and oxygen gas is:

The rate constant of the reaction A→B is 0.6×10−3 M/s. If the concentration of A is 5 M, then concentration of B after 20 minutes is :-

The normality of 0.1MB(OH)3 is

According to Bronsted-Lowry concept, the correct order of relative strength of bases follows the order:

Consider the nuclear reaction X200→A110+B90 If the binding energy per nucleon for X, A and B is 7.4 MeV, 8.2 MeV and 8.2 MeV respectively, what is the energy released?

The equivalent weight of an element is 4. Its chloride has a vapour density 59.25. Then what is the valency of the element?

The average degree of freedom per molecule of a gas is 6. The gas performs 25 J work, while expanding at constant pressure. The heat absorbed by the gas is (in J)

Which of the following compound does not undergo diazotization reaction?

Compare the relative stabilities of the given compounds:

Match the following functional group test for glucose

Boron cannot form which one of the following anions?

Energy required to dissociate 4 g of gaseous hydrogen into free gaseous atoms is 208 kcal at 25oC. The bond energy of H-H bond will be:

Distinguish between the terms homopolymer and copolymer and given an example of each.

Which of the following can be a possible contact angle with water for a colloidal particle?

For a reaction, A (g) ⇌ B (g) at equilibrium, the partial pressure of B is found to be one fourth of the partial pressure of A. The value of ΔG∘ of the reaction A → B is: