46295 + Interview Questions in Chemistry

1.	Which reaction follows inversion of configuration SN1 or SN2?
Answer» Which reaction follows inversion of configuration SN1 or SN2?

Discussion

2.	A certain sample of cuprous sulphide is found to have the composition Cu1.8S due to incorporation of Cu2+ ions in the lattice. What is the mole % of Cu2+ in total copper content in this crystal? (Cu is present as Cu+ and Cu2+).
Answer» A certain sample of cuprous sulphide is found to have the composition $C u_{1.8} S$ due to incorporation of $C u^{2 +}$ ions in the lattice. What is the mole % of $C u^{2 +}$ in total copper content in this crystal? (Cu is present as $C u^{+}$ and $C u^{2 +}$ ).

Discussion

3.	Which of the following resonance structure is not a contributor to the cyclohexadienyl cation intermediate in the nitration of benzene?
Answer» Which of the following resonance structure is not a contributor to the cyclohexadienyl cation intermediate in the nitration of benzene?

Discussion

4.	Kp for the reaction NH4I(s)---->NH3(g)+HI(g) is 1/4 at a particular temperature. Above equilibrium is established by taking 4 moles of NH4I(s) in 100 litre container, then moles of NH4I(s) left in the container at equilibrium is
Answer» Kp for the reaction NH4I(s)---->NH3(g)+HI(g) is 1/4 at a particular temperature. Above equilibrium is established by taking 4 moles of NH4I(s) in 100 litre container, then moles of NH4I(s) left in the container at equilibrium is

Discussion

5.	At what temperature, Na2CO3 forms monohydrate and anhydrous Na2CO3? Please answer ASAP, as tomorrow is my exam!!!!!
Answer» At what temperature, Na₂CO₃ forms monohydrate and anhydrous Na₂CO₃? Please answer ASAP, as tomorrow is my exam!!!!!

Discussion

6.	3 grams of acetic acid is added to 250 mL of 0.1 M HCl and the solution is made up to 500 mL. To 20 mL of this solution 12 mL of 5 M NaOH is added. The pH of this solution is . (Given: log 3=0.4771, pKa of acetic acid = 4.74, molar mass of acetic acid = 60 g/mole).
Answer» 3 grams of acetic acid is added to 250 mL of 0.1 M $H C l$ and the solution is made up to 500 mL. To 20 mL of this solution $\frac{1}{2} mL$ of 5 M $N a O H$ is added. The pH of this solution is . (Given: $log 3 = 0.4771, p K_{a}$ of acetic acid = 4.74, molar mass of acetic acid = 60 g/mole).

Discussion

7.	Factors affecting solubility of a solid in a liquid
Answer» Factors affecting solubility of a solid in a liquid

Discussion

8.	80% purity of 200 g caco3 decomposes to produce the CO2,FIND the volume of co2 gas at Stp(approximately)
Answer» 80% purity of 200 g caco3 decomposes to produce the CO2,FIND the volume of co2 gas at Stp(approximately)

Discussion

9.	Which of the following structure is more stable?
Answer» Which of the following structure is more stable?

Discussion

10.	Cellulose acetate is a:
Answer» Cellulose acetate is a:

Discussion

11.	What is the hybridisation of oxygen in O2?
Answer» What is the hybridisation of oxygen in O2?

Discussion

12.	Write the IUPAC name of the given compound: CH3−NH−CH2− CH−CH3\| CH3
Answer» Write the IUPAC name of the given compound: $\begin{matrix} C H_{3} & - & N H & - & C H_{2} & - & C H & - & C H_{3} \| C H_{3} \end{matrix}$

Discussion

13.	Which of following will not be oxidised by O3?
Answer» Which of following will not be oxidised by $O_{3}$ ?

Discussion

14.	The average kinetic energy per molecule of ideal gas is equal to ____.
Answer» The average kinetic energy per molecule of ideal gas is equal to ____.

Discussion

15.	For the reaction, AB(g)⇌A(g)+B(g), We start with 1 mole of AB 25% of which dissociates at a total pressure of P, P is related to Kp as:
Answer» For the reaction, $A B (g) ⇌ A (g) + B (g)$ , We start with $1$ mole of AB $25 %$ of which dissociates at a total pressure of $P$ , $P$ is related to $K_{p}$ as:

Discussion

16.	The major product of the following reaction is:
Answer» The major product of the following reaction is:

Discussion

17.	Which of the following are the correct reasons for anomalous bhaviour of lithium? (a) Exceptionally small size of its atom (b) Its high polarising power (c) It has the high degree of hydration (d) Exceptionally low the enthalpy
Answer» Which of the following are the correct reasons for anomalous bhaviour of lithium? (a) Exceptionally small size of its atom (b) Its high polarising power (c) It has the high degree of hydration (d) Exceptionally low the enthalpy

Discussion

18.	Assertion (A): Electrophilic substitution reactions takes place in phenol than in nitro benzene Reason (R): Hydrogen bonding is present in phenol but not in nitrobenzene
Answer» Assertion (A): Electrophilic substitution reactions takes place in phenol than in nitro benzene Reason (R): Hydrogen bonding is present in phenol but not in nitrobenzene

18.

Assertion (A): Electrophilic substitution reactions takes place in phenol than in nitro benzene Reason (R): Hydrogen bonding is present in phenol but not in nitrobenzene

Answer»

Assertion (A): Electrophilic substitution reactions takes place in phenol than in nitro benzene

Reason (R): Hydrogen bonding is present in phenol but not in nitrobenzene

Discussion

19.	The KPKC ratio will be highest in case of
Answer» The $\frac{K_{P}}{K_{C}}$ ratio will be highest in case of

Discussion

20.	The \|HFH––––––– bond angle in the following structure
Answer» The $\| H F H - ----- -$ bond angle in the following structure

Discussion

21.	Neon gas is generally used in the sign boards. If it emits strongly at 616 nm, calculate (a) the frequency of emission, (b) distance traveled by this radiation in 30 s (c) energy of quantum and (d) number of quanta present if it produces 2 J of energy
Answer» Neon gas is generally used in the sign boards. If it emits strongly at 616 nm, calculate (a) the frequency of emission, (b) distance traveled by this radiation in 30 s (c) energy of quantum and (d) number of quanta present if it produces 2 J of energy

Discussion

22.	Which of the following depicts the accurate magnetic character of NO2?
Answer» Which of the following depicts the accurate magnetic character of $N O_{2}$ ?

Discussion

23.	Which reaction can be used for the direct conversion of amides into 10 amine ?
Answer» Which reaction can be used for the direct conversion of amides into 1⁰ amine ?

Discussion

24.	Select correct statement:-
Answer» Select correct statement:-

Discussion

25.	Hydrolysis of sucrose is called:
Answer» Hydrolysis of sucrose is called:

Discussion

26.	The value of x in the partial redox equation MnO−4+8H++xe=Mn2++4H2O is
Answer» The value of x in the partial redox equation $M n O_{4}^{-} + 8 H^{+} + x e = M n^{2 +} + 4 H_{2} O$ is

Discussion

27.	The IUPAC name of β-ethoxy-α-hydroxy propanic acid is
Answer» The IUPAC name of $β$ -ethoxy- $α$ -hydroxy propanic acid is

Discussion

28.	The temperature above which beta sulphur is stable is:
Answer» The temperature above which beta sulphur is stable is:

Discussion

29.	Question 50 All the C - O bonds in carbonate ion (CO2−3) are equal in length. Explain
Answer» Question 50 All the C - O bonds in carbonate ion $(C O_{3}^{2 -})$ are equal in length. Explain

29.

Question 50 All the C - O bonds in carbonate ion (CO2−3) are equal in length. Explain

Answer»

Question 50

All the C - O bonds in carbonate ion $(C O_{3}^{2 -})$ are equal in length. Explain

Discussion

30.	1 mole of how many of the following acids neutralize exactly one mole of NaOH, under required favorable conditions? HCl,HNO3,H2SO4,H2SO3,H3PO4,H3PO3,H3PO2,H4P2O5,H3BO3___
Answer» 1 mole of how many of the following acids neutralize exactly one mole of NaOH, under required favorable conditions? $H C l, H N O_{3}, H_{2} S O_{4}, H_{2} S O_{3}, H_{3} P O_{4}, H_{3} P O_{3}, H_{3} P O_{2}, H_{4} P_{2} O_{5}, H_{3} B O_{3}$ ___

Discussion

31.	If the radius of the octahedral void is r and radius of the atoms in close-packing is R, derive relation between nr and R.
Answer» If the radius of the octahedral void is r and radius of the atoms in close-packing is R, derive relation between nr and R.

Discussion

32.	44.8 L of O2 gas is collected at STP. If 4 mol of total KClO3 is used for the following reactions: KClO3(s)⟶KCl(s)+O2(g) KClO3⟶KClO4+KCl the number of moles of KClO4 formed woudl be:
Answer» 44.8 L of $O_{2}$ gas is collected at STP. If 4 mol of total $K C l O_{3}$ is used for the following reactions: $K C l O_{3} (s) ⟶ K C l (s) + O_{2} (g)$ $K C l O_{3} ⟶ K C l O_{4} + K C l$ the number of moles of $K C l O_{4}$ formed woudl be:

Discussion

33.	The correct structural formula of 1,2-Diethyl-1,8-dimethyl-5- propylcyclooctane is :
Answer» The correct structural formula of 1,2-Diethyl-1,8-dimethyl-5- propylcyclooctane is :

Discussion

34.	Which halide has the highest boiling point?
Answer» Which halide has the highest boiling point?

Discussion

35.	A 8 gm sample of iron are containing V% (by wt) of iron Fe2+ was present in 1 L solution. This solution required V mL of a KMnO4 solution for oxidation of Fe2+in acidic medium. If in another titration 20 mL of same KMnO4 is required, for oxidation of 20 mL H2O2 in acidic medium. Find volume strength of H2O2
Answer» A $8 g m$ sample of iron are containing $V %$ (by wt) of iron $F e^{2 +}$ was present in $1 L$ solution. This solution required $V m L$ of a $K M n O_{4}$ solution for oxidation of $F e^{2 +}$ in acidic medium. If in another titration $20 m L$ of same $K M n O_{4}$ is required, for oxidation of $20 m L H_{2} O_{2}$ in acidic medium. Find volume strength of $H_{2} O_{2}$

Discussion

36.	As per IUPAC rules, which of the following groups will be regarded as the principal functional group when present with others?
Answer» As per IUPAC rules, which of the following groups will be regarded as the principal functional group when present with others?

Discussion

37.	Which one of the following compounds is most acidic
Answer» Which one of the following compounds is most acidic

37.

Which one of the following compounds is most acidic

Answer»

Which one of the following compounds is most acidic

Discussion

38.	For the equilibrium 2NO2(g) ⇌ N2O4(g) + heat(14.6 kcal) the increase in temperature would
Answer» For the equilibrium $2 N O_{2} (g) ⇌ N_{2} O_{4} (g) + h e a t (14.6 k c a l)$ the increase in temperature would

38.

For the equilibrium 2NO2(g) ⇌ N2O4(g) + heat(14.6 kcal) the increase in temperature would

Answer»

For the equilibrium $2 N O_{2} (g) ⇌ N_{2} O_{4} (g) + h e a t (14.6 k c a l)$ the increase in

temperature would

Discussion

39.	Photochemical smog always contains
Answer» Photochemical smog always contains

Discussion

40.	1 Kg of ice at -20∘C is mixed with 2 Kg of water at 90∘C. Assuming that there is no loss of energy to the environment, what will be the final temperature of the mixture? (Assume latent heat of ice = 334.4 KJ/Kg, specific heat of water and ice are 4.18 kJ/(kg.K) and 2.09 kJ/(kg.K), respectively.)
Answer» 1 Kg of ice at -20 $^{\circ}$ C is mixed with 2 Kg of water at 90 $^{\circ}$ C. Assuming that there is no loss of energy to the environment, what will be the final temperature of the mixture? (Assume latent heat of ice = 334.4 KJ/Kg, specific heat of water and ice are 4.18 kJ/(kg.K) and 2.09 kJ/(kg.K), respectively.)

Discussion

41.	Ammonia forms a large number of complexes with transition metal ions. Hybridisation easily explains the case of sigma donation capability of NH3 and PH3. Choose the correct statement from the following:
Answer» Ammonia forms a large number of complexes with transition metal ions. Hybridisation easily explains the case of sigma donation capability of $N H_{3}$ and $P H_{3}$ . Choose the correct statement from the following:

Discussion

42.	10-3 W of 5000 0A Light is directed on a photoelectric cell. If the current in the cell is 0.16 μA, the percentage of incident photons which produce photoelectrons, is
Answer» 10^-3 W of 5000 ⁰A Light is directed on a photoelectric cell. If the current in the cell is 0.16 μA, the percentage of incident photons which produce photoelectrons, is

Discussion

43.	What is the volume occupied by 0.25 moles of NH3 gas at STP?
Answer» What is the volume occupied by 0.25 moles of $N H_{3}$ gas at STP?

Discussion

44.	Vitamins are generally involved in forming component of enzyme called
Answer» Vitamins are generally involved in forming component of enzyme called

Discussion

45.	How are environment and economy interdependent?
Answer» How are environment and economy interdependent?

Discussion

46.	Write one difference in each of the following: (a) Multimolecular colloid and Associated colloid (b) Coagulation and Peptization (c) Homogeneous catalysis and Heterogeneous catalysis
Answer» Write one difference in each of the following: (a) Multimolecular colloid and Associated colloid (b) Coagulation and Peptization (c) Homogeneous catalysis and Heterogeneous catalysis

Discussion

47.	The splitting of d-orbitals in tetrahedral complexes is
Answer» The splitting of d-orbitals in tetrahedral complexes is

Discussion

48.	Which of the following statements is correct for a strong electrolyte :
Answer» Which of the following statements is correct for a strong electrolyte :

Discussion

49.	The emf of the cell M\|M(NO3)x(0.01M)\|\|M(NO3)x(0.1M)\|M is found to be 0.0197 V at standard conditions. The valency of the metal in the metal nitrate is
Answer» The emf of the cell $M \| M (N O_{3})_{x} (0.01 M) \| \| M (N O_{3})_{x} (0.1 M) \| M$ is found to be 0.0197 V at standard conditions. The valency of the metal in the metal nitrate is

Discussion

50.	Which of the following hydrides has the least boiling point ?
Answer» Which of the following hydrides has the least boiling point ?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Which reaction follows inversion of configuration SN1 or SN2?

A certain sample of cuprous sulphide is found to have the composition Cu1.8S due to incorporation of Cu2+ ions in the lattice. What is the mole % of Cu2+ in total copper content in this crystal? (Cu is present as Cu+ and Cu2+).

Which of the following resonance structure is not a contributor to the cyclohexadienyl cation intermediate in the nitration of benzene?

Kp for the reaction NH4I(s)---->NH3(g)+HI(g) is 1/4 at a particular temperature. Above equilibrium is established by taking 4 moles of NH4I(s) in 100 litre container, then moles of NH4I(s) left in the container at equilibrium is

At what temperature, Na2CO​​3 forms monohydrate and anhydrous Na2CO​​3? Please answer ASAP, as tomorrow is my exam!!!!!

3 grams of acetic acid is added to 250 mL of 0.1 M HCl and the solution is made up to 500 mL. To 20 mL of this solution 12 mL of 5 M NaOH is added. The pH of this solution is . (Given: log 3=0.4771, pKa of acetic acid = 4.74, molar mass of acetic acid = 60 g/mole).

Factors affecting solubility of a solid in a liquid

80% purity of 200 g caco3 decomposes to produce the CO2,FIND the volume of co2 gas at Stp(approximately)

Which of the following structure is more stable?

Cellulose acetate is a:

What is the hybridisation of oxygen in O2?

Write the IUPAC name of the given compound: CH3−NH−CH2− CH−CH3| CH3

Which of following will not be oxidised by O3?

The average kinetic energy per molecule of ideal gas is equal to ____.

For the reaction, AB(g)⇌A(g)+B(g), We start with 1 mole of AB 25% of which dissociates at a total pressure of P, P is related to Kp as:

The major product of the following reaction is:

Which of the following are the correct reasons for anomalous bhaviour of lithium? (a) Exceptionally small size of its atom (b) Its high polarising power (c) It has the high degree of hydration (d) Exceptionally low the enthalpy

Assertion (A): Electrophilic substitution reactions takes place in phenol than in nitro benzene Reason (R): Hydrogen bonding is present in phenol but not in nitrobenzene

The KPKC ratio will be highest in case of

The |HFH––––––– bond angle in the following structure

Neon gas is generally used in the sign boards. If it emits strongly at 616 nm, calculate (a) the frequency of emission, (b) distance traveled by this radiation in 30 s (c) energy of quantum and (d) number of quanta present if it produces 2 J of energy

Which of the following depicts the accurate magnetic character of NO2?

Which reaction can be used for the direct conversion of amides into 10 amine ?

Select correct statement:-

Hydrolysis of sucrose is called:

The value of x in the partial redox equation MnO−4+8H++xe=Mn2++4H2O is

The IUPAC name of β-ethoxy-α-hydroxy propanic acid is

The temperature above which beta sulphur is stable is:

Question 50 All the C - O bonds in carbonate ion (CO2−3) are equal in length. Explain

1 mole of how many of the following acids neutralize exactly one mole of NaOH, under required favorable conditions? HCl,HNO3,H2SO4,H2SO3,H3PO4,H3PO3,H3PO2,H4P2O5,H3BO3___

If the radius of the octahedral void is r and radius of the atoms in close-packing is R, derive relation between nr and R.

44.8 L of O2 gas is collected at STP. If 4 mol of total KClO3 is used for the following reactions: KClO3(s)⟶KCl(s)+O2(g) KClO3⟶KClO4+KCl the number of moles of KClO4 formed woudl be:

The correct structural formula of 1,2-Diethyl-1,8-dimethyl-5- propylcyclooctane is :

Which halide has the highest boiling point?

As per IUPAC rules, which of the following groups will be regarded as the principal functional group when present with others?

Which one of the following compounds is most acidic

For the equilibrium 2NO2(g) ⇌ N2O4(g) + heat(14.6 kcal) the increase in temperature would

Photochemical smog always contains

Ammonia forms a large number of complexes with transition metal ions. Hybridisation easily explains the case of sigma donation capability of NH3 and PH3. Choose the correct statement from the following:

10-3 W of 5000 0A Light is directed on a photoelectric cell. If the current in the cell is 0.16 μA, the percentage of incident photons which produce photoelectrons, is

What is the volume occupied by 0.25 moles of NH3 gas at STP?

Vitamins are generally involved in forming component of enzyme called

How are environment and economy interdependent?

Write one difference in each of the following: (a) Multimolecular colloid and Associated colloid (b) Coagulation and Peptization (c) Homogeneous catalysis and Heterogeneous catalysis

The splitting of d-orbitals in tetrahedral complexes is

Which of the following statements is correct for a strong electrolyte :

The emf of the cell M|M(NO3)x(0.01M)||M(NO3)x(0.1M)|M is found to be 0.0197 V at standard conditions. The valency of the metal in the metal nitrate is

Which of the following hydrides has the least boiling point ?

At what temperature, Na2CO3 forms monohydrate and anhydrous Na2CO3? Please answer ASAP, as tomorrow is my exam!!!!!