46295 + Interview Questions in Chemistry

1.	For the equilibrium SO2Cl2(g)⇌SO2(g)+Cl2(g); what is the temperature at which Kp (atm)Kc (M)=3?
Answer» For the equilibrium $S O_{2} C l_{2} (g) ⇌ S O_{2} (g) + C l_{2} (g)$ ; what is the temperature at which $\frac{K_{p} (a t m)}{K_{c} (M)} = 3$ ?

Discussion

2.	find the fraction of work done by a gas and the heat supplied for an isobaric process, if amma is adiabatic component
Answer» find the fraction of work done by a gas and the heat supplied for an isobaric process, if amma is adiabatic component

Discussion

3.	50 1-cyano 4 nitro benzene is subject to nitration. What is the major product? 1. 1-cyano2,4 dinitrobenzene 2. 1-cyano3,4 dinitrobenzene 3. 1-cyano 6,4 dinitrobenzene 4. All of these
Answer» 50 1-cyano 4 nitro benzene is subject to nitration. What is the major product? 1. 1-cyano2,4 dinitrobenzene 2. 1-cyano3,4 dinitrobenzene 3. 1-cyano 6,4 dinitrobenzene 4. All of these

Discussion

4.	Explain electronic configuration of He and N according to Pauli and Hund's principle.
Answer» Explain electronic configuration of He and N according to Pauli and Hund's principle.

Discussion

5.	2. One gram of (94)Pu(239) is a alpha emmiter with a half life of 24400 years.given 1g sample of this plutonium how many alpha particles will emit per second
Answer» 2. One gram of (94)Pu(239) is a alpha emmiter with a half life of 24400 years.given 1g sample of this plutonium how many alpha particles will emit per second

Discussion

6.	C_6H_5OCH_3\xrightarrow[{t-BuOH}]{Na/liq.NH_3
Answer» C_6H_5OCH_3\xrightarrow[{t-BuOH}]{Na/liq.NH_3

Discussion

7.	A non-volatile solute (urea) is dissolved in 100 g of water in order to decrease the vapour pressure of water by 25%. Which of the following option(s) is/are correct?Assume the solution to be non-dilute.
Answer» A non-volatile solute (urea) is dissolved in $100 g$ of water in order to decrease the vapour pressure of water by $25 %$ . Which of the following option(s) is/are correct? Assume the solution to be non-dilute.

Discussion

8.	14. The reduction potential of hydrogen half cell will be negative if 1.p_{H_2}=1 atm and \lbrack H^+\rbrack=1 M 2.p_{H_2}=2 atm and\lbrack H^+\rbrack=2M 3.p_{H_2}=6 atm and\lbrack H^+\rbrack=3M 4.p_{H_2}=1 atm and\lbrack H^+\rbrack=2M
Answer» 14. The reduction potential of hydrogen half cell will be negative if 1.p_{H_2}=1 atm and \lbrack H^+\rbrack=1 M 2.p_{H_2}=2 atm and\lbrack H^+\rbrack=2M 3.p_{H_2}=6 atm and\lbrack H^+\rbrack=3M 4.p_{H_2}=1 atm and\lbrack H^+\rbrack=2M

Discussion

9.	which of the following does not decolourise iodine?a)Na2SO3b)Na2S2O3C)NaCld)NaOH
Answer» which of the following does not decolourise iodine? a)Na2SO3 b)Na2S2O3 C)NaCl d)NaOH

Discussion

10.	Conductivityof 0.00241 M acetic acid is 7.896 × 10−5S cm−1.Calculate its molar conductivity and if foracetic acid is 390.5 S cm2mol−1,what is its dissociation constant?
Answer» Conductivity of 0.00241 M acetic acid is 7.896 × 10⁻⁵ S cm⁻¹. Calculate its molar conductivity and if for acetic acid is 390.5 S cm² mol⁻¹, what is its dissociation constant?

Discussion

11.	The reagent with which both acetaldehyde and acetone react easily is :
Answer» The reagent with which both acetaldehyde and acetone react easily is :

Discussion

12.	11. Which of the following aryl amines undergo diazotisation most readily? 1) p-nitro aniline 2) p-chloro aniline 3) p-methoxy aniline 4) p-methyl aniline
Answer» 11. Which of the following aryl amines undergo diazotisation most readily? 1) p-nitro aniline 2) p-chloro aniline 3) p-methoxy aniline 4) p-methyl aniline

Discussion

13.	On increasing pressure the coordination number of NaCl type structure changes from:
Answer» On increasing pressure the coordination number of $N a C l$ type structure changes from:

Discussion

14.

The first (ΔiH1) and the second (ΔiH) ionization enthalpies (in kJ mol–1) and the (ΔegH) electron gain enthalpy (in kJ mol–1) of a few elements are given below: Elements ΔiH ΔiH ΔegH I 520 7300 –60 II 419 3051 –48 III 1681 3374 –328 IV 1008 1846 –295 V 2372 5251 +48 VI 738 1451 –40 Which of the above elements is likely to be : (a) the least reactive element. (b) the most reactive metal. (c) the most reactive non-metal. (d) the least reactive non-metal. (e) the metal which can form a stable binary halide of the formula MX2, (X=halogen). (f) the metal which can form a predominantly stable covalent halide of the formula MX (X=halogen)?

Answer»

The first (Δ_iH1) and the second (Δ_iH) ionization enthalpies (in kJ mol^–1) and the (Δ_egH) electron gain enthalpy (in kJ mol^–1) of a few elements are given below:

Elements	Δ_iH	Δ_iH	Δ_egH
I	520	7300	–60
II	419	3051	–48
III	1681	3374	–328
IV	1008	1846	–295
V	2372	5251	+48
VI	738	1451	–40

Which of the above elements is likely to be :

(a) the least reactive element.

(b) the most reactive metal.

(c) the most reactive non-metal.

(d) the least reactive non-metal.

(e) the metal which can form a stable binary halide of the formula MX₂, (X=halogen).

(f) the metal which can form a predominantly stable covalent halide of the formula MX (X=halogen)?

Discussion

15.	Question 5 (d)Draw the electron dot structure for F2.
Answer» Question 5 (d) Draw the electron dot structure for $F_{2}$ .

Discussion

16.	19. Markovnikov's rule is not applicable in (1) 2-pentene (3) 1-butene (2) 1-pentene (4) 2-butene
Answer» 19. Markovnikov's rule is not applicable in (1) 2-pentene (3) 1-butene (2) 1-pentene (4) 2-butene

Discussion

17.	Which of the following molecules has the least bond angle?
Answer» Which of the following molecules has the least bond angle?

Discussion

18.	Mention the products formed when benzene sulphonyl chloride in aqueous naoh reacts withA. Aniline B. p-toulidine C. N ethyl aniline
Answer» Mention the products formed when benzene sulphonyl chloride in aqueous naoh reacts with A. Aniline B. p-toulidine C. N ethyl aniline

Discussion

19.	Asolution is obtained by mixing 300 g of 25% solution and 400 g of 40%solution by mass. Calculate the mass percentage of the resultingsolution.
Answer» A solution is obtained by mixing 300 g of 25% solution and 400 g of 40% solution by mass. Calculate the mass percentage of the resulting solution.

Discussion

20.	A mixture of FeO and Fe3O4 when heated in air to constant weight gains 5% in its weight. The % of FeO in the sample is:
Answer» A mixture of $F e O$ and $F e_{3} O_{4}$ when heated in air to constant weight gains $5 %$ in its weight. The $%$ of $F e O$ in the sample is:

Discussion

21.	Convert phenol to benzamide
Answer» Convert phenol to benzamide

Discussion

22.	"Downward displacement of air" is a method of
Answer» "Downward displacement of air" is a method of

Discussion

23.	When a block of iron floats in mercury at 0∘C, a fraction k1 of its volume submerged, while at the temperature 60∘C, a fraction k2 is keen to be submerged the coefficient of volume expansion of iron of gFe and that of mercury is gHg, then the ratio k1k2 can be expressed as
Answer» When a block of iron floats in mercury at $0^{\circ} C$ , a fraction $k_{1}$ of its volume submerged, while at the temperature $60^{\circ} C$ , a fraction $k_{2}$ is keen to be submerged the coefficient of volume expansion of iron of $g_{F e}$ and that of mercury is $g_{H g}$ , then the ratio $\frac{k_{1}}{k_{2}}$ can be expressed as

Discussion

24.	For the process, H2O(s) → H2¬O(l) at 1 atm pressure and 270K, the value of ΔG is
Answer» For the process, $H_{2} O (s) \to H_{2} \neg O (l)$ at 1 atm pressure and 270K, the value of $Δ G$ is

Discussion

25.	Solubility product of a sulphide MS is 3 × 10−25 and that of another sulphide NS is 4 × 10−40. In ammonia solution
Answer» Solubility product of a sulphide MS is $3 \times 10^{- 25}$ and that of another sulphide NS is $4 \times 10^{- 40}$ . In ammonia solution

25.

Solubility product of a sulphide MS is 3 × 10−25 and that of another sulphide NS is 4 × 10−40. In ammonia solution

Answer»

Solubility product of a sulphide MS is $3 \times 10^{- 25}$ and that of another sulphide

NS is $4 \times 10^{- 40}$ . In ammonia solution

Discussion

26.	98.Why do oxygen and hydrogen molecules (O2 and H2) react to form water molecules even when the octet of these molecules is complete?
Answer» 98.Why do oxygen and hydrogen molecules (O2 and H2) react to form water molecules even when the octet of these molecules is complete?

Discussion

27.	18. The heating of phenyl methyl ether with HI produces- 1) iodobenzene 2) phenol 3) benzene 4) ethyl chloride
Answer» 18. The heating of phenyl methyl ether with HI produces- 1) iodobenzene 2) phenol 3) benzene 4) ethyl chloride

Discussion

28.	What is the correct order of 2nd ionisation energy?
Answer» What is the correct order of $2^{n d}$ ionisation energy?

Discussion

29.	X and Y are two compounds of elements A and Cl. The molar mass and the mass % of Cl are given in the table below. CompoundMolar mass% of ClX20071Y21350 X and Y are:
Answer» X and Y are two compounds of elements $A$ and $C l$ . The molar mass and the mass % of $C l$ are given in the table below. $\begin{matrix} Compound & Molar mass & % of Cl X & 200 & 71 Y & 213 & 50 \end{matrix}$ X and Y are:

Discussion

30.	Which of the following is a polyester fabric?
Answer» Which of the following is a polyester fabric?

Discussion

31.	Orthoboric acid behaves as weak monobasic acid in water giving H3O+ and
Answer» Orthoboric acid behaves as weak monobasic acid in water giving $H_{3} O^{+}$ and

Discussion

32.	An electron in unielectronic species A+x is present in nth orbit. The separation energy of that electron from nth orbit is 7.65 eV. The frequency of photon required to excite electron from nth orbit to (n + 2)th orbit is 1.025 × 1015 Hz. Mark the correct statement. a)The value of (n + 1) is 4 b) Element A is Beryllium c) Value of x is 2 d)Kinetic energy of electron in (n + 2) orbit is 1.51 eV
Answer» An electron in unielectronic species A+x is present in nth orbit. The separation energy of that electron from nth orbit is 7.65 eV. The frequency of photon required to excite electron from nth orbit to (n + 2)th orbit is 1.025 × 1015 Hz. Mark the correct statement. a)The value of (n + 1) is 4 b) Element A is Beryllium c) Value of x is 2 d)Kinetic energy of electron in (n + 2) orbit is 1.51 eV

Discussion

33.	A container has hydrogen and oxygen mixture in ratio of 4:1 by weight, then A. U of system increases B. U of system decreases C. S of mixture increases D. S of mixture decrease -------------------------------------------------------------- What should be the answer of this question according to you and why?
Answer» A container has hydrogen and oxygen mixture in ratio of 4:1 by weight, then A. U of system increases B. U of system decreases C. S of mixture increases D. S of mixture decrease -------------------------------------------------------------- What should be the answer of this question according to you and why?

Discussion

34.	43. In a crystalline solid,anions Y are arranged in ccp lattice and cations X are distributed in octahedral and tetrahedral voids.If all the octahedral voids are occupied, What is the formula of the solid?
Answer» 43. In a crystalline solid,anions Y are arranged in ccp lattice and cations X are distributed in octahedral and tetrahedral voids.If all the octahedral voids are occupied, What is the formula of the solid?

Discussion

35.	Which among the following radiations possess longest wavelength?
Answer» Which among the following radiations possess longest wavelength?

Discussion

36.	When sugar is dissolved in water, it disappears because the sugar particles _______________.
Answer» When sugar is dissolved in water, it disappears because the sugar particles _______________.

Discussion

37.	When KMnO4react with H2S in acidic medium than oxidation state of sulphur and magnese in the product will be respectively. 1.+4 +3 2.+4,+2 3.+6, +2 4.+2,+4
Answer» When KMnO4react with H2S in acidic medium than oxidation state of sulphur and magnese in the product will be respectively. 1.+4 +3 2.+4,+2 3.+6, +2 4.+2,+4

Discussion

38.	Whatis meant by positive and negative deviations from Raoult's law andhow is the sign of ΔsolHrelated to positive and negative deviations from Raoult's law?
Answer» What is meant by positive and negative deviations from Raoult's law and how is the sign of Δ_solH related to positive and negative deviations from Raoult's law?

Discussion

39.	Which of the following option is correct regarding given reaction?
Answer» Which of the following option is correct regarding given reaction?

Discussion

40.	CI+CI→CI2, this is an example for
Answer» $C I + C I \to C I_{2}$ , this is an example for

Discussion

41.	Consider the following list of reagents, acidified K2Cr2O7, alkaline KMnO4,CuSO4,H2O2,Cl2,O3,FeCl3,HNO3 and Na2S2O3. The total number of reagents that can oxidise aqueous iodide to iodine is:___
Answer» Consider the following list of reagents, acidified $K_{2} C r_{2} O_{7}$ , alkaline $K M n O_{4}, C u S O_{4}, H_{2} O_{2}, C l_{2}, O_{3}, F e C l_{3}, H N O_{3}$ and $N a_{2} S_{2} O_{3}$ . The total number of reagents that can oxidise aqueous iodide to iodine is:___

Discussion

42.	how are the R and S enantiomers related to d and l isomers in terms of optical activity?
Answer» how are the R and S enantiomers related to d and l isomers in terms of optical activity?

Discussion

43.	Why is sodium stored in kerosene?
Answer» Why is sodium stored in kerosene?

Discussion

44.	Avogadro number NA is changed fromx 1023 mol-1 to 6.022 x 1020 mol-1, this5 If\lbrack Re-AIPMT-2015\rbrack would changeThe ratio of chemical species to each other ina balanced equation13(2) The ratio of elements to each other in acompound(3) The definition of mass in units of grams(4) The mass of one mole of carbon
Answer» Avogadro number NA is changed fromx 1023 mol-1 to 6.022 x 1020 mol-1, this5 If\lbrack Re-AIPMT-2015\rbrack would changeThe ratio of chemical species to each other ina balanced equation13(2) The ratio of elements to each other in acompound(3) The definition of mass in units of grams(4) The mass of one mole of carbon

Discussion

45.	Which one of the following sets of quantum numbers represents an impossible arrangement?
Answer» Which one of the following sets of quantum numbers represents an impossible arrangement?

Discussion

46.	If it's the main property of bases to release OH- ions in aqueous solution, then why are non alkalis considered as bases if they are not soluble in water to ionize to form OH- ions ??
Answer» If it's the main property of bases to release OH- ions in aqueous solution, then why are non alkalis considered as bases if they are not soluble in water to ionize to form OH- ions ??

Discussion

47.	36. How many mole of lead(II) chloride will be formed from a reaction between 6.5g of PbO and 3.2g of HCl
Answer» 36. How many mole of lead(II) chloride will be formed from a reaction between 6.5g of PbO and 3.2g of HCl

Discussion

48.	In the sequence of following reactions:The starting compound ‘P’ is
Answer» In the sequence of following reactions: The starting compound ‘P’ is

48.

In the sequence of following reactions:The starting compound ‘P’ is

Answer»

In the sequence of following reactions:

The starting compound ‘P’ is

Discussion

49.	30 when nitrobenzene react with Na3AsO3 +NaOH 6[H] in presence of Glucose NaOH the product? when nitrobenzene react with Zn/NaOH 10[H] product?
Answer» 30 when nitrobenzene react with Na3AsO3 +NaOH 6[H] in presence of Glucose NaOH the product? when nitrobenzene react with Zn/NaOH 10[H] product?

Discussion

50.	32.Mechanism of Rosenmands reaction
Answer» 32.Mechanism of Rosenmands reaction

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

For the equilibrium SO2Cl2(g)⇌SO2(g)+Cl2(g); what is the temperature at which Kp (atm)Kc (M)=3?

find the fraction of work done by a gas and the heat supplied for an isobaric process, if amma is adiabatic component

50 1-cyano 4 nitro benzene is subject to nitration. What is the major product? 1. 1-cyano2,4 dinitrobenzene 2. 1-cyano3,4 dinitrobenzene 3. 1-cyano 6,4 dinitrobenzene 4. All of these

Explain electronic configuration of He and N according to Pauli and Hund's principle.

2. One gram of (94)Pu(239) is a alpha emmiter with a half life of 24400 years.given 1g sample of this plutonium how many alpha particles will emit per second

C_6H_5OCH_3\xrightarrow[{t-BuOH}]{Na/liq.NH_3

A non-volatile solute (urea) is dissolved in 100 g of water in order to decrease the vapour pressure of water by 25%. Which of the following option(s) is/are correct?Assume the solution to be non-dilute.

14. The reduction potential of hydrogen half cell will be negative if 1.p_{H_2}=1 atm and \lbrack H^+\rbrack=1 M 2.p_{H_2}=2 atm and\lbrack H^+\rbrack=2M 3.p_{H_2}=6 atm and\lbrack H^+\rbrack=3M 4.p_{H_2}=1 atm and\lbrack H^+\rbrack=2M

which of the following does not decolourise iodine?a)Na2SO3b)Na2S2O3C)NaCld)NaOH

Conductivityof 0.00241 M acetic acid is 7.896 × 10−5S cm−1.Calculate its molar conductivity and if foracetic acid is 390.5 S cm2mol−1,what is its dissociation constant?

The reagent with which both acetaldehyde and acetone react easily is :

11. Which of the following aryl amines undergo diazotisation most readily? 1) p-nitro aniline 2) p-chloro aniline 3) p-methoxy aniline 4) p-methyl aniline

On increasing pressure the coordination number of NaCl type structure changes from:

Question 5 (d)Draw the electron dot structure for F2.

19. Markovnikov's rule is not applicable in (1) 2-pentene (3) 1-butene (2) 1-pentene (4) 2-butene

Which of the following molecules has the least bond angle?

Mention the products formed when benzene sulphonyl chloride in aqueous naoh reacts withA. Aniline B. p-toulidine C. N ethyl aniline

Asolution is obtained by mixing 300 g of 25% solution and 400 g of 40%solution by mass. Calculate the mass percentage of the resultingsolution.

A mixture of FeO and Fe3O4 when heated in air to constant weight gains 5% in its weight. The % of FeO in the sample is:

Convert phenol to benzamide

"Downward displacement of air" is a method of

When a block of iron floats in mercury at 0∘C, a fraction k1 of its volume submerged, while at the temperature 60∘C, a fraction k2 is keen to be submerged the coefficient of volume expansion of iron of gFe and that of mercury is gHg, then the ratio k1k2 can be expressed as

For the process, H2O(s) → H2¬O(l) at 1 atm pressure and 270K, the value of ΔG is

Solubility product of a sulphide MS is 3 × 10−25 and that of another sulphide NS is 4 × 10−40. In ammonia solution

98.Why do oxygen and hydrogen molecules (O2 and H2) react to form water molecules even when the octet of these molecules is complete?

18. The heating of phenyl methyl ether with HI produces- 1) iodobenzene 2) phenol 3) benzene 4) ethyl chloride

What is the correct order of 2nd ionisation energy?

X and Y are two compounds of elements A and Cl. The molar mass and the mass % of Cl are given in the table below. CompoundMolar mass% of ClX20071Y21350 X and Y are:

Which of the following is a polyester fabric?

Orthoboric acid behaves as weak monobasic acid in water giving H3O+ and

43. In a crystalline solid,anions Y are arranged in ccp lattice and cations X are distributed in octahedral and tetrahedral voids.If all the octahedral voids are occupied, What is the formula of the solid?

Which among the following radiations possess longest wavelength?

When sugar is dissolved in water, it disappears because the sugar particles _______________.

When KMnO4react with H2S in acidic medium than oxidation state of sulphur and magnese in the product will be respectively. 1.+4 +3 2.+4,+2 3.+6, +2 4.+2,+4

Whatis meant by positive and negative deviations from Raoult's law andhow is the sign of ΔsolHrelated to positive and negative deviations from Raoult's law?

Which of the following option is correct regarding given reaction?

CI+CI→CI2, this is an example for

Consider the following list of reagents, acidified K2Cr2O7, alkaline KMnO4,CuSO4,H2O2,Cl2,O3,FeCl3,HNO3 and Na2S2O3. The total number of reagents that can oxidise aqueous iodide to iodine is:___

how are the R and S enantiomers related to d and l isomers in terms of optical activity?

Why is sodium stored in kerosene?

Which one of the following sets of quantum numbers represents an impossible arrangement?

If it's the main property of bases to release OH- ions in aqueous solution, then why are non alkalis considered as bases if they are not soluble in water to ionize to form OH- ions ??

36. How many mole of lead(II) chloride will be formed from a reaction between 6.5g of PbO and 3.2g of HCl

In the sequence of following reactions:The starting compound ‘P’ is

30 when nitrobenzene react with Na3AsO3 +NaOH 6[H] in presence of Glucose NaOH the product? when nitrobenzene react with Zn/NaOH 10[H] product?

32.Mechanism of Rosenmands reaction