46295 + Interview Questions in Chemistry

1.	why is the value of one mole only taken as 6.022 x 10^23why only the particle present in 12 gm of C-12
Answer» why is the value of one mole only taken as 6.022 x 10^23 why only the particle present in 12 gm of C-12

Discussion

2.	In the preparation of alkane, a conc. aqueous solution of sodium or potassium salts of saturated carboxylic acid is subjected to
Answer» In the preparation of alkane, a conc. aqueous solution of sodium or potassium salts of saturated carboxylic acid is subjected to

Discussion

3.	For zero order reaction relation between t 1 by 2 and t 1 by 4?
Answer» For zero order reaction relation between t 1 by 2 and t 1 by 4?

Discussion

4.	Ag2CrO4 and Ag2C2O4 both are present in a saturated solution in water .Ksp of Ag2CrO4 and Ag2C2O4 are 2x10ⁿ(where n =-12) and 2x10ⁿ(where n= -11) respectively, what is (Ag+) in solution?1)3.53x10-4. 2)3.53x10-2. 3)3.53x10-5. 4)3.53x10-3
Answer» Ag2CrO4 and Ag2C2O4 both are present in a saturated solution in water .Ksp of Ag2CrO4 and Ag2C2O4 are 2x10ⁿ(where n =-12) and 2x10ⁿ(where n= -11) respectively, what is (Ag+) in solution? 1)3.53x10-4. 2)3.53x10-2. 3)3.53x10-5. 4)3.53x10-3

Discussion

5.	Explain with structure the number of geometrical and optical isomers in type [MA2B4].
Answer» Explain with structure the number of geometrical and optical isomers in type [MA2B4].

Discussion

6.	If we take 2 mole of benzaldehyde and 1 mole of acetone and mixture is just treated with diluted NaOH followed by heating, the product formed is:
Answer» If we take $2$ mole of benzaldehyde and $1$ mole of acetone and mixture is just treated with diluted $N a O H$ followed by heating, the product formed is:

Discussion

7.	in which of the following compounds /ions every element have electronic configuration of most inert element ?1)H2;2)H3O+;3)CIF3;4)CL2O
Answer» in which of the following compounds /ions every element have electronic configuration of most inert element ?1)H2;2)H3O+;3)CIF3;4)CL2O

Discussion

8.	41. Lithium selenide can be described as a closest packed array of selenide ions with lithium ions in all the tetrahedral holes.Formula of lithium selenide is (1)Li2Se (2)LiSe (3)LiSe2 (4)Li3Se
Answer» 41. Lithium selenide can be described as a closest packed array of selenide ions with lithium ions in all the tetrahedral holes.Formula of lithium selenide is (1)Li2Se (2)LiSe (3)LiSe2 (4)Li3Se

Discussion

9.	In the below sequence of reactions A and B are which of the following ?(CH3)2CONaCN−−−−→HClAH3O+−−−→△B
Answer» In the below sequence of reactions A and B are which of the following ? $(C H_{3})_{2} C O N a C N - --- \to H C l A H_{3} O^{+} - -- \to △ B$

Discussion

10.	For H3PO3 and H3PO4 the correct choice is
Answer» For $H_{3} P O_{3}$ and $H_{3} P O_{4}$ the correct choice is

Discussion

11.	R-X can be reduced to R-H by Zn - Cu couple / C2H5OH as a result of:
Answer» R-X can be reduced to R-H by Zn - Cu couple / C₂H₅OH as a result of:

Discussion

12.	Lucas test is used to distinguish between:
Answer» Lucas test is used to distinguish between:

Discussion

13.	What will be the volume of 1 mole atom of hydrogen?
Answer» What will be the volume of 1 mole atom of hydrogen?

Discussion

14.	Which of the statement given below is incorrect: 1) ONF is isoelectronic with O2N- 2) OF2 is an oxide of flourine 3)Cl2O7 is anhydride of perchloric acid 4) O3 molecule is bent
Answer» Which of the statement given below is incorrect: 1) ONF is isoelectronic with O2N- 2) OF2 is an oxide of flourine 3)Cl2O7 is anhydride of perchloric acid 4) O3 molecule is bent

Discussion

15.	Q. For given half cell Al^{3+} + 3e^- → Al ; on increasing \lbrack Al^{3+}\rbrack, the electrode potential (a) Increases (b) Decreases (c) No change (d) First increases then decreases.
Answer» Q. For given half cell Al^{3+} + 3e^- → Al ; on increasing \lbrack Al^{3+}\rbrack, the electrode potential (a) Increases (b) Decreases (c) No change (d) First increases then decreases.

Discussion

16.	Which of the following is paramagnetic?
Answer» Which of the following is paramagnetic?

Discussion

17.	Double bond in Alkenes are detected by adding ? A, liquid Co2 B. liquid Br C. liquid chlorine D. Baeyer's reagant
Answer» Double bond in Alkenes are detected by adding ? A, liquid Co2 B. liquid Br C. liquid chlorine D. Baeyer's reagant

Discussion

18.	2X(g)+3Y(g)+Z(g)→P(g)+Q(g)The order of the given reaction is 34 and the experimental rate law of the given reaction is K[X]12[Y]34[Z]a. Find the order of reaction with respect to Z.
Answer» $2 X (g) + 3 Y (g) + Z (g) \to P (g) + Q (g)$ The order of the given reaction is $\frac{3}{4}$ and the experimental rate law of the given reaction is $K [X]^{\frac{1}{2}} [Y]^{\frac{3}{4}} [Z]^{a}$ . Find the order of reaction with respect to Z.

Discussion

19.	an alkyl halide on reaction with sodium in presense of ether gives 2,2,5,5- tetramethyl hexane the alkyl halide possibly i
Answer» an alkyl halide on reaction with sodium in presense of ether gives 2,2,5,5- tetramethyl hexane the alkyl halide possibly i

Discussion

20.	The most suitable reagent for the conversion of RCH2OH → RCHO is:
Answer» The most suitable reagent for the conversion of RCH₂OH → RCHO is:

Discussion

21.	The dipole moment is highest for which molecule? (1)CH3Cl (2)CCl4 (3)CHCl3 (4)CH2Cl2
Answer» The dipole moment is highest for which molecule? (1)CH3Cl (2)CCl4 (3)CHCl3 (4)CH2Cl2

Discussion

22.	Arrange the following complexes in the increasing order of conductivity of their solution [Co(NH3)3Cl3],[Co(NH3)4Cl2]Cl,[Co(NH3)6]Cl3,[Co(NH3)5Cl]Cl2
Answer» Arrange the following complexes in the increasing order of conductivity of their solution $[C o (N H_{3})_{3} C l_{3}], [C o (N H_{3})_{4} C l_{2}] C l, [C o (N H_{3})_{6}] C l_{3}, [C o (N H_{3})_{5} C l] C l_{2}$

Discussion

23.	Which of the following complexes has highest stability constant at 298 K ?
Answer» Which of the following complexes has highest stability constant at 298 K ?

Discussion

24.	13.Which behaves as a nucleophile and an electrophile both A)CH3NH2 B)CH3OH C)CH3CN D)CH3Cl And is (c) but I think (b) is also correct.
Answer» 13.Which behaves as a nucleophile and an electrophile both A)CH3NH2 B)CH3OH C)CH3CN D)CH3Cl And is (c) but I think (b) is also correct.

Discussion

25.	The correct expression of Kc for 2HI(g)⇌H2(g)+I2(g) is
Answer» The correct expression of $K_{c}$ for $2 H I (g) ⇌ H_{2} (g) + I_{2} (g)$ is

Discussion

26.	Structure of potassium ferrocyanide.3H2O. K4[Fe(CN)6].3H2O
Answer» Structure of potassium ferrocyanide.3H2O. K4[Fe(CN)6].3H2O

Discussion

27.	The general formula of silicate ion present cyclic silicates is:
Answer» The general formula of silicate ion present cyclic silicates is:

Discussion

28.	81 The correct expression inSI system relating the equivalent conductance (lambda c),specific conductance (k),and equivalent concentration (C) is (where C is number of gram equivalents in one litre of the solution)
Answer» 81 The correct expression inSI system relating the equivalent conductance (lambda c),specific conductance (k),and equivalent concentration (C) is (where C is number of gram equivalents in one litre of the solution)

Discussion

29.	What would be the final product of the reaction sequence given below?
Answer» What would be the final product of the reaction sequence given below?

Discussion

30.	Calculate Δr G for the reaction at 27∘CH2(g)+2Ag+(aq)⇌2Ag(s)+2H+(aq)Given : pH2 = 0.5 bar;[Ag+]=10−5M;log 2 =0.3 log 2= 0.7, [H+]=10−3M;ΔrG∘[Ag+(aq)]=77.1 kJ/mol
Answer» Calculate $Δ_{r}$ G for the reaction at $27^{\circ} C$ $H_{2} (g) + 2 A g^{+} (a q) ⇌ 2 A g (s) + 2 H^{+} (a q)$ Given : $p_{H_{2}}$ = $0.5 bar; [A g^{+}] = 10^{- 5} M; log 2 =0.3 log 2= 0.7$ , $[H^{+}] = 10^{- 3} M; Δ_{r} G^{\circ} [A g^{+} (a q)] = 77.1 kJ/mol$

Discussion

31.	NaBH4+I2→X+Y+Z BF3+NaH450K−−−→X+P BF3+LiAlH4→X+Q Identify X,Y,Z,P and Q.
Answer» $N a B H_{4} + I_{2} \to X + Y + Z$ $B F_{3} + N a H 450 K - -- \to X + P$ $B F_{3} + L i A l H_{4} \to X + Q$ Identify $X, Y, Z, P and Q .$

Discussion

32.	Asbestos [Ca Mg3O (Si4O11)] which is a type of amphibole has a general structure as:
Answer» Asbestos $[C a M g_{3} O (S i_{4} O_{11})]$ which is a type of amphibole has a general structure as:

Discussion

33.	Why reactivity increase on moving down in the group 1??
Answer» Why reactivity increase on moving down in the group 1??

Discussion

34.	AB and CD are 2 common tangets to circles which touch each other at C. If D lies on AB such that CD =4cm, then AB is equal to?
Answer» AB and CD are 2 common tangets to circles which touch each other at C. If D lies on AB such that CD =4cm, then AB is equal to?

Discussion

35.	NH3gas adsorbs more readily than N2gas reason out
Answer» NH3gas adsorbs more readily than N2gas reason out

Discussion

36.	A transistor is connected in common-emitter (C.E) configuration. The collector supply is 8 V and the voltage drop across a resistor of 800 Ω in the collector circuit is 0.5 V.. If the current gain factor (α) is 0.96. The base-current is (20+n) μA. The value of n is.(integer only)
Answer» A transistor is connected in common-emitter $(C.E)$ configuration. The collector supply is $8 V$ and the voltage drop across a resistor of $800 Ω$ in the collector circuit is $0.5 V .$ . If the current gain factor $(α)$ is $0.96.$ The base-current is $(20 + n) μ A$ . The value of $n$ is.(integer only)

Discussion

37.	Which of the following is true for an isothermal process?
Answer» Which of the following is true for an isothermal process?

Discussion

38.	Explain the stability order of conjugated isolated and cumulated diene
Answer» Explain the stability order of conjugated isolated and cumulated diene

Discussion

39.	For the followingequilibrium, Boththe forward and reverse reactions in the equilibrium are elementarybimolecular reactions. What is Kc,for the reverse reaction?
Answer» For the following equilibrium, Both the forward and reverse reactions in the equilibrium are elementary bimolecular reactions. What is K_c, for the reverse reaction?

39.

For the followingequilibrium, Boththe forward and reverse reactions in the equilibrium are elementarybimolecular reactions. What is Kc,for the reverse reaction?

Answer»

For the following
equilibrium,

Both
the forward and reverse reactions in the equilibrium are elementary
bimolecular reactions. What is K_c,
for the reverse reaction?

Discussion

40.	alongnd Field StrengthWhich of the following arrangements of charge is possiblefioP, Q, R, S, T and U respectively?(2004, 1Min threeane electric014 Adv.)Ttr electric fiAiadependery pr4. An electron of mass m, initially at rest, moves through actly prt,-t, t,
Answer» alongnd Field StrengthWhich of the following arrangements of charge is possiblefioP, Q, R, S, T and U respectively?(2004, 1Min threeane electric014 Adv.)Ttr electric fiAiadependery pr4. An electron of mass m, initially at rest, moves through actly prt,-t, t,

Discussion

41.	11. A gas is allowed to expand from a volume of 5l to 10l at a pressure of 1 atmosphere. During the process 20 joule of heat is evolved. Calculate delta E for the process in joules ?
Answer» 11. A gas is allowed to expand from a volume of 5l to 10l at a pressure of 1 atmosphere. During the process 20 joule of heat is evolved. Calculate delta E for the process in joules ?

Discussion

42.	ice pieces floating in a beaker A containing water and also in beaker B containing miscibe liquid of specific gravity 1.2.when ice melts the level of
Answer» ice pieces floating in a beaker A containing water and also in beaker B containing miscibe liquid of specific gravity 1.2.when ice melts the level of

Discussion

43.	The correct order of reactivity of alkalimetals towards H2 is
Answer» The correct order of reactivity of alkalimetals towards $H_{2}$ is

Discussion

44.	Thesolubility product constant of Ag2CrO4and AgBr are 1.1 × 10–12and5.0× 10–13respectively. Calculate the ratio of the molarities of theirsaturated solutions.
Answer» The solubility product constant of Ag₂CrO₄ and AgBr are 1.1 × 10^–12 and 5.0 × 10^–13 respectively. Calculate the ratio of the molarities of their saturated solutions.

44.

Thesolubility product constant of Ag2CrO4and AgBr are 1.1 × 10–12and5.0× 10–13respectively. Calculate the ratio of the molarities of theirsaturated solutions.

Answer»

The
solubility product constant of Ag₂CrO₄
and AgBr are 1.1 × 10^–12
and

5.0
× 10^–13
respectively. Calculate the ratio of the molarities of their
saturated solutions.

Discussion

45.	For the reaction:2A→14BRate of disappearance of ‘A’ related to the rate of appearance of ‘B’ by the expression:
Answer» For the reaction: $2 A \to \frac{1}{4} B$ Rate of disappearance of ‘A’ related to the rate of appearance of ‘B’ by the expression:

Discussion

46.	Why the carben chain has zigzag line or zigzag structure
Answer» Why the carben chain has zigzag line or zigzag structure

Discussion

47.	The ratio between hydrogen bonds and phosphodiester bonds broke in each palindromic sequence of a dna when treated with E cori during formation of cohesive bonds
Answer» The ratio between hydrogen bonds and phosphodiester bonds broke in each palindromic sequence of a dna when treated with E cori during formation of cohesive bonds

Discussion

48.	If the compressibility factor of H2 is 1.8, then the volume of one mole of real H2 at STP will be:
Answer» If the compressibility factor of $H_{2}$ is $1.8$ , then the volume of one mole of real $H_{2}$ at STP will be:

Discussion

49.	Given the standard electrode potentials,K /K = -2.93V, Ag /Ag = 0.80V.2+Hg /Hg = 0.79V2+Mg /Mg =3+-2.37V. Cr /Cr= -0.74Varrange these metals in their increasing order of reducing power.
Answer» Given the standard electrode potentials,K /K = -2.93V, Ag /Ag = 0.80V.2+Hg /Hg = 0.79V2+Mg /Mg =3+-2.37V. Cr /Cr= -0.74Varrange these metals in their increasing order of reducing power.

Discussion

50.	37. In which of the following reactions gas is released: CuSO4 + Zn HCl + Zn CuSO4 + Fe NaOH + Al
Answer» 37. In which of the following reactions gas is released: CuSO4 + Zn HCl + Zn CuSO4 + Fe NaOH + Al

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

why is the value of one mole only taken as 6.022 x 10^23why only the particle present in 12 gm of C-12

In the preparation of alkane, a conc. aqueous solution of sodium or potassium salts of saturated carboxylic acid is subjected to

For zero order reaction relation between t 1 by 2 and t 1 by 4?

Ag2CrO4 and Ag2C2O4 both are present in a saturated solution in water .Ksp of Ag2CrO4 and Ag2C2O4 are 2x10ⁿ(where n =-12) and 2x10ⁿ(where n= -11) respectively, what is (Ag+) in solution?1)3.53x10-4. 2)3.53x10-2. 3)3.53x10-5. 4)3.53x10-3

Explain with structure the number of geometrical and optical isomers in type [MA2B4].

If we take 2 mole of benzaldehyde and 1 mole of acetone and mixture is just treated with diluted NaOH followed by heating, the product formed is:

in which of the following compounds /ions every element have electronic configuration of most inert element ?1)H2;2)H3O+;3)CIF3;4)CL2O

41. Lithium selenide can be described as a closest packed array of selenide ions with lithium ions in all the tetrahedral holes.Formula of lithium selenide is (1)Li2Se (2)LiSe (3)LiSe2 (4)Li3Se

In the below sequence of reactions A and B are which of the following ?(CH3)2CONaCN−−−−→HClAH3O+−−−→△B

For H3PO3 and H3PO4 the correct choice is

R-X can be reduced to R-H by Zn - Cu couple / C2H5OH as a result of:

Lucas test is used to distinguish between:

What will be the volume of 1 mole atom of hydrogen?

Which of the statement given below is incorrect: 1) ONF is isoelectronic with O2N- 2) OF2 is an oxide of flourine 3)Cl2O7 is anhydride of perchloric acid 4) O3 molecule is bent

Q. For given half cell Al^{3+} + 3e^- → Al ; on increasing \lbrack Al^{3+}\rbrack, the electrode potential (a) Increases (b) Decreases (c) No change (d) First increases then decreases.

Which of the following is paramagnetic?

Double bond in Alkenes are detected by adding ? A, liquid Co2 B. liquid Br C. liquid chlorine D. Baeyer's reagant

2X(g)+3Y(g)+Z(g)→P(g)+Q(g)The order of the given reaction is 34 and the experimental rate law of the given reaction is K[X]12[Y]34[Z]a. Find the order of reaction with respect to Z.

an alkyl halide on reaction with sodium in presense of ether gives 2,2,5,5- tetramethyl hexane the alkyl halide possibly i

The most suitable reagent for the conversion of RCH2OH → RCHO is:

The dipole moment is highest for which molecule? (1)CH3Cl (2)CCl4 (3)CHCl3 (4)CH2Cl2

Arrange the following complexes in the increasing order of conductivity of their solution [Co(NH3)3Cl3],[Co(NH3)4Cl2]Cl,[Co(NH3)6]Cl3,[Co(NH3)5Cl]Cl2

Which of the following complexes has highest stability constant at 298 K ?

13.Which behaves as a nucleophile and an electrophile both A)CH3NH2 B)CH3OH C)CH3CN D)CH3Cl And is (c) but I think (b) is also correct.

The correct expression of Kc for 2HI(g)⇌H2(g)+I2(g) is

Structure of potassium ferrocyanide.3H2O. K4[Fe(CN)6].3H2O

The general formula of silicate ion present cyclic silicates is:

81 The correct expression inSI system relating the equivalent conductance (lambda c),specific conductance (k),and equivalent concentration (C) is (where C is number of gram equivalents in one litre of the solution)

What would be the final product of the reaction sequence given below?

Calculate Δr G for the reaction at 27∘CH2(g)+2Ag+(aq)⇌2Ag(s)+2H+(aq)Given : pH2 = 0.5 bar;[Ag+]=10−5M;log 2 =0.3 log 2= 0.7, [H+]=10−3M;ΔrG∘[Ag+(aq)]=77.1 kJ/mol

NaBH4+I2→X+Y+Z BF3+NaH450K−−−→X+P BF3+LiAlH4→X+Q Identify X,Y,Z,P and Q.

Asbestos [Ca Mg3O (Si4O11)] which is a type of amphibole has a general structure as:

Why reactivity increase on moving down in the group 1??

AB and CD are 2 common tangets to circles which touch each other at C. If D lies on AB such that CD =4cm, then AB is equal to?

NH3gas adsorbs more readily than N2gas reason out

A transistor is connected in common-emitter (C.E) configuration. The collector supply is 8 V and the voltage drop across a resistor of 800 Ω in the collector circuit is 0.5 V.. If the current gain factor (α) is 0.96. The base-current is (20+n) μA. The value of n is.(integer only)

Which of the following is true for an isothermal process?

Explain the stability order of conjugated isolated and cumulated diene

For the followingequilibrium, Boththe forward and reverse reactions in the equilibrium are elementarybimolecular reactions. What is Kc,for the reverse reaction?

alongnd Field StrengthWhich of the following arrangements of charge is possiblefioP, Q, R, S, T and U respectively?(2004, 1Min threeane electric014 Adv.)Ttr electric fiAiadependery pr4. An electron of mass m, initially at rest, moves through actly prt,-t, t,

11. A gas is allowed to expand from a volume of 5l to 10l at a pressure of 1 atmosphere. During the process 20 joule of heat is evolved. Calculate delta E for the process in joules ?

ice pieces floating in a beaker A containing water and also in beaker B containing miscibe liquid of specific gravity 1.2.when ice melts the level of

The correct order of reactivity of alkalimetals towards H2 is

Thesolubility product constant of Ag2CrO4and AgBr are 1.1 × 10–12and5.0× 10–13respectively. Calculate the ratio of the molarities of theirsaturated solutions.

For the reaction:2A→14BRate of disappearance of ‘A’ related to the rate of appearance of ‘B’ by the expression:

Why the carben chain has zigzag line or zigzag structure

The ratio between hydrogen bonds and phosphodiester bonds broke in each palindromic sequence of a dna when treated with E cori during formation of cohesive bonds

If the compressibility factor of H2 is 1.8, then the volume of one mole of real H2 at STP will be:

Given the standard electrode potentials,K /K = -2.93V, Ag /Ag = 0.80V.2+Hg /Hg = 0.79V2+Mg /Mg =3+-2.37V. Cr /Cr= -0.74Varrange these metals in their increasing order of reducing power.

37. In which of the following reactions gas is released: CuSO4 + Zn HCl + Zn CuSO4 + Fe NaOH + Al