46295 + Interview Questions in Chemistry

1.	Maximum number of compounds are known in the case of which inert gas?
Answer» Maximum number of compounds are known in the case of which inert gas?

Discussion

2.	The correct structure of 3-Methylpenta-1,3-diene is
Answer» The correct structure of 3-Methylpenta-1,3-diene is

Discussion

3.	How is phenol used as a disinfectant?
Answer» How is phenol used as a disinfectant?

Discussion

4.	Difference b/w Stereo selective and Stereospecific
Answer» Difference b/w Stereo selective and Stereospecific

Discussion

5.	explain spleen from basic to the most detailed?
Answer» explain spleen from basic to the most detailed?

Discussion

6.	How can we write CO +1/2 O2 ---> CO2
Answer» How can we write CO +1/2 O2 ---> CO2

6.

How can we write CO +1/2 O2 ---> CO2

Answer»

How can we write

CO +1/2 O2 ---> CO2

Discussion

7.	In Nitro functional group, -NO2, how do N and O react to leave behind a single bond?
Answer» In Nitro functional group, -NO2, how do N and O react to leave behind a single bond?

Discussion

8.	20. During electrolysis of aq. CuSO4 solutions using Pt electrodes, identify correct statement 1) pH increases with time 2) pH decreases with time
Answer» 20. During electrolysis of aq. CuSO4 solutions using Pt electrodes, identify correct statement 1) pH increases with time 2) pH decreases with time

Discussion

9.	Which is the correct representation of the solubility product constant of Ag2CrO4.
Answer» Which is the correct representation of the solubility product constant of $A g_{2} C r O_{4}$ .

Discussion

10.	Which of the following have no unit? (a) Electronegativity (b) Electron gain enthalpy (c) Ionlsation enthalpy (d) Metallic character
Answer» Which of the following have no unit? (a) Electronegativity (b) Electron gain enthalpy (c) Ionlsation enthalpy (d) Metallic character

Discussion

11.	The energy required to remove an electron of a gaseous atom from its ground state is called
Answer» The energy required to remove an electron of a gaseous atom from its ground state is called

11.

The energy required to remove an electron of a gaseous atom from its ground state is called

Answer»

The energy required to remove an electron of a gaseous atom from its ground state is called

Discussion

12.	What is the difference between sigma and sigma star, and pi and pi star
Answer» What is the difference between sigma and sigma star, and pi and pi star

Discussion

13.	Zn(s)+2H+(aq)→Zn2+(aq)+H2(g)The above equation has an equilibrium constant Keq=1025. What is the value of standard EMF for the reaction. (Given : 2.303RTF=0.0591 V)
Answer» $Z n (s) + 2 H^{+} (a q) \to Z n^{2 +} (a q) + H_{2} (g)$ The above equation has an equilibrium constant $K_{e q} = 10^{25}$ . What is the value of standard EMF for the reaction. (Given : $2.303 \frac{R T}{F} = 0.0591 V$ )

Discussion

14.	Indicate the compound having the highest rate of reaction with AgNO3.
Answer» Indicate the compound having the highest rate of reaction with $A g N O_{3}$ .

Discussion

15.	The heat of neutralisation is maximum when
Answer» The heat of neutralisation is maximum when

Discussion

16.	A compound X of formula C3H8OH yields a compound C3H6O, on oxidation. To which of the following classes of compounds could X being [Pb. PMT 2000]
Answer» A compound X of formula C₃H₈OH yields a compound C₃H₆O, on oxidation. To which of the following classes of compounds could X being [Pb. PMT 2000]

16.

A compound X of formula C3H8OH yields a compound C3H6O, on oxidation. To which of the following classes of compounds could X being [Pb. PMT 2000]

Answer»

A compound X of formula C₃H₈OH yields a compound C₃H₆O, on oxidation. To which of the following classes

of compounds could X being [Pb. PMT 2000]

Discussion

17.	What is the polar form of x and y and describe modulus and argument.
Answer» What is the polar form of x and y and describe modulus and argument.

Discussion

18.	A sp3 hybridized orbital contains
Answer» A $s p^{3}$ hybridized orbital contains

Discussion

19.	Which is the correct order of ionisation energies?A F– > F > Cl– > Cl B F > Cl > Cl– > F- C F– > Cl– > Cl > f-D F– > Cl– > F > Cl
Answer» Which is the correct order of ionisation energies? A F– > F > Cl– > Cl B F > Cl > Cl– > F- C F– > Cl– > Cl > f- D F– > Cl– > F > Cl

Discussion

20.	Glucose in water is 10%w/w Find m Find mole fraction of glucose Find molarity of the solution of the density of the solution is 1.2g/ml
Answer» Glucose in water is 10%w/w Find m Find mole fraction of glucose Find molarity of the solution of the density of the solution is 1.2g/ml

20.

Glucose in water is 10%w/w Find m Find mole fraction of glucose Find molarity of the solution of the density of the solution is 1.2g/ml

Answer»

Glucose in water is 10%w/w

Find m

Find mole fraction of glucose

Find molarity of the solution of the density of the solution is 1.2g/ml

Discussion

21.	what is a complete cycle and half cycle
Answer» what is a complete cycle and half cycle

Discussion

22.	4. Oxo synthesis reaction mechanism
Answer» 4. Oxo synthesis reaction mechanism

Discussion

23.	30. Why NH3 is sp3 hybridized eventhough it has only 3 hydrogen atom to pair with .
Answer» 30. Why NH3 is sp3 hybridized eventhough it has only 3 hydrogen atom to pair with .

Discussion

24.	Calculate the molarities and normalities of the solutions obtained on mixing 100mL of 0.1M H2SO4 with 50mL of 0.1 M NaOH.
Answer» Calculate the molarities and normalities of the solutions obtained on mixing 100mL of 0.1M H2SO4 with 50mL of 0.1 M NaOH.

Discussion

25.	5. The number of isomeric alkenes possible for C5H10 are
Answer» 5. The number of isomeric alkenes possible for C5H10 are

Discussion

26.	Some statements about isomerism are given (I) n - propyl amine and isopropyl amine are position isomers (II)n - butyl amine, isobutyl amine are chain isomers (III)n - propyl amine and tri methyl amine are functional isomers (IV)di ethyl amine and n - propyl methyl amine are metamers The correct statements are
Answer» Some statements about isomerism are given (I) n - propyl amine and isopropyl amine are position isomers (II)n - butyl amine, isobutyl amine are chain isomers (III)n - propyl amine and tri methyl amine are functional isomers (IV)di ethyl amine and n - propyl methyl amine are metamers The correct statements are

26.

Some statements about isomerism are given (I) n - propyl amine and isopropyl amine are position isomers (II)n - butyl amine, isobutyl amine are chain isomers (III)n - propyl amine and tri methyl amine are functional isomers (IV)di ethyl amine and n - propyl methyl amine are metamers The correct statements are

Answer»

Some statements about isomerism are given

(I) n - propyl amine and isopropyl amine are position isomers

(II)n - butyl amine, isobutyl amine are chain isomers

(III)n - propyl amine and tri methyl amine are functional isomers

(IV)di ethyl amine and n - propyl methyl amine are metamers The correct statements are

Discussion

27.	why a p type semiconductor crystal is electrically neutral although number of holes is more than that of number of electrons??
Answer» why a p type semiconductor crystal is electrically neutral although number of holes is more than that of number of electrons??

Discussion

28.	How many electrons should be added to the reactant to balance the atom whose oxidation number is changing? Cr2O2−7⟶Cr+36
Answer» How many electrons should be added to the reactant to balance the atom whose oxidation number is changing? $C r_{2} O_{7}^{2 -}$ $⟶$ $C r^{+ 3}$ 6

28.

How many electrons should be added to the reactant to balance the atom whose oxidation number is changing? Cr2O2−7⟶Cr+36

Answer»

How many electrons should be added to the reactant to balance the atom whose oxidation number is changing?

$C r_{2} O_{7}^{2 -}$ $⟶$ $C r^{+ 3}$

6

Discussion

29.	For diatomic molecule the dipole moment is 1.2D and bond length is 1×10^{-10}m then charge fraction on each atom is 1)12% 2)18% 3)25% 4)29
Answer» For diatomic molecule the dipole moment is 1.2D and bond length is 1×10^{-10}m then charge fraction on each atom is 1)12% 2)18% 3)25% 4)29

Discussion

30.	The major product formed when excess of HCl reacts with 2-Butyne?
Answer» The major product formed when excess of $H C l$ reacts with 2-Butyne?

Discussion

31.	22. What is the equivalent mass of boric acid?
Answer» 22. What is the equivalent mass of boric acid?

Discussion

32.	Out of C and CO, whichis a better reducing agent at 673 K?
Answer» Out of C and CO, which is a better reducing agent at 673 K?

Discussion

33.	In the following reaction order, B is CH3CH2COOHRed P−−−→Br2AAlc.KOH−−−−−−→H+B
Answer» In the following reaction order, B is $C H_{3} C H_{2} C O O H R e d P - -- \to B r_{2} A A l c . K O H - ----- \to H^{+} B$

Discussion

34.	Mass of 1 amu in gram is ?
Answer» Mass of 1 amu in gram is ?

Discussion

35.	The oxidation number of oxygen in O2PtF6 is
Answer» The oxidation number of oxygen in $O_{2} P t F_{6}$ is

Discussion

36.	Why is BiH3 the strongest reducing agent amongst all the hydrides of Group 15 elements?
Answer» Why is BiH₃ the strongest reducing agent amongst all the hydrides of Group 15 elements?

36.

Why is BiH3 the strongest reducing agent amongst all the hydrides of Group 15 elements?

Answer»

Why
is BiH₃
the strongest reducing agent amongst all the hydrides of

Group 15
elements?

Discussion

37.	The sum of the number of lone pairs of electrons present on each central atom in the following species is [TeBr6]2−, [BrF2]+, SNF3 and [XeF3]− (Atomic numbers: N=7, F=9, S=16, Br=35, Te=52, Xe=54)
Answer» The sum of the number of lone pairs of electrons present on each central atom in the following species is $[T e B r_{6}]^{2 -}, [B r F_{2}]^{+}, S N F_{3}$ and $[X e F_{3}]^{-}$ (Atomic numbers: $N = 7, F = 9, S = 16, B r = 35, T e = 52, X e = 54$ )

Discussion

38.	Which of the following statements are correct about stability of chelates–(A) As the number of rings in complex increases, stability of chelate also increases(B) A chelate having five membered ring is more stable if it contains double bonds.(C) A chelate having six membered ring is more stable than if it does not contain double bonds.(D) Chelating ligands are at least bidentate ligands.
Answer» Which of the following statements are correct about stability of chelates– (A) As the number of rings in complex increases, stability of chelate also increases (B) A chelate having five membered ring is more stable if it contains double bonds. (C) A chelate having six membered ring is more stable than if it does not contain double bonds. (D) Chelating ligands are at least bidentate ligands.

Discussion

39.	Dihydrogen gas is obtained from natural gas by partial oxidation with steam as per following endothermic reaction:(a) Write as expression for Kp for the above reaction.(b) How will the values of Kp and composition of equilibrium mixture be affected by(i) Increasing the pressure(ii) Increasing the temperature(iii) Using a catalyst?
Answer» Dihydrogen gas is obtained from natural gas by partial oxidation with steam as per following endothermic reaction: (a) Write as expression for K_p for the above reaction. (b) How will the values of K_p and composition of equilibrium mixture be affected by (i) Increasing the pressure (ii) Increasing the temperature (iii) Using a catalyst?

39.

Dihydrogen gas is obtained from natural gas by partial oxidation with steam as per following endothermic reaction:(a) Write as expression for Kp for the above reaction.(b) How will the values of Kp and composition of equilibrium mixture be affected by(i) Increasing the pressure(ii) Increasing the temperature(iii) Using a catalyst?

Answer»

Dihydrogen gas is obtained from natural gas by partial oxidation with steam as per following endothermic reaction:

(a) Write as expression for K_p for the above reaction.

(b) How will the values of K_p and composition of equilibrium mixture be affected by

(i) Increasing the pressure

(ii) Increasing the temperature

(iii) Using a catalyst?

Discussion

40.	Uncertainity in position of a hypothetical subatomic particle is 1Å and uncertainty in velocity is 3.34π × 105 m/s then the mass of the particle is approximately [h = 6.6 × 10−34 Js]
Answer» Uncertainity in position of a hypothetical subatomic particle is $1 Å$ and uncertainty in velocity is $\frac{3.3}{4 π} \times 10^{5} m / s$ then the mass of the particle is approximately $[h = 6.6 \times 10^{- 34} J s]$

Discussion

41.	At 80∘C the vapour pressure of pure liquid 'A' is 520 mm Hg and that of pure liq 'B' is 1000 mm Hg. If mixture of both liquids from ideal solution and boils at 80∘C and 1 atm pressure, the mole fraction of 'A' in the liquid mixture is:
Answer» At $80^{\circ} C$ the vapour pressure of pure liquid 'A' is 520 mm Hg and that of pure liq 'B' is 1000 mm Hg. If mixture of both liquids from ideal solution and boils at $80^{\circ} C$ and 1 atm pressure, the mole fraction of 'A' in the liquid mixture is:

Discussion

42.	The equilibrium constant for the reaction A2+B2⇌2AB is 20 at 500 K .The equilibrium constant for the reaction 2AB(g)⇌A2(g)+B2(g) would be
Answer» The equilibrium constant for the reaction $A_{2} + B_{2} ⇌ 2 A B$ is 20 at 500 K .The equilibrium constant for the reaction $2 A B_{(g)} ⇌ A_{2 (g)} + B_{2 (g)}$ would be

Discussion

43.	The equilibrium expression, K = [CO2] represents the reaction:
Answer» The equilibrium expression, K = [CO₂] represents the reaction:

Discussion

44.	one mole of ideal monoatomic gas undergoes a process described by the equatipn pv^{3 }=cons†an t the heat capacity of the gas during this process is
Answer» one mole of ideal monoatomic gas undergoes a process described by the equatipn pv^{3 }=cons†an t the heat capacity of the gas during this process is

Discussion

45.	The size of species I, I⊕ and I⊖ decreases in the order
Answer» The size of species $I$ , $I^{\oplus}$ and $I^{⊖}$ decreases in the order

Discussion

46.	Ores with iron impurities are mixed with silica before heating to remove it as
Answer» Ores with iron impurities are mixed with silica before heating to remove it as

Discussion

47.	Why in some element whose coordination no is 6 and ligand is NH3 hybridization is d2sp3 and sometimes sp3d2
Answer» Why in some element whose coordination no is 6 and ligand is NH3 hybridization is d2sp3 and sometimes sp3d2

Discussion

48.	The pressure exerted by a mixture of 3.5 g of N2 and 4g of H2 contained in a 8.21 dm−3 flask at 27°C is(1) 5.925 atm(2) 6.375 atm(3) 8.217 atm(4) 3.291 atm
Answer» The pressure exerted by a mixture of 3.5 g of N₂ and 4g of H₂ contained in a 8.21 dm−3 flask at 27°C is (1) 5.925 atm (2) 6.375 atm (3) 8.217 atm (4) 3.291 atm

48.

The pressure exerted by a mixture of 3.5 g of N2 and 4g of H2 contained in a 8.21 dm−3 flask at 27°C is(1) 5.925 atm(2) 6.375 atm(3) 8.217 atm(4) 3.291 atm

Answer»

The pressure exerted by a mixture of 3.5 g of N₂ and 4g of H₂ contained in a 8.21 dm−3 flask at 27°C is

(1) 5.925 atm

(2) 6.375 atm

(3) 8.217 atm

(4) 3.291 atm

Discussion

49.	Amongst the following statements, which is/are correct?
Answer» Amongst the following statements, which is/are correct?

Discussion

50.	How does the polarity of C-O bond increases with increase in alkyl geoups attached to the Carbon atom containing OH group?
Answer» How does the polarity of C-O bond increases with increase in alkyl geoups attached to the Carbon atom containing OH group?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Maximum number of compounds are known in the case of which inert gas?

The correct structure of 3-Methylpenta-1,3-diene is

How is phenol used as a disinfectant?

Difference b/w Stereo selective and Stereospecific

explain spleen from basic to the most detailed?

How can we write CO +1/2 O2 ---&gt; CO2

In Nitro functional group, -NO2, how do N and O react to leave behind a single bond?

20. During electrolysis of aq. CuSO4 solutions using Pt electrodes, identify correct statement 1) pH increases with time 2) pH decreases with time

Which is the correct representation of the solubility product constant of Ag2CrO4.

Which of the following have no unit? (a) Electronegativity (b) Electron gain enthalpy (c) Ionlsation enthalpy (d) Metallic character

The energy required to remove an electron of a gaseous atom from its ground state is called

What is the difference between sigma and sigma star, and pi and pi star

Zn(s)+2H+(aq)→Zn2+(aq)+H2(g)The above equation has an equilibrium constant Keq=1025. What is the value of standard EMF for the reaction. (Given : 2.303RTF=0.0591 V)

Indicate the compound having the highest rate of reaction with AgNO3.

The heat of neutralisation is maximum when

A compound X of formula C3H8OH yields a compound C3H6O, on oxidation. To which of the following classes of compounds could X being [Pb. PMT 2000]

What is the polar form of x and y and describe modulus and argument.

A sp3 hybridized orbital contains

Which is the correct order of ionisation energies?A F– > F > Cl– > Cl B F > Cl > Cl– > F- C F– > Cl– > Cl > f-D F– > Cl– > F > Cl

Glucose in water is 10%w/w Find m Find mole fraction of glucose Find molarity of the solution of the density of the solution is 1.2g/ml

what is a complete cycle and half cycle

4. Oxo synthesis reaction mechanism

30. Why NH3 is sp3 hybridized eventhough it has only 3 hydrogen atom to pair with .

Calculate the molarities and normalities of the solutions obtained on mixing 100mL of 0.1M H2SO4 with 50mL of 0.1 M NaOH.

5. The number of isomeric alkenes possible for C5H10 are

why a p type semiconductor crystal is electrically neutral although number of holes is more than that of number of electrons??

How many electrons should be added to the reactant to balance the atom whose oxidation number is changing? Cr2O2−7⟶Cr+36

For diatomic molecule the dipole moment is 1.2D and bond length is 1×10^{-10}m then charge fraction on each atom is 1)12% 2)18% 3)25% 4)29

The major product formed when excess of HCl reacts with 2-Butyne?

22. What is the equivalent mass of boric acid?

Out of C and CO, whichis a better reducing agent at 673 K?

In the following reaction order, B is CH3CH2COOHRed P−−−→Br2AAlc.KOH−−−−−−→H+B

Mass of 1 amu in gram is ?

The oxidation number of oxygen in O2PtF6 is

Why is BiH3 the strongest reducing agent amongst all the hydrides of Group 15 elements?

The sum of the number of lone pairs of electrons present on each central atom in the following species is [TeBr6]2−, [BrF2]+, SNF3 and [XeF3]− (Atomic numbers: N=7, F=9, S=16, Br=35, Te=52, Xe=54)

Uncertainity in position of a hypothetical subatomic particle is 1Å and uncertainty in velocity is 3.34π × 105 m/s then the mass of the particle is approximately [h = 6.6 × 10−34 Js]

At 80∘C the vapour pressure of pure liquid 'A' is 520 mm Hg and that of pure liq 'B' is 1000 mm Hg. If mixture of both liquids from ideal solution and boils at 80∘C and 1 atm pressure, the mole fraction of 'A' in the liquid mixture is:

The equilibrium constant for the reaction A2+B2⇌2AB is 20 at 500 K .The equilibrium constant for the reaction 2AB(g)⇌A2(g)+B2(g) would be

The equilibrium expression, K = [CO2] represents the reaction:

one mole of ideal monoatomic gas undergoes a process described by the equatipn pv^{3 }=cons†an t the heat capacity of the gas during this process is

The size of species I, I⊕ and I⊖ decreases in the order

Ores with iron impurities are mixed with silica before heating to remove it as

Why in some element whose coordination no is 6 and ligand is NH3 hybridization is d2sp3 and sometimes sp3d2

The pressure exerted by a mixture of 3.5 g of N2 and 4g of H2 contained in a 8.21 dm−3 flask at 27°C is(1) 5.925 atm(2) 6.375 atm(3) 8.217 atm(4) 3.291 atm

Amongst the following statements, which is/are correct?

How does the polarity of C-O bond increases with increase in alkyl geoups attached to the Carbon atom containing OH group?

How can we write CO +1/2 O2 ---> CO2