46295 + Interview Questions in Chemistry

1.	What are the characteristics of isomers state any ten characteristics?
Answer» What are the characteristics of isomers state any ten characteristics?

Discussion

2.	Which of the following compounds are formed by the oxidation of 3 – methyl butane 1, 2, 3 – triol with HIO4
Answer» Which of the following compounds are formed by the oxidation of 3 – methyl butane 1, 2, 3 – triol with $H I O_{4}$

Discussion

3.	43 H-C=--H(ethylene) + naoh = H-C=-CNa + h2o For the above reaction the K equilibrium is A. K>1 B. K
Answer» 43 H-C=--H(ethylene) + naoh = H-C=-CNa + h2o For the above reaction the K equilibrium is A. K>1 B. K<1 C. K=1 D. K=0

Discussion

4.	Among the triatomic melecules/ions, BeCl2, N−3, N2O, NO+2, O3, SCl2, ICl−2, I−3 and XeF2, the total number of linear molecules(s)/ion(s) where the hybrization of the central atom does not have contribution from the d-orbital(s) is [Atomic number : S=16,Cl=17,I=53 and Xe=54]
Answer» Among the triatomic melecules/ions, $B e C l_{2}, N_{3}^{-}, N_{2} O, N O_{2}^{+}, O_{3}, S C l_{2}, I C l_{2}^{-}, I_{3}^{-}$ and $X e F_{2}$ , the total number of linear molecules(s)/ion(s) where the hybrization of the central atom does not have contribution from the d-orbital(s) is [Atomic number : $S = 16, C l = 17, I = 53$ and $X e = 54$ ]

Discussion

5.	17.During the fractional distillation of air,is separated firstly because(A) Argon, its boiling point is minimum among rest of the gases.IT(B) Oxygen, its boiling point is maximum among rest of the gases.(C) Nitrogen, its boiling point is minimum among rest of the gases.(D) Argon, its boiling point is maximum among rest of the gases.
Answer» 17.During the fractional distillation of air,is separated firstly because(A) Argon, its boiling point is minimum among rest of the gases.IT(B) Oxygen, its boiling point is maximum among rest of the gases.(C) Nitrogen, its boiling point is minimum among rest of the gases.(D) Argon, its boiling point is maximum among rest of the gases.

Discussion

6.	For the T-s diagram shown below, what is the value of dryness fraction of the stea-n before throttling process?Take hn=710.1 kJ/kg,hfg1=2032 kJ/kg,hf2=410.5 kJ/kg,hfg2=2157.9 kJ/kg
Answer» For the T-s diagram shown below, what is the value of dryness fraction of the stea-n before throttling process? Take $h_{n} = 710.1 k J / k g, h_{f g 1} = 2032 k J / k g, h_{f 2} = 410.5 k J / k g, h_{f g 2} = 2157.9 k J / k g$

Discussion

7.	Which of the following complexes formed by Cu2+ ions is most stable? (a) Cu2++4NH3→[Cu(NH3)4]2+, logK=11.6 (b) Cu2++4CN−→[Cu(CN)4]2−, logK=27.3 (c) Cu2++2en−→[Cu(en)2]2+, logK=15.4 (d) Cu2++4H2O→[Cu(H2O)4]2+, logK=8.9
Answer» Which of the following complexes formed by $C u^{2 +}$ ions is most stable? (a) $C u^{2 +} + 4 N H_{3} \to [C u (N H_{3})_{4}]^{2 +}, l o g K = 11.6$ (b) $C u^{2 +} + 4 C N^{-} \to [C u (C N)_{4}]^{2 -}, l o g K = 27.3$ (c) $C u^{2 +} + 2 e n^{-} \to [C u (e n)_{2}]^{2 +}, l o g K = 15.4$ (d) $C u^{2 +} + 4 H_{2} O \to [C u (H_{2} O)_{4}]^{2 +}, l o g K = 8.9$

Discussion

8.	What is a least oxidation state in 3d series?
Answer» What is a least oxidation state in 3d series?

Discussion

9.	If the heat of formation of NO2 is x \lbrack1/2N2+O2=NO .heat of reaction N2+O2=2NO is y and the heat of reaction 2NO+O2=2NO is z then (a)2x+z=y (b)2y+x=x (c)2x-z=y (d)2z+x=y
Answer» If the heat of formation of NO2 is x \lbrack1/2N2+O2=NO .heat of reaction N2+O2=2NO is y and the heat of reaction 2NO+O2=2NO is z then (a)2x+z=y (b)2y+x=x (c)2x-z=y (d)2z+x=y

Discussion

10.	How many molecules of H2 gas are present in a container of dimensions 2 m × 2 m × 3 m at STP?
Answer» How many molecules of $H_{2}$ gas are present in a container of dimensions 2 m $\times$ 2 m $\times$ 3 m at STP?

Discussion

11.	Which has a maximum number of atoms?
Answer» Which has a maximum number of atoms?

Discussion

12.	16. Calculate the enthalpy change for the process CCl4(g)------------C(g)+4Cl(g) And calculate bond enthalpy of C-Cl in CCl4(g). Δ vapH(CCl4)=30.5 kj /mol Δ fH(CCl4)=-135.5 kj/mol Δ aH(C)=715.0 kj/mol Δ aH(Cl2)=242 kj/mol Where Δ aH is enthalpy of atomisation.
Answer» 16. Calculate the enthalpy change for the process CCl4(g)------------C(g)+4Cl(g) And calculate bond enthalpy of C-Cl in CCl4(g). Δ vapH(CCl4)=30.5 kj /mol Δ fH(CCl4)=-135.5 kj/mol Δ aH(C)=715.0 kj/mol Δ aH(Cl2)=242 kj/mol Where Δ aH is enthalpy of atomisation.

Discussion

13.	Is the reagent MnO2/CH2Cl2 capable of converting 2° alcohol to ketone ? If no , why?
Answer» Is the reagent MnO2/CH2Cl2 capable of converting 2° alcohol to ketone ? If no , why?

Discussion

14.	The product of the reaction: Al4C3+D2O→
Answer» The product of the reaction: $A l_{4} C_{3} + D_{2} O \to$

Discussion

15.	An ideal gas is enclosed in a cylinder at pressure and temperature, 300 K. The mean time between two successive collisions is 6×10−8 s. If the pressure is doubled and temperature is increased to 500 K, the mean time between two successive collisions will be close to:
Answer» An ideal gas is enclosed in a cylinder at pressure and temperature, $300 K$ . The mean time between two successive collisions is $6 \times 10^{- 8} s$ . If the pressure is doubled and temperature is increased to $500 K$ , the mean time between two successive collisions will be close to:

Discussion

16.	what is bidentate
Answer» what is bidentate

Discussion

17.	An electron in an h atom in its ground state absorbs 1.5 times as much energy as the minimum required for its escape(13.6ev) from the atom .what is the wavelength of the emitted electron?
Answer» An electron in an h atom in its ground state absorbs 1.5 times as much energy as the minimum required for its escape(13.6ev) from the atom .what is the wavelength of the emitted electron?

Discussion

18.	28. Can SN1 reaction take place without protic polar solvent?
Answer» 28. Can SN1 reaction take place without protic polar solvent?

Discussion

19.	Which one of the following nitrogen oxides is an anhydride of nitrous acid ?
Answer» Which one of the following nitrogen oxides is an anhydride of nitrous acid ?

Discussion

20.	Which of the following statements about the composition of the vapour over an ideal 1: 1 molar mixture of benzene and toluene is correct? Assume that the temperature is constant at 25∘C. (Given,vapour pressure data at 25∘C. benzene = 12.8 kPa, toluene = 3.85 kPa )
Answer» Which of the following statements about the composition of the vapour over an ideal 1: 1 molar mixture of benzene and toluene is correct? Assume that the temperature is constant at $25^{\circ} C$ . (Given,vapour pressure data at $25^{\circ} C$ . benzene = 12.8 kPa, toluene = 3.85 kPa )

Discussion

21.	27. What is topomer and attropisomer?
Answer» 27. What is topomer and attropisomer?

Discussion

22.	Predict the product 'B'.
Answer» Predict the product 'B'.

Discussion

23.	An irreversible heat engine extracts heat from a high temperature source at a rate of 100kW and rejects heat to a sink at a rate of 50kW. The entire work output of the heat engiine is used to drive a reversibel heat pump operating between as set of independent isothermal heat reservoirs at 17oC and 75oC. The rate (inkW) at which the heat pump delivers heat to its hight temperature sink is
Answer» An irreversible heat engine extracts heat from a high temperature source at a rate of $100 k W$ and rejects heat to a sink at a rate of $50 k W$ . The entire work output of the heat engiine is used to drive a reversibel heat pump operating between as set of independent isothermal heat reservoirs at $17^{o} C$ and $75^{o} C$ . The rate (in $k W$ ) at which the heat pump delivers heat to its hight temperature sink is

Discussion

24.	Which has most stable +2 oxidation state?
Answer» Which has most stable +2 oxidation state?

Discussion

25.	iupac name of c-c-o-c-c and c-o-c-c-c and (ch3) ch3-c-o-ch
Answer» iupac name of c-c-o-c-c and c-o-c-c-c and (ch3) ch3-c-o-ch

Discussion

26.	How many O- atoms are shared per SiO4 tetrahedral in silicate anion of beryl mineral?
Answer» How many $O$ - atoms are shared per $S i O_{4}$ tetrahedral in silicate anion of beryl mineral?

Discussion

27.	44.What is the total charge on 75 kg of electrons?
Answer» 44.What is the total charge on 75 kg of electrons?

Discussion

28.	(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

29.	If an hypothetical metal crystallises in a face centered cubic unit cell having density (d)=100 g/cm3 and edge length of the unit cell is 100 pm, then, what is the molar mass of the metal:[1 Mark]
Answer» If an hypothetical metal crystallises in a face centered cubic unit cell having density $(d) = 100 {g/cm}^{3}$ and edge length of the unit cell is $100 pm$ , then, what is the molar mass of the metal: [1 Mark]

Discussion

30.	Haloform reaction is not given by
Answer» Haloform reaction is not given by

Discussion

31.	Which of the following ligands causes maximum crystal field splitting?
Answer» Which of the following ligands causes maximum crystal field splitting?

Discussion

32.	What is The role of Positive Kernel In forming metallic bonds
Answer» What is The role of Positive Kernel In forming metallic bonds

Discussion

33.	What are electrolytes and how do they react?
Answer» What are electrolytes and how do they react?

Discussion

34.	9. For reaction, PCl3(g)+Cl2(g) gives PCl5(g), the value of Kc at 250 degree celcious is 26.The value of Kp at this temperature will be.(what will be the R value?why?)
Answer» 9. For reaction, PCl3(g)+Cl2(g) gives PCl5(g), the value of Kc at 250 degree celcious is 26.The value of Kp at this temperature will be.(what will be the R value?why?)

Discussion

35.	12. Full information about ddt insecticide
Answer» 12. Full information about ddt insecticide

Discussion

36.	Let A be a finite set containing n distinct elements. Find the number of one-one functions that can be defined from A to A.
Answer» Let A be a finite set containing n distinct elements. Find the number of one-one functions that can be defined from A to A.

Discussion

37.	The treatment of alkylchlorides with aqueous KOH leads to the formation ofalcohols but in thepresence of alcoholic KOH, alkenes are major products. Explain.
Answer» The treatment of alkyl chlorides with aqueous KOH leads to the formation of alcohols but in the presence of alcoholic KOH, alkenes are major products. Explain.

37.

The treatment of alkylchlorides with aqueous KOH leads to the formation ofalcohols but in thepresence of alcoholic KOH, alkenes are major products. Explain.

Answer»

The treatment of alkyl
chlorides with aqueous KOH leads to the formation of

alcohols but in the
presence of alcoholic KOH, alkenes are major products. Explain.

Discussion

38.	Which of the following is the correct order of increasing field strength of ligands to form coordination compounds ?
Answer» Which of the following is the correct order of increasing field strength of ligands to form coordination compounds ?

Discussion

39.	One mole of an ideal monoatomic gas is heated at a constant pressure of one atmosphere from 0∘ to 100∘C then the change in the internal energy is
Answer» One mole of an ideal monoatomic gas is heated at a constant pressure of one atmosphere from $0^{\circ}$ to $100^{\circ} C$ then the change in the internal energy is

Discussion

40.	The dis†an ce between Na+&Cl- ions in NaCl with density 3.165g/cm-
Answer» The dis†an ce between Na+&Cl- ions in NaCl with density 3.165g/cm-

Discussion

41.	Compound A is
Answer» Compound A is

Discussion

42.	896mL of a mixture of CO and CO2 weight 1.28 g at NTP calculate the volume of CO2 in mixture at NTP
Answer» 896mL of a mixture of CO and CO2 weight 1.28 g at NTP calculate the volume of CO2 in mixture at NTP

Discussion

43.	Explain how (a,b)U(b,d) is to be found out.
Answer» Explain how (a,b)U(b,d) is to be found out.

Discussion

44.	84.What is the standard defination of Hydrogen bonding.
Answer» 84.What is the standard defination of Hydrogen bonding.

Discussion

45.	The statement that is true about H2O molecule is:
Answer» The statement that is true about H₂O molecule is:

Discussion

46.	25. Enthalpy of formation AB(g) from A2(g) and B2(g) is represented by delta H(AB) of formation in kJ/mol. Thus, electronegativity difference (delta X) between A and B is related with delta H of formation (AB) as
Answer» 25. Enthalpy of formation AB(g) from A2(g) and B2(g) is represented by delta H(AB) of formation in kJ/mol. Thus, electronegativity difference (delta X) between A and B is related with delta H of formation (AB) as

Discussion

47.	2.Mechanism of HVZ reaction . ( Named reaction of Carboxylic Acid ).
Answer» 2.Mechanism of HVZ reaction . ( Named reaction of Carboxylic Acid ).

Discussion

48.	A dihaloalkane on alkaline hydrolysis produces a ketone with formulo C3H6O. The dihaloalkane can be what??
Answer» A dihaloalkane on alkaline hydrolysis produces a ketone with formulo C3H6O. The dihaloalkane can be what??

Discussion

49.	1.68 g of Fe(s) react with 0.64 g oxygen and formFeO(s) and Fe2O3(s). If no reactant remain inreaction, select the incorrect statement about thisreaction.(1) %(by mass) of Fe2O3 is more than 2 times of %(by mass) of FeO in final product(2) % (by mass) of Fe2O3 in product is more than 70%(3) Mass of Fe2O3 in product is 1.60 g(4) Mass of FeO in product is 0.72 g
Answer» 1.68 g of Fe(s) react with 0.64 g oxygen and form FeO(s) and Fe2O3(s). If no reactant remain in reaction, select the incorrect statement about this reaction. (1) %(by mass) of Fe2O3 is more than 2 times of % (by mass) of FeO in final product (2) % (by mass) of Fe2O3 in product is more than 70% (3) Mass of Fe2O3 in product is 1.60 g (4) Mass of FeO in product is 0.72 g

Discussion

50.	Which of the following compound(s) will not undergo β- Elimination reaction on reacting with alcoholic KOH?
Answer» Which of the following compound(s) will not undergo $β$ - Elimination reaction on reacting with alcoholic KOH?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

What are the characteristics of isomers state any ten characteristics?

Which of the following compounds are formed by the oxidation of 3 – methyl butane 1, 2, 3 – triol with HIO4

43 H-C=--H(ethylene) + naoh = H-C=-CNa + h2o For the above reaction the K equilibrium is A. K>1 B. K

Among the triatomic melecules/ions, BeCl2, N−3, N2O, NO+2, O3, SCl2, ICl−2, I−3 and XeF2, the total number of linear molecules(s)/ion(s) where the hybrization of the central atom does not have contribution from the d-orbital(s) is [Atomic number : S=16,Cl=17,I=53 and Xe=54]

For the T-s diagram shown below, what is the value of dryness fraction of the stea-n before throttling process?Take hn=710.1 kJ/kg,hfg1=2032 kJ/kg,hf2=410.5 kJ/kg,hfg2=2157.9 kJ/kg

Which of the following complexes formed by Cu2+ ions is most stable? (a) Cu2++4NH3→[Cu(NH3)4]2+, logK=11.6 (b) Cu2++4CN−→[Cu(CN)4]2−, logK=27.3 (c) Cu2++2en−→[Cu(en)2]2+, logK=15.4 (d) Cu2++4H2O→[Cu(H2O)4]2+, logK=8.9

What is a least oxidation state in 3d series?

If the heat of formation of NO2 is x \lbrack1/2N2+O2=NO .heat of reaction N2+O2=2NO is y and the heat of reaction 2NO+O2=2NO is z then (a)2x+z=y (b)2y+x=x (c)2x-z=y (d)2z+x=y

How many molecules of H2 gas are present in a container of dimensions 2 m × 2 m × 3 m at STP?

Which has a maximum number of atoms?

16. Calculate the enthalpy change for the process CCl4(g)------------C(g)+4Cl(g) And calculate bond enthalpy of C-Cl in CCl4(g). Δ vapH(CCl4)=30.5 kj /mol Δ fH(CCl4)=-135.5 kj/mol Δ aH(C)=715.0 kj/mol Δ aH(Cl2)=242 kj/mol Where Δ aH is enthalpy of atomisation.

Is the reagent MnO2/CH2Cl2 capable of converting 2° alcohol to ketone ? If no , why?

The product of the reaction: Al4C3+D2O→

An ideal gas is enclosed in a cylinder at pressure and temperature, 300 K. The mean time between two successive collisions is 6×10−8 s. If the pressure is doubled and temperature is increased to 500 K, the mean time between two successive collisions will be close to:

what is bidentate

An electron in an h atom in its ground state absorbs 1.5 times as much energy as the minimum required for its escape(13.6ev) from the atom .what is the wavelength of the emitted electron?

28. Can SN1 reaction take place without protic polar solvent?

Which one of the following nitrogen oxides is an anhydride of nitrous acid ?

Which of the following statements about the composition of the vapour over an ideal 1: 1 molar mixture of benzene and toluene is correct? Assume that the temperature is constant at 25∘C. (Given,vapour pressure data at 25∘C. benzene = 12.8 kPa, toluene = 3.85 kPa )

27. What is topomer and attropisomer?

Predict the product 'B'.

Which has most stable +2 oxidation state?

iupac name of c-c-o-c-c and c-o-c-c-c and (ch3) ch3-c-o-ch

How many O- atoms are shared per SiO4 tetrahedral in silicate anion of beryl mineral?

44.What is the total charge on 75 kg of electrons?

(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.

If an hypothetical metal crystallises in a face centered cubic unit cell having density (d)=100 g/cm3 and edge length of the unit cell is 100 pm, then, what is the molar mass of the metal:[1 Mark]

Haloform reaction is not given by

Which of the following ligands causes maximum crystal field splitting?

What is The role of Positive Kernel In forming metallic bonds

What are electrolytes and how do they react?

9. For reaction, PCl3(g)+Cl2(g) gives PCl5(g), the value of Kc at 250 degree celcious is 26.The value of Kp at this temperature will be.(what will be the R value?why?)

12. Full information about ddt insecticide

Let A be a finite set containing n distinct elements. Find the number of one-one functions that can be defined from A to A.

The treatment of alkylchlorides with aqueous KOH leads to the formation ofalcohols but in thepresence of alcoholic KOH, alkenes are major products. Explain.

Which of the following is the correct order of increasing field strength of ligands to form coordination compounds ?

One mole of an ideal monoatomic gas is heated at a constant pressure of one atmosphere from 0∘ to 100∘C then the change in the internal energy is

The dis†an ce between Na+&Cl- ions in NaCl with density 3.165g/cm-

Compound A is

896mL of a mixture of CO and CO2 weight 1.28 g at NTP calculate the volume of CO2 in mixture at NTP

Explain how (a,b)U(b,d) is to be found out.

84.What is the standard defination of Hydrogen bonding.

The statement that is true about H2O molecule is:

25. Enthalpy of formation AB(g) from A2(g) and B2(g) is represented by delta H(AB) of formation in kJ/mol. Thus, electronegativity difference (delta X) between A and B is related with delta H of formation (AB) as

2.Mechanism of HVZ reaction . ( Named reaction of Carboxylic Acid ).

A dihaloalkane on alkaline hydrolysis produces a ketone with formulo C3H6O. The dihaloalkane can be what??

Which of the following compound(s) will not undergo β- Elimination reaction on reacting with alcoholic KOH?