46295 + Interview Questions in Chemistry

1.	Find the order of dipole moment of following molecules. 1. o-nitrophenol 2. o-dichlorobenzene 3. o-methyltoluene
Answer» Find the order of dipole moment of following molecules. 1. o-nitrophenol 2. o-dichlorobenzene 3. o-methyltoluene

Discussion

2.	Which one of the following compounds shows optical isomerism ?
Answer» Which one of the following compounds shows optical isomerism ?

Discussion

3.	Ethyl methyl vinyl amine has the structure
Answer» Ethyl methyl vinyl amine has the structure

Discussion

4.	What are the major differences between metals and non-metals?
Answer» What are the major differences between metals and non-metals?

Discussion

5.	Question 47A salt X is formed and gas is evolved when ethanoic acid reacts with sodium hydrogen carbonate. Name the salt X and the gas evolved. Describe an activity and draw the diagram of the apparatus to prove that the evolved gas is one which you have named. Also, write chemical equation of the reaction involved.
Answer» Question 47 A salt X is formed and gas is evolved when ethanoic acid reacts with sodium hydrogen carbonate. Name the salt X and the gas evolved. Describe an activity and draw the diagram of the apparatus to prove that the evolved gas is one which you have named. Also, write chemical equation of the reaction involved.

Discussion

6.	Which of following represent β −hydroxybutyrate− co− β −hydroxy valarate ?
Answer» $W h i c h o f f o l l o w i n g r e p r e s e n t β - h y d r o x y b u t y r a t e - c o - β - h y d r o x y v a l a r a t e ?$

Discussion

7.	Nitrogen. Gas. Of. 28g. &10atm. &57degreecelcius. Leakage of. N2. Happens. Therefore. Pressure. Falls. To. 5atm&27degree. Celcius. Amount of N2. Gas. Leaked. Out. is
Answer» Nitrogen. Gas. Of. 28g. &10atm. &57degreecelcius. Leakage of. N2. Happens. Therefore. Pressure. Falls. To. 5atm&27degree. Celcius. Amount of N2. Gas. Leaked. Out. is

Discussion

8.	35. in the presence of an acid the initial concentration of cane sugar was reduced from 0.20 to 0.10 molar in 5 hrs and form 0.2 to 0.05 molar in 10 hrs .The reaction is of : A.zero order B.first order C.second order D.third order
Answer» 35. in the presence of an acid the initial concentration of cane sugar was reduced from 0.20 to 0.10 molar in 5 hrs and form 0.2 to 0.05 molar in 10 hrs .The reaction is of : A.zero order B.first order C.second order D.third order

Discussion

9.	34.The sum of total stereoisomers and fractions on the fractional distillation of 2,3-dichloropentane is 1) 2 2) 6 3) 4 4) 3
Answer» 34.The sum of total stereoisomers and fractions on the fractional distillation of 2,3-dichloropentane is 1) 2 2) 6 3) 4 4) 3

Discussion

10.	IUPAC name for [CrF2(en)2]Cl is
Answer» IUPAC name for [CrF2(en)2]Cl is

Discussion

11.	Which of the following compounds is most polar?
Answer» Which of the following compounds is most polar?

Discussion

12.	Which of the following electrolysis is used in downs process of extracting sodium metal?
Answer» Which of the following electrolysis is used in downs process of extracting sodium metal?

Discussion

13.	Ion concentrations obtained for a groundwater sample (having pH−8.10) are given below.IonCa2+ Mg2+ Na+ HCO−3 SO2−4 Cl−Ion concentration (mg/L) 100 6 15 250 45 39 Atomic weight Ca=40 Mg=24 Na=23 H=1C=12Q=16 S=32O=16 Cl=35.5Total hardness (mg/LasCaCO3) present in the above water sample is
Answer» Ion concentrations obtained for a groundwater sample (having $p H - 8.10$ ) are given below. $\begin{matrix} Ion & C a^{2 +} & M g 2 + & N a^{+} & H C O_{3}^{-} & S O_{4}^{2 -} & C l^{-} Ion concentration (m g / L) & 100 & 6 & 15 & 250 & 45 & 39 Atomic weight & C a = 40 & M g = 24 & N a = 23 & H = 1 C = 12 Q = 16 & S = 32 O = 16 & C l = 35.5 \end{matrix}$ Total hardness $(m g / L a s C a C O_{3})$ present in the above water sample is

Discussion

14.	53. How to find that which is cathode and anode while calculating Eo cell value
Answer» 53. How to find that which is cathode and anode while calculating Eo cell value

Discussion

15.	10. Among the following elements group number is not equals to valence electrons: a) Na B) N C) Ne D) None
Answer» 10. Among the following elements group number is not equals to valence electrons: a) Na B) N C) Ne D) None

Discussion

16.	Statues and monuments in India are affected by acid rain. How?
Answer» Statues and monuments in India are affected by acid rain. How?

Discussion

17.	Treatment of ethyl alcohol with Conc. H2SO4 at 443 K gives
Answer» Treatment of ethyl alcohol with Conc. $H_{2} S O_{4}$ at 443 K gives

Discussion

18.	Two chambers, A and B, containing solutions are separated by a semipermeable membrane.(a) Solution of which chamber has a lower water potential?
Answer» Two chambers, A and B, containing solutions are separated by a semipermeable membrane. (a) Solution of which chamber has a lower water potential?

Discussion

19.	Out of the following options, which gases change the colour of damp red litmus paper?
Answer» Out of the following options, which gases change the colour of damp red litmus paper?

Discussion

20.	59. Why phenol is more reactive than anisole ?
Answer» 59. Why phenol is more reactive than anisole ?

Discussion

21.	which isomer of idopen†an e have lowest b.p
Answer» which isomer of idopen†an e have lowest b.p

Discussion

22.	Explain with examples(i) Atomic number(ii) Mass number(iii) Isotopes. (iv) Isobars(v) Give any two uses of isotopes.
Answer» Explain with examples (i) Atomic number (ii) Mass number (iii) Isotopes. (iv) Isobars (v) Give any two uses of isotopes.

22.

Explain with examples(i) Atomic number(ii) Mass number(iii) Isotopes. (iv) Isobars(v) Give any two uses of isotopes.

Answer»

Explain with examples

(i) Atomic number

(ii) Mass number

(iii) Isotopes.

(iv) Isobars

(v) Give any two uses of isotopes.

Discussion

23.	In Milikan’s experiment, static electric charge on the oil drops has been obtained by shining X-rays. If the static electric charge on the oil drop is –1.282 × 10–18 C, calculate the number of electrons present on it.
Answer» In Milikan’s experiment, static electric charge on the oil drops has been obtained by shining X-rays. If the static electric charge on the oil drop is –1.282 × $10^{- 18}$ C, calculate the number of electrons present on it.

Discussion

24.	What is the difference between benzylic alcohol and aromatic alcohol?
Answer» What is the difference between benzylic alcohol and aromatic alcohol?

Discussion

25.	14. Reaction BaO2(s) -------> BaO(s) + O2(g), delta H =+ve. In equilibrium condition, pressure of O2 depends on A increase mass of BaO2 B increase mass of BaO C increase temperature on equilibrium D increase mass of BaO2 and BaO both
Answer» 14. Reaction BaO2(s) -------> BaO(s) + O2(g), delta H =+ve. In equilibrium condition, pressure of O2 depends on A increase mass of BaO2 B increase mass of BaO C increase temperature on equilibrium D increase mass of BaO2 and BaO both

Discussion

26.	An element A in a compound ABD has oxidation number An-. It is oxidised by Cr2O−72 in acid medium. In the experiment 1.68×10−3 x moles ofK2Cr2O7 were used for 3.26×10−3 moles of ABD. The new oxidation number of A after oxidation is:
Answer» An element A in a compound ABD has oxidation number A^n-. It is oxidised by $C r_{2} O_{7}^{-} 2$ in acid medium. In the experiment 1.68 $\times$ $10^{-} 3$ x moles of $K_{2} C r_{2} O_{7}$ were used for 3.26 $\times$ $10^{-} 3$ moles of ABD. The new oxidation number of A after oxidation is:

Discussion

27.	A water sample contains 0.10 ppm of chloroform. How many molecules of chloroform will be present in 0.5 mL of this water?
Answer» A water sample contains 0.10 ppm of chloroform. How many molecules of chloroform will be present in 0.5 mL of this water?

Discussion

28.	Let the mass of a metal (hypothetical) in its oxide is 75% of the mass of the whole compound. Calculate its equivalent mass.
Answer» Let the mass of a metal (hypothetical) in its oxide is $75 %$ of the mass of the whole compound. Calculate its equivalent mass.

Discussion

29.	SURFACE CHEMISTRY persistent dialysis of lyophobic leads to coagulation??
Answer» SURFACE CHEMISTRY persistent dialysis of lyophobic leads to coagulation??

Discussion

30.	In Cr2O2−7
Answer» In $C r_{2} O_{7}^{2 -}$

Discussion

31.	Consider the following statementA) t=4/9oB) dx2-y2 >dxyC) cfse of 4d is about 50% more than 3dD) zeise salt is sigma bonded complexIncorrect statments are
Answer» Consider the following statement A) t=4/9o B) dx2-y2 >dxy C) cfse of 4d is about 50% more than 3d D) zeise salt is sigma bonded complex Incorrect statments are

Discussion

32.	31. What will be the n factor for Ba(MnO4)2 in acidic medium wear it behaves as an oxidant 1)5 2)10 3)6 4)3
Answer» 31. What will be the n factor for Ba(MnO4)2 in acidic medium wear it behaves as an oxidant 1)5 2)10 3)6 4)3

Discussion

33.	20. Why chlorobenzene does not response to SN1 AND SN2 REACTION
Answer» 20. Why chlorobenzene does not response to SN1 AND SN2 REACTION

Discussion

34.	List down any four physical properties of ionic compounds.
Answer» List down any four physical properties of ionic compounds.

Discussion

35.	how to prrdict the S and R in more than one chiral carbon compounds?how to predict the priority given in numbering of attachedmolecule presented in thes more than one chiral compound
Answer» how to prrdict the S and R in more than one chiral carbon compounds?how to predict the priority given in numbering of attachedmolecule presented in thes more than one chiral compound

Discussion

36.	which of the following is used to prepair Cl2 gas at room temp.from conc. HCl ?1)KMnO4 2)MnO2 3)H2S 4) Cr2O3
Answer» which of the following is used to prepair Cl2 gas at room temp.from conc. HCl ?1)KMnO4 2)MnO2 3)H2S 4) Cr2O3

Discussion

37.	35. explain how to make bond angle of different molecules like NO2 NO2- ClO2 ClO2- OCl2 and so on.And arrange them in decreasing order of bond angle. Briefly
Answer» 35. explain how to make bond angle of different molecules like NO2 NO2- ClO2 ClO2- OCl2 and so on.And arrange them in decreasing order of bond angle. Briefly

Discussion

38.	39.How many total cyclic isomers with molecular formula C3H3Cl2Br are possible? 1) 10 2) 6 3) 8 4) 12
Answer» 39.How many total cyclic isomers with molecular formula C3H3Cl2Br are possible? 1) 10 2) 6 3) 8 4) 12

Discussion

39.	.When equal volumes of AgNO, and NaCl solutions aremixed, the precipitation ofAgCl (K1.81 x 10-10) willoccur with(a) 10 MAg\ast and 10-10 M CI(b) 10 5M Ag and 103 M cI(c) 10 6M Ag and 105 M CI(d) 10-4 M Ag\ast and 10- M CI
Answer» .When equal volumes of AgNO, and NaCl solutions aremixed, the precipitation ofAgCl (K1.81 x 10-10) willoccur with(a) 10 MAg\ast and 10-10 M CI(b) 10 5M Ag and 103 M cI(c) 10 6M Ag and 105 M CI(d) 10-4 M Ag\ast and 10- M CI

Discussion

40.	Which of the following is/are true regarding minimum boiling azeotropes?
Answer» Which of the following is/are true regarding minimum boiling azeotropes?

Discussion

41.	calculate the number of formula units of a crystal AB,having Cscl type structure in 240 gm.The unit cell edge lengthof AB is 200 pm and density of crystal is 6gm/cc.
Answer» calculate the number of formula units of a crystal AB,having Cscl type structure in 240 gm.The unit cell edge lengthof AB is 200 pm and density of crystal is 6gm/cc.

Discussion

42.	if y=a^x,then how come dy/dx =a^x log base e a?
Answer» if y=a^x,then how come dy/dx =a^x log base e a?

Discussion

43.	If a real gas obeys the Clausius equation of state P(v- b) = RT then
Answer» If a real gas obeys the Clausius equation of state P(v- b) = RT then

Discussion

44.	Which one of the following electyrolytes has the same value of van’t Hoff factor (i) as that of Al2(SO4)3 (if all are 100% ionized)?
Answer» Which one of the following electyrolytes has the same value of van’t Hoff factor (i) as that of $A l_{2} (S O_{4})_{3}$ (if all are 100% ionized)?

Discussion

45.	Phenol associates in benzene to a certain extent for a dimer. A solution containing 20×10−3 kg of phenol in 1 kg of benzene has its freezing point decreased by 0.7 KCalculate the fraction of the phenol that has dimerisedGiven :(Kf)Benzene=5.12 K kg mol−1
Answer» Phenol associates in benzene to a certain extent for a dimer. A solution containing $20 \times 10^{- 3} k g$ of phenol in $1 k g$ of benzene has its freezing point decreased by $0.7 K$ Calculate the fraction of the phenol that has dimerised Given : $(K_{f})_{Benzene} = 5.12 K k g m o l^{- 1}$

Discussion

46.	y = 10tvy = dvy/dt =d/dt ( 10t ) = 0how 0 will come?
Answer» y = 10t vy = dvy/dt =d/dt ( 10t ) = 0 how 0 will come?

Discussion

47.	1)HCl 2) CH3COOH 3) CH3COONa 4) Rubber 5) Common Salt(m) Strong Electrolyte (n) Weak Electrolyte (o) Non-Electrolyte
Answer» 1) $H C l$ 2) $C H_{3} C O O H$ 3) $C H_{3} C O O N a$ 4) Rubber 5) Common Salt (m) Strong Electrolyte (n) Weak Electrolyte (o) Non-Electrolyte

Discussion

48.	why can't purification of fe done with cupellation rather than using bassemerisation ?
Answer» why can't purification of fe done with cupellation rather than using bassemerisation ?

Discussion

49.	Which of the following halides is stable to hydrolysis?
Answer» Which of the following halides is stable to hydrolysis?

Discussion

50.	8. Phosphorus pentoxide on treatment with excess of water followed by excess of ammonium hydroxide form diammonium hydrogen phosphate. If 100g of diammonium hydrogen phosphate is formed then find out the mass of phosphorus pentoxide initially taken
Answer» 8. Phosphorus pentoxide on treatment with excess of water followed by excess of ammonium hydroxide form diammonium hydrogen phosphate. If 100g of diammonium hydrogen phosphate is formed then find out the mass of phosphorus pentoxide initially taken

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Find the order of dipole moment of following molecules. 1. o-nitrophenol 2. o-dichlorobenzene 3. o-methyltoluene

Which one of the following compounds shows optical isomerism ?

Ethyl methyl vinyl amine has the structure

What are the major differences between metals and non-metals?

Which of following represent β −hydroxybutyrate− co− β −hydroxy valarate ?

Nitrogen. Gas. Of. 28g. &10atm. &57degreecelcius. Leakage of. N2. Happens. Therefore. Pressure. Falls. To. 5atm&27degree. Celcius. Amount of N2. Gas. Leaked. Out. is

35. in the presence of an acid the initial concentration of cane sugar was reduced from 0.20 to 0.10 molar in 5 hrs and form 0.2 to 0.05 molar in 10 hrs .The reaction is of : A.zero order B.first order C.second order D.third order

34.The sum of total stereoisomers and fractions on the fractional distillation of 2,3-dichloropentane is 1) 2 2) 6 3) 4 4) 3

IUPAC name for [CrF2(en)2]Cl is

Which of the following compounds is most polar?

Which of the following electrolysis is used in downs process of extracting sodium metal?

Ion concentrations obtained for a groundwater sample (having pH−8.10) are given below.IonCa2+ Mg2+ Na+ HCO−3 SO2−4 Cl−Ion concentration (mg/L) 100 6 15 250 45 39 Atomic weight Ca=40 Mg=24 Na=23 H=1C=12Q=16 S=32O=16 Cl=35.5Total hardness (mg/LasCaCO3) present in the above water sample is

53. How to find that which is cathode and anode while calculating Eo cell value

10. Among the following elements group number is not equals to valence electrons: a) Na B) N C) Ne D) None

Statues and monuments in India are affected by acid rain. How?

Treatment of ethyl alcohol with Conc. H2SO4 at 443 K gives

Two chambers, A and B, containing solutions are separated by a semipermeable membrane.(a) Solution of which chamber has a lower water potential?

Out of the following options, which gases change the colour of damp red litmus paper?

59. Why phenol is more reactive than anisole ?

which isomer of idopen†an e have lowest b.p

Explain with examples​(i) Atomic number​(ii) Mass number(iii) Isotopes. (iv) Isobars(v) Give any two uses of isotopes.

In Milikan’s experiment, static electric charge on the oil drops has been obtained by shining X-rays. If the static electric charge on the oil drop is –1.282 × 10–18 C, calculate the number of electrons present on it.

What is the difference between benzylic alcohol and aromatic alcohol?

14. Reaction BaO2(s) -------> BaO(s) + O2(g), delta H =+ve. In equilibrium condition, pressure of O2 depends on A increase mass of BaO2 B increase mass of BaO C increase temperature on equilibrium D increase mass of BaO2 and BaO both

An element A in a compound ABD has oxidation number An-. It is oxidised by Cr2O−72 in acid medium. In the experiment 1.68×10−3 x moles ofK2Cr2O7 were used for 3.26×10−3 moles of ABD. The new oxidation number of A after oxidation is:

A water sample contains 0.10 ppm of chloroform. How many molecules of chloroform will be present in 0.5 mL of this water?

Let the mass of a metal (hypothetical) in its oxide is 75% of the mass of the whole compound. Calculate its equivalent mass.

SURFACE CHEMISTRY persistent dialysis of lyophobic leads to coagulation??

In Cr2O2−7

Consider the following statementA) t=4/9oB) dx2-y2 >dxyC) cfse of 4d is about 50% more than 3dD) zeise salt is sigma bonded complexIncorrect statments are

31. What will be the n factor for Ba(MnO4)2 in acidic medium wear it behaves as an oxidant 1)5 2)10 3)6 4)3

20. Why chlorobenzene does not response to SN1 AND SN2 REACTION

List down any four physical properties of ionic compounds.

how to prrdict the S and R in more than one chiral carbon compounds?how to predict the priority given in numbering of attachedmolecule presented in thes more than one chiral compound

which of the following is used to prepair Cl2 gas at room temp.from conc. HCl ?1)KMnO4 2)MnO2 3)H2S 4) Cr2O3

35. explain how to make bond angle of different molecules like NO2 NO2- ClO2 ClO2- OCl2 and so on.And arrange them in decreasing order of bond angle. Briefly

39.How many total cyclic isomers with molecular formula C3H3Cl2Br are possible? 1) 10 2) 6 3) 8 4) 12

.When equal volumes of AgNO, and NaCl solutions aremixed, the precipitation ofAgCl (K1.81 x 10-10) willoccur with(a) 10 MAg\ast and 10-10 M CI(b) 10 5M Ag and 103 M cI(c) 10 6M Ag and 105 M CI(d) 10-4 M Ag\ast and 10- M CI

Which of the following is/are true regarding minimum boiling azeotropes?

calculate the number of formula units of a crystal AB,having Cscl type structure in 240 gm.The unit cell edge lengthof AB is 200 pm and density of crystal is 6gm/cc.

if y=a^x,then how come dy/dx =a^x log base e a?

If a real gas obeys the Clausius equation of state P(v- b) = RT then

Which one of the following electyrolytes has the same value of van’t Hoff factor (i) as that of Al2(SO4)3 (if all are 100% ionized)?

Phenol associates in benzene to a certain extent for a dimer. A solution containing 20×10−3 kg of phenol in 1 kg of benzene has its freezing point decreased by 0.7 KCalculate the fraction of the phenol that has dimerisedGiven :(Kf)Benzene=5.12 K kg mol−1

y = 10tvy = dvy/dt =d/dt ( 10t ) = 0how 0 will come?

1)HCl 2) CH3COOH 3) CH3COONa 4) Rubber 5) Common Salt(m) Strong Electrolyte (n) Weak Electrolyte (o) Non-Electrolyte

why can't purification of fe done with cupellation rather than using bassemerisation ?

Which of the following halides is stable to hydrolysis?

8. Phosphorus pentoxide on treatment with excess of water followed by excess of ammonium hydroxide form diammonium hydrogen phosphate. If 100g of diammonium hydrogen phosphate is formed then find out the mass of phosphorus pentoxide initially taken

Explain with examples(i) Atomic number(ii) Mass number(iii) Isotopes. (iv) Isobars(v) Give any two uses of isotopes.