46295 + Interview Questions in Chemistry

1.	1 mole of Ba(OH)2 will exactly neutralize
Answer» 1 mole of $B a (O H)_{2}$ will exactly neutralize

Discussion

2.	Two narrow bores of diameters 3.0 mm and 6.0 mm are joined together to form a U-tube open at both ends. If the U-tube contains water, what is the difference in its levels in the two limbs of the tube? Surface tension of water at the temperature of the experiment is 7.3 × 10–2 N m–1. Take the angle of contact to be zero and density of water to be 1.0 × 103 kg m–3 (g = 9.8 m s–2).
Answer» Two narrow bores of diameters 3.0 mm and 6.0 mm are joined together to form a U-tube open at both ends. If the U-tube contains water, what is the difference in its levels in the two limbs of the tube? Surface tension of water at the temperature of the experiment is 7.3 × 10^–2 N m^–1. Take the angle of contact to be zero and density of water to be 1.0 × 10³ kg m^–3 (g = 9.8 m s^–2).

Discussion

3.	IUPAC name of sodium nitroprusside
Answer» IUPAC name of sodium nitroprusside

Discussion

4.	[Co(NH3)5(NO2)](NO3)2 CAN EXHIBIT HOW MANY AND WHICH TYPE OF ISOMERISM ?
Answer» [Co(NH3)5(NO2)](NO3)2 CAN EXHIBIT HOW MANY AND WHICH TYPE OF ISOMERISM ?

Discussion

5.	Total number of Bravais Lattices are
Answer» Total number of Bravais Lattices are

Discussion

6.	alculate the mass of graphite that must be burnt to produce 13.2 g of CO2
Answer» alculate the mass of graphite that must be burnt to produce 13.2 g of CO2

Discussion

7.	The loss in mass for 1 mole of potassium cation in the salt K2SO4 will be:(K2SO4→2K++SO2−4)
Answer» The loss in mass for $1 mole$ of potassium cation in the salt $K_{2} S O_{4}$ will be: ( $K_{2} S O_{4} \to 2 K^{+} + S O_{4}^{2 -}$ )

Discussion

8.	Is it necessary to remember annulene structures
Answer» Is it necessary to remember annulene structures

Discussion

9.	SiC,CaC2,Be2C,Al2C6,Al4C3,B4C How many of the given carbides are methanides?
Answer» $S i C, C a C_{2}, B e_{2} C, A l_{2} C_{6}, A l_{4} C_{3}, B_{4} C$ How many of the given carbides are methanides?

Discussion

10.	Given, E0Fe3+/Fe=0.036 V,E0Fe2+/Fe=−0.439 V. The value of standard electrode potential for the change, Fe3+(aq)+e−→Fe2+(aq) will be :
Answer» Given, $E_{F e^{3 +} / F e}^{0} = 0.036 V, E_{F e^{2 +} / F e}^{0} = - 0.439 V$ . The value of standard electrode potential for the change, $F e^{3 +} (a q) + e^{-} \to F e^{2 +} (a q)$ will be :

Discussion

11.	Question 42What is an ionic bond? With tw suitable examples the difference between an ionic and a covalent bond?
Answer» Question 42 What is an ionic bond? With tw suitable examples the difference between an ionic and a covalent bond?

11.

Question 42What is an ionic bond? With tw suitable examples the difference between an ionic and a covalent bond?

Answer»

Question 42

What is an ionic bond? With tw suitable examples the difference between an ionic and a covalent bond?

Discussion

12.	A current of dry air was passed through a solution of 2.5 gram of unknown volatile subs†an ce X in 100 gram of water and then through water around the loss in weight of the former was 1.25 and that of the latter was 0.05 calculate 1) the mole fraction of solute in the solution 2) molecular weight of the solute
Answer» A current of dry air was passed through a solution of 2.5 gram of unknown volatile subs†an ce X in 100 gram of water and then through water around the loss in weight of the former was 1.25 and that of the latter was 0.05 calculate 1) the mole fraction of solute in the solution 2) molecular weight of the solute

Discussion

13.	In Gabriel synthesis, amine is always an .
Answer» In Gabriel synthesis, amine is always an .

Discussion

14.	What is the difference between distance and displacemaent
Answer» What is the difference between distance and displacemaent

Discussion

15.	20. Two solutions of a non-electrolyte are mixed in the following manner. 480ml of 1.5M first solution + 520ml of 1.2M second solution. What is the molarity of the final solution?
Answer» 20. Two solutions of a non-electrolyte are mixed in the following manner. 480ml of 1.5M first solution + 520ml of 1.2M second solution. What is the molarity of the final solution?

Discussion

16.	A 0.025 M aqueous solution of a monobasic acid has a freezing point of −0.06∘C .Calculate acid dissociation constant (Ka)Given:(Kf)H2O=1.86 K kg mol−1Assume molality = molarity for a dilute solution
Answer» A $0.025 M$ aqueous solution of a monobasic acid has a freezing point of $- {0.06}^{\circ} C$ . Calculate acid dissociation constant $(K_{a})$ Given: $(K_{f})_{H_{2} O} = 1.86 K k g m o l^{- 1}$ Assume molality = molarity for a dilute solution

Discussion

17.	Explain proper difference between homogeneous and heterogeneous mixture
Answer» Explain proper difference between homogeneous and heterogeneous mixture

Discussion

18.	In the following the correct bond order sequence is:
Answer» In the following the correct bond order sequence is:

Discussion

19.	What is the Ph of 10ki power -6 M. Of HCL
Answer» What is the Ph of 10ki power -6 M. Of HCL

Discussion

20.	give the structure of acetic anhydrid
Answer» give the structure of acetic anhydrid

Discussion

21.	The ratio of kinetic energy to the total energy of an electron in a Bohr orbit of the hydrogen atom, is
Answer» The ratio of kinetic energy to the total energy of an electron in a Bohr orbit of the hydrogen atom, is

Discussion

22.	The number of geometrical isomers of the square planar complex\lbrack Mabcd\rbrack is a)Two b)Three c)fou
Answer» The number of geometrical isomers of the square planar complex\lbrack Mabcd\rbrack is a)Two b)Three c)fou

Discussion

23.	What is △U when 3.0 mol of liquid water evaporates at 100 ∘C?The heat of evaporation, △Hvap of water at 100 ∘C is 40.66 kJ mol−1.
Answer» What is $△ U$ when $3.0 mol$ of liquid water evaporates at $100^{\circ} C ?$ The heat of evaporation, $△ H_{v a p}$ of water at $100^{\circ} C$ is $40.66$ ${kJ mol}^{- 1}$ .

Discussion

24.	How electrosratic charge is medium dependent?
Answer» How electrosratic charge is medium dependent?

Discussion

25.	how to identify whether the process is fusion or vaporisation?
Answer» how to identify whether the process is fusion or vaporisation?

Discussion

26.	angular momentum of second bohr orbit of H atom is x.then find out angular momentum in 1st excited state of Li+2 io
Answer» angular momentum of second bohr orbit of H atom is x.then find out angular momentum in 1st excited state of Li+2 io

Discussion

27.	What are the rules of IUPAC naming regarding -neo and -iso as per the new rules of IUPAC naming?
Answer» What are the rules of IUPAC naming regarding -neo and -iso as per the new rules of IUPAC naming?

Discussion

28.	what are colinear vector
Answer» what are colinear vector

Discussion

29.	Choose the correct option for the total pressure (in atm.) in a mixture of 4 g O2 and 2 g H2 confined in a total volume of one litre at 0∘C is :[Given R=0.082L atm mol1K−1, T=273K]
Answer» Choose the correct option for the total pressure (in atm.) in a mixture of $4 g O_{2} and 2 g H_{2}$ confined in a total volume of one litre at $0^{\circ} C$ is : $[Given R = 0.082 L atm m o l^{1} K^{- 1}, T = 273 K]$

Discussion

30.	If λ1 and λ2 are the wavelengths of the first members of the Lyman and Paschen series respectively, then λ1 : λ2 is-
Answer» If $λ_{1} and λ_{2}$ are the wavelengths of the first members of the Lyman and Paschen series respectively, then $λ_{1} : λ_{2}$ is-

Discussion

31.	Consider the following redox reaction : S4O2−6(aq)+Al(s)→H2S(aq)+Al3+(aq) What will be the net balanced equation in an acidic medium (by oxidation number method).
Answer» Consider the following redox reaction : $S_{4} O_{6}^{2 -} (a q) + A l (s) \to H_{2} S (a q) + A l^{3 +} (a q)$ What will be the net balanced equation in an acidic medium (by oxidation number method).

Discussion

32.	In Freundlich adsorption isotherm at moderate pressure, the extent of adsorption (xm) is directly proportional to Pa. The value of a is:
Answer» In Freundlich adsorption isotherm at moderate pressure, the extent of adsorption $(\frac{x}{m})$ is directly proportional to $P^{a}$ . The value of $a$ is:

Discussion

33.	An electric current is passed through an aqueous solution of lead(II) chloride. What are the half-reactions those takes place at the cathode and anode?
Answer» An electric current is passed through an aqueous solution of lead(II) chloride. What are the half-reactions those takes place at the cathode and anode?

Discussion

34.	Which of the following is formed when aniline reacts with anhydrous AlCl3 ?
Answer» Which of the following is formed when aniline reacts with anhydrous $A l C l_{3}$ ?

Discussion

35.	Arrange the following according to the freezing point order of glucose solution 1%,2%,3%,10%
Answer» Arrange the following according to the freezing point order of glucose solution 1%,2%,3%,10%

Discussion

36.	the ratio of close packed atoms to tetrahedral voids in cubic close packing is
Answer» the ratio of close packed atoms to tetrahedral voids in cubic close packing is

Discussion

37.	Give the resonating structures of NO2 and N2O5.
Answer» Give the resonating structures of $N O_{2}$ and $N_{2} O_{5}$ .

Discussion

38.	Whathappens when(a) Boraxis heated strongly,(b) Boricacid is added to water,(c) Aluminiumis treated with dilute NaOH,(d) BF3is reacted with ammonia?
Answer» What happens when (a) Borax is heated strongly, (b) Boric acid is added to water, (c) Aluminium is treated with dilute NaOH, (d) BF₃ is reacted with ammonia?

38.

Whathappens when(a) Boraxis heated strongly,(b) Boricacid is added to water,(c) Aluminiumis treated with dilute NaOH,(d) BF3is reacted with ammonia?

Answer»

What
happens when

(a) Borax
is heated strongly,

(b) Boric
acid is added to water,

(c) Aluminium
is treated with dilute NaOH,

(d) BF₃
is reacted with ammonia?

Discussion

39.

Some letters are missing in each word.(a) Write ee or ea in each word. tr s sl p pl se b p t se f t t ch m t (b) Now add more words with ee and ea and put them inside the bubbles.

Answer»

Some letters are missing in each word.

(a) Write ee or ea in each word.

tr __ __ s	sl __ __ p
pl __ __ se	b __ __ p
t __ __ se	f __ __ t
t __ __ ch	m __ __ t

(b) Now add more words with ee and ea and put them inside the bubbles.

Discussion

40.	Sucrose is dextrorotatory but the mixture obtained after hydrolysis is laevorotatory. Explain.
Answer» Sucrose is dextrorotatory but the mixture obtained after hydrolysis is laevorotatory. Explain.

Discussion

41.	In given molecule, the hybridization of carbon 1, 2, 3 and 4 respectively, are :
Answer» In given molecule, the hybridization of carbon 1, 2, 3 and 4 respectively, are :

Discussion

42.	What is the equivalent weight of Cl2 in the reaction ? 3Cl2 + 6NaOH gives 5NaCl + NaClO3 + 3H2O (M = Molecular weight of Cl2) 1) 2M/5 2) 3M/5 3) M/5 4) M/2
Answer» What is the equivalent weight of Cl2 in the reaction ? 3Cl2 + 6NaOH gives 5NaCl + NaClO3 + 3H2O (M = Molecular weight of Cl2) 1) 2M/5 2) 3M/5 3) M/5 4) M/2

Discussion

43.	The half-life of 198Au is 2.7 days. Calculate the decay constant. Take atomic weight of 198Au to be 198 g mol−1.
Answer» The half-life of $^{198} A u$ is 2.7 days. Calculate the decay constant. Take atomic weight of $^{198} A u$ to be 198 g $m o l^{- 1}$ .

Discussion

44.	The maximum covalent character is seen in which of the following compounds?
Answer» The maximum covalent character is seen in which of the following compounds?

Discussion

45.	Volume strength of 1.5 N H2O2 is:
Answer» Volume strength of 1.5 N $H_{2} O_{2}$ is:

Discussion

46.	If the density of a certain gas at 30 degree C and 768 torr is 1.35 kg/m3 it's density at STP would be 1. 1.48 kg/m3 2. 1.58 kg/m3 3. 1.25 kg/m3 4. 1.4 kg/m3
Answer» If the density of a certain gas at 30 degree C and 768 torr is 1.35 kg/m3 it's density at STP would be 1. 1.48 kg/m3 2. 1.58 kg/m3 3. 1.25 kg/m3 4. 1.4 kg/m3

Discussion

47.	The metre is defined as the distance travelled by light in 1/299792458 second.why don't people choose some easier number such as 1/300000000 second?
Answer» The metre is defined as the distance travelled by light in 1/299792458 second.why don't people choose some easier number such as 1/300000000 second?

Discussion

48.	Which of the following reactions froms a major product which follows the Hofmann rule?
Answer» Which of the following reactions froms a major product which follows the Hofmann rule?

Discussion

49.	Why is it necessary to use acetic acid and. Not sulphuric acid for acidification of sodium extract for testing sulphur by lead acetate test?
Answer» Why is it necessary to use acetic acid and. Not sulphuric acid for acidification of sodium extract for testing sulphur by lead acetate test?

Discussion

50.	What is allotrope
Answer» What is allotrope

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

1 mole of Ba(OH)2 will exactly neutralize

IUPAC name of sodium nitroprusside

[Co(NH3)5(NO2)](NO3)2 CAN EXHIBIT HOW MANY AND WHICH TYPE OF ISOMERISM ?

Total number of Bravais Lattices are

alculate the mass of graphite that must be burnt to produce 13.2 g of CO2

The loss in mass for 1 mole of potassium cation in the salt K2SO4 will be:(K2SO4→2K++SO2−4)

Is it necessary to remember annulene structures

SiC,CaC2,Be2C,Al2C6,Al4C3,B4C How many of the given carbides are methanides?

Given, E0Fe3+/Fe=0.036 V,E0Fe2+/Fe=−0.439 V. The value of standard electrode potential for the change, Fe3+(aq)+e−→Fe2+(aq) will be :

Question 42What is an ionic bond? With tw suitable examples the difference between an ionic and a covalent bond?

In Gabriel synthesis, amine is always an .

What is the difference between distance and displacemaent

20. Two solutions of a non-electrolyte are mixed in the following manner. 480ml of 1.5M first solution + 520ml of 1.2M second solution. What is the molarity of the final solution?

A 0.025 M aqueous solution of a monobasic acid has a freezing point of −0.06∘C .Calculate acid dissociation constant (Ka)Given:(Kf)H2O=1.86 K kg mol−1Assume molality = molarity for a dilute solution

Explain proper difference between homogeneous and heterogeneous mixture

In the following the correct bond order sequence is:

What is the Ph of 10ki power -6 M. Of HCL

give the structure of acetic anhydrid

The ratio of kinetic energy to the total energy of an electron in a Bohr orbit of the hydrogen atom, is

The number of geometrical isomers of the square planar complex\lbrack Mabcd\rbrack is a)Two b)Three c)fou

What is △U when 3.0 mol of liquid water evaporates at 100 ∘C?The heat of evaporation, △Hvap of water at 100 ∘C is 40.66 kJ mol−1.

How electrosratic charge is medium dependent?

how to identify whether the process is fusion or vaporisation?

angular momentum of second bohr orbit of H atom is x.then find out angular momentum in 1st excited state of Li+2 io

What are the rules of IUPAC naming regarding -neo and -iso as per the new rules of IUPAC naming?

what are colinear vector

Choose the correct option for the total pressure (in atm.) in a mixture of 4 g O2 and 2 g H2 confined in a total volume of one litre at 0∘C is :[Given R=0.082L atm mol1K−1, T=273K]

If λ1 and λ2 are the wavelengths of the first members of the Lyman and Paschen series respectively, then λ1 : λ2 is-

Consider the following redox reaction : S4O2−6(aq)+Al(s)→H2S(aq)+Al3+(aq) What will be the net balanced equation in an acidic medium (by oxidation number method).

In Freundlich adsorption isotherm at moderate pressure, the extent of adsorption (xm) is directly proportional to Pa. The value of a is:

An electric current is passed through an aqueous solution of lead(II) chloride. What are the half-reactions those takes place at the cathode and anode?

Which of the following is formed when aniline reacts with anhydrous AlCl3 ?

Arrange the following according to the freezing point order of glucose solution 1%,2%,3%,10%

the ratio of close packed atoms to tetrahedral voids in cubic close packing is

Give the resonating structures of NO2 and N2O5.

Whathappens when(a) Boraxis heated strongly,(b) Boricacid is added to water,(c) Aluminiumis treated with dilute NaOH,(d) BF3is reacted with ammonia?

Some letters are missing in each word.(a) Write ee or ea in each word. tr __ __ s sl __ __ p pl __ __ se b __ __ p t __ __ se f __ __ t t __ __ ch m __ __ t (b) Now add more words with ee and ea and put them inside the bubbles.

Sucrose is dextrorotatory but the mixture obtained after hydrolysis is laevorotatory. Explain.

In given molecule, the hybridization of carbon 1, 2, 3 and 4 respectively, are :

What is the equivalent weight of Cl2 in the reaction ? 3Cl2 + 6NaOH gives 5NaCl + NaClO3 + 3H2O (M = Molecular weight of Cl2) 1) 2M/5 2) 3M/5 3) M/5 4) M/2

The half-life of 198Au is 2.7 days. Calculate the decay constant. Take atomic weight of 198Au to be 198 g mol−1.

The maximum covalent character is seen in which of the following compounds?

Volume strength of 1.5 N H2O2 is:

If the density of a certain gas at 30 degree C and 768 torr is 1.35 kg/m3 it's density at STP would be 1. 1.48 kg/m3 2. 1.58 kg/m3 3. 1.25 kg/m3 4. 1.4 kg/m3

The metre is defined as the distance travelled by light in 1/299792458 second.why don't people choose some easier number such as 1/300000000 second?

Which of the following reactions froms a major product which follows the Hofmann rule?

Why is it necessary to use acetic acid and. Not sulphuric acid for acidification of sodium extract for testing sulphur by lead acetate test?

What is allotrope

Some letters are missing in each word.(a) Write ee or ea in each word. tr s sl p pl se b p t se f t t ch m t (b) Now add more words with ee and ea and put them inside the bubbles.