46295 + Interview Questions in Chemistry

1.	Find the major product of the given reaction.CH2=CH−CH2−IHI (excess)−−−−−−−→Heat ?
Answer» Find the major product of the given reaction. $C H_{2} = C H - C H_{2} - I H I (excess) - ------ \to Heat$ ?

Discussion

2.	The number of moles of carbon dioxide which contain 8 g of oxygen is
Answer» The number of moles of carbon dioxide which contain 8 g of oxygen is

Discussion

3.	The density of vapours of substance at 1 atm and 600 K is 0.32 kg/m3. Vapours effuse through a small orifice at a rate of 1.414 times faster than O2 at same conditions. The Z of the vapours is: R=112 l atm/mol K ; 253 J/mol K
Answer» The density of vapours of substance at 1 atm and $600 K$ is $0.32 k g / m^{3}$ . Vapours effuse through a small orifice at a rate of $1.414$ times faster than $O_{2}$ at same conditions. The $Z$ of the vapours is: $R = \frac{1}{12} l a t m / m o l K; \frac{25}{3} J / m o l K$

Discussion

4.	If the radius of an octahedral void is r,and the radius of atom in close packing is R,then the relation between r& R is (1)R=0.414r (2)r=0.732R (3)r=0.414R (4)r=0.532
Answer» If the radius of an octahedral void is r,and the radius of atom in close packing is R,then the relation between r& R is (1)R=0.414r (2)r=0.732R (3)r=0.414R (4)r=0.532

Discussion

5.	ntIn case of real gases in P-V graph, below critical temperature, length of horizontal portion of isotherms increases at lower temperatures - why ?n
Answer» ntIn case of real gases in P-V graph, below critical temperature, length of horizontal portion of isotherms increases at lower temperatures - why ?n

Discussion

6.	The relationship between osmotic pressure at 273 K when 10 g glucose (P1), 10 g urea (P2) and 10 g sucrose (P3) are dissolved in 250 mL of water is:
Answer» The relationship between osmotic pressure at 273 K when 10 g glucose $(P_{1})$ , 10 g urea $(P_{2})$ and 10 g sucrose $(P_{3})$ are dissolved in 250 mL of water is:

Discussion

7.	Which reaction is not feasible?
Answer» Which reaction is not feasible?

Discussion

8.	Henry’slaw constant for the molality of methane in benzene at 298 Kis 4.27 × 105mm Hg. Calculate the solubility of methane in benzene at 298 Kunder 760 mm Hg.
Answer» Henry’s law constant for the molality of methane in benzene at 298 Kis 4.27 × 10⁵ mm Hg. Calculate the solubility of methane in benzene at 298 Kunder 760 mm Hg.

Discussion

9.	Which of the following forms the constituent of the cell walls of plant cells?
Answer» Which of the following forms the constituent of the cell walls of plant cells?

Discussion

10.	74.Hundred ml of Oxygen gas diffusion in 10 second hundred ml of gas X diffuses in t second gas X and time T can be
Answer» 74.Hundred ml of Oxygen gas diffusion in 10 second hundred ml of gas X diffuses in t second gas X and time T can be

Discussion

11.	in the following reaction ,ZnO is respectively acting as a/an : 1) ZnO + Na2O = Na2ZnO2 2) ZnO + Co2 = ZnCo3 a) acid & base (b) acid & acid c) bace & base (d) base & acid also give explanation of it ?
Answer» in the following reaction ,ZnO is respectively acting as a/an : 1) ZnO + Na2O = Na2ZnO2 2) ZnO + Co2 = ZnCo3 a) acid & base (b) acid & acid c) bace & base (d) base & acid also give explanation of it ?

Discussion

12.	What happens to the bond length of CO Bond in an alcohol(R-OH) and an ether(ROR) as the size of R(alkyl) group increases?
Answer» What happens to the bond length of CO Bond in an alcohol(R-OH) and an ether(ROR) as the size of R(alkyl) group increases?

Discussion

13.	By acidic hydrolysis −CN group changes to −COOH given I.CH3−CH\|CN−CHO H3O+−−−−→ CH3−CH\|COOH−CHO II.CH3−CH\|OH−CN H3O+−−−−→ CH3−CH\|OH−COOH III.CH3−O\|\|C−CN H3O+−−−−→ CH3−O\|\|C−COOH In which case(s) preference of nomenclature changes?
Answer» By acidic hydrolysis $- C N$ group changes to $- C O O H$ given I. $C H_{3} - C H \| C N - C H O H_{3} O^{+} - --- \to C H_{3} - C H \| C O O H - C H O$ II. $C H_{3} - C H \| O H - C N H_{3} O^{+} - --- \to C H_{3} - C H \| O H - C O O H$ III. $C H_{3} - O \| \| C - C N H_{3} O^{+} - --- \to C H_{3} - O \| \| C - C O O H$ In which case(s) preference of nomenclature changes?

13.

By acidic hydrolysis −CN group changes to −COOH given I.CH3−CH|CN−CHO H3O+−−−−→ CH3−CH|COOH−CHO II.CH3−CH|OH−CN H3O+−−−−→ CH3−CH|OH−COOH III.CH3−O||C−CN H3O+−−−−→ CH3−O||C−COOH In which case(s) preference of nomenclature changes?

Answer»

By acidic hydrolysis $- C N$ group changes to $- C O O H$ given

I. $C H_{3} - C H | C N - C H O H_{3} O^{+} - --- \to C H_{3} - C H | C O O H - C H O$

II. $C H_{3} - C H | O H - C N H_{3} O^{+} - --- \to C H_{3} - C H | O H - C O O H$

III. $C H_{3} - O | | C - C N H_{3} O^{+} - --- \to C H_{3} - O | | C - C O O H$

In which case(s) preference of nomenclature changes?

Discussion

14.	Total number of isomers possible for C4H4?
Answer» Total number of isomers possible for C4H4?

Discussion

15.	10. At room temperature (293K) orange juice gets spoilt in about 64hr. In a refrigerator at 276K juice can be stored three times as long before it gets spoilt. How long should it take for the juice to get spoiled at 313K.
Answer» 10. At room temperature (293K) orange juice gets spoilt in about 64hr. In a refrigerator at 276K juice can be stored three times as long before it gets spoilt. How long should it take for the juice to get spoiled at 313K.

Discussion

16.

What are the number of degenerate orbitals present in 4th excited state of Li+?

Answer»

What are the number of degenerate orbitals present in 4^th excited state of Li⁺?

Discussion

17.	what is a haldane effect
Answer» what is a haldane effect

Discussion

18.	17. 18 L mixture of N2 & H2 gives maximum 6L of NH3 at same temp and pressure then what will be the ratio of N2 and H2 initially??
Answer» 17. 18 L mixture of N2 & H2 gives maximum 6L of NH3 at same temp and pressure then what will be the ratio of N2 and H2 initially??

Discussion

19.	Question 26Sucrose (sugar) crystals obtained from sugarcane and beetroot are mixed together. Will it be a pure substance or a mixture? Give reasons for the same.
Answer» Question 26 Sucrose (sugar) crystals obtained from sugarcane and beetroot are mixed together. Will it be a pure substance or a mixture? Give reasons for the same.

Discussion

20.	What is the freezing point of 0.1 m glucose solution in water? For water Kf is 1.86 K kg/mol?
Answer» What is the freezing point of 0.1 m glucose solution in water? For water Kf is 1.86 K kg/mol?

Discussion

21.	is borazole polar or non polar
Answer» is borazole polar or non polar

Discussion

22.	The number of moles of KMnO4 that will be needed to react completely with one mole of sulphite ion in acidic solution is:
Answer» The number of moles of $K M n O_{4}$ that will be needed to react completely with one mole of sulphite ion in acidic solution is:

Discussion

23.	A: Compressibility factor for hydrogen varies with pressure, but always shows positive slope at0C. R: At low P, repulsive forces dominate in hydrogen gas at 0^° C. is R false)
Answer» A: Compressibility factor for hydrogen varies with pressure, but always shows positive slope at0C. R: At low P, repulsive forces dominate in hydrogen gas at 0^° C. is R false)

Discussion

24.	What is the relationship between the members of following pairs of structures? Are they structural or geometrical isomers or resonance contributors?
Answer» What is the relationship between the members of following pairs of structures? Are they structural or geometrical isomers or resonance contributors?

24.

What is the relationship between the members of following pairs of structures? Are they structural or geometrical isomers or resonance contributors?

Answer»

What is the relationship between the members of following pairs of structures? Are they structural or geometrical isomers or resonance contributors?

Discussion

25.	Detailed description of reaction--- Heating of copper powder in presence of AIR
Answer» Detailed description of reaction--- Heating of copper powder in presence of AIR

Discussion

26.	26. The number of carboxylic acid and esters possible for the formula c4h8o2 are respectively
Answer» 26. The number of carboxylic acid and esters possible for the formula c4h8o2 are respectively

Discussion

27.	Which of the following is called “baking soda”?
Answer» Which of the following is called “baking soda”?

Discussion

28.	A solution which has 10−3 M each of Mn2+,Fe2+,Zn2+ and Hg2+ is treated with 10−16 M sulphide ion. If Ksp of MnS, FeS, ZnSand HgS are 10−15, 10−23, 10−20 and 10−54 respectively, which one will precipitate first?
Answer» A solution which has $10^{- 3}$ M each of $M n^{2 +}, F e^{2 +}, Z n^{2 +}$ and $H g^{2 +}$ is treated with $10^{- 16}$ M sulphide ion. If $K_{s p}$ of $M n S$ , $F e S$ , $Z n S$ and $H g S$ are $10^{- 15}$ , $10^{- 23}$ , $10^{- 20}$ and $10^{- 54}$ respectively, which one will precipitate first?

Discussion

29.	Q.write about alkali metals stability with carbonate and sulphate.
Answer» Q.write about alkali metals stability with carbonate and sulphate.

Discussion

30.	In the complex [Pt(Py)4] [PtCl4] . The O.N. of Platinum atom in former and later part of compound are .? And how
Answer» In the complex [Pt(Py)4] [PtCl4] . The O.N. of Platinum atom in former and later part of compound are .? And how

Discussion

31.	Which of the following compounds is not soluble in HNO_3? (1) PbS (2)Cu (3) AgCl (4) CdS
Answer» Which of the following compounds is not soluble in HNO_3? (1) PbS (2)Cu (3) AgCl (4) CdS

Discussion

32.	The radius of the electron's second stationary orbit in Bohr's atom, is R. The radius of the third orbit will be,
Answer» The radius of the electron's second stationary orbit in Bohr's atom, is $R$ . The radius of the third orbit will be,

Discussion

33.	Consider the ground state of Cr atom (X=24). The number of electrons with the azimuthal quantum numbers, l=1 and 2 are, respectively
Answer» Consider the ground state of $C r$ atom $(X = 24)$ . The number of electrons with the azimuthal quantum numbers, $l = 1 and 2$ are, respectively

Discussion

34.	Why is polarization capacity maximum in pseudo inert gas configuration?
Answer» Why is polarization capacity maximum in pseudo inert gas configuration?

Discussion

35.	Which is more acidic p-nitroaniline or aniline
Answer» Which is more acidic p-nitroaniline or aniline

Discussion

36.	Which of the following explanation is best for not placing hydrogen with alkali metals or halogen
Answer» Which of the following explanation is best for not placing hydrogen with alkali metals or halogen

Discussion

37.	Compressive strength of any structural concrete sample should not be less than specified characteristic compressive strength minus.
Answer» Compressive strength of any structural concrete sample should not be less than specified characteristic compressive strength minus.

Discussion

38.	From chloral,DDT,pyrene,gammexane which has the highest chlorine content?
Answer» From chloral,DDT,pyrene,gammexane which has the highest chlorine content?

Discussion

39.	Nomenclature regarding unsaturated compound s
Answer» Nomenclature regarding unsaturated compound s

Discussion

40.	Find the Oxidation State of Sulphur in SO(CH3)2
Answer» Find the Oxidation State of Sulphur in SO(CH3)2

Discussion

41.	A binary solid (A+B−) has a zinc blende structure with B− ions constituting the lattice and A+ ions occupying 25% tetrahedral voids. The formula of solid is
Answer» A binary solid $(A^{+} B^{-})$ has a zinc blende structure with $B^{-}$ ions constituting the lattice and $A^{+}$ ions occupying $25 %$ tetrahedral voids. The formula of solid is

Discussion

42.	Geometry of electron pairs around I in IF5?
Answer» Geometry of electron pairs around I in IF5?

Discussion

43.	26 The vapour pressure of a solution having 2g of solute X(molar atomic mass 32 g per mole) in 100 g of CS2(Vapour pressure =854torr) is 848.9 torr. The molecular formula of solute is?
Answer» 26 The vapour pressure of a solution having 2g of solute X(molar atomic mass 32 g per mole) in 100 g of CS2(Vapour pressure =854torr) is 848.9 torr. The molecular formula of solute is?

Discussion

44.	Which of the following gases will have a density of 1.9 g L−1 at 1520 torr pressure and 87 ∘C?
Answer» Which of the following gases will have a density of $1.9 {g L}^{- 1}$ at 1520 torr pressure and $87^{\circ} C$ ?

Discussion

45.	Sort the following according to increasing order of the stability of carbocation.
Answer» Sort the following according to increasing order of the stability of carbocation.

Discussion

46.	ntA+B= products rate of reaction doubled when conc ofA was doubled,rateagain doubled when conc ofA,B was doubledOrder ofreactionw.r.tAANDB?n
Answer» ntA+B= products rate of reaction doubled when conc ofA was doubled,rateagain doubled when conc ofA,B was doubledOrder ofreactionw.r.tAANDB?n

Discussion

47.	En = -313.6/n^2 kcal/mole. If the value of E = -34.84 kcal/mole, to which value does n correspondwhat does En, E, n mean here
Answer» En = -313.6/n^2 kcal/mole. If the value of E = -34.84 kcal/mole, to which value does n correspond what does En, E, n mean here

Discussion

48.	How come 9g of Al equivalent to 8g of O ?
Answer» How come 9g of Al equivalent to 8g of O ?

Discussion

49.	In a ccp structure of a compound XY , the atom X is located at body centre octahedral void .The ratio of first to fourth coordination number of X is ________
Answer» In a ccp structure of a compound XY , the atom X is located at body centre octahedral void .The ratio of first to fourth coordination number of X is ________

Discussion

50.	For a reaction to occur spontaneously
Answer» For a reaction to occur spontaneously

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Find the major product of the given reaction.CH2=CH−CH2−IHI (excess)−−−−−−−→Heat ?

The number of moles of carbon dioxide which contain 8 g of oxygen is

The density of vapours of substance at 1 atm and 600 K is 0.32 kg/m3. Vapours effuse through a small orifice at a rate of 1.414 times faster than O2 at same conditions. The Z of the vapours is: R=112 l atm/mol K ; 253 J/mol K

If the radius of an octahedral void is r,and the radius of atom in close packing is R,then the relation between r& R is (1)R=0.414r (2)r=0.732R (3)r=0.414R (4)r=0.532

ntIn case of real gases in P-V graph, below critical temperature, length of horizontal portion of isotherms increases at lower temperatures - why ?n

The relationship between osmotic pressure at 273 K when 10 g glucose (P1), 10 g urea (P2) and 10 g sucrose (P3) are dissolved in 250 mL of water is:

Which reaction is not feasible?

Henry’slaw constant for the molality of methane in benzene at 298 Kis 4.27 × 105mm Hg. Calculate the solubility of methane in benzene at 298 Kunder 760 mm Hg.

Which of the following forms the constituent of the cell walls of plant cells?

74.Hundred ml of Oxygen gas diffusion in 10 second hundred ml of gas X diffuses in t second gas X and time T can be

in the following reaction ,ZnO is respectively acting as a/an : 1) ZnO + Na2O = Na2ZnO2 2) ZnO + Co2 = ZnCo3 a) acid & base (b) acid & acid c) bace & base (d) base & acid also give explanation of it ?

What happens to the bond length of CO Bond in an alcohol(R-OH) and an ether(ROR) as the size of R(alkyl) group increases?

By acidic hydrolysis −CN group changes to −COOH given I.CH3−CH|CN−CHO H3O+−−−−→ CH3−CH|COOH−CHO II.CH3−CH|OH−CN H3O+−−−−→ CH3−CH|OH−COOH III.CH3−O||C−CN H3O+−−−−→ CH3−O||C−COOH In which case(s) preference of nomenclature changes?

Total number of isomers possible for C4H4?

10. At room temperature (293K) orange juice gets spoilt in about 64hr. In a refrigerator at 276K juice can be stored three times as long before it gets spoilt. How long should it take for the juice to get spoiled at 313K.

What are the number of degenerate orbitals present in 4th excited state of Li+?

what is a haldane effect

17. 18 L mixture of N2 & H2 gives maximum 6L of NH3 at same temp and pressure then what will be the ratio of N2 and H2 initially??

Question 26Sucrose (sugar) crystals obtained from sugarcane and beetroot are mixed together. Will it be a pure substance or a mixture? Give reasons for the same.

What is the freezing point of 0.1 m glucose solution in water? For water Kf is 1.86 K kg/mol?

is borazole polar or non polar

The number of moles of KMnO4 that will be needed to react completely with one mole of sulphite ion in acidic solution is:

A: Compressibility factor for hydrogen varies with pressure, but always shows positive slope at0C. R: At low P, repulsive forces dominate in hydrogen gas at 0^° C. is R false)

What is the relationship between the members of following pairs of structures? Are they structural or geometrical isomers or resonance contributors?

Detailed description of reaction--- Heating of copper powder in presence of AIR

26. The number of carboxylic acid and esters possible for the formula c4h8o2 are respectively

Which of the following is called “baking soda”?

A solution which has 10−3 M each of Mn2+,Fe2+,Zn2+ and Hg2+ is treated with 10−16 M sulphide ion. If Ksp of MnS, FeS, ZnSand HgS are 10−15, 10−23, 10−20 and 10−54 respectively, which one will precipitate first?

Q.write about alkali metals stability with carbonate and sulphate.

In the complex [Pt(Py)4] [PtCl4] . The O.N. of Platinum atom in former and later part of compound are .? And how

Which of the following compounds is not soluble in HNO_3? (1) PbS (2)Cu (3) AgCl (4) CdS

The radius of the electron's second stationary orbit in Bohr's atom, is R. The radius of the third orbit will be,

Consider the ground state of Cr atom (X=24). The number of electrons with the azimuthal quantum numbers, l=1 and 2 are, respectively

Why is polarization capacity maximum in pseudo inert gas configuration?

Which is more acidic p-nitroaniline or aniline

Which of the following explanation is best for not placing hydrogen with alkali metals or halogen

Compressive strength of any structural concrete sample should not be less than specified characteristic compressive strength minus.

From chloral,DDT,pyrene,gammexane which has the highest chlorine content?

Nomenclature regarding unsaturated compound s

Find the Oxidation State of Sulphur in SO(CH3)2

A binary solid (A+B−) has a zinc blende structure with B− ions constituting the lattice and A+ ions occupying 25% tetrahedral voids. The formula of solid is

Geometry of electron pairs around I in IF5?

26 The vapour pressure of a solution having 2g of solute X(molar atomic mass 32 g per mole) in 100 g of CS2(Vapour pressure =854torr) is 848.9 torr. The molecular formula of solute is?

Which of the following gases will have a density of 1.9 g L−1 at 1520 torr pressure and 87 ∘C?

Sort the following according to increasing order of the stability of carbocation.

ntA+B= products rate of reaction doubled when conc ofA was doubled,rateagain doubled when conc ofA,B was doubledOrder ofreactionw.r.tAANDB?n

En = -313.6/n^2 kcal/mole. If the value of E = -34.84 kcal/mole, to which value does n correspondwhat does En, E, n mean here

How come 9g of Al equivalent to 8g of O ?

In a ccp structure of a compound XY , the atom X is located at body centre octahedral void .The ratio of first to fourth coordination number of X is ________

For a reaction to occur spontaneously