46295 + Interview Questions in Chemistry

1.	Question 34 For a binary ideal liquid solution, the variation in total vapour pressure versus composition of solution is given by which of the curves?
Answer» Question 34 For a binary ideal liquid solution, the variation in total vapour pressure versus composition of solution is given by which of the curves?

Discussion

2.	The pressure of 1 g of an ideal gas A at 300 K is found to be 2 bar. When 2 g of another ideal gas B is introduced in the same flask at the same temperature, the pressure becomes 3 bar. Which of the following is correct? (mA = mass of gas A; mB mass of gas B)
Answer» The pressure of $1 g$ of an ideal gas $A$ at $300 K$ is found to be 2 bar. When $2 g$ of another ideal gas $B$ is introduced in the same flask at the same temperature, the pressure becomes 3 bar. Which of the following is correct? $(m_{A}$ = mass of gas A; $m_{B}$ mass of gas B $)$

Discussion

3.	DEFINE ELECTROPHILES AND NUCLEOPHILES
Answer» DEFINE ELECTROPHILES AND NUCLEOPHILES

Discussion

4.	Which of the following are benzenoid compounds?
Answer» Which of the following are benzenoid compounds?

Discussion

5.	Match the polymers given in Column I with the preferred mode of polymerisation followed by thier monomers Column II. Column I Column IIA. Nylon−6,61.Free radical polymerisationB. PVC2.Ziegler−Natta polymerisation or coordination polymerisationC. HDP3. Anionic polymerisation4.Condensation polymerisation
Answer» Match the polymers given in Column I with the preferred mode of polymerisation followed by thier monomers Column II. $\begin{matrix} C o l u m n I & C o l u m n I I A . N y l o n - 6, 6 & 1. F r e e r a d i c a l p o l y m e r i s a t i o n B . P V C & 2. Z i e g l e r - N a t t a p o l y m e r i s a t i o n o r c o o r d i n a t i o n p o l y m e r i s a t i o n C . H D P & 3. A n i o n i c p o l y m e r i s a t i o n 4. C o n d e n s a t i o n p o l y m e r i s a t i o n \end{matrix}$

5.

Match the polymers given in Column I with the preferred mode of polymerisation followed by thier monomers Column II. Column I Column IIA. Nylon−6,61.Free radical polymerisationB. PVC2.Ziegler−Natta polymerisation or coordination polymerisationC. HDP3. Anionic polymerisation4.Condensation polymerisation

Answer»

Match the polymers given in Column I with the preferred mode of polymerisation followed by thier monomers Column II.

$\begin{matrix} C o l u m n I & C o l u m n I I A . N y l o n - 6, 6 & 1. F r e e r a d i c a l p o l y m e r i s a t i o n B . P V C & 2. Z i e g l e r - N a t t a p o l y m e r i s a t i o n o r c o o r d i n a t i o n p o l y m e r i s a t i o n C . H D P & 3. A n i o n i c p o l y m e r i s a t i o n 4. C o n d e n s a t i o n p o l y m e r i s a t i o n \end{matrix}$

Discussion

6.	Why does dissociation rate of Hydrogen sulphide (H2S) is decreased in presence of HCl in aqueous solution?
Answer» Why does dissociation rate of Hydrogen sulphide (H2S) is decreased in presence of HCl in aqueous solution?

Discussion

7.	The maginude of −0.5 is
Answer» The maginude of $- 0.5$ is

Discussion

8.	In which of the properties listed below, hydrogen does not show similarity with halogens? I. Nature of the oxide II. Electropositive character III. Combination with alkali metals IV. Atomicity
Answer» In which of the properties listed below, hydrogen does not show similarity with halogens? $I .$ Nature of the oxide $I I .$ Electropositive character $I I I .$ Combination with alkali metals $I V .$ Atomicity

Discussion

9.	The enthalpy of combustion of H2 (g) at 298 K to give H2O (g) is -249 kJ mol−1 and bond enthalpies of H-H and O-O are 433 kJ mol−1 and 492 kJ mol−1 respectively. The bond enthalpy of O-H is
Answer» The enthalpy of combustion of $H_{2} (g)$ at 298 K to give $H_{2} O (g)$ is -249 kJ mol $^{- 1}$ and bond enthalpies of H-H and O-O are 433 kJ mol $^{- 1}$ and 492 kJ mol $^{- 1}$ respectively. The bond enthalpy of O-H is

Discussion

10.	CO2 is isostructural with
Answer» $C O_{2}$ is isostructural with

Discussion

11.	What are antagonistic drugs?
Answer» What are antagonistic drugs?

Discussion

12.	Which of the following describes the bonds in PCl5 ?
Answer» Which of the following describes the bonds in PCl_{5 ?}

Discussion

13.	Do you observe any soil pollution in your neighborhood? What efforts will you make for controlling the soil pollution?
Answer» Do you observe any soil pollution in your neighborhood? What efforts will you make for controlling the soil pollution?

Discussion

14.	In a simple cubic unit cell, how many corners are occupied by constituent particles?
Answer» In a simple cubic unit cell, how many corners are occupied by constituent particles?

Discussion

15.	Which among the following represents the correct decreasing order of acidic strength for the following compounds?
Answer» Which among the following represents the correct decreasing order of acidic strength for the following compounds?

Discussion

16.	In which of the following reaction, product formation takes place by Hofmann rule?
Answer» In which of the following reaction, product formation takes place by Hofmann rule?

Discussion

17.	Which of the period 4 element given below exhibit its identical valence in its hydride and higher oxide?
Answer» Which of the period 4 element given below exhibit its identical valence in its hydride and higher oxide?

Discussion

18.	pKb of NH4OH is 5. The pH of a mixture containing 10 mL of 0.3 M NH4OH and 200 mL of 0.1 M (NH4)3PO4 rounded to the nearest integer is?8
Answer» p $K_{b}$ of $N H_{4} O H$ is 5. The pH of a mixture containing 10 mL of 0.3 M $N H_{4} O H$ and 200 mL of 0.1 M $({NH}_{4})_{3} {PO}_{4}$ rounded to the nearest integer is? 8

Discussion

19.	Observe this compound: Starting from benzylbromide, which sequence helps synthesize the given (above) compound ? 1: Reaction with (Ph)3P: 2: Reaction with a super strong base 3: Reaction with cylohexanone
Answer» Observe this compound: Starting from benzylbromide, which sequence helps synthesize the given (above) compound ? 1: Reaction with $(P h)_{3} P :$ 2: Reaction with a super strong base 3: Reaction with cylohexanone

Discussion

20.	From the options given below, choose the one that helps accomplish the given (above)conversion:
Answer» From the options given below, choose the one that helps accomplish the given (above)conversion:

Discussion

21.	Water-gas shift reaction is:
Answer» Water-gas shift reaction is:

Discussion

22.	Calculate △Hor for the reaction CH2Cl2(g)→C(g)+2H(g)+2Cl(g). The average bond enthalpies of C - H and C - Cl bonds are 414 kJmol−1 and 330 kJ mol−1.
Answer» Calculate $△ H_{r}^{o}$ for the reaction $C H_{2} C l_{2} (g) \to C (g) + 2 H (g) + 2 C l (g) .$ The average bond enthalpies of C - H and C - Cl bonds are $414 k J m o l^{- 1}$ and $330 k J m o l^{- 1} .$

Discussion

23.	Number of correct statements among the following is: i) Oxygen has the smallest electron affinity value in group 16 ii) Nitrogen has positive electron gain enthalpy iii) BeO is amphoteric iv) He has the highest first ionization energy in the periodic table v) Cl has the highest electron affinity in the periodic table vi) In MOH if the electronegativity differnce of M and O is greater than the electronegativity difference of O and H, then the compound will be basic. vii) H+ is the smallest cation in the periodic table.
Answer» Number of correct statements among the following is: i) Oxygen has the smallest electron affinity value in group 16 ii) Nitrogen has positive electron gain enthalpy iii) BeO is amphoteric iv) He has the highest first ionization energy in the periodic table v) Cl has the highest electron affinity in the periodic table vi) In MOH if the electronegativity differnce of M and O is greater than the electronegativity difference of O and H, then the compound will be basic. vii) $H^{+}$ is the smallest cation in the periodic table.

Discussion

24.	Action of soap is due to emulsification and micelle formation. Comment.
Answer» Action of soap is due to emulsification and micelle formation. Comment.

Discussion

25.	Q7. Consider the following statements: 1. National Science Day is celebrated on February 28. 2. It is celebrated to mark Dr. C.V. Raman’s discovery of the scattering of light, also known as the Raman Effect. Which of the above statements are correct?
Answer» Q7. Consider the following statements: 1. National Science Day is celebrated on February 28. 2. It is celebrated to mark Dr. C.V. Raman’s discovery of the scattering of light, also known as the Raman Effect. Which of the above statements are correct?

25.

Q7. Consider the following statements: 1. National Science Day is celebrated on February 28. 2. It is celebrated to mark Dr. C.V. Raman’s discovery of the scattering of light, also known as the Raman Effect. Which of the above statements are correct?

Answer»

Q7. Consider the following statements:

1. National Science Day is celebrated on February 28.

2. It is celebrated to mark Dr. C.V. Raman’s discovery of the scattering of light, also known as the Raman Effect.

Which of the above statements are correct?

Discussion

26.	Which of the following is an analgesic?
Answer» Which of the following is an analgesic?

Discussion

27.	The pair of electron in the given carbanion, CH≡C⊖ is present in which of the following orbitals?
Answer» The pair of electron in the given carbanion, $C H \equiv C^{⊖}$ is present in which of the following orbitals?

Discussion

28.	Two light sources of intensities 8 cd and 12 cd are placed on the same side of a photometer screen at a distance of 40 cm from it, Where should a 80 cm source be placed to balance the illuminance ?
Answer» Two light sources of intensities 8 cd and 12 cd are placed on the same side of a photometer screen at a distance of 40 cm from it, Where should a 80 cm source be placed to balance the illuminance ?

Discussion

29.	Sodium sulphate is soluble in water but barium sulphate is sparingly soluble because
Answer» Sodium sulphate is soluble in water but barium sulphate is sparingly soluble because

Discussion

30.	Ammonium dichromate is used in fireworks. The green coloured powder blown in air is
Answer» Ammonium dichromate is used in fireworks. The green coloured powder blown in air is

Discussion

31.	a) What happens when sulphur dioxide is passed through an aqueous solution of Fe(III) salt? b) Draw the canonical structures of ozone molecule
Answer» a) What happens when sulphur dioxide is passed through an aqueous solution of Fe(III) salt? b) Draw the canonical structures of ozone molecule

31.

a) What happens when sulphur dioxide is passed through an aqueous solution of Fe(III) salt? b) Draw the canonical structures of ozone molecule

Answer»

a) What happens when sulphur dioxide is passed through an aqueous solution of Fe(III) salt?

b) Draw the canonical structures of ozone molecule

Discussion

32.	The repeating unit of the polymer PCTFE is:
Answer» The repeating unit of the polymer PCTFE is:

Discussion

33.	Can I say that every electron withdrawing group is electrophilic??
Answer» Can I say that every electron withdrawing group is electrophilic??

Discussion

34.	In a P-V graph if the initial state is further away from the y axis than the final state, which of these statements is true?
Answer» In a P-V graph if the initial state is further away from the y axis than the final state, which of these statements is true?

34.

In a P-V graph if the initial state is further away from the y axis than the final state, which of these statements is true?

Answer»

In a P-V graph if the initial state is further away from the y axis than the final state, which of these statements is true?

Discussion

35.	Identify the species undergoing oxidation and reduction: 2Na(s) + H2(g)---- 2NaH(s)
Answer» Identify the species undergoing oxidation and reduction: 2Na(s) + H2(g)---- 2NaH(s)

Discussion

36.	The circulation of blood in the human body supplies O2 and releases CO2. The concentration of O2 and CO2 is variable but on an average, 100 ml blood contains 0.02 g of O2 and 0.08 g of CO2. The volume of O2 and CO2 at 1 atm and at body temperature 37∘ C, assuming 10 l blood in the human body is:
Answer» The circulation of blood in the human body supplies $O_{2}$ and releases $C O_{2}$ . The concentration of $O_{2}$ and $C O_{2}$ is variable but on an average, 100 ml blood contains 0.02 g of $O_{2}$ and 0.08 g of $C O_{2}$ . The volume of $O_{2}$ and $C O_{2}$ at 1 atm and at body temperature $37^{\circ} C$ , assuming 10 l blood in the human body is:

Discussion

37.	The stability of +2 oxidation state is maximum in
Answer» The stability of +2 oxidation state is maximum in

Discussion

38.	What is the definition of equilibrium
Answer» What is the definition of equilibrium

Discussion

39.	The maximum number of cyclic isomers (positional and optical) of a compound having formula C3H2Cl2 is
Answer» The maximum number of cyclic isomers (positional and optical) of a compound having formula $C_{3} H_{2} C l_{2}$ is

Discussion

40.	Elevation in boiling point was 0.520C when 6gm of a compound X was dissolved in 100 gm of water. Molecular weight of X is (K0 for water is 0.52 per 1000 gm of water)
Answer» Elevation in boiling point was 0.52⁰C when 6gm of a compound X was dissolved in 100 gm of water. Molecular weight of X is (K⁰ for water is 0.52 per 1000 gm of water)

40.

Elevation in boiling point was 0.520C when 6gm of a compound X was dissolved in 100 gm of water. Molecular weight of X is (K0 for water is 0.52 per 1000 gm of water)

Answer»

Elevation in boiling point was 0.52⁰C when 6gm of a compound X was dissolved in 100 gm of water. Molecular weight of X is (K⁰ for water is 0.52 per 1000 gm of water)

Discussion

41.	Na2B4O7+2HCl⟶2NaCl+A Na2B4O7+H2SO4→Na2SO4+A. A is?
Answer» $N a_{2} B_{4} O_{7} + 2 H C l ⟶ 2 N a C l + A$ $N a_{2} B_{4} O_{7} + H_{2} S O_{4} \to N a_{2} S O_{4} + A$ . A is?

Discussion

42.	logKpKc+logRT=0 is a relationship for the reaction
Answer» $log \frac{K_{p}}{K_{c}} + log R T = 0$ is a relationship for the reaction

Discussion

43.	Which of the following reaction is not correct?
Answer» Which of the following reaction is not correct?

Discussion

44.	In the titration of a solution of a weak acid HX with NaOH, the pH is 5.8 after 10 ml of NaOH solution has been added to it, and it is 6.4 after 20 ml of NaOH has been added to it. Find the pKa of HX? (Take 100.6=4.0 and log2=0.3)
Answer» In the titration of a solution of a weak acid HX with NaOH, the pH is 5.8 after 10 ml of NaOH solution has been added to it, and it is 6.4 after 20 ml of NaOH has been added to it. Find the $p K_{a}$ of HX? (Take $10^{0.6} = 4.0$ and $l o g 2 = 0.3$ )

Discussion

45.	An element X in the third period has a configuration ns2np1. The formula and nature of its oxide is:
Answer» An element $X$ in the third period has a configuration $n s^{2} n p^{1}$ . The formula and nature of its oxide is:

Discussion

46.	Proteins are found to have two different types of secondary structures viz α− helix and β− pleated sheet structure. α− helix structure of protein is stabilised by (a) peptide bonds (b) van der Waals, forces (c) hydrogen bonds (d) dipole-dipole interactions
Answer» Proteins are found to have two different types of secondary structures viz $α -$ helix and $β -$ pleated sheet structure. $α -$ helix structure of protein is stabilised by (a) peptide bonds (b) van der Waals, forces (c) hydrogen bonds (d) dipole-dipole interactions

Discussion

47.	An aldehyde which undergoes Cannizaro's reaction and reduces Schiff's reagent but does not reduce Fehling's Solution is:
Answer» An aldehyde which undergoes Cannizaro's reaction and reduces Schiff's reagent but does not reduce Fehling's Solution is:

47.

An aldehyde which undergoes Cannizaro's reaction and reduces Schiff's reagent but does not reduce Fehling's Solution is:

Answer»

An aldehyde which undergoes Cannizaro's reaction and reduces Schiff's reagent but does not reduce Fehling's Solution is:

Discussion

48.	In the following sequence of reactions CH3−BrKCN−−−→ AH3O+−−−→ BLiAlH4−−−−→etherC, the end product (C) is
Answer» In the following sequence of reactions $C H_{3} - B r K C N - -- \to A H_{3} O^{+} - -- \to B L i A l H_{4} - --- \to e t h e r C$ , the end product (C) is

Discussion

49.	Write down the IUPAC name for each of the following complexes and indicate the oxidation state, electronic configureation and coordination number. Also give stereochemistry and magnetic moment of the complex: K[Cr(H2O)2(C2O4)2].3H2O [Co(NH3)5Cl]Cl2 CrCl3(py)3 Cs[FeCl4] K4[Mn(CN)6]
Answer» Write down the IUPAC name for each of the following complexes and indicate the oxidation state, electronic configureation and coordination number. Also give stereochemistry and magnetic moment of the complex: $K [C r (H_{2} O)_{2} (C_{2} O_{4})_{2}] .3 H_{2} O$ $[C o (N H_{3})_{5} C l] C l_{2}$ $C r C l_{3} (p y)_{3}$ $C s [F e C l_{4}]$ $K_{4} [M_{n} (C N)_{6}]$

49.

Write down the IUPAC name for each of the following complexes and indicate the oxidation state, electronic configureation and coordination number. Also give stereochemistry and magnetic moment of the complex: K[Cr(H2O)2(C2O4)2].3H2O [Co(NH3)5Cl]Cl2 CrCl3(py)3 Cs[FeCl4] K4[Mn(CN)6]

Answer»

Write down the IUPAC name for each of the following complexes and indicate the oxidation state, electronic configureation and coordination number. Also give stereochemistry and magnetic moment of the complex:
$K [C r (H_{2} O)_{2} (C_{2} O_{4})_{2}] .3 H_{2} O$

$[C o (N H_{3})_{5} C l] C l_{2}$

$C r C l_{3} (p y)_{3}$

$C s [F e C l_{4}]$

$K_{4} [M_{n} (C N)_{6}]$

Discussion

50.	On the basis of which evidence D-glucose was assigned the following structure? CHO\|(CHOH)4\|CH2OH
Answer» On the basis of which evidence D-glucose was assigned the following structure? $C H O \| (C H O H)_{4} \| C H_{2} O H$

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Question 34 For a binary ideal liquid solution, the variation in total vapour pressure versus composition of solution is given by which of the curves?

The pressure of 1 g of an ideal gas A at 300 K is found to be 2 bar. When 2 g of another ideal gas B is introduced in the same flask at the same temperature, the pressure becomes 3 bar. Which of the following is correct? (mA = mass of gas A; mB mass of gas B)

DEFINE ELECTROPHILES AND NUCLEOPHILES

Which of the following are benzenoid compounds?

Why does dissociation rate of Hydrogen sulphide (H2S) is decreased in presence of HCl in aqueous solution?

The maginude of −0.5 is

In which of the properties listed below, hydrogen does not show similarity with halogens? I. Nature of the oxide II. Electropositive character III. Combination with alkali metals IV. Atomicity

The enthalpy of combustion of H2 (g) at 298 K to give H2O (g) is -249 kJ mol−1 and bond enthalpies of H-H and O-O are 433 kJ mol−1 and 492 kJ mol−1 respectively. The bond enthalpy of O-H is

CO2 is isostructural with

What are antagonistic drugs?

Which of the following describes the bonds in PCl5 ?

Do you observe any soil pollution in your neighborhood? What efforts will you make for controlling the soil pollution?

In a simple cubic unit cell, how many corners are occupied by constituent particles?

Which among the following represents the correct decreasing order of acidic strength for the following compounds?

In which of the following reaction, product formation takes place by Hofmann rule?

Which of the period 4 element given below exhibit its identical valence in its hydride and higher oxide?

pKb of NH4OH is 5. The pH of a mixture containing 10 mL of 0.3 M NH4OH and 200 mL of 0.1 M (NH4)3PO4 rounded to the nearest integer is?8

Observe this compound: Starting from benzylbromide, which sequence helps synthesize the given (above) compound ? 1: Reaction with (Ph)3P: 2: Reaction with a super strong base 3: Reaction with cylohexanone

From the options given below, choose the one that helps accomplish the given (above)conversion:

Water-gas shift reaction is:

Calculate △Hor for the reaction CH2Cl2(g)→C(g)+2H(g)+2Cl(g). The average bond enthalpies of C - H and C - Cl bonds are 414 kJmol−1 and 330 kJ mol−1.

Action of soap is due to emulsification and micelle formation. Comment.

Q7. Consider the following statements: 1. National Science Day is celebrated on February 28. 2. It is celebrated to mark Dr. C.V. Raman’s discovery of the scattering of light, also known as the Raman Effect. Which of the above statements are correct?

Which of the following is an analgesic?

The pair of electron in the given carbanion, CH≡C⊖ is present in which of the following orbitals?

Two light sources of intensities 8 cd and 12 cd are placed on the same side of a photometer screen at a distance of 40 cm from it, Where should a 80 cm source be placed to balance the illuminance ?

Sodium sulphate is soluble in water but barium sulphate is sparingly soluble because

Ammonium dichromate is used in fireworks. The green coloured powder blown in air is

a) What happens when sulphur dioxide is passed through an aqueous solution of Fe(III) salt? b) Draw the canonical structures of ozone molecule

The repeating unit of the polymer PCTFE is:

Can I say that every electron withdrawing group is electrophilic??

In a P-V graph if the initial state is further away from the y axis than the final state, which of these statements is true?

Identify the species undergoing oxidation and reduction: 2Na(s) + H2(g)---- 2NaH(s)

The circulation of blood in the human body supplies O2 and releases CO2. The concentration of O2 and CO2 is variable but on an average, 100 ml blood contains 0.02 g of O2 and 0.08 g of CO2. The volume of O2 and CO2 at 1 atm and at body temperature 37∘ C, assuming 10 l blood in the human body is:

The stability of +2 oxidation state is maximum in

What is the definition of equilibrium

The maximum number of cyclic isomers (positional and optical) of a compound having formula C3H2Cl2 is

Elevation in boiling point was 0.520C when 6gm of a compound X was dissolved in 100 gm of water. Molecular weight of X is (K0 for water is 0.52 per 1000 gm of water)

Na2B4O7+2HCl⟶2NaCl+A Na2B4O7+H2SO4→Na2SO4+A. A is?

logKpKc+logRT=0 is a relationship for the reaction

Which of the following reaction is not correct?

In the titration of a solution of a weak acid HX with NaOH, the pH is 5.8 after 10 ml of NaOH solution has been added to it, and it is 6.4 after 20 ml of NaOH has been added to it. Find the pKa of HX? (Take 100.6=4.0 and log2=0.3)

An element X in the third period has a configuration ns2np1. The formula and nature of its oxide is:

Proteins are found to have two different types of secondary structures viz α− helix and β− pleated sheet structure. α− helix structure of protein is stabilised by (a) peptide bonds (b) van der Waals, forces (c) hydrogen bonds (d) dipole-dipole interactions

An aldehyde which undergoes Cannizaro's reaction and reduces Schiff's reagent but does not reduce Fehling's Solution is:

In the following sequence of reactions CH3−BrKCN−−−→ AH3O+−−−→ BLiAlH4−−−−→etherC, the end product (C) is

Write down the IUPAC name for each of the following complexes and indicate the oxidation state, electronic configureation and coordination number. Also give stereochemistry and magnetic moment of the complex: K[Cr(H2O)2(C2O4)2].3H2O [Co(NH3)5Cl]Cl2 CrCl3(py)3 Cs[FeCl4] K4[Mn(CN)6]

On the basis of which evidence D-glucose was assigned the following structure? CHO|(CHOH)4|CH2OH