2600 + Interview Questions in Chemistry Page 36 InterviewSolution

1751.	Which out of the following is not a state function?
Answer» Which out of the following is not a state function?

Discussion

1752.	Gangue particles can be removed from cassiterite ore by the process of _______.
Answer» Gangue particles can be removed from cassiterite ore by the process of _______.

Discussion

1753.	Maximum number of hydrogen bonds formed by a H2O molecule is _____
Answer» Maximum number of hydrogen bonds formed by a $H_{2} O$ molecule is _____

Discussion

1754.	The movement of electrons in which one of the structure is not shown correctly?
Answer» The movement of electrons in which one of the structure is not shown correctly?

Discussion

1755.	The electron affinity values for the halogens show the following trend:
Answer» The electron affinity values for the halogens show the following trend:

Discussion

1756.	Which of the following can function as an oxidizing as well as a reducing agent ?
Answer» Which of the following can function as an oxidizing as well as a reducing agent ?

Discussion

1757.	List - IList - II(P)Very dilute solution of HCl(1)O2evolved at anode(Q)Very dilute solution of KCl(2)H2evolved at cathode(R)Concentrated solution of NaCl(3)Cl2evolved at anode(S)Fairly concentrated solution ofAgNO3(4)Na deposition at cathode(5)Ag deposition at cathode(6)K deposition at cathodeMatch each product in LIST-I with one or more reaction in LIST-II and choose the correct option.
Answer» $\begin{matrix} List - I & List - II (P) & Very dilute solution of HCl & (1) & O_{2} evolved at anode (Q) & Very dilute solution of KCl & (2) & H_{2} evolved at cathode (R) & Concentrated solution of NaCl & (3) & C l_{2} evolved at anode (S) & Fairly concentrated solution of A g N O_{3} & (4) & Na deposition at cathode (5) & Ag deposition at cathode (6) & K deposition at cathode \end{matrix}$ Match each product in LIST-I with one or more reaction in LIST-II and choose the correct option.

Discussion

1758.	Under the same reaction conditions, the initial concentration of 1.386 mol dm−3 of a substance becomes half in 40 seconds and 20 seconds through first order and zero order kinetics, respectively.The ratio (k1/k0) of the rate constants for first order (k1) and zero order (k0)of the reaction is
Answer» Under the same reaction conditions, the initial concentration of 1.386 mol $d m^{- 3}$ of a substance becomes half in 40 seconds and 20 seconds through first order and zero order kinetics, respectively. The ratio $(k_{1} / k_{0}$ ) of the rate constants for first order $(k_{1})$ and zero order $(k_{0})$ of the reaction is

1758.

Under the same reaction conditions, the initial concentration of 1.386 mol dm−3 of a substance becomes half in 40 seconds and 20 seconds through first order and zero order kinetics, respectively.The ratio (k1/k0) of the rate constants for first order (k1) and zero order (k0)of the reaction is

Answer»

Under the same reaction conditions, the initial concentration of 1.386 mol $d m^{- 3}$ of a substance becomes half in 40 seconds and 20 seconds through first order and zero order kinetics, respectively.

The ratio $(k_{1} / k_{0}$ ) of the rate constants for first order $(k_{1})$ and zero order $(k_{0})$ of the reaction is

Discussion

1759.	Which of the following is an example of non-biodegradable detergent ?
Answer» Which of the following is an example of non-biodegradable detergent ?

Discussion

1760.	Electra is almost bored now. Stupid Nernst making her solve so many problems. But wait, this is her last one. If she completes this, she is through as an apprentice! Quick. Tell her what is the Gibb's energy of a Daniel Cell. Use F=96487 C mol−1
Answer» Electra is almost bored now. Stupid Nernst making her solve so many problems. But wait, this is her last one. If she completes this, she is through as an apprentice! Quick. Tell her what is the Gibb's energy of a Daniel Cell. Use $F = 96487 C m o l^{- 1}$

Discussion

1761.	Ethyl chloride (C2H5Cl) is prepared by reaction of ethylene with hydrogen chloride:C2H4(g)+HCl(g)→C2H5Cl(g)△H=−72.3 kJ/molWhat is the value of △U (in kJ), if 98 g of ethylene and 109.5 g of HCl are allowed to react at 300 K?
Answer» Ethyl chloride $(C_{2} H_{5} C l)$ is prepared by reaction of ethylene with hydrogen chloride: $C_{2} H_{4} (g) + H C l (g) \to C_{2} H_{5} C l (g) △ H = - 72.3 k J / m o l$ What is the value of $△ U$ (in $k J$ ), if $98 g$ of ethylene and 109.5 g of $H C l$ are allowed to react at $300 K$ ?

Discussion

1762.	A solution of NaCl is
Answer» A solution of NaCl is

Discussion

1763.	Which of the following is the correct decreasing order of the stability using concept of inductive effect?(i) CH3−+CH−CH2−OCH3(ii) CH3−+CH−CH2−CH3(iii) CH3−+CH−O\|\|C−CH3
Answer» Which of the following is the correct decreasing order of the stability using concept of inductive effect? $(i) C H_{3} - + C H - C H_{2} - O C H_{3}$ $(i i) C H_{3} - + C H - C H_{2} - C H_{3}$ $(i i i) C H_{3} - + C H - O \| \| C - C H_{3}$

Discussion

1764.	The compound(s) formed on combustion of sodium metal in excess air is/are:
Answer» The compound(s) formed on combustion of sodium metal in excess air is/are:

Discussion

1765.	Which of the following represents the anode half cell reaction of a Daniel cell?
Answer» Which of the following represents the anode half cell reaction of a Daniel cell?

Discussion

1766.	Consider the composite system, which is held at 300 K, shown in the following figure. Assuming ideal gas behavior, calculate the total pressure (in atm) if the barriers separating the compartments are removed. Assume that the volume of the barriers is negligible. (Given: R=0.082 atm L/mol.K)
Answer» Consider the composite system, which is held at $300 K$ , shown in the following figure. Assuming ideal gas behavior, calculate the total pressure (in atm) if the barriers separating the compartments are removed. Assume that the volume of the barriers is negligible. (Given: $R = 0.082 a t m L / m o l . K)$

Discussion

1767.	If Λc for NH4OH is 11.5 ohm−1cm2mol−1, its degree of dissociation would be(given that λ∘NH+4 = 73.4 and λ∘OH− = 197.6 ohm−1cm2mol−1 )
Answer» If $Λ_{c}$ for $N H_{4} O H$ is 11.5 $o h m^{- 1} c m^{2} m o l^{- 1}$ , its degree of dissociation would be (given that $λ^{\circ} N H_{4}^{+}$ = 73.4 and $λ^{\circ} O H^{-}$ = 197.6 $o h m^{- 1} c m^{2} m o l^{- 1}$ )

Discussion

1768.	Among group 13 elements, the one having the lowest melting point is:
Answer» Among group 13 elements, the one having the lowest melting point is:

Discussion

1769.	A person working with white phosphorus suffers from a disease in which bones decay. It is known as:
Answer» A person working with white phosphorus suffers from a disease in which bones decay. It is known as:

Discussion

1770.	The total number of moles present in a gaseous mixture containing 8 g of oxygen, 11.2 litres of CO2 and 3 × 1022 molecules of N2 at STP is
Answer» The total number of moles present in a gaseous mixture containing $8 g$ of oxygen, $11.2 l i t r e s$ of $C O_{2}$ and $3 \times 10^{22}$ molecules of $N_{2}$ at STP is

Discussion

1771.	A polyatomic gas (γ=43) is compressed to 127 of its volume adiabatically and reversibly. If its initial pressure is P0 its new pressure will be
Answer» A polyatomic gas $(γ = \frac{4}{3})$ is compressed to $\frac{1}{27}$ of its volume adiabatically and reversibly. If its initial pressure is $P_{0}$ its new pressure will be

Discussion

1772.	For the reaction PCl3(g) + Cl2(g) ⇌ PCl5(g) at 2500∘C, the value of KC is 26, then the value of KP at the same temperature will be
Answer» For the reaction $P C l_{3} (g) + C l_{2} (g) ⇌ P C l_{5} (g)$ at $2500^{\circ} C$ , the value of $K_{C}$ is $26$ , then the value of $K_{P}$ at the same temperature will be

1772.

For the reaction PCl3(g) + Cl2(g) ⇌ PCl5(g) at 2500∘C, the value of KC is 26, then the value of KP at the same temperature will be

Answer»

For the reaction $P C l_{3} (g) + C l_{2} (g) ⇌ P C l_{5} (g)$ at $2500^{\circ} C$ , the value of $K_{C}$ is $26$ , then the value of $K_{P}$ at the same temperature will be

Discussion

1773.	Methane and ethane both can be obtained from which one of the following compounds via a single step?
Answer» Methane and ethane both can be obtained from which one of the following compounds via a single step?

Discussion

1774.	Reaction of ROH with R'MgX produce:
Answer» Reaction of ROH with R'MgX produce:

Discussion

1775.	In which of the following, a salt of type KMO2 (M = Al or B) is obtained?
Answer» In which of the following, a salt of type $K M O_{2}$ (M = Al or B) is obtained?

Discussion

1776.	The homolytic breaking of the Ca−Cb bond is easiest in:
Answer» The homolytic breaking of the $C^{a} - C^{b}$ bond is easiest in:

Discussion

1777.	Which one of the following is an acyl group?
Answer» Which one of the following is an acyl group?

Discussion

1778.	Which of the following molecules is/are polar?
Answer» Which of the following molecules is/are polar?

Discussion

1779.	A metal has a fcc lattice. The edge length of the cell is 404 pm. The density of the metal is 2.72 g cm−3 . The molar mass of the metal is (NA Avogadro's constant = 6.02×1023mol−1)
Answer» A metal has a fcc lattice. The edge length of the cell is 404 pm. The density of the metal is $2.72 g c m^{- 3}$ . The molar mass of the metal is ( $N_{A}$ Avogadro's constant = $6.02 \times 10^{23} m o l^{- 1}$ )

Discussion

1780.	Propene when heated with chlorine at about 500∘C forms
Answer» Propene when heated with chlorine at about $500^{\circ} C$ forms

Discussion

1781.	Number of chain isomers of C6H14 is:
Answer» Number of chain isomers of $C_{6} H_{14}$ is:

Discussion

1782.	In Fruendlich Isotherm, the value of 1n is
Answer» In Fruendlich Isotherm, the value of $\frac{1}{n}$ is

Discussion

1783.	The radius of which of the following orbits is the same as that of the first Bohr's orbit of hydrogen atom?
Answer» The radius of which of the following orbits is the same as that of the first Bohr's orbit of hydrogen atom?

Discussion

1784.	The ion which is not tetrahedral in shape is?
Answer» The ion which is not tetrahedral in shape is?

Discussion

1785.	Which one of the following contain asymmetric carbon atom ?
Answer» Which one of the following contain asymmetric carbon atom ?

Discussion

1786.	Which of the following may exhibit conformational isomerism?
Answer» Which of the following may exhibit conformational isomerism?

Discussion

1787.	Which of the following is γ- elimination?
Answer» Which of the following is $γ$ - elimination?

Discussion

1788.	Which of these statements about [Co(CN)6]3− is true?
Answer» Which of these statements about $[C o (C N)_{6}]^{3 -}$ is true?

Discussion

1789.	Chose the correct option where T1,T2 and T3 are three different temperatures in case of a liquid.
Answer» Chose the correct option where $T_{1}, T_{2} a n d T_{3}$ are three different temperatures in case of a liquid.

Discussion

1790.	What is the molarity of an NaOH solution if 250 mL contains 1 mg of NaOH?
Answer» What is the molarity of an $N a O H$ solution if 250 mL contains 1 mg of $N a O H$ ?

Discussion

1791.	The IUPAC name of
Answer» The IUPAC name of

Discussion

1792.	The normality of a solution that has 15 g equivalents of solute dissolved in 750 mL solution is .
Answer» The normality of a solution that has $15 g$ equivalents of solute dissolved in $750 m L$ solution is .

Discussion

1793.	Which of the following is known as freon which is used as a [DPMT 1982; CPMT 1979, 81, 89; AFMC 1995;Manipal MEE 1995; MP PET 1995, 2004]
Answer» Which of the following is known as freon which is used as a [DPMT 1982; CPMT 1979, 81, 89; AFMC 1995; Manipal MEE 1995; MP PET 1995, 2004]

1793.

Which of the following is known as freon which is used as a [DPMT 1982; CPMT 1979, 81, 89; AFMC 1995;Manipal MEE 1995; MP PET 1995, 2004]

Answer»

Which of the following is known as freon which is used as a

[DPMT 1982; CPMT 1979, 81, 89; AFMC 1995;

Manipal MEE 1995; MP PET 1995, 2004]

Discussion

1794.	Among the following metal carbonyls, the C-O bond order is lowest in:
Answer» Among the following metal carbonyls, the C-O bond order is lowest in:

Discussion

1795.	The insecticide chlordane is warmed with dilute NaOH solution for some time. The expected product would be:
Answer» The insecticide chlordane is warmed with dilute $N a O H$ solution for some time. The expected product would be:

Discussion

1796.	Sort the following in decreasing order of their magnetic moments.
Answer» Sort the following in decreasing order of their magnetic moments.

Discussion

1797.	If C - C (I), C = C(II) and C ≡ C(III) are three bond types, then their bond order will be respectively,
Answer» If C - C (I), C = C(II) and C ≡ C(III) are three bond types, then their bond order will be respectively,

Discussion

1798.	At CMC, the surfactant molecules undergo:
Answer» At CMC, the surfactant molecules undergo:

Discussion

1799.	Give the decreasing order of the reaction rates of the following benzyl alcohol with HBr.
Answer» Give the decreasing order of the reaction rates of the following benzyl alcohol with $H B r$ .

Discussion

1800.	A violet colour with sodium nitroprusside in the test of sulphur in an organic compound is due to the formation of:
Answer» A violet colour with sodium nitroprusside in the test of sulphur in an organic compound is due to the formation of:

Discussion

Explore topic-wise InterviewSolutions in .

Which out of the following is not a state function?

Gangue particles can be removed from cassiterite ore by the process of _______.

Maximum number of hydrogen bonds formed by a H2O molecule is _____

The movement of electrons in which one of the structure is not shown correctly?

The electron affinity values for the halogens show the following trend:

Which of the following can function as an oxidizing as well as a reducing agent ?

Under the same reaction conditions, the initial concentration of 1.386 mol dm−3 of a substance becomes half in 40 seconds and 20 seconds through first order and zero order kinetics, respectively.The ratio (k1/k0) of the rate constants for first order (k1) and zero order (k0)of the reaction is

Which of the following is an example of non-biodegradable detergent ?

Electra is almost bored now. Stupid Nernst making her solve so many problems. But wait, this is her last one. If she completes this, she is through as an apprentice! Quick. Tell her what is the Gibb's energy of a Daniel Cell. Use F=96487 C mol−1

Ethyl chloride (C2H5Cl) is prepared by reaction of ethylene with hydrogen chloride:C2H4(g)+HCl(g)→C2H5Cl(g)△H=−72.3 kJ/molWhat is the value of △U (in kJ), if 98 g of ethylene and 109.5 g of HCl are allowed to react at 300 K?

A solution of NaCl is

Which of the following is the correct decreasing order of the stability using concept of inductive effect?(i) CH3−+CH−CH2−OCH3(ii) CH3−+CH−CH2−CH3(iii) CH3−+CH−O||C−CH3

The compound(s) formed on combustion of sodium metal in excess air is/are:

Which of the following represents the anode half cell reaction of a Daniel cell?

Consider the composite system, which is held at 300 K, shown in the following figure. Assuming ideal gas behavior, calculate the total pressure (in atm) if the barriers separating the compartments are removed. Assume that the volume of the barriers is negligible. (Given: R=0.082 atm L/mol.K)

If Λc for NH4OH is 11.5 ohm−1cm2mol−1, its degree of dissociation would be(given that λ∘NH+4 = 73.4 and λ∘OH− = 197.6 ohm−1cm2mol−1 )

Among group 13 elements, the one having the lowest melting point is:

A person working with white phosphorus suffers from a disease in which bones decay. It is known as:

The total number of moles present in a gaseous mixture containing 8 g of oxygen, 11.2 litres of CO2 and 3 × 1022 molecules of N2 at STP is

A polyatomic gas (γ=43) is compressed to 127 of its volume adiabatically and reversibly. If its initial pressure is P0 its new pressure will be

For the reaction PCl3(g) + Cl2(g) ⇌ PCl5(g) at 2500∘C, the value of KC is 26, then the value of KP at the same temperature will be

Methane and ethane both can be obtained from which one of the following compounds via a single step?

Reaction of ROH with R'MgX produce:

In which of the following, a salt of type KMO2 (M = Al or B) is obtained?

The homolytic breaking of the Ca−Cb bond is easiest in:

Which one of the following is an acyl group?

Which of the following molecules is/are polar?

A metal has a fcc lattice. The edge length of the cell is 404 pm. The density of the metal is 2.72 g cm−3 . The molar mass of the metal is (NA Avogadro's constant = 6.02×1023mol−1)

Propene when heated with chlorine at about 500∘C forms

Number of chain isomers of C6H14 is:

In Fruendlich Isotherm, the value of 1n is

The radius of which of the following orbits is the same as that of the first Bohr's orbit of hydrogen atom?

The ion which is not tetrahedral in shape is?

Which one of the following contain asymmetric carbon atom ?

Which of the following may exhibit conformational isomerism?

Which of the following is γ- elimination?

Which of these statements about [Co(CN)6]3− is true?

Chose the correct option where T1,T2 and T3 are three different temperatures in case of a liquid.

What is the molarity of an NaOH solution if 250 mL contains 1 mg of NaOH?

The IUPAC name of

The normality of a solution that has 15 g equivalents of solute dissolved in 750 mL solution is .

Which of the following is known as freon which is used as a [DPMT 1982; CPMT 1979, 81, 89; AFMC 1995;Manipal MEE 1995; MP PET 1995, 2004]

Among the following metal carbonyls, the C-O bond order is lowest in:

The insecticide chlordane is warmed with dilute NaOH solution for some time. The expected product would be:

Sort the following in decreasing order of their magnetic moments.

If C - C (I), C = C(II) and C ≡ C(III) are three bond types, then their bond order will be respectively,

At CMC, the surfactant molecules undergo:

Give the decreasing order of the reaction rates of the following benzyl alcohol with HBr.

A violet colour with sodium nitroprusside in the test of sulphur in an organic compound is due to the formation of: