2600 + Interview Questions in Chemistry Page 46 InterviewSolution

2251.	Acetic acid exists as 'X' in vapour state and 'Y' in the liquid state. 'X' and 'Y' are
Answer» Acetic acid exists as 'X' in vapour state and 'Y' in the liquid state. 'X' and 'Y' are

Discussion

2252.	The number of Cl− and Ca+2 ions in 222g. of CaCl2 are
Answer» The number of $C l^{-}$ and $C a^{+ 2}$ ions in 222g. of $C a C l_{2}$ are

Discussion

2253.	Coupling of benzene diazonium chloride with 1–naphthol in alkaline medium will give:
Answer» Coupling of benzene diazonium chloride with 1–naphthol in alkaline medium will give:

Discussion

2254.	Oxidation number of S in S2− is
Answer» Oxidation number of S in $S^{2 -}$ is

Discussion

2255.	Which of the following compound(s) can act as Lewis acid in both monomeric and dimeric form?
Answer» Which of the following compound(s) can act as Lewis acid in both monomeric and dimeric form?

Discussion

2256.	Consider the following reaction:C2H5OH + H2SO4 → Product.Among the following, which one cannot be formed as a product under any conditions?
Answer» Consider the following reaction:C₂H₅OH + H₂SO₄→ Product. Among the following, which one cannot be formed as a product under any conditions?

2256.

Consider the following reaction:C2H5OH + H2SO4 → Product.Among the following, which one cannot be formed as a product under any conditions?

Answer»

Consider the following reaction:C₂H₅OH + H₂SO₄→ Product.

Among the following, which one cannot be formed as a product under any conditions?

Discussion

2257.	Thetechnique in which the material is heated in a sloping hearth until one of the metals starts to melt and drain away from the other is known as __
Answer» Thetechnique in which the material is heated in a sloping hearth until one of the metals starts to melt and drain away from the other is known as __

Discussion

2258.	Size of the following isoelectronic species increase in the order:
Answer» Size of the following isoelectronic species increase in the order:

Discussion

2259.	Which of the following relationship(s) is/are correct for a 1st order reaction?
Answer» Which of the following relationship(s) is/are correct for a $1^{s t}$ order reaction?

Discussion

2260.	Column - IColumn - IIi.[Ni(CO)4]Planar octahedral, diamagneticii.[Fe(NO)(H2O)5]2+Planar, paramagneticiii.[Co(NO2)6]3−Octahedral, diamagneticiv.[Cu(NH3)4]2+Planar octahedral, paramagneticOctahedral, paramagnetic
Answer» $\begin{matrix} Column - I & Column - II i . & [N i (C O)_{4}] & Planar octahedral, diamagnetic i i . & [F e (N O) (H_{2} O)_{5}]^{2 +} & Planar, paramagnetic i i i . & [C o (N O_{2})_{6}]^{3 -} & Octahedral, diamagnetic i v . & [C u (N H_{3})_{4}]^{2 +} & Planar octahedral, paramagnetic Octahedral, paramagnetic \end{matrix}$

Discussion

2261.	The compound which shows geometrical isomerism is
Answer» The compound which shows geometrical isomerism is

Discussion

2262.	In the following reaction sequence the amount of D (in g) formed from 10 moles of acetophenone is : (Atomic weight in gmol−1 H=1, C=12, N=14, O=16, Br=80. The yield (%) corresponding to the product in each step is given in the parenthesis)
Answer» In the following reaction sequence the amount of D (in g) formed from 10 moles of acetophenone is : (Atomic weight in $g m o l^{- 1}$ H=1, C=12, N=14, O=16, Br=80. The yield (%) corresponding to the product in each step is given in the parenthesis)

Discussion

2263.	Boiling point of chloroform was raised by 0.323 K, when 0.5143 g of anthracene was dissolved in 35 g of chloroform. Molecular mass of anthracene is(= 3.9 kg mol-1)
Answer» Boiling point of chloroform was raised by 0.323 K, when 0.5143 g of anthracene was dissolved in 35 g of chloroform. Molecular mass of anthracene is(= 3.9 kg mol^-1)

Discussion

2264.	Which one of the following oxides is neutral
Answer» Which one of the following oxides is neutral

2264.

Which one of the following oxides is neutral

Answer»

Which one of the following oxides is neutral

Discussion

2265.	The hybridisation of boron and oxygen atom in boric acid H3BO3 are respectively:
Answer» The hybridisation of boron and oxygen atom in boric acid $H_{3} B O_{3}$ are respectively:

Discussion

2266.	For the process H2O (l)⇌H2O (g) (1 bar, 373K), the correct set of thermodynamic parameters is
Answer» For the process $H_{2} O (l) ⇌ H_{2} O (g) (1 b a r, 373 K),$ the correct set of thermodynamic parameters is

Discussion

2267.	Amorphoussolids are
Answer» Amorphous solids are

Discussion

2268.	This compound reacts with TsCl and then gets reduced by LiAlH4 to form:
Answer» This compound reacts with TsCl and then gets reduced by $L i A l H_{4}$ to form:

Discussion

2269.	Which of the following reaction(s) can be spontaneous?
Answer» Which of the following reaction(s) can be spontaneous?

Discussion

2270.	Among the following, the strongest base is: (IIT-JEE, 2000)
Answer» Among the following, the strongest base is: (IIT-JEE, 2000)

Discussion

2271.	In physical adsorption, the gas molecules are held on solid surface by:
Answer» In physical adsorption, the gas molecules are held on solid surface by:

Discussion

2272.	Match the following:Column IColumn II(1) HCl(i)Polar Molecular solid(2)Ice(ii)Non−polar Molecular solid(3) CCl4(iii)H−bonded Molecular solid
Answer» Match the following: $\begin{matrix} C o l u m n I & C o l u m n I I (1) H C l & (i) P o l a r M o l e c u l a r s o l i d (2) I c e & (i i) N o n - p o l a r M o l e c u l a r s o l i d (3) C C l_{4} & (i i i) H - b o n d e d M o l e c u l a r s o l i d \end{matrix}$

2272.

Match the following:Column IColumn II(1) HCl(i)Polar Molecular solid(2)Ice(ii)Non−polar Molecular solid(3) CCl4(iii)H−bonded Molecular solid

Answer»

Match the following:

$\begin{matrix} C o l u m n I & C o l u m n I I (1) H C l & (i) P o l a r M o l e c u l a r s o l i d (2) I c e & (i i) N o n - p o l a r M o l e c u l a r s o l i d (3) C C l_{4} & (i i i) H - b o n d e d M o l e c u l a r s o l i d \end{matrix}$

Discussion

2273.	Atomic radic of fluorine and neon in ˚A units are respectively given by
Answer» Atomic radic of fluorine and neon in $˚ A$ units are respectively given by

Discussion

2274.	The composition of a sample of Wustite is Fe0.93O1.0. What percentage of iron is present in the form of Fe(III) is
Answer» The composition of a sample of Wustite is Fe0.93O1.0. What percentage of iron is present in the form of Fe(III) is

Discussion

2275.	The total number of hybridised orbitals in methane molecule is:
Answer» The total number of hybridised orbitals in methane molecule is:

Discussion

2276.	The least stable radical among the following radicals is :
Answer» The least stable radical among the following radicals is :

Discussion

2277.	Kf of 1,4-dioxane is 4.9 mol-1 for 1000 g. The depression in freezing point for a 0.001 m solution in dioxane is:
Answer» K_f of 1,4-dioxane is 4.9 mol^-1 for 1000 g. The depression in freezing point for a 0.001 m solution in dioxane is:

Discussion

2278.	The vapour pressure will be lowest for
Answer» The vapour pressure will be lowest for

Discussion

2279.	Calculate the wavelength of radiation emitted when an electron falls from third excited state to ground state in the Lyman series of Hydrogen atom.(RH=1.1×107m−1)
Answer» Calculate the wavelength of radiation emitted when an electron falls from third excited state to ground state in the Lyman series of Hydrogen atom. ( $R_{H} = 1.1 \times 10^{7} m^{- 1})$

Discussion

2280.	Allyl halides react with metallic sodium in dry ether producing
Answer» Allyl halides react with metallic sodium in dry ether producing

Discussion

2281.	Which statement is true about a spontaneous cell reaction in galvanic cell?
Answer» Which statement is true about a spontaneous cell reaction in galvanic cell?

Discussion

2282.	The magnetic moment of a transition metal ion is found to be 3.87 B.M. It is probably
Answer» The magnetic moment of a transition metal ion is found to be 3.87 B.M. It is probably

Discussion

2283.	Of the given options, silica reacts only with .
Answer» Of the given options, silica reacts only with .

Discussion

2284.	500 mL of a N5H2SO4 and 200 ml of N10NaOH are mixed. What will be the normality of H+ ions in the solution?
Answer» $500 mL$ of a $\frac{N}{5} H_{2} S O_{4}$ and $200 ml$ of $\frac{N}{10} N a O H$ are mixed. What will be the normality of $H^{+}$ ions in the solution?

Discussion

2285.	A mixture of NH3(g) and N2H4(g) is placed in a sealed container at 27 ∘C, 0.5 atm. After complete decomposition of NH3 and N2H4 at 927 ∘C the total pressure is reached to 4.5 atm.The decomposition reactions are as follow:2NH3(g)→N2(g)+3H2(g)N2H4(g)→N2(g)+2H2(g)The percentage of NH3 (by mole) is:
Answer» A mixture of $N H_{3} (g)$ and $N_{2} H_{4} (g)$ is placed in a sealed container at $27^{\circ} C$ , $0.5 atm$ . After complete decomposition of $N H_{3}$ and $N_{2} H_{4}$ at $927^{\circ} C$ the total pressure is reached to $4.5 atm$ . The decomposition reactions are as follow: $2 N H_{3} (g) \to N_{2} (g) + 3 H_{2} (g) N_{2} H_{4} (g) \to N_{2} (g) + 2 H_{2} (g)$ The percentage of $N H_{3}$ (by mole) is:

Discussion

2286.	Decreasing order of rate of reaction of compounds towards electrophilic addition reaction with HBr is :
Answer» Decreasing order of rate of reaction of compounds towards electrophilic addition reaction with $H B r$ is :

Discussion

2287.	A catalyst is a substance which:
Answer» A catalyst is a substance which:

Discussion

2288.	When a system is taken from A to C through path ABC, 10 J of heat flows to the system and 4 J of work is done by the system.How much heat flows into the system in path ADC, if the work done by the system is 3 J?
Answer» When a system is taken from A to C through path ABC, 10 J of heat flows to the system and 4 J of work is done by the system.How much heat flows into the system in path ADC, if the work done by the system is 3 J?

Discussion

2289.	Which one of the following carbocations are most stable ?
Answer» Which one of the following carbocations are most stable ?

Discussion

2290.	For CO, isotherm is of the type as shown in the figure.Near the point A ,compressibility factor Z will be___.
Answer» For CO, isotherm is of the type as shown in the figure.Near the point A ,compressibility factor Z will be___.

2290.

For CO, isotherm is of the type as shown in the figure.Near the point A ,compressibility factor Z will be___.

Answer»

For CO, isotherm is of the type as shown in the figure.Near the point A ,compressibility factor Z will be___.

Discussion

2291.	What volume of 0.40 M H2SO4 is required to produce 34.0 g of H2S ? 8KI+5H2SO4→4K2SO4+4I2+H2S+4H2O
Answer» What volume of $0.40 M H_{2} S O_{4}$ is required to produce $34.0 g$ of $H_{2} S$ ? $8 K I + 5 H_{2} S O_{4} \to 4 K_{2} S O_{4} + 4 I_{2} + H_{2} S + 4 H_{2} O$

Discussion

2292.	Which of the following compound is expected to be aromatic?
Answer» Which of the following compound is expected to be aromatic?

Discussion

2293.	Among P, Q, R and S the aromatic compound(s) is/are:
Answer» Among P, Q, R and S the aromatic compound(s) is/are:

Discussion

2294.	Which of the following nuclides is positron emitter ?
Answer» Which of the following nuclides is positron emitter ?

Discussion

2295.	For an isothermal irreversible expansion of 1 mole of a perfect gas, identify the correct relation where symbols have their usual meaning
Answer» For an isothermal irreversible expansion of $1$ mole of a perfect gas, identify the correct relation where symbols have their usual meaning

Discussion

2296.	The reaction,CO(g)+3H2(g)⇌CH4(g)+H2O(g)is in equilibrium at 1300 K in a one litre flask. The gaseous equilibrium mixture contains 0.30 mol of CO, 0.10 mol of H2 and 0.020 mol of H2O and an unknown amount of CH4 in the flask. Determine the concentration of CH4 in the mixture. The equilibrium constant, Kc for the reaction at the given temperature is 3.90.
Answer» The reaction, $C O (g) + 3 H_{2} (g) ⇌ C H_{4} (g) + H_{2} O (g)$ is in equilibrium at $1300 K$ in a one litre flask. The gaseous equilibrium mixture contains $0.30 m o l$ of $C O$ , $0.10 m o l$ of $H_{2}$ and $0.020 m o l$ of $H_{2} O$ and an unknown amount of $C H_{4}$ in the flask. Determine the concentration of $C H_{4}$ in the mixture. The equilibrium constant, $K_{c}$ for the reaction at the given temperature is 3.90.

Discussion

2297.	0.1 M CH3COOH is titrated with 0.1M NaOH solution. What would be the difference in pH between 14 and 34 stages of neutralization of acid
Answer» 0.1 M $C H_{3}$ COOH is titrated with 0.1M NaOH solution. What would be the difference in pH between $\frac{1}{4}$ and $\frac{3}{4}$ stages of neutralization of acid

Discussion

2298.	Amongst the following compound, the optically active alkane having lowest molecular mass is
Answer» Amongst the following compound, the optically active alkane having lowest molecular mass is

Discussion

2299.	Zn\|ZnSO4(0.01M)\|\|CuSO4(1.0M)\|CuThe emf of the cell is E1. When the concentration of ZnSO4 is changed to 1.0 M and that of CuSO4 changed to 0.01 M, the emf changes to E2. From the following, which one is the relationship between E1 and E2?(Given, RTF=0.059)
Answer» $Z n \| Z n S O_{4} (0.01 M) \| \| C u S O_{4} (1.0 M) \| C u$ The emf of the cell is $E_{1}$ . When the concentration of $Z n S O_{4}$ is changed to $1.0 M$ and that of $C u S O_{4}$ changed to $0.01 M$ , the emf changes to $E_{2}$ . From the following, which one is the relationship between $E_{1}$ and $E_{2}$ ? (Given, $\frac{R T}{F} = 0.059)$

Discussion

2300.	1 mole of a gaseous compound C5H10 is completely burnt in excess of O2. The moles of CO2 formed are:
Answer» 1 mole of a gaseous compound $C_{5} H_{10}$ is completely burnt in excess of $O_{2}$ . The moles of $C O_{2}$ formed are:

Discussion

Explore topic-wise InterviewSolutions in .

Acetic acid exists as 'X' in vapour state and 'Y' in the liquid state. 'X' and 'Y' are

The number of Cl− and Ca+2 ions in 222g. of CaCl2 are

Coupling of benzene diazonium chloride with 1–naphthol in alkaline medium will give:

Oxidation number of S in S2− is

Which of the following compound(s) can act as Lewis acid in both monomeric and dimeric form?

Consider the following reaction:C2H5OH + H2SO4 → Product.Among the following, which one cannot be formed as a product under any conditions?

Thetechnique in which the material is heated in a sloping hearth until one of the metals starts to melt and drain away from the other is known as __

Size of the following isoelectronic species increase in the order:

Which of the following relationship(s) is/are correct for a 1st order reaction?

Column - IColumn - IIi.[Ni(CO)4]Planar octahedral, diamagneticii.[Fe(NO)(H2O)5]2+Planar, paramagneticiii.[Co(NO2)6]3−Octahedral, diamagneticiv.[Cu(NH3)4]2+Planar octahedral, paramagneticOctahedral, paramagnetic

The compound which shows geometrical isomerism is

In the following reaction sequence the amount of D (in g) formed from 10 moles of acetophenone is : (Atomic weight in gmol−1 H=1, C=12, N=14, O=16, Br=80. The yield (%) corresponding to the product in each step is given in the parenthesis)

Boiling point of chloroform was raised by 0.323 K, when 0.5143 g of anthracene was dissolved in 35 g of chloroform. Molecular mass of anthracene is(= 3.9 kg mol-1)

Which one of the following oxides is neutral

The hybridisation of boron and oxygen atom in boric acid H3BO3 are respectively:

For the process H2O (l)⇌H2O (g) (1 bar, 373K), the correct set of thermodynamic parameters is

Amorphoussolids are

This compound reacts with TsCl and then gets reduced by LiAlH4 to form:

Which of the following reaction(s) can be spontaneous?

Among the following, the strongest base is: (IIT-JEE, 2000)

In physical adsorption, the gas molecules are held on solid surface by:

Match the following:Column IColumn II(1) HCl(i)Polar Molecular solid(2)Ice(ii)Non−polar Molecular solid(3) CCl4(iii)H−bonded Molecular solid

Atomic radic of fluorine and neon in ˚A units are respectively given by

The composition of a sample of Wustite is Fe0.93O1.0. What percentage of iron is present in the form of Fe(III) is

The total number of hybridised orbitals in methane molecule is:

The least stable radical among the following radicals is :

Kf of 1,4-dioxane is 4.9 mol-1 for 1000 g. The depression in freezing point for a 0.001 m solution in dioxane is:

The vapour pressure will be lowest for

Calculate the wavelength of radiation emitted when an electron falls from third excited state to ground state in the Lyman series of Hydrogen atom.(RH=1.1×107m−1)

Allyl halides react with metallic sodium in dry ether producing

Which statement is true about a spontaneous cell reaction in galvanic cell?

The magnetic moment of a transition metal ion is found to be 3.87 B.M. It is probably

Of the given options, silica reacts only with .

500 mL of a N5H2SO4 and 200 ml of N10NaOH are mixed. What will be the normality of H+ ions in the solution?

Decreasing order of rate of reaction of compounds towards electrophilic addition reaction with HBr is :

A catalyst is a substance which:

When a system is taken from A to C through path ABC, 10 J of heat flows to the system and 4 J of work is done by the system.How much heat flows into the system in path ADC, if the work done by the system is 3 J?

Which one of the following carbocations are most stable ?

For CO, isotherm is of the type as shown in the figure.Near the point A ,compressibility factor Z will be___.

What volume of 0.40 M H2SO4 is required to produce 34.0 g of H2S ? 8KI+5H2SO4→4K2SO4+4I2+H2S+4H2O

Which of the following compound is expected to be aromatic?

Among P, Q, R and S the aromatic compound(s) is/are:

Which of the following nuclides is positron emitter ?

For an isothermal irreversible expansion of 1 mole of a perfect gas, identify the correct relation where symbols have their usual meaning

0.1 M CH3COOH is titrated with 0.1M NaOH solution. What would be the difference in pH between 14 and 34 stages of neutralization of acid

Amongst the following compound, the optically active alkane having lowest molecular mass is

Zn|ZnSO4(0.01M)||CuSO4(1.0M)|CuThe emf of the cell is E1. When the concentration of ZnSO4 is changed to 1.0 M and that of CuSO4 changed to 0.01 M, the emf changes to E2. From the following, which one is the relationship between E1 and E2?(Given, RTF=0.059)

1 mole of a gaseous compound C5H10 is completely burnt in excess of O2. The moles of CO2 formed are: