1708 + Interview Questions in Chemistry Page 26 InterviewSolution

1251.	Which of the following sets contain only copolymers?
Answer» Which of the following sets contain only copolymers?

Discussion

1252.	The reaction of zinc with dilute nitric acid yields:
Answer» The reaction of zinc with dilute nitric acid yields:

Discussion

1253.	Choose the correct order of reagents to be added for the following conversion:C6H5CH2Cl(i)→C6H5CH2CN(ii)→C6H5CH2CH2NH2(iii)−→ΔC6H5CH2CH2NC
Answer» Choose the correct order of reagents to be added for the following conversion: $C_{6} H_{5} {CH}_{2} Cl (i) \to C_{6} H_{5} {CH}_{2} CN (ii) \to C_{6} H_{5} {CH}_{2} {CH}_{2} {NH}_{2} (iii) - \to Δ C_{6} H_{5} {CH}_{2} {CH}_{2} NC$

Discussion

1254.	Same quantity of electricity is being used to liberate iodine (at anode) and a metal x (at cathode). The mass of x deposited is 0.6 g and the iodine is completely reduced by 50 cc of 0.1M sodium thiosulphate. Find the equivalent mass of x.
Answer» Same quantity of electricity is being used to liberate iodine (at anode) and a metal x (at cathode). The mass of x deposited is 0.6 g and the iodine is completely reduced by 50 cc of 0.1M sodium thiosulphate. Find the equivalent mass of x.

Discussion

1255.	Find the change in internal energy of 60 g of Argon gas when its change in temperature is 200 K. (Given degree of freedom of argon is 3 and its molar mass = 40 g/mole)
Answer» Find the change in internal energy of 60 g of Argon gas when its change in temperature is 200 K. (Given degree of freedom of argon is 3 and its molar mass = 40 g/mole)

Discussion

1256.	Gasoline is obtained from crude petroleum oil by
Answer» Gasoline is obtained from crude petroleum oil by

Discussion

1257.	A mixture containing 1.6 g of O2, 1.4 g of N2 and 0.4 g of He occupies a volume of 10 L at 27∘C. Calculate the partial pressure of each component of the mixture.
Answer» A mixture containing 1.6 g of $O_{2}$ , 1.4 g of $N_{2}$ and 0.4 g of $H e$ occupies a volume of $10 L$ at $27^{\circ} C$ . Calculate the partial pressure of each component of the mixture.

Discussion

1258.	Find the number of electrons present in a pure sample of (NH4)2SO4 containing 8 moles of O-atoms?
Answer» Find the number of electrons present in a pure sample of $(N H_{4})_{2} S O_{4}$ containing 8 moles of $O$ -atoms?

Discussion

1259.	Arrange in decreasing order of acid strength.HF,HCl,HBr,HI
Answer» Arrange in decreasing order of acid strength. $H F, H C l, H B r, H I$

Discussion

1260.	Which of the following compounds is formed on ozonolysis followed by hydrolysis of but-2-ene?
Answer» Which of the following compounds is formed on ozonolysis followed by hydrolysis of but-2-ene?

Discussion

1261.	Which of the following is non-benzenoid?
Answer» Which of the following is non-benzenoid?

Discussion

1262.	Purple of Cassius is
Answer» Purple of Cassius is

Discussion

1263.	How does the graph of molar conductivity vs square root of concentration look like for NaCl?
Answer» How does the graph of molar conductivity vs square root of concentration look like for NaCl?

Discussion

1264.	3p orbital has _____ angular nodes
Answer» 3p orbital has _____ angular nodes

Discussion

1265.	2Fe2O3.3H2O(s)Calcination−−−−−−−→A+3H2O(l)Find out A:
Answer» $2 {Fe}_{2} O_{3} . 3 H_{2} O(s) C a l c i n a t i o n - ------ \to A + 3 H_{2} O(l)$ Find out $A$ :

Discussion

1266.	Glucose does not react with:
Answer» Glucose does not react with:

Discussion

1267.	Which of the following reaction sequence(s) is/are suitable to convert acetone to methylamine?
Answer» Which of the following reaction sequence(s) is/are suitable to convert acetone to methylamine?

Discussion

1268.	3.0×10−3 kg of acetic acid is added to 500 mL of water. 23% of acetic acid is dissociated. If Kf and density of water are 1.86Kkgmol−1 and 0.997 g/mL respectively. The depression in freezing point of acetic acid is :
Answer» $3.0 \times 10^{- 3} k g$ of acetic acid is added to 500 mL of water. $23 %$ of acetic acid is dissociated. If Kf and density of water are $1.86 K k g m o l^{- 1}$ and 0.997 g/mL respectively. The depression in freezing point of acetic acid is :

Discussion

1269.	Which is most soluble in water?
Answer» Which is most soluble in water?

Discussion

1270.	For the reaction, N2(g)+3H2(g)⇌2NH3(g),△H is equal to :(△U = change in internal energy)
Answer» For the reaction, $N_{2} (g) + 3 H_{2} (g) ⇌ 2 N H_{3} (g), △ H$ is equal to : ( $△ U$ = change in internal energy)

Discussion

1271.	The products obtained when 2 - methyl propene is oxidized with acidic potassium permanganate is
Answer» The products obtained when 2 - methyl propene is oxidized with acidic potassium permanganate is

Discussion

1272.	0.7 g of iron reacts directly with 0.4 g of sulphur to form ferrous sulphide. If 2.8 g f iron dissolves in dilute HCl and excess of sodium sulphide solution is added, 4.4 g of iron sulphide is precipitated. If it obeys the law of constant composition, what is the ratio of weights of Fe : S ?
Answer» 0.7 g of iron reacts directly with 0.4 g of sulphur to form ferrous sulphide. If 2.8 g f iron dissolves in dilute HCl and excess of sodium sulphide solution is added, 4.4 g of iron sulphide is precipitated. If it obeys the law of constant composition, what is the ratio of weights of Fe : S ?

Discussion

1273.	Which one of the following compounds undergoes Dehydrohalogenation to the maximum extent?
Answer» Which one of the following compounds undergoes Dehydrohalogenation to the maximum extent?

Discussion

1274.	10g of a metal carbonate on heating gives 5.6 g of its oxide. The equivalent mass of the metal is ?
Answer» 10g of a metal carbonate on heating gives 5.6 g of its oxide. The equivalent mass of the metal is ?

Discussion

1275.	1 g of a gaseous compound of boron and hydrogen occupies 0.820 L at 1 atm and 3 ∘C. The compound is:(R=0.0820 L atm mol−1K−1; molar mass of H=1 g,B=10.8 g
Answer» $1 g$ of a gaseous compound of boron and hydrogen occupies $0.820 L$ at $1 atm$ and $3^{\circ} C$ . The compound is: $(R = 0.0820 {L atm mol}^{- 1} K^{- 1}; molar mass of H = 1 g, B = 10.8 g$

Discussion

1276.	Which of the following is the solution of the DE dydx=(3x+2y+4)2?
Answer» Which of the following is the solution of the DE $\frac{dy}{dx} = (3 x + 2 y + 4)^{2}$ ?

Discussion

1277.	The major product formed is
Answer» The major product formed is

Discussion

1278.	Which of the following is/are example(s) of reduction?
Answer» Which of the following is/are example(s) of reduction?

Discussion

1279.	In a hydrogen oxygen fuel cell, electricity is produced. In this process H2(g) is oxidised at anode and O2(g) reduced at cathode. Given : Cathode: O2(g)+2H2O(l)+4e−→4OH−(aq) Anode : H2(g)+2OH−(aq)→2H2O(l)+2e− 4.48 L of H2 at 1 atm and 273 K is oxidised in 9650 sec.The mass of water produced is (in grams):
Answer» In a hydrogen oxygen fuel cell, electricity is produced. In this process $H_{2} (g)$ is oxidised at anode and $O_{2} (g)$ reduced at cathode. Given : Cathode: $O_{2} (g) + 2 H_{2} O (l) + 4 e^{-} \to 4 O H^{-} (a q)$ Anode : $H_{2} (g) + 2 O H^{-} (a q) \to 2 H_{2} O (l) + 2 e^{-}$ $4.48 L$ of $H_{2}$ at $1 atm$ and $273 K$ is oxidised in $9650 sec$ . The mass of water produced is (in grams):

Discussion

1280.	H2O2 is used as
Answer» $H_{2} O_{2}$ is used as

Discussion

1281.	Aniline was first prepared by
Answer» Aniline was first prepared by

Discussion

1282.	A reaction follows the given concentration (M)-time graph. The rate for this reaction at 20 seconds will be
Answer» A reaction follows the given concentration (M)-time graph. The rate for this reaction at 20 seconds will be

Discussion

1283.	Aqueous solution of HCl has the pH = 4. Its molarity would be
Answer» Aqueous solution of $H C l$ has the pH = 4. Its molarity would be

1283.

Aqueous solution of HCl has the pH = 4. Its molarity would be

Answer»

Aqueous solution of $H C l$ has the pH = 4. Its molarity would be

Discussion

1284.	A solution contains 58.5 g of common salt in 360 g of water. Calculate the total number of protons in the solution.
Answer» A solution contains $58.5 g$ of common salt in $360 g$ of water. Calculate the total number of protons in the solution.

Discussion

1285.	How many different functional groups are present in the sedative called thalidomide (structure given below)?
Answer» How many different functional groups are present in the sedative called thalidomide (structure given below)?

Discussion

1286.	A compound contain 25% hydrogen and 75% carbon by mass. The empirical formula of the compound is:
Answer» A compound contain 25% hydrogen and 75% carbon by mass. The empirical formula of the compound is:

Discussion

1287.	What volume of a 0.20 M KOH solution will exactly neutralize 15 mL of a 0.40 M HCl solution?
Answer» What volume of a $0.20 M K O H$ solution will exactly neutralize $15 mL$ of a $0.40 M H C l$ solution?

Discussion

1288.	In the metre bridge arrangement, an unknown resistance R1 is connected in series with resistance of 10 Ω. When the combination is connecetd to left gap of the meter bridge and R2 is connected to right gap, balance point from left end is at 50 cm. When 10 Ω resistor is removed, the balance point shifts to 40 cm. The value of R1 is
Answer» In the metre bridge arrangement, an unknown resistance $R_{1}$ is connected in series with resistance of $10 Ω$ . When the combination is connecetd to left gap of the meter bridge and $R_{2}$ is connected to right gap, balance point from left end is at $50 cm$ . When $10 Ω$ resistor is removed, the balance point shifts to $40 cm$ . The value of $R_{1}$ is

Discussion

1289.	Most ionic compounds have _____
Answer» Most ionic compounds have _____

Discussion

1290.	Paragraph for below questionनीचे दिये गये प्रश्न के लिए अनुच्छेदFor an electrode reaction:Mn+(aq.) + ne– → M(s)The electrode potential at any concentration measured with respect to standard hydrogen electrode can be represented by Nernst equation asE(Mn+/M)=Eo(Mn+/M)−RTnF ln[M][Mn+]but concentration of solid M is taken as unity so we have E(Mn+/M)=Eo(Mn+/M)−RTnF ln1[Mn+]नीचे दी गयी इलेक्ट्रॉड अभिक्रिया के लिए :Mn+(aq.) + ne– → M(s)किसी भी सांद्रता पर मानक हाइड्रोजन इलेक्ट्रॉड के सापेक्ष मापे गए इलेक्ट्रॉड विभव को नर्न्स्ट समीकरण द्वारा निम्न प्रकार प्रदर्शित किया जा सकता है :E(Mn+/M)=Eo(Mn+/M)−RTnF ln[M][Mn+]लेकिन ठोस M की सांद्रता को इकाई माना जाता है, अतः E(Mn+/M)=Eo(Mn+/M)−RTnF ln1[Mn+]Q. For given reaction of electrodeCl2(g) + 2e– → 2Cl–(aq.)Nernst equation is given asप्रश्न - दी गयी इलेक्ट्रॉड अभिक्रिया के लिएCl2(g) + 2e– → 2Cl–(aq.)नर्न्स्ट समीकरण को किस प्रकार दिया जाता है?
Answer» Paragraph for below question नीचे दिये गये प्रश्न के लिए अनुच्छेद For an electrode reaction: Mⁿ⁺(aq.) + ne^– → M(s) The electrode potential at any concentration measured with respect to standard hydrogen electrode can be represented by Nernst equation as $E_{(M^{n +} / M)} = E_{(M^{n +} / M)}^{o} - \frac{R T}{n F} l n \frac{[M]}{[M^{n +}]}$ but concentration of solid M is taken as unity so we have $E_{(M^{n +} / M)} = E_{(M^{n +} / M)}^{o} - \frac{R T}{n F} l n \frac{1}{[M^{n +}]}$ नीचे दी गयी इलेक्ट्रॉड अभिक्रिया के लिए : Mⁿ⁺(aq.) + ne^– → M(s) किसी भी सांद्रता पर मानक हाइड्रोजन इलेक्ट्रॉड के सापेक्ष मापे गए इलेक्ट्रॉड विभव को नर्न्स्ट समीकरण द्वारा निम्न प्रकार प्रदर्शित किया जा सकता है : $E_{(M^{n +} / M)} = E_{(M^{n +} / M)}^{o} - \frac{R T}{n F} l n \frac{[M]}{[M^{n +}]}$ लेकिन ठोस M की सांद्रता को इकाई माना जाता है, अतः $E_{(M^{n +} / M)} = E_{(M^{n +} / M)}^{o} - \frac{R T}{n F} l n \frac{1}{[M^{n +}]}$ Q. For given reaction of electrode Cl₂(g) + 2e^– → 2Cl^–(aq.) Nernst equation is given as प्रश्न - दी गयी इलेक्ट्रॉड अभिक्रिया के लिए Cl₂(g) + 2e^– → 2Cl^–(aq.) नर्न्स्ट समीकरण को किस प्रकार दिया जाता है?

1290.

Paragraph for below questionनीचे दिये गये प्रश्न के लिए अनुच्छेदFor an electrode reaction:Mn+(aq.) + ne– → M(s)The electrode potential at any concentration measured with respect to standard hydrogen electrode can be represented by Nernst equation asE(Mn+/M)=Eo(Mn+/M)−RTnF ln[M][Mn+]but concentration of solid M is taken as unity so we have E(Mn+/M)=Eo(Mn+/M)−RTnF ln1[Mn+]नीचे दी गयी इलेक्ट्रॉड अभिक्रिया के लिए :Mn+(aq.) + ne– → M(s)किसी भी सांद्रता पर मानक हाइड्रोजन इलेक्ट्रॉड के सापेक्ष मापे गए इलेक्ट्रॉड विभव को नर्न्स्ट समीकरण द्वारा निम्न प्रकार प्रदर्शित किया जा सकता है :E(Mn+/M)=Eo(Mn+/M)−RTnF ln[M][Mn+]लेकिन ठोस M की सांद्रता को इकाई माना जाता है, अतः E(Mn+/M)=Eo(Mn+/M)−RTnF ln1[Mn+]Q. For given reaction of electrodeCl2(g) + 2e– → 2Cl–(aq.)Nernst equation is given asप्रश्न - दी गयी इलेक्ट्रॉड अभिक्रिया के लिएCl2(g) + 2e– → 2Cl–(aq.)नर्न्स्ट समीकरण को किस प्रकार दिया जाता है?

Answer»

Paragraph for below question

नीचे दिये गये प्रश्न के लिए अनुच्छेद

For an electrode reaction:

Mⁿ⁺(aq.) + ne^– → M(s)

The electrode potential at any concentration measured with respect to standard hydrogen electrode can be represented by Nernst equation as

E_{(M^{n +} / M)} = E_{(M^{n +} / M)}^{o} - \frac{R T}{n F} l n \frac{[M]}{[M^{n +}]}

but concentration of solid M is taken as unity so we have

E_{(M^{n +} / M)} = E_{(M^{n +} / M)}^{o} - \frac{R T}{n F} l n \frac{1}{[M^{n +}]}

नीचे दी गयी इलेक्ट्रॉड अभिक्रिया के लिए :

Mⁿ⁺(aq.) + ne^– → M(s)

किसी भी सांद्रता पर मानक हाइड्रोजन इलेक्ट्रॉड के सापेक्ष मापे गए इलेक्ट्रॉड विभव को नर्न्स्ट समीकरण द्वारा निम्न प्रकार प्रदर्शित किया जा सकता है :

E_{(M^{n +} / M)} = E_{(M^{n +} / M)}^{o} - \frac{R T}{n F} l n \frac{[M]}{[M^{n +}]}

लेकिन ठोस M की सांद्रता को इकाई माना जाता है, अतः

E_{(M^{n +} / M)} = E_{(M^{n +} / M)}^{o} - \frac{R T}{n F} l n \frac{1}{[M^{n +}]}

Q. For given reaction of electrode

Cl₂(g) + 2e^– → 2Cl^–(aq.)

Nernst equation is given as

प्रश्न - दी गयी इलेक्ट्रॉड अभिक्रिया के लिए

Cl₂(g) + 2e^– → 2Cl^–(aq.)

नर्न्स्ट समीकरण को किस प्रकार दिया जाता है?

Discussion

1291.	A solid actsas an adsorbent because it has
Answer» A solid acts as an adsorbent because it has

Discussion

1292.	Which of the following, upon treatment with tert−BuONa followed by the addition of bromine water, fails to decolourize the colour of bromine?
Answer» Which of the following, upon treatment with $t e r t - B u O N a$ followed by the addition of bromine water, fails to decolourize the colour of bromine?

Discussion

1293.	Which of the following magnetic moment values will correspond to the highest ionization energy for Mn species?
Answer» Which of the following magnetic moment values will correspond to the highest ionization energy for Mn species?

Discussion

1294.	Following gaseous reaction is undergoing in a vessel C2H4 + H2 ⇌ C2H6; ΔH = −32.7Kcal. Which will increase the equilibrium concentration of C2H6 ?
Answer» Following gaseous reaction is undergoing in a vessel $C_{2} H_{4} + H_{2} ⇌ C_{2} H_{6}; Δ H = - 32.7 K c a l$ . Which will increase the equilibrium concentration of $C_{2} H_{6}$ ?

1294.

Following gaseous reaction is undergoing in a vessel C2H4 + H2 ⇌ C2H6; ΔH = −32.7Kcal. Which will increase the equilibrium concentration of C2H6 ?

Answer»

Following gaseous reaction is undergoing in a vessel $C_{2} H_{4} + H_{2} ⇌ C_{2} H_{6}; Δ H = - 32.7 K c a l$ . Which will increase the equilibrium concentration of $C_{2} H_{6}$ ?

Discussion

1295.	(CH3)3CMgCl on reaction with D2O produces :
Answer» (CH₃)₃CMgCl on reaction with D₂O produces :

Discussion

1296.	Which of the compound undergoes electrophilic substition most easily?
Answer» Which of the compound undergoes electrophilic substition most easily?

Discussion

1297.	Which of the following bond angle is not observed in PCl5 molecule in gaseous state?
Answer» Which of the following bond angle is not observed in $P C l_{5}$ molecule in gaseous state?

Discussion

1298.	If λ0 and λ are the threshold wavelength and the wavelength of incident light respectively, the velocity of the photoelectrons ejected from the metal surface is:
Answer» If $λ_{0}$ and $λ$ are the threshold wavelength and the wavelength of incident light respectively, the velocity of the photoelectrons ejected from the metal surface is:

Discussion

1299.	Which of the following options represents the correct bond order?
Answer» Which of the following options represents the correct bond order?

Discussion

1300.	The number of hydroxyl groups present in a sample of 1.8 g of α -D - Glucose are
Answer» The number of hydroxyl groups present in a sample of 1.8 g of α -D - Glucose are

Discussion

Explore topic-wise InterviewSolutions in .

Which of the following sets contain only copolymers?

The reaction of zinc with dilute nitric acid yields:

Choose the correct order of reagents to be added for the following conversion:C6H5CH2Cl(i)→C6H5CH2CN(ii)→C6H5CH2CH2NH2(iii)−→ΔC6H5CH2CH2NC

Same quantity of electricity is being used to liberate iodine (at anode) and a metal x (at cathode). The mass of x deposited is 0.6 g and the iodine is completely reduced by 50 cc of 0.1M sodium thiosulphate. Find the equivalent mass of x.

Find the change in internal energy of 60 g of Argon gas when its change in temperature is 200 K. (Given degree of freedom of argon is 3 and its molar mass = 40 g/mole)

Gasoline is obtained from crude petroleum oil by

A mixture containing 1.6 g of O2, 1.4 g of N2 and 0.4 g of He occupies a volume of 10 L at 27∘C. Calculate the partial pressure of each component of the mixture.

Find the number of electrons present in a pure sample of (NH4)2SO4 containing 8 moles of O-atoms?

Arrange in decreasing order of acid strength.HF,HCl,HBr,HI

Which of the following compounds is formed on ozonolysis followed by hydrolysis of but-2-ene?

Which of the following is non-benzenoid?

Purple of Cassius is

How does the graph of molar conductivity vs square root of concentration look like for NaCl?

3p orbital has _____ angular nodes

2Fe2O3.3H2O(s)Calcination−−−−−−−→A+3H2O(l)Find out A:

Glucose does not react with:

Which of the following reaction sequence(s) is/are suitable to convert acetone to methylamine?

3.0×10−3 kg of acetic acid is added to 500 mL of water. 23% of acetic acid is dissociated. If Kf and density of water are 1.86Kkgmol−1 and 0.997 g/mL respectively. The depression in freezing point of acetic acid is :

Which is most soluble in water?

For the reaction, N2(g)+3H2(g)⇌2NH3(g),△H is equal to :(△U = change in internal energy)

The products obtained when 2 - methyl propene is oxidized with acidic potassium permanganate is

0.7 g of iron reacts directly with 0.4 g of sulphur to form ferrous sulphide. If 2.8 g f iron dissolves in dilute HCl and excess of sodium sulphide solution is added, 4.4 g of iron sulphide is precipitated. If it obeys the law of constant composition, what is the ratio of weights of Fe : S ?

Which one of the following compounds undergoes Dehydrohalogenation to the maximum extent?

10g of a metal carbonate on heating gives 5.6 g of its oxide. The equivalent mass of the metal is ?

1 g of a gaseous compound of boron and hydrogen occupies 0.820 L at 1 atm and 3 ∘C. The compound is:(R=0.0820 L atm mol−1K−1; molar mass of H=1 g,B=10.8 g

Which of the following is the solution of the DE dydx=(3x+2y+4)2?

The major product formed is

Which of the following is/are example(s) of reduction?

H2O2 is used as

Aniline was first prepared by

A reaction follows the given concentration (M)-time graph. The rate for this reaction at 20 seconds will be

Aqueous solution of HCl has the pH = 4. Its molarity would be

A solution contains 58.5 g of common salt in 360 g of water. Calculate the total number of protons in the solution.

How many different functional groups are present in the sedative called thalidomide (structure given below)?

A compound contain 25% hydrogen and 75% carbon by mass. The empirical formula of the compound is:

What volume of a 0.20 M KOH solution will exactly neutralize 15 mL of a 0.40 M HCl solution?

Most ionic compounds have _____

A solid actsas an adsorbent because it has

Which of the following, upon treatment with tert−BuONa followed by the addition of bromine water, fails to decolourize the colour of bromine?

Which of the following magnetic moment values will correspond to the highest ionization energy for Mn species?

Following gaseous reaction is undergoing in a vessel C2H4 + H2 ⇌ C2H6; ΔH = −32.7Kcal. Which will increase the equilibrium concentration of C2H6 ?

(CH3)3CMgCl on reaction with D2O produces :

Which of the compound undergoes electrophilic substition most easily?

Which of the following bond angle is not observed in PCl5 molecule in gaseous state?

If λ0 and λ are the threshold wavelength and the wavelength of incident light respectively, the velocity of the photoelectrons ejected from the metal surface is:

Which of the following options represents the correct bond order?

The number of hydroxyl groups present in a sample of 1.8 g of α -D - Glucose are