46295 + Interview Questions in Chemistry Page 21 InterviewSolution

1001.	isomer is formed in major quantities during nitration of nitrobenzene.
Answer» isomer is formed in major quantities during nitration of nitrobenzene.

Discussion

1002.	Which is true for an element present in group 13 of the periodic table ?
Answer» Which is true for an element present in group 13 of the periodic table ?

Discussion

1003.	Convert the followingA:hexane to benzeneB:benzene to hexane
Answer» Convert the following A:hexane to benzene B:benzene to hexane

Discussion

1004.	46 What is the difference between Claissens Condensation and Claissen Schmidt Condensation?
Answer» 46 What is the difference between Claissens Condensation and Claissen Schmidt Condensation?

Discussion

1005.	no of electron proton neutron in phosphate ion
Answer» no of electron proton neutron in phosphate ion

Discussion

1006.	NH3 can be liquefied at ordinary temperature without the application of pressure, but O2 cannot, because
Answer» $N H_{3}$ can be liquefied at ordinary temperature without the application of pressure, but $O_{2}$ cannot, because

Discussion

1007.	In terms of thermodynamic Enthalpy, the synthesis of ozone from dioxygen is an __ process.
Answer» In terms of thermodynamic Enthalpy, the synthesis of ozone from dioxygen is an __ process.

Discussion

1008.	In the reaction sequence The major products X and Y, respectively, are
Answer» In the reaction sequence The major products X and Y, respectively, are

Discussion

1009.	Which one of the following will not form a yellow precipitate on heating with an alkaline solution of iodine?
Answer» Which one of the following will not form a yellow precipitate on heating with an alkaline solution of iodine?

Discussion

1010.	When Na2O2 and Water react, why does 2Na2O2 + 2H2O = 4NaOH + O2? Shouldn't it be Na2O2 + 2H2O = 2NaOH + H2O2
Answer» When Na₂O₂ and Water react, why does 2Na₂O₂+ 2H₂O = 4NaOH + O₂? Shouldn't it be Na₂O₂+ 2H₂O = 2NaOH + H₂O₂

Discussion

1011.	A+B⟶A3B2(unbalanced)A3B2+C⟶A3B2C2(unbalanced)Above two reactions are carried out by taking 3 moles each of A and B and one mole of C. Then which option is wrong
Answer» A+B $⟶$ $A_{3} B_{2}$ (unbalanced) $A_{3} B_{2}$ +C $⟶$ $A_{3} B_{2} C_{2}$ (unbalanced) Above two reactions are carried out by taking 3 moles each of A and B and one mole of C. Then which option is wrong

1011.

A+B⟶A3B2(unbalanced)A3B2+C⟶A3B2C2(unbalanced)Above two reactions are carried out by taking 3 moles each of A and B and one mole of C. Then which option is wrong

Answer»

A+B $⟶$ $A_{3} B_{2}$ (unbalanced) $A_{3} B_{2}$ +C $⟶$ $A_{3} B_{2} C_{2}$ (unbalanced)

Above two reactions are carried out by taking 3 moles each of A and B and one mole of C. Then which option is wrong

Discussion

1012.	Product (C) would be:
Answer» Product (C) would be:

Discussion

1013.	find Ph of a solution when 100 ml of 0.1 N hcl is mixed with 100 ml of 0.1 M nh4oh solution ( pka (nh4+)=9.3)a)4.65b)7 c)8.7 d)5.3
Answer» find Ph of a solution when 100 ml of 0.1 N hcl is mixed with 100 ml of 0.1 M nh4oh solution ( pka (nh4+)=9.3) a)4.65 b)7 c)8.7 d)5.3

Discussion

1014.	43. A : 30% solution of H2O2 is marketed as 100 volume hydrogen peroxide. R : 1 ml of 30% H2O2 solution will give 100 ml of oxygen at STP. why reason is not the correct explanation?
Answer» 43. A : 30% solution of H2O2 is marketed as 100 volume hydrogen peroxide. R : 1 ml of 30% H2O2 solution will give 100 ml of oxygen at STP. why reason is not the correct explanation?

Discussion

1015.	A radioactive substance (parent) decays to its daughter element, the age of radioactive substance (t) is related to the daughter (d)/parent (p) ratio by the equation:
Answer» A radioactive substance (parent) decays to its daughter element, the age of radioactive substance (t) is related to the daughter (d)/parent (p) ratio by the equation:

Discussion

1016.	On dissolving moderate amount of sodium metal in liquid NH3 at low temperature, which one of the following does not occur?
Answer» On dissolving moderate amount of sodium metal in liquid NH₃ at low temperature, which one of the following does not occur?

Discussion

1017.	The major product for the following reaction will be C6H6+ (CH3)3-COCl (anh AlCl3)=
Answer» The major product for the following reaction will be C6H6+ (CH3)3-COCl (anh AlCl3)=

Discussion

1018.	Which state of the triply ionized beryllium (Be3+) has the same orbit radius as that of the ground state of hydrogen atom?
Answer» Which state of the triply ionized beryllium $(B e^{3 +})$ has the same orbit radius as that of the ground state of hydrogen atom?

Discussion

1019.	For 10 min each, at 27∘C from two identical holes, nitrogen and an unknown gas are leaked into a common vessel of 3 L capacity. The resulting pressure is 4.18 bar and the mixture contains 0.4 mole of nitrogen gas. Thus, molar mass (in g) of the unknown gas is:
Answer» For 10 min each, at $27^{\circ} C$ from two identical holes, nitrogen and an unknown gas are leaked into a common vessel of $3 L$ capacity. The resulting pressure is 4.18 bar and the mixture contains 0.4 mole of nitrogen gas. Thus, molar mass $(in g)$ of the unknown gas is:

Discussion

1020.	An element X is divalent and another element Y is tetravalent. The compound formed by these two elements will be:
Answer» An element X is divalent and another element Y is tetravalent. The compound formed by these two elements will be:

Discussion

1021.	Give the nature of A and B in the given reaction. BKMnO4←−−−−−H+(CH3)3COHKMnO4/OH−−−−−−−−−−→A
Answer» Give the nature of A and B in the given reaction. $B K M n O_{4} \leftarrow ---- - H^{+} (C H_{3})_{3} C O H K M n O_{4} / O H^{-} - -------- \to A$

Discussion

1022.	For a gas sample with N∘ number of molecules, function N(V) is given by : N(V)=dNdV=(3N∘V3∘)V2 for 0<V<V∘and N(V)=0 for V>V∘where dN is the number of molecules in the speed range V to V+dV. If the rms speed of the molecules is √nV0.Then the value of n is
Answer» For a gas sample with $N_{\circ}$ number of molecules, function N(V) is given by : $N (V) = \frac{d N}{d V} = (\frac{3 N_{\circ}}{V_{\circ}^{3}}) V^{2} f o r 0 < V < V_{\circ} a n d N (V) = 0 f o r V > V_{\circ}$ where dN is the number of molecules in the speed range $V t o V + d V$ . If the rms speed of the molecules is $\sqrt{n} V_{0}$ .Then the value of $n$ is

Discussion

1023.	17. Number of moles of oxygen atoms present in 360 mg of glucose is
Answer» 17. Number of moles of oxygen atoms present in 360 mg of glucose is

Discussion

1024.	Among the following substituted silanes, the one which is used to terminate the process of silicone polymerization on hydrolysis to control its length is
Answer» Among the following substituted silanes, the one which is used to terminate the process of silicone polymerization on hydrolysis to control its length is

Discussion

1025.	For the reaction of one mole of zinc dust with one mole of sulphuric acid in a bomb calorimeter, ΔU and W correspond to
Answer» For the reaction of one mole of zinc dust with one mole of sulphuric acid in a bomb calorimeter, $Δ U$ and W correspond to

Discussion

1026.	The increased tendency for complex formation in transition metals can be attributed to
Answer» The increased tendency for complex formation in transition metals can be attributed to

Discussion

1027.	For what type of reaction, the rate constant will have the same unit as the rate of a reaction:
Answer» For what type of reaction, the rate constant will have the same unit as the rate of a reaction:

Discussion

1028.	Which type of hydrocarbons are alkenes and alkynes?
Answer» Which type of hydrocarbons are alkenes and alkynes?

Discussion

1029.	The vapour pressure of pure benzene is 160 mm, toluene is 60 mm. If they are mixed in the ratio of equal mass, then what will be the mole fraction of benene in vapour phase.
Answer» The vapour pressure of pure benzene is 160 mm, toluene is 60 mm. If they are mixed in the ratio of equal mass, then what will be the mole fraction of benene in vapour phase.

Discussion

1030.	The most reactive towards SN1 is:
Answer» The most reactive towards $S_{N} 1$ is:

Discussion

1031.	Value of entropy change for non ideal soln showing negative deviation from raoult's law
Answer» Value of entropy change for non ideal soln showing negative deviation from raoult's law

Discussion

1032.	The correct product of the following reaction is :
Answer» The correct product of the following reaction is :

Discussion

1033.

A student heats some amount of tap water in a calorimeter to a temperature of nearly 50ºC above the room temperature. He then records the temperature of this water as it is cooling down at regular intervals of 2 minutes each. He tabulates his observations as follows : Time (in minutes) → 0 2 4 6 8 10 Temperature (in ºC) → t1 t2 t3 t4 t5 t6 He is likely to observe that :(1) (t1 − t2) > (t3 − t4) > (t5 − t6)(2) (t1 − t2) = (t3 − t4) = (t5 − t6)(3) (t1 − t2) < (t3 − t4) < (t5 − t6)(4) (t1 − t2) < (t3 − t4) > (t5 − t6)

Answer» A student heats some amount of tap water in a calorimeter to a temperature of nearly 50ºC above the room temperature. He then records the temperature of this water as it is cooling down at regular intervals of 2 minutes each. He tabulates his observations as follows :

Time (in minutes) →	0	2	4	6	8	10
Temperature (in ºC) →	t₁	t₂	t₃	t₄	t₅	t₆

He is likely to observe that :

(1) (t₁− t₂) > (t₃−t₄) > (t₅ − t₆)

(2) (t₁− t₂) = (t₃−t₄) = (t₅ − t₆)

(3) (t₁− t₂) < (t₃−t₄) < (t₅ − t₆)

(4) (t₁− t₂) < (t₃−t₄) > (t₅ − t₆)

Discussion

1034.	ntgive the reason for the followingn ntbenzene diazonium salts undergoes ArSN1 mechanism whereasn ntchlorobenzene & benzene sulphonic acid follow ArSN2 mechanismn
Answer» ntgive the reason for the followingn ntbenzene diazonium salts undergoes ArSN1 mechanism whereasn ntchlorobenzene & benzene sulphonic acid follow ArSN2 mechanismn

Discussion

1035.	The Complex CoCl3.5NH3 is aqueous solution ionizes to give a total number of ions equal to A) 0 B)2 C)3 D)4
Answer» The Complex CoCl3.5NH3 is aqueous solution ionizes to give a total number of ions equal to A) 0 B)2 C)3 D)4

Discussion

1036.	Which of the following is insoluble bin dilute HCl1) SnCl22) PbCl23) CdCl24) BiOCl
Answer» Which of the following is insoluble bin dilute HCl 1) SnCl2 2) PbCl2 3) CdCl2 4) BiOCl

Discussion

1037.	Which of the following products are expected from the solvolysis of bromomethyl cyclopentane?
Answer» Which of the following products are expected from the solvolysis of bromomethyl cyclopentane?

Discussion

1038.	S+O2→SO2 (Yield = 80%)SO2+Cl2+2H2O→H2SO4+2HCl (Yield = 60%)H2SO4+BaCl2→BaSO4+2HCl (Yield = 30%)8 g of Sulphur is burnt to form SO2, which is oxidized by Cl2 water. The solution is then treated with BaCl2 solution. The amount of BaSO4 precipitated is:(Molar mass of Barium = 137 g/mol)
Answer» $S + O_{2} \to S O_{2} (Yield = 80%)$ $S O_{2} + C l_{2} + 2 H_{2} O \to H_{2} S O_{4} + 2 H C l (Yield = 60%)$ $H_{2} S O_{4} + B a C l_{2} \to B a S O_{4} + 2 H C l (Yield = 30%)$ 8 g of Sulphur is burnt to form $S O_{2}$ , which is oxidized by $C l_{2}$ water. The solution is then treated with $B a C l_{2}$ solution. The amount of $B a S O_{4}$ precipitated is: (Molar mass of Barium = $137 g/mol$ )

Discussion

1039.	the energy of activation of a forward reaction is 60 kcal the energy of activation of its backward reaction is
Answer» the energy of activation of a forward reaction is 60 kcal the energy of activation of its backward reaction is

Discussion

1040.	At extremely low pressure van der Waal’s equation can be expressed as
Answer» At extremely low pressure van der Waal’s equation can be expressed as

Discussion

1041.	The volume of gases evolved by passing 0.965 ampere current for 10 hours through an aqueous solution of CH3COONa at STP.
Answer» The volume of gases evolved by passing $0.965$ ampere current for $10$ hours through an aqueous solution of $C H_{3} C O O N a$ at STP.

Discussion

1042.	51.How much magnesium sulphide can be obtained from 2.00g of magnesium and 2.00g of sulphur by the reaction Mg+s-Mgs? Which is the limiting agent? Calculate the amount of one of the reactants which remains unreached.
Answer» 51.How much magnesium sulphide can be obtained from 2.00g of magnesium and 2.00g of sulphur by the reaction Mg+s-Mgs? Which is the limiting agent? Calculate the amount of one of the reactants which remains unreached.

Discussion

1043.	At 450 K, Kp= 2.0 × 1010/bar for the given reaction at equilibrium.What is Kc at this temperature?
Answer» At 450 K, K_p= 2.0 × 10¹⁰/bar for the given reaction at equilibrium. What is K_cat this temperature?

1043.

At 450 K, Kp= 2.0 × 1010/bar for the given reaction at equilibrium.What is Kc at this temperature?

Answer»

At 450 K, K_p= 2.0 × 10¹⁰/bar for the given reaction at equilibrium.

What is K_cat this temperature?

Discussion

1044.	What is the expected final product from the following curtius rearrangement?
Answer» What is the expected final product from the following curtius rearrangement?

Discussion

1045.	Salicyclic acid is treated with bromine under two different conditions.Predict the nature of [X] and [Y] in the above reactions
Answer» Salicyclic acid is treated with bromine under two different conditions. Predict the nature of [X] and [Y] in the above reactions

Discussion

1046.	If two charges repel each other then how in proton more than two positively charged particle is stable?
Answer» If two charges repel each other then how in proton more than two positively charged particle is stable?

Discussion

1047.	49 Why rotation about C-C bond takes place when a triplet carbene reacts with an alkene?
Answer» 49 Why rotation about C-C bond takes place when a triplet carbene reacts with an alkene?

Discussion

1048.	What is mole fraction? What is oxidation number?
Answer» What is mole fraction? What is oxidation number?

1048.

What is mole fraction? What is oxidation number?

Answer»

What is mole fraction?

What is oxidation number?

Discussion

1049.	Which of the following structures and IUPAC names are incorrectly matched?
Answer» Which of the following structures and IUPAC names are incorrectly matched?

Discussion

1050.	Why does red light scatter the least?
Answer» Why does red light scatter the least?

Discussion

Explore topic-wise InterviewSolutions in .

isomer is formed in major quantities during nitration of nitrobenzene.

Which is true for an element present in group 13 of the periodic table ?

Convert the followingA:hexane to benzeneB:benzene to hexane

46 What is the difference between Claissens Condensation and Claissen Schmidt Condensation?

no of electron proton neutron in phosphate ion

NH3 can be liquefied at ordinary temperature without the application of pressure, but O2 cannot, because

In terms of thermodynamic Enthalpy, the synthesis of ozone from dioxygen is an __ process.

In the reaction sequence The major products X and Y, respectively, are

Which one of the following will not form a yellow precipitate on heating with an alkaline solution of iodine?

When Na2O2 and Water react, why does 2Na2O2 + 2H2O = 4NaOH + O2? Shouldn't it be Na2O2 + 2H2O = 2NaOH + H2O2

A+B⟶A3B2(unbalanced)A3B2+C⟶A3B2C2(unbalanced)Above two reactions are carried out by taking 3 moles each of A and B and one mole of C. Then which option is wrong

Product (C) would be:

find Ph of a solution when 100 ml of 0.1 N hcl is mixed with 100 ml of 0.1 M nh4oh solution ( pka (nh4+)=9.3)a)4.65b)7 c)8.7 d)5.3

43. A : 30% solution of H2O2 is marketed as 100 volume hydrogen peroxide. R : 1 ml of 30% H2O2 solution will give 100 ml of oxygen at STP. why reason is not the correct explanation?

A radioactive substance (parent) decays to its daughter element, the age of radioactive substance (t) is related to the daughter (d)/parent (p) ratio by the equation:

On dissolving moderate amount of sodium metal in liquid NH3 at low temperature, which one of the following does not occur?

The major product for the following reaction will be C6H6+ (CH3)3-COCl (anh AlCl3)=

Which state of the triply ionized beryllium (Be3+) has the same orbit radius as that of the ground state of hydrogen atom?

For 10 min each, at 27∘C from two identical holes, nitrogen and an unknown gas are leaked into a common vessel of 3 L capacity. The resulting pressure is 4.18 bar and the mixture contains 0.4 mole of nitrogen gas. Thus, molar mass (in g) of the unknown gas is:

An element X is divalent and another element Y is tetravalent. The compound formed by these two elements will be:

Give the nature of A and B in the given reaction. BKMnO4←−−−−−H+(CH3)3COHKMnO4/OH−−−−−−−−−−→A

For a gas sample with N∘ number of molecules, function N(V) is given by : N(V)=dNdV=(3N∘V3∘)V2 for 0&lt;V&lt;V∘and N(V)=0 for V&gt;V∘where dN is the number of molecules in the speed range V to V+dV. If the rms speed of the molecules is √nV0.Then the value of n is

17. Number of moles of oxygen atoms present in 360 mg of glucose is

Among the following substituted silanes, the one which is used to terminate the process of silicone polymerization on hydrolysis to control its length is

For the reaction of one mole of zinc dust with one mole of sulphuric acid in a bomb calorimeter, ΔU and W correspond to

The increased tendency for complex formation in transition metals can be attributed to

For what type of reaction, the rate constant will have the same unit as the rate of a reaction:

Which type of hydrocarbons are alkenes and alkynes?

The vapour pressure of pure benzene is 160 mm, toluene is 60 mm. If they are mixed in the ratio of equal mass, then what will be the mole fraction of benene in vapour phase.

The most reactive towards SN1 is:

Value of entropy change for non ideal soln showing negative deviation from raoult's law

The correct product of the following reaction is :

ntgive the reason for the followingn ntbenzene diazonium salts undergoes ArSN1 mechanism whereasn ntchlorobenzene & benzene sulphonic acid follow ArSN2 mechanismn

The Complex CoCl3.5NH3 is aqueous solution ionizes to give a total number of ions equal to A) 0 B)2 C)3 D)4

Which of the following is insoluble bin dilute HCl1) SnCl22) PbCl23) CdCl24) BiOCl

Which of the following products are expected from the solvolysis of bromomethyl cyclopentane?

S+O2→SO2 (Yield = 80%)SO2+Cl2+2H2O→H2SO4+2HCl (Yield = 60%)H2SO4+BaCl2→BaSO4+2HCl (Yield = 30%)8 g of Sulphur is burnt to form SO2, which is oxidized by Cl2 water. The solution is then treated with BaCl2 solution. The amount of BaSO4 precipitated is:(Molar mass of Barium = 137 g/mol)

the energy of activation of a forward reaction is 60 kcal the energy of activation of its backward reaction is

At extremely low pressure van der Waal’s equation can be expressed as

The volume of gases evolved by passing 0.965 ampere current for 10 hours through an aqueous solution of CH3COONa at STP.

51.How much magnesium sulphide can be obtained from 2.00g of magnesium and 2.00g of sulphur by the reaction Mg+s-Mgs? Which is the limiting agent? Calculate the amount of one of the reactants which remains unreached.

At 450 K, Kp= 2.0 × 1010/bar for the given reaction at equilibrium.What is Kc at this temperature?

What is the expected final product from the following curtius rearrangement?

Salicyclic acid is treated with bromine under two different conditions.Predict the nature of [X] and [Y] in the above reactions

If two charges repel each other then how in proton more than two positively charged particle is stable?

49 Why rotation about C-C bond takes place when a triplet carbene reacts with an alkene?

What is mole fraction? What is oxidation number?

Which of the following structures and IUPAC names are incorrectly matched?

Why does red light scatter the least?

For a gas sample with N∘ number of molecules, function N(V) is given by : N(V)=dNdV=(3N∘V3∘)V2 for 0<V<V∘and N(V)=0 for V>V∘where dN is the number of molecules in the speed range V to V+dV. If the rms speed of the molecules is √nV0.Then the value of n is