46295 + Interview Questions in Chemistry Page 51 InterviewSolution

2501.	Can you tell me the general method to find the position of an element in the periodic table whose atomic number is given .
Answer» Can you tell me the general method to find the position of an element in the periodic table whose atomic number is given .

Discussion

2502.	What is true colour of real H_2O ? Is it colourless or having slightly blue colour
Answer» What is true colour of real H_2O ? Is it colourless or having slightly blue colour

Discussion

2503.	Why do people vomit when they intake alcohol in major quantity?
Answer» Why do people vomit when they intake alcohol in major quantity?

Discussion

2504.	7. Reduction of cyclohex-2-enone with aluminum isopropoxide in excess of isopropyl alcohol will produce?
Answer» 7. Reduction of cyclohex-2-enone with aluminum isopropoxide in excess of isopropyl alcohol will produce?

Discussion

2505.	In the following sequence of reactions: Toluene KMnO4−−−−−→ASOCl2−−−−→BH2/Pd−−−−→BaSO4C, the product C is:
Answer» In the following sequence of reactions: Toluene $K M n O_{4} - ---- \to A S O C l_{2} - --- \to B H_{2} / P d - --- \to B a S O_{4} C,$ the product C is:

Discussion

2506.	94. Second coordination number of Face Centered Cubic Cell ?
Answer» 94. Second coordination number of Face Centered Cubic Cell ?

Discussion

2507.	The first, second and third ionisation energies of Al are 578, 1817 and 2745 kJ mol^{-1} respectively. Calculate the energy required to convert all the atoms of Al to Al^{+3} present in 270 mg of Al vapours 1)51.40k
Answer» The first, second and third ionisation energies of Al are 578, 1817 and 2745 kJ mol^{-1} respectively. Calculate the energy required to convert all the atoms of Al to Al^{+3} present in 270 mg of Al vapours 1)51.40k

Discussion

2508.	What are mixture
Answer» What are mixture

Discussion

2509.	Which is the Molecule with highest dipole moment? a) CH3Cl or b) CHCl3 How to find out?
Answer» Which is the Molecule with highest dipole moment? a) CH₃Cl or b) CHCl₃ How to find out?

Discussion

2510.	No.of atoms in 8 g of oxygen
Answer» No.of atoms in 8 g of oxygen

Discussion

2511.	Calculate the energy required to excite 2.46 L of hydrogen gas at 1 atm and 300 K to the first excited state of atomic hydrogen. The energy of dissociation of H−H bonds is 436 kJ mol−1 (Given : R=0.082 L atm K−1 mol−1, Energy of ground state of H− atom =−1312 kJ mol−1)
Answer» Calculate the energy required to excite $2.46 L$ of hydrogen gas at $1 atm$ and $300 K$ to the first excited state of atomic hydrogen. The energy of dissociation of $H - H$ bonds is $436 {kJ mol}^{- 1}$ (Given : $R = 0.082 {L atm K}^{- 1} {mol}^{- 1}$ , Energy of ground state of $H -$ atom $= - 1312 {kJ mol}^{- 1}$ )

Discussion

2512.	In a 10 litre vessel, the total pressure of a gaseous mixture containing H2,N2andCO2 is 9.8 atm, The partial pressures of H2 and N2 are 3.7 and 4.2 atm respectively. Find the partial pressure of CO2 .
Answer» In a 10 litre vessel, the total pressure of a gaseous mixture containing $H_{2}, N_{2} a n d C O_{2}$ is 9.8 atm, The partial pressures of $H_{2} a n d N_{2}$ are 3.7 and 4.2 atm respectively. Find the partial pressure of $C O_{2}$ .

Discussion

2513.	The orbital angular momentum of an electron in 2s− orbital is
Answer» The orbital angular momentum of an electron in 2 $s^{-}$ orbital is

Discussion

2514.	The resistance of a solution ′A′ is 40 ohm and that of solution ′B′ is 70 ohm, both solutions being taken in the same conductivity cell. If equal volumes of solutions ′A′ and ′B′ are mixed, what will be the resistance of the mixture using the same cell ? (Assume that there is no increase in the degree of dissociation of ′A′ and ′B′ on mixing)
Answer» The resistance of a solution $^{'} A^{'}$ is $40 o h m$ and that of solution $^{'} B^{'}$ is $70 o h m$ , both solutions being taken in the same conductivity cell. If equal volumes of solutions $^{'} A^{'}$ and $^{'} B^{'}$ are mixed, what will be the resistance of the mixture using the same cell ? (Assume that there is no increase in the degree of dissociation of $^{'} A^{'}$ and $^{'} B^{'}$ on mixing)

Discussion

2515.	Arrhenius neutralization is described as
Answer» Arrhenius neutralization is described as

Discussion

2516.	Phenol Zn−−→dustXCH3Cl−−−−−−−→anhyd′AlCl3YAlK−−−−−→KMnO4Z the product Z is
Answer» Phenol $Z n - - \to d u s t X C H_{3} C l - ------ \to a n h y d^{'} A l C l_{3} Y A l K - ---- \to K M n O_{4} Z$ the product Z is

Discussion

2517.	One mole of P4 molecules contains
Answer» One mole of $P_{4}$ molecules contains

Discussion

2518.	Which of the following is not an example of disproportionation reaction?
Answer» Which of the following is not an example of disproportionation reaction?

Discussion

2519.	which of the following values of equilibrium constant predict almost completion of reaction1] 10'^-2 2]10^0 3]10 4]10^4
Answer» which of the following values of equilibrium constant predict almost completion of reaction 1] 10'^-2 2]10^0 3]10 4]10^4

Discussion

2520.	Aluminium trifluoride is insoluble in anhydrous HF but dissolves on addition of NaF. Aluminium trifluoride precipitates out of the resulting solution when gaseous BF3 is bubbled through. Give reasons.
Answer» Aluminium trifluoride is insoluble in anhydrous HF but dissolves on addition of NaF. Aluminium trifluoride precipitates out of the resulting solution when gaseous $B F_{3}$ is bubbled through. Give reasons.

Discussion

2521.	The enthalpy of formation of methane at constant pressure and 300 K is – 78.84 KJ. The enthalpy of formation at constant volume is:
Answer» The enthalpy of formation of methane at constant pressure and 300 K is – 78.84 KJ. The enthalpy of formation at constant volume is:

Discussion

2522.	what will be the structure of graphite?
Answer» what will be the structure of graphite?

Discussion

2523.	On reductive ozonolysis of the product obtained by treating pent-2-yne with Lindlar's catalyst gives two compounds. The molecular mass (in g/mol) of the compound having the lowest carbon atom(s) is
Answer» On reductive ozonolysis of the product obtained by treating pent-2-yne with Lindlar's catalyst gives two compounds. The molecular mass (in g/mol) of the compound having the lowest carbon atom(s) is

Discussion

2524.	what is the full form of each variable in the formula of electromaganetic force
Answer» what is the full form of each variable in the formula of electromaganetic force

Discussion

2525.	why chelate ligand more stable than monodentate ligand
Answer» why chelate ligand more stable than monodentate ligand

Discussion

2526.	18.A helium nucleus makes a full rotation in a circle of radius 0.8 m in 2 seconds. The value of manetic field B at the centre of circle is:
Answer» 18.A helium nucleus makes a full rotation in a circle of radius 0.8 m in 2 seconds. The value of manetic field B at the centre of circle is:

Discussion

2527.	Why we choose H2 as 1mole rather than only H as 1mole of hydrogen,is because it is written like halogens in "X2" form ?
Answer» Why we choose H2 as 1mole rather than only H as 1mole of hydrogen,is because it is written like halogens in "X2" form ?

Discussion

2528.	The compounds (C) and (F) are respectively.
Answer» The compounds (C) and (F) are respectively.

Discussion

2529.	density of earth
Answer» density of earth

Discussion

2530.	Given is the graph of Maxwell-Boltzmann distribution of molecular velocities.Which of the option is correct?
Answer» Given is the graph of Maxwell-Boltzmann distribution of molecular velocities. Which of the option is correct?

Discussion

2531.	Which of the following cycloalkanes involves maximum torsional strain?
Answer» Which of the following cycloalkanes involves maximum torsional strain?

Discussion

2532.	What is the major product of the reaction shown?
Answer» What is the major product of the reaction shown?

2532.

What is the major product of the reaction shown?

Answer»

What is the major product of the reaction shown?

Discussion

2533.	Vicinal and geminal dihalides are not distinguished by:
Answer» Vicinal and geminal dihalides are not distinguished by:

Discussion

2534.	Where is Dinitrogen tetraoxide used as a reagent?
Answer» Where is Dinitrogen tetraoxide used as a reagent?

Discussion

2535.	consider following nuclear reaction {}_b^aA\xrightarrow{-1α}B\xrightarrow{-2β}C a)A and B are isotopes b)A and C are isobars c)A and C are isotopes d)A and C are ispdiaphers
Answer» consider following nuclear reaction {}_b^aA\xrightarrow{-1α}B\xrightarrow{-2β}C a)A and B are isotopes b)A and C are isobars c)A and C are isotopes d)A and C are ispdiaphers

Discussion

2536.	Which of the following will not show geometrical isomerism? (1) CH_3CH=CHCH_3 (2) CH_3CH_2CH=CH_3 (3) CH_3CH=N-OH (4) (CH_3)_2C=CHCH_3.
Answer» Which of the following will not show geometrical isomerism? (1) CH_3CH=CHCH_3 (2) CH_3CH_2CH=CH_3 (3) CH_3CH=N-OH (4) (CH_3)_2C=CHCH_3.

Discussion

2537.	tan20°43'÷cot69°17'
Answer» tan20°43'÷cot69°17'

Discussion

2538.	How to find n factor of SO2 ?
Answer» How to find n factor of SO2 ?

Discussion

2539.	For the combustion of 1 mole of liquid benzene at 25∘C, the heat of the reaction at constant pressure is given by,C6H6(l)+712O2(g)⟶6CO2(g)+3H2O(l)ΔH=−780980 calWhat would be the heat of the reaction at constant volume?
Answer» For the combustion of 1 mole of liquid benzene at $25^{\circ} C$ , the heat of the reaction at constant pressure is given by, $C_{6} H_{6} (l) + 7 \frac{1}{2} O_{2} (g) ⟶ 6 C O_{2} (g) + 3 H_{2} O (l)$ $Δ H = - 780980 c a l$ What would be the heat of the reaction at constant volume?

Discussion

2540.	Reaction of ethanol with conc. Sulphuric acid at 170∘C produces a gas which is then treated with bromine in carbon tetrachloride. The major product obtained in this reaction is :
Answer» Reaction of ethanol with conc. Sulphuric acid at 170 $^{\circ}$ C produces a gas which is then treated with bromine in carbon tetrachloride. The major product obtained in this reaction is :

Discussion

2541.	In a first order reaction the concentration of reactant decreases from 800 mol/dm3 to 50 mol/dm3 in 2×104 s. The rate constant of reaction in s−1 is:
Answer» In a first order reaction the concentration of reactant decreases from $800 m o l / d m^{3}$ to $50 m o l / d m^{3}$ in $2 \times 10^{4} s$ . The rate constant of reaction in $s^{- 1}$ is:

Discussion

2542.	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 $C_{2} H_{6}$ ?

2542.

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

2543.	Name 3 polyatomic anions and polyatomic cations
Answer» Name 3 polyatomic anions and polyatomic cations

Discussion

2544.	When 0.1 mol MnO4^2- is oxidised the quantity of electricity required to completely oxidise MnO4^2- to MnO4- is a) 96500 Cb) 2 X 96500 Cc) 9650 C d) 96.50 C
Answer» When 0.1 mol MnO4^2- is oxidised the quantity of electricity required to completely oxidise MnO4^2- to MnO4- is a) 96500 C b) 2 X 96500 C c) 9650 C d) 96.50 C

Discussion

2545.	At 30∘C,Kp for the dissociation reaction:SO2Cl2 (g)⇋ SO2 (g) + Cl2 (g) is 2.9x 10−2~atm. If the total pressure is 1 atm, the degree of dissociation of SO2Cl2 is (assume 1−α2 =1)
Answer» At $30^{\circ} C, K_{p}$ for the dissociation reaction: $S O_{2} C l_{2} (g) ⇋ S O_{2} (g) + C l_{2} (g) i s 2.9 x 10^{- 2}$ ~atm. If the total pressure is 1 atm, the degree of dissociation of $S O_{2} C l_{2} i s (a s s u m e 1 - α^{2} = 1)$

Discussion

2546.	Choose correct order of their stability.
Answer» Choose correct order of their stability.

Discussion

2547.	Which of the following exhibits only +3 oxidation state?
Answer» Which of the following exhibits only +3 oxidation state?

Discussion

2548.	2^1/2 = 2^k find k
Answer» 2^1/2 = 2^k find k

Discussion

2549.	The hybridization state of Carbon in diamond is:
Answer» The hybridization state of Carbon in diamond is:

Discussion

2550.	9. What is definition of pseudo first order reaction?
Answer» 9. What is definition of pseudo first order reaction?

Discussion

Explore topic-wise InterviewSolutions in .

Can you tell me the general method to find the position of an element in the periodic table whose atomic number is given .

What is true colour of real H_2O ? Is it colourless or having slightly blue colour

Why do people vomit when they intake alcohol in major quantity?

7. Reduction of cyclohex-2-enone with aluminum isopropoxide in excess of isopropyl alcohol will produce?

In the following sequence of reactions: Toluene KMnO4−−−−−→ASOCl2−−−−→BH2/Pd−−−−→BaSO4C, the product C is:

94. Second coordination number of Face Centered Cubic Cell ?

The first, second and third ionisation energies of Al are 578, 1817 and 2745 kJ mol^{-1} respectively. Calculate the energy required to convert all the atoms of Al to Al^{+3} present in 270 mg of Al vapours 1)51.40k

What are mixture

Which is the Molecule with highest dipole moment? a) CH3Cl or b) CHCl3 How to find out?

No.of atoms in 8 g of oxygen

Calculate the energy required to excite 2.46 L of hydrogen gas at 1 atm and 300 K to the first excited state of atomic hydrogen. The energy of dissociation of H−H bonds is 436 kJ mol−1 (Given : R=0.082 L atm K−1 mol−1, Energy of ground state of H− atom =−1312 kJ mol−1)

In a 10 litre vessel, the total pressure of a gaseous mixture containing H2,N2andCO2 is 9.8 atm, The partial pressures of H2 and N2 are 3.7 and 4.2 atm respectively. Find the partial pressure of CO2 .

The orbital angular momentum of an electron in 2s− orbital is

Arrhenius neutralization is described as

Phenol Zn−−→dustXCH3Cl−−−−−−−→anhyd′AlCl3YAlK−−−−−→KMnO4Z the product Z is

One mole of P4 molecules contains

Which of the following is not an example of disproportionation reaction?

which of the following values of equilibrium constant predict almost completion of reaction1] 10'^-2 2]10^0 3]10 4]10^4

Aluminium trifluoride is insoluble in anhydrous HF but dissolves on addition of NaF. Aluminium trifluoride precipitates out of the resulting solution when gaseous BF3 is bubbled through. Give reasons.

The enthalpy of formation of methane at constant pressure and 300 K is – 78.84 KJ. The enthalpy of formation at constant volume is:

what will be the structure of graphite?

On reductive ozonolysis of the product obtained by treating pent-2-yne with Lindlar's catalyst gives two compounds. The molecular mass (in g/mol) of the compound having the lowest carbon atom(s) is

what is the full form of each variable in the formula of electromaganetic force

why chelate ligand more stable than monodentate ligand

18.A helium nucleus makes a full rotation in a circle of radius 0.8 m in 2 seconds. The value of manetic field B at the centre of circle is:

Why we choose H2 as 1mole rather than only H as 1mole of hydrogen,is because it is written like halogens in "X2" form ?

The compounds (C) and (F) are respectively.

density of earth

Given is the graph of Maxwell-Boltzmann distribution of molecular velocities.Which of the option is correct?

Which of the following cycloalkanes involves maximum torsional strain?

What is the major product of the reaction shown?

Vicinal and geminal dihalides are not distinguished by:

Where is Dinitrogen tetraoxide used as a reagent?

consider following nuclear reaction {}_b^aA\xrightarrow{-1α}B\xrightarrow{-2β}C a)A and B are isotopes b)A and C are isobars c)A and C are isotopes d)A and C are ispdiaphers

Which of the following will not show geometrical isomerism? (1) CH_3CH=CHCH_3 (2) CH_3CH_2CH=CH_3 (3) CH_3CH=N-OH (4) (CH_3)_2C=CHCH_3.

tan20°43'÷cot69°17'

How to find n factor of SO2 ?

For the combustion of 1 mole of liquid benzene at 25∘C, the heat of the reaction at constant pressure is given by,C6H6(l)+712O2(g)⟶6CO2(g)+3H2O(l)ΔH=−780980 calWhat would be the heat of the reaction at constant volume?

Reaction of ethanol with conc. Sulphuric acid at 170∘C produces a gas which is then treated with bromine in carbon tetrachloride. The major product obtained in this reaction is :

In a first order reaction the concentration of reactant decreases from 800 mol/dm3 to 50 mol/dm3 in 2×104 s. The rate constant of reaction in s−1 is:

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

Name 3 polyatomic anions and polyatomic cations

When 0.1 mol MnO4^2- is oxidised the quantity of electricity required to completely oxidise MnO4^2- to MnO4- is a) 96500 Cb) 2 X 96500 Cc) 9650 C d) 96.50 C

At 30∘C,Kp for the dissociation reaction:SO2Cl2 (g)⇋ SO2 (g) + Cl2 (g) is 2.9x 10−2~atm. If the total pressure is 1 atm, the degree of dissociation of SO2Cl2 is (assume 1−α2 =1)

Choose correct order of their stability.

Which of the following exhibits only +3 oxidation state?

2^1/2 = 2^k find k

The hybridization state of Carbon in diamond is:

9. What is definition of pseudo first order reaction?