46295 + Interview Questions in Chemistry Page 7 InterviewSolution

301.	what is the hybridisation involved in \lbrack Co(C_2O_4)_3\rbrack^{3-} and how
Answer» what is the hybridisation involved in \lbrack Co(C_2O_4)_3\rbrack^{3-} and how

Discussion

302.	What is radical sign in exponents and power
Answer» What is radical sign in exponents and power

Discussion

303.	25. What will be the product if (CH3)2-CH-CHO undergoes cannizzaro reaction ?
Answer» 25. What will be the product if (CH3)2-CH-CHO undergoes cannizzaro reaction ?

Discussion

304.	Butyric acid contains only C,H and O.a4.24 mg sample of butyric acid is completely burned. It gives 8.45 mg of CO2 and 3.46 mg of H2O .The molecular mass of butyric acid was determined by experiment to be 88 amu.What is molecular formula?
Answer» Butyric acid contains only C,H and O.a4.24 mg sample of butyric acid is completely burned. It gives 8.45 mg of CO2 and 3.46 mg of H2O .The molecular mass of butyric acid was determined by experiment to be 88 amu.What is molecular formula?

Discussion

305.	Give NO.and structure of possible strucutral isomers of C3H6O
Answer» Give NO.and structure of possible strucutral isomers of C3H6O

Discussion

306.	methanol will have 4 covalent bonds?is it right or wrong
Answer» methanol will have 4 covalent bonds?is it right or wrong

Discussion

307.	Which of the following is a primary amine:
Answer» Which of the following is a primary amine:

Discussion

308.	At 300 K, the vapour pressure of an ideal solution that has 3 mol A and 2 mol B is 600 torr. At the same temperature, if 1.5 mol A & 0.5 mol C (non-volatile) are added to this solution, the vapour pressure of the solution increases by 30 torr. Then, what is the value of P∘B?
Answer» At $300 K$ , the vapour pressure of an ideal solution that has 3 mol A and 2 mol B is $600 t o r r$ . At the same temperature, if $1.5$ mol A & $0.5$ mol C (non-volatile) are added to this solution, the vapour pressure of the solution increases by 30 torr. Then, what is the value of $P_{B}^{\circ}$ ?

Discussion

309.	what is the total number of elements of symmetry in a cubic crystal? how to find out for any other crystal?
Answer» what is the total number of elements of symmetry in a cubic crystal? how to find out for any other crystal?

Discussion

310.	The carbon atom in acylium ion formed in Friedal- crafts acylation is hybridized.
Answer» The carbon atom in acylium ion formed in Friedal- crafts acylation is hybridized.

Discussion

311.	How many chlorine atoms are present in one molecule of DDT?
Answer» How many chlorine atoms are present in one molecule of DDT?

Discussion

312.	Any p-orbital can accommodate up to:
Answer» Any p-orbital can accommodate up to:

Discussion

313.	29.Can s-p atomic overlapping form pie bond?
Answer» 29.Can s-p atomic overlapping form pie bond?

Discussion

314.	In CCP type structure if half of face centre atoms are removed then % void in unit cell is
Answer» In CCP type structure if half of face centre atoms are removed then % void in unit cell is

Discussion

315.	What is the order of dipole moment of antiarometic,nonaromatic and aromatic molecule and how?
Answer» What is the order of dipole moment of antiarometic,nonaromatic and aromatic molecule and how?

Discussion

316.	Arrange the following in the decreasing order of basicity:
Answer» Arrange the following in the decreasing order of basicity:

Discussion

317.	Why is ethene Carbo cation more stable than 2 propyl carbon cation
Answer» Why is ethene Carbo cation more stable than 2 propyl carbon cation

Discussion

318.	wave length of electron in second orbit of helium ion
Answer» wave length of electron in second orbit of helium ion

Discussion

319.	26.calculate the equilibrium constant for the reaction given below at 400k . If Δ H^° =77.2kJmol and Δ S^° =122Jkmol PCl5 gives PCl3 + Cl2
Answer» 26.calculate the equilibrium constant for the reaction given below at 400k . If Δ H^° =77.2kJmol and Δ S^° =122Jkmol PCl5 gives PCl3 + Cl2

Discussion

320.	Number of 90degree angle in PCl5 is
Answer» Number of 90degree angle in PCl5 is

Discussion

321.	Find the separation between two electrons (in ∘A) in vacuum, if the electrostatic potential energy between these electrons is 7.67×10−19 J. [Given: e=1.6×10−19 C; ∈0=8.85×10−12 J−1C2m−1, π=3.14]
Answer» Find the separation between two electrons (in $\circ A$ ) in vacuum, if the electrostatic potential energy between these electrons is $7.67 \times 10^{- 19} J$ . [Given: $e = 1.6 \times 10^{- 19} C; \in_{0} = 8.85 \times 10^{- 12} J^{- 1} C^{2} m^{- 1}, π = 3.14$ ]

Discussion

322.	Is "Pseudo Unimolecular Reaction" same as "Pseudo First Order Reaction"?
Answer» Is "Pseudo Unimolecular Reaction" same as "Pseudo First Order Reaction"?

Discussion

323.	17. Which of the following compounds is not planar with reason Ch2=c=ch2 Ch2=ch2 Ch2=ch-ch=ch2 Ch2=ch-c=_ch
Answer» 17. Which of the following compounds is not planar with reason Ch2=c=ch2 Ch2=ch2 Ch2=ch-ch=ch2 Ch2=ch-c=_ch

Discussion

324.	A mixture of CaCl2 and NaCl weighing 4.44 g is treated with sodium carbonate solution to precipitate all the calcium ions as calcium carbonate. The calcium carbonate so obtained is heated strongly to get 0.56 g of CaO. The percentage of NaCl in the mixture is[Atomic mass of Ca = 40]? n nt
Answer» A mixture of CaCl2 and NaCl weighing 4.44 g is treated with sodium carbonate solution to precipitate all the calcium ions as calcium carbonate. The calcium carbonate so obtained is heated strongly to get 0.56 g of CaO. The percentage of NaCl in the mixture is[Atomic mass of Ca = 40]? n nt

Discussion

325.	35. Pure N2 is not produced when:- 1)Red hot CuO and NH3 react 2)Ba(N3)2 is heated 3)NaN3 is heated 4) None of these
Answer» 35. Pure N2 is not produced when:- 1)Red hot CuO and NH3 react 2)Ba(N3)2 is heated 3)NaN3 is heated 4) None of these

Discussion

326.	an ideal gas expands isothermally from 10^-3m^3 to 10^-2m^3 at 300 K against a constant pressure of 10^5 Nm^-2. The work done on the gas is
Answer» an ideal gas expands isothermally from 10^-3m^3 to 10^-2m^3 at 300 K against a constant pressure of 10^5 Nm^-2. The work done on the gas is

Discussion

327.	The dissociation constant of 0.01M CH3COOH is 1.8×10−5 then calculate CH3COO− concentration in 0.1 M HCl solution.
Answer» The dissociation constant of $0.01 M C H_{3} C O O H$ is $1.8 \times 10^{- 5}$ then calculate $C H_{3} C O O^{-}$ concentration in 0.1 M $H C l$ solution.

Discussion

328.	The enthalpy of hydrogenation of cyclohexene is -119.5 kJ/mol.If resonance energy of benzene is -150.4 kJ/mol, its enthalpy of hydrogenation would be?
Answer» The enthalpy of hydrogenation of cyclohexene is -119.5 kJ/mol.If resonance energy of benzene is -150.4 kJ/mol, its enthalpy of hydrogenation would be?

Discussion

329.	1.60 g of a metal A and 0.96 g of a metal B when treated with excess of dilute acid, separately, produced the same amount of hydrogen. Calculate the equivalent weight of A if the equivalent weight of B is 12
Answer» $1.60 g$ of a metal $A$ and $0.96 g$ of a metal $B$ when treated with excess of dilute acid, separately, produced the same amount of hydrogen. Calculate the equivalent weight of $A$ if the equivalent weight of $B$ is $12$

Discussion

330.	hich is incorrect for dz^2orbital? (1) It is axial directed orbital (2) It has zero nodal plane surface (3) it can have maximum two electrons (4) It has zero valuealong x-axis
Answer» hich is incorrect for dz^2orbital? (1) It is axial directed orbital (2) It has zero nodal plane surface (3) it can have maximum two electrons (4) It has zero valuealong x-axis

Discussion

331.	Why is a solution of potassium hydroxide used to absorb carbon dioxide evolved during the estimation of carbon present in an organic compound?
Answer» Why is a solution of potassium hydroxide used to absorb carbon dioxide evolved during the estimation of carbon present in an organic compound?

Discussion

332.	The enthalpy of hydrogenation of cyclohexene is-119.5kJmol-1. Is resonance energy of benzene is -150.4kJmol-1, it's enthalpy of hydrogenation would be
Answer» The enthalpy of hydrogenation of cyclohexene is-119.5kJmol-1. Is resonance energy of benzene is -150.4kJmol-1, it's enthalpy of hydrogenation would be

Discussion

333.	A 4 ml mixture of propane and propene when treated with chlorine gas in the absence of light, consume 1.5 ml of chlorine. The mole fraction of propane in the gas mixture is_____A. 0.625B. 0.375C. 0.750D. 0.250
Answer» A 4 ml mixture of propane and propene when treated with chlorine gas in the absence of light, consume 1.5 ml of chlorine. The mole fraction of propane in the gas mixture is_____ A. 0.625 B. 0.375 C. 0.750 D. 0.250

Discussion

334.	1. What is Dulog and Petti law Vapour pressure of benzene decreases on addition of naphthalene.
Answer» 1. What is Dulog and Petti law Vapour pressure of benzene decreases on addition of naphthalene.

Discussion

335.	28. Derive formula for the nth term of an A.P.
Answer» 28. Derive formula for the nth term of an A.P.

Discussion

336.	a. Define valency and variable valency with examples.b. If the valency of nitrogen is 3 and of hydrogen is 1. Write down the formula for ammonia?
Answer» a. Define valency and variable valency with examples. b. If the valency of nitrogen is 3 and of hydrogen is 1. Write down the formula for ammonia?

336.

a. Define valency and variable valency with examples.b. If the valency of nitrogen is 3 and of hydrogen is 1. Write down the formula for ammonia?

Answer»

a. Define valency and variable valency with examples.

b. If the valency of nitrogen is 3 and of hydrogen is 1. Write down the formula for ammonia?

Discussion

337.	Why is the electric field due to a -ve charge directed towards it and theelectric field due to a +ve charge directed away from it?
Answer» Why is the electric field due to a -ve charge directed towards it and theelectric field due to a +ve charge directed away from it?

Discussion

338.	For the production of y L H2 at STP at cathode, cost of electricity is x, then cost of production of y L O2 at STP at anode will be
Answer» For the production of y L H2 at STP at cathode, cost of electricity is x, then cost of production of y L O2 at STP at anode will be

Discussion

339.	5.6g of organic compound on burning with exess oxygen gave 17.6g of CO2 and 7.2g of H2O, the organic compound is
Answer» 5.6g of organic compound on burning with exess oxygen gave 17.6g of CO2 and 7.2g of H2O, the organic compound is

Discussion

340.	the mean rotational kinetic energy of diatomic molecule at temperature t is
Answer» the mean rotational kinetic energy of diatomic molecule at temperature t is

Discussion

341.	43.Which one of the following on reduction with lithium aluminium hydride yields a secondary amine. Methyl cyanide,Nitroethane,Methylisocyanide,Acetamide
Answer» 43.Which one of the following on reduction with lithium aluminium hydride yields a secondary amine. Methyl cyanide,Nitroethane,Methylisocyanide,Acetamide

Discussion

342.	For an ideal solution with p_A>p_{B, }which of the following is true?-1) (x_A)_{liquid}=(x_A)_{vapour}, 2) (x_A)_{liquid}>(x_A)_{vapour }, 3) (x_A)_{liquid}
Answer» For an ideal solution with p_A>p_{B, }which of the following is true?-1) (x_A)_{liquid}=(x_A)_{vapour}, 2) (x_A)_{liquid}>(x_A)_{vapour }, 3) (x_A)_{liquid}

Discussion

343.	Which curve in figure represents the curve of ideal gas? (a) Only B (B) C and D (c) E and F (d) A and B
Answer» Which curve in figure represents the curve of ideal gas? (a) Only B (B) C and D (c) E and F (d) A and B

343.

Which curve in figure represents the curve of ideal gas? (a) Only B (B) C and D (c) E and F (d) A and B

Answer»

Which curve in figure represents the curve of ideal gas?

(a) Only B (B) C and D (c) E and F (d) A and B

Discussion

344.	For the estimation of nitrogen, 1.4 g of organic compound was digested by Kjeldahl method and the evolved ammonia was absorbed in 60 mL of M10 sulphuric acid. The unreacted acid required 20 mL of M10 sodium hydroxide for complete neutralization. The percentage of nitrogen in the compound is
Answer» For the estimation of nitrogen, $1.4 g$ of organic compound was digested by Kjeldahl method and the evolved ammonia was absorbed in $60 m L$ of $\frac{M}{10}$ sulphuric acid. The unreacted acid required $20 m L$ of $\frac{M}{10}$ sodium hydroxide for complete neutralization. The percentage of nitrogen in the compound is

Discussion

345.	The hydrated salt Na2CO3 .xH2O undergoes 63% loss in mass on heating and becomes anhydrous. The value of x is
Answer» The hydrated salt Na2CO3 .xH2O undergoes 63% loss in mass on heating and becomes anhydrous. The value of x is

Discussion

346.	What is the function of meadeating partical
Answer» What is the function of meadeating partical

Discussion

347.	29.In alkaline medium ClO2 oxidise H2O2 to O2 and reduced itself to Cl-(chloride ion) then how many mole of H2O2 will be oxidised by one mole of ClO2 ?
Answer» 29.In alkaline medium ClO2 oxidise H2O2 to O2 and reduced itself to Cl-(chloride ion) then how many mole of H2O2 will be oxidised by one mole of ClO2 ?

Discussion

348.	What is the oxidation state of carbon and nitrogen in Cyanide and isocyanide
Answer» What is the oxidation state of carbon and nitrogen in Cyanide and isocyanide

Discussion

349.	How many 'd' electrons in Cu+ can have the spin quantum (−12)?
Answer» How many 'd' electrons in $C u^{+}$ can have the spin quantum $(\frac{- 1}{2})$ ?

Discussion

350.	ow to find the hybridisation of compounds?
Answer» ow to find the hybridisation of compounds?

Discussion

Explore topic-wise InterviewSolutions in .

what is the hybridisation involved in \lbrack Co(C_2O_4)_3\rbrack^{3-} and how

What is radical sign in exponents and power

25. What will be the product if (CH3)2-CH-CHO undergoes cannizzaro reaction ?

Butyric acid contains only C,H and O.a4.24 mg sample of butyric acid is completely burned. It gives 8.45 mg of CO2 and 3.46 mg of H2O .The molecular mass of butyric acid was determined by experiment to be 88 amu.What is molecular formula?

Give NO.and structure of possible strucutral isomers of C3H6O

methanol will have 4 covalent bonds?is it right or wrong

Which of the following is a primary amine:

At 300 K, the vapour pressure of an ideal solution that has 3 mol A and 2 mol B is 600 torr. At the same temperature, if 1.5 mol A &amp; 0.5 mol C (non-volatile) are added to this solution, the vapour pressure of the solution increases by 30 torr. Then, what is the value of P∘B?

what is the total number of elements of symmetry in a cubic crystal? how to find out for any other crystal?

The carbon atom in acylium ion formed in Friedal- crafts acylation is hybridized.

How many chlorine atoms are present in one molecule of DDT?

Any p-orbital can accommodate up to:

29.Can s-p atomic overlapping form pie bond?

In CCP type structure if half of face centre atoms are removed then % void in unit cell is

What is the order of dipole moment of antiarometic,nonaromatic and aromatic molecule and how?

Arrange the following in the decreasing order of basicity:

Why is ethene Carbo cation more stable than 2 propyl carbon cation

wave length of electron in second orbit of helium ion

26.calculate the equilibrium constant for the reaction given below at 400k . If Δ H^° =77.2kJmol and Δ S^° =122Jkmol PCl5 gives PCl3 + Cl2

Number of 90degree angle in PCl5 is

Find the separation between two electrons (in ∘A) in vacuum, if the electrostatic potential energy between these electrons is 7.67×10−19 J. [Given: e=1.6×10−19 C; ∈0=8.85×10−12 J−1C2m−1, π=3.14]

Is "Pseudo Unimolecular Reaction" same as "Pseudo First Order Reaction"?

17. Which of the following compounds is not planar with reason Ch2=c=ch2 Ch2=ch2 Ch2=ch-ch=ch2 Ch2=ch-c=_ch

A mixture of CaCl2 and NaCl weighing 4.44 g is treated with sodium carbonate solution to precipitate all the calcium ions as calcium carbonate. The calcium carbonate so obtained is heated strongly to get 0.56 g of CaO. The percentage of NaCl in the mixture is[Atomic mass of Ca = 40]? n nt

35. Pure N2 is not produced when:- 1)Red hot CuO and NH3 react 2)Ba(N3)2 is heated 3)NaN3 is heated 4) None of these

an ideal gas expands isothermally from 10^-3m^3 to 10^-2m^3 at 300 K against a constant pressure of 10^5 Nm^-2. The work done on the gas is

The dissociation constant of 0.01M CH3COOH is 1.8×10−5 then calculate CH3COO− concentration in 0.1 M HCl solution.

The enthalpy of hydrogenation of cyclohexene is -119.5 kJ/mol.If resonance energy of benzene is -150.4 kJ/mol, its enthalpy of hydrogenation would be?

1.60 g of a metal A and 0.96 g of a metal B when treated with excess of dilute acid, separately, produced the same amount of hydrogen. Calculate the equivalent weight of A if the equivalent weight of B is 12

hich is incorrect for dz^2orbital? (1) It is axial directed orbital (2) It has zero nodal plane surface (3) it can have maximum two electrons (4) It has zero valuealong x-axis

Why is a solution of potassium hydroxide used to absorb carbon dioxide evolved during the estimation of carbon present in an organic compound?

The enthalpy of hydrogenation of cyclohexene is-119.5kJmol-1. Is resonance energy of benzene is -150.4kJmol-1, it's enthalpy of hydrogenation would be

A 4 ml mixture of propane and propene when treated with chlorine gas in the absence of light, consume 1.5 ml of chlorine. The mole fraction of propane in the gas mixture is_____A. 0.625B. 0.375C. 0.750D. 0.250

1. What is Dulog and Petti law Vapour pressure of benzene decreases on addition of naphthalene.

28. Derive formula for the nth term of an A.P.

a. Define valency and variable valency with examples.b. If the valency of nitrogen is 3 and of hydrogen is 1. Write down the formula for ammonia?

Why is the electric field due to a -ve charge directed towards it and theelectric field due to a +ve charge directed away from it?

For the production of y L H2 at STP at cathode, cost of electricity is x, then cost of production of y L O2 at STP at anode will be

5.6g of organic compound on burning with exess oxygen gave 17.6g of CO2 and 7.2g of H2O, the organic compound is

the mean rotational kinetic energy of diatomic molecule at temperature t is

43.Which one of the following on reduction with lithium aluminium hydride yields a secondary amine. Methyl cyanide,Nitroethane,Methylisocyanide,Acetamide

For an ideal solution with p_A>p_{B, }which of the following is true?-1) (x_A)_{liquid}=(x_A)_{vapour}, 2) (x_A)_{liquid}>(x_A)_{vapour }, 3) (x_A)_{liquid}

Which curve in figure represents the curve of ideal gas? (a) Only B (B) C and D (c) E and F (d) A and B

For the estimation of nitrogen, 1.4 g of organic compound was digested by Kjeldahl method and the evolved ammonia was absorbed in 60 mL of M10 sulphuric acid. The unreacted acid required 20 mL of M10 sodium hydroxide for complete neutralization. The percentage of nitrogen in the compound is

The hydrated salt Na2CO3 .xH2O undergoes 63% loss in mass on heating and becomes anhydrous. The value of x is

What is the function of meadeating partical

29.In alkaline medium ClO2 oxidise H2O2 to O2 and reduced itself to Cl-(chloride ion) then how many mole of H2O2 will be oxidised by one mole of ClO2 ?

What is the oxidation state of carbon and nitrogen in Cyanide and isocyanide

How many 'd' electrons in Cu+ can have the spin quantum (−12)?

ow to find the hybridisation of compounds?

At 300 K, the vapour pressure of an ideal solution that has 3 mol A and 2 mol B is 600 torr. At the same temperature, if 1.5 mol A & 0.5 mol C (non-volatile) are added to this solution, the vapour pressure of the solution increases by 30 torr. Then, what is the value of P∘B?