46295 + Interview Questions in Chemistry Page 36 InterviewSolution

1751.	Product Z is
Answer» Product Z is

Discussion

1752.	N atoms of a radioactive element emit n number of alpha particles per second mean life of the element in seconds is
Answer» N atoms of a radioactive element emit n number of alpha particles per second mean life of the element in seconds is

Discussion

1753.	If S0 for H2, Cl2and HCL are 0.13, 0.22 and 0.19 kJK-1mol-1 respectively.The total change in standard entropy for th2e reaction, H2+Cl2→2HCl
Answer» If S⁰ for H₂, Cl₂ and HCL are 0.13, 0.22 and 0.19 kJK^-1mol^-1 respectively. The total change in standard entropy for th2e reaction, H₂+Cl₂→2HCl

Discussion

1754.	Which of the following is not an ore of iron?
Answer» Which of the following is not an ore of iron?

Discussion

1755.	The kinetic energy of an electron which is associatedwith de-Broglie's wavelength 20 A is (1) 1.0 eV (2) 1.51 ev (3) 0.59 eV (4) 0.38 eV
Answer» The kinetic energy of an electron which is associatedwith de-Broglie's wavelength 20 A is (1) 1.0 eV (2) 1.51 ev (3) 0.59 eV (4) 0.38 eV

Discussion

1756.	'भारत माता की जय' − आपके विचार से इस नारे में किसकी जय की बात कही जाती है? अपने उत्तर का कारण भी बताइए।
Answer» 'भारत माता की जय' − आपके विचार से इस नारे में किसकी जय की बात कही जाती है? अपने उत्तर का कारण भी बताइए।

Discussion

1757.	12.976g of lead combines with 2.004g of oxygen to form pbo2.pbo2 can also be produced by heating lead nitrate and it was found that the percentage of oxygen present in pbo2 is 13.38% . With the help of given information illustrate 5he law of constant composition.
Answer» 12.976g of lead combines with 2.004g of oxygen to form pbo2.pbo2 can also be produced by heating lead nitrate and it was found that the percentage of oxygen present in pbo2 is 13.38% . With the help of given information illustrate 5he law of constant composition.

Discussion

1758.	ntQ . 2.5 ml 2/5 M weak monoacidic base (kb= 10-12 at 25 C ) titrated with 2/15 HCl in water at 25 C . Find conc. H+ at equivalence point.n
Answer» ntQ . 2.5 ml 2/5 M weak monoacidic base (kb= 10-12 at 25 C ) titrated with 2/15 HCl in water at 25 C . Find conc. H+ at equivalence point.n

Discussion

1759.	Helium atom has 2 electrons in its valence shell but its valency is not 2. Explain.
Answer» Helium atom has 2 electrons in its valence shell but its valency is not 2. Explain.

Discussion

1760.	Amino acids are classified as acidic, basic or neutrl depending upon the relative number of amino and carboxyl groups in their molucule. Which of the following are acidic? (a) (CH3)CH−CH\|NH2−COOH (b) HOOC−CH2−CH2−CH\|NH2−COOH (c) H2N−CH2−CH2−CH2−COOH (d) HOOC−CH2−CH\|NH2−COOH
Answer» Amino acids are classified as acidic, basic or neutrl depending upon the relative number of amino and carboxyl groups in their molucule. Which of the following are acidic? (a) $(C H_{3}) C H - C H \| N H_{2} - C O O H$ (b) $H O O C - C H_{2} - C H_{2} - C H \| N H_{2} - C O O H$ (c) $H_{2} N - C H_{2} - C H_{2} - C H_{2} - C O O H$ (d) $H O O C - C H_{2} - C H \| N H_{2} - C O O H$

Discussion

1761.	Question 4What will happen if the solution of sodium hydrogen carbonate is heated? Give the equation of the reaction involved.
Answer» Question 4 What will happen if the solution of sodium hydrogen carbonate is heated? Give the equation of the reaction involved.

Discussion

1762.	The point (3,15) passes through the line represented by the equation .
Answer» The point (3,15) passes through the line represented by the equation .

Discussion

1763.	Which of the following trihalides is not hydrolysed by water?
Answer» Which of the following trihalides is not hydrolysed by water?

Discussion

1764.	What is the difference between NADH and NADH2? Can they be used interchangeably during ETS?
Answer» What is the difference between NADH and NADH2? Can they be used interchangeably during ETS?

Discussion

1765.	Which of the following compounds turns white on treatment with H2O2?
Answer» Which of the following compounds turns white on treatment with $H_{2} O_{2}$ ?

Discussion

1766.	Principle of chromatography
Answer» Principle of chromatography

Discussion

1767.	In which of the following solutions the percent dissociation of HCN is maximum? (1)0.1 M CH_3COOH (2) 0.01 M CH_3 COOH (3) 0.001 M CH_3COOH (4 )1.0 M CH_3COOH
Answer» In which of the following solutions the percent dissociation of HCN is maximum? (1)0.1 M CH_3COOH (2) 0.01 M CH_3 COOH (3) 0.001 M CH_3COOH (4 )1.0 M CH_3COOH

Discussion

1768.	FIND THE FLUX THROUGH THE DISC DERIVATION
Answer» FIND THE FLUX THROUGH THE DISC DERIVATION

Discussion

1769.	Gf (kJ/mol) values at 298 K for Ag+(aq), Cl-(aq) and AgCl (s) are 77,-129 and-109 respectively for the given reaction, Ag+(aq) + Cl-(aq) =AgCI(s) Then the solubility product of AgCl is ?
Answer» Gf (kJ/mol) values at 298 K for Ag+(aq), Cl-(aq) and AgCl (s) are 77,-129 and-109 respectively for the given reaction, Ag+(aq) + Cl-(aq) =AgCI(s) Then the solubility product of AgCl is ?

Discussion

1770.	Can a catalyst change the position of the equilibrium in a reaction?
Answer» Can a catalyst change the position of the equilibrium in a reaction?

Discussion

1771.	Write the equations for the preparation of 1-iodobutane from 1 - butanol 1-chlorobutane but-1-ene
Answer» Write the equations for the preparation of 1-iodobutane from 1 - butanol 1-chlorobutane but-1-ene

1771.

Write the equations for the preparation of 1-iodobutane from 1 - butanol 1-chlorobutane but-1-ene

Answer»

Write the equations for the preparation of 1-iodobutane from

1 - butanol

1-chlorobutane

but-1-ene

Discussion

1772.	In a given reaction, barium hydroxide reacts with ammonium chloride to form product X and Y. Identify X and Y.Ba(OH)2+NH4Cl→X+Y
Answer» In a given reaction, barium hydroxide reacts with ammonium chloride to form product X and Y. Identify X and Y. $B a (O H)_{2} + N H_{4} C l \to X + Y$

Discussion

1773.	20ml of 0.2M Al2(SO4)3 is mixed with 20ml of 6.6M BaCl2, the concentration of Cl ion is??
Answer» 20ml of 0.2M Al2(SO4)3 is mixed with 20ml of 6.6M BaCl2, the concentration of Cl ion is??

Discussion

1774.	Way to learn the reactivity series and complete periodic table
Answer» Way to learn the reactivity series and complete periodic table

Discussion

1775.	ntAbove boyle point real gases show positive deviations from ideality - why ?n
Answer» ntAbove boyle point real gases show positive deviations from ideality - why ?n

Discussion

1776.	10 mL of 2 M acid is added to 250 mL of a buffer solution with pH=6.34 and the pH of the solution becomes 6.32. The buffer capacity of the solution is:
Answer» $10 mL$ of $2 M$ acid is added to $250 mL$ of a buffer solution with $p H = 6.34$ and the $p H$ of the solution becomes $6.32$ . The buffer capacity of the solution is:

Discussion

1777.	Predict the order of reaction on the basis of following graph
Answer» Predict the order of reaction on the basis of following graph

Discussion

1778.	The product ‘B’ is
Answer» The product ‘B’ is

Discussion

1779.	Predictwhich of the following reaction will have appreciable concentrationof reactants and products:a)b)c)
Answer» Predict which of the following reaction will have appreciable concentration of reactants and products: a) b) c)

1779.

Predictwhich of the following reaction will have appreciable concentrationof reactants and products:a)b)c)

Answer»

Predict
which of the following reaction will have appreciable concentration
of reactants and products:

a)

b)

c)

Discussion

1780.	The pressure necessary to obtain 50% dissociation of PCl5 at 400 K is numerically equal to how many times the value of the equilibrium constant Kp
Answer» The pressure necessary to obtain $50 %$ dissociation of $P C l_{5}$ at $400 K$ is numerically equal to how many times the value of the equilibrium constant $K_{p}$

Discussion

1781.	In a compound A_xB_y :- (1) Mole of A= mole of B= mole of A_xB_y (2) eq of A= eq of B= eq of A_xB_y (3) yx mole of A= yx mole of B= (x+y) mole of A_xB_y (4) yx mole of A= yx mole of
Answer» In a compound A_xB_y :- (1) Mole of A= mole of B= mole of A_xB_y (2) eq of A= eq of B= eq of A_xB_y (3) yx mole of A= yx mole of B= (x+y) mole of A_xB_y (4) yx mole of A= yx mole of

Discussion

1782.	47.What is lattice and what is lattice enthalpy . Explain.
Answer» 47.What is lattice and what is lattice enthalpy . Explain.

Discussion

1783.	which state of matter has the most interparticle force of attraction and which state has the least?
Answer» which state of matter has the most interparticle force of attraction and which state has the least?

Discussion

1784.	Pick out the diamagnetic species
Answer» Pick out the diamagnetic species

Discussion

1785.	Acetic acid forms a dimer in the gas phase The dimer is held together by two hydrogen bonds with a total strength of 66.5 kJ per mole of dimer. At 25oC, the equilibrium constant for the dimerisation is 1.3×103 (pressure in atm). What is magnitude △S0 for the reaction? Assume that △H does not vary with temperature.
Answer» Acetic acid forms a dimer in the gas phase The dimer is held together by two hydrogen bonds with a total strength of 66.5 kJ per mole of dimer. At $25^{o} C,$ the equilibrium constant for the dimerisation is $1.3 \times 10^{3}$ (pressure in atm). What is magnitude $△ S^{0}$ for the reaction? Assume that $△ H$ does not vary with temperature.

Discussion

1786.	Differentiate between cholestrol, lipids and fatty acids with appropriate definitions.
Answer» Differentiate between cholestrol, lipids and fatty acids with appropriate definitions.

Discussion

1787.	The Darcy-Weisbach 'f' is related to Mannings 'n' as
Answer» The Darcy-Weisbach 'f' is related to Mannings 'n' as

Discussion

1788.	36. 2moles PCl5 is taken in 2l vessel. If 50% of PCl5 is undergoing dissociation. Calculate kc for the reaction
Answer» 36. 2moles PCl5 is taken in 2l vessel. If 50% of PCl5 is undergoing dissociation. Calculate kc for the reaction

Discussion

1789.	The structure of resorcinol is:
Answer» The structure of resorcinol is:

Discussion

1790.	How to draw free body diagram and make equations from it
Answer» How to draw free body diagram and make equations from it

Discussion

1791.	The molecular formula for Heptane is :
Answer» The molecular formula for Heptane is :

Discussion

1792.	Among the equations given below, ΔH of which one is equal to IE1 of Ba?
Answer» Among the equations given below, $Δ H$ of which one is equal to $I E_{1}$ of $B a$ ?

Discussion

1793.	U1 moles of a monoatomic gas are mixed with u2 moles of a diatomic gas at T=T1 and T2 respectively find out temp. Of mixture if there is no loss of energy.
Answer» U1 moles of a monoatomic gas are mixed with u2 moles of a diatomic gas at T=T1 and T2 respectively find out temp. Of mixture if there is no loss of energy.

Discussion

1794.	A mixture of CO and CO2 is found to have a density of 1.5 g/L at 30°C and 730 torr . What is the composition of the mixture .
Answer» A mixture of CO and CO2 is found to have a density of 1.5 g/L at 30°C and 730 torr . What is the composition of the mixture .

Discussion

1795.	P and Q are isomers. Identify Q -
Answer» P and Q are isomers. Identify Q -

Discussion

1796.	What is common in the images below?
Answer» What is common in the images below?

Discussion

1797.	18.0 g of water completely vaporises at 100∘C and 1 bar pressure and the enthalpy change in the process is 40.79 kJ mol−1. What will be the enthalpy change for vaporising two moles of water under the same conditions? What is the standard enthalpy of vaporisation for water?
Answer» 18.0 g of water completely vaporises at $100^{\circ} C$ and 1 bar pressure and the enthalpy change in the process is 40.79 kJ $m o l^{- 1}$ . What will be the enthalpy change for vaporising two moles of water under the same conditions? What is the standard enthalpy of vaporisation for water?

Discussion

1798.	10.Vinyl chloride on treatment with aqueous KOH gives
Answer» 10.Vinyl chloride on treatment with aqueous KOH gives

Discussion

1799.	44. A and B stand in a ring with 10 other persons. If the arrangement of the twelve persons is at random ; find the chance that there are exactly three persons between A and B.
Answer» 44. A and B stand in a ring with 10 other persons. If the arrangement of the twelve persons is at random ; find the chance that there are exactly three persons between A and B.

Discussion

1800.	Consider the following list of Reagents: Acidified K2Cr2O7, Alkaline KMnO4, CuSO4,H2O2,Cl2,O3,FeCl3,HNO3 and Na2S2O3. The total number of reagents that can oxidise aqueous iodide to iodine is:
Answer» Consider the following list of Reagents: Acidified $K_{2} C r_{2} O_{7}$ , Alkaline $K M n O_{4}$ , $C u S O_{4}, H_{2} O_{2}, C l_{2}, O_{3}, F e C l_{3}, H N O_{3}$ and $N a_{2} S_{2} O_{3}$ . The total number of reagents that can oxidise aqueous iodide to iodine is:

Discussion

Explore topic-wise InterviewSolutions in .

Product Z is

N atoms of a radioactive element emit n number of alpha particles per second mean life of the element in seconds is

If S0 for H2, Cl2and HCL are 0.13, 0.22 and 0.19 kJK-1mol-1 respectively.The total change in standard entropy for th2e reaction, H2+Cl2→2HCl

Which of the following is not an ore of iron?

The kinetic energy of an electron which is associatedwith de-Broglie's wavelength 20 A is (1) 1.0 eV (2) 1.51 ev (3) 0.59 eV (4) 0.38 eV

'भारत माता की जय' − आपके विचार से इस नारे में किसकी जय की बात कही जाती है? अपने उत्तर का कारण भी बताइए।

12.976g of lead combines with 2.004g of oxygen to form pbo2.pbo2 can also be produced by heating lead nitrate and it was found that the percentage of oxygen present in pbo2 is 13.38% . With the help of given information illustrate 5he law of constant composition.

ntQ . 2.5 ml 2/5 M weak monoacidic base (kb= 10-12 at 25 C ) titrated with 2/15 HCl in water at 25 C . Find conc. H+ at equivalence point.n

Helium atom has 2 electrons in its valence shell but its valency is not 2. Explain.

Question 4What will happen if the solution of sodium hydrogen carbonate is heated? Give the equation of the reaction involved.

The point (3,15) passes through the line represented by the equation .

Which of the following trihalides is not hydrolysed by water?

What is the difference between NADH and NADH2? Can they be used interchangeably during ETS?

Which of the following compounds turns white on treatment with H2O2?

Principle of chromatography

In which of the following solutions the percent dissociation of HCN is maximum? (1)0.1 M CH_3COOH (2) 0.01 M CH_3 COOH (3) 0.001 M CH_3COOH (4 )1.0 M CH_3COOH

FIND THE FLUX THROUGH THE DISC DERIVATION

Gf (kJ/mol) values at 298 K for Ag+(aq), Cl-(aq) and AgCl (s) are 77,-129 and-109 respectively for the given reaction, Ag+(aq) + Cl-(aq) =AgCI(s) Then the solubility product of AgCl is ?

Can a catalyst change the position of the equilibrium in a reaction?

Write the equations for the preparation of 1-iodobutane from 1 - butanol 1-chlorobutane but-1-ene

In a given reaction, barium hydroxide reacts with ammonium chloride to form product X and Y. Identify X and Y.Ba(OH)2+NH4Cl→X+Y

20ml of 0.2M Al2(SO4)3 is mixed with 20ml of 6.6M BaCl2, the concentration of Cl ion is??

Way to learn the reactivity series and complete periodic table

ntAbove boyle point real gases show positive deviations from ideality - why ?n

10 mL of 2 M acid is added to 250 mL of a buffer solution with pH=6.34 and the pH of the solution becomes 6.32. The buffer capacity of the solution is:

Predict the order of reaction on the basis of following graph

The product ‘B’ is

Predictwhich of the following reaction will have appreciable concentrationof reactants and products:a)b)c)

The pressure necessary to obtain 50% dissociation of PCl5 at 400 K is numerically equal to how many times the value of the equilibrium constant Kp

In a compound A_xB_y :- (1) Mole of A= mole of B= mole of A_xB_y (2) eq of A= eq of B= eq of A_xB_y (3) yx mole of A= yx mole of B= (x+y) mole of A_xB_y (4) yx mole of A= yx mole of

47.What is lattice and what is lattice enthalpy . Explain.

which state of matter has the most interparticle force of attraction and which state has the least?

Pick out the diamagnetic species

Differentiate between cholestrol, lipids and fatty acids with appropriate definitions.

The Darcy-Weisbach 'f' is related to Mannings 'n' as

36. 2moles PCl5 is taken in 2l vessel. If 50% of PCl5 is undergoing dissociation. Calculate kc for the reaction

The structure of resorcinol is:

How to draw free body diagram and make equations from it

The molecular formula for Heptane is :

Among the equations given below, ΔH of which one is equal to IE1 of Ba?

U1 moles of a monoatomic gas are mixed with u2 moles of a diatomic gas at T=T1 and T2 respectively find out temp. Of mixture if there is no loss of energy.

A mixture of CO and CO2 is found to have a density of 1.5 g/L at 30°C and 730 torr . What is the composition of the mixture .

P and Q are isomers. Identify Q -

What is common in the images below?

18.0 g of water completely vaporises at 100∘C and 1 bar pressure and the enthalpy change in the process is 40.79 kJ mol−1. What will be the enthalpy change for vaporising two moles of water under the same conditions? What is the standard enthalpy of vaporisation for water?

10.Vinyl chloride on treatment with aqueous KOH gives

44. A and B stand in a ring with 10 other persons. If the arrangement of the twelve persons is at random ; find the chance that there are exactly three persons between A and B.

Consider the following list of Reagents: Acidified K2Cr2O7, Alkaline KMnO4, CuSO4,H2O2,Cl2,O3,FeCl3,HNO3 and Na2S2O3. The total number of reagents that can oxidise aqueous iodide to iodine is: