46295 + Interview Questions in Chemistry

1.	An oxide of Nitrogen as a molecular weight of 30. Total number of electrons in 1 molecule of the compound is A. 15 B. 30 C. 45 D. 60
Answer» An oxide of Nitrogen as a molecular weight of 30. Total number of electrons in 1 molecule of the compound is A. 15 B. 30 C. 45 D. 60

1.

An oxide of Nitrogen as a molecular weight of 30. Total number of electrons in 1 molecule of the compound is A. 15 B. 30 C. 45 D. 60

Answer»

An oxide of Nitrogen as a molecular weight of 30. Total number of electrons in 1 molecule of the compound is

A. 15

B. 30

C. 45

D. 60

Discussion

2.	7.What are meso compounds
Answer» 7.What are meso compounds

Discussion

3.	Why do HCl, HNO3 , etc. show acidic character in aqueous solutions while solutions of compounds like, C2H5OH and glucose do not show acidic character? Why does an aqueous solution of an acid conducts electricity?
Answer» Why do $HCl$ , ${HNO}_{3}$ , etc. show acidic character in aqueous solutions while solutions of compounds like, $C_{2} H_{5} OH$ and glucose do not show acidic character? Why does an aqueous solution of an acid conducts electricity?

Discussion

4.	Match the reactions with corresponding reagents:
Answer» Match the reactions with corresponding reagents:

Discussion

5.	if the function f : A -> A , A={1,2,3,4} then find the total number of onto function
Answer» if the function f : A -> A , A={1,2,3,4} then find the total number of onto function

Discussion

6.	When value of g positive or negative
Answer» When value of g positive or negative

Discussion

7.	49. 10lit N2 & 30lit H2 are mixed to form NH3 find final composition of mixture by volume. If % yield of the product is 40%.
Answer» 49. 10lit N2 & 30lit H2 are mixed to form NH3 find final composition of mixture by volume. If % yield of the product is 40%.

Discussion

8.	Why can we not determine the order of a reaction by taking into consideration the balanced chemical equation?
Answer» Why can we not determine the order of a reaction by taking into consideration the balanced chemical equation?

Discussion

9.	ntwhich of the following will undergo racemisation most readily by hydrolysisn nt1)(CH3)3C-Br 2)Ph-CH(CH3)-Br 3)CH3-O-CH(CH3)-Br 4)CH3-CH(CH3)-Brn
Answer» ntwhich of the following will undergo racemisation most readily by hydrolysisn nt1)(CH3)3C-Br 2)Ph-CH(CH3)-Br 3)CH3-O-CH(CH3)-Br 4)CH3-CH(CH3)-Brn

Discussion

10.	12. Which compound is formed when enolate of 2-methylcyclohexanone ,formed from lithium diisopropylamide(LDA),reacts with methyl amide?
Answer» 12. Which compound is formed when enolate of 2-methylcyclohexanone ,formed from lithium diisopropylamide(LDA),reacts with methyl amide?

Discussion

11.	Draw all the isomers (geometrical and optical) of: [CoCl2(en)2]+ [Co(NH3)Cl(en)2]2+ [Co(NH3)2Cl2(en)]+
Answer» Draw all the isomers (geometrical and optical) of: ${[C o C l_{2} {(e n)}_{2}]}_{2}^{+}$ ${[C o (N H_{3}) C l {(e n)}_{2}]}_{2}^{2 +}$ ${[C o {(N H_{3})}_{2} C l_{2} (e n)]}_{2}^{+}$

11.

Draw all the isomers (geometrical and optical) of: [CoCl2(en)2]+ [Co(NH3)Cl(en)2]2+ [Co(NH3)2Cl2(en)]+

Answer»

Draw all the isomers (geometrical and optical) of:
${[C o C l_{2} {(e n)}_{2}]}_{2}^{+}$

${[C o (N H_{3}) C l {(e n)}_{2}]}_{2}^{2 +}$

${[C o {(N H_{3})}_{2} C l_{2} (e n)]}_{2}^{+}$

Discussion

12.	IUPAC name of the following compound is CH3−CH=CH−C≡H?
Answer» IUPAC name of the following compound is $C H_{3} - C H = C H - C \equiv H$ ?

Discussion

13.	A: The presence of nitro group facilitatesnucleophilic substitution reactions in arylhalidesR: The intermediate carbanion is stabilised due tothe presence of nitro group.
Answer» A: The presence of nitro group facilitatesnucleophilic substitution reactions in arylhalidesR: The intermediate carbanion is stabilised due tothe presence of nitro group.

Discussion

14.	What will be the de Broglie wavelength of a particle of rest mass m, if it moves with the speed of light? a) h/3mkt b) 2h/mc 3) infinite d) Zero
Answer» What will be the de Broglie wavelength of a particle of rest mass m, if it moves with the speed of light? a) h/3mkt b) 2h/mc 3) infinite d) Zero

Discussion

15.	The volume of three mole of an ideal gas changes from V from 3V at constant temperature 300 k work done in the process will be (R is universal gas constant ) 1)450 R In(9) 2)300 R In(3) .3) 300R In(9). 4)900R In(2)
Answer» The volume of three mole of an ideal gas changes from V from 3V at constant temperature 300 k work done in the process will be (R is universal gas constant ) 1)450 R In(9) 2)300 R In(3) .3) 300R In(9). 4)900R In(2)

Discussion

16.	Among the structures shown below, which one has the lowest potential energy?
Answer» Among the structures shown below, which one has the lowest potential energy?

Discussion

17.	Which one of the following oxides is neutral?
Answer» Which one of the following oxides is neutral?

Discussion

18.	In the reaction HC≡CH+2AgNO3NH4OH−−−−−→X+2NH4NO3+2H2O 'X' is
Answer» In the reaction $H C \equiv C H + 2 A g N O_{3} N H_{4} O H - ---- \to X + 2 N H_{4} N O_{3} + 2 H_{2} O$ 'X' is

18.

In the reaction HC≡CH+2AgNO3NH4OH−−−−−→X+2NH4NO3+2H2O 'X' is

Answer»

In the reaction

$H C \equiv C H + 2 A g N O_{3} N H_{4} O H - ---- \to X + 2 N H_{4} N O_{3} + 2 H_{2} O$ 'X' is

Discussion

19.	The uncertainty in momentum of an electron is 1×10−5kg−m/s. The uncertainty in its position will be (h=6.62×10−34kg−m2/s)
Answer» The uncertainty in momentum of an electron is $1 \times 10^{- 5} k g - m / s$ . The uncertainty in its position will be $(h = 6.62 \times 10^{- 34} k g - m^{2} / s)$

Discussion

20.	The compound with the highest boiling point isPropanalPropanoneAcetic acidPropan 1 ol
Answer» The compound with the highest boiling point is Propanal Propanone Acetic acid Propan 1 ol

Discussion

21.	Explain how and why and which gases are collected by the upward and downward displacement of air respectively.
Answer» Explain how and why and which gases are collected by the upward and downward displacement of air respectively.

Discussion

22.	Electrode potential data of few cells is given below. Based on the data, arrange the ions in increasing order of their reducing power :-Fe3+(aq) + e– → Fe2+(aq); E° = +0.77 VAl3+(aq) + 3e– → Al(s); E° = –1.66 VBr2(aq) + 2e– → 2Br–(aq); E° = +1.09 V(1) Br– < Fe2+ < Al(2) Fe2+ < Al < Br–(3) Al < Br– < Fe2+(4) Al < Fe2+ < Br–
Answer» Electrode potential data of few cells is given below. Based on the data, arrange the ions in increasing order of their reducing power :- Fe3+(aq) + e– → Fe2+(aq); E° = +0.77 V Al3+(aq) + 3e– → Al(s); E° = –1.66 V Br2(aq) + 2e– → 2Br–(aq); E° = +1.09 V (1) Br– < Fe2+ < Al (2) Fe2+ < Al < Br– (3) Al < Br– < Fe2+ (4) Al < Fe2+ < Br–

Discussion

23.	What is viscosity and coefficient of viscosity? Difference between them?
Answer» What is viscosity and coefficient of viscosity? Difference between them?

Discussion

24.	A nugget of gold and quartz was found to contain x g of gold and y g of quartz and has density d. If the densities gold and quartz are d1 and d2\ respectively then the correct relation is
Answer» A nugget of gold and quartz was found to contain x g of gold and y g of quartz and has density d. If the densities gold and quartz are $d_{1}$ and $d_{2}$ \ respectively then the correct relation is

Discussion

25.	Q 12/42 When cumene is oxidised in the presence ofair followed by treatment with dilute acid, the productsobtained are
Answer» Q 12/42 When cumene is oxidised in the presence ofair followed by treatment with dilute acid, the productsobtained are

Discussion

26.	FeSO_{4 }\xrightarrow△ ? how many different gases are evolved
Answer» FeSO_{4 }\xrightarrow△ ? how many different gases are evolved

Discussion

27.	Which trihalide is not hydrolysed by water?
Answer» Which trihalide is not hydrolysed by water?

Discussion

28.	The well known insecticide, Gammaxene is one of the stereoisomers of hexachlorocyclohexane. The reagent useful for conversion of benzene into hexachlorocyclohexane is -
Answer» The well known insecticide, Gammaxene is one of the stereoisomers of hexachlorocyclohexane. The reagent useful for conversion of benzene into hexachlorocyclohexane is -

Discussion

29.	98.The temp at which 10 aq sol. (w/v) of glucose will exhibit the osmotic pressure of 16.4 atm is
Answer» 98.The temp at which 10 aq sol. (w/v) of glucose will exhibit the osmotic pressure of 16.4 atm is

Discussion

30.	A non-ideal gas obeys the equation PV = RT + BP, where V is the molar volume and B is 10 L/mol. If one mole of the gas is expanded isothermally and reversibly at 27°C from 20 atm to 2 atm, calculate ΔU and ΔH ( jee advance 1997)
Answer» A non-ideal gas obeys the equation PV = RT + BP, where V is the molar volume and B is 10 L/mol. If one mole of the gas is expanded isothermally and reversibly at 27°C from 20 atm to 2 atm, calculate ΔU and ΔH ( jee advance 1997)

Discussion

31.	How reducing nature is inversely proportional to ionisation potential?
Answer» How reducing nature is inversely proportional to ionisation potential?

Discussion

32.	Find the number of degrees of freedom of molecules in a gas whose molar heat capacity at constant pressure is equal to CP=29 J/(mol.K)
Answer» Find the number of degrees of freedom of molecules in a gas whose molar heat capacity at constant pressure is equal to $C_{P} = 29 J/(mol.K)$

Discussion

33.	Which of the following will react with water?
Answer» Which of the following will react with water?

Discussion

34.	Hio4 converts primary, secondary , and tertiary alcohol in what
Answer» Hio4 converts primary, secondary , and tertiary alcohol in what

Discussion

35.	What is a point and an extended object
Answer» What is a point and an extended object

Discussion

36.	What properties do fullerenes have?
Answer» What properties do fullerenes have?

Discussion

37.	The solubility in water of a sparingly soluble salt PbBr2 is 6.6×10−6 mol L−1. What is the concentration of Br−(aq) in a saturated solution of PbBr2(s)?(1.65)13=1.18
Answer» The solubility in water of a sparingly soluble salt $P b B r_{2}$ is $6.6 \times 10^{- 6}$ mol $L^{- 1}$ . What is the concentration of $B r^{-} (a q)$ in a saturated solution of $P b B r_{2} (s)$ ? $(1.65)^{\frac{1}{3}} = 1.18$

Discussion

38.	Calculate normality of 2.1% (w/V) H2SO4 solution.
Answer» Calculate normality of $2.1$ % (w/V) $H_{2} S O_{4}$ solution.

Discussion

39.	An aqueous solution of a complex compound of formula Co (NH3)5Br (SO4)reacts readily with aqueous AgNO3 to give a yellowish white precipitate.write down the structural formula of the complex and mention the reaction involved.
Answer» An aqueous solution of a complex compound of formula Co (NH3)5Br (SO4)reacts readily with aqueous AgNO3 to give a yellowish white precipitate.write down the structural formula of the complex and mention the reaction involved.

Discussion

40.	When 0.05 moles of H2 is mixed with CO, what is the number of moles of methanol (CH3OH) that can be obtained? (CH3OH is the only product)
Answer» When 0.05 moles of $H_{2}$ is mixed with $C O$ , what is the number of moles of methanol $(C H_{3} O H)$ that can be obtained? ( $C H_{3} O H$ is the only product)

Discussion

41.	EXPLANATIONS OF ELLINGHAM DIAGRAM
Answer» EXPLANATIONS OF ELLINGHAM DIAGRAM

Discussion

42.	The boiling point of pure water is 100 ∘C. Calculate the boiling point of an aqueous solution containing 0.6 g of urea (molar mass = 60 g mol−1) in 100 g of water. Kb for water is 0.52 K kg mol−1.
Answer» The boiling point of pure water is $100^{\circ}$ C. Calculate the boiling point of an aqueous solution containing $0.6 g$ of urea (molar mass = $60 {g mol}^{- 1}$ ) in $100 g$ of water. $K_{b}$ for water is $0.52 {K kg mol}^{- 1}$ .

Discussion

43.	What is anode mud?
Answer» What is anode mud?

Discussion

44.	The complex which is paramagnetic?
Answer» The complex which is paramagnetic?

Discussion

45.	Of the following, the most stable hydride is
Answer» Of the following, the most stable hydride is

Discussion

46.	Dimentional formula for volume charge density
Answer» Dimentional formula for volume charge density

Discussion

47.	(a) Specify the charge is carried by anions? What happens to an element ‘A’ if its atom gains two electrons?(b) Classify the substances given below into elements and compounds. NaCl, Cu, CaCO3, Zn, O2, H2O, F2, Hg, Diamond
Answer» (a) Specify the charge is carried by anions? What happens to an element ‘A’ if its atom gains two electrons? (b) Classify the substances given below into elements and compounds. NaCl, Cu, CaCO3, Zn, O2, H2O, F2, Hg, Diamond

47.

(a) Specify the charge is carried by anions? What happens to an element ‘A’ if its atom gains two electrons?(b) Classify the substances given below into elements and compounds. NaCl, Cu, CaCO3, Zn, O2, H2O, F2, Hg, Diamond

Answer»

(a) Specify the charge is carried by anions? What happens to an element ‘A’ if its atom gains two electrons?

(b) Classify the substances given below into elements and compounds.

NaCl, Cu, CaCO3, Zn, O2, H2O, F2, Hg, Diamond

Discussion

48.	A Carnot engine, having an efficiency of η=110 as heat engine, is used as a refrigerator. If the work done on the system is 10 J, the amount of energy absorbed from the reservoir at lower temperature is (in J)
Answer» A Carnot engine, having an efficiency of $η = \frac{1}{10}$ as heat engine, is used as a refrigerator. If the work done on the system is $10 J$ , the amount of energy absorbed from the reservoir at lower temperature is (in $J$ )

Discussion

49.	Calculate bond order of \lbrack He-H\rbrack^+ from molecular orbital theory
Answer» Calculate bond order of \lbrack He-H\rbrack^+ from molecular orbital theory

Discussion

50.	x, y and z are marked for hydrogen atoms in the following molecule which have Ka values respectively as
Answer» $x$ , $y$ and $z$ are marked for hydrogen atoms in the following molecule which have $K_{a}$ values respectively as

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

An oxide of Nitrogen as a molecular weight of 30. Total number of electrons in 1 molecule of the compound is A. 15 B. 30 C. 45 D. 60

7.What are meso compounds

Why do HCl, HNO3 , etc. show acidic character in aqueous solutions while solutions of compounds like, C2H5OH and glucose do not show acidic character? Why does an aqueous solution of an acid conducts electricity?

Match the reactions with corresponding reagents:

if the function f : A -&gt; A , A={1,2,3,4} then find the total number of onto function

When value of g positive or negative

49. 10lit N2 & 30lit H2 are mixed to form NH3 find final composition of mixture by volume. If % yield of the product is 40%.

Why can we not determine the order of a reaction by taking into consideration the balanced chemical equation?

ntwhich of the following will undergo racemisation most readily by hydrolysisn nt1)(CH3)3C-Br 2)Ph-CH(CH3)-Br 3)CH3-O-CH(CH3)-Br 4)CH3-CH(CH3)-Brn

12. Which compound is formed when enolate of 2-methylcyclohexanone ,formed from lithium diisopropylamide(LDA),reacts with methyl amide?

Draw all the isomers (geometrical and optical) of: [CoCl2(en)2]+ [Co(NH3)Cl(en)2]2+ [Co(NH3)2Cl2(en)]+

IUPAC name of the following compound is CH3−CH=CH−C≡H?

A: The presence of nitro group facilitatesnucleophilic substitution reactions in arylhalidesR: The intermediate carbanion is stabilised due tothe presence of nitro group.

What will be the de Broglie wavelength of a particle of rest mass m, if it moves with the speed of light? a) h/3mkt b) 2h/mc 3) infinite d) Zero

The volume of three mole of an ideal gas changes from V from 3V at constant temperature 300 k work done in the process will be (R is universal gas constant ) 1)450 R In(9) 2)300 R In(3) .3) 300R In(9). 4)900R In(2)

Among the structures shown below, which one has the lowest potential energy?

Which one of the following oxides is neutral?

In the reaction HC≡CH+2AgNO3NH4OH−−−−−→X+2NH4NO3+2H2O 'X' is

The uncertainty in momentum of an electron is 1×10−5kg−m/s. The uncertainty in its position will be (h=6.62×10−34kg−m2/s)

The compound with the highest boiling point isPropanalPropanoneAcetic acidPropan 1 ol

Explain how and why and which gases are collected by the upward and downward displacement of air respectively.

What is viscosity and coefficient of viscosity? Difference between them?

A nugget of gold and quartz was found to contain x g of gold and y g of quartz and has density d. If the densities gold and quartz are d1 and d2\ respectively then the correct relation is

Q 12/42 When cumene is oxidised in the presence ofair followed by treatment with dilute acid, the productsobtained are

FeSO_{4 }\xrightarrow△ ? how many different gases are evolved

Which trihalide is not hydrolysed by water?

The well known insecticide, Gammaxene is one of the stereoisomers of hexachlorocyclohexane. The reagent useful for conversion of benzene into hexachlorocyclohexane is -

98.The temp at which 10 aq sol. (w/v) of glucose will exhibit the osmotic pressure of 16.4 atm is

A non-ideal gas obeys the equation PV = RT + BP, where V is the molar volume and B is 10 L/mol. If one mole of the gas is expanded isothermally and reversibly at 27°C from 20 atm to 2 atm, calculate ΔU and ΔH ( jee advance 1997)

How reducing nature is inversely proportional to ionisation potential?

Find the number of degrees of freedom of molecules in a gas whose molar heat capacity at constant pressure is equal to CP=29 J/(mol.K)

Which of the following will react with water?

Hio4 converts primary, secondary , and tertiary alcohol in what

What is a point and an extended object

What properties do fullerenes have?

The solubility in water of a sparingly soluble salt PbBr2 is 6.6×10−6 mol L−1. What is the concentration of Br−(aq) in a saturated solution of PbBr2(s)?(1.65)13=1.18

Calculate normality of 2.1% (w/V) H2SO4 solution.

An aqueous solution of a complex compound of formula Co (NH3)5Br (SO4)reacts readily with aqueous AgNO3 to give a yellowish white precipitate.write down the structural formula of the complex and mention the reaction involved.

When 0.05 moles of H2 is mixed with CO, what is the number of moles of methanol (CH3OH) that can be obtained? (CH3OH is the only product)

EXPLANATIONS OF ELLINGHAM DIAGRAM

The boiling point of pure water is 100 ∘C. Calculate the boiling point of an aqueous solution containing 0.6 g of urea (molar mass = 60 g mol−1) in 100 g of water. Kb for water is 0.52 K kg mol−1.

What is anode mud?

The complex which is paramagnetic?

Of the following, the most stable hydride is

Dimentional formula for volume charge density

(a) Specify the charge is carried by anions? What happens to an element ‘A’ if its atom gains two electrons?(b) Classify the substances given below into elements and compounds. NaCl, Cu, CaCO3, Zn, O2, H2O, F2, Hg, Diamond

A Carnot engine, having an efficiency of η=110 as heat engine, is used as a refrigerator. If the work done on the system is 10 J, the amount of energy absorbed from the reservoir at lower temperature is (in J)

Calculate bond order of \lbrack He-H\rbrack^+ from molecular orbital theory

x, y and z are marked for hydrogen atoms in the following molecule which have Ka values respectively as

if the function f : A -> A , A={1,2,3,4} then find the total number of onto function