46295 + Interview Questions in Chemistry

1.	13.Identify the correct order of boiling points of the following compounds (A) CH3 CH2 CH2 CH2 OH (B)CH3 CH2 CH2 CHO C) CH3 CH2 CH2 COOH (1) 1>2>3 (2) 3>1>2 (3) 1>3>2 (4) 3>2>1
Answer» 13.Identify the correct order of boiling points of the following compounds (A) CH3 CH2 CH2 CH2 OH (B)CH3 CH2 CH2 CHO C) CH3 CH2 CH2 COOH (1) 1>2>3 (2) 3>1>2 (3) 1>3>2 (4) 3>2>1

Discussion

2.	The oxidation of ammonia happens by this reaction:4NH3(g)+3O2(g)⟶2N2(g)+6H2O(g), if the rate of formation of N2 is 0.5 molL−1s−1 then, the rate at which NH3 gets consumed is:
Answer» The oxidation of ammonia happens by this reaction: $4 N H_{3} (g) + 3 O_{2} (g) ⟶ 2 N_{2} (g) + 6 H_{2} O (g)$ , if the rate of formation of $N_{2}$ is $0.5 m o l L^{- 1} s^{- 1}$ then, the rate at which $N H_{3}$ gets consumed is:

Discussion

3.	How many cyclic isomers of c6h10 having no double bond?
Answer» How many cyclic isomers of c6h10 having no double bond?

Discussion

4.	20.Calculate the molarity of 20percent solution of KOH by mass whose density is 1.02g/ml
Answer» 20.Calculate the molarity of 20percent solution of KOH by mass whose density is 1.02g/ml

Discussion

5.	An aqueous solution of ammonia consists of
Answer» An aqueous solution of ammonia consists of

Discussion

6.	29. What are the masses of different elements in 40g Al2(SO4)3?
Answer» 29. What are the masses of different elements in 40g Al2(SO4)3?

Discussion

7.	How many aldol products formed by the reaction of acetaldehyde with butan-2-one?
Answer» How many aldol products formed by the reaction of acetaldehyde with butan-2-one?

Discussion

8.	A balloon containing 1 mol of air initiallyat 1 atm is filled further with air till the pressure increases to 4 atm. The initial diameter of the balloon is 1 m and the pressure at each stage is proportional to diameter of the balloon. How many moles of air was to change the pressure from 1 atm to 4 atm?
Answer» A balloon containing 1 mol of air initiallyat 1 atm is filled further with air till the pressure increases to 4 atm. The initial diameter of the balloon is $1 m$ and the pressure at each stage is proportional to diameter of the balloon. How many moles of air was to change the pressure from 1 atm to 4 atm?

Discussion

9.	At room temperature, the eclipsed and staggered form of ethane cannot be isolated because:
Answer» At room temperature, the eclipsed and staggered form of ethane cannot be isolated because:

Discussion

10.	A compound was formed to contain 14.34%O2 the minimum Molecular wt of the compound
Answer» A compound was formed to contain 14.34%O2 the minimum Molecular wt of the compound

Discussion

11.	Why BF_{3 }reacts with water but NF_3 does not give any reaction with water
Answer» Why BF_{3 }reacts with water but NF_3 does not give any reaction with water

Discussion

12.	Question 7(c)What is the mass of:(c) 10 moles of sodium sulphite (Na2SO3)?
Answer» Question 7(c) What is the mass of: (c) 10 moles of sodium sulphite $(N a_{2} S O_{3})$ ?

Discussion

13.	When 15.0 g of a polyhydroxy compound Q is completely acetylated with acetic anhydride in pyridine, 31.8 g of an acetylated compound is formed. How many grams of a completely methylated product of Q will be formed when, Q is completely methylated with CH3I/Ag2O?
Answer» When 15.0 g of a polyhydroxy compound Q is completely acetylated with acetic anhydride in pyridine, 31.8 g of an acetylated compound is formed. How many grams of a completely methylated product of Q will be formed when, Q is completely methylated with $C H_{3} I / A g_{2} O$ ?

Discussion

14.	4 moles of PCl5 dissociates at 760 k in 2 litre flask, at equilibrium. 0.8 mole of Cl2 was present in flask. The euilibrium cons†an t would be
Answer» 4 moles of PCl5 dissociates at 760 k in 2 litre flask, at equilibrium. 0.8 mole of Cl2 was present in flask. The euilibrium cons†an t would be

Discussion

15.	Most stable conformation of 1-isopropyl-4-methylcyclohexane is:
Answer» Most stable conformation of 1-isopropyl-4-methylcyclohexane is:

Discussion

16.	12.8n compounds x, all the bond angels are exactly 109^° 28'. X is : 1. Chloromethane 2. Carbon tetrachloride 3. Iodoform 4. Chloroform
Answer» 12.8n compounds x, all the bond angels are exactly 109^° 28'. X is : 1. Chloromethane 2. Carbon tetrachloride 3. Iodoform 4. Chloroform

Discussion

17.	Which of the following has least de-broglie wavelength ? (1) electron (2) p (3) CO2 (4) SO2
Answer» Which of the following has least de-broglie wavelength ? (1) electron (2) p (3) CO2 (4) SO2

Discussion

18.	How should we add two numbers like 10√2 + 10. Should we add it like 10+10√2 = 20√2?
Answer» How should we add two numbers like 10√2 + 10. Should we add it like 10+10√2 = 20√2?

Discussion

19.	what is born haber cycle?
Answer» what is born haber cycle?

Discussion

20.	15. Consider the reactions the mechanism of reaction 1 and 2 are respectively 1) SN2 and SN2 2) SN2 and SN1 3) SN1 and SN2 4) SN1 and SN1
Answer» 15. Consider the reactions the mechanism of reaction 1 and 2 are respectively 1) SN2 and SN2 2) SN2 and SN1 3) SN1 and SN2 4) SN1 and SN1

Discussion

21.	The degrees of freedom of Oxygen gas molecule at normal temperature is:
Answer» The degrees of freedom of Oxygen gas molecule at normal temperature is:

Discussion

22.	Structure shown here represents:
Answer» Structure shown here represents:

22.

Structure shown here represents:

Answer»

Structure shown here represents:

Discussion

23.	What are quantum numbers and what is limiting reagent
Answer» What are quantum numbers and what is limiting reagent

Discussion

24.	27. 16 gm of O2 expand at constant pressure and 273.15 K to occupy double its original volume. The work doneduring the process will be(1) w-260 cal(2) w-180 cal(3) w-130 cal(4) w-273.15 calIf the wor
Answer» 27. 16 gm of O2 expand at constant pressure and 273.15 K to occupy double its original volume. The work doneduring the process will be(1) w-260 cal(2) w-180 cal(3) w-130 cal(4) w-273.15 calIf the wor

Discussion

25.	Acetone and water are ____ liquids and can be separated by ___ .
Answer» Acetone and water are ____ liquids and can be separated by ___ .

Discussion

26.	For the given sequence of the reactions: A+2B→2C+D yield=50% C+12E→4F+3G yield=20% 2F+3H→2I+J yiled=30% If 10 moles of A reacts with 21 moles of B then find the number of moles of I produced by 11 mol of H if E is present in excess.
Answer» For the given sequence of the reactions: $A + 2 B \to 2 C + D y i e l d = 50 %$ $C + 12 E \to 4 F + 3 G y i e l d = 20 %$ $2 F + 3 H \to 2 I + J y i l e d = 30 %$ If 10 moles of A reacts with 21 moles of B then find the number of moles of I produced by 11 mol of H if E is present in excess.

Discussion

27.	How are 0.50 mol Na2CO3 and.0.50 M Na2CO3 different?
Answer» How are 0.50 mol Na2CO3 and.0.50 M Na2CO3 different?

Discussion

28.	When glycerol is heated with khso4 , the reaction mechanism will be
Answer» When glycerol is heated with khso4 , the reaction mechanism will be

Discussion

29.	The molecular mass of butyric acid was determined by experiment to be 88 gmol−1. What is the molecular formula? Empirical formula=.C2H4O
Answer» The molecular mass of butyric acid was determined by experiment to be 88 $g m o l^{- 1}$ . What is the molecular formula? Empirical formula=. $C_{2} H_{4} O$

Discussion

30.	Choose the correct order of the basic nature of the below given amines.A. Phenyl methanamineB. N, N-DimethylanilineC. N-Methyl anilineD. Benzenamine
Answer» Choose the correct order of the basic nature of the below given amines. A. Phenyl methanamine B. N, N-Dimethylaniline C. N-Methyl aniline D. Benzenamine

Discussion

31.	71 Calculate the amount of (NH4)2SO4 which must be added to 500 ml of 0.2 (M) NH3 to yield asolution of pH = 9.35. (pKb(NH4OH) = 4.74 )
Answer» 71 Calculate the amount of (NH4)2SO4 which must be added to 500 ml of 0.2 (M) NH3 to yield asolution of pH = 9.35. (pKb(NH4OH) = 4.74 )

Discussion

32.	In Millikan's experiment, an oil drop having chargege q get stationary on applying a potential difference V inbetween two plates separated by a distance d. The weight of the drop is
Answer» In Millikan's experiment, an oil drop having chargege q get stationary on applying a potential difference V inbetween two plates separated by a distance d. The weight of the drop is

Discussion

33.	What is the mechanism of rimar teeman reaction
Answer» What is the mechanism of rimar teeman reaction

Discussion

34.	What is difference between alkyl and aryl halides
Answer» What is difference between alkyl and aryl halides

Discussion

35.	What is the reaction that takes place at the standard hydrogen electrode if it's coupled with metal-metal ion electrode of zinc (zinc in zinc sulphate solution).
Answer» What is the reaction that takes place at the standard hydrogen electrode if it's coupled with metal-metal ion electrode of zinc (zinc in zinc sulphate solution).

Discussion

36.	What is meant by inert pair effect? explain.
Answer» What is meant by inert pair effect? explain.

Discussion

37.	Q 24/40 A 10L flask contains 0.2 mole of CH4 and 0.3 mole ofhydrogen at 25C. Then, the total pressure inside the flask is
Answer» Q 24/40 A 10L flask contains 0.2 mole of CH4 and 0.3 mole ofhydrogen at 25C. Then, the total pressure inside the flask is

Discussion

38.	The species Ar, K+ and Ca2+ contain the same number of electrons. In which order do their radii increase ?
Answer» The species Ar, $K^{+}$ and $C a^{2 +}$ contain the same number of electrons. In which order do their radii increase ?

Discussion

39.	When we increase the acid volume in water, H+ or OH− ions are released, then :
Answer» When we increase the acid volume in water, $H^{+}$ or ${O H}^{-}$ ions are released, then :

Discussion

40.	Identify Z in the sequence of reaction, CH3CH2CH=CH2HBr/H2O2→YC2H5ONa→Z
Answer» Identify Z in the sequence of reaction, $C H_{3} C H_{2} C H = C H_{2} H B r / H_{2} O_{2} \to Y C_{2} H_{5} O N a \to Z$

Discussion

41.	In presence of external magnetic field, f orbital is 7 fold degenerate or non degenerate??
Answer» In presence of external magnetic field, f orbital is 7 fold degenerate or non degenerate??

Discussion

42.	What will be the enthalpy of atomisation of hydrogen molecule it its bond dissociation entalpy is x kj/mol
Answer» What will be the enthalpy of atomisation of hydrogen molecule it its bond dissociation entalpy is x kj/mol

Discussion

43.	The correct structure of ethylenediaminetraacetic acid (EDTA) is
Answer» The correct structure of ethylenediaminetraacetic acid (EDTA) is

Discussion

44.	33 Convert: Ethyne to 2,2-Dibromopropane.
Answer» 33 Convert: Ethyne to 2,2-Dibromopropane.

Discussion

45.	The specific heat of a metal is 0.16 its approximate atomic weight would be
Answer» The specific heat of a metal is 0.16 its approximate atomic weight would be

Discussion

46.	Xe forms compound with only F and O why?
Answer» Xe forms compound with only F and O why?

Discussion

47.	A negatively charged sol can be formed by peptizing a solution of
Answer» A negatively charged sol can be formed by peptizing a solution of

Discussion

48.	If tanA=a/b ,then value of cos2A is
Answer» If tanA=a/b ,then value of cos2A is

Discussion

49.	5 holes of ideal gas expand isothermally and reversibly from a pressure of 10 atmosphere to 2 atmosphere at 300 Kelvin what is largest mass approximate which can be lifted through a height of 1 m in this expansion
Answer» 5 holes of ideal gas expand isothermally and reversibly from a pressure of 10 atmosphere to 2 atmosphere at 300 Kelvin what is largest mass approximate which can be lifted through a height of 1 m in this expansion

Discussion

50.	UseHund’s rule to derive the electronic configuration of Ce3+ion and calculate its magnetic moment on the basis of ‘spin-only’formula.
Answer» Use Hund’s rule to derive the electronic configuration of Ce³⁺ ion and calculate its magnetic moment on the basis of ‘spin-only’ formula.

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

13.Identify the correct order of boiling points of the following compounds (A) CH3 CH2 CH2 CH2 OH (B)CH3 CH2 CH2 CHO C) CH3 CH2 CH2 COOH (1) 1>2>3 (2) 3>1>2 (3) 1>3>2 (4) 3>2>1

The oxidation of ammonia happens by this reaction:4NH3(g)+3O2(g)⟶2N2(g)+6H2O(g), if the rate of formation of N2 is 0.5 molL−1s−1 then, the rate at which NH3 gets consumed is:

How many cyclic isomers of c6h10 having no double bond?

20.Calculate the molarity of 20percent solution of KOH by mass whose density is 1.02g/ml

An aqueous solution of ammonia consists of

29. What are the masses of different elements in 40g Al2(SO4)3?

How many aldol products formed by the reaction of acetaldehyde with butan-2-one?

At room temperature, the eclipsed and staggered form of ethane cannot be isolated because:

A compound was formed to contain 14.34%O2 the minimum Molecular wt of the compound

Why BF_{3 }reacts with water but NF_3 does not give any reaction with water

Question 7(c)What is the mass of:(c) 10 moles of sodium sulphite (Na2SO3)?

When 15.0 g of a polyhydroxy compound Q is completely acetylated with acetic anhydride in pyridine, 31.8 g of an acetylated compound is formed. How many grams of a completely methylated product of Q will be formed when, Q is completely methylated with CH3I/Ag2O?

4 moles of PCl5 dissociates at 760 k in 2 litre flask, at equilibrium. 0.8 mole of Cl2 was present in flask. The euilibrium cons†an t would be

Most stable conformation of 1-isopropyl-4-methylcyclohexane is:

12.8n compounds x, all the bond angels are exactly 109^° 28'. X is : 1. Chloromethane 2. Carbon tetrachloride 3. Iodoform 4. Chloroform

Which of the following has least de-broglie wavelength ? (1) electron (2) p (3) CO2 (4) SO2

How should we add two numbers like 10√2 + 10. Should we add it like 10+10√2 = 20√2?

what is born haber cycle?

15. Consider the reactions the mechanism of reaction 1 and 2 are respectively 1) SN2 and SN2 2) SN2 and SN1 3) SN1 and SN2 4) SN1 and SN1

The degrees of freedom of Oxygen gas molecule at normal temperature is:

Structure shown here represents:

What are quantum numbers and what is limiting reagent

27. 16 gm of O2 expand at constant pressure and 273.15 K to occupy double its original volume. The work doneduring the process will be(1) w-260 cal(2) w-180 cal(3) w-130 cal(4) w-273.15 calIf the wor

Acetone and water are ____ liquids and can be separated by ___ .

For the given sequence of the reactions: A+2B→2C+D yield=50% C+12E→4F+3G yield=20% 2F+3H→2I+J yiled=30% If 10 moles of A reacts with 21 moles of B then find the number of moles of I produced by 11 mol of H if E is present in excess.

How are 0.50 mol Na2CO3 and.0.50 M Na2CO3 different?

When glycerol is heated with khso4 , the reaction mechanism will be

The molecular mass of butyric acid was determined by experiment to be 88 gmol−1. What is the molecular formula? Empirical formula=.C2H4O

Choose the correct order of the basic nature of the below given amines.A. Phenyl methanamineB. N, N-DimethylanilineC. N-Methyl anilineD. Benzenamine

71 Calculate the amount of (NH4)2SO4 which must be added to 500 ml of 0.2 (M) NH3 to yield asolution of pH = 9.35. (pKb(NH4OH) = 4.74 )

In Millikan's experiment, an oil drop having chargege q get stationary on applying a potential difference V inbetween two plates separated by a distance d. The weight of the drop is

What is the mechanism of rimar teeman reaction

What is difference between alkyl and aryl halides

What is the reaction that takes place at the standard hydrogen electrode if it's coupled with metal-metal ion electrode of zinc (zinc in zinc sulphate solution).

What is meant by inert pair effect? explain.

Q 24/40 A 10L flask contains 0.2 mole of CH4 and 0.3 mole ofhydrogen at 25C. Then, the total pressure inside the flask is

The species Ar, K+ and Ca2+ contain the same number of electrons. In which order do their radii increase ?

When we increase the acid volume in water, H+ or OH− ions are released, then :

Identify Z in the sequence of reaction, CH3CH2CH=CH2HBr/H2O2→YC2H5ONa→Z

In presence of external magnetic field, f orbital is 7 fold degenerate or non degenerate??

What will be the enthalpy of atomisation of hydrogen molecule it its bond dissociation entalpy is x kj/mol

The correct structure of ethylenediaminetraacetic acid (EDTA) is

33 Convert: Ethyne to 2,2-Dibromopropane.

The specific heat of a metal is 0.16 its approximate atomic weight would be

Xe forms compound with only F and O why?

A negatively charged sol can be formed by peptizing a solution of

If tanA=a/b ,then value of cos2A is

5 holes of ideal gas expand isothermally and reversibly from a pressure of 10 atmosphere to 2 atmosphere at 300 Kelvin what is largest mass approximate which can be lifted through a height of 1 m in this expansion

UseHund’s rule to derive the electronic configuration of Ce3+ion and calculate its magnetic moment on the basis of ‘spin-only’formula.

Acetone and water are __ liquids and can be separated by _ .