46295 + Interview Questions in Chemistry

1.	Diborane forms adduct with
Answer» Diborane forms adduct with

Discussion

2.	Number of compounds given above where keto form is more dominationg than enol form in benzene solvent, is:
Answer» Number of compounds given above where keto form is more dominationg than enol form in benzene solvent, is:

Discussion

3.	boron exist as two isotopes ^{10}B and ^{11}B if atomic mass of boron in periodic table is given to 10.81 what is the relative abundance of the heaver isotop?
Answer» boron exist as two isotopes ^{10}B and ^{11}B if atomic mass of boron in periodic table is given to 10.81 what is the relative abundance of the heaver isotop?

Discussion

4.	Meaning of hydrolised
Answer» Meaning of hydrolised

Discussion

5.	Let's take a piece of wood and put it in water and get it out after a minute. What kind of adsorption do you think would be at play here?
Answer» Let's take a piece of wood and put it in water and get it out after a minute. What kind of adsorption do you think would be at play here?

Discussion

6.	Which of the following compounds was the starting material for the oxidation shown below?
Answer» Which of the following compounds was the starting material for the oxidation shown below?

Discussion

7.	Th234 disintegrates and emits 6β- and 7α-particles to form a stable element. Find the atomic number and mass number of the stable product. Also identify the element. (IIT-JEE, 2004)
Answer» $T h^{234}$ disintegrates and emits 6β- and 7α-particles to form a stable element. Find the atomic number and mass number of the stable product. Also identify the element. (IIT-JEE, 2004)

Discussion

8.	Final product (B) is:
Answer» Final product (B) is:

Discussion

9.	The electronic configuration of Sc is:
Answer» The electronic configuration of $S c$ is:

Discussion

10.	Q. The equivalent mass of H3PO4 (Molecular weight = 98 g/mol) and Na2HPO4 (Molecular weight = 142 g/mol) in the reaction are respectively :- H3PO4 + 2NaOH → Na2HPO4 + 2H2O(1) 49, 142 (2) 49, 71(3) 98, 71(4) 98, 142
Answer» Q. The equivalent mass of H3PO4 (Molecular weight = 98 g/mol) and Na2HPO4 (Molecular weight = 142 g/mol) in the reaction are respectively :- H3PO4 + 2NaOH → Na2HPO4 + 2H2O (1) 49, 142 (2) 49, 71 (3) 98, 71 (4) 98, 142

Discussion

11.	Which of the following will exhibit chirality?
Answer» Which of the following will exhibit chirality?

Discussion

12.	Name two metallic properties other than malleability and sonorus nature
Answer» Name two metallic properties other than malleability and sonorus nature

Discussion

13.	Energy barrier between staggered and eclipsed conformation of ethane is?
Answer» Energy barrier between staggered and eclipsed conformation of ethane is?

Discussion

14.	balance the equation-(NH4)3PO4+Pb(NO3)4-----------Pb3(PO4)4+NH4NO3
Answer» balance the equation- (NH4)3PO4+Pb(NO3)4-----------Pb3(PO4)4+NH4NO3

Discussion

15.	concider a semicircular ring of radius R . its linear mass density b varies as λ=λ_p
Answer» concider a semicircular ring of radius R . its linear mass density b varies as λ=λ_p

Discussion

16.	18. The element z=114 belongs to which family group?
Answer» 18. The element z=114 belongs to which family group?

Discussion

17.	36. fluorine react with water release oxygen but chlorine bromine reacts with water released Hydrohalic acid or hypohalous acid but iodine reacts with water release iodine gas why?there is any relationship to that SRP.
Answer» 36. fluorine react with water release oxygen but chlorine bromine reacts with water released Hydrohalic acid or hypohalous acid but iodine reacts with water release iodine gas why?there is any relationship to that SRP.

Discussion

18.	36 g of organic substance is present in one litre of solution at 200 K .The osmotic pressure of a solution is 1.8×105 Pa .Calculate the molecular mass of the substance.Take R=8.3 J mol−1 K−1
Answer» $36 g$ of organic substance is present in one litre of solution at $200 K$ . The osmotic pressure of a solution is $1.8 \times 10^{5} P a$ . Calculate the molecular mass of the substance. Take $R = 8.3 J m o l^{- 1} K^{- 1}$

Discussion

19.	41. Electrolytic reduction of nitrobenzene in weakly acidic medium gives (a) aniline (b)nitrosobenzene (c)N-phenylhydroxylamine (d)p-hydroxyaniline
Answer» 41. Electrolytic reduction of nitrobenzene in weakly acidic medium gives (a) aniline (b)nitrosobenzene (c)N-phenylhydroxylamine (d)p-hydroxyaniline

Discussion

20.	For the strong electrolytes NaOH, NaCl and BaCl2, the molar ionic conductances at infinite dilution are 248.1×10−4,126.5×10−4 and 280.0×10−4 S m2 mol−1, respectively. Calculate Λ∘mfor Ba(OH)2:
Answer» For the strong electrolytes NaOH, NaCl and $B a C l_{2},$ the molar ionic conductances at infinite dilution are $248.1 \times 10^{- 4}, 126.5 \times 10^{- 4} a n d 280.0 \times 10^{- 4} S m^{2} m o l^{- 1},$ respectively. Calculate $Λ_{m}^{\circ} for B a (O H)_{2}$ :

Discussion

21.	Intermediates formed during the reaction RCONH2 with Br2 and KOH are
Answer» Intermediates formed during the reaction RCONH₂ with Br₂ and KOH are

Discussion

22.	3.arrange the following atom in the order of inc. value of first ionisation energy:- Sr,Cs,S,N
Answer» 3.arrange the following atom in the order of inc. value of first ionisation energy:- Sr,Cs,S,N

Discussion

23.	a certain diatomic molecule ,AB has dipole moment 1.6 D and the internuclear dis†an ce is 100pm .the percentage of electronic charge existing on more electronegative atom is HANVEN'T unders†an d solution provided before
Answer» a certain diatomic molecule ,AB has dipole moment 1.6 D and the internuclear dis†an ce is 100pm .the percentage of electronic charge existing on more electronegative atom is HANVEN'T unders†an d solution provided before

Discussion

24.	Find the ratio of the difference in energy between the first and the second Bohr's orbit to that between the second and third Bohr's orbit of a hydrogen atom.
Answer» Find the ratio of the difference in energy between the first and the second Bohr's orbit to that between the second and third Bohr's orbit of a hydrogen atom.

Discussion

25.	what is aqueous solution
Answer» what is aqueous solution

Discussion

26.	Which of the following ions is coloured in solution?
Answer» Which of the following ions is coloured in solution?

Discussion

27.	If two identical spheres having 16 micro coulomb and -8 micro coulomb are kept at certain distance apart, then the force is F. They are touched and again kept at the same distance the once becomes
Answer» If two identical spheres having 16 micro coulomb and -8 micro coulomb are kept at certain distance apart, then the force is F. They are touched and again kept at the same distance the once becomes

Discussion

28.	how to find valence electron ? which is the appropriate method .
Answer» how to find valence electron ? which is the appropriate method .

Discussion

29.	The oxidation state of S in Na2S2O3 is
Answer» The oxidation state of $S$ in $N a_{2} S_{2} O_{3}$ is

Discussion

30.	Which species does not exist -
Answer» Which species does not exist -

Discussion

31.	One mole of calcium phosphide on reaction with excess of water gives:
Answer» One mole of calcium phosphide on reaction with excess of water gives:

Discussion

32.	At 0.1 atm and 25∘C, compressibility factor of four gases A, B, C and D are 0.25, 1.3, 1 and 0.7 respectively. The gas which is most easily liquifiable at 25∘C, will be.
Answer» At $0.1 a t m$ and $25^{\circ} C$ , compressibility factor of four gases $A, B, C$ and $D$ are $0.25, 1.3, 1 a n d 0.7$ respectively. The gas which is most easily liquifiable at $25^{\circ} C,$ will be.

Discussion

33.	What is the oxidation state of S in H_2S_2O_5 (1) +6 (2) +4 (3) +3 (4) +
Answer» What is the oxidation state of S in H_2S_2O_5 (1) +6 (2) +4 (3) +3 (4) +

Discussion

34.	Which of the following ions can form coloured compounds?
Answer» Which of the following ions can form coloured compounds?

Discussion

35.	What is the oxidation state of Manganese in Manganese (VII) oxide?
Answer» What is the oxidation state of Manganese in Manganese (VII) oxide?

Discussion

36.	27. Why Bronsted acids are not lewis acids ?
Answer» 27. Why Bronsted acids are not lewis acids ?

Discussion

37.	Does cathode ray pass through only if the anode has perforations? can't the cathode ray just pass through the anode?
Answer» Does cathode ray pass through only if the anode has perforations? can't the cathode ray just pass through the anode?

37.

Does cathode ray pass through only if the anode has perforations? can't the cathode ray just pass through the anode?

Answer»

Does cathode ray pass through only if the anode has perforations?

can't the cathode ray just pass through the anode?

Discussion

38.	57. 0.1mole Bacl2 is mixed with 0.3mole Na3PO4.Calculate the maximum amount of (BaPO4)2 formed.
Answer» 57. 0.1mole Bacl2 is mixed with 0.3mole Na3PO4.Calculate the maximum amount of (BaPO4)2 formed.

Discussion

39.	The number of structural isomers of M is:
Answer» The number of structural isomers of M is:

Discussion

40.	Which method is suitable to separate tea leaves from chai? In which case can we use magnetic separation? Name two sublime substances.
Answer» Which method is suitable to separate tea leaves from chai? In which case can we use magnetic separation? Name two sublime substances.

Discussion

41.	Calculate the molality of 1 lt. solution of 93% sulphuric acid .The density of the solution is 1.84 gram per mole
Answer» Calculate the molality of 1 lt. solution of 93% sulphuric acid .The density of the solution is 1.84 gram per mole

Discussion

42.	The electronic configuration of Ti is 1s2 2s2 2p6 3s2 3p6 3d2 4s2 and it represents
Answer» The electronic configuration of Ti is 1 $s^{2}$ 2 $s^{2}$ 2 $p^{6}$ 3 $s^{2}$ 3 $p^{6}$ 3 $d^{2}$ 4 $s^{2}$ and it represents

Discussion

43.	70. When 4.2g NaHCO_3 reacts the 10g acetic acid, CO_2 formed is 2.3g and mass of solution is 12g. Show that these data confirm the law of conservation of mass
Answer» 70. When 4.2g NaHCO_3 reacts the 10g acetic acid, CO_2 formed is 2.3g and mass of solution is 12g. Show that these data confirm the law of conservation of mass

Discussion

44.	The correct order of thermal stability of hydrogen halides (H – X) is
Answer» The correct order of thermal stability of hydrogen halides (H – X) is

Discussion

45.	Figure10.24 (a) shows a thin liquid film supporting a small weight = 4.5 ×10–2N. What is the weight supported by a film of the same liquid at thesame temperature in Fig. (b) and (c)? Explain your answer physically.
Answer» Figure 10.24 (a) shows a thin liquid film supporting a small weight = 4.5 × 10^–2 N. What is the weight supported by a film of the same liquid at the same temperature in Fig. (b) and (c)? Explain your answer physically.

45.

Figure10.24 (a) shows a thin liquid film supporting a small weight = 4.5 ×10–2N. What is the weight supported by a film of the same liquid at thesame temperature in Fig. (b) and (c)? Explain your answer physically.

Answer»

Figure
10.24 (a) shows a thin liquid film supporting a small weight = 4.5 ×
10^–2
N. What is the weight supported by a film of the same liquid at the
same temperature in Fig. (b) and (c)? Explain your answer physically.

Discussion

46.	How many electrons in an atom may have the following quantum numbers? (a) n = 4, m=−12 m=-\frac{1}{2} m=−12 (b) n = 3, l = 0
Answer» How many electrons in an atom may have the following quantum numbers? (a) n = 4, $m=-\frac{1}{2}$ $\frac{1}{2}$ (b) n = 3, l = 0

Discussion

47.	What happens when phenol reacts with ethanoic acid??
Answer» What happens when phenol reacts with ethanoic acid??

Discussion

48.	Remplace les mots en italique par les pronoms possessifs convenables: Exemple: Ta chambre est grande, sa chambre est petite. Ta chambre est grande, la sienne est petite.1. Mon voisin est professeur, votre voisin est architecte.2. Ton médecin n'est pas en ville, allons consulter mon médecin.3. Mon père est dentiste et son père est chirurgien.4. Le père d'Akanksha travaille à l'Ambassade de l'Inde, notre père travaille chez IBM.5. J'ai terminé mes leçons, mais ils n'ont pas terminé leurs leçons .
Answer» Remplace les mots en italique par les pronoms possessifs convenables: Exemple: Ta chambre est grande, sa chambre est petite. Ta chambre est grande, la sienne est petite. 1. Mon voisin est professeur, votre voisin est architecte. 2. Ton médecin n'est pas en ville, allons consulter mon médecin. 3. Mon père est dentiste et son père est chirurgien. 4. Le père d'Akanksha travaille à l'Ambassade de l'Inde, notre père travaille chez IBM. 5. J'ai terminé mes leçons, mais ils n'ont pas terminé leurs leçons .

Discussion

49.	Molarity, molality normality , formality
Answer» Molarity, molality normality , formality

Discussion

50.	An equimolar mixture of NaX2O4 and H2C2O4 acid required V1L of 0.1M KMnO4 in acidic medium to complete oxidation.same mixture required V2L of 0.1 M NaOH for neutralisation . calculate the ratio of V1 and V2
Answer» An equimolar mixture of NaX2O4 and H2C2O4 acid required V1L of 0.1M KMnO4 in acidic medium to complete oxidation.same mixture required V2L of 0.1 M NaOH for neutralisation . calculate the ratio of V1 and V2

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Diborane forms adduct with

Number of compounds given above where keto form is more dominationg than enol form in benzene solvent, is:

boron exist as two isotopes ^{10}B and ^{11}B if atomic mass of boron in periodic table is given to 10.81 what is the relative abundance of the heaver isotop?

Meaning of hydrolised

Let's take a piece of wood and put it in water and get it out after a minute. What kind of adsorption do you think would be at play here?

Which of the following compounds was the starting material for the oxidation shown below?

Th234 disintegrates and emits 6β- and 7α-particles to form a stable element. Find the atomic number and mass number of the stable product. Also identify the element. (IIT-JEE, 2004)

Final product (B) is:

The electronic configuration of Sc is:

Q. The equivalent mass of H3PO4 (Molecular weight = 98 g/mol) and Na2HPO4 (Molecular weight = 142 g/mol) in the reaction are respectively :- H3PO4 + 2NaOH → Na2HPO4 + 2H2O(1) 49, 142 (2) 49, 71(3) 98, 71(4) 98, 142

Which of the following will exhibit chirality?

Name two metallic properties other than malleability and sonorus nature

Energy barrier between staggered and eclipsed conformation of ethane is?

balance the equation-(NH4)3PO4+Pb(NO3)4-----------Pb3(PO4)4+NH4NO3

concider a semicircular ring of radius R . its linear mass density b varies as λ=λ_p

18. The element z=114 belongs to which family group?

36. fluorine react with water release oxygen but chlorine bromine reacts with water released Hydrohalic acid or hypohalous acid but iodine reacts with water release iodine gas why?there is any relationship to that SRP.

36 g of organic substance is present in one litre of solution at 200 K .The osmotic pressure of a solution is 1.8×105 Pa .Calculate the molecular mass of the substance.Take R=8.3 J mol−1 K−1

41. Electrolytic reduction of nitrobenzene in weakly acidic medium gives (a) aniline (b)nitrosobenzene (c)N-phenylhydroxylamine (d)p-hydroxyaniline

For the strong electrolytes NaOH, NaCl and BaCl2, the molar ionic conductances at infinite dilution are 248.1×10−4,126.5×10−4 and 280.0×10−4 S m2 mol−1, respectively. Calculate Λ∘mfor Ba(OH)2:

Intermediates formed during the reaction RCONH2 with Br2 and KOH are

3.arrange the following atom in the order of inc. value of first ionisation energy:- Sr,Cs,S,N

a certain diatomic molecule ,AB has dipole moment 1.6 D and the internuclear dis†an ce is 100pm .the percentage of electronic charge existing on more electronegative atom is HANVEN'T unders†an d solution provided before

Find the ratio of the difference in energy between the first and the second Bohr's orbit to that between the second and third Bohr's orbit of a hydrogen atom.

what is aqueous solution

Which of the following ions is coloured in solution?

If two identical spheres having 16 micro coulomb and -8 micro coulomb are kept at certain distance apart, then the force is F. They are touched and again kept at the same distance the once becomes

how to find valence electron ? which is the appropriate method .

The oxidation state of S in Na2S2O3 is

Which species does not exist -

One mole of calcium phosphide on reaction with excess of water gives:

At 0.1 atm and 25∘C, compressibility factor of four gases A, B, C and D are 0.25, 1.3, 1 and 0.7 respectively. The gas which is most easily liquifiable at 25∘C, will be.

What is the oxidation state of S in H_2S_2O_5 (1) +6 (2) +4 (3) +3 (4) +

Which of the following ions can form coloured compounds?

What is the oxidation state of Manganese in Manganese (VII) oxide?

27. Why Bronsted acids are not lewis acids ?

Does cathode ray pass through only if the anode has perforations? can't the cathode ray just pass through the anode?

57. 0.1mole Bacl2 is mixed with 0.3mole Na3PO4.Calculate the maximum amount of (BaPO4)2 formed.

The number of structural isomers of M is:

Which method is suitable to separate tea leaves from chai? In which case can we use magnetic separation? Name two sublime substances.

Calculate the molality of 1 lt. solution of 93% sulphuric acid .The density of the solution is 1.84 gram per mole

The electronic configuration of Ti is 1s2 2s2 2p6 3s2 3p6 3d2 4s2 and it represents

70. When 4.2g NaHCO_3 reacts the 10g acetic acid, CO_2 formed is 2.3g and mass of solution is 12g. Show that these data confirm the law of conservation of mass

The correct order of thermal stability of hydrogen halides (H – X) is

Figure10.24 (a) shows a thin liquid film supporting a small weight = 4.5 ×10–2N. What is the weight supported by a film of the same liquid at thesame temperature in Fig. (b) and (c)? Explain your answer physically.

How many electrons in an atom may have the following quantum numbers? (a) n = 4, m=−12 m=-\frac{1}{2} m=−​12 (b) n = 3, l = 0

What happens when phenol reacts with ethanoic acid??

Molarity, molality normality , formality

An equimolar mixture of NaX2O4 and H2C2O4 acid required V1L of 0.1M KMnO4 in acidic medium to complete oxidation.same mixture required V2L of 0.1 M NaOH for neutralisation . calculate the ratio of V1 and V2

How many electrons in an atom may have the following quantum numbers? (a) n = 4, m=−12 m=-\frac{1}{2} m=−12 (b) n = 3, l = 0