46295 + Interview Questions in Chemistry

1.	Reaction of x g of Sn with HCl quantitatively produced a salt. Entire amount of the salt reacted with y g ofnitrobenzene in the presence of required amount of HCl to produce 1.29 g of an organic salt (quantitatively).(Use Molar masses in g mol–1 of H, C, N, O, Cl and Sn as 1, 12, 14, 16, 35 and 119 , respectively).The value of y is
Answer» Reaction of $x g$ of $S n$ with $H C l$ quantitatively produced a salt. Entire amount of the salt reacted with $y g$ of nitrobenzene in the presence of required amount of $H C l$ to produce $1.29 g$ of an organic salt (quantitatively). (Use Molar masses in $g m o l^{- 1}$ of $H, C, N, O, C l$ and $S n$ as $1, 12, 14, 16, 35$ and $119$ , respectively). The value of $y$ is

Discussion

2.	Which of the following explanation is best for not placing hydrogen in either the group of alkali metals or halogens
Answer» Which of the following explanation is best for not placing hydrogen in either the group of alkali metals or halogens

2.

Which of the following explanation is best for not placing hydrogen in either the group of alkali metals or halogens

Answer»

Which of the following explanation is best for not placing hydrogen in either the group of alkali metals or halogens

Discussion

3.	For the complex [Fe(CO)x] what is wrong:- 1. It is sigma-pi bonded organometallic compound 2. In the complex value of x=6 3. In the complex CO is Pi-acid ligand 4. It is trigonal bipyramidal shape
Answer» For the complex [Fe(CO)x] what is wrong:- 1. It is sigma-pi bonded organometallic compound 2. In the complex value of x=6 3. In the complex CO is Pi-acid ligand 4. It is trigonal bipyramidal shape

Discussion

4.	Write the general outer electronic configuration of s-, p-, d- and f- block elements.
Answer» Write the general outer electronic configuration of s-, p-, d- and f- block elements.

Discussion

5.	What is the term which is used for the increase in the count of RBC ?
Answer» What is the term which is used for the increase in the count of RBC ?

Discussion

6.	Which of the following is incorrect for carbene?
Answer» Which of the following is incorrect for carbene?

Discussion

7.	34. From word RAMLAL A.LL together but not A-A not together. B.Both LL and AA should never be together.
Answer» 34. From word RAMLAL A.LL together but not A-A not together. B.Both LL and AA should never be together.

Discussion

8.	An oxide of nitrogen has a molecular weight of 92. Find the total no.of electrons in one gram mole of that oxide
Answer» An oxide of nitrogen has a molecular weight of 92. Find the total no.of electrons in one gram mole of that oxide

Discussion

9.	18. Also no of oxygen atom present in 3gm of carbonate ion
Answer» 18. Also no of oxygen atom present in 3gm of carbonate ion

Discussion

10.	Question 44.For making cake, baking powder is taken. If at home your mother uses baking soda instead of baking powder in cake. How will it affect the taste of the cake and why ? How can baking soda be converted into baking powder ? What is the role of tartaric acid added to baking soda ?
Answer» Question 44. For making cake, baking powder is taken. If at home your mother uses baking soda instead of baking powder in cake. How will it affect the taste of the cake and why ? How can baking soda be converted into baking powder ? What is the role of tartaric acid added to baking soda ?

Discussion

11.	39. What is complex 1,2,3 and 4 in ETS and what do they consist of ?
Answer» 39. What is complex 1,2,3 and 4 in ETS and what do they consist of ?

Discussion

12.	26.Show that the circumfernce of the bhor orbit for the hydrogen atom is an intregral multiple of the de brogli wavelength associsted with electron revolving around the orbit.
Answer» 26.Show that the circumfernce of the bhor orbit for the hydrogen atom is an intregral multiple of the de brogli wavelength associsted with electron revolving around the orbit.

Discussion

13.	At 17C osmotic pressure of sugar solution was 580 tirr the solution is diluted and temperature is raised to 57C osmotic pressure become 165torr the extent of dilution is
Answer» At 17C osmotic pressure of sugar solution was 580 tirr the solution is diluted and temperature is raised to 57C osmotic pressure become 165torr the extent of dilution is

Discussion

14.	How to make the hybridization diagram (orbit mixing diagram ) of BrF5
Answer» How to make the hybridization diagram (orbit mixing diagram ) of BrF5

Discussion

15.	In which of the following arrangements the given sequence is not strictly according to the property indicated against it?
Answer» In which of the following arrangements the given sequence is not strictly according to the property indicated against it?

Discussion

16.	The enthalpy of neutralisation of oxalic acid by NaOH is –x kcal mol–1. What will be the dissociation energy of oxalic acid if enthalpy of neutralization of strong acid and strong base is –y kcal eq–1? Options: a-(2x + y) kcal mol–1 b- (2y – x) kcal mol–1 c-(–2y – x) kcal mol–1 d (2x – y) kcal mol–1
Answer» The enthalpy of neutralisation of oxalic acid by NaOH is –x kcal mol–1. What will be the dissociation energy of oxalic acid if enthalpy of neutralization of strong acid and strong base is –y kcal eq–1? Options: a-(2x + y) kcal mol–1 b- (2y – x) kcal mol–1 c-(–2y – x) kcal mol–1 d (2x – y) kcal mol–1

Discussion

17.	what is the quantity of NaOH present in 250cc of the solution ,so that it gives a pH=1
Answer» what is the quantity of NaOH present in 250cc of the solution ,so that it gives a pH=1

Discussion

18.	Do Any animal fixed in one place?
Answer» Do Any animal fixed in one place?

Discussion

19.	Reaction of primary amines with aldehyde yields [NCERT 1984; Manipal MEE 1995]
Answer» Reaction of primary amines with aldehyde yields [NCERT 1984; Manipal MEE 1995]

19.

Reaction of primary amines with aldehyde yields [NCERT 1984; Manipal MEE 1995]

Answer»

Reaction of primary amines with aldehyde yields

[NCERT 1984; Manipal MEE 1995]

Discussion

20.	The product of oxidation of I− with MnO−4 in alkaline medium is:
Answer» The product of oxidation of $I^{-}$ with $M n O_{4}^{-}$ in alkaline medium is:

Discussion

21.	Out of , which is an example of allylic halide?
Answer» Out of , which is an example of allylic halide?

Discussion

22.	Which of the following setups is correct to calculate the weight (in g) of KCIO3 produced fromthe reaction of 0.150 moles of Cl2? 3CI2+6KOH-5KCI+ KCIO3 + 3H20 (a) 0.150 moles Cl2 x1 mole KCIO 3/3 moles Cl2x 122.5 g/1 mole KCIO3 (b) 0.150 moles CI2 x1 mole KCIO 3/3 moles Cl2 x 1 mole KClO3/122.5 g (c) 0.150 moles Cl2 x 3 moles Cl2/1 mole KCIO 3 x 122.5 g/1 mole KCIO3 (d) 0.150 moles Cl2x3 moles Cl2/1 mole KCIO 3 x1 mole KclO3/122.5 g
Answer» Which of the following setups is correct to calculate the weight (in g) of KCIO3 produced fromthe reaction of 0.150 moles of Cl2? 3CI2+6KOH-5KCI+ KCIO3 + 3H20 (a) 0.150 moles Cl2 x1 mole KCIO 3/3 moles Cl2x 122.5 g/1 mole KCIO3 (b) 0.150 moles CI2 x1 mole KCIO 3/3 moles Cl2 x 1 mole KClO3/122.5 g (c) 0.150 moles Cl2 x 3 moles Cl2/1 mole KCIO 3 x 122.5 g/1 mole KCIO3 (d) 0.150 moles Cl2x3 moles Cl2/1 mole KCIO 3 x1 mole KclO3/122.5 g

Discussion

23.	GIVE 5 FEATURES (INCLUDING ROLE) OF THE ENZYMES -1. EcoR12. Hind\|\|3. Ligase
Answer» GIVE 5 FEATURES (INCLUDING ROLE) OF THE ENZYMES - 1. EcoR1 2. Hind\|\| 3. Ligase

Discussion

24.	According to Fajan's Rule, covalent character is most favoured in ______
Answer» According to Fajan's Rule, covalent character is most favoured in ______

Discussion

25.	9. Read the given statements carefully: Statement-1: Distilled water does not conduct electricity. Statement-2: Rain water conducts electricity due to the presence of inorganic acids like nitric acid. Now, choose the correct option. A) Both the statements are correct. B) Both the statements are incorrect. C) Only statement-1 is correct . D) Only statement-2 is correct.
Answer» 9. Read the given statements carefully: Statement-1: Distilled water does not conduct electricity. Statement-2: Rain water conducts electricity due to the presence of inorganic acids like nitric acid. Now, choose the correct option. A) Both the statements are correct. B) Both the statements are incorrect. C) Only statement-1 is correct . D) Only statement-2 is correct.

Discussion

26.	Calculate the work done when 5 moles of oxygen gas contracts isothermally from 85 L to 15 L against a constant pressure of 2 atm at 250C.
Answer» Calculate the work done when $5$ moles of oxygen gas contracts isothermally from $85 L$ to $15 L$ against a constant pressure of $2 a t m$ at $25^{0} C$ .

Discussion

27.	What is meant by saying that the atomic mass of oxygen is 16
Answer» What is meant by saying that the atomic mass of oxygen is 16

Discussion

28.	No of optical isomers possible for shikmic acid
Answer» No of optical isomers possible for shikmic acid

Discussion

29.	An organic compound A (C10H20) on reductive ozonolysis gives 2-methylbutanal. Based on this information answer the compound (A) :
Answer» An organic compound A $(C_{10} H_{20})$ on reductive ozonolysis gives 2-methylbutanal. Based on this information answer the compound (A) :

Discussion

30.	Assertion:o-nitrophenol is a weaker acid than p-nitrophenol.Reason: Intramolecular hydrogen bonding makes ortho isomer weaker than para isomer.
Answer» Assertion:o-nitrophenol is a weaker acid than p-nitrophenol. Reason: Intramolecular hydrogen bonding makes ortho isomer weaker than para isomer.

Discussion

31.	Calculate the radius of the third orbit of a hydrogen atom; the radius of the first Bohr orbit of hydrogen atom is 0.53 Å.
Answer» Calculate the radius of the third orbit of a hydrogen atom; the radius of the first Bohr orbit of hydrogen atom is 0.53 Å.

Discussion

32.	Lewis concept
Answer» Lewis concept

Discussion

33.	What are the products obtained from the reaction of sodium chloride and sulphuric acid
Answer» What are the products obtained from the reaction of sodium chloride and sulphuric acid

Discussion

34.	Consider the following reaction,Let x and y be the degree of unsaturation of (R) and (P) respectively. z is the number of rearrangement step during conversion then find the value of x+y+z.
Answer» Consider the following reaction, Let $x$ and $y$ be the degree of unsaturation of (R) and (P) respectively. $z$ is the number of rearrangement step during conversion then find the value of $x + y + z$ .

Discussion

35.	5/6 lies between :a) 1 & 5/2 b)0 & 1/2c)-1 & 1/3 d)1/3 & 12/8with solution
Answer» 5/6 lies between : a) 1 & 5/2 b)0 & 1/2 c)-1 & 1/3 d)1/3 & 12/8 with solution

Discussion

36.	The unit cell with crystallographic dimensions, a≠b≠c,α=γ=90 and β≠90 is
Answer» The unit cell with crystallographic dimensions, $a \neq b \neq c, α = γ = 90 a n d β \neq 90$ is

Discussion

37.	Rate of change of weight near the earth's surface varies with height (h) as
Answer» Rate of change of weight near the earth's surface varies with height (h) as

Discussion

38.	42. Give the mechanism of production of aldehyde by etard reaction.
Answer» 42. Give the mechanism of production of aldehyde by etard reaction.

Discussion

39.	Question 8Explain powder coating and anodizing?
Answer» Question 8 Explain powder coating and anodizing?

39.

Question 8Explain powder coating and anodizing?

Answer»

Question 8

Explain powder coating and anodizing?

Discussion

40.	the energy of separation of an electron in a hydrogen like atom in excited state is 3.4eV. The de broglie wavelength(in angstrom) associated with the electron is (1)0.33 (2)6.66 (3)13.31 (4)none of the
Answer» the energy of separation of an electron in a hydrogen like atom in excited state is 3.4eV. The de broglie wavelength(in angstrom) associated with the electron is (1)0.33 (2)6.66 (3)13.31 (4)none of the

Discussion

41.	Consider the following reactions (i)H+(aq) + OH-(aq) = H2O(l),△ H =-X1kJ mol-1 (ii) H2( g) +1/202(g)= H20(l): △ H=-X2 kJ mol-1 (iii) CO2(g)+ H2(g) = CO(g) + H2O(l); △ H -X3 kJ mol-1 (iv) C2H2(g)+5/2O2(g) =2C0(g)+H20(l), △ H =+X4 kJ mol-1 Enthalpy of formation of H2O(l) is
Answer» Consider the following reactions (i)H+(aq) + OH-(aq) = H2O(l),△ H =-X1kJ mol-1 (ii) H2( g) +1/202(g)= H20(l): △ H=-X2 kJ mol-1 (iii) CO2(g)+ H2(g) = CO(g) + H2O(l); △ H -X3 kJ mol-1 (iv) C2H2(g)+5/2O2(g) =2C0(g)+H20(l), △ H =+X4 kJ mol-1 Enthalpy of formation of H2O(l) is

Discussion

42.	Which among the following has maximum number of atoms?
Answer» Which among the following has maximum number of atoms?

Discussion

43.	calculate molar conductivityof oxalic acid, given that,Na2C2O4-400 Ω -1cm2 H2SO4 700 Ω -1 cm-mol-1Na2SO4 450 Ω -1 cm 2 eq-1
Answer» calculate molar conductivityof oxalic acid, given that,Na2C2O4-400 Ω -1cm2 H2SO4 700 Ω -1 cm-mol-1Na2SO4 450 Ω -1 cm 2 eq-1

Discussion

44.	21.Combustion of a hydrocarbon gives 0.18g H2O & 0.88g CO2. Its empirical formula will be
Answer» 21.Combustion of a hydrocarbon gives 0.18g H2O & 0.88g CO2. Its empirical formula will be

Discussion

45.	In an isolated Li2+, electron jumps from n =2 to n1. What is the recoil momentumof the ion (in ko-mis(1) 5.44 \ast 10-27(2) 48.96 x 10-27(3) 16.32 x 10-27(4) 8.16 x 10-27
Answer» In an isolated Li2+, electron jumps from n =2 to n1. What is the recoil momentumof the ion (in ko-mis(1) 5.44 \ast 10-27(2) 48.96 x 10-27(3) 16.32 x 10-27(4) 8.16 x 10-27

Discussion

46.	what is the difference between rate and rate of a reaction for a chemical reaction?
Answer» what is the difference between rate and rate of a reaction for a chemical reaction?

Discussion

47.	Which of the following complex represent maximum stability ? (1) \lbrack Co(CN)6\rbrack3– (2) \lbrack Co(H2O)6\rbrack3+ (3) \lbrack Co(CN)6\rbrack4– (4) \lbrack Co(C2O4)3\rbrack3–
Answer» Which of the following complex represent maximum stability ? (1) \lbrack Co(CN)6\rbrack3– (2) \lbrack Co(H2O)6\rbrack3+ (3) \lbrack Co(CN)6\rbrack4– (4) \lbrack Co(C2O4)3\rbrack3–

Discussion

48.	The purpose of smelting an ore is
Answer» The purpose of smelting an ore is

Discussion

49.	Fundamental particle in an electromagnetic wave is
Answer» Fundamental particle in an electromagnetic wave is

Discussion

50.	In a unit cell atoms A B C and D are present at corners face centres bodycentre and edge centres respectively.if atoms touching one of the plane passing through two diagonally opposite edges are removed then formula of compound is
Answer» In a unit cell atoms A B C and D are present at corners face centres bodycentre and edge centres respectively.if atoms touching one of the plane passing through two diagonally opposite edges are removed then formula of compound is

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Which of the following explanation is best for not placing hydrogen in either the group of alkali metals or halogens

For the complex [Fe(CO)x] what is wrong:- 1. It is sigma-pi bonded organometallic compound 2. In the complex value of x=6 3. In the complex CO is Pi-acid ligand 4. It is trigonal bipyramidal shape

Write the general outer electronic configuration of s-, p-, d- and f- block elements.

What is the term which is used for the increase in the count of RBC ?

Which of the following is incorrect for carbene?

34. From word RAMLAL A.LL together but not A-A not together. B.Both LL and AA should never be together.

An oxide of nitrogen has a molecular weight of 92. Find the total no.of electrons in one gram mole of that oxide

18. Also no of oxygen atom present in 3gm of carbonate ion

Question 44.For making cake, baking powder is taken. If at home your mother uses baking soda instead of baking powder in cake. How will it affect the taste of the cake and why ? How can baking soda be converted into baking powder ? What is the role of tartaric acid added to baking soda ?

39. What is complex 1,2,3 and 4 in ETS and what do they consist of ?

26.Show that the circumfernce of the bhor orbit for the hydrogen atom is an intregral multiple of the de brogli wavelength associsted with electron revolving around the orbit.

At 17C osmotic pressure of sugar solution was 580 tirr the solution is diluted and temperature is raised to 57C osmotic pressure become 165torr the extent of dilution is

How to make the hybridization diagram (orbit mixing diagram ) of BrF5

In which of the following arrangements the given sequence is not strictly according to the property indicated against it?

what is the quantity of NaOH present in 250cc of the solution ,so that it gives a pH=1

Do Any animal fixed in one place?

Reaction of primary amines with aldehyde yields [NCERT 1984; Manipal MEE 1995]

The product of oxidation of I− with MnO−4 in alkaline medium is:

Out of , which is an example of allylic halide?

GIVE 5 FEATURES (INCLUDING ROLE) OF THE ENZYMES -1. EcoR12. Hind||3. Ligase

According to Fajan's Rule, covalent character is most favoured in ______

Calculate the work done when 5 moles of oxygen gas contracts isothermally from 85 L to 15 L against a constant pressure of 2 atm at 250C.

What is meant by saying that the atomic mass of oxygen is 16

No of optical isomers possible for shikmic acid

An organic compound A (C10H20) on reductive ozonolysis gives 2-methylbutanal. Based on this information answer the compound (A) :

Assertion:o-nitrophenol is a weaker acid than p-nitrophenol.Reason: Intramolecular hydrogen bonding makes ortho isomer weaker than para isomer.

Calculate the radius of the third orbit of a hydrogen atom; the radius of the first Bohr orbit of hydrogen atom is 0.53 Å.

Lewis concept

What are the products obtained from the reaction of sodium chloride and sulphuric acid

Consider the following reaction,Let x and y be the degree of unsaturation of (R) and (P) respectively. z is the number of rearrangement step during conversion then find the value of x+y+z.

5/6 lies between :a) 1 & 5/2 b)0 & 1/2c)-1 & 1/3 d)1/3 & 12/8with solution

The unit cell with crystallographic dimensions, a≠b≠c,α=γ=90 and β≠90 is

Rate of change of weight near the earth's surface varies with height (h) as

42. Give the mechanism of production of aldehyde by etard reaction.

Question 8Explain powder coating and anodizing?

the energy of separation of an electron in a hydrogen like atom in excited state is 3.4eV. The de broglie wavelength(in angstrom) associated with the electron is (1)0.33 (2)6.66 (3)13.31 (4)none of the

Consider the following reactions (i)H+(aq) + OH-(aq) = H2O(l),△ H =-X1kJ mol-1 (ii) H2( g) +1/202(g)= H20(l): △ H=-X2 kJ mol-1 (iii) CO2(g)+ H2(g) = CO(g) + H2O(l); △ H -X3 kJ mol-1 (iv) C2H2(g)+5/2O2(g) =2C0(g)+H20(l), △ H =+X4 kJ mol-1 Enthalpy of formation of H2O(l) is

Which among the following has maximum number of atoms?

calculate molar conductivityof oxalic acid, given that,Na2C2O4-400 Ω -1cm2 H2SO4 700 Ω -1 cm-mol-1Na2SO4 450 Ω -1 cm 2 eq-1

21.Combustion of a hydrocarbon gives 0.18g H2O & 0.88g CO2. Its empirical formula will be

In an isolated Li2+, electron jumps from n =2 to n1. What is the recoil momentumof the ion (in ko-mis(1) 5.44 \ast 10-27(2) 48.96 x 10-27(3) 16.32 x 10-27(4) 8.16 x 10-27

what is the difference between rate and rate of a reaction for a chemical reaction?

Which of the following complex represent maximum stability ? (1) \lbrack Co(CN)6\rbrack3– (2) \lbrack Co(H2O)6\rbrack3+ (3) \lbrack Co(CN)6\rbrack4– (4) \lbrack Co(C2O4)3\rbrack3–

The purpose of smelting an ore is

Fundamental particle in an electromagnetic wave is

In a unit cell atoms A B C and D are present at corners face centres bodycentre and edge centres respectively.if atoms touching one of the plane passing through two diagonally opposite edges are removed then formula of compound is