46295 + Interview Questions in Chemistry

1.	Which of the following metals cannot liberate hydrogen from dilute hydrochloric acid?
Answer» Which of the following metals cannot liberate hydrogen from dilute hydrochloric acid?

Discussion

2.	34.what happen when salicylic acid react with acetic anhydride
Answer» 34.what happen when salicylic acid react with acetic anhydride

Discussion

3.	What are different distinguish test in organic chemistry in 12
Answer» What are different distinguish test in organic chemistry in 12

Discussion

4.	what is Biopolymers ?
Answer» what is Biopolymers ?

Discussion

5.	Calculate the (V/V)% of a solution of 15 mL of alcohol in 60 mL of water.
Answer» Calculate the $(V / V) %$ of a solution of 15 mL of alcohol in 60 mL of water.

Discussion

6.	If x, y and z are the isomers of B3N3H5X,B3N3H4X2 and B3N3H3X3 respectively, then x+y+z=
Answer» If $x, y$ and $z$ are the isomers of $B_{3} N_{3} H_{5} X, B_{3} N_{3} H_{4} X_{2}$ and $B_{3} N_{3} H_{3} X_{3}$ respectively, then $x + y + z =$

Discussion

7.	Formula of oleic acid
Answer» Formula of oleic acid

Discussion

8.	What is seeding?
Answer» What is seeding?

Discussion

9.	The non-stoichiometric compound Fe0.94O is formed when x% of Fe2+ ions are replaced by as many 23Fe3+ ions, x is ?
Answer» The non-stoichiometric compound $F e_{0.94} O$ is formed when x% of $F e^{2 +}$ ions are replaced by as many $\frac{2}{3} F e^{3 +}$ ions, x is ?

Discussion

10.	0.078g of hydrocarbon occupy 22.4L of volume at 1atm and 0degrees Calcutta calcious Long press to edit & lockthe empirical formula of hydrocarbonis CH. What will be the molecular formula
Answer» 0.078g of hydrocarbon occupy 22.4L of volume at 1atm and 0degrees Calcutta calcious Long press to edit & lockthe empirical formula of hydrocarbonis CH. What will be the molecular formula

Discussion

11.	Hydroboration of isobutylene followed by oxidative alkaline hydrolysis gives 1. 1 butanol2. 2 butanol3. Isobutyl alcohol4(.CH3)C-OH
Answer» Hydroboration of isobutylene followed by oxidative alkaline hydrolysis gives 1. 1 butanol 2. 2 butanol 3. Isobutyl alcohol 4(.CH3)C-OH

Discussion

12.	The oxide containing chlorine in the highest oxidation state is
Answer» The oxide containing chlorine in the highest oxidation state is

Discussion

13.	Molecule which contains only bonded pairs of electrons on the central atom is
Answer» Molecule which contains only bonded pairs of electrons on the central atom is

Discussion

14.	What is the difference between antacid and cimetidine?
Answer» What is the difference between antacid and cimetidine?

Discussion

15.	Which of the following metals does not exhibit variable oxidation state?
Answer» Which of the following metals does not exhibit variable oxidation state?

Discussion

16.	the concentration of a reaction decreases from 0.2M to 0.1M in 10 minutes . the rate of reaction is?
Answer» the concentration of a reaction decreases from 0.2M to 0.1M in 10 minutes . the rate of reaction is?

Discussion

17.	How can you convert an unsaturated hydrocarbon to a saturated hydrocarbon?
Answer» How can you convert an unsaturated hydrocarbon to a saturated hydrocarbon?

Discussion

18.	Assertion (A): - NO2 group is benzene ring deactivating and m - directing groupReason (R): - NO2 group with draws electron density from benzene ring and makes ortho and para positions more electron deficient than meta position
Answer» Assertion (A): - $N O_{2}$ group is benzene ring deactivating and m - directing group Reason (R): - $N O_{2}$ group with draws electron density from benzene ring and makes ortho and para positions more electron deficient than meta position

18.

Assertion (A): - NO2 group is benzene ring deactivating and m - directing groupReason (R): - NO2 group with draws electron density from benzene ring and makes ortho and para positions more electron deficient than meta position

Answer»

Assertion (A): - $N O_{2}$ group is benzene ring deactivating and m - directing group

Reason (R): - $N O_{2}$ group with draws electron density from benzene ring and makes ortho and para positions more electron deficient than meta position

Discussion

19.	A:polymerisation tendency order is SiO_{4_{}}^{4-}
Answer» A:polymerisation tendency order is SiO_{4_{}}^{4-}

Discussion

20.	A compound which contains one atom of X and two atoms of Y for each three atoms of Z is made by mixing 5.0 g of X, 1.15×1023 atoms of Y and 0.03 g−atoms of Z. If only 4.40 g of the compound results, then the value of atomic mass of Y is (The atomic masses of Xand Z are 60 and 80, respectively and take avogadro number as 6×1023.)70
Answer» A compound which contains one atom of $X$ and two atoms of $Y$ for each three atoms of $Z$ is made by mixing $5.0 g$ of $X$ , $1.15 \times 10^{23}$ atoms of $Y$ and $0.03 g - a t o m s$ of $Z$ . If only $4.40 g$ of the compound results, then the value of atomic mass of $Y$ is (The atomic masses of $X$ and $Z$ are $60$ and $80$ , respectively and take avogadro number as $6 \times 10^{23}$ .) 70

Discussion

21.	The product of acid catalysed hydration of 2-phenyl properties is:
Answer» The product of acid catalysed hydration of 2-phenyl properties is:

Discussion

22.	Q8. Consider the following statements about Magnesium diboride: 1. Graphene – a single layer of carbon arranged in a honeycomb – isolated from pencil graphite. 2. The graphene discovery had won the Nobel physics prize in 2010. Which of the above statements are correct?
Answer» Q8. Consider the following statements about Magnesium diboride: 1. Graphene – a single layer of carbon arranged in a honeycomb – isolated from pencil graphite. 2. The graphene discovery had won the Nobel physics prize in 2010. Which of the above statements are correct?

22.

Q8. Consider the following statements about Magnesium diboride: 1. Graphene – a single layer of carbon arranged in a honeycomb – isolated from pencil graphite. 2. The graphene discovery had won the Nobel physics prize in 2010. Which of the above statements are correct?

Answer»

Q8. Consider the following statements about Magnesium diboride:

1. Graphene – a single layer of carbon arranged in a honeycomb – isolated from pencil graphite.

2. The graphene discovery had won the Nobel physics prize in 2010.

Which of the above statements are correct?

Discussion

23.	A definite amount of a gaseous hydrocarbon having less than 5 carbon atoms was burned with sufficient amount of O2 at a very high temperature. The volume of all reactants was 600 ml, after the explosion the volume of the products was found to be 700 ml under the similar conditions. What is the molecular formula of compound?
Answer» A definite amount of a gaseous hydrocarbon having less than 5 carbon atoms was burned with sufficient amount of $O_{2}$ at a very high temperature. The volume of all reactants was 600 ml, after the explosion the volume of the products was found to be 700 ml under the similar conditions. What is the molecular formula of compound?

Discussion

24.	Calculate the pH of a solution prepared by mixing 2.0 ml of a strong acid (HCl) solution of pH 3.0 and 2.0 ml of a strong base (NaOH) of pH 11.0
Answer» Calculate the pH of a solution prepared by mixing 2.0 ml of a strong acid $(H C l)$ solution of pH 3.0 and 2.0 ml of a strong base $(N a O H)$ of pH 11.0

Discussion

25.	identify the product possible for the reaction C6H6 ---->in presence of HNO3/H2SO4 (reflux)intermediate compound--->in presence of Sn/HCl product
Answer» identify the product possible for the reaction C6H6 ---->in presence of HNO3/H2SO4 (reflux)intermediate compound--->in presence of Sn/HCl product

Discussion

26.	An electrochemical cell consists of two half-cell reactions: AgCl(s)+e−→Ag(s)+Cl−(aq) Cu(s)→Cu2+(aq)+2e− The mass of copper (in grams) dissolved on passing 0.5 A current for 1 h is: (Given: atomic mass of Cu is 63.6, F=96500 C mol−1)
Answer» An electrochemical cell consists of two half-cell reactions: $A g C l (s) + e^{-} \to A g (s) + C l^{-} (a q)$ $C u (s) \to C u^{2 +} (a q) + 2 e^{-}$ The mass of copper (in grams) dissolved on passing $0.5 A$ current for $1 h$ is: (Given: atomic mass of $C u$ is $63.6$ , $F = 96500 C m o l^{- 1}$ )

Discussion

27.	The internal energy (U) of an ideal gas is plotted against volume for a cyclic process ABCDA, as shown in the figure. The temperature of the gas at B and C are 500 K and 300 K, respectively. The heat absorbed by the gas (in cal/mol) in this cyclic process, is :
Answer» The internal energy (U) of an ideal gas is plotted against volume for a cyclic process ABCDA, as shown in the figure. The temperature of the gas at B and C are $500 K$ and $300 K$ , respectively. The heat absorbed by the gas (in cal/mol) in this cyclic process, is :

Discussion

28.	Total number of geometrical isomers for the complex [RhCl(CO)(PPh3)(NH3)] is
Answer» Total number of geometrical isomers for the complex $[R h C l (C O) (P P h_{3}) (N H_{3})]$ is

Discussion

29.	For a solution, the particle size is less than x–– nanometer. For a colloid, the particle size is more than y– nanometer and less than z– nanometer (s). For a suspension, the particles size is more than w–– nanometer(s). Choose x, y, z and w from the following: 1. One 2. Ten 3. Two 4. Hundred 5. Thousand 6. Fifty x + y + z + w is ___.
Answer» For a solution, the particle size is less than $x - -$ nanometer. For a colloid, the particle size is more than $y -$ nanometer and less than $z -$ nanometer (s). For a suspension, the particles size is more than $w - -$ nanometer(s). Choose x, y, z and w from the following: 1. One 2. Ten 3. Two 4. Hundred 5. Thousand 6. Fifty x + y + z + w is ___.

Discussion

30.	Which of the following compounds is metallic and ferromagnetic?
Answer» Which of the following compounds is metallic and ferromagnetic?

Discussion

31.	What is valency?
Answer» What is valency?

Discussion

32.	8.CaCO3(s)=CaO(s) +CO2(g).If Kp for the above reaction at 1200K is 1.5 atm.Some CaCO3 is taken in a 10 litre closed vessel,then the number of moles of CaO at equilibrium is (Take R=1/12 litreatmk-1mol-1) options :1)1.5 ,2)3.5, 3)0.015, 4)0.15
Answer» 8.CaCO3(s)=CaO(s) +CO2(g).If Kp for the above reaction at 1200K is 1.5 atm.Some CaCO3 is taken in a 10 litre closed vessel,then the number of moles of CaO at equilibrium is (Take R=1/12 litreatmk-1mol-1) options :1)1.5 ,2)3.5, 3)0.015, 4)0.15

Discussion

33.	30. The ratio of pH of 0.1 M H2SO4 and that of 0.1 N H2SO4 is A. 1:1 B. 2 :1 C. 1:7 D. 7:10
Answer» 30. The ratio of pH of 0.1 M H2SO4 and that of 0.1 N H2SO4 is A. 1:1 B. 2 :1 C. 1:7 D. 7:10

Discussion

34.	what is the structure of al2cl6?how many 3c-4e bonds does it have?
Answer» what is the structure of al2cl6? how many 3c-4e bonds does it have?

Discussion

35.	22. 1 g sample of chalk is completely neutralised by100 ml 0.04N HCl solution. %(w/w) CaCO3 in thesample is(1) 20 (2) 40(3) 60 (4) 80
Answer» 22. 1 g sample of chalk is completely neutralised by 100 ml 0.04N HCl solution. %(w/w) CaCO3 in the sample is (1) 20 (2) 40 (3) 60 (4) 80

Discussion

36.	Question 19 Which of the following sets of quantum numbers are correct ? (a) n l m 1 1 +2 (b) n l m 1 1 +1 (c) n l m 3 2 -2 (d) n l m 3 4 -2
Answer» Question 19 Which of the following sets of quantum numbers are correct ? (a) n l m 1 1 +2 (b) n l m 1 1 +1 (c) n l m 3 2 -2 (d) n l m 3 4 -2

36.

Question 19 Which of the following sets of quantum numbers are correct ? (a) n l m 1 1 +2 (b) n l m 1 1 +1 (c) n l m 3 2 -2 (d) n l m 3 4 -2

Answer»

Question 19

Which of the following sets of quantum numbers are correct ?

(a) n l m

1 1 +2

(b) n l m

1 1 +1

(c) n l m

3 2 -2

(d) n l m

3 4 -2

Discussion

37.	Which of the following represents the structure of cellulose?
Answer» Which of the following represents the structure of cellulose?

Discussion

38.	Which one of the following can be classified as a Bronsted base
Answer» Which one of the following can be classified as a Bronsted base

38.

Which one of the following can be classified as a Bronsted base

Answer»

Which one of the following can be classified as a Bronsted base

Discussion

39.	Identify 'R' in the reaction
Answer» Identify 'R' in the reaction

Discussion

40.	Which of the following halides easily undergoes hydrolysis?
Answer» Which of the following halides easily undergoes hydrolysis?

Discussion

41.	A solution NaOH contain .04 gm of NaOH per litre.Its pH is
Answer» A solution NaOH contain .04 gm of NaOH per litre.Its pH is

Discussion

42.	Carbonyl compounds can generally be converted to hydrocarbons by :
Answer» Carbonyl compounds can generally be converted to hydrocarbons by :

Discussion

43.	In an experiment 0.04F was passed through 400ml of 1M NaCl solution . What would be PH of the solution after electrolysis A_8. B_10. C_13. D_6
Answer» In an experiment 0.04F was passed through 400ml of 1M NaCl solution . What would be PH of the solution after electrolysis A_8. B_10. C_13. D_6

43.

In an experiment 0.04F was passed through 400ml of 1M NaCl solution . What would be PH of the solution after electrolysis A_8. B_10. C_13. D_6

Answer»

In an experiment 0.04F was passed through 400ml of 1M NaCl solution . What would be PH of the solution after electrolysis

A_8. B_10. C_13. D_6

Discussion

44.	Pimonomic density of sodiumchloride crystal 2. 165 x 103kg m3 while its X-ray density 2178x103 is 3. Sodium chloridecrystal is the dominant place ofunauthorized site.
Answer» Pimonomic density of sodiumchloride crystal 2. 165 x 103kg m3 while its X-ray density 2178x103 is 3. Sodium chloridecrystal is the dominant place ofunauthorized site.

Discussion

45.	in comparison to ethyl chloride it is difficult to carry out nucleophilic substitution on vinyl chlorid
Answer» in comparison to ethyl chloride it is difficult to carry out nucleophilic substitution on vinyl chlorid

Discussion

46.	Suppose you have taken a dilute solution of oleic acid in such a way that its concentration becomes 0.01 cm3 of oleic acid per cm3 of the solution. Then you make a thin film of this solution (monomolecular thickness) of area 4 cm2 by considering 100 spherical drops of radius(340π)13×10−3 cm. Then the thickness of oleic acid layer will be x×10−14 m where x is
Answer» Suppose you have taken a dilute solution of oleic acid in such a way that its concentration becomes $0.01 {cm}^{3}$ of oleic acid per ${cm}^{3}$ of the solution. Then you make a thin film of this solution (monomolecular thickness) of area $4 {cm}^{2}$ by considering $100$ spherical drops of radius ${(\frac{3}{40 π})}^{\frac{1}{3}} \times 10^{- 3} cm$ . Then the thickness of oleic acid layer will be $x \times 10^{- 14} m$ where $x$ is

Discussion

47.	The iron product of water pKw is 14. If a rain water sample has a pH of 5.6, the concentration of OH− in the sample (in 10−9 mol/litre, round off to one decimal place), is____3.981
Answer» The iron product of water $p K_{w}$ is 14. If a rain water sample has a pH of 5.6, the concentration of $O H^{-}$ in the sample (in $10^{- 9}$ mol/litre, round off to one decimal place), is____ 3.981

Discussion

48.	What is the mass of precipitate formed when 50 mL of 17% (w/V) solution of AgNO3 is mixed with 50 mL of 5.85% (w/V) NaCl solution?(Ag=108, N=14, O=16, Na=23, Cl=35.5)
Answer» What is the mass of precipitate formed when $50 mL$ of $17 % (w / V)$ solution of $A g N O_{3}$ is mixed with $50 mL$ of $5.85 % (w / V)$ $N a C l$ solution? $(A g = 108, N = 14, O = 16, N a = 23, C l = 35.5)$

Discussion

49.	The sodium salt of a certain weak monobasic organic acid is hydrolysed to an extent of 3% in its 0.1 M solution at 25∘ C. Given that the ionic product of water is 10−14 at this temperature, what is the dissociation constant of the acid ?
Answer» The sodium salt of a certain weak monobasic organic acid is hydrolysed to an extent of $3 %$ in its $0.1 M$ solution at $25^{\circ} C$ . Given that the ionic product of water is $10^{- 14}$ at this temperature, what is the dissociation constant of the acid ?

Discussion

50.	Benzaldehyde reacts with aniline to give
Answer» Benzaldehyde reacts with aniline to give

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Which of the following metals cannot liberate hydrogen from dilute hydrochloric acid?

34.what happen when salicylic acid react with acetic anhydride

What are different distinguish test in organic chemistry in 12

what is Biopolymers ?

Calculate the (V/V)% of a solution of 15 mL of alcohol in 60 mL of water.​

If x, y and z are the isomers of B3N3H5X,B3N3H4X2 and B3N3H3X3 respectively, then x+y+z=

Formula of oleic acid

What is seeding?

The non-stoichiometric compound Fe0.94O is formed when x% of Fe2+ ions are replaced by as many 23Fe3+ ions, x is ?

0.078g of hydrocarbon occupy 22.4L of volume at 1atm and 0degrees Calcutta calcious Long press to edit & lockthe empirical formula of hydrocarbonis CH. What will be the molecular formula

Hydroboration of isobutylene followed by oxidative alkaline hydrolysis gives 1. 1 butanol2. 2 butanol3. Isobutyl alcohol4(.CH3)C-OH

The oxide containing chlorine in the highest oxidation state is

Molecule which contains only bonded pairs of electrons on the central atom is

What is the difference between antacid and cimetidine?

Which of the following metals does not exhibit variable oxidation state?

the concentration of a reaction decreases from 0.2M to 0.1M in 10 minutes . the rate of reaction is?

How can you convert an unsaturated hydrocarbon to a saturated hydrocarbon?

Assertion (A): - NO2 group is benzene ring deactivating and m - directing groupReason (R): - NO2 group with draws electron density from benzene ring and makes ortho and para positions more electron deficient than meta position

A:polymerisation tendency order is SiO_{4_{}}^{4-}

The product of acid catalysed hydration of 2-phenyl properties is:

Q8. Consider the following statements about Magnesium diboride: 1. Graphene – a single layer of carbon arranged in a honeycomb – isolated from pencil graphite. 2. The graphene discovery had won the Nobel physics prize in 2010. Which of the above statements are correct?

Calculate the pH of a solution prepared by mixing 2.0 ml of a strong acid (HCl) solution of pH 3.0 and 2.0 ml of a strong base (NaOH) of pH 11.0

identify the product possible for the reaction C6H6 ---->in presence of HNO3/H2SO4 (reflux)intermediate compound--->in presence of Sn/HCl product

An electrochemical cell consists of two half-cell reactions: AgCl(s)+e−→Ag(s)+Cl−(aq) Cu(s)→Cu2+(aq)+2e− The mass of copper (in grams) dissolved on passing 0.5 A current for 1 h is: (Given: atomic mass of Cu is 63.6, F=96500 C mol−1)

The internal energy (U) of an ideal gas is plotted against volume for a cyclic process ABCDA, as shown in the figure. The temperature of the gas at B and C are 500 K and 300 K, respectively. The heat absorbed by the gas (in cal/mol) in this cyclic process, is :

Total number of geometrical isomers for the complex [RhCl(CO)(PPh3)(NH3)] is

Which of the following compounds is metallic and ferromagnetic?

What is valency?

8.CaCO3(s)=CaO(s) +CO2(g).If Kp for the above reaction at 1200K is 1.5 atm.Some CaCO3 is taken in a 10 litre closed vessel,then the number of moles of CaO at equilibrium is (Take R=1/12 litreatmk-1mol-1) options :1)1.5 ,2)3.5, 3)0.015, 4)0.15

30. The ratio of pH of 0.1 M H2SO4 and that of 0.1 N H2SO4 is A. 1:1 B. 2 :1 C. 1:7 D. 7:10

what is the structure of al2cl6?how many 3c-4e bonds does it have?

22. 1 g sample of chalk is completely neutralised by100 ml 0.04N HCl solution. %(w/w) CaCO3 in thesample is(1) 20 (2) 40(3) 60 (4) 80

Question 19 Which of the following sets of quantum numbers are correct ? (a) n l m 1 1 +2 (b) n l m 1 1 +1 (c) n l m 3 2 -2 (d) n l m 3 4 -2

Which of the following represents the structure of cellulose?

Which one of the following can be classified as a Bronsted base

Identify 'R' in the reaction

Which of the following halides easily undergoes hydrolysis?

A solution NaOH contain .04 gm of NaOH per litre.Its pH is

Carbonyl compounds can generally be converted to hydrocarbons by :

In an experiment 0.04F was passed through 400ml of 1M NaCl solution . What would be PH of the solution after electrolysis A_8. B_10. C_13. D_6

Pimonomic density of sodiumchloride crystal 2. 165 x 103kg m3 while its X-ray density 2178x103 is 3. Sodium chloridecrystal is the dominant place ofunauthorized site.

in comparison to ethyl chloride it is difficult to carry out nucleophilic substitution on vinyl chlorid

The iron product of water pKw is 14. If a rain water sample has a pH of 5.6, the concentration of OH− in the sample (in 10−9 mol/litre, round off to one decimal place), is____3.981

What is the mass of precipitate formed when 50 mL of 17% (w/V) solution of AgNO3 is mixed with 50 mL of 5.85% (w/V) NaCl solution?(Ag=108, N=14, O=16, Na=23, Cl=35.5)

The sodium salt of a certain weak monobasic organic acid is hydrolysed to an extent of 3% in its 0.1 M solution at 25∘ C. Given that the ionic product of water is 10−14 at this temperature, what is the dissociation constant of the acid ?

Benzaldehyde reacts with aniline to give

Calculate the (V/V)% of a solution of 15 mL of alcohol in 60 mL of water.