46295 + Interview Questions in Chemistry

1.	If f(x)=3-4x.find sum_(r=1)^10f(r)
Answer» If f(x)=3-4x.find sum_(r=1)^10f(r)

Discussion

2.	According to the kinetic theory of gases, in an ideal gas between two successive collisions, a gas molecule travels.....
Answer» According to the kinetic theory of gases, in an ideal gas between two successive collisions, a gas molecule travels.....

Discussion

3.	Geometry of xenon oxyfluoride (XeOF4) is
Answer» Geometry of xenon oxyfluoride (XeOF4) is

Discussion

4.	Which best describes the product of the following reaction?
Answer» Which best describes the product of the following reaction?

Discussion

5.	40.Oxidation number of Cr in (NH3)3CrO4 is ________. Fill the above blank
Answer» 40.Oxidation number of Cr in (NH3)3CrO4 is ________. Fill the above blank

Discussion

6.	Which of the following cleavage of bond can result in Homolytic Cleavage?
Answer» Which of the following cleavage of bond can result in Homolytic Cleavage?

Discussion

7.	What work did the ‘office boy’ do in the Gemini Studios? Why did he join the studio? Why was he disappointed?
Answer» What work did the ‘office boy’ do in the Gemini Studios? Why did he join the studio? Why was he disappointed?

Discussion

8.	WHAT IS DIFFERENCE BETWEEN BOND DISSOCIATION ENTHALPY AND ENTHALPY OF ATOMISATION?
Answer» WHAT IS DIFFERENCE BETWEEN BOND DISSOCIATION ENTHALPY AND ENTHALPY OF ATOMISATION?

Discussion

9.	Q) why the relative basic character ( secondary > primary > tertiary ) in amines is in contrary to the inductive effect ( tertiary > secondary >primary ) ?
Answer» Q) why the relative basic character ( secondary > primary > tertiary ) in amines is in contrary to the inductive effect ( tertiary > secondary >primary ) ?

Discussion

10.	Here is a list of metals and their potentials. Pick the ones which are stronger oxidizing agents than hydrogen electrode. You can pick more than one.
Answer» Here is a list of metals and their potentials. Pick the ones which are stronger oxidizing agents than hydrogen electrode. You can pick more than one.

Discussion

11.	To account for atomic mass of nitrogen as 14.0067, what should be the ratio of 15N and 14N atoms in natural nitrogen?(atomic mass of 14N=14.00307u and 15N=15.001u)
Answer» To account for atomic mass of nitrogen as 14.0067, what should be the ratio of 15N and 14N atoms in natural nitrogen? (atomic mass of 14N=14.00307u and 15N=15.001u)

Discussion

12.	integration of 1/(2x+3) dx with limits 1 and 0 is ?
Answer» integration of 1/(2x+3) dx with limits 1 and 0 is ?

Discussion

13.	Which is the best fluorinating agent?
Answer» Which is the best fluorinating agent?

Discussion

14.	List down any four physical properties of ionic compounds.
Answer» List down any four physical properties of ionic compounds.

Discussion

15.	17. The pH of 0.2 M monobasic acid is 3.5 then Ka is
Answer» 17. The pH of 0.2 M monobasic acid is 3.5 then Ka is

Discussion

16.	werg2H 2O= 4e+ 02+ 4H. The equivalent weight of oxygen is1) 322) 163) 84) 4
Answer» werg2H 2O= 4e+ 02+ 4H. The equivalent weight of oxygen is1) 322) 163) 84) 4

Discussion

17.	What will be IUPAC Name for,K3[Co(NO2)6]
Answer» What will be IUPAC Name for, K3[Co(NO2)6]

Discussion

18.	The correct functional group X and the reagent/reaction conditions Y in the following scheme are (IIT-JEE, 2011)
Answer» The correct functional group X and the reagent/reaction conditions Y in the following scheme are (IIT-JEE, 2011)

Discussion

19.	What is the volume of CO2 gas obtained on the complete combustion of 30 mL of propane gas?
Answer» What is the volume of $C O_{2}$ gas obtained on the complete combustion of $30 mL$ of propane gas?

Discussion

20.	An aqueous solution containing 20% by weight of liquid 'X' (mol.wt.=140 g/mol) has a vapour pressure of 160 mm Hg at 60∘C. Calculate the vapour pressure of pure liquid 'X' if the vapour pressure of water is 150 mm Hg at 60∘C (in mm Hg upto two decimal).
Answer» An aqueous solution containing 20% by weight of liquid 'X' ( $m o l . w t . = 140 g / m o l$ ) has a vapour pressure of $160 m m H g$ at $60^{\circ} C$ . Calculate the vapour pressure of pure liquid 'X' if the vapour pressure of water is $150 m m H g$ at $60^{\circ} C$ (in mm Hg upto two decimal).

Discussion

21.	Calculate the moles of Na2SO4 produced from 5 moles of NaOH 2NaOH + H2SO4 → Na2SO4 + 2H2O
Answer» Calculate the moles of Na2SO4 produced from 5 moles of NaOH 2NaOH + H2SO4 → Na2SO4 + 2H2O

Discussion

22.	Donor atom in sulphate ligand, sulphate ligand?
Answer» Donor atom in sulphate ligand, sulphate ligand?

Discussion

23.	What are valence electrons? How many valence electrons does a magnesium atom have?
Answer» What are valence electrons? How many valence electrons does a magnesium atom have?

Discussion

24.	The number of optical enantiomers of tartaric acid is:
Answer» The number of optical enantiomers of tartaric acid is:

Discussion

25.	Write the formulas forthe following coordination compounds:(i) Tetraamminediaquacobalt(III) chloride(ii) Potassiumtetracyanonickelate(II)(iii) Tris(ethane−1,2−diamine) chromium(III) chloride(iv) Amminebromidochloridonitrito-N-platinate(II)(v) Dichloridobis(ethane−1,2−diamine)platinum(IV) nitrate(vi) Iron(III)hexacyanoferrate(II)
Answer» Write the formulas for the following coordination compounds: (i) Tetraamminediaquacobalt(III) chloride (ii) Potassium tetracyanonickelate(II) (iii) Tris(ethane−1,2−diamine) chromium(III) chloride (iv) Amminebromidochloridonitrito-N-platinate(II) (v) Dichloridobis(ethane−1,2−diamine)platinum(IV) nitrate (vi) Iron(III) hexacyanoferrate(II)

25.

Write the formulas forthe following coordination compounds:(i) Tetraamminediaquacobalt(III) chloride(ii) Potassiumtetracyanonickelate(II)(iii) Tris(ethane−1,2−diamine) chromium(III) chloride(iv) Amminebromidochloridonitrito-N-platinate(II)(v) Dichloridobis(ethane−1,2−diamine)platinum(IV) nitrate(vi) Iron(III)hexacyanoferrate(II)

Answer»

Write the formulas for
the following coordination compounds:

(i)
Tetraamminediaquacobalt(III) chloride

(ii) Potassium
tetracyanonickelate(II)

(iii)
Tris(ethane−1,2−diamine) chromium(III) chloride

(iv)
Amminebromidochloridonitrito-N-platinate(II)

(v)
Dichloridobis(ethane−1,2−diamine)platinum(IV) nitrate

(vi) Iron(III)
hexacyanoferrate(II)

Discussion

26.	ntFind out the ratio of following for photonn nt(vmax)lyman: (vmax)brakettn nt1) 1:16n nt2) 16:1n nt3) 4:1n nt4) 1:4n
Answer» ntFind out the ratio of following for photonn nt(vmax)lyman: (vmax)brakettn nt1) 1:16n nt2) 16:1n nt3) 4:1n nt4) 1:4n

Discussion

27.	In Arrhenius equation for a certain reaction, the value of A (Arrhenius factor) and Ea (activation energy) are 1013 s−1 and 12.471 kJ mol−1 respectively. At what temperature, the reaction will have specific rate constant of 10−3s−1?
Answer» In Arrhenius equation for a certain reaction, the value of A (Arrhenius factor) and $E_{a}$ (activation energy) are $10^{13} s^{- 1} and 12.471 k J m o l^{- 1}$ respectively. At what temperature, the reaction will have specific rate constant of $10^{- 3} s^{- 1}$ ?

Discussion

28.	How much should the pressure be increased in order to decreased the volume of a gas by 5% at a constant temperature? 1)5% 2) 5.26% 3)10% 4)4.26% Explain briefly
Answer» How much should the pressure be increased in order to decreased the volume of a gas by 5% at a constant temperature? 1)5% 2) 5.26% 3)10% 4)4.26% Explain briefly

Discussion

29.	The oxidation potential of H electrode which is in contact with a solution having ph = 10 .
Answer» The oxidation potential of H electrode which is in contact with a solution having ph = 10 .

Discussion

30.	Asample of drinking water was found to be severely contaminated withchloroform, CHCl3,supposed to be carcinogenic in nature. The level of contamination was15 ppm (by mass).(i) Express this inpercent by mass.(ii) Determine themolality of chloroform in the water sample.
Answer» A sample of drinking water was found to be severely contaminated with chloroform, CHCl₃, supposed to be carcinogenic in nature. The level of contamination was 15 ppm (by mass). (i) Express this in percent by mass. (ii) Determine the molality of chloroform in the water sample.

30.

Asample of drinking water was found to be severely contaminated withchloroform, CHCl3,supposed to be carcinogenic in nature. The level of contamination was15 ppm (by mass).(i) Express this inpercent by mass.(ii) Determine themolality of chloroform in the water sample.

Answer»

A
sample of drinking water was found to be severely contaminated with
chloroform, CHCl₃,
supposed to be carcinogenic in nature. The level of contamination was
15 ppm (by mass).

(i) Express this in
percent by mass.

(ii) Determine the
molality of chloroform in the water sample.

Discussion

31.	What are chemical twins
Answer» What are chemical twins

Discussion

32.	What is asymptotic nature of a graph?
Answer» What is asymptotic nature of a graph?

Discussion

33.	Calculate the radii of 2nd orbit of Hydrogen atom
Answer» Calculate the radii of 2nd orbit of Hydrogen atom

Discussion

34.	The maximum number of electrons in a sub shell is given by ?
Answer» The maximum number of electrons in a sub shell is given by ?

Discussion

35.	2Fe(s) + 32 O2(g)→Fe2O3(s) (△H=−193.4kJ) ......(1)Mg(s) + 12 O2(g)→MgO(s) (△H=−140.2kJ) ......(2)What is △∆H of the reaction? 3Mg + Fe2O3→3MgO + 2Fe
Answer» $2 F e (s) + \frac{3}{2} O_{2} (g) \to F e_{2} O_{3} (s) (△ H = - 193.4 k J) . . . . . . (1)$ $M g (s) + \frac{1}{2} O_{2} (g) \to M g O (s) (△ H = - 140.2 k J) . . . . . . (2)$ What is $△$ ∆H of the reaction? $3 M g + F e_{2} O_{3} \to 3 M g O + 2 F e$

Discussion

36.	Consider the following species : NO–3,CO2–3,ClO–3,SO2–3 and BO3–3. Among the given species how many are non-planar species?
Answer» Consider the following species : $N O_{3}^{-}, C O_{3}^{2 -}, C l O_{3}^{-}, S O_{3}^{2 -}$ and $B O_{3}^{3 -}$ . Among the given species how many are non-planar species?

Discussion

37.	What is auto oxidation? Explain in detail
Answer» What is auto oxidation? Explain in detail

Discussion

38.	An aqueous solution of urea is 10% w/v The volume in which 1 mole of urea is present, will be
Answer» An aqueous solution of urea is 10% w/v The volume in which 1 mole of urea is present, will be

Discussion

39.	in clf3, if the two lone pairs are placed at the axial positions, there will be least lone pair lone pair repulsion.in a molecule, the strongest repulsions are those which exist between TWO LONE PAIRS(since lp-lp repulsion>lp-bp repulsion). therefore considering stability, the structure having the 2 LONE PAIRS placed farthest apart should be most stable.why is the structure of clf3 t shaped then.
Answer» in clf3, if the two lone pairs are placed at the axial positions, there will be least lone pair lone pair repulsion. in a molecule, the strongest repulsions are those which exist between TWO LONE PAIRS(since lp-lp repulsion>lp-bp repulsion). therefore considering stability, the structure having the 2 LONE PAIRS placed farthest apart should be most stable. why is the structure of clf3 t shaped then.

Discussion

40.	Which of the following is the correct order for the increasing atomic radius?
Answer» Which of the following is the correct order for the increasing atomic radius?

Discussion

41.	9. The number of geometric isomers that can exist for square planar [Pt(Cl)(py)(NH3) (NH2OH)]+ is (py=pyridine) a) 2 b)3 c)4 d)6
Answer» 9. The number of geometric isomers that can exist for square planar [Pt(Cl)(py)(NH3) (NH2OH)]+ is (py=pyridine) a) 2 b)3 c)4 d)6

Discussion

42.	22. Why there is opposite effect of pressure changes when del n is negative and positive according to Le chatlier principle?
Answer» 22. Why there is opposite effect of pressure changes when del n is negative and positive according to Le chatlier principle?

Discussion

43.	Which of the following is not correctly matched, with respect to structural isomerism?
Answer» Which of the following is not correctly matched, with respect to structural isomerism?

Discussion

44.	A sample of hard water from some source was found to release carbon dioxide gas when boiled. It is possible to titrate the sample of water from the same source with ?
Answer» A sample of hard water from some source was found to release carbon dioxide gas when boiled. It is possible to titrate the sample of water from the same source with ?

Discussion

45.	Is anti-markovnikev rule applicable for HBr and if so why ?
Answer» Is anti-markovnikev rule applicable for HBr and if so why ?

Discussion

46.	Write IUPAC names of the products obtained by the ozonolysis of the following compounds: (i) Pent-2-ene (ii) 3,4-Dimethyl-hept-3-ene (iii) 2-Ethylbut-1-ene (iv) 1-Phenylbut-1-ene
Answer» Write IUPAC names of the products obtained by the ozonolysis of the following compounds: (i) Pent-2-ene (ii) 3,4-Dimethyl-hept-3-ene (iii) 2-Ethylbut-1-ene (iv) 1-Phenylbut-1-ene

46.

Write IUPAC names of the products obtained by the ozonolysis of the following compounds: (i) Pent-2-ene (ii) 3,4-Dimethyl-hept-3-ene (iii) 2-Ethylbut-1-ene (iv) 1-Phenylbut-1-ene

Answer»

Write IUPAC names of the products obtained by the ozonolysis of the following compounds:
(i) Pent-2-ene

(ii) 3,4-Dimethyl-hept-3-ene

(iii) 2-Ethylbut-1-ene

(iv) 1-Phenylbut-1-ene

Discussion

47.	Adsorbate is represented by which spheres in the following diagram.
Answer» Adsorbate is represented by which spheres in the following diagram.

Discussion

48.	Weight of NaOH required to react completely with 0.1 equivalent of H2SO4 is?
Answer» Weight of NaOH required to react completely with 0.1 equivalent of H2SO4 is?

Discussion

49.	The reagent used in the conversion of C2H5NH2 to C2H5Cl would be- (1) Sulphuryl chloride (2) Thionyl chloride (3) Nitrosyl chloride (4) All
Answer» The reagent used in the conversion of C2H5NH2 to C2H5Cl would be- (1) Sulphuryl chloride (2) Thionyl chloride (3) Nitrosyl chloride (4) All

Discussion

50.	why is anisole undergoing F and C reaction despite having a EWG.
Answer» why is anisole undergoing F and C reaction despite having a EWG.

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

If f(x)=3-4x.find sum_(r=1)^10f(r)

According to the kinetic theory of gases, in an ideal gas between two successive collisions, a gas molecule travels.....

Geometry of xenon oxyfluoride (XeOF4) is

Which best describes the product of the following reaction?

40.Oxidation number of Cr in (NH3)3CrO4 is ________. Fill the above blank

Which of the following cleavage of bond can result in Homolytic Cleavage?

What work did the ‘office boy’ do in the Gemini Studios? Why did he join the studio? Why was he disappointed?

WHAT IS DIFFERENCE BETWEEN BOND DISSOCIATION ENTHALPY AND ENTHALPY OF ATOMISATION?

Q) why the relative basic character ( secondary > primary > tertiary ) in amines is in contrary to the inductive effect ( tertiary > secondary >primary ) ?

Here is a list of metals and their potentials. Pick the ones which are stronger oxidizing agents than hydrogen electrode. You can pick more than one.

To account for atomic mass of nitrogen as 14.0067, what should be the ratio of 15N and 14N atoms in natural nitrogen?(atomic mass of 14N=14.00307u and 15N=15.001u)

integration of 1/(2x+3) dx with limits 1 and 0 is ?

Which is the best fluorinating agent?

List down any four physical properties of ionic compounds.

17. The pH of 0.2 M monobasic acid is 3.5 then Ka is

werg2H 2O= 4e+ 02+ 4H. The equivalent weight of oxygen is1) 322) 163) 84) 4

What will be IUPAC Name for,K3[Co(NO2)6]

The correct functional group X and the reagent/reaction conditions Y in the following scheme are (IIT-JEE, 2011)

What is the volume of CO2 gas obtained on the complete combustion of 30 mL of propane gas?

An aqueous solution containing 20% by weight of liquid 'X' (mol.wt.=140 g/mol) has a vapour pressure of 160 mm Hg at 60∘C. Calculate the vapour pressure of pure liquid 'X' if the vapour pressure of water is 150 mm Hg at 60∘C (in mm Hg upto two decimal).

Calculate the moles of Na2SO4 produced from 5 moles of NaOH 2NaOH + H2SO4 → Na2SO4 + 2H2O

Donor atom in sulphate ligand, sulphate ligand?

What are valence electrons? How many valence electrons does a magnesium atom have?

The number of optical enantiomers of tartaric acid is:

ntFind out the ratio of following for photonn nt(vmax)lyman: (vmax)brakettn nt1) 1:16n nt2) 16:1n nt3) 4:1n nt4) 1:4n

In Arrhenius equation for a certain reaction, the value of A (Arrhenius factor) and Ea (activation energy) are 1013 s−1 and 12.471 kJ mol−1 respectively. At what temperature, the reaction will have specific rate constant of 10−3s−1?

How much should the pressure be increased in order to decreased the volume of a gas by 5% at a constant temperature? 1)5% 2) 5.26% 3)10% 4)4.26% Explain briefly

The oxidation potential of H electrode which is in contact with a solution having ph = 10 .

Asample of drinking water was found to be severely contaminated withchloroform, CHCl3,supposed to be carcinogenic in nature. The level of contamination was15 ppm (by mass).(i) Express this inpercent by mass.(ii) Determine themolality of chloroform in the water sample.

What are chemical twins

What is asymptotic nature of a graph?

Calculate the radii of 2nd orbit of Hydrogen atom

The maximum number of electrons in a sub shell is given by ?

2Fe(s) + 32 O2(g)→Fe2O3(s) (△H=−193.4kJ) ......(1)Mg(s) + 12 O2(g)→MgO(s) (△H=−140.2kJ) ......(2)What is △∆H of the reaction? 3Mg + Fe2O3→3MgO + 2Fe

Consider the following species : NO–3,CO2–3,ClO–3,SO2–3 and BO3–3. Among the given species how many are non-planar species?

What is auto oxidation? Explain in detail

An aqueous solution of urea is 10% w/v The volume in which 1 mole of urea is present, will be

Which of the following is the correct order for the increasing atomic radius?

9. The number of geometric isomers that can exist for square planar [Pt(Cl)(py)(NH3) (NH2OH)]+ is (py=pyridine) a) 2 b)3 c)4 d)6

22. Why there is opposite effect of pressure changes when del n is negative and positive according to Le chatlier principle?

Which of the following is not correctly matched, with respect to structural isomerism?

A sample of hard water from some source was found to release carbon dioxide gas when boiled. It is possible to titrate the sample of water from the same source with ?

Is anti-markovnikev rule applicable for HBr and if so why ?

Write IUPAC names of the products obtained by the ozonolysis of the following compounds: (i) Pent-2-ene (ii) 3,4-Dimethyl-hept-3-ene (iii) 2-Ethylbut-1-ene (iv) 1-Phenylbut-1-ene

Adsorbate is represented by which spheres in the following diagram.

Weight of NaOH required to react completely with 0.1 equivalent of H2SO4 is?

The reagent used in the conversion of C2H5NH2 to C2H5Cl would be- (1) Sulphuryl chloride (2) Thionyl chloride (3) Nitrosyl chloride (4) All

why is anisole undergoing F and C reaction despite having a EWG.