46295 + Interview Questions in Chemistry

1.	Which of the following compounds will exhibit geometrical isomerism?
Answer» Which of the following compounds will exhibit geometrical isomerism?

Discussion

2.	In a double stranded DNA molecule, the percentage of cytosine is 18. What would be the percentage of adenine?
Answer» In a double stranded DNA molecule, the percentage of cytosine is 18. What would be the percentage of adenine?

Discussion

3.	The correct order of the metallic character is:
Answer» The correct order of the metallic character is:

Discussion

4.	What is the major product 'P' of the given reaction?
Answer» What is the major product 'P' of the given reaction?

Discussion

5.	1) Are fluorine oxides more stable than iodine oxides? 2) what is the middle row anomaly for bromine oxides? Why can't it form multiple bonds with oxygen like cl?
Answer» 1) Are fluorine oxides more stable than iodine oxides? 2) what is the middle row anomaly for bromine oxides? Why can't it form multiple bonds with oxygen like cl?

Discussion

6.	Explain why inspite of nearly the same electronegativity, nitrogen forms hydrogen bonding while chlorine does not?
Answer» Explain why inspite of nearly the same electronegativity, nitrogen forms hydrogen bonding while chlorine does not?

Discussion

7.	When to write silver an when to write argentate in a coordinate compound which contains the silver metal.?
Answer» When to write silver an when to write argentate in a coordinate compound which contains the silver metal.?

Discussion

8.	Round off 4.05?
Answer» Round off 4.05?

Discussion

9.	[Pl(NH3)6]Cl4 complex gives
Answer» $[P l (N H_{3})_{6}] C l_{4}$ complex gives

Discussion

10.	In a deep sea expedition at depth of about 350 ft, a driver is subject to a pressure of approximately 10 atm. A gas cylinder carried by him contains 51.2 g of O2 and 326.4 g of He and has a volume of 10 L. What is the total pressure in the cylinder at 20 ∘C temperature?
Answer» In a deep sea expedition at depth of about $350 ft,$ a driver is subject to a pressure of approximately $10 atm .$ A gas cylinder carried by him contains $51.2 g$ of $O_{2}$ and $326.4 g$ of $He$ and has a volume of $10 L .$ What is the total pressure in the cylinder at $20^{\circ} C$ temperature?

Discussion

11.	48.How many unit cell are present in a cube shaped ideal crystal of NaCl of mass 1.00 g (1)5.14×10²¹ (2)1.28×10²¹ (3)1.71×10²¹ (4)2.57×10²¹
Answer» 48.How many unit cell are present in a cube shaped ideal crystal of NaCl of mass 1.00 g (1)5.14×10²¹ (2)1.28×10²¹ (3)1.71×10²¹ (4)2.57×10²¹

Discussion

12.	If Z is a compressibility factor, Van der Waals equation at low pressure can be written as
Answer» If Z is a compressibility factor, Van der Waals equation at low pressure can be written as

Discussion

13.	Diff between colloids and crystalloids
Answer» Diff between colloids and crystalloids

Discussion

14.	Question 212 mL each of concentrated HCl,HNO3 and a mixture of concentrated HCl and concentrated HNO3 in the ratio of 3 : 1 were taken in test tubes labelled as A, B and C. A small piece of metal was put in each test tube. No change occurred in test tubes A and B but the metal got dissolved in test tube C respectively. The metal could be(a) Al(b) Au(c) Cu(d) Pt
Answer» Question 21 2 mL each of concentrated $HCl, {HNO}_{3}$ and a mixture of concentrated $HCl$ and concentrated ${HNO}_{3}$ in the ratio of 3 : 1 were taken in test tubes labelled as A, B and C. A small piece of metal was put in each test tube. No change occurred in test tubes A and B but the metal got dissolved in test tube C respectively. The metal could be (a) $Al$ (b) $Au$ (c) $Cu$ (d) $Pt$

Discussion

15.	which of the following has highest boiling point? A.1 mole of glucose B.1 mole of kcl A.1 mole of glucose, B.1 mole of kcl,c.1 mole Al(NO3)3 ,D.1 mole of na2so4
Answer» which of the following has highest boiling point? A.1 mole of glucose B.1 mole of kcl A.1 mole of glucose, B.1 mole of kcl,c.1 mole Al(NO3)3 ,D.1 mole of na2so4

Discussion

16.	49. 1 chloro 3 ido propane on reaction with KCN(1 mole each) in acetone gives
Answer» 49. 1 chloro 3 ido propane on reaction with KCN(1 mole each) in acetone gives

Discussion

17.	ntif 8 g mol of pcl5 heated in a closed vessel of 10 l capacity and 25 % of its dissociated into PCl3 and Cl2 at the equilibrium then value of kp will be equal to.n
Answer» ntif 8 g mol of pcl5 heated in a closed vessel of 10 l capacity and 25 % of its dissociated into PCl3 and Cl2 at the equilibrium then value of kp will be equal to.n

Discussion

18.	Reaction of secondary and tertiary amines with nitrous acid
Answer» Reaction of secondary and tertiary amines with nitrous acid

Discussion

19.	Calculatethe ‘spin only’ magnetic moment of M2+(aq)ion (Z =27).
Answer» Calculate the ‘spin only’ magnetic moment of M²⁺₍_aq₎ ion (Z = 27).

Discussion

20.	What happens when 3-phenylprop-2-enal reacts with LiAlH4 ?
Answer» What happens when 3-phenylprop-2-enal reacts with LiAlH4 ?

Discussion

21.	an element density 6.8g cm^{-3} occurs in bcc structure with cell edge 290 pm.Calculate the no. of atoms present in 200gm of elementv
Answer» an element density 6.8g cm^{-3} occurs in bcc structure with cell edge 290 pm.Calculate the no. of atoms present in 200gm of elementv

Discussion

22.	The oxidation number of sulphur in sulphuric acid is
Answer» The oxidation number of sulphur in sulphuric acid is

Discussion

23.	10.How many d orbitals ar einvolved in the formation of XeO3F2
Answer» 10.How many d orbitals ar einvolved in the formation of XeO3F2

Discussion

24.	41.A hydrogen electrode placed in buffer solution of CH3COONA and CH3COONA in the molar ratio c1:c2 and c2:c1 has oxidation potential E1 and E2 volts respectively at 298K(pH2=1atm).The Pka value of acetic acid will given by
Answer» 41.A hydrogen electrode placed in buffer solution of CH3COONA and CH3COONA in the molar ratio c1:c2 and c2:c1 has oxidation potential E1 and E2 volts respectively at 298K(pH2=1atm).The Pka value of acetic acid will given by

Discussion

25.	The image of z1= -15-16i with respect to \|z-1-i\|=4 is
Answer» The image of z1= -15-16i with respect to \|z-1-i\|=4 is

Discussion

26.	List all the elements in chemistry.
Answer» List all the elements in chemistry.

Discussion

27.	The number of compound(s) given below which contain(s) −COOH group is/are a.) Sulphanilic acidb.) Picric acidc.) Aspirind.) Ascorbic acid
Answer» The number of compound(s) given below which contain(s) $- C O O H$ group is/are a.) Sulphanilic acid b.) Picric acid c.) Aspirin d.) Ascorbic acid

Discussion

28.	9. what is the n factor of K2Cr2O7 in alkaline medium?
Answer» 9. what is the n factor of K2Cr2O7 in alkaline medium?

Discussion

29.	BOD refers to
Answer» BOD refers to

Discussion

30.	Liquid water decomposes into gaseous hydrogen and gaseous oxygen. The best description of this reaction is:
Answer» Liquid water decomposes into gaseous hydrogen and gaseous oxygen. The best description of this reaction is:

Discussion

31.	ntHeat of formation of C2H4 = 12.5 kcaln ntHeat of atomisation of C = 171 kcaln ntHeat of atomisation of H = 52.1 kcaln ntBond energy C-H = 99.3 kcaln ntWhat is C=C bond energy ?n ntn
Answer» ntHeat of formation of C2H4 = 12.5 kcaln ntHeat of atomisation of C = 171 kcaln ntHeat of atomisation of H = 52.1 kcaln ntBond energy C-H = 99.3 kcaln ntWhat is C=C bond energy ?n ntn

Discussion

32.	22. Find the number of group and periodof following elements according to given conditions :- 1)Co :- if three spin quantum no. are possible 2)Cr :- if one spin quantum no. are possible.
Answer» 22. Find the number of group and periodof following elements according to given conditions :- 1)Co :- if three spin quantum no. are possible 2)Cr :- if one spin quantum no. are possible.

Discussion

33.	Lysine has pKa1=2.18, pKa2=8.95, pKa3=10.53.In which structure lysine will be present at pH=9.7.
Answer» $Lysine has p K_{a_{1}} = 2.18, p K_{a_{2}} = 8.95, p K_{a_{3}} = 10.53$ . In which structure lysine will be present at $p H = 9.7$ .

Discussion

34.	Which is correct about ionization potential
Answer» Which is correct about ionization potential

Discussion

35.	Arrange in increasing order of boiling point H2S, H2O, H2Se, H2Te
Answer» Arrange in increasing order of boiling point $H_{2} S, H_{2} O, H_{2} S e, H_{2} T e$

Discussion

36.	what is alkynes and nomenclature?
Answer» what is alkynes and nomenclature?

Discussion

37.	If Kp is the equilibrium constant in terms of partial pressure and Kχ is the equilibrium constant in terms of mole fraction, then the relation between Kp and Kχ for the following reaction is given by: N2O4(g)⇋2NO2(g)
Answer» If $K_{p}$ is the equilibrium constant in terms of partial pressure and $K_{χ}$ is the equilibrium constant in terms of mole fraction, then the relation between $K_{p}$ and $K_{χ}$ for the following reaction is given by: $N_{2} O_{4} (g) ⇋ 2 N O_{2} (g)$

Discussion

38.	The volume of 0.1 M sulphuric acid required to neutralise 30 ml of 2.0 M sodium hydroxide is
Answer» The volume of 0.1 M sulphuric acid required to neutralise 30 ml of 2.0 M sodium hydroxide is

Discussion

39.	Given below are the half cell reactions:Mn2+(aq)+2e−→Mn(s); E0=−1.18 V2(Mn+3(aq)+e−→Mn2+(aq)); E0=+1.51 VThe E0 for 3Mn2+(aq)→Mn(s)+2Mn3+(aq) cell reaction will be:
Answer» Given below are the half cell reactions: $M n^{2 +} (a q) + 2 e^{-} \to M n (s); E^{0} = - 1.18 V$ $2 (M n^{+ 3} (a q) + e^{-} \to M n^{2 +} (a q)); E^{0} = + 1.51 V$ The $E^{0}$ for $3 M n^{2 +} (a q) \to M n (s) + 2 M n^{3 +} (a q)$ cell reaction will be:

Discussion

40.	The IUPAC name of the compound CH2(COOH)2 is
Answer» The IUPAC name of the compound $C H_{2} (C O O H)_{2}$ is

Discussion

41.	What is stoichiometry calculation??
Answer» What is stoichiometry calculation??

Discussion

42.	Is lanthanide contraction applicable while moving down in all the groups of d-block or only application while moving down in groups 3rd and 4th ?
Answer» Is lanthanide contraction applicable while moving down in all the groups of d-block or only application while moving down in groups 3rd and 4th ?

Discussion

43.	Sort out the following in the order of increasing acidity:
Answer» Sort out the following in the order of increasing acidity:

Discussion

44.	Calculate number of gram molecules and gram atom of oxygen present in 6.022×10^25 molecules of CO
Answer» Calculate number of gram molecules and gram atom of oxygen present in 6.022×10^25 molecules of CO

Discussion

45.	The ionic radii of K+,Na+,Al3+ and Mg2+ are in the order
Answer» The ionic radii of $K^{+}, N a^{+}, A l^{3 +} and M g^{2 +}$ are in the order

Discussion

46.	Write reactively series of all metal
Answer» Write reactively series of all metal

Discussion

47.	A 300 g, 30% (w/w) NaOH solution is mixed with 500 g 40% (w/w) NaOH solution. What is the molality of final solution?
Answer» A $300 g$ , $30 %$ (w/w) NaOH solution is mixed with $500 g$ $40 %$ (w/w) $N a O H$ solution. What is the molality of final solution?

Discussion

48.	The addition of 1.0 g of a compound to 10 g of water increases the boiling point by 0.3 ∘C. The amount of compound needed to prepare a 500 mL 0.1 M solution is:(Given: Assume negligible dissociation or association of the compound, boiling point constant Kb of water =0.513 K kg mol−1)
Answer» The addition of $1.0 g$ of a compound to $10 g$ of water increases the boiling point by $0.3^{\circ} C .$ The amount of compound needed to prepare a $500 mL$ $0.1 M$ solution is: (Given: Assume negligible dissociation or association of the compound, boiling point constant $K_{b}$ of water $= 0.513 {K kg mol}^{- 1}$ )

Discussion

49.	3. How to find distribution coefficient in Nerst distribution law.
Answer» 3. How to find distribution coefficient in Nerst distribution law.

Discussion

50.	The impure 6 g of NaCl is dissolved in water and then treated with excess of silver nitrate solution. The weight of precipitate of silver chloride is found to be 14.35 g. The % purity of NaCl solution would be :
Answer» The impure $6 g$ of $N a C l$ is dissolved in water and then treated with excess of silver nitrate solution. The weight of precipitate of silver chloride is found to be $14.35 g$ . The $%$ purity of $N a C l$ solution would be :

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Which of the following compounds will exhibit geometrical isomerism?

In a double stranded DNA molecule, the percentage of cytosine is 18. What would be the percentage of adenine?

The correct order of the metallic character is:

What is the major product 'P' of the given reaction?

1) Are fluorine oxides more stable than iodine oxides? 2) what is the middle row anomaly for bromine oxides? Why can't it form multiple bonds with oxygen like cl?

Explain why inspite of nearly the same electronegativity, nitrogen forms hydrogen bonding while chlorine does not?

When to write silver an when to write argentate in a coordinate compound which contains the silver metal.?

Round off 4.05?

[Pl(NH3)6]Cl4 complex gives

In a deep sea expedition at depth of about 350 ft, a driver is subject to a pressure of approximately 10 atm. A gas cylinder carried by him contains 51.2 g of O2 and 326.4 g of He and has a volume of 10 L. What is the total pressure in the cylinder at 20 ∘C temperature?

48.How many unit cell are present in a cube shaped ideal crystal of NaCl of mass 1.00 g (1)5.14×10²¹ (2)1.28×10²¹ (3)1.71×10²¹ (4)2.57×10²¹

If Z is a compressibility factor, Van der Waals equation at low pressure can be written as

Diff between colloids and crystalloids

which of the following has highest boiling point? A.1 mole of glucose B.1 mole of kcl A.1 mole of glucose, B.1 mole of kcl,c.1 mole Al(NO3)3 ,D.1 mole of na2so4

49. 1 chloro 3 ido propane on reaction with KCN(1 mole each) in acetone gives

ntif 8 g mol of pcl5 heated in a closed vessel of 10 l capacity and 25 % of its dissociated into PCl3 and Cl2 at the equilibrium then value of kp will be equal to.n

Reaction of secondary and tertiary amines with nitrous acid

Calculatethe ‘spin only’ magnetic moment of M2+(aq)ion (Z =27).

What happens when 3-phenylprop-2-enal reacts with LiAlH4 ?

an element density 6.8g cm^{-3} occurs in bcc structure with cell edge 290 pm.Calculate the no. of atoms present in 200gm of elementv

The oxidation number of sulphur in sulphuric acid is

10.How many d orbitals ar einvolved in the formation of XeO3F2

41.A hydrogen electrode placed in buffer solution of CH3COONA and CH3COONA in the molar ratio c1:c2 and c2:c1 has oxidation potential E1 and E2 volts respectively at 298K(pH2=1atm).The Pka value of acetic acid will given by

The image of z1= -15-16i with respect to |z-1-i|=4 is

List all the elements in chemistry.

The number of compound(s) given below which contain(s) −COOH group is/are a.) Sulphanilic acidb.) Picric acidc.) Aspirind.) Ascorbic acid

9. what is the n factor of K2Cr2O7 in alkaline medium?

BOD refers to

Liquid water decomposes into gaseous hydrogen and gaseous oxygen. The best description of this reaction is:

ntHeat of formation of C2H4 = 12.5 kcaln ntHeat of atomisation of C = 171 kcaln ntHeat of atomisation of H = 52.1 kcaln ntBond energy C-H = 99.3 kcaln ntWhat is C=C bond energy ?n ntn

22. Find the number of group and periodof following elements according to given conditions :- 1)Co :- if three spin quantum no. are possible 2)Cr :- if one spin quantum no. are possible.

Lysine has pKa1=2.18, pKa2=8.95, pKa3=10.53.In which structure lysine will be present at pH=9.7.

Which is correct about ionization potential

Arrange in increasing order of boiling point H2S, H2O, H2Se, H2Te

what is alkynes and nomenclature?

If Kp is the equilibrium constant in terms of partial pressure and Kχ is the equilibrium constant in terms of mole fraction, then the relation between Kp and Kχ for the following reaction is given by: N2O4(g)⇋2NO2(g)

The volume of 0.1 M sulphuric acid required to neutralise 30 ml of 2.0 M sodium hydroxide is

Given below are the half cell reactions:Mn2+(aq)+2e−→Mn(s); E0=−1.18 V2(Mn+3(aq)+e−→Mn2+(aq)); E0=+1.51 VThe E0 for 3Mn2+(aq)→Mn(s)+2Mn3+(aq) cell reaction will be:

The IUPAC name of the compound CH2(COOH)2 is

What is stoichiometry calculation??

Is lanthanide contraction applicable while moving down in all the groups of d-block or only application while moving down in groups 3rd and 4th ?

Sort out the following in the order of increasing acidity:

Calculate number of gram molecules and gram atom of oxygen present in 6.022×10^25 molecules of CO

The ionic radii of K+,Na+,Al3+ and Mg2+ are in the order

Write reactively series of all metal

A 300 g, 30% (w/w) NaOH solution is mixed with 500 g 40% (w/w) NaOH solution. What is the molality of final solution?

The addition of 1.0 g of a compound to 10 g of water increases the boiling point by 0.3 ∘C. The amount of compound needed to prepare a 500 mL 0.1 M solution is:(Given: Assume negligible dissociation or association of the compound, boiling point constant Kb of water =0.513 K kg mol−1)

3. How to find distribution coefficient in Nerst distribution law.

The impure 6 g of NaCl is dissolved in water and then treated with excess of silver nitrate solution. The weight of precipitate of silver chloride is found to be 14.35 g. The % purity of NaCl solution would be :