46295 + Interview Questions in Chemistry

1.	Which of the following option are correct for [Fe(CN)6]3− complex? (a) d2sp3 hybridisation (b) sp3d2 hybridisation (c) Paramagnetic (d) Diamagnetic
Answer» Which of the following option are correct for $[F e (C N)_{6}]^{3 -}$ complex? (a) $d^{2} s p^{3}$ hybridisation (b) $s p^{3} d^{2}$ hybridisation (c) Paramagnetic (d) Diamagnetic

Discussion

2.	Which among the following compounds is the strongest acid?
Answer» Which among the following compounds is the strongest acid?

Discussion

3.	Density of iron is 6.5 gram per cc and of magnesium is 2.6gram per cc. Both metal crystallises into fcc arrangment of unit cell and radius of iron atom is 154pm.On the basis of above information radius of magnesium atom would be closet to
Answer» Density of iron is 6.5 gram per cc and of magnesium is 2.6gram per cc. Both metal crystallises into fcc arrangment of unit cell and radius of iron atom is 154pm.On the basis of above information radius of magnesium atom would be closet to

Discussion

4.	With respect to Inductive effect,We know that all cations are withdrawing groups(-I), so in this case is Chlorine an exception?(Because, in C–C–C–Cl, Chlorine is a withdrawing group.
Answer» With respect to Inductive effect, We know that all cations are withdrawing groups(-I), so in this case is Chlorine an exception?(Because, in C–C–C–Cl, Chlorine is a withdrawing group.

Discussion

5.	methanol reacts with formic acid and ethanoic acid which is more reactive
Answer» methanol reacts with formic acid and ethanoic acid which is more reactive

Discussion

6.	Calculate the molality of 25.5% (w/w) H2O2 aqueous solution? (Give your answer upto two decimal places.)
Answer» Calculate the molality of $25.5 %$ (w/w) $H_{2} O_{2}$ aqueous solution? (Give your answer upto two decimal places.)

Discussion

7.	If Kc for H2(g)+I2(g)→2HI(g) is 50, then Kc for HI(g) 12H2+12I2 is
Answer» $I f K_{c} f o r H_{2 (g)} + I_{2 (g)} \to 2 H I_{(g)} i s 50, t h e n K_{c} f o r H I_{(} g) \frac{1}{2} H_{2} + \frac{1}{2} I_{2} i s$

Discussion

8.	The C-H bond distance is longest in:
Answer» The C-H bond distance is longest in:

Discussion

9.	Describe the following:(i) Acetylation(ii) Cannizzaroreaction(iii) Crossaldol condensation (iv) Decarboxylation
Answer» Describe the following: (i) Acetylation (ii) Cannizzaro reaction (iii) Cross aldol condensation (iv) Decarboxylation

9.

Describe the following:(i) Acetylation(ii) Cannizzaroreaction(iii) Crossaldol condensation (iv) Decarboxylation

Answer»

Describe the following:

(i) Acetylation

(ii) Cannizzaro
reaction

(iii) Cross
aldol condensation

(iv)
Decarboxylation

Discussion

10.	How many Coulombs of electricity are required for the oxidation of one mol of water to dioxygen?
Answer» How many Coulombs of electricity are required for the oxidation of one mol of water to dioxygen?

Discussion

11.	ntMaximum amount of Barium sulphate in terms of moles precipitated on mixing equal volumes 1 litre each of Barium Chloride(0.5M) with sulfuric acid(1M) will correspond to-n nt1) 0.5molesn nt2) 1.0n nt3) 1.5n nt4) 2.0molesn
Answer» ntMaximum amount of Barium sulphate in terms of moles precipitated on mixing equal volumes 1 litre each of Barium Chloride(0.5M) with sulfuric acid(1M) will correspond to-n nt1) 0.5molesn nt2) 1.0n nt3) 1.5n nt4) 2.0molesn

Discussion

12.	Q14. (a) Give mechanism of following reaction: {2CH_3CH_2OH→ CH_3CH_2OCH_2CH_3 Does this reaction follow SN' OR SN' pathway?
Answer» Q14. (a) Give mechanism of following reaction: {2CH_3CH_2OH→ CH_3CH_2OCH_2CH_3 Does this reaction follow SN' OR SN' pathway?

Discussion

13.	Mass of a Mole of electron is
Answer» Mass of a Mole of electron is

Discussion

14.	In an experiment, 4 g of a metallic oxide was reduced to 2.8 g of the metal. If the atomic mass of the metal is 56 g mol-, the formula of the oxide is(а) M20(c) M2O3(b) МО(d) MO2
Answer» In an experiment, 4 g of a metallic oxide was reduced to 2.8 g of the metal. If the atomic mass of the metal is 56 g mol-, the formula of the oxide is(а) M20(c) M2O3(b) МО(d) MO2

Discussion

15.	For a reaction which is of first order, the fraction of reactants remaining after 160 min if its half life is 40 min is
Answer» For a reaction which is of first order, the fraction of reactants remaining after 160 min if its half life is 40 min is

Discussion

16.	If the ionisation energy of hydrogen atom is 13.6 eV, what will be the ionisation energy of He+ and Li2+ ions respectively?
Answer» If the ionisation energy of hydrogen atom is $13.6 e V$ , what will be the ionisation energy of $H e^{+}$ and $L i^{2 +}$ ions respectively?

Discussion

17.	40. How many gram of diabetic acid molecular weight 200 should be present in 100 ml of the aqueous solution to give strength of 0.1 N.
Answer» 40. How many gram of diabetic acid molecular weight 200 should be present in 100 ml of the aqueous solution to give strength of 0.1 N.

Discussion

18.	what is the +7 oxidation stag
Answer» what is the +7 oxidation stag

Discussion

19.	Are there any advantages of negative catalyst?
Answer» Are there any advantages of negative catalyst?

Discussion

20.	What r planar compounds, Y do they show non aromatic
Answer» What r planar compounds, Y do they show non aromatic

Discussion

21.	If you have 2 moles of A and 3 moles of B, Identify the limiting reagent in the following reaction. A + B → AB
Answer» If you have 2 moles of A and 3 moles of B, Identify the limiting reagent in the following reaction. A + B → AB

Discussion

22.	A sample of amonium phosphate contain 3.18moles of hydrogen, calculate the number of moles of oxygen?
Answer» A sample of amonium phosphate contain 3.18moles of hydrogen, calculate the number of moles of oxygen?

Discussion

23.	Calculate the molality of a 2 M aqueous salt solution in a solvent X, if the mole fraction of the salt in the solution is 0.5.(Molar mass of solvent = 40 g/mol)
Answer» Calculate the molality of a $2 M$ aqueous salt solution in a solvent X, if the mole fraction of the salt in the solution is $0.5$ . (Molar mass of solvent = 40 g/mol)

Discussion

24.	What is X in the following sequence of reactions?XNa−−−→−12H2ZNaOH/CaO−−−−−−−→CH4
Answer» What is $X$ in the following sequence of reactions? $X N a - -- \to \frac{- 1}{2} H_{2} Z N a O H / C a O - ------ \to C H_{4}$

24.

What is X in the following sequence of reactions?XNa−−−→−12H2ZNaOH/CaO−−−−−−−→CH4

Answer»

What is $X$ in the following sequence of reactions?

$X N a - -- \to \frac{- 1}{2} H_{2} Z N a O H / C a O - ------ \to C H_{4}$

Discussion

25.	The decay product of tritium is a 11H b. 21H c. 32He d.0−1e
Answer» The decay product of tritium is a $_{1}^{1} H$ b. $_{1}^{2} H$ c. $_{2}^{3} H e$ d. $_{- 1}^{0}$ e

25.

The decay product of tritium is a 11H b. 21H c. 32He d.0−1e

Answer»

The decay product of tritium is

a $_{1}^{1} H$ b. $_{1}^{2} H$ c. $_{2}^{3} H e$ d. $_{- 1}^{0}$ e

Discussion

26.	The charge required for oxidation of one mole Mn3O4 into MnO4-- in presence of alkaline medium.
Answer» The charge required for oxidation of one mole Mn3O4 into MnO4-- in presence of alkaline medium.

Discussion

27.	Which one of the following molecules will form a linear polymeric structure due to hydrogen bonding?
Answer» Which one of the following molecules will form a linear polymeric structure due to hydrogen bonding?

Discussion

28.	2M of 1ooml of Na2SO4 is mixed with 3M of 100ml of NaCl with 1M of 200ml of CaCl2.The ratio of conc. of cation and
Answer» 2M of 1ooml of Na2SO4 is mixed with 3M of 100ml of NaCl with 1M of 200ml of CaCl2.The ratio of conc. of cation and

Discussion

29.	no. of possible orbitals kf all tyoes if n=3 is
Answer» no. of possible orbitals kf all tyoes if n=3 is

Discussion

30.	Question 24Unscramble the jumbled words given below, related to synthetic materials.(a) Anory(b) Lopmery(c) Relyteen(d) Laspict(e) Yespolter(f) Felton
Answer» Question 24 Unscramble the jumbled words given below, related to synthetic materials. (a) Anory (b) Lopmery (c) Relyteen (d) Laspict (e) Yespolter (f) Felton

Discussion

31.	53.Why electron cloud of valance shell is symmetrically distributed when octet is complete?
Answer» 53.Why electron cloud of valance shell is symmetrically distributed when octet is complete?

Discussion

32.	possible isomers of c4H10
Answer» possible isomers of c4H10

Discussion

33.	The sum of total number of moles of PhNHNH2 used with A and B is
Answer» The sum of total number of moles of $P h N H N H_{2}$ used with A and B is

Discussion

34.	Time Period T of a small drop of liquid ( due to surface tension) depends on density p radius r and surface tension s. The relation is T=?
Answer» Time Period T of a small drop of liquid ( due to surface tension) depends on density p radius r and surface tension s. The relation is T=?

Discussion

35.	The vapour density of a mixture containing NO2 and N2O4 is 27.6. The moles of N2O4 in 10 moles of the mixture is:
Answer» The vapour density of a mixture containing $N O_{2}$ and $N_{2} O_{4}$ is 27.6. The moles of $N_{2} O_{4}$ in 10 moles of the mixture is:

Discussion

36.	For an alkane with 8 carbon atoms, the most thermodynamically stable compound is:
Answer» For an alkane with 8 carbon atoms, the most thermodynamically stable compound is:

Discussion

37.	WHAT IS THE EFFECT ON CHANGE IN NO. OF MOLECULE/ATOM IN AVOGADRO NUMBER
Answer» WHAT IS THE EFFECT ON CHANGE IN NO. OF MOLECULE/ATOM IN AVOGADRO NUMBER

Discussion

38.	2. Give solubility order for(i) alkali metal hydroxide(iii) alkali metal per chlorates(v) alkaline earth metal carbonates(vii) alkali metal bicarbonates(ix) lead (II) halides(ii) Sodium halides(iv) alkali metal oxides(vi) alkali metal carbonates(viii) silver halides(x) mercury (I) halides
Answer» 2. Give solubility order for(i) alkali metal hydroxide(iii) alkali metal per chlorates(v) alkaline earth metal carbonates(vii) alkali metal bicarbonates(ix) lead (II) halides(ii) Sodium halides(iv) alkali metal oxides(vi) alkali metal carbonates(viii) silver halides(x) mercury (I) halides

Discussion

39.	What is E0 in Electromagnetic force? What does 1/4PiE0 stand for? How to pronounce E0?
Answer» What is E0 in Electromagnetic force? What does 1/4PiE0 stand for? How to pronounce E0?

Discussion

40.	How many grams of calcium oxide are obtained by heating 50 g of CaCO3(s)?
Answer» How many grams of calcium oxide are obtained by heating $50 g$ of $C a C O_{3} (s)$ ?

Discussion

41.	When 31 g of non-volatile solute is dissovled in 100 g of water, the vapour pressure is lowered by 1.75 mm. If the vapour pressure of water at 25 oC is 17.5 mm, what is the molecular mass of solute ( in g)?(Use 10018=5.55)
Answer» When $31 g$ of non-volatile solute is dissovled in $100 g$ of water, the vapour pressure is lowered by $1.75 mm$ . If the vapour pressure of water at $25^{o} C$ is $17.5 mm$ , what is the molecular mass of solute $(in g)$ ? (Use $\frac{100}{18} = 5.55$ )

Discussion

42.	If Ksp of Ag2CO3 is, 8×10−12, the molar solubility ofAg2CO3 in 0.1 M AgNO3 is:
Answer» If $K_{s p}$ of $A g_{2} C O_{3}$ is, $8 \times 10^{- 12}$ , the molar solubility of $A g_{2} C O_{3}$ in $0.1 M A g N O_{3}$ is:

Discussion

43.	7 minimum distance between corner and tetrahedral void is X in ccp unit cell then,find the length of face diagonal?
Answer» 7 minimum distance between corner and tetrahedral void is X in ccp unit cell then,find the length of face diagonal?

Discussion

44.	97. 100 ml of 0.1 M CaCl2 solution is mixed with25 ml of 0.3 N AgNO3 solution. Moles ofchloride ions remain unreacted is(1) 2.5(2) 5 x 10-3(3) 2.5 x 10-3(4) 1.25 x 10-
Answer» 97. 100 ml of 0.1 M CaCl2 solution is mixed with25 ml of 0.3 N AgNO3 solution. Moles ofchloride ions remain unreacted is(1) 2.5(2) 5 x 10-3(3) 2.5 x 10-3(4) 1.25 x 10-

Discussion

45.	The density of 3M solution of NaCl is 1.25 g/mL. Calculate molality of the solution.
Answer» The density of 3M solution of NaCl is 1.25 g/mL. Calculate molality of the solution.

Discussion

46.	In a cubic unit cell, atom A are present at half of the corners, B are present at 1/3 rd of face centers and arom C are present at a quarter of edge centres. Find out the formula?
Answer» In a cubic unit cell, atom A are present at half of the corners, B are present at 1/3 rd of face centers and arom C are present at a quarter of edge centres. Find out the formula?

Discussion

47.	A reversible reaction having two reac†an tss in equilibrium if the concentration of reac†an t are doubled the equilibrium cons†an t will be ?Give reason
Answer» A reversible reaction having two reac†an tss in equilibrium if the concentration of reac†an t are doubled the equilibrium cons†an t will be ?Give reason

Discussion

48.	induced charge "q "can never be greater than inducing charge "Q",why?
Answer» induced charge "q "can never be greater than inducing charge "Q",why?

Discussion

49.	How to find rms value from graphs indicating squareshapes Triangle shapes etc.
Answer» How to find rms value from graphs indicating squareshapes Triangle shapes etc.

Discussion

50.	Consider the following redox reaction :S4O2−6(aq)+Al(s)→H2S(aq)+Al3+(aq)What will be the net balanced equation in an acidic medium (by oxidation number method).
Answer» Consider the following redox reaction : $S_{4} O_{6}^{2 -} (a q) + A l (s) \to H_{2} S (a q) + A l^{3 +} (a q)$ What will be the net balanced equation in an acidic medium (by oxidation number method).

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Which of the following option are correct for [Fe(CN)6]3− complex? (a) d2sp3 hybridisation (b) sp3d2 hybridisation (c) Paramagnetic (d) Diamagnetic

Which among the following compounds is the strongest acid?

Density of iron is 6.5 gram per cc and of magnesium is 2.6gram per cc. Both metal crystallises into fcc arrangment of unit cell and radius of iron atom is 154pm.On the basis of above information radius of magnesium atom would be closet to

With respect to Inductive effect,We know that all cations are withdrawing groups(-I), so in this case is Chlorine an exception?(Because, in C–C–C–Cl, Chlorine is a withdrawing group.

methanol reacts with formic acid and ethanoic acid which is more reactive

Calculate the molality of 25.5% (w/w) H2O2 aqueous solution? (Give your answer upto two decimal places.)

If Kc for H2(g)+I2(g)→2HI(g) is 50, then Kc for HI(g) 12H2+12I2 is

The C-H bond distance is longest in:

Describe the following:(i) Acetylation(ii) Cannizzaroreaction(iii) Crossaldol condensation (iv) Decarboxylation

How many Coulombs of electricity are required for the oxidation of one mol of water to dioxygen?

ntMaximum amount of Barium sulphate in terms of moles precipitated on mixing equal volumes 1 litre each of Barium Chloride(0.5M) with sulfuric acid(1M) will correspond to-n nt1) 0.5molesn nt2) 1.0n nt3) 1.5n nt4) 2.0molesn

Q14. (a) Give mechanism of following reaction: {2CH_3CH_2OH→ CH_3CH_2OCH_2CH_3 Does this reaction follow SN' OR SN' pathway?

Mass of a Mole of electron is

In an experiment, 4 g of a metallic oxide was reduced to 2.8 g of the metal. If the atomic mass of the metal is 56 g mol-, the formula of the oxide is(а) M20(c) M2O3(b) МО(d) MO2

For a reaction which is of first order, the fraction of reactants remaining after 160 min if its half life is 40 min is

If the ionisation energy of hydrogen atom is 13.6 eV, what will be the ionisation energy of He+ and Li2+ ions respectively?

40. How many gram of diabetic acid molecular weight 200 should be present in 100 ml of the aqueous solution to give strength of 0.1 N.

what is the +7 oxidation stag

Are there any advantages of negative catalyst?

What r planar compounds, Y do they show non aromatic

If you have 2 moles of A and 3 moles of B, Identify the limiting reagent in the following reaction. A + B → AB

A sample of amonium phosphate contain 3.18moles of hydrogen, calculate the number of moles of oxygen?

Calculate the molality of a 2 M aqueous salt solution in a solvent X, if the mole fraction of the salt in the solution is 0.5.(Molar mass of solvent = 40 g/mol)

What is X in the following sequence of reactions?XNa−−−→−12H2ZNaOH/CaO−−−−−−−→CH4

The decay product of tritium is a 11H b. 21H c. 32He d.0−1e

The charge required for oxidation of one mole Mn3O4 into MnO4-- in presence of alkaline medium.

Which one of the following molecules will form a linear polymeric structure due to hydrogen bonding?

2M of 1ooml of Na2SO4 is mixed with 3M of 100ml of NaCl with 1M of 200ml of CaCl2.The ratio of conc. of cation and

no. of possible orbitals kf all tyoes if n=3 is

Question 24Unscramble the jumbled words given below, related to synthetic materials.(a) Anory(b) Lopmery(c) Relyteen(d) Laspict(e) Yespolter(f) Felton

53.Why electron cloud of valance shell is symmetrically distributed when octet is complete?

possible isomers of c4H10

The sum of total number of moles of PhNHNH2 used with A and B is

Time Period T of a small drop of liquid ( due to surface tension) depends on density p radius r and surface tension s. The relation is T=?

The vapour density of a mixture containing NO2 and N2O4 is 27.6. The moles of N2O4 in 10 moles of the mixture is:

For an alkane with 8 carbon atoms, the most thermodynamically stable compound is:

WHAT IS THE EFFECT ON CHANGE IN NO. OF MOLECULE/ATOM IN AVOGADRO NUMBER

2. Give solubility order for(i) alkali metal hydroxide(iii) alkali metal per chlorates(v) alkaline earth metal carbonates(vii) alkali metal bicarbonates(ix) lead (II) halides(ii) Sodium halides(iv) alkali metal oxides(vi) alkali metal carbonates(viii) silver halides(x) mercury (I) halides

What is E0 in Electromagnetic force? What does 1/4*Pi*E0 stand for? How to pronounce E0?

How many grams of calcium oxide are obtained by heating 50 g of CaCO3(s)?

When 31 g of non-volatile solute is dissovled in 100 g of water, the vapour pressure is lowered by 1.75 mm. If the vapour pressure of water at 25 oC is 17.5 mm, what is the molecular mass of solute ( in g)?(Use 10018=5.55)

If Ksp of Ag2CO3 is, 8×10−12, the molar solubility ofAg2CO3 in 0.1 M AgNO3 is:

7 minimum distance between corner and tetrahedral void is X in ccp unit cell then,find the length of face diagonal?

97. 100 ml of 0.1 M CaCl2 solution is mixed with25 ml of 0.3 N AgNO3 solution. Moles ofchloride ions remain unreacted is(1) 2.5(2) 5 x 10-3(3) 2.5 x 10-3(4) 1.25 x 10-

The density of 3M solution of NaCl is 1.25 g/mL. Calculate molality of the solution.

In a cubic unit cell, atom A are present at half of the corners, B are present at 1/3 rd of face centers and arom C are present at a quarter of edge centres. Find out the formula?

A reversible reaction having two reac†an tss in equilibrium if the concentration of reac†an t are doubled the equilibrium cons†an t will be ?Give reason

induced charge "q "can never be greater than inducing charge "Q",why?

How to find rms value from graphs indicating squareshapes Triangle shapes etc.

Consider the following redox reaction :S4O2−6(aq)+Al(s)→H2S(aq)+Al3+(aq)What will be the net balanced equation in an acidic medium (by oxidation number method).

What is E0 in Electromagnetic force? What does 1/4PiE0 stand for? How to pronounce E0?