46295 + Interview Questions in Chemistry

1.	Column 1: Type of structure, Column 2: Co-ordination number of cation, Column 3: Co-ordination number of anion. Column 1Column 2Column 3(I)FCC(i)12(P)4(II)Anti-Flourite(ii)6(Q)12(III)BCC(iii)8(R)8(IV)Flourite(iv)4(S)6 The only correct combination for CaF2 is:
Answer» Column 1: Type of structure, Column 2: Co-ordination number of cation, Column 3: Co-ordination number of anion. $\begin{matrix} Column 1 & Column 2 & Column 3 (I) & FCC & (i) & 12 & (P) & 4 (II) & Anti-Flourite & (ii) & 6 & (Q) & 12 (III) & BCC & (iii) & 8 & (R) & 8 (IV) & Flourite & (iv) & 4 & (S) & 6 \end{matrix}$ The only correct combination for $C a F_{2}$ is:

1.

Column 1: Type of structure, Column 2: Co-ordination number of cation, Column 3: Co-ordination number of anion. Column 1Column 2Column 3(I)FCC(i)12(P)4(II)Anti-Flourite(ii)6(Q)12(III)BCC(iii)8(R)8(IV)Flourite(iv)4(S)6 The only correct combination for CaF2 is:

Answer»

Column 1: Type of structure, Column 2: Co-ordination number of cation, Column 3: Co-ordination number of anion.

$\begin{matrix} Column 1 & Column 2 & Column 3 (I) & FCC & (i) & 12 & (P) & 4 (II) & Anti-Flourite & (ii) & 6 & (Q) & 12 (III) & BCC & (iii) & 8 & (R) & 8 (IV) & Flourite & (iv) & 4 & (S) & 6 \end{matrix}$

The only correct combination for $C a F_{2}$ is:

Discussion

2.	Among the following, the incorrect order is:
Answer» Among the following, the incorrect order is:

Discussion

3.	Why HCHO is more reactive in mixed Cannizaro than PhCHO
Answer» Why HCHO is more reactive in mixed Cannizaro than PhCHO

Discussion

4.	5. During conductometric titration, why concentration of the solution added from burette is taken muxh higher than the solution is to be titrated?
Answer» 5. During conductometric titration, why concentration of the solution added from burette is taken muxh higher than the solution is to be titrated?

Discussion

5.	using mo theory , explain that f2 molecule has single bond, o2 molecule has double bond while n2 molecules has triple bond
Answer» using mo theory , explain that f2 molecule has single bond, o2 molecule has double bond while n2 molecules has triple bond

Discussion

6.	5 gm of an organic substance is analysed by Kjeldahl's method. The liberated NH3 is titrated against 53 mL of 0.1 N H2SO4 solution. The percentage of nitrogen in the organic substance is approximately (round-off to the first decimal place) x2, where x is .
Answer» 5 gm of an organic substance is analysed by Kjeldahl's method. The liberated $N H_{3}$ is titrated against 53 mL of 0.1 N $H_{2} S O_{4}$ solution. The percentage of nitrogen in the organic substance is approximately (round-off to the first decimal place) $\frac{x}{2}$ , where x is .

Discussion

7.	The oxidation half reaction for following reaction is Fe2+(aq) + Cr2O72-(aq) → Fe3+ (aq) + Cr3+(aq)
Answer» The oxidation half reaction for following reaction is Fe²⁺(aq) + Cr₂O₇^2-(aq) → Fe³⁺ (aq) + Cr³⁺(aq)

Discussion

8.	oxidation num of h2o
Answer» oxidation num of h2o

Discussion

9.	Calculate solubility of AgCl in 0.1 M NaCl at 25o C if its solubility product at same temperature is 2.0×10−10 mol2L−2.
Answer» Calculate solubility of $A g C l$ in $0.1 M N a C l$ at $25^{o} C$ if its solubility product at same temperature is $2.0 \times 10^{- 10} m o l^{2} L^{- 2}$ .

Discussion

10.	Describe electric field through disc and concept of incoming and exiting flux
Answer» Describe electric field through disc and concept of incoming and exiting flux

Discussion

11.	5.6g of an organic compound on burning with excess of oxygen gave 17.6 g of CO2 and 7.2 g of H2O the organic compound is
Answer» 5.6g of an organic compound on burning with excess of oxygen gave 17.6 g of CO2 and 7.2 g of H2O the organic compound is

Discussion

12.	Why is equivalent mass of li in li3n is 7? Shouldn't it be 21?
Answer» Why is equivalent mass of li in li3n is 7? Shouldn't it be 21?

Discussion

13.	Two oxides of a metal contain 50% and 40%metal M respectively. If the formula of the firstoxide is MO2, the formula of the second oxidewill be (a) MO2 (b) MO3 (c) M2O (d) M2O5
Answer» Two oxides of a metal contain 50% and 40% metal M respectively. If the formula of the first oxide is MO2, the formula of the second oxide will be (a) MO2 (b) MO3 (c) M2O (d) M2O5

Discussion

14.	What is meant by latent heat or latent heat of fusion? How will the state of matter transform if latent heat is given off?
Answer» What is meant by latent heat or latent heat of fusion? How will the state of matter transform if latent heat is given off?

Discussion

15.	Select the correct statements(s) with respect to oxides and oxoanions of transition metals.
Answer» Select the correct statements(s) with respect to oxides and oxoanions of transition metals.

Discussion

16.	Which of the following has the longest metal-carbon (M−C) bond length?
Answer» Which of the following has the longest metal-carbon $(M - C)$ bond length?

Discussion

17.	In the formation of N+2 from N2, the electron is removed from:
Answer» In the formation of $N_{2}^{+}$ from $N_{2}$ , the electron is removed from:

Discussion

18.	48. A sample of sulphuric acid is 49% by mass . 100 ml of it on titration with 12 N NaOH required 50ml of NaOH solution . The density of the sample of sulphuric acid is
Answer» 48. A sample of sulphuric acid is 49% by mass . 100 ml of it on titration with 12 N NaOH required 50ml of NaOH solution . The density of the sample of sulphuric acid is

Discussion

19.	If boiling point of Azeotropic mixture has more boiling point than its components, then it is called ___ azeotrope.
Answer» If boiling point of Azeotropic mixture has more boiling point than its components, then it is called ___ azeotrope.

Discussion

20.	The substances which relieve anxiety, reduce mental tension and induce sleep are called:
Answer» The substances which relieve anxiety, reduce mental tension and induce sleep are called:

Discussion

21.	Do we mean base of the vessel also when we are asked about walls of vessel
Answer» Do we mean base of the vessel also when we are asked about walls of vessel

Discussion

22.	BF3 doesn't have proton but still acts as an acid why?
Answer» BF3 doesn't have proton but still acts as an acid why?

Discussion

23.	In E2 mechanism, when the alkoxide ion attacks a primary alkyl halide, why does it attack the beta-hydrogen and not alpha or any other hydrogen?
Answer» In E2 mechanism, when the alkoxide ion attacks a primary alkyl halide, why does it attack the beta-hydrogen and not alpha or any other hydrogen?

Discussion

24.	is tyndal effect the property of suspensions?
Answer» is tyndal effect the property of suspensions?

Discussion

25.	WILL STRONTIUM REDUCE SN+4 TO SN+2. EXPLAIN ON THE BASIS OF STANDARD ELECTRODE POTENTIA
Answer» WILL STRONTIUM REDUCE SN+4 TO SN+2. EXPLAIN ON THE BASIS OF STANDARD ELECTRODE POTENTIA

Discussion

26.	What is lattice enthalpy and lattice energy?
Answer» What is lattice enthalpy and lattice energy?

Discussion

27.	Identify A, B and C in the given picture.
Answer» Identify A, B and C in the given picture.

Discussion

28.	Draw formulas for the first five members of each homologous series beginning with the following compounds. H−COOH CH3COCH3 H–CH=CH2
Answer» Draw formulas for the first five members of each homologous series beginning with the following compounds. $H - C O O H$ $C H_{3} C O C H_{3}$ $H - C H = C H_{2}$

28.

Draw formulas for the first five members of each homologous series beginning with the following compounds. H−COOH CH3COCH3 H–CH=CH2

Answer»

Draw formulas for the first five members of each homologous series beginning with the following compounds.

$H - C O O H$

$C H_{3} C O C H_{3}$

$H - C H = C H_{2}$

Discussion

29.	Van der Waal’s constant “a” is a measure of
Answer» Van der Waal’s constant “a” is a measure of

Discussion

30.	how to find moles if molar vol. or mass is given
Answer» how to find moles if molar vol. or mass is given

Discussion

31.	Which type of biomolecules have some structural similarity with synthetic polyamides? What is similarity?
Answer» Which type of biomolecules have some structural similarity with synthetic polyamides? What is similarity?

Discussion

32.	In the following first order competing reactionsA + Reagent → Product. B + Reagent → ProductThe ratio of K1 / K2 if only 50% of B will have been reacted, when 94% of A has been reactedis(1) 4.06(3) 2.06(2) 0.246(4) 0.06
Answer» In the following first order competing reactionsA + Reagent → Product. B + Reagent → ProductThe ratio of K1 / K2 if only 50% of B will have been reacted, when 94% of A has been reactedis(1) 4.06(3) 2.06(2) 0.246(4) 0.06

Discussion

33.	An electron has kinetic energy 2.8×10−23J de-Broglie wavelength will be nearly me=9.1×10−31kg
Answer» An electron has kinetic energy $2.8 \times 10^{- 23} J$ de-Broglie wavelength will be nearly $m_{e} = 9.1 \times 10^{- 31} k g$

Discussion

34.	H- ion have larger size than f- why
Answer» H- ion have larger size than f- why

Discussion

35.	Calculate the minimum frequency required to remove a first shell electron completely from a hydrogen atom. Given: R =1.097×10−2 nm−1
Answer» Calculate the minimum frequency required to remove a first shell electron completely from a hydrogen atom. Given: R $= 1.097 \times 10^{- 2}$ nm $^{- 1}$

Discussion

36.	which of the following have longest bond length 1.C=O 2.C=C 3.N=O 4.C≡ N
Answer» which of the following have longest bond length 1.C=O 2.C=C 3.N=O 4.C≡ N

Discussion

37.	Correct increasing order for the wavelength of absorbtion in the visible region for the complexes of Co3+ is:
Answer» Correct increasing order for the wavelength of absorbtion in the visible region for the complexes of $C o^{3 +}$ is:

Discussion

38.	In the following compound, according to the rules of IUPAC nomenclature, the groups designated as A, B, C will be numbered as:
Answer» In the following compound, according to the rules of IUPAC nomenclature, the groups designated as A, B, C will be numbered as:

38.

In the following compound, according to the rules of IUPAC nomenclature, the groups designated as A, B, C will be numbered as:

Answer»

In the following compound, according to the rules of IUPAC nomenclature, the groups designated as A, B, C will be numbered as:

Discussion

39.	For the following reaction, the product 'B' is:
Answer» For the following reaction, the product 'B' is:

Discussion

40.	In which of the following species, the depicted C is sp2 hybridized?
Answer» In which of the following species, the depicted $C$ is $s p^{2}$ hybridized?

Discussion

41.	Which of the following comtains maximum no. of molecules ?1- 1 g of CO2 2- 1 g of N23- 1 g of H24- 1 g of CH4
Answer» Which of the following comtains maximum no. of molecules ? 1- 1 g of CO2 2- 1 g of N2 3- 1 g of H2 4- 1 g of CH4

Discussion

42.	Which of the following compounds is most basic?
Answer» Which of the following compounds is most basic?

Discussion

43.	29. What is the small cage like structure present in an ice molecule?Explain it.
Answer» 29. What is the small cage like structure present in an ice molecule?Explain it.

Discussion

44.	The number of species having non-pyramidal shape among the following is _____.(A)SO3(B)NO−3(C)PCl3(D)CO2−3
Answer» The number of species having non-pyramidal shape among the following is _____. $(A) S O_{3}$ $(B) N O_{3}^{-}$ $(C) P C l_{3}$ $(D) C O_{3}^{2 -}$

Discussion

45.	An isotone of 8636Kr is _________.
Answer» An isotone of $_{36}^{86} K r$ is _________.

Discussion

46.	6.If compound MX4 has mew=0 then most probable geometry is •trigonal bipyramidal •square bipyramidal •tetrahedral
Answer» 6.If compound MX4 has mew=0 then most probable geometry is •trigonal bipyramidal •square bipyramidal •tetrahedral

Discussion

47.	80 What is secondary alcohol.
Answer» 80 What is secondary alcohol.

Discussion

48.	Why are aqueous solutions of an ionic compounds able to conduct electricity? [1 MARK]
Answer» Why are aqueous solutions of an ionic compounds able to conduct electricity? [1 MARK]

Discussion

49.	A copper wire of cross- sectional area 0.01 cm2 is under a tension of 20 N. Find the decrease in the cross-sectional area. Young modulus of copper = 1.11×Nm−2 and Poisson ratio = 0.32 \)
Answer» A copper wire of cross- sectional area 0.01 $c m^{2}$ is under a tension of 20 N. Find the decrease in the cross-sectional area. Young modulus of copper = $1.11 \times N m^{- 2}$ and Poisson ratio = 0.32 \)

Discussion

50.	At high temperature, the following equilibrium exists in a mixture of carbon, oxygen and their compound:C(s)+O2(g)⇌CO2(g) Keq1=10−22C(s)+O2(g)⇌2CO(g) Keq2=10−3C(s)+CO2(g)⇌2CO(g) Keq3=X2CO(s)+O2(g)⇌2CO2(g) Keq4=Y What is the value of XY?
Answer» At high temperature, the following equilibrium exists in a mixture of carbon, oxygen and their compound: $C (s) + O_{2} (g) ⇌ C O_{2} (g) {K e q}_{1} = 10^{- 2}$ $2 C (s) + O_{2} (g) ⇌ 2 C O (g) {K e q}_{2} = 10^{- 3}$ $C (s) + C O_{2} (g) ⇌ 2 C O (g) {K e q}_{3} = X$ $2 C O (s) + O_{2} (g) ⇌ 2 C O_{2} (g) {K e q}_{4} = Y$ What is the value of $\frac{X}{Y}$ ?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Column 1: Type of structure, Column 2: Co-ordination number of cation, Column 3: Co-ordination number of anion. Column 1Column 2Column 3(I)FCC(i)12(P)4(II)Anti-Flourite(ii)6(Q)12(III)BCC(iii)8(R)8(IV)Flourite(iv)4(S)6 The only correct combination for CaF2 is:

Among the following, the incorrect order is:

Why HCHO is more reactive in mixed Cannizaro than PhCHO

5. During conductometric titration, why concentration of the solution added from burette is taken muxh higher than the solution is to be titrated?

using mo theory , explain that f2 molecule has single bond, o2 molecule has double bond while n2 molecules has triple bond

5 gm of an organic substance is analysed by Kjeldahl's method. The liberated NH3 is titrated against 53 mL of 0.1 N H2SO4 solution. The percentage of nitrogen in the organic substance is approximately (round-off to the first decimal place) x2, where x is .

The oxidation half reaction for following reaction is Fe2+(aq) + Cr2O72-(aq) → Fe3+ (aq) + Cr3+(aq)

oxidation num of h2o

Calculate solubility of AgCl in 0.1 M NaCl at 25o C if its solubility product at same temperature is 2.0×10−10 mol2L−2.

Describe electric field through disc and concept of incoming and exiting flux

5.6g of an organic compound on burning with excess of oxygen gave 17.6 g of CO2 and 7.2 g of H2O the organic compound is

Why is equivalent mass of li in li3n is 7? Shouldn't it be 21?

Two oxides of a metal contain 50% and 40%metal M respectively. If the formula of the firstoxide is MO2, the formula of the second oxidewill be (a) MO2 (b) MO3 (c) M2O (d) M2O5

What is meant by latent heat or latent heat of fusion? How will the state of matter transform if latent heat is given off?

Select the correct statements(s) with respect to oxides and oxoanions of transition metals.

Which of the following has the longest metal-carbon (M−C) bond length?

In the formation of N+2 from N2, the electron is removed from:

48. A sample of sulphuric acid is 49% by mass . 100 ml of it on titration with 12 N NaOH required 50ml of NaOH solution . The density of the sample of sulphuric acid is

If boiling point of Azeotropic mixture has more boiling point than its components, then it is called ___ azeotrope.

The substances which relieve anxiety, reduce mental tension and induce sleep are called:

Do we mean base of the vessel also when we are asked about walls of vessel

BF3 doesn't have proton but still acts as an acid why?

In E2 mechanism, when the alkoxide ion attacks a primary alkyl halide, why does it attack the beta-hydrogen and not alpha or any other hydrogen?

is tyndal effect the property of suspensions?

WILL STRONTIUM REDUCE SN+4 TO SN+2. EXPLAIN ON THE BASIS OF STANDARD ELECTRODE POTENTIA

What is lattice enthalpy and lattice energy?

Identify A, B and C in the given picture.

Draw formulas for the first five members of each homologous series beginning with the following compounds. H−COOH CH3COCH3 H–CH=CH2

Van der Waal’s constant “a” is a measure of

how to find moles if molar vol. or mass is given

Which type of biomolecules have some structural similarity with synthetic polyamides? What is similarity?

In the following first order competing reactionsA + Reagent → Product. B + Reagent → ProductThe ratio of K1 / K2 if only 50% of B will have been reacted, when 94% of A has been reactedis(1) 4.06(3) 2.06(2) 0.246(4) 0.06

An electron has kinetic energy 2.8×10−23J de-Broglie wavelength will be nearly me=9.1×10−31kg

H- ion have larger size than f- why

Calculate the minimum frequency required to remove a first shell electron completely from a hydrogen atom. Given: R =1.097×10−2 nm−1

which of the following have longest bond length 1.C=O 2.C=C 3.N=O 4.C≡ N

Correct increasing order for the wavelength of absorbtion in the visible region for the complexes of Co3+ is:

In the following compound, according to the rules of IUPAC nomenclature, the groups designated as A, B, C will be numbered as:

For the following reaction, the product 'B' is:

In which of the following species, the depicted C is sp2 hybridized?

Which of the following comtains maximum no. of molecules ?1- 1 g of CO2 2- 1 g of N23- 1 g of H24- 1 g of CH4

Which of the following compounds is most basic?

29. What is the small cage like structure present in an ice molecule?Explain it.

The number of species having non-pyramidal shape among the following is _____.(A)SO3(B)NO−3(C)PCl3(D)CO2−3

An isotone of 8636Kr is _________.

6.If compound MX4 has mew=0 then most probable geometry is •trigonal bipyramidal •square bipyramidal •tetrahedral

80 What is secondary alcohol.

Why are aqueous solutions of an ionic compounds able to conduct electricity? [1 MARK]

A copper wire of cross- sectional area 0.01 cm2 is under a tension of 20 N. Find the decrease in the cross-sectional area. Young modulus of copper = 1.11×Nm−2 and Poisson ratio = 0.32 \)

At high temperature, the following equilibrium exists in a mixture of carbon, oxygen and their compound:C(s)+O2(g)⇌CO2(g) Keq1=10−22C(s)+O2(g)⇌2CO(g) Keq2=10−3C(s)+CO2(g)⇌2CO(g) Keq3=X2CO(s)+O2(g)⇌2CO2(g) Keq4=Y What is the value of XY?