46295 + Interview Questions in Chemistry

1.	At 90degree celsius ,the pH of 0.001M KOH solution will be1.32.113.54.9
Answer» At 90degree celsius ,the pH of 0.001M KOH solution will be 1.3 2.11 3.5 4.9

Discussion

2.	what is the mass of the precipitate formed when 50ml of 16.9% (w/v) solution of AgNO_{3 }is mixed with 50ml of 5.8%(w/v) NaCl solution
Answer» what is the mass of the precipitate formed when 50ml of 16.9% (w/v) solution of AgNO_{3 }is mixed with 50ml of 5.8%(w/v) NaCl solution

Discussion

3.	joules thomsons effect
Answer» joules thomsons effect

Discussion

4.	Which of the following is true about the value of refractive index of quartz glass ? (a) Same in all directions (b) Different in different directions (c) Cannot be measured (d) Always zero
Answer» Which of the following is true about the value of refractive index of quartz glass ? (a) Same in all directions (b) Different in different directions (c) Cannot be measured (d) Always zero

4.

Which of the following is true about the value of refractive index of quartz glass ? (a) Same in all directions (b) Different in different directions (c) Cannot be measured (d) Always zero

Answer»

Which of the following is true about the value of refractive index of quartz glass ?

(a) Same in all directions (b) Different in different directions

(c) Cannot be measured (d) Always zero

Discussion

5.	Whatis the maximum concentration of equimolar solutions of ferroussulphate and sodium sulphide so that when mixed in equal volumes,there is no precipitation of iron sulphide? (For iron sulphide, Ksp= 6.3 × 10–18).
Answer» What is the maximum concentration of equimolar solutions of ferrous sulphate and sodium sulphide so that when mixed in equal volumes, there is no precipitation of iron sulphide? (For iron sulphide, K_sp = 6.3 × 10^–18).

Discussion

6.	How many correct statement regarding the given compounds1. I is more acidic than II2. I is less acidic than II3. III is less acidic than IV4. III is more acidic than IV
Answer» How many correct statement regarding the given compounds 1. $I$ is more acidic than $I I$ 2. $I$ is less acidic than $I I$ 3. $I I I$ is less acidic than $I V$ 4. $I I I$ is more acidic than $I V$

Discussion

7.	Why is 22400ml of O2 -> 32g?
Answer» Why is 22400ml of O2 -> 32g?

Discussion

8.	why in benzene molecule hybridisation at all carbon atoms is not same?
Answer» why in benzene molecule hybridisation at all carbon atoms is not same?

Discussion

9.	Which of the given sequences has/have correct final product?
Answer» Which of the given sequences has/have correct final product?

Discussion

10.	what is the suffix used for complex [Cr(NO2)(NH3)5][ZnCl4]
Answer» what is the suffix used for complex [Cr(NO2)(NH3)5][ZnCl4]

Discussion

11.	Hoffmann bromamide degradation of benzamide gives product A, which upon heating with CHCl3 and NaOH gives product B. The structures of A and B are:
Answer» Hoffmann bromamide degradation of benzamide gives product A, which upon heating with $C H C l_{3}$ and $N a O H$ gives product B. The structures of A and B are:

Discussion

12.	Arrange the letters in order and find the French words.
Answer» Arrange the letters in order and find the French words.

Discussion

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

Discussion

14.	The molar volume of liquid benzene (density =0.877 g/mL) increases by a factor of 2750 as it vapourises at 20∘C and that of liquid toluene (density =0.867 g/mL) increases by a factor of 7720 at 20∘C. A solution of benzene and toluene at 20∘C has a vapour pressure of 46.0 torr. Find the mole fraction of benzene in the vapour above the solution.
Answer» The molar volume of liquid benzene (density $= 0.877 g / m L$ ) increases by a factor of $2750$ as it vapourises at $20^{\circ} C$ and that of liquid toluene (density $= 0.867 g / m L$ ) increases by a factor of $7720$ at $20^{\circ} C$ . A solution of benzene and toluene at $20^{\circ} C$ has a vapour pressure of $46.0 t o r r$ . Find the mole fraction of benzene in the vapour above the solution.

Discussion

15.	SO2 is oxidized according to the following equation 2SO2 +O2 in equilibrium with 2SO3. IF two moles each of the reactants are reacted in a closed vessel and 1/ 3rd of SO2 is converted into the product. Calculate Kp for the reaction if the total equilibrium pressure is 5 atmosphere
Answer» SO2 is oxidized according to the following equation 2SO2 +O2 in equilibrium with 2SO3. IF two moles each of the reactants are reacted in a closed vessel and 1/ 3rd of SO2 is converted into the product. Calculate Kp for the reaction if the total equilibrium pressure is 5 atmosphere

Discussion

16.	In rxn X + Y ----> 2Z 2mole of X, 1 mole of Y, 1mole of Z are placed in 10 litre vessel. Allowed to reach equilibrium. If final concentration of Z is 0.2M, then Kc for given rxn is 1)1.60 2)80/3 3)16/3 4)45
Answer» In rxn X + Y ----> 2Z 2mole of X, 1 mole of Y, 1mole of Z are placed in 10 litre vessel. Allowed to reach equilibrium. If final concentration of Z is 0.2M, then Kc for given rxn is 1)1.60 2)80/3 3)16/3 4)45

Discussion

17.	Completethe following chemical reactions.(i) (ii) (iii) (iv) (v) Classify the above into(a) hydrolysis, (b) redox and (c) hydration reactions.
Answer» Complete the following chemical reactions. (i) (ii) (iii) (iv) (v) Classify the above into (a) hydrolysis, (b) redox and (c) hydration reactions.

17.

Completethe following chemical reactions.(i) (ii) (iii) (iv) (v) Classify the above into(a) hydrolysis, (b) redox and (c) hydration reactions.

Answer»

Complete
the following chemical reactions.

(i)

(ii)

(iii)

(iv)

(v)

Classify the above into
(a) hydrolysis, (b) redox and (c) hydration reactions.

Discussion

18.	Two isolated masses are placed 2m apart. The ratio of the masses is 4. At what distance between the two masses 3rd mass should be placed so that it experiences no acceleration due to gravity.
Answer» Two isolated masses are placed 2m apart. The ratio of the masses is 4. At what distance between the two masses 3rd mass should be placed so that it experiences no acceleration due to gravity.

Discussion

19.	Why when two objects more due to their mutual attraction, they collide at the centre of mass??
Answer» Why when two objects more due to their mutual attraction, they collide at the centre of mass??

Discussion

20.	A uniform disc of mass 0.2 kg and radius 2 root 2 centimetre is suspended through a small hole made in the disc the distance of the hole from the centre for it to have minimum time period is
Answer» A uniform disc of mass 0.2 kg and radius 2 root 2 centimetre is suspended through a small hole made in the disc the distance of the hole from the centre for it to have minimum time period is

Discussion

21.	At 25oC for the given cell, Ag(s)\|Ag+(aq, x M)\|\|Ag+(aq, 1.0 M)\|Ag(s)Ecell=0.26 VWhat will be the value of log10(x) ?Here x is the concentration of electrolyte
Answer» At $25^{o} C$ for the given cell, $A g (s) \| A g^{+} (a q, x M) \| \| A g^{+} (a q, 1.0 M) \| A g (s)$ $E_{c e l l} = 0.26 V$ What will be the value of ${log}_{10} (x)$ ? Here $x$ is the concentration of electrolyte

Discussion

22.	'A' is a hydrocarbon of the M.F C4H6 and its ozonalysis product is Dimethyl glyoxal. YNa/NH3(i)−−−−−−−→Alindlar′scatalyst−−−−−−−−−−→x ;Which of the following is not true regarding X and Y
Answer» 'A' is a hydrocarbon of the M.F C₄H₆ and its ozonalysis product is Dimethyl glyoxal. $Y N a / N H_{3} (i) - ------ \to A l i n d l a r^{'} s c a t a l y s t - --------- \to x$ ;Which of the following is not true regarding X and Y

22.

'A' is a hydrocarbon of the M.F C4H6 and its ozonalysis product is Dimethyl glyoxal. YNa/NH3(i)−−−−−−−→Alindlar′scatalyst−−−−−−−−−−→x ;Which of the following is not true regarding X and Y

Answer»

'A' is a hydrocarbon of the M.F C₄H₆ and its ozonalysis product is Dimethyl glyoxal.

$Y N a / N H_{3} (i) - ------ \to A l i n d l a r^{'} s c a t a l y s t - --------- \to x$ ;Which of the following is not true regarding X and Y

Discussion

23.	ntwhen a metal is burnt, its mass increases by 50%. the equivalent weight of metal is?n
Answer» ntwhen a metal is burnt, its mass increases by 50%. the equivalent weight of metal is?n

Discussion

24.	Which of the following molecules/ions does not contain unpaired electrons?
Answer» Which of the following molecules/ions does not contain unpaired electrons?

Discussion

25.	A ball of mass 1 kg is dropped from 20 m height on ground and it rebounds to height 5 m. Findmagnitude of change in momentum during its collision with the ground. (Take g = 10 m/s2)
Answer» A ball of mass 1 kg is dropped from 20 m height on ground and it rebounds to height 5 m. Findmagnitude of change in momentum during its collision with the ground. (Take g = 10 m/s2)

Discussion

26.	Ques-At what wavelength will the maximum energy will be in the distribution emanating from the pan placed on the stove at 300 degree Celsius while cooking ?
Answer» Ques-At what wavelength will the maximum energy will be in the distribution emanating from the pan placed on the stove at 300 degree Celsius while cooking ?

Discussion

27.	In which of the following molecules, central atom is sp3 hybridised?
Answer» In which of the following molecules, central atom is $s p^{3}$ hybridised?

Discussion

28.	8 g NaOH is dissolved in water to make one litre solution, its molarity is
Answer» 8 g NaOH is dissolved in water to make one litre solution, its molarity is

Discussion

29.	Why in cubic close packing no of tertrahedral void is 8 while no of octahedral void is 4 ?
Answer» Why in cubic close packing no of tertrahedral void is 8 while no of octahedral void is 4 ?

Discussion

30.	69. Calculate the energy required to convert all the atoms of M (atomic number: 12) to m2+ ions present in 12mg of metal vapours. First and second ionization of M are 737.77 and 1450.73 kJ mol-1 respectively.
Answer» 69. Calculate the energy required to convert all the atoms of M (atomic number: 12) to m2+ ions present in 12mg of metal vapours. First and second ionization of M are 737.77 and 1450.73 kJ mol-1 respectively.

Discussion

31.	Which of the following is true for osmosis?
Answer» Which of the following is true for osmosis?

Discussion

32.	23. The following reactions carried in opening vessel. The reactions for which H=U is 1.PCl5(g)PCl3(g)+Cl2(g) 2.2CO(g)+O2(g)2CO2(g) 3.N2(g)+3H2(g)2NH3(g) 4.H2(g)+I2(g)2HI(g)
Answer» 23. The following reactions carried in opening vessel. The reactions for which H=U is 1.PCl5(g)PCl3(g)+Cl2(g) 2.2CO(g)+O2(g)2CO2(g) 3.N2(g)+3H2(g)2NH3(g) 4.H2(g)+I2(g)2HI(g)

Discussion

33.	0.1 mol of KMnO4 in acidic medium can oxidise
Answer» 0.1 mol of $K M n O_{4}$ in acidic medium can oxidise

Discussion

34.	In which of the following first member has higher boiling point than second one?? 1) H2o, H2s 2)XE,Ne 3)ICl,CL2 4)c2h5oh,ch3oh
Answer» In which of the following first member has higher boiling point than second one?? 1) H2o, H2s 2)XE,Ne 3)ICl,CL2 4)c2h5oh,ch3oh

Discussion

35.	20. What happens when K2Cr2O7 reacts with H2SO4and NaCl
Answer» 20. What happens when K2Cr2O7 reacts with H2SO4and NaCl

Discussion

36.	What effect should resonance of vinyl chloride have on it's dipole moment?iit 1987
Answer» What effect should resonance of vinyl chloride have on it's dipole moment?iit 1987

Discussion

37.	0.1 M solution of KI reacts with excess of H2SO4 and KIO3 solutions acccording to equation 5I−+IO−3+6H+→3I2+3H2O which of the following statement is correct?
Answer» $0.1 M$ solution of KI reacts with excess of $H_{2} S O_{4}$ and $K I O_{3}$ solutions acccording to equation $5 I^{-} + I O_{3}^{-} + 6 H^{+} \to 3 I_{2} + 3 H_{2} O$ which of the following statement is correct?

Discussion

38.	C2h6+o2 gives co2+h2o Total number of o2 molecules used during complete combustion of 1 mole of c2h6(g) is ?
Answer» C2h6+o2 gives co2+h2o Total number of o2 molecules used during complete combustion of 1 mole of c2h6(g) is ?

Discussion

39.	If the radius of the 3rd Bohr orbit of hydrogen is r, then the wavelength of an electron in the 6th orbit of a hydrogen atom is equal to
Answer» If the radius of the $3^{r d}$ Bohr orbit of hydrogen is r, then the wavelength of an electron in the $6^{t h}$ orbit of a hydrogen atom is equal to

Discussion

40.	A dimentionally consistent relation for the volume V of a liquid of coefficient of viscosity 'eta' flowing per second through a tube of radius r and length l and having a pressure difference P across its ends,is??
Answer» A dimentionally consistent relation for the volume V of a liquid of coefficient of viscosity 'eta' flowing per second through a tube of radius r and length l and having a pressure difference P across its ends,is??

Discussion

41.	The dimensional formula for molar thermal capacity is same that of- (i)gas constant (ii)stefan's constant (iii)Boltzmann constant (iv)specific heat give brief explanation
Answer» The dimensional formula for molar thermal capacity is same that of- (i)gas constant (ii)stefan's constant (iii)Boltzmann constant (iv)specific heat give brief explanation

Discussion

42.	what will be the effect on bond order when CO is converted into CO+?why an electron will be removed from antibonding orbital.
Answer» what will be the effect on bond order when CO is converted into CO+?why an electron will be removed from antibonding orbital.

Discussion

43.	how temperature of a bulk system is related to the average kinetic energy of the molecules of the syste
Answer» how temperature of a bulk system is related to the average kinetic energy of the molecules of the syste

Discussion

44.	ionization energy 1 of he atom and ip second of he atom are same or no
Answer» ionization energy 1 of he atom and ip second of he atom are same or no

Discussion

45.	what is the graph of Sn1 reaction and Sn2 reaction?
Answer» what is the graph of Sn1 reaction and Sn2 reaction?

Discussion

46.	88.The ABAB close packing and ABC ABC close packing are respectively called as (1) hexagonal close packing(hcp) and cubic close packing (ccp) (2) ccp and hcp (3) body centred cubic(bcc) packing and hexagonal close packing (hcp) (4) hcp and bcc
Answer» 88.The ABAB close packing and ABC ABC close packing are respectively called as (1) hexagonal close packing(hcp) and cubic close packing (ccp) (2) ccp and hcp (3) body centred cubic(bcc) packing and hexagonal close packing (hcp) (4) hcp and bcc

Discussion

47.	Alcoholic KOH will favour SN2 or Elimination reaction
Answer» Alcoholic KOH will favour SN2 or Elimination reaction

Discussion

48.	Calculate the emf of the following cell at 25∘C.Ag(s)\|AgNO3(0.01 mol kg−1)\|\|AgNO3(0.05 mol kg−1)\|Ag(s)
Answer» Calculate the emf of the following cell at $25^{\circ} C$ . $A g (s) \| A g N O_{3} (0.01 {mol kg}^{- 1}) \| \| A g N O_{3} (0.05 {mol kg}^{- 1}) \| A g (s)$

Discussion

49.	The following equilibrium constants are given:N2(g) + H2(g)⇌2NH3(g); K1N2(g) + O2(g)⇌2NO(g); K2H2(g) + 12O2(g)⇌H2O(g); K3The equilibrium constant for the oxidation of the NH3 by oxygen to give NO is:2NH3(g) + 52O2(g)⇌2NO(g) + 3H2O(g)
Answer» The following equilibrium constants are given: $N_{2} (g) + H_{2} (g) ⇌ 2 N H_{3} (g); K_{1}$ $N_{2} (g) + O_{2} (g) ⇌ 2 N O (g); K_{2}$ $H_{2} (g) + \frac{1}{2} O_{2} (g) ⇌ H_{2} O (g); K_{3}$ The equilibrium constant for the oxidation of the $N H_{3}$ by oxygen to give $N O$ is: $2 N H_{3} (g) + \frac{5}{2} O_{2} (g) ⇌ 2 N O (g) + 3 H_{2} O (g)$

Discussion

50.	How many nodal planes are present in the highest occupied molecular orbital(HOMO) of N2? A- 0 B- 1 C- 2 D- 3
Answer» How many nodal planes are present in the highest occupied molecular orbital(HOMO) of N2? A- 0 B- 1 C- 2 D- 3

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

At 90degree celsius ,the pH of 0.001M KOH solution will be1.32.113.54.9

what is the mass of the precipitate formed when 50ml of 16.9% (w/v) solution of AgNO_{3 }is mixed with 50ml of 5.8%(w/v) NaCl solution

joules thomsons effect

Which of the following is true about the value of refractive index of quartz glass ? (a) Same in all directions (b) Different in different directions (c) Cannot be measured (d) Always zero

Whatis the maximum concentration of equimolar solutions of ferroussulphate and sodium sulphide so that when mixed in equal volumes,there is no precipitation of iron sulphide? (For iron sulphide, Ksp= 6.3 × 10–18).

How many correct statement regarding the given compounds1. I is more acidic than II2. I is less acidic than II3. III is less acidic than IV4. III is more acidic than IV

Why is 22400ml of O2 -> 32g?

why in benzene molecule hybridisation at all carbon atoms is not same?

Which of the given sequences has/have correct final product?

what is the suffix used for complex [Cr(NO2)(NH3)5][ZnCl4]

Hoffmann bromamide degradation of benzamide gives product A, which upon heating with CHCl3 and NaOH gives product B. The structures of A and B are:

Arrange the letters in order and find the French words.

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

SO2 is oxidized according to the following equation 2SO2 +O2 in equilibrium with 2SO3. IF two moles each of the reactants are reacted in a closed vessel and 1/ 3rd of SO2 is converted into the product. Calculate Kp for the reaction if the total equilibrium pressure is 5 atmosphere

In rxn X + Y ----> 2Z 2mole of X, 1 mole of Y, 1mole of Z are placed in 10 litre vessel. Allowed to reach equilibrium. If final concentration of Z is 0.2M, then Kc for given rxn is 1)1.60 2)80/3 3)16/3 4)45

Completethe following chemical reactions.(i) (ii) (iii) (iv) (v) Classify the above into(a) hydrolysis, (b) redox and (c) hydration reactions.

Two isolated masses are placed 2m apart. The ratio of the masses is 4. At what distance between the two masses 3rd mass should be placed so that it experiences no acceleration due to gravity.

Why when two objects more due to their mutual attraction, they collide at the centre of mass??

A uniform disc of mass 0.2 kg and radius 2 root 2 centimetre is suspended through a small hole made in the disc the distance of the hole from the centre for it to have minimum time period is

At 25oC for the given cell, Ag(s)|Ag+(aq, x M)||Ag+(aq, 1.0 M)|Ag(s)Ecell=0.26 VWhat will be the value of log10(x) ?Here x is the concentration of electrolyte

'A' is a hydrocarbon of the M.F C4H6 and its ozonalysis product is Dimethyl glyoxal. YNa/NH3(i)−−−−−−−→Alindlar′scatalyst−−−−−−−−−−→x ;Which of the following is not true regarding X and Y

ntwhen a metal is burnt, its mass increases by 50%. the equivalent weight of metal is?n

Which of the following molecules/ions does not contain unpaired electrons?

A ball of mass 1 kg is dropped from 20 m height on ground and it rebounds to height 5 m. Findmagnitude of change in momentum during its collision with the ground. (Take g = 10 m/s2)

Ques-At what wavelength will the maximum energy will be in the distribution emanating from the pan placed on the stove at 300 degree Celsius while cooking ?

In which of the following molecules, central atom is sp3 hybridised?

8 g NaOH is dissolved in water to make one litre solution, its molarity is

Why in cubic close packing no of tertrahedral void is 8 while no of octahedral void is 4 ?

69. Calculate the energy required to convert all the atoms of M (atomic number: 12) to m2+ ions present in 12mg of metal vapours. First and second ionization of M are 737.77 and 1450.73 kJ mol-1 respectively.

Which of the following is true for osmosis?

23. The following reactions carried in opening vessel. The reactions for which H=U is 1.PCl5(g)PCl3(g)+Cl2(g) 2.2CO(g)+O2(g)2CO2(g) 3.N2(g)+3H2(g)2NH3(g) 4.H2(g)+I2(g)2HI(g)

0.1 mol of KMnO4 in acidic medium can oxidise

In which of the following first member has higher boiling point than second one?? 1) H2o, H2s 2)XE,Ne 3)ICl,CL2 4)c2h5oh,ch3oh

20. What happens when K2Cr2O7 reacts with H2SO4and NaCl

What effect should resonance of vinyl chloride have on it's dipole moment?iit 1987

0.1 M solution of KI reacts with excess of H2SO4 and KIO3 solutions acccording to equation 5I−+IO−3+6H+→3I2+3H2O which of the following statement is correct?

C2h6+o2 gives co2+h2o Total number of o2 molecules used during complete combustion of 1 mole of c2h6(g) is ?

If the radius of the 3rd Bohr orbit of hydrogen is r, then the wavelength of an electron in the 6th orbit of a hydrogen atom is equal to

A dimentionally consistent relation for the volume V of a liquid of coefficient of viscosity 'eta' flowing per second through a tube of radius r and length l and having a pressure difference P across its ends,is??

The dimensional formula for molar thermal capacity is same that of- (i)gas constant (ii)stefan's constant (iii)Boltzmann constant (iv)specific heat give brief explanation

what will be the effect on bond order when CO is converted into CO+?why an electron will be removed from antibonding orbital.

how temperature of a bulk system is related to the average kinetic energy of the molecules of the syste

ionization energy 1 of he atom and ip second of he atom are same or no

what is the graph of Sn1 reaction and Sn2 reaction?

88.The ABAB close packing and ABC ABC close packing are respectively called as (1) hexagonal close packing(hcp) and cubic close packing (ccp) (2) ccp and hcp (3) body centred cubic(bcc) packing and hexagonal close packing (hcp) (4) hcp and bcc

Alcoholic KOH will favour SN2 or Elimination reaction

Calculate the emf of the following cell at 25∘C.Ag(s)|AgNO3(0.01 mol kg−1)||AgNO3(0.05 mol kg−1)|Ag(s)

The following equilibrium constants are given:N2(g) + H2(g)⇌2NH3(g); K1N2(g) + O2(g)⇌2NO(g); K2H2(g) + 12O2(g)⇌H2O(g); K3The equilibrium constant for the oxidation of the NH3​ by oxygen to give NO is:2NH3(g) + 52O2(g)⇌2NO(g) + 3H2O(g)

How many nodal planes are present in the highest occupied molecular orbital(HOMO) of N2? A- 0 B- 1 C- 2 D- 3

The following equilibrium constants are given:N2(g) + H2(g)⇌2NH3(g); K1N2(g) + O2(g)⇌2NO(g); K2H2(g) + 12O2(g)⇌H2O(g); K3The equilibrium constant for the oxidation of the NH3 by oxygen to give NO is:2NH3(g) + 52O2(g)⇌2NO(g) + 3H2O(g)