46295 + Interview Questions in Chemistry

1.	Predict the product formed in the following reaction:
Answer» Predict the product formed in the following reaction:

Discussion

2.	CH3COOC2H5 and C2H5COOCH3 exhibit?
Answer» $C H_{3} C O O C_{2} H_{5} a n d C_{2} H_{5} C O O C H_{3}$ exhibit?

Discussion

3.	Q) CH2 = CH - CH2 - Cl is treated with alc.KOH . We get A , B ,C . Identify A , B , C?
Answer» Q) CH2 = CH - CH2 - Cl is treated with alc.KOH . We get A , B ,C . Identify A , B , C?

Discussion

4.	The uncertainty in the velocity of a cricket ball of mass 100 g, when uncertainty in its position is of the order of 1 oA, would be :(Given : h=6.626×10−34 J-s, π=3.14, 6.6263.14=2.11 )
Answer» The uncertainty in the velocity of a cricket ball of mass $100 g$ , when uncertainty in its position is of the order of $1 o A$ , would be : (Given : $h = 6.626 \times 10^{- 34} J-s, π = 3.14, \frac{6.626}{3.14} = 2.11$ )

Discussion

5.	Identify X; H3C−CH3\|C=OCH3MgI−−−−−→Dry etherAH2O−−→X
Answer» Identify X; $H_{3} C - C H_{3} \| C = O C H_{3} M g I - ---- \to D r y e t h e r A H_{2} O - - \to X$

Discussion

6.	How scientist found the distance from moon to sun
Answer» How scientist found the distance from moon to sun

Discussion

7.	6. Ehtyl amine and aniline can be distinguished by:- 1) Br2/H20 2) CHCl3/KOH 3) C6H5SO2Cl 4) all
Answer» 6. Ehtyl amine and aniline can be distinguished by:- 1) Br2/H20 2) CHCl3/KOH 3) C6H5SO2Cl 4) all

Discussion

8.	The readings of a bath of celsius and fahrenheit thermometers are in the ratio 2:5 .The temperature of bath is a)-26.6 b)40 c)45.71 d)26.66
Answer» The readings of a bath of celsius and fahrenheit thermometers are in the ratio 2:5 .The temperature of bath is a)-26.6 b)40 c)45.71 d)26.66

Discussion

9.	Consider the cascade interconnection of three causal LTI system shown below;and the overall impulse response is h(n) where h2(n)=u(n)−u(n−2)y1(n) is response of first system for the input. Thenx(n)=δ(n)−δ(n−1).∑∞n=−∞y(n)= ____0
Answer» Consider the cascade interconnection of three causal LTI system shown below; and the overall impulse response is $h (n) w h e r e h_{2} (n) = u (n) - u (n - 2)$ $y_{1} (n)$ is response of first system for the input. Then $x (n) = δ (n) - δ (n - 1) .$ $\sum_{n = - \infty}^{\infty} y (n) =$ ____ 0

Discussion

10.	A positronium consists of an electron and a positron revolving about their common centre of mass. Calculate the separation between the electron and positron in their first excited state.
Answer» A positronium consists of an electron and a positron revolving about their common centre of mass. Calculate the separation between the electron and positron in their first excited state.

Discussion

11.	If there are no heat losses, the heat released by the condensation of x gm of steam at 100∘C into water at 100∘C can be used to convert y gm of ice at 0°C into water at 100∘C. Then the ratio y : x is nearly
Answer» If there are no heat losses, the heat released by the condensation of x gm of steam at $100^{\circ} C$ into water at $100^{\circ} C$ can be used to convert y gm of ice at 0°C into water at $100^{\circ} C$ . Then the ratio y : x is nearly

Discussion

12.	Calculate the electronegativity of chlorine from the given data: bond energy of Cl−F bond (61 kcal mol−1), F−F(38 kcal mol−1) and Cl−Cl bond (58 kcal mol−1) and electronegativity of fluorine is 4.0.
Answer» Calculate the electronegativity of chlorine from the given data: bond energy of $C l - F$ bond $(61 k c a l m o l^{- 1})$ , $F - F$ $(38 k c a l m o l^{- 1})$ and $C l - C l$ bond $(58 k c a l m o l^{- 1})$ and electronegativity of fluorine is $4.0$ .

Discussion

13.	In the aluminothermic process, the reduced metal is generally in the __ state.
Answer» In the aluminothermic process, the reduced metal is generally in the __ state.

Discussion

14.	Which of the following represents the correct order of increasing electron gain enthalpy with negative sign for the elements O, S, F and Cl?
Answer» Which of the following represents the correct order of increasing electron gain enthalpy with negative sign for the elements O, S, F and Cl?

Discussion

15.	What will be the packing fraction in the following case? The sphere is touching the sides of the cube exactly.
Answer» What will be the packing fraction in the following case? The sphere is touching the sides of the cube exactly.

15.

What will be the packing fraction in the following case? The sphere is touching the sides of the cube exactly.

Answer»

What will be the packing fraction in the following case?

The sphere is touching the sides of the cube exactly.

Discussion

16.	How fcc consists of 7/2 atom (i saw in byju solutions)
Answer» How fcc consists of 7/2 atom (i saw in byju solutions)

Discussion

17.	Which of the following exhibits +R (resonance) effect?
Answer» Which of the following exhibits +R (resonance) effect?

Discussion

18.	The number of chiral compounds obtained on the monochlorination of 2-methylbutane is
Answer» The number of chiral compounds obtained on the monochlorination of 2-methylbutane is

Discussion

19.	The compound (D) is :
Answer» The compound (D) is :

Discussion

20.	Mg+(NO3)−→ Mg+(SO4)2−→ Mg+(PO4)3−→
Answer» $M g + (N O_{3})^{-} \to$ $M g + (S O_{4})^{2 -} \to$ $M g + (P O_{4})^{3 -} \to$

Discussion

21.	A source at a temperautre of 500K provides 1000kJ of heat. THe temprature of environment is 27oC. The maximum useful work (in kJ) that can eb obtained from the heat source is400
Answer» A source at a temperautre of $500 K$ provides $1000 k J$ of heat. THe temprature of environment is $27^{o} C$ . The maximum useful work (in $k J$ ) that can eb obtained from the heat source is 400

Discussion

22.	ntA certain quantity of electricity is passed through an aqueous solutions of AgNO3 and CuSO4 connected in series. IF the mass of Ag deposited is 1.08 g , the mass of Cu deposited will be ?n
Answer» ntA certain quantity of electricity is passed through an aqueous solutions of AgNO3 and CuSO4 connected in series. IF the mass of Ag deposited is 1.08 g , the mass of Cu deposited will be ?n

Discussion

23.	How to find the efficiency of a cell/battery ?
Answer» How to find the efficiency of a cell/battery ?

Discussion

24.	30.in a thermodynamic process on an ideal diatomic gas, work done by gas is n times the heat supplied (n
Answer» 30.in a thermodynamic process on an ideal diatomic gas, work done by gas is n times the heat supplied (n<1) find the molar heat capacity of gas for the process

Discussion

25.	Which among the following is most stabilized carbocation
Answer» Which among the following is most stabilized carbocation

Discussion

26.	How to find cp and cv for monoatomic gas,diatomic gas and triatomic gas
Answer» How to find cp and cv for monoatomic gas,diatomic gas and triatomic gas

Discussion

27.	57 The number of moles of mno4- req to oxdize one more ferrous oxalate in acidic med is
Answer» 57 The number of moles of mno4- req to oxdize one more ferrous oxalate in acidic med is

Discussion

28.	If E1,E2 and E3 represents the kinetic energy of an electron, an alpha particle and a proton each having same de-Broglie’s wavelength then
Answer» If $E_{1}, E_{2} a n d E_{3}$ represents the kinetic energy of an electron, an alpha particle and a proton each having same de-Broglie’s wavelength then

Discussion

29.	Select the option(s) in which rate of SN1 is faster in II than I?
Answer» Select the option(s) in which rate of SN1 is faster in II than I?

Discussion

30.	1. Write the equation of the reaction of hydrogen iodide with Benzyl ethyl ether.
Answer» 1. Write the equation of the reaction of hydrogen iodide with Benzyl ethyl ether.

Discussion

31.	Select which of the option is incorrect using following diagrams:(Take z axis as inter-nuclear axis)
Answer» Select which of the option is incorrect using following diagrams: (Take z axis as inter-nuclear axis)

31.

Select which of the option is incorrect using following diagrams:(Take z axis as inter-nuclear axis)

Answer»

Select which of the option is incorrect using following diagrams:

(Take z axis as inter-nuclear axis)

Discussion

32.	Metaphosphoric acid has the formula:
Answer» Metaphosphoric acid has the formula:

Discussion

33.	Complete the following reactions: (i) C2H4 + O2 → (ii) 4Al + 3 O2 →
Answer» Complete the following reactions: (i) C₂H₄ + O₂ → (ii) 4Al + 3 O₂ →

33.

Complete the following reactions: (i) C2H4 + O2 → (ii) 4Al + 3 O2 →

Answer»

Complete
the following reactions:

(i)
C₂H₄
+ O₂ →

(ii)
4Al + 3 O₂
→

Discussion

34.	what are odd electrons
Answer» what are odd electrons

Discussion

35.	The mass of potassium dichromate (294 g/mol)required to oxidise 750 cm3 of 0.6 M Mohr'ssalt solution is:-(1) 0.49 g(3) 22.05 g59.(2) 0.45 g(4) 2.2 g
Answer» The mass of potassium dichromate (294 g/mol)required to oxidise 750 cm3 of 0.6 M Mohr'ssalt solution is:-(1) 0.49 g(3) 22.05 g59.(2) 0.45 g(4) 2.2 g

Discussion

36.	Does colloids (heterogeneous mixture) diffuses.And what is tyndall effect and Brownian moment? What is the size of colloid particle
Answer» Does colloids (heterogeneous mixture) diffuses.And what is tyndall effect and Brownian moment? What is the size of colloid particle

Discussion

37.	Compound C (major product) will be:
Answer» Compound C (major product) will be:

Discussion

38.	What is the acidity order of oxoacids of sulphur
Answer» What is the acidity order of oxoacids of sulphur

Discussion

39.	The following reaction has been proposed for the reaction of NO with Br2 to form NOBr
Answer» The following reaction has been proposed for the reaction of NO with Br2 to form NOBr

Discussion

40.	Define reaction with NBS in detail
Answer» Define reaction with NBS in detail

Discussion

41.	From which of the following species, it is easiest to remove one electron?
Answer» From which of the following species, it is easiest to remove one electron?

Discussion

42.	Cac2\xrightarrow{H20}A\xrightarrow{cu2cl2}B\xrightarrow{1.eqv.Hcl 2.mg /ether3. co2/h20/h+}C in above reaction product C i
Answer» Cac2\xrightarrow{H20}A\xrightarrow{cu2cl2}B\xrightarrow{1.eqv.Hcl 2.mg /ether3. co2/h20/h+}C in above reaction product C i

Discussion

43.	The pressure exerted by a non- reactive gaseous mixture of 6.4 g of methane and 8.8 g of carbon dioxide in a 10 L vessel at 27∘C is ____kPa(Round off to the Nearest Integer).[Assume gases are ideal, R=8.314 J mol−1 K−1 Atomic masses : C=12.0 u, H:1.0 u, O:16.0 u]
Answer» The pressure exerted by a non- reactive gaseous mixture of $6.4 g$ of methane and $8.8 g$ of carbon dioxide in a $10 L$ vessel at $27^{\circ}$ C is ____ $k P a$ (Round off to the Nearest Integer). [Assume gases are ideal, $R = 8.314 J m o l^{- 1} K^{- 1}$ Atomic masses : $C = 12.0 u, H : 1.0 u, O : 16.0 u$ ]

Discussion

44.

Match the following columnPolymerMonomer(i) Buna−S(P) Styrene(ii) ethylene glycol(Q) terylene(iii) Elastomer(R) chloroprene

Answer»

Match the following column

Polymer	Monomer
(i) Buna−S	(P) Styrene
(ii) ethylene glycol	(Q) terylene
(iii) Elastomer	(R) chloroprene

Discussion

45.	70 The pH of 0.005M codeine (C18H21NO3) solution is 9.95. Its pkb value is A 8.92 B 5.81 C 3.76 D 4.29
Answer» 70 The pH of 0.005M codeine (C18H21NO3) solution is 9.95. Its pkb value is A 8.92 B 5.81 C 3.76 D 4.29

Discussion

46.	MATCH THE FOLLOWING – 1
Answer» MATCH THE FOLLOWING – 1

46.

MATCH THE FOLLOWING – 1

Answer»

MATCH THE FOLLOWING – 1

Discussion

47.	In the following questions a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the coreect answer out of the following choices. (a) Both assertion and reason are true and reason is the coreect explanation of assertion. (b) Both assertion and reason are true but reason is not the correct explanation of assertion. (c) Assertion is true but reason is false. (d) Assertion is false but reason is true. (e) Assertion and reason both are wrong. Assertion (A) Zirconium can be purified by van Arkel method. Reason (R)ZrI4 is volatile and decomposes at 1800K.
Answer» In the following questions a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the coreect answer out of the following choices. (a) Both assertion and reason are true and reason is the coreect explanation of assertion. (b) Both assertion and reason are true but reason is not the correct explanation of assertion. (c) Assertion is true but reason is false. (d) Assertion is false but reason is true. (e) Assertion and reason both are wrong. Assertion (A) Zirconium can be purified by van Arkel method. Reason $(R) Z r I_{4}$ is volatile and decomposes at 1800K.

Discussion

48.

The optical rotation of cane sugar in 0.5 N lactic acid at 25oC at various time intervals are given below Time (min)0143511360∞Rotation (o)34.5031.1013.98-10.77Predict the rate constant expression for the given first order reaction. Here, r0 is the optical rotation at time = 0rt is the optical rotation at time = tr∞ is the optical rotation at time = ∞

Answer»

The optical rotation of cane sugar in $0.5 N$ lactic acid at $25^{o} C$ at various time intervals are given below

Time (min)	0	1435	11360	$\infty$
Rotation ( $^{o}$ )	34.50	31.10	13.98	-10.77

Predict the rate constant expression for the given first order reaction.

Here,

r_{0}

is the optical rotation at time = 0

r_{t}

is the optical rotation at time = t

r_{\infty}

is the optical rotation at time =

\infty

Discussion

49.	The resistance of 0.01 N solution of an electrolytewas found to be 210 ohm at 298 K using aconductivity cell of cell constant 0.66 cm1. Theequivalent conductance of solution is :-(1) 314.28 mho cm eq(2) 3.14 mho cm2 eq(3) 314.28 mho cm2 eq(4) 3.14 mho cm2 eq
Answer» The resistance of 0.01 N solution of an electrolytewas found to be 210 ohm at 298 K using aconductivity cell of cell constant 0.66 cm1. Theequivalent conductance of solution is :-(1) 314.28 mho cm eq(2) 3.14 mho cm2 eq(3) 314.28 mho cm2 eq(4) 3.14 mho cm2 eq

Discussion

50.	Derive the equation of henry's law
Answer» Derive the equation of henry's law

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Predict the product formed in the following reaction:

CH3COOC2H5 and C2H5COOCH3 exhibit?

Q) CH2 = CH - CH2 - Cl is treated with alc.KOH . We get A , B ,C . Identify A , B , C?

The uncertainty in the velocity of a cricket ball of mass 100 g, when uncertainty in its position is of the order of 1 oA, would be :(Given : h=6.626×10−34 J-s, π=3.14, 6.6263.14=2.11 )

Identify X; H3C−CH3|C=OCH3MgI−−−−−→Dry etherAH2O−−→X

How scientist found the distance from moon to sun

6. Ehtyl amine and aniline can be distinguished by:- 1) Br2/H20 2) CHCl3/KOH 3) C6H5SO2Cl 4) all

The readings of a bath of celsius and fahrenheit thermometers are in the ratio 2:5 .The temperature of bath is a)-26.6 b)40 c)45.71 d)26.66

Consider the cascade interconnection of three causal LTI system shown below;and the overall impulse response is h(n) where h2(n)=u(n)−u(n−2)y1(n) is response of first system for the input. Thenx(n)=δ(n)−δ(n−1).∑∞n=−∞y(n)= ____0

A positronium consists of an electron and a positron revolving about their common centre of mass. Calculate the separation between the electron and positron in their first excited state.

If there are no heat losses, the heat released by the condensation of x gm of steam at 100∘C into water at 100∘C can be used to convert y gm of ice at 0°C into water at 100∘C. Then the ratio y : x is nearly

Calculate the electronegativity of chlorine from the given data: bond energy of Cl−F bond (61 kcal mol−1), F−F(38 kcal mol−1) and Cl−Cl bond (58 kcal mol−1) and electronegativity of fluorine is 4.0.

In the aluminothermic process, the reduced metal is generally in the __ state.

Which of the following represents the correct order of increasing electron gain enthalpy with negative sign for the elements O, S, F and Cl?

What will be the packing fraction in the following case? The sphere is touching the sides of the cube exactly.

How fcc consists of 7/2 atom (i saw in byju solutions)

Which of the following exhibits +R (resonance) effect?

The number of chiral compounds obtained on the monochlorination of 2-methylbutane is

The compound (D) is :

Mg+(NO3)−→ Mg+(SO4)2−→ Mg+(PO4)3−→

A source at a temperautre of 500K provides 1000kJ of heat. THe temprature of environment is 27oC. The maximum useful work (in kJ) that can eb obtained from the heat source is400

ntA certain quantity of electricity is passed through an aqueous solutions of AgNO3 and CuSO4 connected in series. IF the mass of Ag deposited is 1.08 g , the mass of Cu deposited will be ?n

How to find the efficiency of a cell/battery ?

30.in a thermodynamic process on an ideal diatomic gas, work done by gas is n times the heat supplied (n

Which among the following is most stabilized carbocation

How to find cp and cv for monoatomic gas,diatomic gas and triatomic gas

57 The number of moles of mno4- req to oxdize one more ferrous oxalate in acidic med is

If E1,E2 and E3 represents the kinetic energy of an electron, an alpha particle and a proton each having same de-Broglie’s wavelength then

Select the option(s) in which rate of SN1 is faster in II than I?

1. Write the equation of the reaction of hydrogen iodide with Benzyl ethyl ether.

Select which of the option is incorrect using following diagrams:(Take z axis as inter-nuclear axis)

Metaphosphoric acid has the formula:

Complete the following reactions: (i) C2H4 + O2 → (ii) 4Al + 3 O2 →

what are odd electrons

The mass of potassium dichromate (294 g/mol)required to oxidise 750 cm3 of 0.6 M Mohr'ssalt solution is:-(1) 0.49 g(3) 22.05 g59.(2) 0.45 g(4) 2.2 g

Does colloids (heterogeneous mixture) diffuses.And what is tyndall effect and Brownian moment? What is the size of colloid particle

Compound C (major product) will be:

What is the acidity order of oxoacids of sulphur

The following reaction has been proposed for the reaction of NO with Br2 to form NOBr

Define reaction with NBS in detail

From which of the following species, it is easiest to remove one electron?

Cac2\xrightarrow{H20}A\xrightarrow{cu2cl2}B\xrightarrow{1.eqv.Hcl 2.mg /ether3. co2/h20/h+}C in above reaction product C i

The pressure exerted by a non- reactive gaseous mixture of 6.4 g of methane and 8.8 g of carbon dioxide in a 10 L vessel at 27∘C is ____kPa(Round off to the Nearest Integer).[Assume gases are ideal, R=8.314 J mol−1 K−1 Atomic masses : C=12.0 u, H:1.0 u, O:16.0 u]

Match the following columnPolymerMonomer(i) Buna−S(P) Styrene(ii) ethylene glycol(Q) terylene(iii) Elastomer(R) chloroprene

70 The pH of 0.005M codeine (C18H21NO3) solution is 9.95. Its pkb value is A 8.92 B 5.81 C 3.76 D 4.29

MATCH THE FOLLOWING – 1

The resistance of 0.01 N solution of an electrolytewas found to be 210 ohm at 298 K using aconductivity cell of cell constant 0.66 cm1. Theequivalent conductance of solution is :-(1) 314.28 mho cm eq(2) 3.14 mho cm2 eq(3) 314.28 mho cm2 eq(4) 3.14 mho cm2 eq

Derive the equation of henry's law