46295 + Interview Questions in Chemistry

1.	Calculate the mole fraction of ethylene glycol in a solution containing 20% of ethylene glycol by mass.
Answer» Calculate the mole fraction of ethylene glycol in a solution containing 20% of ethylene glycol by mass.

Discussion

2.	How do you identify different types of Bond(Pi and Sigma) and how do you find the no. of them ?
Answer» How do you identify different types of Bond(Pi and Sigma) and how do you find the no. of them ?

Discussion

3.	How many atoms does an end-centered cubic lattice have?
Answer» How many atoms does an end-centered cubic lattice have?

Discussion

4.	In the textbook the E value for copper is positive ,it is due to the sum of enthalpy of sublimation and ionization not balancing hydration enthalpy .My question is how the electrode potential dependent upon enthalpy of sublimation , ionization and hydration ?
Answer» In the textbook the E value for copper is positive ,it is due to the sum of enthalpy of sublimation and ionization not balancing hydration enthalpy .My question is how the electrode potential dependent upon enthalpy of sublimation , ionization and hydration ?

Discussion

5.	Equal masses of methane and oxygen are mixed in an empty container at 25 degrees centigrade. The fraction of the total pressure exerted by Oxygen is: Options1)1/3 2)1/2 3)2/3 4)1/3*273/298 Answer is option1
Answer» Equal masses of methane and oxygen are mixed in an empty container at 25 degrees centigrade. The fraction of the total pressure exerted by Oxygen is: Options1)1/3 2)1/2 3)2/3 4)1/3*273/298 Answer is option1

5.

Equal masses of methane and oxygen are mixed in an empty container at 25 degrees centigrade. The fraction of the total pressure exerted by Oxygen is: Options1)1/3 2)1/2 3)2/3 4)1/3*273/298 Answer is option1

Answer»

Equal masses of methane and oxygen are mixed in an empty container at 25 degrees centigrade. The fraction of the total pressure exerted by Oxygen is:

Options1)1/3

2)1/2

3)2/3

4)1/3*273/298

Answer is option1

Discussion

6.	Which of the following substances gives a flame colouration different from the other?
Answer» Which of the following substances gives a flame colouration different from the other?

Discussion

7.	The arrangement of (CH3)3C−,(CH3)2CH−,CH3CH2− When attached to a benzene or an unsaturated group in increasing order of inductive effect is:
Answer» The arrangement of $(C H_{3})_{3} C -, (C H_{3})_{2} C H -, C H_{3} C H_{2} -$ When attached to a benzene or an unsaturated group in increasing order of inductive effect is:

Discussion

8.	Explain why is there a phenomenal decrease in ionisation enthalpy from carbon to silicon?
Answer» Explain why is there a phenomenal decrease in ionisation enthalpy from carbon to silicon?

Discussion

9.	which one of the given options would convert propylbenzene into (1-methoxypropyl)benzene:
Answer» which one of the given options would convert propylbenzene into (1-methoxypropyl)benzene:

Discussion

10.	An aqueous solution of BaCl2 (1.28gm in 100gm of water)boils at 100.0832∘ at 1 atm. Calculate the degree of dissociation. ( Kb of water is 0.512 k/m)
Answer» An aqueous solution of $B a C l_{2}$ (1.28gm in 100gm of water)boils at ${100.0832}^{\circ}$ at 1 atm. Calculate the degree of dissociation. ( $K_{b}$ of water is 0.512 k/m)

Discussion

11.	In which of the following reactions diastereomer isomer will formed?
Answer» In which of the following reactions diastereomer isomer will formed?

Discussion

12.	E⊖ values of some redox couples are given below. On the basis of these values choose the coorect option. E⊖ values : Br2Br−=+1.90Ag+Ag(s)=+0.80Cu2+Cu(s)=+0.34I2(S)I−=+0.54; (a) Cu will reduce Br− (b) Cu will reduce Ag (c) Cu will reduce I− (d) Cu will reduce Br2
Answer» $E^{⊖}$ values of some redox couples are given below. On the basis of these values choose the coorect option. $E^{⊖}$ values : $\frac{B r_{2}}{B r^{-}} = + 1.90 \frac{A g^{+}}{A g (s)} = + 0.80 \frac{C u^{2 +}}{C u (s)} = + 0.34 \frac{I_{2} (S)}{I^{-}} = + 0.54;$ (a) Cu will reduce $B r^{-}$ (b) Cu will reduce $A g$ (c) Cu will reduce $I^{-}$ (d) Cu will reduce $B r_{2}$

12.

E⊖ values of some redox couples are given below. On the basis of these values choose the coorect option. E⊖ values : Br2Br−=+1.90Ag+Ag(s)=+0.80Cu2+Cu(s)=+0.34I2(S)I−=+0.54; (a) Cu will reduce Br− (b) Cu will reduce Ag (c) Cu will reduce I− (d) Cu will reduce Br2

Answer»

$E^{⊖}$ values of some redox couples are given below. On the basis of these values choose the coorect option.
$E^{⊖}$ values :

$\frac{B r_{2}}{B r^{-}} = + 1.90 \frac{A g^{+}}{A g (s)} = + 0.80 \frac{C u^{2 +}}{C u (s)} = + 0.34 \frac{I_{2} (S)}{I^{-}} = + 0.54;$

(a) Cu will reduce $B r^{-}$
(b) Cu will reduce $A g$
(c) Cu will reduce $I^{-}$
(d) Cu will reduce $B r_{2}$

Discussion

13.	P={x:10<3x−2<34,x∈R}Q={x:28≤5X+3≤68,x∈R} The solution for P∩Q = .
Answer» $P = {x : 10 < 3 x - 2 < 34, x \in R} Q = {x : 28 \leq 5 X + 3 \leq 68, x \in R}$ The solution for $P \cap Q$ = .

Discussion

14.	Among the following molecules, the molecule with linear shape is:
Answer» Among the following molecules, the molecule with linear shape is:

Discussion

15.	Which of the following best describes a tetrahedral void?
Answer» Which of the following best describes a tetrahedral void?

Discussion

16.	How does H2O2 behave as a bleaching agent?
Answer» How does $H_{2} O_{2}$ behave as a bleaching agent?

Discussion

17.	If we apply potential difference so that an electron is accelerated continuosly in a vaccum tube such that a decrease of 10% occurs in its de Brogile wave length. In such a case the change observed in kinetic energy of electron will be approximately ?
Answer» If we apply potential difference so that an electron is accelerated continuosly in a vaccum tube such that a decrease of 10% occurs in its de Brogile wave length. In such a case the change observed in kinetic energy of electron will be approximately ?

Discussion

18.	The total energy after an elastic collision
Answer» The total energy after an elastic collision

Discussion

19.	How many bonding electron pairs are there in white phosphorus?___
Answer» How many bonding electron pairs are there in white phosphorus?___

Discussion

20.	When an ideal diaatomic gas is heated at constant pressure, the fraction of the heat energy supplied which increases the internal energy of the gas is:
Answer» When an ideal diaatomic gas is heated at constant pressure, the fraction of the heat energy supplied which increases the internal energy of the gas is:

Discussion

21.	Select the right conventional representation for axial and equatorial hydrogens among the following.
Answer» Select the right conventional representation for axial and equatorial hydrogens among the following.

Discussion

22.	The final product formed when ethyl bromide is treated with excess of alcoholic KOH is
Answer» The final product formed when ethyl bromide is treated with excess of alcoholic KOH is

Discussion

23.	Heat required to convert one gram of ice at 0o C into steam at 100o C is (given Lsteam = 536 cal/gm)
Answer» Heat required to convert one gram of ice at $0^{o} C$ into steam at $100^{o} C$ is (given $L_{s t e a m}$ = 536 cal/gm)

Discussion

24.	Which of the following will give maimum number of isomers ?
Answer» Which of the following will give maimum number of isomers ?

Discussion

25.	Calculate the frequency of the limiting line of Brackett series in the hydrogen spectrum.
Answer» Calculate the frequency of the limiting line of Brackett series in the hydrogen spectrum.

Discussion

26.	A monoprotic acid in 1.00 M solution is 0.01% ionised. The dissociation constant of this acid is
Answer» A monoprotic acid in 1.00 M solution is 0.01% ionised. The dissociation constant of this acid is

Discussion

27.	Consider all possible isomeric ketones including stereoisomers of MW = 100. All these isomers are independently reacted with NaBH4. The total number of ketones that gives a racemic product(s) is/are___
Answer» Consider all possible isomeric ketones including stereoisomers of MW = 100. All these isomers are independently reacted with $N a B H_{4}$ . The total number of ketones that gives a racemic product(s) is/are___

Discussion

28.	Which of the following group(s) shows +M effect ?
Answer» Which of the following group(s) shows $+ M$ effect ?

Discussion

29.	Enthalpy of fusion of a liquid is 1.435 kcal mol−1 and molar entropy change is 5.26 cal mol−1K−1, hence melting point of liquid is
Answer» Enthalpy of fusion of a liquid is $1.435 k c a l m o l^{- 1}$ and molar entropy change is $5.26 c a l m o l^{- 1} K^{- 1}$ , hence melting point of liquid is

Discussion

30.	Ethylene reacts with ozone gas to form the compound
Answer» Ethylene reacts with ozone gas to form the compound

Discussion

31.	Dissymmetric object is one which
Answer» Dissymmetric object is one which

Discussion

32.	The inversion of Cane sugar proceeds with constant half-life of 500 minutes at pH = 5 for any concentration of sugar. However if pH = 6, the half-life changes to 50minutes. For this reaction rate equation is rate =k[sugar]m[H+]n. The value of “n” is.___
Answer» The inversion of Cane sugar proceeds with constant half-life of 500 minutes at pH = 5 for any concentration of sugar. However if pH = 6, the half-life changes to 50minutes. For this reaction rate equation is rate = $k [s u g a r]^{m} [H^{+}] n$ . The value of “n” is.___

Discussion

33.	In the given conformation C2 is rotated about C2−C3 bond anticlockwise by an angle of 120∘ then the conformation obtained is.
Answer» In the given conformation $C_{2}$ is rotated about $C_{2} - C_{3}$ bond anticlockwise by an angle of $120^{\circ}$ then the conformation obtained is.

33.

In the given conformation C2 is rotated about C2−C3 bond anticlockwise by an angle of 120∘ then the conformation obtained is.

Answer»

In the given conformation $C_{2}$ is rotated about $C_{2} - C_{3}$ bond anticlockwise by an angle of $120^{\circ}$ then the conformation obtained is.

Discussion

34.	A fixed mass of gas is subjected to transformation of states from A to B to C to D and back to A as shown in figure The succeeding operation that enables this transformation of states are:
Answer» A fixed mass of gas is subjected to transformation of states from A to B to C to D and back to A as shown in figure The succeeding operation that enables this transformation of states are:

34.

A fixed mass of gas is subjected to transformation of states from A to B to C to D and back to A as shown in figure The succeeding operation that enables this transformation of states are:

Answer»

A fixed mass of gas is subjected to transformation of states from A to B to C to D and back to A as shown in figure

The succeeding operation that enables this transformation of states are:

Discussion

35.	The rate law for a reaction between the substances A and B is given by rate = k[A]n[B]m On doubling the concentration of A and halving the concentration of B, the ratio of the new rate to the earlier rate of the reaction will be as
Answer» The rate law for a reaction between the substances A and B is given by rate = $k [A]^{n} [B]^{m}$ On doubling the concentration of A and halving the concentration of B, the ratio of the new rate to the earlier rate of the reaction will be as

Discussion

36.	What will be the wavelength of a ball of mass 0.1 kg moving with a velocity of 10 ms−1?
Answer» What will be the wavelength of a ball of mass 0.1 kg moving with a velocity of $10 m s^{- 1}$ ?

Discussion

37.	Which of the following are the minerals of Fluorine?
Answer» Which of the following are the minerals of Fluorine?

Discussion

38.	Which of the following monomers on polymerisation gives polyorymethylene also known as polyacetal and which does not exist in isotactic, syndiotactic and a tactic form????? Options: (a)methoxyethene (b)formaldehyde (c)ethoxyethene (d)propene...... And pls let me know why?? I found this question in the work book provided by byjus...
Answer» Which of the following monomers on polymerisation gives polyorymethylene also known as polyacetal and which does not exist in isotactic, syndiotactic and a tactic form????? Options: (a)methoxyethene (b)formaldehyde (c)ethoxyethene (d)propene...... And pls let me know why?? I found this question in the work book provided by byjus...

Discussion

39.	Which of the following is/are correct order of thermal stability?
Answer» Which of the following is/are correct order of thermal stability?

Discussion

40.	what does trans elimination reaction mean?
Answer» what does trans elimination reaction mean?

Discussion

41.	How will this justify the following order of acidic strength: CH3CH2CHOOH>(CH3)2CHCOOH>(CH3)3COOH
Answer» How will this justify the following order of acidic strength: CH3CH2CHOOH>(CH3)2CHCOOH>(CH3)3COOH

Discussion

42.	At a certain temperature (T), the equilibrium constant (Kc) is 1 for the reaction N2(g)+3H2(g)⇌2NH3(g) If 2 moles of N2, 4 moles of H2, 6 moles of NH3 and 3 moles of inert gas are introduced into a two litre rigid vessel at constant temperature T. It has been found that equilibrium concentration of H2 and NH3 are equal then what is the equilibrium concentration of N2 (in M)?
Answer» At a certain temperature (T), the equilibrium constant $(K_{c})$ is 1 for the reaction $N_{2} (g) + 3 H_{2} (g) ⇌ 2 N H_{3} (g)$ If 2 moles of $N_{2},$ 4 moles of $H_{2},$ 6 moles of $N H_{3}$ and 3 moles of inert gas are introduced into a two litre rigid vessel at constant temperature T. It has been found that equilibrium concentration of $H_{2}$ and $N H_{3}$ are equal then what is the equilibrium concentration of $N_{2}$ (in M)?

Discussion

43.	In the following reactions: Compound X is:
Answer» In the following reactions: Compound X is:

Discussion

44.	What are the drawbacks of Newland's Octaves? (A) Some elements were placed in the same slot. (B) Some unlike elements were placed in the same column. (C) Some similar elements were placed farther apart. The statements those are true for the above question is/are
Answer» What are the drawbacks of Newland's Octaves? (A) Some elements were placed in the same slot. (B) Some unlike elements were placed in the same column. (C) Some similar elements were placed farther apart. The statements those are true for the above question is/are

Discussion

45.	CH3COCl is used to detect the number of amino groups in organic compounds. When a saturated polyamino compound (containing only C, H and N as primary amine) of molecular mass 161 is completely acetylated, it gives a compound of molecular mass 371. Find the total number of atoms per molecule.
Answer» $C H_{3} C O C l$ is used to detect the number of amino groups in organic compounds. When a saturated polyamino compound (containing only C, H and N as primary amine) of molecular mass 161 is completely acetylated, it gives a compound of molecular mass 371. Find the total number of atoms per molecule.

Discussion

46.	1).When concentration of reactant for a 1st order reaction get doubled, rate increases by 4 . Find order of the said reaction?
Answer» 1).When concentration of reactant for a 1st order reaction get doubled, rate increases by 4 . Find order of the said reaction?

Discussion

47.	Calculate the no. of aluminum ions in 0.051 g of Al2O3.
Answer» Calculate the no. of aluminum ions in 0.051 g of $A l_{2} O_{3}$ .

Discussion

48.	Consider the change in oxidation state of Bromine corresponding to different emf values as shown in the diagram below : Then the species undergoing disproportionation is:
Answer» Consider the change in oxidation state of Bromine corresponding to different emf values as shown in the diagram below : Then the species undergoing disproportionation is:

Discussion

49.	In the following question a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below in each question. Assertion (A) Liquids tend to have the maximum number of molecules at their surface. Reason (R) Small liquid drops have spherical shape. (a) Both A and R are true and R is the correct explanation of A (b) Both A and R are true but R is the correct explanation of A (c) A is true but R is false (d) A is false but R is true
Answer» In the following question a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below in each question. Assertion (A) Liquids tend to have the maximum number of molecules at their surface. Reason (R) Small liquid drops have spherical shape. (a) Both A and R are true and R is the correct explanation of A (b) Both A and R are true but R is the correct explanation of A (c) A is true but R is false (d) A is false but R is true

49.

In the following question a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below in each question. Assertion (A) Liquids tend to have the maximum number of molecules at their surface. Reason (R) Small liquid drops have spherical shape. (a) Both A and R are true and R is the correct explanation of A (b) Both A and R are true but R is the correct explanation of A (c) A is true but R is false (d) A is false but R is true

Answer»

In the following question a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct option out of the choices given below in each question.

Assertion (A) Liquids tend to have the maximum number of molecules at their surface.

Reason (R) Small liquid drops have spherical shape.

(a) Both A and R are true and R is the correct explanation of A

(b) Both A and R are true but R is the correct explanation of A

(c) A is true but R is false

(d) A is false but R is true

Discussion

50.	QUESTION 2.156 Heptane and octane form an ideal solution. At 373 K, the vapour pressure of the two liquid components is 105.2 kPa and 46.8 kPa respectively. What will be the vapour pressure of a mixture of 26.0 g of heptane and 35 g of octane?
Answer» QUESTION 2.156 Heptane and octane form an ideal solution. At 373 K, the vapour pressure of the two liquid components is 105.2 kPa and 46.8 kPa respectively. What will be the vapour pressure of a mixture of 26.0 g of heptane and 35 g of octane?

50.

QUESTION 2.156 Heptane and octane form an ideal solution. At 373 K, the vapour pressure of the two liquid components is 105.2 kPa and 46.8 kPa respectively. What will be the vapour pressure of a mixture of 26.0 g of heptane and 35 g of octane?

Answer»

QUESTION 2.156

Heptane and octane form an ideal solution. At 373 K, the vapour pressure of the two liquid components is 105.2 kPa and 46.8 kPa respectively. What will be the vapour pressure of a mixture of 26.0 g of heptane and 35 g of octane?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Calculate the mole fraction of ethylene glycol in a solution containing 20% of ethylene glycol by mass.

How do you identify different types of Bond(Pi and Sigma) and how do you find the no. of them ?

How many atoms does an end-centered cubic lattice have?

In the textbook the E value for copper is positive ,it is due to the sum of enthalpy of sublimation and ionization not balancing hydration enthalpy .My question is how the electrode potential dependent upon enthalpy of sublimation , ionization and hydration ?

Equal masses of methane and oxygen are mixed in an empty container at 25 degrees centigrade. The fraction of the total pressure exerted by Oxygen is: Options1)1/3 2)1/2 3)2/3 4)1/3*273/298 Answer is option1

Which of the following substances gives a flame colouration different from the other?

The arrangement of (CH3)3C−,(CH3)2CH−,CH3CH2− When attached to a benzene or an unsaturated group in increasing order of inductive effect is:

Explain why is there a phenomenal decrease in ionisation enthalpy from carbon to silicon?

which one of the given options would convert propylbenzene into (1-methoxypropyl)benzene:

An aqueous solution of BaCl2 (1.28gm in 100gm of water)boils at 100.0832∘ at 1 atm. Calculate the degree of dissociation. ( Kb of water is 0.512 k/m)

In which of the following reactions diastereomer isomer will formed?

E⊖ values of some redox couples are given below. On the basis of these values choose the coorect option. E⊖ values : Br2Br−=+1.90Ag+Ag(s)=+0.80Cu2+Cu(s)=+0.34I2(S)I−=+0.54; (a) Cu will reduce Br− (b) Cu will reduce Ag (c) Cu will reduce I− (d) Cu will reduce Br2

P={x:10&lt;3x−2&lt;34,x∈R}Q={x:28≤5X+3≤68,x∈R} The solution for P∩Q = .

Among the following molecules, the molecule with linear shape is:

Which of the following best describes a tetrahedral void?

How does H2O2 behave as a bleaching agent?

If we apply potential difference so that an electron is accelerated continuosly in a vaccum tube such that a decrease of 10% occurs in its de Brogile wave length. In such a case the change observed in kinetic energy of electron will be approximately ?

The total energy after an elastic collision

How many bonding electron pairs are there in white phosphorus?___

When an ideal diaatomic gas is heated at constant pressure, the fraction of the heat energy supplied which increases the internal energy of the gas is:

Select the right conventional representation for axial and equatorial hydrogens among the following.

The final product formed when ethyl bromide is treated with excess of alcoholic KOH is

Heat required to convert one gram of ice at 0o C into steam at 100o C is (given Lsteam = 536 cal/gm)

Which of the following will give maimum number of isomers ?

Calculate the frequency of the limiting line of Brackett series in the hydrogen spectrum.

A monoprotic acid in 1.00 M solution is 0.01% ionised. The dissociation constant of this acid is

Consider all possible isomeric ketones including stereoisomers of MW = 100. All these isomers are independently reacted with NaBH4. The total number of ketones that gives a racemic product(s) is/are___

Which of the following group(s) shows +M effect ?

Enthalpy of fusion of a liquid is 1.435 kcal mol−1 and molar entropy change is 5.26 cal mol−1K−1, hence melting point of liquid is

Ethylene reacts with ozone gas to form the compound

Dissymmetric object is one which

The inversion of Cane sugar proceeds with constant half-life of 500 minutes at pH = 5 for any concentration of sugar. However if pH = 6, the half-life changes to 50minutes. For this reaction rate equation is rate =k[sugar]m[H+]n. The value of “n” is.___

In the given conformation C2 is rotated about C2−C3 bond anticlockwise by an angle of 120∘ then the conformation obtained is.

A fixed mass of gas is subjected to transformation of states from A to B to C to D and back to A as shown in figure The succeeding operation that enables this transformation of states are:

The rate law for a reaction between the substances A and B is given by rate = k[A]n[B]m On doubling the concentration of A and halving the concentration of B, the ratio of the new rate to the earlier rate of the reaction will be as

What will be the wavelength of a ball of mass 0.1 kg moving with a velocity of 10 ms−1?

Which of the following are the minerals of Fluorine?

Which of the following is/are correct order of thermal stability?

what does trans elimination reaction mean?

How will this justify the following order of acidic strength: CH3CH2CHOOH>(CH3)2CHCOOH>(CH3)3COOH

In the following reactions: Compound X is:

What are the drawbacks of Newland's Octaves? (A) Some elements were placed in the same slot. (B) Some unlike elements were placed in the same column. (C) Some similar elements were placed farther apart. The statements those are true for the above question is/are

CH3COCl is used to detect the number of amino groups in organic compounds. When a saturated polyamino compound (containing only C, H and N as primary amine) of molecular mass 161 is completely acetylated, it gives a compound of molecular mass 371. Find the total number of atoms per molecule.

1).When concentration of reactant for a 1st order reaction get doubled, rate increases by 4 . Find order of the said reaction?

Calculate the no. of aluminum ions in 0.051 g of Al2O3.

Consider the change in oxidation state of Bromine corresponding to different emf values as shown in the diagram below : Then the species undergoing disproportionation is:

QUESTION 2.156 Heptane and octane form an ideal solution. At 373 K, the vapour pressure of the two liquid components is 105.2 kPa and 46.8 kPa respectively. What will be the vapour pressure of a mixture of 26.0 g of heptane and 35 g of octane?

P={x:10<3x−2<34,x∈R}Q={x:28≤5X+3≤68,x∈R} The solution for P∩Q = .