46295 + Interview Questions in Chemistry

1.	Predict the major product in the given reaction?
Answer» Predict the major product in the given reaction?

Discussion

2.	An electron is in one of the 3d orbitals. Give the possible values of n, l and ml for this electron.
Answer» An electron is in one of the 3d orbitals. Give the possible values of n, l and ml for this electron.

Discussion

3.	What is the difference between ccp and hcp?
Answer» What is the difference between ccp and hcp?

Discussion

4.	which of the following set of quantum numbers is not possible a. n=3, l=1, m=+2 b. n=3, l=1, m=+1 c. n=3, l=0, m=0 d. n=3, l=2, m=+2
Answer» which of the following set of quantum numbers is not possible a. n=3, l=1, m=+2 b. n=3, l=1, m=+1 c. n=3, l=0, m=0 d. n=3, l=2, m=+2

Discussion

5.	Can i solve hc verma after ncert
Answer» Can i solve hc verma after ncert

Discussion

6.	Why can't we use the norms formula for finding the oxidation number do the compound CH3-CH2-OH
Answer» Why can't we use the norms formula for finding the oxidation number do the compound CH3-CH2-OH

Discussion

7.	Why is helium preferred instead of hydrogen to fill balloons?
Answer» Why is helium preferred instead of hydrogen to fill balloons?

Discussion

8.	In the spinel structure, oxide ions form CCP whereas 18th of the tetrahedral voids are occupied by A2+ cations and 12 of the octahedral voids by B3+ cations. If the oxide ions are replaced by X−83 ions, the number of atomic vacancies per unit cell is :
Answer» In the spinel structure, oxide ions form CCP whereas ${\frac{1}{8}}^{t h}$ of the tetrahedral voids are occupied by $A^{2 +}$ cations and $\frac{1}{2}$ of the octahedral voids by $B^{3 +}$ cations. If the oxide ions are replaced by $X^{\frac{- 8}{3}}$ ions, the number of atomic vacancies per unit cell is :

Discussion

9.	In MnO4- , there is no electron in d orbital but it is coloured ion. Explain.
Answer» In MnO4- , there is no electron in d orbital but it is coloured ion. Explain.

Discussion

10.	Temperature at which the rms speed of O2 is equal to that of neon at 300 K is:
Answer» Temperature at which the rms speed of $O_{2}$ is equal to that of neon at $300 K$ is:

Discussion

11.	Is it not that if number of molecules in a substance or system increase it will exert more pressure on the wall of container so pressure must be extensive in nature. However pressure is said to posses intensive property. Why?
Answer» Is it not that if number of molecules in a substance or system increase it will exert more pressure on the wall of container so pressure must be extensive in nature. However pressure is said to posses intensive property. Why?

Discussion

12.	Select the most stable conformer of HOCH2−CH2F.
Answer» Select the most stable conformer of $H O C H_{2} - C H_{2} F$ .

Discussion

13.	AgCl dissolved in excess NH3, KCN and Na2S2O3 solutions the complex produce ions.
Answer» AgCl dissolved in excess $N H_{3}$ , $K C N$ and $N a_{2} S_{2} O_{3}$ solutions the complex produce ions.

Discussion

14.	How many of the following statements are wrong 1. A relation is said to be reflexive on set A if each element in A is related to itself. 2. Empty relation defined on a non- empty set is reflexive 3. We can define a reflexive relation on A x B, where A is not a subset of B. 4. In a reflexive relation, all the elements should be of the form (a,a) for all a from the set on which the relation is defined __
Answer» How many of the following statements are wrong 1. A relation is said to be reflexive on set A if each element in A is related to itself. 2. Empty relation defined on a non- empty set is reflexive 3. We can define a reflexive relation on A x B, where A is not a subset of B. 4. In a reflexive relation, all the elements should be of the form (a,a) for all a from the set on which the relation is defined __

14.

How many of the following statements are wrong 1. A relation is said to be reflexive on set A if each element in A is related to itself. 2. Empty relation defined on a non- empty set is reflexive 3. We can define a reflexive relation on A x B, where A is not a subset of B. 4. In a reflexive relation, all the elements should be of the form (a,a) for all a from the set on which the relation is defined __

Answer»

How many of the following statements are wrong

1. A relation is said to be reflexive on set A if each element in A is related to itself.

2. Empty relation defined on a non- empty set is reflexive

3. We can define a reflexive relation on A x B, where A is not a subset of B.

4. In a reflexive relation, all the elements should be of the form (a,a) for all a from the set on which the relation is defined

__

Discussion

15.	Which of the following is the reason for water being a liquid?
Answer» Which of the following is the reason for water being a liquid?

Discussion

16.	At a constant temperature a certain mass of gas occupies 7.5It when the pressure is 800 mm of Hg. Calculate the pressure at which the volume of the gas would be decreases by 35% of its initial volume.
Answer» At a constant temperature a certain mass of gas occupies 7.5It when the pressure is 800 mm of Hg. Calculate the pressure at which the volume of the gas would be decreases by 35% of its initial volume.

Discussion

17.	Why in ethene angle between carbon hydrogen bonds is slightly less than angle between carbon hydrogen and carbon carbon Bond?
Answer» Why in ethene angle between carbon hydrogen bonds is slightly less than angle between carbon hydrogen and carbon carbon Bond?

Discussion

18.	What was the percentage increase in production of fertilizers in 2002 compared to that in 1995?
Answer» What was the percentage increase in production of fertilizers in 2002 compared to that in 1995?

Discussion

19.	An aqueous solution of X is added slowly to an aqueous solution of Y as shown in List I. The variation in conductivity of these reactions is given in List II. Match list I with List II and select the correct answer. List IList IIP. (C2H5)3Nx+CH3COOHy1. Conductivity decreases and then increasesQ. KI(0.1M)x+AgNO3y(0.01M)2. Conductivity decreases and then does not change muchR. CH3COOHX+KOHy3.Conductivity increase and then does not change muchS. NaOHx+HIy4. Conductivity does not change much and then increases
Answer» An aqueous solution of X is added slowly to an aqueous solution of Y as shown in List I. The variation in conductivity of these reactions is given in List II. Match list I with List II and select the correct answer. $\begin{matrix} L i s t I & L i s t I I P . (C_{2} H_{5})_{3} N x + C H_{3} C O O H y & 1. C o n d u c t i v i t y d e c r e a s e s a n d t h e n i n c r e a s e s Q . K I (0.1 M) x + A g N O_{3} y (0.01 M) & 2. C o n d u c t i v i t y d e c r e a s e s a n d t h e n d o e s n o t c h a n g e m u c h R . C H_{3} C O O H X + K O H y & 3. C o n d u c t i v i t y i n c r e a s e a n d t h e n d o e s n o t c h a n g e m u c h S . N a O H x + H I y & 4. C o n d u c t i v i t y d o e s n o t c h a n g e m u c h a n d t h e n i n c r e a s e s \end{matrix}$

19.

An aqueous solution of X is added slowly to an aqueous solution of Y as shown in List I. The variation in conductivity of these reactions is given in List II. Match list I with List II and select the correct answer. List IList IIP. (C2H5)3Nx+CH3COOHy1. Conductivity decreases and then increasesQ. KI(0.1M)x+AgNO3y(0.01M)2. Conductivity decreases and then does not change muchR. CH3COOHX+KOHy3.Conductivity increase and then does not change muchS. NaOHx+HIy4. Conductivity does not change much and then increases

Answer»

An aqueous solution of X is added slowly to an aqueous solution of Y as shown in List I. The variation in conductivity of these reactions is given in List II. Match list I with List II and select the correct answer.

$\begin{matrix} L i s t I & L i s t I I P . (C_{2} H_{5})_{3} N x + C H_{3} C O O H y & 1. C o n d u c t i v i t y d e c r e a s e s a n d t h e n i n c r e a s e s Q . K I (0.1 M) x + A g N O_{3} y (0.01 M) & 2. C o n d u c t i v i t y d e c r e a s e s a n d t h e n d o e s n o t c h a n g e m u c h R . C H_{3} C O O H X + K O H y & 3. C o n d u c t i v i t y i n c r e a s e a n d t h e n d o e s n o t c h a n g e m u c h S . N a O H x + H I y & 4. C o n d u c t i v i t y d o e s n o t c h a n g e m u c h a n d t h e n i n c r e a s e s \end{matrix}$

Discussion

20.	Which element with the following outer orbital configuration shown here may exhibit the largest number of oxidation states?
Answer» Which element with the following outer orbital configuration shown here may exhibit the largest number of oxidation states?

Discussion

21.	(R)-2-Bromobutane is allowed to react with NaI in acetone. The product formed is :
Answer» (R)-2-Bromobutane is allowed to react with $N a I$ in acetone. The product formed is :

Discussion

22.	For the reaction N2+3H2⇌2NH3;ΔH=
Answer» For the reaction $N_{2} + 3 H_{2} ⇌ 2 N H_{3}; Δ H =$

Discussion

23.	The equilibrium constant for above reaction is:
Answer» The equilibrium constant for above reaction is:

Discussion

24.	Which of the following is the correct structure of D.D.T.?
Answer» Which of the following is the correct structure of D.D.T.?

Discussion

25.	What are semiconductors?
Answer» What are semiconductors?

Discussion

26.	The incorrect statment among the following.
Answer» The incorrect statment among the following.

Discussion

27.	Frenkel defect appears in -
Answer» Frenkel defect appears in -

Discussion

28.	Which of the following lanthanoid ion is paramagnetic?
Answer» Which of the following lanthanoid ion is paramagnetic?

Discussion

29.	Which of the following is not a reducing agent
Answer» Which of the following is not a reducing agent

29.

Which of the following is not a reducing agent

Answer»

Which of the following is not a reducing agent

Discussion

30.	Which one of the following can form an inner salt in its aqueous solution
Answer» Which one of the following can form an inner salt in its aqueous solution

Discussion

31.	Strongest nucleophile is
Answer» Strongest nucleophile is

Discussion

32.	The donor sites of (EDTA)4− are
Answer» The donor sites of $(E D T A)^{4 -}$ are

Discussion

33.	A hydro carbon C10Hx requires 40 moles of O2 for combustion of 2.5moles. Calculate value of" X"
Answer» A hydro carbon C10Hx requires 40 moles of O2 for combustion of 2.5moles. Calculate value of" X"

Discussion

34.	Calculate wavelength and frequency and wavenumber of a light. whose period is 2×1010 second.
Answer» Calculate wavelength and frequency and wavenumber of a light. whose period is $2 \times 10^{10}$ second.

Discussion

35.	Which of the following gives paracetamol on acetylation?
Answer» Which of the following gives paracetamol on acetylation?

Discussion

36.	What measures were adopted by India for environment conservation?
Answer» What measures were adopted by India for environment conservation?

Discussion

37.	One gram of charcoal adsorbs 100mL of 0.5M CH_3COOH to form a mono layer and thereby the molarity of acetic acid is reduced to 0.49M. Calculate the surface area of the charcoal adsorbed by each molecule of acetic acid. Surface area of charcoal = 3.01×102m2/gm
Answer» One gram of charcoal adsorbs 100mL of 0.5M CH_3COOH to form a mono layer and thereby the molarity of acetic acid is reduced to 0.49M. Calculate the surface area of the charcoal adsorbed by each molecule of acetic acid. Surface area of charcoal = $3.01 \times 10^{2} m^{2} / g m$

Discussion

38.	For a cell reaction involving two electrons, E0cell=0.3 V at 25∘. The equilubrium constant of the reaction is:
Answer» For a cell reaction involving two electrons, $E_{cell}^{0} = 0.3 V$ at $25^{\circ}$ . The equilubrium constant of the reaction is:

Discussion

39.	The lattice site in a pure crystal cannot be occupied by .................. (a) molecule (b) ion (c) electron (d) atom
Answer» The lattice site in a pure crystal cannot be occupied by .................. (a) molecule (b) ion (c) electron (d) atom

39.

The lattice site in a pure crystal cannot be occupied by .................. (a) molecule (b) ion (c) electron (d) atom

Answer»

The lattice site in a pure crystal cannot be occupied by ..................

(a) molecule (b) ion (c) electron (d) atom

Discussion

40.	Which of the following polymer is biodegradable?
Answer» Which of the following polymer is biodegradable?

40.

Which of the following polymer is biodegradable?

Answer»

Which of the following polymer is biodegradable?

Discussion

41.	The most useful classification of drugs for medicinal chemists is ........ (a) on the basis of chemical structure (b) on the basis of drug action (c) on the basis of molecular targets (d) on the basis of the pharmacological effect
Answer» The most useful classification of drugs for medicinal chemists is ........ (a) on the basis of chemical structure (b) on the basis of drug action (c) on the basis of molecular targets (d) on the basis of the pharmacological effect

Discussion

42.	If the radius of an atom of an element which forms a body centered cubic unit cell is 173.2 pm , the volume of unit cell in cm3 is:
Answer» If the radius of an atom of an element which forms a body centered cubic unit cell is 173.2 pm , the volume of unit cell in $c m^{3}$ is:

Discussion

43.	Explain (i) The basis of similarities and differences between metallic and ionic crystals. (ii) Ionic solids are hard and brittle.
Answer» Explain (i) The basis of similarities and differences between metallic and ionic crystals. (ii) Ionic solids are hard and brittle.

43.

Explain (i) The basis of similarities and differences between metallic and ionic crystals. (ii) Ionic solids are hard and brittle.

Answer»

Explain

(i) The basis of similarities and differences between metallic and ionic crystals.

(ii) Ionic solids are hard and brittle.

Discussion

44.	Of the given options, choose the combination that contains metals whose ores are most appropriate for roasting. In other words, Sulphide ores are common for which kind of metals.
Answer» Of the given options, choose the combination that contains metals whose ores are most appropriate for roasting. In other words, Sulphide ores are common for which kind of metals.

Discussion

45.	Statement I The first ionisation energy of Be is greater than that of B. Statement II 2p-orbital is lower in energy than 2s (J2000, (s), 1M)
Answer» Statement I The first ionisation energy of Be is greater than that of B. Statement II 2p-orbital is lower in energy than 2s (J2000, (s), 1M)

Discussion

46.	Calculate packing fraction in the following case to two decimal places. All circles are of equal radius. Multiply the answer by 100 and enter the value. ___
Answer» Calculate packing fraction in the following case to two decimal places. All circles are of equal radius. Multiply the answer by 100 and enter the value. ___

46.

Calculate packing fraction in the following case to two decimal places. All circles are of equal radius. Multiply the answer by 100 and enter the value. ___

Answer»

Calculate packing fraction in the following case to two decimal places. All circles are of equal radius.

Multiply the answer by 100 and enter the value.

___

Discussion

47.	In 2H2 what does the different 2's represent?
Answer» In $2 H_{2}$ what does the different 2's represent?

Discussion

48.	Whic will get divide ? 310-3 (3600)-2 basically how to solve this further plz explain in detail
Answer» Whic will get divide ? 310^-3(3600)^-2basically how to solve this further plz explain in detail

Discussion

49.	Can benzene be saturated?
Answer» Can benzene be saturated?

Discussion

50.	The correct order of Catenation property is:
Answer» The correct order of Catenation property is:

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Predict the major product in the given reaction?

An electron is in one of the 3d orbitals. Give the possible values of n, l and ml for this electron.

What is the difference between ccp and hcp?

which of the following set of quantum numbers is not possible a. n=3, l=1, m=+2 b. n=3, l=1, m=+1 c. n=3, l=0, m=0 d. n=3, l=2, m=+2

Can i solve hc verma after ncert

Why can't we use the norms formula for finding the oxidation number do the compound CH3-CH2-OH

Why is helium preferred instead of hydrogen to fill balloons?

In the spinel structure, oxide ions form CCP whereas 18th of the tetrahedral voids are occupied by A2+ cations and 12 of the octahedral voids by B3+ cations. If the oxide ions are replaced by X−83 ions, the number of atomic vacancies per unit cell is :

In MnO4- , there is no electron in d orbital but it is coloured ion. Explain.

Temperature at which the rms speed of O2 is equal to that of neon at 300 K is:

Is it not that if number of molecules in a substance or system increase it will exert more pressure on the wall of container so pressure must be extensive in nature. However pressure is said to posses intensive property. Why?

Select the most stable conformer of HOCH2−CH2F.

AgCl dissolved in excess NH3, KCN and Na2S2O3 solutions the complex produce ions.

Which of the following is the reason for water being a liquid?

At a constant temperature a certain mass of gas occupies 7.5It when the pressure is 800 mm of Hg. Calculate the pressure at which the volume of the gas would be decreases by 35% of its initial volume.

Why in ethene angle between carbon hydrogen bonds is slightly less than angle between carbon hydrogen and carbon carbon Bond?

What was the percentage increase in production of fertilizers in 2002 compared to that in 1995?

Which element with the following outer orbital configuration shown here may exhibit the largest number of oxidation states?

(R)-2-Bromobutane is allowed to react with NaI in acetone. The product formed is :

For the reaction N2+3H2⇌2NH3;ΔH=

The equilibrium constant for above reaction is:

Which of the following is the correct structure of D.D.T.?

What are semiconductors?

The incorrect statment among the following.

Frenkel defect appears in -

Which of the following lanthanoid ion is paramagnetic?

Which of the following is not a reducing agent

Which one of the following can form an inner salt in its aqueous solution

Strongest nucleophile is

The donor sites of (EDTA)4− are

A hydro carbon C10Hx requires 40 moles of O2 for combustion of 2.5moles. Calculate value of" X"

Calculate wavelength and frequency and wavenumber of a light. whose period is 2×1010 second.

Which of the following gives paracetamol on acetylation?

What measures were adopted by India for environment conservation?

One gram of charcoal adsorbs 100mL of 0.5M CH_3COOH to form a mono layer and thereby the molarity of acetic acid is reduced to 0.49M. Calculate the surface area of the charcoal adsorbed by each molecule of acetic acid. Surface area of charcoal = 3.01×102m2/gm

For a cell reaction involving two electrons, E0cell=0.3 V at 25∘. The equilubrium constant of the reaction is:

The lattice site in a pure crystal cannot be occupied by .................. (a) molecule (b) ion (c) electron (d) atom

Which of the following polymer is biodegradable?

The most useful classification of drugs for medicinal chemists is ........ (a) on the basis of chemical structure (b) on the basis of drug action (c) on the basis of molecular targets (d) on the basis of the pharmacological effect

If the radius of an atom of an element which forms a body centered cubic unit cell is 173.2 pm , the volume of unit cell in cm3 is:

Explain (i) The basis of similarities and differences between metallic and ionic crystals. (ii) Ionic solids are hard and brittle.

Of the given options, choose the combination that contains metals whose ores are most appropriate for roasting. In other words, Sulphide ores are common for which kind of metals.

Statement I The first ionisation energy of Be is greater than that of B. Statement II 2p-orbital is lower in energy than 2s (J2000, (s), 1M)

Calculate packing fraction in the following case to two decimal places. All circles are of equal radius. Multiply the answer by 100 and enter the value. ___

In 2H2 what does the different 2's represent?

Whic will get divide ? 3*10-3 *(3600)-2 basically how to solve this further plz explain in detail

Can benzene be saturated?

The correct order of Catenation property is:

Whic will get divide ? 310-3 (3600)-2 basically how to solve this further plz explain in detail