46295 + Interview Questions in Chemistry

1.	How many lattice points are there in one unit cell of each of the following lattice ? (i) Face-centred cubic (ii) Face - centred tetragonal (iii) Body - centred
Answer» How many lattice points are there in one unit cell of each of the following lattice ? (i) Face-centred cubic (ii) Face - centred tetragonal (iii) Body - centred

1.

How many lattice points are there in one unit cell of each of the following lattice ? (i) Face-centred cubic (ii) Face - centred tetragonal (iii) Body - centred

Answer»

How many lattice points are there in one unit cell of each of the following lattice ?

(i) Face-centred cubic

(ii) Face - centred tetragonal

(iii) Body - centred

2.	In which of the following electrochemical cell overall cell reaction is : HgO(s)+H2(g)→Hg(l)+H2O(l)
Answer» In which of the following electrochemical cell overall cell reaction is : $H g O (s) + H_{2} (g) \to H g (l) + H_{2} O (l)$

Discussion

3.	Define the following terms : (i) Nucleotides (ii) Anomers (iii) Essential amino acids
Answer» Define the following terms : (i) Nucleotides (ii) Anomers (iii) Essential amino acids

Discussion

4.	What are Chelating agents?
Answer» What are Chelating agents?

Discussion

5.	Which of the following species have S-S bonds?
Answer» Which of the following species have S-S bonds?

Discussion

6.	Select the incorrect statement(s):
Answer» Select the incorrect statement(s):

Discussion

7.	For a sample of perfect gas when its pressure is changed isothermally from pi to pf, the entropy change is given by
Answer» For a sample of perfect gas when its pressure is changed isothermally from $p_{i}$ to $p_{f},$ the entropy change is given by

Discussion

8.	Which amongst the following is the strongest acid?
Answer» Which amongst the following is the strongest acid?

Discussion

9.	An alkene ‘A’ contains three C – C, eight C – H σ bonds and one C – C π bond. ‘A’ on ozonolysis gives two moles of an aldehyde of molar mass 44 u. Write IUPAC name of ‘A’.
Answer» An alkene ‘A’ contains three C – C, eight C – H σ bonds and one C – C π bond. ‘A’ on ozonolysis gives two moles of an aldehyde of molar mass 44 u. Write IUPAC name of ‘A’.

Discussion

10.	A crystalline solid of a pure substance has a face-centred cubic structure with a cell edge of 400 pm. If the density of the substance in the crystal is 8 gcm−3, then the number of atoms present in 256 g of the crystal is N×1024. The value of N is
Answer» A crystalline solid of a pure substance has a face-centred cubic structure with a cell edge of 400 pm. If the density of the substance in the crystal is $8 g c m^{- 3},$ then the number of atoms present in 256 g of the crystal is $N \times 10^{24}$ . The value of N is

Discussion

11.	In the following questions a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct answer out of the following choices. (a) Assertion and Reason both are correct statements and Reason is correct explanation for Assertion. (b) Assertion and Reason both are correct satements but Reason is not correct explanation for Assertion. (c) Assertion is correct statement but Reason is wrong statement (d) Assertion is wrong statement but Reason is correct statement. Assertion (A) Total number of octahedral voids present in unit cell of cubic close packing including the one that is present at the body centre, is four. Reason (R) Besides the body centre there is one octahedral void present at the centre of each of the six faces of the unit cell and each of which is shared between two adjacent unit cells.
Answer» In the following questions a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct answer out of the following choices. (a) Assertion and Reason both are correct statements and Reason is correct explanation for Assertion. (b) Assertion and Reason both are correct satements but Reason is not correct explanation for Assertion. (c) Assertion is correct statement but Reason is wrong statement (d) Assertion is wrong statement but Reason is correct statement. Assertion (A) Total number of octahedral voids present in unit cell of cubic close packing including the one that is present at the body centre, is four. Reason (R) Besides the body centre there is one octahedral void present at the centre of each of the six faces of the unit cell and each of which is shared between two adjacent unit cells.

11.

In the following questions a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct answer out of the following choices. (a) Assertion and Reason both are correct statements and Reason is correct explanation for Assertion. (b) Assertion and Reason both are correct satements but Reason is not correct explanation for Assertion. (c) Assertion is correct statement but Reason is wrong statement (d) Assertion is wrong statement but Reason is correct statement. Assertion (A) Total number of octahedral voids present in unit cell of cubic close packing including the one that is present at the body centre, is four. Reason (R) Besides the body centre there is one octahedral void present at the centre of each of the six faces of the unit cell and each of which is shared between two adjacent unit cells.

Answer»

In the following questions a statement of Assertion (A) followed by a statement of Reason (R) is given. Choose the correct answer out of the following choices.

(a) Assertion and Reason both are correct statements and Reason is correct explanation for Assertion.

(b) Assertion and Reason both are correct satements but Reason is not correct explanation for Assertion.

(c) Assertion is correct statement but Reason is wrong statement

(d) Assertion is wrong statement but Reason is correct statement.

Assertion (A) Total number of octahedral voids present in unit cell of cubic close packing including the one that is present at the body centre, is four.

Reason (R) Besides the body centre there is one octahedral void present at the centre of each of the six faces of the unit cell and each of which is shared between two adjacent unit cells.

Discussion

12.	Why are liquids and gases categorised as fluids ?
Answer» Why are liquids and gases categorised as fluids ?

Discussion

13.	Draw figure to show the splitting of d-orbitals in an octahedral crystal field.
Answer» Draw figure to show the splitting of d-orbitals in an octahedral crystal field.

Discussion

14.	How to find atomic number of different elements
Answer» How to find atomic number of different elements

Discussion

15.	Which of the follwoing group II metal hydroxide is soft, white and edible?
Answer» Which of the follwoing group II metal hydroxide is soft, white and edible?

Discussion

16.	If A, B and C are the three hypothetical elements of Dobereiner's Triads and atomic mass of A and B are 7 and 15 respectively then the atomic mass of C is :
Answer» If A, B and C are the three hypothetical elements of Dobereiner's Triads and atomic mass of A and B are 7 and 15 respectively then the atomic mass of C is :

Discussion

17.	How many Pi and sigma bond does propane contains
Answer» How many Pi and sigma bond does propane contains

Discussion

18.	A bullet of mass 'm' hits a target of mass M hanging by a string and gets embedded in it. If the block rises to a height h as a result of this collision, the velocity of the bullet before collision is
Answer» A bullet of mass 'm' hits a target of mass M hanging by a string and gets embedded in it. If the block rises to a height h as a result of this collision, the velocity of the bullet before collision is

Discussion

19.	During the process of electrolytic refining of copper, some metals present as impurity settle as anode mud. These are-
Answer» During the process of electrolytic refining of copper, some metals present as impurity settle as anode mud. These are-

Discussion

20.	In a vertical U-tube containing a liquid, the two arms are maintained at different temperatures t1 and t2 . The liquid columns in the two arms have heights l1 and l2 respectively. The coefficient of volume expansion of the liquid is equal to
Answer» In a vertical U-tube containing a liquid, the two arms are maintained at different temperatures $t_{1} a n d t_{2}$ . The liquid columns in the two arms have heights $l_{1} a n d l_{2}$ respectively. The coefficient of volume expansion of the liquid is equal to

Discussion

21.	For the given isotherm for one mole of an ideal gas, which follows Boyle's law, what will be the value of temperature.
Answer» For the given isotherm for one mole of an ideal gas, which follows Boyle's law, what will be the value of temperature.

21.

For the given isotherm for one mole of an ideal gas, which follows Boyle's law, what will be the value of temperature.

Answer»

For the given isotherm for one mole of an ideal gas, which follows Boyle's law, what will be the value of temperature.

Discussion

22.	The correct order of decreasing basic strengths of x, y and z is:
Answer» The correct order of decreasing basic strengths of $x, y$ and $z$ is:

Discussion

23.	Predict the product:
Answer» Predict the product:

Discussion

24.	In a face-centred cubic lattice, atom A occupies the corner position and atom B occupies the face -centred positions. If one atom of B is missing from one of the face - centred points, the formula of the compound is
Answer» In a face-centred cubic lattice, atom A occupies the corner position and atom B occupies the face -centred positions. If one atom of B is missing from one of the face - centred points, the formula of the compound is

Discussion

25.	(a) Account for the following : (i) o-nitrophenol is more steam volatile than p-nitrophenol. (ii) t-butyl chloride on heating with sodium methoxide gives 2-methylpropene instead of tbutylmethylether. (b) Write the reaction involved in the following : (i) Reimer-Tiemann reaction (ii) Friedal-Crafts Alkylation of Phenol (c) Give simple chemical test to distinguish between Ethanol and Phenol
Answer» (a) Account for the following : (i) o-nitrophenol is more steam volatile than p-nitrophenol. (ii) t-butyl chloride on heating with sodium methoxide gives 2-methylpropene instead of tbutylmethylether. (b) Write the reaction involved in the following : (i) Reimer-Tiemann reaction (ii) Friedal-Crafts Alkylation of Phenol (c) Give simple chemical test to distinguish between Ethanol and Phenol

Discussion

26.	Write the resonance structures for SO3, NO2 and NO−3 .
Answer» Write the resonance structures for $S O_{3}$ , $N O_{2}$ and $N O_{3}^{-}$ .

Discussion

27.	Convert -40°F to Kelvin.
Answer» Convert -40°F to Kelvin.

Discussion

28.	The strength of sigma bonds formed by the overlapping of atomic orbitals is in the order:
Answer» The strength of sigma bonds formed by the overlapping of atomic orbitals is in the order:

Discussion

29.	Accepcting the definition that an acid is a proton donor, the acid in the following reaction,NH3+H2O→NH+4+OH−is:
Answer» Accepcting the definition that an acid is a proton donor, the acid in the following reaction, $N H_{3} + H_{2} O \to N H_{4}^{+} + O H^{-} i s :$

Discussion

30.	A tea or coffee is slipped in a saucer why
Answer» A tea or coffee is slipped in a saucer why

Discussion

31.	Balance the following equation by ion electron method: Cr2O2−7+C2H4O+H+→2Cr3++C2H4O2+H2O
Answer» Balance the following equation by ion electron method: $C r_{2} O_{7}^{2 -} + C_{2} H_{4} O + H^{+} \to 2 C r^{3 +} + C_{2} H_{4} O_{2} + H_{2} O$

Discussion

32.	Which of the following aqueous solution has osmotic pressure nearest to that of an equimolar solution of K4[Fe(CN)6]?
Answer» Which of the following aqueous solution has osmotic pressure nearest to that of an equimolar solution of $K_{4} [F e (C N)_{6}]$ ?

Discussion

33.	The oxidation state of Chromium (Cr) in the complex [Cr(H2O)4Cl2]+ is :
Answer» The oxidation state of Chromium $(C r)$ in the complex $[C r (H_{2} O)_{4} C l_{2}]^{+}$ is :

Discussion

34.	a solid is made up of two elements X and Z atoms that are in CCP arrangement while atoms X occupy all tetrahedral sites what is the formula of the compound
Answer» a solid is made up of two elements X and Z atoms that are in CCP arrangement while atoms X occupy all tetrahedral sites what is the formula of the compound

Discussion

35.	Ionic hydride formed by
Answer» Ionic hydride formed by

Discussion

36.	The most abundant metal in the earth's crust is ___.
Answer» The most abundant metal in the earth's crust is ___.

Discussion

37.	A hollow cylinder of mass m made heavy at its bottom is floating vertically in water. It is tilted from its vertical position through an angle and is left. The restoring force acting on it is
Answer» A hollow cylinder of mass m made heavy at its bottom is floating vertically in water. It is tilted from its vertical position through an angle and is left. The restoring force acting on it is

Discussion

38.	Which is more stable carbonium ion Sec pentyl carbonation Ter.pentylcarbocation Isopentycarbocation Neopentylcarbocation Pls explain ans is terpentyl carbocation
Answer» Which is more stable carbonium ion Sec pentyl carbonation Ter.pentylcarbocation Isopentycarbocation Neopentylcarbocation Pls explain ans is terpentyl carbocation

38.

Which is more stable carbonium ion Sec pentyl carbonation Ter.pentylcarbocation Isopentycarbocation Neopentylcarbocation Pls explain ans is terpentyl carbocation

Answer»

Which is more stable carbonium ion

Sec pentyl carbonation

Ter.pentylcarbocation

Isopentycarbocation

Neopentylcarbocation

Pls explain ans is terpentyl carbocation

Discussion

39.	In Polar molecular solids Most of them are gases or liquids at room temperature and pressure. Then my qustion is why are we calling that a Solid , if it is seen in gas or liquid
Answer» In Polar molecular solids Most of them are gases or liquids at room temperature and pressure. Then my qustion is why are we calling that a Solid , if it is seen in gas or liquid

Discussion

40.	Three atoms of magnesium combine with 2 atoms of nitrogen. What will be the weight of magnesium which combines with 1.86 g of nitrogen?
Answer» Three atoms of magnesium combine with 2 atoms of nitrogen. What will be the weight of magnesium which combines with 1.86 g of nitrogen?

Discussion

41.	How many electrons,protons and photons are involved in lysis of water to evolve one molecule of oxygen?
Answer» How many electrons,protons and photons are involved in lysis of water to evolve one molecule of oxygen?

Discussion

42.	Atomic hydrogen is allowed to combine on the surface to be welded to generate the temperature of a)400K b)3000K c)4600K d)4000K
Answer» Atomic hydrogen is allowed to combine on the surface to be welded to generate the temperature of a)400K b)3000K c)4600K d)4000K

Discussion

43.	AΔ−→B+C↑A&BothB+NaOH+Zn→D↑+Na2ZnO2+H2ONa2CO3(aq)mixtures NO&NO2−−−−−−−−−−−−→passedE+F↑ Identify the Incorrect statement for the above sequence of the reaction
Answer» $A Δ - \to B + C ↑ A & B o t h B + N a O H + Z n \to D ↑ + N a_{2} Z n O_{2} + H_{2} O N a_{2} C O_{3} (a q) m i x t u r e s N O & N O_{2} - ----------- \to p a s s e d E + F ↑$ Identify the Incorrect statement for the above sequence of the reaction

43.

AΔ−→B+C↑A&BothB+NaOH+Zn→D↑+Na2ZnO2+H2ONa2CO3(aq)mixtures NO&NO2−−−−−−−−−−−−→passedE+F↑ Identify the Incorrect statement for the above sequence of the reaction

Answer»

$A Δ - \to B + C ↑ A & B o t h B + N a O H + Z n \to D ↑ + N a_{2} Z n O_{2} + H_{2} O N a_{2} C O_{3} (a q) m i x t u r e s N O & N O_{2} - ----------- \to p a s s e d E + F ↑$

Identify the Incorrect statement for the above sequence of the reaction

Discussion

44.	Why it is difficult to start a bike in winter than in summer.Give reason.
Answer» Why it is difficult to start a bike in winter than in summer.Give reason.

Discussion

45.	A person suffers from microcytic anaemia due to deficiency of
Answer» A person suffers from microcytic anaemia due to deficiency of

Discussion

46.	Can someone explain to me what n factor/valency factor is? With some examples
Answer» Can someone explain to me what n factor/valency factor is? With some examples

Discussion

47.	What is dimensional consistency?
Answer» What is dimensional consistency?

Discussion

48.	1 g of pure alpha glucose crystals are dissolved in water and after attaining equilibrium amount of alpha glucose in the solution is?
Answer» 1 g of pure alpha glucose crystals are dissolved in water and after attaining equilibrium amount of alpha glucose in the solution is?

Discussion

49.	In keto - enol tautomerism of dicarbonyl compounds, the enol form is preferred in contrast to the keto-form this is due to
Answer» In keto - enol tautomerism of dicarbonyl compounds, the enol form is preferred in contrast to the keto-form this is due to

Discussion

50.	In which of the following complexes, nickel is in the highest oxidation state?
Answer» In which of the following complexes, nickel is in the highest oxidation state?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

How many lattice points are there in one unit cell of each of the following lattice ? (i) Face-centred cubic (ii) Face - centred tetragonal (iii) Body - centred

In which of the following electrochemical cell overall cell reaction is : HgO(s)+H2(g)→Hg(l)+H2O(l)

Define the following terms : (i) Nucleotides (ii) Anomers (iii) Essential amino acids

What are Chelating agents?

Which of the following species have S-S bonds?

Select the incorrect statement(s):

For a sample of perfect gas when its pressure is changed isothermally from pi to pf, the entropy change is given by

Which amongst the following is the strongest acid?

An alkene ‘A’ contains three C – C, eight C – H σ bonds and one C – C π bond. ‘A’ on ozonolysis gives two moles of an aldehyde of molar mass 44 u. Write IUPAC name of ‘A’.

A crystalline solid of a pure substance has a face-centred cubic structure with a cell edge of 400 pm. If the density of the substance in the crystal is 8 gcm−3, then the number of atoms present in 256 g of the crystal is N×1024. The value of N is

Why are liquids and gases categorised as fluids ?

Draw figure to show the splitting of d-orbitals in an octahedral crystal field.

How to find atomic number of different elements

Which of the follwoing group II metal hydroxide is soft, white and edible?

If A, B and C are the three hypothetical elements of Dobereiner's Triads and atomic mass of A and B are 7 and 15 respectively then the atomic mass of C is :

How many Pi and sigma bond does propane contains

A bullet of mass 'm' hits a target of mass M hanging by a string and gets embedded in it. If the block rises to a height h as a result of this collision, the velocity of the bullet before collision is

During the process of electrolytic refining of copper, some metals present as impurity settle as anode mud. These are-

In a vertical U-tube containing a liquid, the two arms are maintained at different temperatures t1 and t2 . The liquid columns in the two arms have heights l1 and l2 respectively. The coefficient of volume expansion of the liquid is equal to

For the given isotherm for one mole of an ideal gas, which follows Boyle's law, what will be the value of temperature.

The correct order of decreasing basic strengths of x, y and z is:

Predict the product:

In a face-centred cubic lattice, atom A occupies the corner position and atom B occupies the face -centred positions. If one atom of B is missing from one of the face - centred points, the formula of the compound is

Write the resonance structures for SO3, NO2 and NO−3 .

Convert -40°F to Kelvin.

The strength of sigma bonds formed by the overlapping of atomic orbitals is in the order:

Accepcting the definition that an acid is a proton donor, the acid in the following reaction,NH3+H2O→NH+4+OH−is:

A tea or coffee is slipped in a saucer why

Balance the following equation by ion electron method: Cr2O2−7+C2H4O+H+→2Cr3++C2H4O2+H2O

Which of the following aqueous solution has osmotic pressure nearest to that of an equimolar solution of K4[Fe(CN)6]?

The oxidation state of Chromium (Cr) in the complex [Cr(H2O)4Cl2]+ is :

a solid is made up of two elements X and Z atoms that are in CCP arrangement while atoms X occupy all tetrahedral sites what is the formula of the compound

Ionic hydride formed by

The most abundant metal in the earth's crust is ___.

A hollow cylinder of mass m made heavy at its bottom is floating vertically in water. It is tilted from its vertical position through an angle and is left. The restoring force acting on it is

Which is more stable carbonium ion Sec pentyl carbonation Ter.pentylcarbocation Isopentycarbocation Neopentylcarbocation Pls explain ans is terpentyl carbocation

In Polar molecular solids Most of them are gases or liquids at room temperature and pressure. Then my qustion is why are we calling that a Solid , if it is seen in gas or liquid

Three atoms of magnesium combine with 2 atoms of nitrogen. What will be the weight of magnesium which combines with 1.86 g of nitrogen?

How many electrons,protons and photons are involved in lysis of water to evolve one molecule of oxygen?

Atomic hydrogen is allowed to combine on the surface to be welded to generate the temperature of a)400K b)3000K c)4600K d)4000K

AΔ−→B+C↑A&amp;BothB+NaOH+Zn→D↑+Na2ZnO2+H2ONa2CO3(aq)mixtures NO&amp;NO2−−−−−−−−−−−−→passedE+F↑ Identify the Incorrect statement for the above sequence of the reaction

Why it is difficult to start a bike in winter than in summer.Give reason.

A person suffers from microcytic anaemia due to deficiency of

Can someone explain to me what n factor/valency factor is? With some examples

What is dimensional consistency?

1 g of pure alpha glucose crystals are dissolved in water and after attaining equilibrium amount of alpha glucose in the solution is?

In keto - enol tautomerism of dicarbonyl compounds, the enol form is preferred in contrast to the keto-form this is due to

In which of the following complexes, nickel is in the highest oxidation state?

AΔ−→B+C↑A&BothB+NaOH+Zn→D↑+Na2ZnO2+H2ONa2CO3(aq)mixtures NO&NO2−−−−−−−−−−−−→passedE+F↑ Identify the Incorrect statement for the above sequence of the reaction