46295 + Interview Questions in Chemistry

1.	Which of the following compounds has the minimum cation to anion size ratio?
Answer» Which of the following compounds has the minimum cation to anion size ratio?

Discussion

2.	What's the use of molecular orbital theory?
Answer» What's the use of molecular orbital theory?

Discussion

3.	One mole of an ideal gas is put through a series of changes as shown in the figure in which 1, 2, 3 mark the three stages of the system. Find the pressure (in bar) at three stages.
Answer» One mole of an ideal gas is put through a series of changes as shown in the figure in which 1, 2, 3 mark the three stages of the system. Find the pressure (in bar) at three stages.

Discussion

4.	The reaction quotient (Q) for the reaction: N2(g)+3H2(g)⇌2NH3(g) is given Q=[NH3]2[N2][H2]3. When will the reaction proceed towards right side?
Answer» The reaction quotient (Q) for the reaction: $N_{2} (g) + 3 H_{2} (g) ⇌ 2 N H_{3} (g)$ is given $Q = \frac{[N H_{3}]^{2}}{[N_{2}] [H_{2}]^{3}} .$ When will the reaction proceed towards right side?

Discussion

5.	Weight of ornament in air is 50g and in water is 46g. Relative densities are as follow: - Au - 12 and Cu - 9. Find out the amlunt of gold in ornament
Answer» Weight of ornament in air is 50g and in water is 46g. Relative densities are as follow: - Au - 12 and Cu - 9. Find out the amlunt of gold in ornament

Discussion

6.	The standard heat of formation values of SF6(g) ,S(g) and F(g) are: −1100,275 and 80 KJ mol−1 respectively. Then the average S - F bond energy in SF6 is:
Answer» The standard heat of formation values of $S F_{6} (g)$ , $S (g)$ and $F (g)$ are: $- 1100, 275$ and $80 K J m o l^{- 1}$ respectively. Then the average S - F bond energy in $S F_{6}$ is:

Discussion

7.	Assuming that having a velocity greater than velocity of light is not possible, find out the value of the highest atomic number of hydrogen like ion which can exist. Given that the velocity of electron in the first orbit of Bohr hydrogen atom is 2.18×106 ms−1.
Answer» Assuming that having a velocity greater than velocity of light is not possible, find out the value of the highest atomic number of hydrogen like ion which can exist. Given that the velocity of electron in the first orbit of Bohr hydrogen atom is $2.18 \times 10^{6} {ms}^{- 1}$ .

Discussion

8.	Which of the following ion has smallest ionic radius?
Answer» Which of the following ion has smallest ionic radius?

Discussion

9.	Why a body which is coated inside with platinum black ,which has a small hole in its wall can act as a black body why not other materials
Answer» Why a body which is coated inside with platinum black ,which has a small hole in its wall can act as a black body why not other materials

Discussion

10.	Indicate the type of hybridization of each carbon atom in the following :- 1. HCONH
Answer» Indicate the type of hybridization of each carbon atom in the following :- 1. HCONH

10.

Indicate the type of hybridization of each carbon atom in the following :- 1. HCONH

Answer»

Indicate the type of hybridization of each carbon atom in the following :-

1. HCONH

Discussion

11.	The magnetic nature of elements depends on the presence of unpaired electrons. Identify the configuration of the transition element, which shows the highest magnetic moment.
Answer» The magnetic nature of elements depends on the presence of unpaired electrons. Identify the configuration of the transition element, which shows the highest magnetic moment.

Discussion

12.	The correct structural representation of diborane is
Answer» The correct structural representation of diborane is

Discussion

13.	Which of the following statements is wrong about relative lowering of vapour pressure?
Answer» Which of the following statements is wrong about relative lowering of vapour pressure?

Discussion

14.	A narrow spectrum antibiotic is active against ................. (a) gram positive or gram negative bacteria (b) gram negative bacteria only (c) single organism or one disease (d) both gram positive and gram negative bacteria
Answer» A narrow spectrum antibiotic is active against ................. (a) gram positive or gram negative bacteria (b) gram negative bacteria only (c) single organism or one disease (d) both gram positive and gram negative bacteria

Discussion

15.	The compound with highest net dipole moment is:
Answer» The compound with highest net dipole moment is:

Discussion

16.	What is payload ?
Answer» What is payload ?

Discussion

17.	Which among the following is a Lewis acid?
Answer» Which among the following is a Lewis acid?

Discussion

18.	Which of the following is/are TRUE about electromeric effect ?
Answer» Which of the following is/are TRUE about electromeric effect ?

Discussion

19.	A straight chain hydrocarbon has the molecular formula C7H10. The hybridization of the carbon atoms form one end of the chain to the other are respectively. sp3,sp2,sp2,sp3,sp2,sp and sp. The structural formula of the hydrocarbon would be:
Answer» A straight chain hydrocarbon has the molecular formula $C_{7} H_{10}$ . The hybridization of the carbon atoms form one end of the chain to the other are respectively. $s p^{3}, s p^{2}, s p^{2}, s p^{3}, s p^{2}, s p$ and $s p$ . The structural formula of the hydrocarbon would be:

Discussion

20.	For silver metal, the threshold frequency (ν0) is 1.12×1017 Hz. What is the maximum kinetic energy of the photoelectrons produced by shining UV light of wavelength 15 ∘A on the metal?
Answer» For silver metal, the threshold frequency $(ν_{0})$ is $1.12 \times 10^{17} Hz$ . What is the maximum kinetic energy of the photoelectrons produced by shining UV light of wavelength $15 \circ A$ on the metal?

Discussion

21.	Phosphorous pentachloride in gaseous phase exists as a monomer. In solid state, it exists as PCl+4 ions. The hybrid state of P-atom in PCl5 is sp3d The hybrid states of P - atoms in PCl+4 and PCl−6 will be:
Answer» Phosphorous pentachloride in gaseous phase exists as a monomer. In solid state, it exists as $P C l_{4}^{+}$ ions. The hybrid state of P-atom in $P C l_{5}$ is $s p^{3} d$ The hybrid states of P - atoms in $P C l_{4}^{+}$ and $P C l_{6}^{-}$ will be:

Discussion

22.	For which of the following KP is less than Kc?
Answer» For which of the following KP is less than Kc?

Discussion

23.	If sodium chloride is heated in vapours of sodium, the colour changes because of
Answer» If sodium chloride is heated in vapours of sodium, the colour changes because of

Discussion

24.	Why do alkali metals have low density and increases down the group
Answer» Why do alkali metals have low density and increases down the group

Discussion

25.	If number of Bonding electrons = 10 and number of anti-bonding electrons = 8, what will be the bond order for the corresponding molecule?
Answer» If number of Bonding electrons = 10 and number of anti-bonding electrons = 8, what will be the bond order for the corresponding molecule?

Discussion

26.	An alloy of metals A, B and C has ‘A’ atoms in a ccp lattice. If ‘B’ atoms occupy the edge-centers and ‘C’ is present at the body-center, then the total number of effective atoms present in a formula unit of the alloy is
Answer» An alloy of metals A, B and C has ‘A’ atoms in a ccp lattice. If ‘B’ atoms occupy the edge-centers and ‘C’ is present at the body-center, then the total number of effective atoms present in a formula unit of the alloy is

Discussion

27.	The reaction of sodium is highly exothermic with H2O. The rate of reaction is lowered by
Answer» The reaction of sodium is highly exothermic with H₂O. The rate of reaction is lowered by

Discussion

28.	The types of bond present in NH4Cl are:
Answer» The types of bond present in NH₄Cl are:

Discussion

29.	As per the figure given below, find the total pressure at the bottom. Density of liquid 1 = 13.6 g/cc Density of liquid 2 = 5.4 g/cc Density of liquid 3 = 2.5 g/cc
Answer» As per the figure given below, find the total pressure at the bottom. Density of liquid 1 = 13.6 $g / c c$ Density of liquid 2 = 5.4 $g / c c$ Density of liquid 3 = 2.5 $g / c c$

Discussion

30.	The presence or absence of hydroxy group on which carbon atom of sugar differentiates RNA and DNA?___
Answer» The presence or absence of hydroxy group on which carbon atom of sugar differentiates RNA and DNA?___

Discussion

31.	For the reaction 2NH3(g)⇌N2(g)+3H2(g),ΔH=93.6 kJ mol−1. Which of the following is incorrect?
Answer» For the reaction $2 N H_{3} (g) ⇌ N_{2} (g) + 3 H_{2} (g), Δ H = 93.6 k J m o l^{- 1}$ . Which of the following is incorrect?

Discussion

32.	Is protein polymer or not?
Answer» Is protein polymer or not?

Discussion

33.	drolysis of an ester was carriee out seperately with 0.05 M HCl an0.05M H2SO4. Then the ratio of khcl by kh2so4
Answer» drolysis of an ester was carriee out seperately with 0.05 M HCl an0.05M H2SO4. Then the ratio of khcl by kh2so4

Discussion

34.	What is the difference between the molecular formula of any two successive alkanes?
Answer» What is the difference between the molecular formula of any two successive alkanes?

Discussion

35.	Coagulation values of the electrolytes AlCl3 and NaCl for As2S3 solution are 0.093 and 52 respectively. How many times AlCl3 has a greater coagulating power than NaCl?
Answer» Coagulation values of the electrolytes $A l C l_{3}$ and $N a C l$ for $A s_{2} S_{3}$ solution are $0.093$ and $52$ respectively. How many times $A l C l_{3}$ has a greater coagulating power than $N a C l$ ?

Discussion

36.	An inorganic compound (A) is a strong reducing agent. Its hydrolysis in water gives a white turbidity (B). Aqueous solution of (A) gives a white precipitate (C) with NaOH solution which is soluble in excess of NaOH. (A) reduces auric chloride to produce purple of cassius. (A) also reduces iodine and gives chromyl chloride test. What is 'B' in the chemical reactions.
Answer» An inorganic compound (A) is a strong reducing agent. Its hydrolysis in water gives a white turbidity (B). Aqueous solution of (A) gives a white precipitate (C) with NaOH solution which is soluble in excess of NaOH. (A) reduces auric chloride to produce purple of cassius. (A) also reduces iodine and gives chromyl chloride test. What is 'B' in the chemical reactions.

Discussion

37.	The dissociation constant of two acids HA1 and HA2 are 3.14 × 10−4 and 1.96 × 10−5 respectively. The relative strength of the acids will be approximately
Answer» The dissociation constant of two acids $H A_{1}$ and $H A_{2}$ are $3.14 \times 10^{- 4}$ and $1.96 \times 10^{- 5}$ respectively. The relative strength of the acids will be approximately

Discussion

38.	The rate constant for the reaction 2N2O5→4NO2+O2 is 3.0×10−5 sec−1. If the rate is 2.4×10−5 mol L−1 sec−1, then the concentration of N2O5 (in mole L−1) is
Answer» The rate constant for the reaction $2 N_{2} O_{5} \to 4 N O_{2} + O_{2}$ is $3.0 \times 10^{- 5} {sec}^{- 1}$ . If the rate is $2.4 \times 10^{- 5} m o l L^{- 1} {sec}^{- 1}$ , then the concentration of $N_{2} O_{5} (i n m o l e L^{- 1}$ ) is

Discussion

39.	What will happen if baking soda is treated with dil.HCl? Give balanced equation.
Answer» What will happen if baking soda is treated with dil.HCl? Give balanced equation.

Discussion

40.	Benzene reacts with CH3COCl in the presence of AlCl3 to give
Answer» Benzene reacts with $C H_{3} C O C l$ in the presence of $A l C l_{3}$ to give

40.

Benzene reacts with CH3COCl in the presence of AlCl3 to give

Answer»

Benzene reacts with $C H_{3} C O C l$ in the presence of $A l C l_{3}$ to give

Discussion

41.	Which of the following exhibit stereoisomerism
Answer» Which of the following exhibit stereoisomerism

Discussion

42.	Consider an economy described by the following function: C = 20 + 0.80Y, I = 30, G = 50, TR = 100. (i) Find the equilibrium level of income and the autonomous expenditure multiplier in the model. (ii) If government expenditure increases by 30, what is the impact on equilibrium income? (iii) If a lump sum tax of 30 is added to pay for the increase in government purchases, how will equilibrium income change?
Answer» Consider an economy described by the following function: C = 20 + 0.80Y, I = 30, G = 50, TR = 100. (i) Find the equilibrium level of income and the autonomous expenditure multiplier in the model. (ii) If government expenditure increases by 30, what is the impact on equilibrium income? (iii) If a lump sum tax of 30 is added to pay for the increase in government purchases, how will equilibrium income change?

42.

Consider an economy described by the following function: C = 20 + 0.80Y, I = 30, G = 50, TR = 100. (i) Find the equilibrium level of income and the autonomous expenditure multiplier in the model. (ii) If government expenditure increases by 30, what is the impact on equilibrium income? (iii) If a lump sum tax of 30 is added to pay for the increase in government purchases, how will equilibrium income change?

Answer»

Consider an economy described by the following function: C = 20 + 0.80Y, I = 30, G = 50, TR = 100.

(i) Find the equilibrium level of income and the autonomous expenditure multiplier in the model.

(ii) If government expenditure increases by 30, what is the impact on equilibrium income?

(iii) If a lump sum tax of 30 is added to pay for the increase in government purchases, how will equilibrium income change?

Discussion

43.	Which equilibrium can be described as Lewis acid-base reaction but not Bronsted acid-base reaction?
Answer» Which equilibrium can be described as Lewis acid-base reaction but not Bronsted acid-base reaction?

Discussion

44.	About seven percent of carbon dioxide is transported to the lungs
Answer» About seven percent of carbon dioxide is transported to the lungs

Discussion

45.	Amongst ClF3, BF3 and NH3 molecules the one with non-planar geometry is
Answer» Amongst $C l F_{3}, B F_{3} a n d N H_{3}$ molecules the one with non-planar geometry is

Discussion

46.	When an electron makes a transtion from its n+1 state to the nth state, the frequency of the emitted radiations is related to n according to (where n>>1):
Answer» When an electron makes a transtion from its $n + 1$ state to the $n t h$ state, the frequency of the emitted radiations is related to $n$ according to (where $n >> 1)$ :

Discussion

47.	Aryl halides do not undergo nucleophilic substitution reactions under ordinary conditions because:
Answer» Aryl halides do not undergo nucleophilic substitution reactions under ordinary conditions because:

Discussion

48.	Ethyl ester. The product P will be
Answer» Ethyl ester. The product P will be

48.

Ethyl ester. The product P will be

Answer»

Ethyl ester. The product P will be

Discussion

49.	In a permanent magnet at room temperature, (a) The magnetic moment of each molecule is zero (b) The individual molecules have a non-zero magnetic moment which is all perfectly aligned (c) Domains are partially aligned (d) Domains are all perfectly aligned
Answer» In a permanent magnet at room temperature, (a) The magnetic moment of each molecule is zero (b) The individual molecules have a non-zero magnetic moment which is all perfectly aligned (c) Domains are partially aligned (d) Domains are all perfectly aligned

49.

In a permanent magnet at room temperature, (a) The magnetic moment of each molecule is zero (b) The individual molecules have a non-zero magnetic moment which is all perfectly aligned (c) Domains are partially aligned (d) Domains are all perfectly aligned

Answer»

In a permanent magnet at room temperature,

(a) The magnetic moment of each molecule is zero
(b) The individual molecules have a non-zero magnetic moment which is all perfectly aligned
(c) Domains are partially aligned
(d) Domains are all perfectly aligned

Discussion

50.	Addition of HBr to propene yields 2-bromopropane, while in the presence of benzoyl peroxide, the same reaction yields 1-bromopropane. Explain and give mechanism.
Answer» Addition of HBr to propene yields 2-bromopropane, while in the presence of benzoyl peroxide, the same reaction yields 1-bromopropane. Explain and give mechanism.

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Which of the following compounds has the minimum cation to anion size ratio?

What's the use of molecular orbital theory?

One mole of an ideal gas is put through a series of changes as shown in the figure in which 1, 2, 3 mark the three stages of the system. Find the pressure (in bar) at three stages.

The reaction quotient (Q) for the reaction: N2(g)+3H2(g)⇌2NH3(g) is given Q=[NH3]2[N2][H2]3. When will the reaction proceed towards right side?

Weight of ornament in air is 50g and in water is 46g. Relative densities are as follow: - Au - 12 and Cu - 9. Find out the amlunt of gold in ornament

The standard heat of formation values of SF6(g) ,S(g) and F(g) are: −1100,275 and 80 KJ mol−1 respectively. Then the average S - F bond energy in SF6 is:

Assuming that having a velocity greater than velocity of light is not possible, find out the value of the highest atomic number of hydrogen like ion which can exist. Given that the velocity of electron in the first orbit of Bohr hydrogen atom is 2.18×106 ms−1.

Which of the following ion has smallest ionic radius?

Why a body which is coated inside with platinum black ,which has a small hole in its wall can act as a black body why not other materials

Indicate the type of hybridization of each carbon atom in the following :- 1. HCONH

The magnetic nature of elements depends on the presence of unpaired electrons. Identify the configuration of the transition element, which shows the highest magnetic moment.

The correct structural representation of diborane is

Which of the following statements is wrong about relative lowering of vapour pressure?

A narrow spectrum antibiotic is active against ................. (a) gram positive or gram negative bacteria (b) gram negative bacteria only (c) single organism or one disease (d) both gram positive and gram negative bacteria

The compound with highest net dipole moment is:

What is payload ?

Which among the following is a Lewis acid?

Which of the following is/are TRUE about electromeric effect ?

A straight chain hydrocarbon has the molecular formula C7H10. The hybridization of the carbon atoms form one end of the chain to the other are respectively. sp3,sp2,sp2,sp3,sp2,sp and sp. The structural formula of the hydrocarbon would be:

For silver metal, the threshold frequency (ν0) is 1.12×1017 Hz. What is the maximum kinetic energy of the photoelectrons produced by shining UV light of wavelength 15 ∘A on the metal?

Phosphorous pentachloride in gaseous phase exists as a monomer. In solid state, it exists as PCl+4 ions. The hybrid state of P-atom in PCl5 is sp3d The hybrid states of P - atoms in PCl+4 and PCl−6 will be:

For which of the following KP is less than Kc?

If sodium chloride is heated in vapours of sodium, the colour changes because of

Why do alkali metals have low density and increases down the group

If number of Bonding electrons = 10 and number of anti-bonding electrons = 8, what will be the bond order for the corresponding molecule?

An alloy of metals A, B and C has ‘A’ atoms in a ccp lattice. If ‘B’ atoms occupy the edge-centers and ‘C’ is present at the body-center, then the total number of effective atoms present in a formula unit of the alloy is

The reaction of sodium is highly exothermic with H2O. The rate of reaction is lowered by

The types of bond present in NH4Cl are:

As per the figure given below, find the total pressure at the bottom. Density of liquid 1 = 13.6 g/cc Density of liquid 2 = 5.4 g/cc Density of liquid 3 = 2.5 g/cc

The presence or absence of hydroxy group on which carbon atom of sugar differentiates RNA and DNA?___

For the reaction 2NH3(g)⇌N2(g)+3H2(g),ΔH=93.6 kJ mol−1. Which of the following is incorrect?

Is protein polymer or not?

drolysis of an ester was carriee out seperately with 0.05 M HCl an0.05M H2SO4. Then the ratio of khcl by kh2so4

What is the difference between the molecular formula of any two successive alkanes?

Coagulation values of the electrolytes AlCl3 and NaCl for As2S3 solution are 0.093 and 52 respectively. How many times AlCl3 has a greater coagulating power than NaCl?

The dissociation constant of two acids HA1 and HA2 are 3.14 × 10−4 and 1.96 × 10−5 respectively. The relative strength of the acids will be approximately

The rate constant for the reaction 2N2O5→4NO2+O2 is 3.0×10−5 sec−1. If the rate is 2.4×10−5 mol L−1 sec−1, then the concentration of N2O5 (in mole L−1) is

What will happen if baking soda is treated with dil.HCl? Give balanced equation.

Benzene reacts with CH3COCl in the presence of AlCl3 to give

Which of the following exhibit stereoisomerism

Which equilibrium can be described as Lewis acid-base reaction but not Bronsted acid-base reaction?

About seven percent of carbon dioxide is transported to the lungs

Amongst ClF3, BF3 and NH3 molecules the one with non-planar geometry is

When an electron makes a transtion from its n+1 state to the nth state, the frequency of the emitted radiations is related to n according to (where n&gt;&gt;1):

Aryl halides do not undergo nucleophilic substitution reactions under ordinary conditions because:

Ethyl ester. The product P will be

In a permanent magnet at room temperature, (a) The magnetic moment of each molecule is zero (b) The individual molecules have a non-zero magnetic moment which is all perfectly aligned (c) Domains are partially aligned (d) Domains are all perfectly aligned

Addition of HBr to propene yields 2-bromopropane, while in the presence of benzoyl peroxide, the same reaction yields 1-bromopropane. Explain and give mechanism.

When an electron makes a transtion from its n+1 state to the nth state, the frequency of the emitted radiations is related to n according to (where n>>1):