46295 + Interview Questions in Chemistry

1.	Which of the following may exhibit conformational isomerism?
Answer» Which of the following may exhibit conformational isomerism?

Discussion

2.	Which would exhibit coordination isomerism?
Answer» Which would exhibit coordination isomerism?

Discussion

3.	How many primary amines are possible with the formula C4H11N excluding stereoisomers?
Answer» How many primary amines are possible with the formula $C_{4} H_{11} N$ excluding stereoisomers?

Discussion

4.	42.How many nodal planes are present in sigma ( s and p) bonding molecular orbital?? a) 3 b) 2 c) 1 d) 0
Answer» 42.How many nodal planes are present in sigma ( s and p) bonding molecular orbital?? a) 3 b) 2 c) 1 d) 0

Discussion

5.	When silent discharge was passed in 30ml O2 gas volume becomes 25ml.what% of O2 is converted to O3
Answer» When silent discharge was passed in 30ml O2 gas volume becomes 25ml.what% of O2 is converted to O3

Discussion

6.	Compound 'A' (molecular formula C3H8O is treated with acidified potassium dichromate to form a product 'B' (molecular formula C3H6O). 'B' forms a shining silver mirror on warming with ammoniacal silver nitrate. 'B' when treated with an aqueous solution of H2NCONHNH2 and sodium acetate gives a product 'C'. Identify the structure of 'C'.
Answer» Compound ' $A$ ' (molecular formula $C_{3} H_{8} O$ is treated with acidified potassium dichromate to form a product ' $B$ ' (molecular formula $C_{3} H_{6} O$ ). ' $B$ ' forms a shining silver mirror on warming with ammoniacal silver nitrate. ' $B$ ' when treated with an aqueous solution of $H_{2} N C O N H N H_{2}$ and sodium acetate gives a product ' $C$ '. Identify the structure of ' $C$ '.

Discussion

7.	Which set of elememel shows positive electron gain enthalpy? 1. He,N,O 2. Ne,N,Cl 3. O,Cl,F 4. N,He,Ne
Answer» Which set of elememel shows positive electron gain enthalpy? 1. He,N,O 2. Ne,N,Cl 3. O,Cl,F 4. N,He,Ne

7.

Which set of elememel shows positive electron gain enthalpy? 1. He,N,O 2. Ne,N,Cl 3. O,Cl,F 4. N,He,Ne

Answer»

Which set of elememel shows positive electron gain enthalpy?

1. He,N,O

2. Ne,N,Cl

3. O,Cl,F

4. N,He,Ne

Discussion

8.	hybridization of N in NO2+ , NO3- and NH4+ are
Answer» hybridization of N in NO2+ , NO3- and NH4+ are

Discussion

9.	The tendency towards complex formation is maximum in
Answer» The tendency towards complex formation is maximum in

Discussion

10.	The mass of the ion deposited by passing a current of one Ampere for one second is called the ___ equivalent.
Answer» The mass of the ion deposited by passing a current of one Ampere for one second is called the ___ equivalent.

Discussion

11.	What is a void?
Answer» What is a void?

Discussion

12.	Which one of the following species has plane triangular shape?
Answer» Which one of the following species has plane triangular shape?

Discussion

13.	Which of the following will show aromatic behaviour
Answer» Which of the following will show aromatic behaviour

13.

Which of the following will show aromatic behaviour

Answer»

Which of the following will show aromatic behaviour

Discussion

14.	Identify the correct reagents A, B and C to convert propanoic acid to ethylamine. CH3CH2COOHA→XB→YC→CH3CH2NH2
Answer» Identify the correct reagents A, B and C to convert propanoic acid to ethylamine. $C H_{3} C H_{2} C O O H A \to X B \to Y C \to C H_{3} C H_{2} N H_{2}$

Discussion

15.	A given sample of pure compound contains 9.81 g of Zn, 1.8×1023 atoms of chromium and 0.60 mol of oxygen atoms. What is the simplest formula?
Answer» A given sample of pure compound contains $9.81 g$ of $Z n$ , $1.8 \times 10^{23}$ atoms of chromium and 0.60 mol of oxygen atoms. What is the simplest formula?

Discussion

16.	How to name organic compounds using IUPAC NOMENCLATURE
Answer» How to name organic compounds using IUPAC NOMENCLATURE

Discussion

17.	Which of the following configurations of an element belongs to the 15th group of the modern periodic table?
Answer» Which of the following configurations of an element belongs to the 15 $^{t h}$ group of the modern periodic table?

Discussion

18.	Vernier capiler
Answer» Vernier capiler

Discussion

19.	The major product of following reaction is:
Answer» The major product of following reaction is:

Discussion

20.	Maximum number of atoms are present in(1) 2 g atom Fe(3) 16 g CH4(2) 2 g molecule H2O (4) 10 L H2O
Answer» Maximum number of atoms are present in(1) 2 g atom Fe(3) 16 g CH4(2) 2 g molecule H2O (4) 10 L H2O

Discussion

21.	For the balanced chemical reaction, 4KO2(s)+2CO2(g)→2K2CO3(s)+3O2(g) Determine the weight of solid potassium carbonate obtained when 710 g of KO2 having 60 % purity reacts. (Molar mass of K=39 g/mol)
Answer» For the balanced chemical reaction, $4 K O_{2} (s) + 2 C O_{2} (g) \to 2 K_{2} C O_{3} (s) + 3 O_{2} (g)$ Determine the weight of solid potassium carbonate obtained when $710 g$ of $K O_{2}$ having 60 % purity reacts. (Molar mass of $K = 39 g/mol$ )

Discussion

22.	why do acids show acidic behaviour in the absence of water
Answer» why do acids show acidic behaviour in the absence of water

Discussion

23.	According to Freundlich isotherm, the above graph will be true when:
Answer» According to Freundlich isotherm, the above graph will be true when:

Discussion

24.	Why there is a difference in total number of atoms of each element in 196g of sulphuric acid and 196 amu of sulphuric acid?
Answer» Why there is a difference in total number of atoms of each element in 196g of sulphuric acid and 196 amu of sulphuric acid?

24.

Why there is a difference in total number of atoms of each element in 196g of sulphuric acid and 196 amu of sulphuric acid?

Answer»

Why there is a difference in total number of atoms of each element in

196g of sulphuric acid and 196 amu of sulphuric acid?

Discussion

25.	Among the following, choose the compounds that can react with PCl5 to give POCl3.
Answer» Among the following, choose the compounds that can react with $P C l_{5}$ to give $P O C l_{3}$ .

Discussion

26.	Which one of the following structures represents nylon 6, 6 polymer?
Answer» Which one of the following structures represents nylon 6, 6 polymer?

Discussion

27.	Which of the following elements is a member of the hydride gap?
Answer» Which of the following elements is a member of the hydride gap?

Discussion

28.	40. Identify the product? Mercurous nitrate + HCl
Answer» 40. Identify the product? Mercurous nitrate + HCl

Discussion

29.	Standard Free Energy and Equilibrium constant: The change in free energy for a reaction taking place between gaseous reactants and products represented by general equation.ΔG=ΔG∘+R T lnQP the condition for a system to be at equilibrium is thatΔG=0 and Qp=KPThus at equilibriumΔG∘=−R T lnKPNote: In the reaction, where all gaseous reactants and products; K represents KP, we may conclude that for standard reactions, i.e., at 1 M or 1 atmWhen ΔG∘=−ve or K>1: forward reaction is feasibleΔG∘=+ve or K<1: reverse reaction is feasibleΔG∘=0 or K=1: reaction is at equilibrium (very rare)For the equilibrium NiO(s)+CO(g)⇌Ni(s)+CO2(g),ΔG∘(J Mol−1)=−20700−11.97T.. Calculate the temperature at which the product gases at equilibrium at 1 atm will conatin 400 ppm of carbon monoxide.
Answer» Standard Free Energy and Equilibrium constant: The change in free energy for a reaction taking place between gaseous reactants and products represented by general equation. $Δ G = Δ G^{\circ} + R T l n Q_{P}$ the condition for a system to be at equilibrium is that $Δ G = 0 and Q_{p} = K_{P}$ Thus at equilibrium $Δ G^{\circ} = - R T l n K_{P}$ Note: In the reaction, where all gaseous reactants and products; $K represents K_{P}$ , we may conclude that for standard reactions, i.e., at $1 M or 1 atm$ When $Δ G^{\circ} = - v e or K > 1 : forward reaction is feasible$ $Δ G^{\circ} = + v e or K < 1 : reverse reaction is feasible$ $Δ G^{\circ} = 0 or K = 1 : reaction is at equilibrium (very rare)$ For the equilibrium $N i O (s) + C O (g) ⇌ N i (s) + C O_{2} (g), Δ G^{\circ} ({J Mol}^{- 1}) = - 20700 - 11.97 T .$ . Calculate the temperature at which the product gases at equilibrium at $1 atm$ will conatin $400 ppm$ of carbon monoxide.

Discussion

30.	explain oxidation ofmethyl ketones
Answer» explain oxidation ofmethyl ketones

Discussion

31.	In a first order reaction, if 30% of reaction is completed in 5 minutes, then 90% of reaction will get completed in how much amount of time?
Answer» In a first order reaction, if 30% of reaction is completed in 5 minutes, then 90% of reaction will get completed in how much amount of time?

Discussion

32.	Give reason : phenol with aq bromine gives 246 tribromo phenol but in non polar medium mono substitution takes place
Answer» Give reason : phenol with aq bromine gives 246 tribromo phenol but in non polar medium mono substitution takes place

Discussion

33.	Find the final volume of the gas, if the temperature of 1 L of a gas is increased from 27 ∘C to 57 ∘C, assuming the pressure is kept constant.
Answer» Find the final volume of the gas, if the temperature of $1 L$ of a gas is increased from $27^{\circ} C$ to $57^{\circ} C$ , assuming the pressure is kept constant.

Discussion

34.	4f orbital has _____ radial nodes
Answer» 4f orbital has _____ radial nodes

Discussion

35.	For a gas, the deviation from ideal behavior is maximum at:
Answer» For a gas, the deviation from ideal behavior is maximum at:

Discussion

36.	24.Calculate the equivalent weight of KI in given reaction: CuSO4+KI->Cu2I2+K2SO4+I2
Answer» 24.Calculate the equivalent weight of KI in given reaction: CuSO4+KI->Cu2I2+K2SO4+I2

Discussion

37.	In the atomic volume vs atomic weight of the elements graph, which of the following elements occupies a descending position on the curve?
Answer» In the atomic volume vs atomic weight of the elements graph, which of the following elements occupies a descending position on the curve?

Discussion

38.	what volume of decinormal K_2Cr_2O_7solution would be needed to convert 1.19g of tin in s†an nic chloride in acidic medium?
Answer» what volume of decinormal K_2Cr_2O_7solution would be needed to convert 1.19g of tin in s†an nic chloride in acidic medium?

Discussion

39.	aniline, otho-methyl-Aniline, meta-methyl-Aniline, Para-methyl-aniline compare the basic strengt
Answer» aniline, otho-methyl-Aniline, meta-methyl-Aniline, Para-methyl-aniline compare the basic strengt

Discussion

40.	A compound of sulphur and nitrogen having formula {S_xN_4(g) decomposed at high temperature into N_2(g){ and S_8(g) . If all measurements are made under the same conditions of temperature and pressure, it is { found that for 1 litre of S_xN_4(g) is completely { decomposed and 2.5 litre of gaseous product are { formed. The value of x is
Answer» A compound of sulphur and nitrogen having formula {S_xN_4(g) decomposed at high temperature into N_2(g){ and S_8(g) . If all measurements are made under the same conditions of temperature and pressure, it is { found that for 1 litre of S_xN_4(g) is completely { decomposed and 2.5 litre of gaseous product are { formed. The value of x is

Discussion

41.	Why CuI2 unstable
Answer» Why CuI2 unstable

Discussion

42.	The process, in which no heat enters or leaves the system, is termed as
Answer» The process, in which no heat enters or leaves the system, is termed as

Discussion

43.	A sodium salt of an organic acid ‘X’ produces effervescence with conc.H2SO4. ‘X’ reacts with the acidified aqueous CaCl2 solution to give a white precipitate which decolourises an acidic solution of KMnO4. ‘X’ is:
Answer» A sodium salt of an organic acid ‘X’ produces effervescence with conc. $H_{2} S O_{4}$ . ‘X’ reacts with the acidified aqueous $C a C l_{2}$ solution to give a white precipitate which decolourises an acidic solution of $K M n O_{4}$ . ‘X’ is:

Discussion

44.	Which of the following is used in vulcanization of rubber?
Answer» Which of the following is used in vulcanization of rubber?

Discussion

45.	Among the following complex ions, which is diamagnetic in nature is
Answer» Among the following complex ions, which is diamagnetic in nature is

Discussion

46.	2 he correct order of ionisation potential of Na,P,Cl is
Answer» 2 he correct order of ionisation potential of Na,P,Cl is

Discussion

47.	Does the number of moles of reaction products increase, decrease or remain same when each of the following equilibria is subjected to a decrease in pressure by increasing the volume? (i) PCl5(g)↔PCl3(g)+Cl2(g) (ii) CaO(s)+CO2(g)↔CaCO3(s) (iii) 3Fe(s)+4H2O(g)↔Fe3O4(s)+4H2(g)
Answer» Does the number of moles of reaction products increase, decrease or remain same when each of the following equilibria is subjected to a decrease in pressure by increasing the volume? (i) $P C l_{5} (g) \leftrightarrow P C l_{3} (g) + C l_{2} (g)$ (ii) $C a O (s) + C O_{2} (g) \leftrightarrow C a C O_{3} (s)$ (iii) $3 F e (s) + 4 H_{2} O (g) \leftrightarrow F e_{3} O_{4} (s) + 4 H_{2} (g)$

47.

Does the number of moles of reaction products increase, decrease or remain same when each of the following equilibria is subjected to a decrease in pressure by increasing the volume? (i) PCl5(g)↔PCl3(g)+Cl2(g) (ii) CaO(s)+CO2(g)↔CaCO3(s) (iii) 3Fe(s)+4H2O(g)↔Fe3O4(s)+4H2(g)

Answer»

Does the number of moles of reaction products increase, decrease or remain same when each of the following equilibria is subjected to a decrease in pressure by increasing the volume?

(i) $P C l_{5} (g) \leftrightarrow P C l_{3} (g) + C l_{2} (g)$

(ii) $C a O (s) + C O_{2} (g) \leftrightarrow C a C O_{3} (s)$

(iii) $3 F e (s) + 4 H_{2} O (g) \leftrightarrow F e_{3} O_{4} (s) + 4 H_{2} (g)$

Discussion

48.	why NaCl is more soluble then AgCl ?
Answer» why NaCl is more soluble then AgCl ?

Discussion

49.	16 The number of primary alcohols possible with the formula C4H10O is- A) 2 B) 3 C) 4 D) 5
Answer» 16 The number of primary alcohols possible with the formula C4H10O is- A) 2 B) 3 C) 4 D) 5

Discussion

50.	The vapour pressure of liquid solvent decreased to 0.60 atm from 0.80 atm on addition of non volatile solute. Find mole fraction of solute
Answer» The vapour pressure of liquid solvent decreased to 0.60 atm from 0.80 atm on addition of non volatile solute. Find mole fraction of solute

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Which of the following may exhibit conformational isomerism?

Which would exhibit coordination isomerism?

How many primary amines are possible with the formula C4H11N excluding stereoisomers?

42.How many nodal planes are present in sigma ( s and p) bonding molecular orbital?? a) 3 b) 2 c) 1 d) 0

When silent discharge was passed in 30ml O2 gas volume becomes 25ml.what% of O2 is converted to O3

Which set of elememel shows positive electron gain enthalpy? 1. He,N,O 2. Ne,N,Cl 3. O,Cl,F 4. N,He,Ne

hybridization of N in NO2+ , NO3- and NH4+ are

The tendency towards complex formation is maximum in

The mass of the ion deposited by passing a current of one Ampere for one second is called the ___ equivalent.

What is a void?

Which one of the following species has plane triangular shape?

Which of the following will show aromatic behaviour

Identify the correct reagents A, B and C to convert propanoic acid to ethylamine. CH3CH2COOHA→XB→YC→CH3CH2NH2

A given sample of pure compound contains 9.81 g of Zn, 1.8×1023 atoms of chromium and 0.60 mol of oxygen atoms. What is the simplest formula?

How to name organic compounds using IUPAC NOMENCLATURE

Which of the following configurations of an element belongs to the 15th group of the modern periodic table?

Vernier capiler

The major product of following reaction is:

Maximum number of atoms are present in(1) 2 g atom Fe(3) 16 g CH4(2) 2 g molecule H2O (4) 10 L H2O

For the balanced chemical reaction, 4KO2(s)+2CO2(g)→2K2CO3(s)+3O2(g) Determine the weight of solid potassium carbonate obtained when 710 g of KO2 having 60 % purity reacts. (Molar mass of K=39 g/mol)

why do acids show acidic behaviour in the absence of water

According to Freundlich isotherm, the above graph will be true when:

Why there is a difference in total number of atoms of each element in 196g of sulphuric acid and 196 amu of sulphuric acid?

Among the following, choose the compounds that can react with PCl5 to give POCl3.

Which one of the following structures represents nylon 6, 6 polymer?

Which of the following elements is a member of the hydride gap?

40. Identify the product? Mercurous nitrate + HCl

explain oxidation ofmethyl ketones

In a first order reaction, if 30% of reaction is completed in 5 minutes, then 90% of reaction will get completed in how much amount of time?

Give reason : phenol with aq bromine gives 246 tribromo phenol but in non polar medium mono substitution takes place

Find the final volume of the gas, if the temperature of 1 L of a gas is increased from 27 ∘C to 57 ∘C, assuming the pressure is kept constant.

4f orbital has _____ radial nodes

For a gas, the deviation from ideal behavior is maximum at:

24.Calculate the equivalent weight of KI in given reaction: CuSO4+KI->Cu2I2+K2SO4+I2

In the atomic volume vs atomic weight of the elements graph, which of the following elements occupies a descending position on the curve?

what volume of decinormal K_2Cr_2O_7solution would be needed to convert 1.19g of tin in s†an nic chloride in acidic medium?

aniline, otho-methyl-Aniline, meta-methyl-Aniline, Para-methyl-aniline compare the basic strengt

Why CuI2 unstable

The process, in which no heat enters or leaves the system, is termed as

A sodium salt of an organic acid ‘X’ produces effervescence with conc.H2SO4. ‘X’ reacts with the acidified aqueous CaCl2 solution to give a white precipitate which decolourises an acidic solution of KMnO4. ‘X’ is:

Which of the following is used in vulcanization of rubber?

Among the following complex ions, which is diamagnetic in nature is

2 he correct order of ionisation potential of Na,P,Cl is

Does the number of moles of reaction products increase, decrease or remain same when each of the following equilibria is subjected to a decrease in pressure by increasing the volume? (i) PCl5(g)↔PCl3(g)+Cl2(g) (ii) CaO(s)+CO2(g)↔CaCO3(s) (iii) 3Fe(s)+4H2O(g)↔Fe3O4(s)+4H2(g)

why NaCl is more soluble then AgCl ?

16 The number of primary alcohols possible with the formula C4H10O is- A) 2 B) 3 C) 4 D) 5

The vapour pressure of liquid solvent decreased to 0.60 atm from 0.80 atm on addition of non volatile solute. Find mole fraction of solute