46295 + Interview Questions in Chemistry

1.	Which of the following halides easily undergoes hydrolysis?
Answer» Which of the following halides easily undergoes hydrolysis?

Discussion

2.	In any period, the valency of an element
Answer» In any period, the valency of an element

2.

In any period, the valency of an element

Answer»

In any period, the valency of an element

Discussion

3.	59 Explain the mechanism of azo coupling reaction between aniline and benzene diazonium salt and the major product.
Answer» 59 Explain the mechanism of azo coupling reaction between aniline and benzene diazonium salt and the major product.

Discussion

4.	Which of the following is in lonic Equilibrium?
Answer» Which of the following is in lonic Equilibrium?

Discussion

5.	NO2 can be obtained from
Answer» NO₂ can be obtained from

Discussion

6.	4. Under low pressure, minimum deviation from idealgas behaviour is expected from(1) NH3(2) SO2(3) N2(4) СО,
Answer» 4. Under low pressure, minimum deviation from idealgas behaviour is expected from(1) NH3(2) SO2(3) N2(4) СО,

Discussion

7.	Mechanism for preparation of alkene from vicinal dihalide
Answer» Mechanism for preparation of alkene from vicinal dihalide

Discussion

8.	Which of the following compounds are related as chain isomers ?
Answer» Which of the following compounds are related as chain isomers ?

Discussion

9.	15. The oxides of certain hypothetical element contain 27.28%, 42.86%, 52.94%, of oxygen . What is the ratio of the valencies of the element in the three oxides ?
Answer» 15. The oxides of certain hypothetical element contain 27.28%, 42.86%, 52.94%, of oxygen . What is the ratio of the valencies of the element in the three oxides ?

Discussion

10.	8.Values of first four ionisation potential of an element are 68,370,400,485. It belongs to which electronic configuration - 1. 1s2,2s1 2. 1s2,2s2 2p1 3. 1s2,2s2 2p6,3s1
Answer» 8.Values of first four ionisation potential of an element are 68,370,400,485. It belongs to which electronic configuration - 1. 1s2,2s1 2. 1s2,2s2 2p1 3. 1s2,2s2 2p6,3s1

Discussion

11.	how can a charged body have potential due to itself?
Answer» how can a charged body have potential due to itself?

Discussion

12.	How will you differentiate between an alcohol and a carboxylic acid?
Answer» How will you differentiate between an alcohol and a carboxylic acid?

Discussion

13.	In Millikan's oil drop experiment, why do only the electrons stick to the oil drop and not the cations formed?
Answer» In Millikan's oil drop experiment, why do only the electrons stick to the oil drop and not the cations formed?

Discussion

14.	40. Which of the following chemical equations is not balanced? (1) 3Fe + 4H_2O ----> Fe_3O_4 + 4H_2O (2) 4NH_3 + 8O_2 ---> 4NO + 6H_2O (3) 4Na + O_2 ----> 2Na_2O (4) 2FeCl_3 + SO_2 + 2H_2O -----> 2FeCl_2 + 2 HCl + H_2SO_4
Answer» 40. Which of the following chemical equations is not balanced? (1) 3Fe + 4H_2O ----> Fe_3O_4 + 4H_2O (2) 4NH_3 + 8O_2 ---> 4NO + 6H_2O (3) 4Na + O_2 ----> 2Na_2O (4) 2FeCl_3 + SO_2 + 2H_2O -----> 2FeCl_2 + 2 HCl + H_2SO_4

Discussion

15.	The degree of dissociation of PCl5(α) obeying the equilibrium, PCl5(g) ⇌PCl3(g) + Cl2(g) , is approximately related to the pressure at equilibrium by:
Answer» The degree of dissociation of PCl₅(α) obeying the equilibrium, PCl₅(g) ⇌PCl₃(g) + Cl₂(g) , is approximately related to the pressure at equilibrium by:

15.

The degree of dissociation of PCl5(α) obeying the equilibrium, PCl5(g) ⇌PCl3(g) + Cl2(g) , is approximately related to the pressure at equilibrium by:

Answer»

The degree of dissociation of PCl₅(α) obeying the equilibrium,

PCl₅(g) ⇌PCl₃(g) + Cl₂(g) , is approximately related to the pressure at equilibrium by:

Discussion

16.	The compound X(C5H8) reacts with ammonical AgNO3 to give a white precipitate and reacts with excess of KMnO4 to give the acid (CH3)2CH–COOH. Therefore X is
Answer» The compound $X (C_{5} H_{8})$ reacts with ammonical $A g N O_{3}$ to give a white precipitate and reacts with excess of $K M n O_{4}$ to give the acid $(C H_{3})_{2} C H - C O O H$ . Therefore $X$ is

Discussion

17.	Which among the following is not a π bonded orgtanometallic compound ?
Answer» Which among the following is not a $π$ bonded orgtanometallic compound ?

Discussion

18.	Question 1Why should a magnesium ribbon be cleaned before it is burnt in air?
Answer» Question 1 Why should a magnesium ribbon be cleaned before it is burnt in air?

Discussion

19.

Match the following:Oxide Nature(a) CO(i) Basic(b) BaO(ii) Neutral(c) Al2O3(iii) Acidic(d) Cl2O7(iv) AmphotericWhich of the following is correct?

Answer»

Match the following:

Oxide	Nature
(a) $C O$	(i) Basic
(b) $B a O$	(ii) Neutral
(c) $A l_{2} O_{3}$	(iii) Acidic
(d) $C l_{2} O_{7}$	(iv) Amphoteric

Which of the following is correct?

Discussion

20.	Which of the following configurations represent atoms of the elements having the highest second ionization energy?
Answer» Which of the following configurations represent atoms of the elements having the highest second ionization energy?

20.

Which of the following configurations represent atoms of the elements having the highest second ionization energy?

Answer»

Which of the following configurations represent atoms of the elements having the highest second ionization energy?

Discussion

21.	What is an electron? And what are superconductors?
Answer» What is an electron? And what are superconductors?

Discussion

22.	Among the following ions which has the largest ionic radius in aqueous phase?
Answer» Among the following ions which has the largest ionic radius in aqueous phase?

Discussion

23.	Newland arranged elements in increasing order of atomic weights and noted that every eighth element had properties similar to:
Answer» Newland arranged elements in increasing order of atomic weights and noted that every eighth element had properties similar to:

Discussion

24.	Enthalpy of combustion of carbon, hydrogen and C3H8 are x1,x2 and x3 mol−1 respectively. Estimate the enthalpy of formation of C3H8
Answer» Enthalpy of combustion of carbon, hydrogen and $C_{3} H_{8}$ are $x_{1}, x_{2}$ and $x_{3} m o l^{- 1}$ respectively. Estimate the enthalpy of formation of $C_{3} H_{8}$

Discussion

25.	Total volume of atoms present in a face centred cubic unit cell of a metal is (r = radius of atom).
Answer» Total volume of atoms present in a face centred cubic unit cell of a metal is (r = radius of atom).

Discussion

26.	Compounds A and B having molar mass 100 g mol−1& 70 g mol−1 respectively form an ideal solution at 373 K.At 373 K, the vapour pressures of the two liquids are 90 kPa and 45 kPa respectively.What will be the vapour pressure of a mixture of 25 g of A and 35 g of B at 373 K?
Answer» Compounds A and B having molar mass $100 g m o l^{- 1} & 70 g m o l^{- 1}$ respectively form an ideal solution at $373 K$ . At $373 K$ , the vapour pressures of the two liquids are $90 k P a$ and $45 k P a$ respectively. What will be the vapour pressure of a mixture of $25 g$ of A and $35 g$ of B at $373 K$ ?

Discussion

27.	Which of the following properties is NOT exhibited by metallic solids?
Answer» Which of the following properties is NOT exhibited by metallic solids?

Discussion

28.	77 If the vant Hoff factor and degree of dissociation of Al2(SO4)3 are i and alpha then show that i=1+4alpha.
Answer» 77 If the vant Hoff factor and degree of dissociation of Al2(SO4)3 are i and alpha then show that i=1+4alpha.

Discussion

29.	ntwhat is primary,secondary and tertiary Hydrogenn
Answer» ntwhat is primary,secondary and tertiary Hydrogenn

Discussion

30.	Two liquid having vapour pressure P1 note and P2 note in pure state in the ratio of 2:1 are mixed in the molar ratio of 1:2.The ratio of their moles in the vapour state would be
Answer» Two liquid having vapour pressure P1 note and P2 note in pure state in the ratio of 2:1 are mixed in the molar ratio of 1:2.The ratio of their moles in the vapour state would be

Discussion

31.	what is radius of Nth orbit?
Answer» what is radius of Nth orbit?

Discussion

32.	How many liters of air (air is 21% oxygen) are required for the combustion of 6.75 L of CH4? (Assume air and CH4 are at the same T and P)
Answer» How many liters of air (air is 21% oxygen) are required for the combustion of 6.75 L of CH₄? (Assume air and CH₄ are at the same T and P)

Discussion

33.	Here 'Z' is
Answer» Here 'Z' is

33.

Here 'Z' is

Answer»

Here 'Z' is

Discussion

34.	can be obtained by:
Answer» can be obtained by:

Discussion

35.	The compound 2-Methylbut-2-ene on reaction with NaIO4 in the presence of KMnO4 give
Answer» The compound 2-Methylbut-2-ene on reaction with NaIO4 in the presence of KMnO4 give

Discussion

36.	The presence of peroxide, learning to anti-Markovnikov addition on unsymmetrical alkene involves
Answer» The presence of peroxide, learning to anti-Markovnikov addition on unsymmetrical alkene involves

Discussion

37.	How many moles of KOH are required per mole of R–NH2 in the balanced reaction? R–NH2+CHCl3+KOH→R−⊕N⊖C+KCl+H2O
Answer» How many moles of $K O H$ are required per mole of $R - N H_{2}$ in the balanced reaction? $R - N H_{2} + C H C l_{3} + K O H \to R - \oplus N ⊖ C + K C l + H_{2} O$

Discussion

38.	Monochromatic radiation is emitted when the electron in hydrogen atom jumps from the first excited state to the ground state. It is incident on a photosensitive material. The stopping potential is measured to be 3.57 V. The threshold frequency of the material is
Answer» Monochromatic radiation is emitted when the electron in hydrogen atom jumps from the first excited state to the ground state. It is incident on a photosensitive material. The stopping potential is measured to be $3.57$ $V$ . The threshold frequency of the material is

Discussion

39.	Which of the following property displays progressive increase down a group in the Bohr's periodic table
Answer» Which of the following property displays progressive increase down a group in the Bohr's periodic table

Discussion

40.	what is beats and stationary and interference?
Answer» what is beats and stationary and interference?

Discussion

41.	A container has two partitions. The left partition has a solution of potassium ferrocyanide of concentration 0.04 N and the right partition has pure solvent. Both are filled up to the same level. At a particular level, the pressure due to a solvent in the solution is P1=2.5 atm and at the same level, the pressure due to the pure solvent on the right is P2. What is the value of P2 (in atm)? (temperature is 300 K and take R = 0.082 atmL/mol/K)
Answer» A container has two partitions. The left partition has a solution of potassium ferrocyanide of concentration 0.04 N and the right partition has pure solvent. Both are filled up to the same level. At a particular level, the pressure due to a solvent in the solution is $P_{1} = 2.5 a t m$ and at the same level, the pressure due to the pure solvent on the right is $P_{2}$ . What is the value of $P_{2}$ (in atm)? (temperature is 300 K and take R = 0.082 atmL/mol/K)

Discussion

42.	HOW TO FIND OXIDATION NUMBER OF AN ELEMENT AND DIFFERENCE BETWEEN VALENCY AND OXIDATION NUMBER ?
Answer» HOW TO FIND OXIDATION NUMBER OF AN ELEMENT AND DIFFERENCE BETWEEN VALENCY AND OXIDATION NUMBER ?

Discussion

43.	43.Calculate th amt of co2 that could be produced when (1) 1 mol of carbon is burnt in air (2) 1 mol of carbon is burnt in 16g of dioxygen (3) 2 mol of carbon are burnt in 16g if dioxygen
Answer» 43.Calculate th amt of co2 that could be produced when (1) 1 mol of carbon is burnt in air (2) 1 mol of carbon is burnt in 16g of dioxygen (3) 2 mol of carbon are burnt in 16g if dioxygen

Discussion

44.

The unbalanced chemical reactions given in List I show missing reagent or condition (?) which are provided in List II. Match List I with List II and select the correct answer using the code given below the lists : List I List IIP. PbO2+H2SO4?→PbSO4+O2+other product1. NOQ. Na2S2O3+H2O?→NaHSO4+other product2. I2R. N2H4?→N2+other product3. WarmS. XeF2?→Xe+ other product4.Cl2Codes P Q R S(A) 4 2 3 1 (B) 3 2 1 4(C) 1 4 2 3 (D) 3 4 2 1

Answer»

The unbalanced chemical reactions given in List I show missing reagent or condition (?) which are provided in List II. Match List I with List II and select the correct answer using the code given below the lists :

	List I		List II
P.	$P b O_{2} + H_{2} S O_{4} ? \to P b S O_{4} + O_{2} + other product$	1.	$N O$
Q.	$N a_{2} S_{2} O_{3} + H_{2} O ? \to N a H S O_{4} + other product$	2.	$I_{2}$
R.	$N_{2} H_{4} ? \to N_{2} + other product$	3.	$Warm$
S.	$X e F_{2} ? \to X e + other product$	4.	$C l_{2}$

Codes

	P	Q	R	S
(A)	4	2	3	1
(B)	3	2	1	4
(C)	1	4	2	3
(D)	3	4	2	1

Discussion

45.	Which of the following alcohols reacts most readily with Lucas reagent?
Answer» Which of the following alcohols reacts most readily with Lucas reagent?

Discussion

46.	A polypeptide on complete hydrolysis gives three amino acids.How many sequences are possible for that polypeptide?(1) 1(2) 3(3) 6(4)
Answer» A polypeptide on complete hydrolysis gives three amino acids.How many sequences are possible for that polypeptide?(1) 1(2) 3(3) 6(4)

Discussion

47.	Electrolysis of dilute aqueous NaCl solution was carried out by passing 10 mA current. The time required ( in seconds) to liberate 0.01 mole of H2 gas at the cathode is x×104 s. Find the value of x. (1F=96500 C mol−1).
Answer» Electrolysis of dilute aqueous $N a C l$ solution was carried out by passing $10 mA$ current. The time required ( in seconds) to liberate 0.01 mole of $H_{2}$ gas at the cathode is $x \times 10^{4} s$ . Find the value of $x$ . $(1 F = 96500 {C mol}^{- 1})$ .

Discussion

48.	Which of the following is a hydrophilic sol?
Answer» Which of the following is a hydrophilic sol?

Discussion

49.	Which of the following is true for a substance that is oxidized in a chemical reaction–oxygen is added to it, hydrogen is removed from it, or both are true?
Answer» Which of the following is true for a substance that is oxidized in a chemical reaction–oxygen is added to it, hydrogen is removed from it, or both are true?

Discussion

50.	35.A carnot engine whose sink is at 300 Kelvin as an efficiency of 40% by how much should the temperature of source be increased to as to increase its efficiency by 50% of original efficiency. 250 degree Celsius 250 Kelvin
Answer» 35.A carnot engine whose sink is at 300 Kelvin as an efficiency of 40% by how much should the temperature of source be increased to as to increase its efficiency by 50% of original efficiency. 250 degree Celsius 250 Kelvin

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Which of the following halides easily undergoes hydrolysis?

In any period, the valency of an element

59 Explain the mechanism of azo coupling reaction between aniline and benzene diazonium salt and the major product.

Which of the following is in lonic Equilibrium?

NO2 can be obtained from

4. Under low pressure, minimum deviation from idealgas behaviour is expected from(1) NH3(2) SO2(3) N2(4) СО,

Mechanism for preparation of alkene from vicinal dihalide

Which of the following compounds are related as chain isomers ?

15. The oxides of certain hypothetical element contain 27.28%, 42.86%, 52.94%, of oxygen . What is the ratio of the valencies of the element in the three oxides ?

8.Values of first four ionisation potential of an element are 68,370,400,485. It belongs to which electronic configuration - 1. 1s2,2s1 2. 1s2,2s2 2p1 3. 1s2,2s2 2p6,3s1

how can a charged body have potential due to itself?

How will you differentiate between an alcohol and a carboxylic acid?

In Millikan's oil drop experiment, why do only the electrons stick to the oil drop and not the cations formed?

40. Which of the following chemical equations is not balanced? (1) 3Fe + 4H_2O ----> Fe_3O_4 + 4H_2O (2) 4NH_3 + 8O_2 ---> 4NO + 6H_2O (3) 4Na + O_2 ----> 2Na_2O (4) 2FeCl_3 + SO_2 + 2H_2O -----> 2FeCl_2 + 2 HCl + H_2SO_4

The degree of dissociation of PCl5(α) obeying the equilibrium, PCl5(g) ⇌PCl3(g) + Cl2(g) , is approximately related to the pressure at equilibrium by:

The compound X(C5H8) reacts with ammonical AgNO3 to give a white precipitate and reacts with excess of KMnO4 to give the acid (CH3)2CH–COOH. Therefore X is

Which among the following is not a π bonded orgtanometallic compound ?

Question 1Why should a magnesium ribbon be cleaned before it is burnt in air?

Match the following:Oxide Nature(a) CO(i) Basic(b) BaO(ii) Neutral(c) Al2O3(iii) Acidic(d) Cl2O7(iv) AmphotericWhich of the following is correct?

Which of the following configurations represent atoms of the elements having the highest second ionization energy?

What is an electron? And what are superconductors?

Among the following ions which has the largest ionic radius in aqueous phase?

Newland arranged elements in increasing order of atomic weights and noted that every eighth element had properties similar to:

Enthalpy of combustion of carbon, hydrogen and C3H8 are x1,x2 and x3 mol−1 respectively. Estimate the enthalpy of formation of C3H8

Total volume of atoms present in a face centred cubic unit cell of a metal is (r = radius of atom).

Compounds A and B having molar mass 100 g mol−1&amp; 70 g mol−1 respectively form an ideal solution at 373 K.At 373 K, the vapour pressures of the two liquids are 90 kPa and 45 kPa respectively.What will be the vapour pressure of a mixture of 25 g of A and 35 g of B at 373 K?

Which of the following properties is NOT exhibited by metallic solids?

77 If the vant Hoff factor and degree of dissociation of Al2(SO4)3 are i and alpha then show that i=1+4alpha.

ntwhat is primary,secondary and tertiary Hydrogenn

Two liquid having vapour pressure P1 note and P2 note in pure state in the ratio of 2:1 are mixed in the molar ratio of 1:2.The ratio of their moles in the vapour state would be

what is radius of Nth orbit?

How many liters of air (air is 21% oxygen) are required for the combustion of 6.75 L of CH4? (Assume air and CH4 are at the same T and P)

Here 'Z' is

can be obtained by:

The compound 2-Methylbut-2-ene on reaction with NaIO4 in the presence of KMnO4 give

The presence of peroxide, learning to anti-Markovnikov addition on unsymmetrical alkene involves

How many moles of KOH are required per mole of R–NH2 in the balanced reaction? R–NH2+CHCl3+KOH→R−⊕N⊖C+KCl+H2O

Monochromatic radiation is emitted when the electron in hydrogen atom jumps from the first excited state to the ground state. It is incident on a photosensitive material. The stopping potential is measured to be 3.57 V. The threshold frequency of the material is

Which of the following property displays progressive increase down a group in the Bohr's periodic table

what is beats and stationary and interference?

HOW TO FIND OXIDATION NUMBER OF AN ELEMENT AND DIFFERENCE BETWEEN VALENCY AND OXIDATION NUMBER ?

43.Calculate th amt of co2 that could be produced when (1) 1 mol of carbon is burnt in air (2) 1 mol of carbon is burnt in 16g of dioxygen (3) 2 mol of carbon are burnt in 16g if dioxygen

Which of the following alcohols reacts most readily with Lucas reagent?

A polypeptide on complete hydrolysis gives three amino acids.How many sequences are possible for that polypeptide?(1) 1(2) 3(3) 6(4)

Electrolysis of dilute aqueous NaCl solution was carried out by passing 10 mA current. The time required ( in seconds) to liberate 0.01 mole of H2 gas at the cathode is x×104 s. Find the value of x. (1F=96500 C mol−1).

Which of the following is a hydrophilic sol?

Which of the following is true for a substance that is oxidized in a chemical reaction–oxygen is added to it, hydrogen is removed from it, or both are true?

35.A carnot engine whose sink is at 300 Kelvin as an efficiency of 40% by how much should the temperature of source be increased to as to increase its efficiency by 50% of original efficiency. 250 degree Celsius 250 Kelvin

Compounds A and B having molar mass 100 g mol−1& 70 g mol−1 respectively form an ideal solution at 373 K.At 373 K, the vapour pressures of the two liquids are 90 kPa and 45 kPa respectively.What will be the vapour pressure of a mixture of 25 g of A and 35 g of B at 373 K?