46295 + Interview Questions in Chemistry

1.	For zero order reaction, linear plot was obtained for [A] vs t, the slope of the line is equal to:
Answer» For zero order reaction, linear plot was obtained for [A] vs t, the slope of the line is equal to:

Discussion

2.	In which pair of compounds, the first one is more stable than second?
Answer» In which pair of compounds, the first one is more stable than second?

Discussion

3.	The volume of a drop of water is 0.05 mL and the density of water is 1.0 g/mL. How many water molecules are present in a drop of water?
Answer» The volume of a drop of water is $0.05 mL$ and the density of water is $1.0 g/mL$ . How many water molecules are present in a drop of water?

Discussion

4.	Identify the correct statement.
Answer» Identify the correct statement.

Discussion

5.	XeF6 on complete hydrolysis gives:
Answer» $X e F_{6}$ on complete hydrolysis gives:

Discussion

6.	Identify the alloy containing a non-metal as a constituent in it
Answer» Identify the alloy containing a non-metal as a constituent in it

Discussion

7.	Which of the following is not anodic reaction in an electrochemical series?
Answer» Which of the following is not anodic reaction in an electrochemical series?

Discussion

8.	In body centered cubic lattice given below, the three distance AB, AC and AA' are:
Answer» In body centered cubic lattice given below, the three distance AB, AC and AA' are:

8.

In body centered cubic lattice given below, the three distance AB, AC and AA' are:

Answer»

In body centered cubic lattice given below, the three distance AB, AC and AA' are:

Discussion

9.	Which of the following has the smallest size
Answer» Which of the following has the smallest size

9.

Which of the following has the smallest size

Answer»

Which of the following has the smallest size

Discussion

10.	The degree of ionization of a 0.1M bromoacetic acid solution is 0.132. Calculate the pH of the solution and the pKa of bromoacetic acid.
Answer» The degree of ionization of a 0.1M bromoacetic acid solution is 0.132. Calculate the pH of the solution and the pKa of bromoacetic acid.

Discussion

11.	The major product H given in the reaction sequence is:
Answer» The major product H given in the reaction sequence is:

Discussion

12.	MgSO4 on reaction with NH4OH and Na2HPO4 forms a white crystalline precipitate. What is its formula?
Answer» $M g S O_{4}$ on reaction with $N H_{4} O H$ and $N a_{2} H P O_{4}$ forms a white crystalline precipitate. What is its formula?

Discussion

13.	Among the following compounds, the strongest acid is
Answer» Among the following compounds, the strongest acid is

Discussion

14.	MY and NY3, two nearly insoluble salts, have the same Ksp values of 6.2×10−13 at room temperature. Which statement would be true in regard to MY and NY3?
Answer» $M Y$ and $N Y_{3}$ , two nearly insoluble salts, have the same $K_{s p}$ values of $6.2 \times 10^{- 13}$ at room temperature. Which statement would be true in regard to $M Y$ and $N Y_{3}$ ?

Discussion

15.	The frequency of radiation emitted when the electron falls from n = 4 to n = 1 in a hydrogen atom will be (Given ionization energy of H = 2.18 × 10−18 J atom−1 and h = 6.625 × 10−34Js)
Answer» The frequency of radiation emitted when the electron falls from n = 4 to n = 1 in a hydrogen atom will be (Given ionization energy of $H = 2.18 \times 10^{- 18} J a t o m^{- 1}$ and $h = 6.625 \times 10^{- 34} J s$ )

15.

The frequency of radiation emitted when the electron falls from n = 4 to n = 1 in a hydrogen atom will be (Given ionization energy of H = 2.18 × 10−18 J atom−1 and h = 6.625 × 10−34Js)

Answer»

The frequency of radiation emitted when the electron falls from n = 4 to n = 1 in a hydrogen atom will be

(Given ionization energy of $H = 2.18 \times 10^{- 18} J a t o m^{- 1}$ and $h = 6.625 \times 10^{- 34} J s$ )

Discussion

16.	Predict the correct order of −I strength for the following groups: I.−CH2NH2II.−CH=NHIII.−CN
Answer» Predict the correct order of $- I$ strength for the following groups: $I . - C H_{2} N H_{2} I I . - C H = N H I I I . - C N$

Discussion

17.	How many grams of K2Cr2O7 are present in 1 L of its N10 solution in acid medium?
Answer» How many grams of $K_{2} C r_{2} O_{7}$ are present in 1 L of its $\frac{N}{10}$ solution in acid medium?

Discussion

18.	All common amino acids except one react with cold nitrous acid(HNO2) and evolve nitrogen gas. That amino acid is
Answer» All common amino acids except one react with cold nitrous acid(HNO₂) and evolve nitrogen gas. That amino acid is

18.

All common amino acids except one react with cold nitrous acid(HNO2) and evolve nitrogen gas. That amino acid is

Answer»

All common amino acids except one react with cold nitrous acid(HNO₂) and evolve nitrogen gas.

That amino acid is

Discussion

19.	If 5.85 g of NaCl (molecular weight 58.5) is dissolved in water and the solution is made up to 0.5 litre, the molarity of the solution will be
Answer» If 5.85 g of NaCl (molecular weight 58.5) is dissolved in water and the solution is made up to 0.5 litre, the molarity of the solution will be

Discussion

20.	Which one amongst the following possesses an sp hybridized carbon in its structure
Answer» Which one amongst the following possesses an sp hybridized carbon in its structure

Discussion

21.	The correct structure for the compound 1,2-diethyl-1,8-dimethyl-5-propylcyclooctane is:
Answer» The correct structure for the compound 1,2-diethyl-1,8-dimethyl-5-propylcyclooctane is:

Discussion

22.	Which of the following compound of Xenon has pyramidal geometry?
Answer» Which of the following compound of Xenon has pyramidal geometry?

Discussion

23.	Ionisation energy of He+ is 8.71×10−18 J atom−1. The energy of the first stationary state (n = 1) of Li2+ is:
Answer» Ionisation energy of $H e^{+}$ is $8.71 \times 10^{- 18} J a t o m^{- 1}$ . The energy of the first stationary state (n = 1) of $L i^{2 +}$ is:

Discussion

24.	Q. It can be readily seen that the number of elements in each period is twice the number of atomic orbitals available in the energy level that is being filled. Explain this statement with examples
Answer» Q. It can be readily seen that the number of elements in each period is twice the number of atomic orbitals available in the energy level that is being filled. Explain this statement with examples

Discussion

25.	The molal boiling point constant for water is . When 0.1 mole of sugar is dissolved in 200 ml of water, the solution boils under a pressure of one atmosphere at
Answer» The molal boiling point constant for water is . When 0.1 mole of sugar is dissolved in 200 ml of water, the solution boils under a pressure of one atmosphere at

Discussion

26.	Assertion (A): Use of Chlorofluorocarbons (CFC’s) is hazardous to environment. Reason (R): CFC’s are very reactive, flammable and toxic gases.
Answer» Assertion (A): Use of Chlorofluorocarbons (CFC’s) is hazardous to environment. Reason (R): CFC’s are very reactive, flammable and toxic gases.

Discussion

27.	In a solid 'AB' having the NaCI structure, 'A' atoms occupy the corners of the cubic unit cell. If all the face centred atoms along one of the axis are removed, then the resultant stoichiometry of the solid is:
Answer» In a solid 'AB' having the NaCI structure, 'A' atoms occupy the corners of the cubic unit cell. If all the face centred atoms along one of the axis are removed, then the resultant stoichiometry of the solid is:

Discussion

28.	Hydrogen cannot be obtained by:
Answer» Hydrogen cannot be obtained by:

Discussion

29.	Which group is meta directing group ?
Answer» Which group is meta directing group ?

Discussion

30.	Which of the following is true about potassium?
Answer» Which of the following is true about potassium?

Discussion

31.	Which one is the correct order of acidity?
Answer» Which one is the correct order of acidity?

Discussion

32.	In a monatomic ideal gas the pressure and volume relation follows the equation P6V5= constant. If the gas contains n number of moles, find out amount of heat required to increase the temperature of gas by 5 K.
Answer» In a monatomic ideal gas the pressure and volume relation follows the equation $P^{6} V^{5} =$ constant. If the gas contains $n$ number of moles, find out amount of heat required to increase the temperature of gas by $5 K .$

Discussion

33.	Ionic solid Na+A− crystallizes in rock salt type structure. 2.592g of the ionic solid salt NaA is dissolved in water to make a 2 litre solution. The pH of this solution is 8. If the distance between the cation and the anion is 300pm, calculate the density of the ionic solid (in g/cm3) (Given: pKw=13,pKa[HA]=5,NA=6×1023)
Answer» Ionic solid $N a^{+} A^{-}$ crystallizes in rock salt type structure. $2.592 g$ of the ionic solid salt NaA is dissolved in water to make a 2 litre solution. The pH of this solution is 8. If the distance between the cation and the anion is $300 pm$ , calculate the density of the ionic solid $({in g/cm}^{3})$ (Given: $p K_{w} = 13, p K_{a} [H A] = 5, N_{A} = 6 \times 10^{23})$

Discussion

34.	CCl3−CH=O reacts with chlorobenzene in the presence of sulphuric acid and produces:
Answer» $C C l_{3} - C H = O$ reacts with chlorobenzene in the presence of sulphuric acid and produces:

Discussion

35.	Which of the graphs shown below does not represent the relationship between incident light and the electron ejected from metal surface?
Answer» Which of the graphs shown below does not represent the relationship between incident light and the electron ejected from metal surface?

Discussion

36.	The value of γ on monoatomic, diatomic and triatomic gases is ___, ___ and ___ respectively.
Answer» The value of $γ$ on monoatomic, diatomic and triatomic gases is ___, ___ and ___ respectively.

Discussion

37.	How many atoms of NH3 are present in 4.25 grams of NH3.
Answer» How many atoms of NH₃ are present in 4.25 grams of NH_3.

Discussion

38.	If one mole of a gas (mol.wt-40) occupies a volume of 20litres, under the same conditions of temperature and pressure the volume occupied by 2 moles of gas B (mol.wt=80) is
Answer» If one mole of a gas (mol.wt-40) occupies a volume of 20litres, under the same conditions of temperature and pressure the volume occupied by 2 moles of gas B (mol.wt=80) is

Discussion

39.	How many diastereomeric pair(s) is/are possible for compound [Co(en)2Cl2]+?
Answer» How many diastereomeric pair(s) is/are possible for compound $[C o (e n)_{2} C l_{2}]^{+}$ ?

Discussion

40.	How to know whether a reaction is following Sn1,Sn2,Sn ar,E1,E2 or E1cb mechanism? please mention a way which does have any exceptions.
Answer» How to know whether a reaction is following Sn1,Sn2,Sn ar,E1,E2 or E1cb mechanism? please mention a way which does have any exceptions.

40.

How to know whether a reaction is following Sn1,Sn2,Sn ar,E1,E2 or E1cb mechanism? please mention a way which does have any exceptions.

Answer»

How to know whether a reaction is following Sn1,Sn2,Sn ar,E1,E2 or E1cb mechanism?

please mention a way which does have any exceptions.

Discussion

41.	The graph shown in the figure represents change in the temperature of 5 kg of a substance with time, as it absorbs heat at a constant rate of 42 kJ min−1. The latent heat of vapourization of the substance is:
Answer» The graph shown in the figure represents change in the temperature of $5 k g$ of a substance with time, as it absorbs heat at a constant rate of $42 k J$ $m i n^{- 1}$ . The latent heat of vapourization of the substance is:

41.

The graph shown in the figure represents change in the temperature of 5 kg of a substance with time, as it absorbs heat at a constant rate of 42 kJ min−1. The latent heat of vapourization of the substance is:

Answer»

The graph shown in the figure represents change in the temperature of $5 k g$ of a substance with time, as it absorbs heat at a constant rate of $42 k J$ $m i n^{- 1}$ . The latent heat of vapourization of the substance is:

Discussion

42.	How to calculate magnitude of an electronic for an given charge?
Answer» How to calculate magnitude of an electronic for an given charge?

Discussion

43.	Wilkinson’s catalyst is:
Answer» Wilkinson’s catalyst is:

Discussion

44.	Calculate the concentration of nitric acid in mole per litre in a sample that has a density 1.41g/mL and the mass percentage is 69%.
Answer» Calculate the concentration of nitric acid in mole per litre in a sample that has a density $1.41 g / m L$ and the mass percentage is 69%.

Discussion

45.	What is the difference between fundamental unit and fundamental quantity?
Answer» What is the difference between fundamental unit and fundamental quantity?

Discussion

46.	Q72) Here are some words translated from an artificial language. morpirquat means birdhouse beelmorpir means bluebird beelclak means bluebell Which word could mean "houseguest"?
Answer» Q72) Here are some words translated from an artificial language. morpirquat means birdhouse beelmorpir means bluebird beelclak means bluebell Which word could mean "houseguest"?

46.

Q72) Here are some words translated from an artificial language. morpirquat means birdhouse beelmorpir means bluebird beelclak means bluebell Which word could mean "houseguest"?

Answer»

Q72) Here are some words translated from an artificial language.

morpirquat means birdhouse

beelmorpir means bluebird

beelclak means bluebell

Which word could mean "houseguest"?

Discussion

47.	The standard enthalpy of combustion at 25∘ C of hydrogen, cyclohexene (C6H10) and cyclohexane (C6H12) are -241, -3800 and -3920 KJ/mole respectively. Calculate the heat of hydrogenation of cyclohexene.
Answer» The standard enthalpy of combustion at 25∘ C of hydrogen, cyclohexene (C6H10) and cyclohexane (C6H12) are -241, -3800 and -3920 KJ/mole respectively. Calculate the heat of hydrogenation of cyclohexene.

Discussion

48.	While looking at the sky I randomly asked myself this question and wanted to find an answer to it... Plz help Q- What is the colour of the sun and the sky?
Answer» While looking at the sky I randomly asked myself this question and wanted to find an answer to it... Plz help Q- What is the colour of the sun and the sky?

Discussion

49.	The atomic weights of two elements A and B are 40 and 80 respectively. If x g of A contains y atoms, how many atoms are present in 2x g of B?
Answer» The atomic weights of two elements A and B are 40 and 80 respectively. If x g of A contains y atoms, how many atoms are present in 2x g of B?

Discussion

50.	Which of the following compound will exhibit geometrical isomerism?
Answer» Which of the following compound will exhibit geometrical isomerism?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

For zero order reaction, linear plot was obtained for [A] vs t, the slope of the line is equal to:

In which pair of compounds, the first one is more stable than second?

The volume of a drop of water is 0.05 mL and the density of water is 1.0 g/mL. How many water molecules are present in a drop of water?

Identify the correct statement.

XeF6 on complete hydrolysis gives:

Identify the alloy containing a non-metal as a constituent in it

Which of the following is not anodic reaction in an electrochemical series?

In body centered cubic lattice given below, the three distance AB, AC and AA' are:

Which of the following has the smallest size

The degree of ionization of a 0.1M bromoacetic acid solution is 0.132. Calculate the pH of the solution and the pKa of bromoacetic acid.

The major product H given in the reaction sequence is:

MgSO4 on reaction with NH4OH and Na2HPO4 forms a white crystalline precipitate. What is its formula?

Among the following compounds, the strongest acid is

MY and NY3, two nearly insoluble salts, have the same Ksp values of 6.2×10−13 at room temperature. Which statement would be true in regard to MY and NY3?

The frequency of radiation emitted when the electron falls from n = 4 to n = 1 in a hydrogen atom will be (Given ionization energy of H = 2.18 × 10−18 J atom−1 and h = 6.625 × 10−34Js)

Predict the correct order of −I strength for the following groups: I.−CH2NH2II.−CH=NHIII.−CN

How many grams of K2Cr2O7 are present in 1 L of its N10 solution in acid medium?

All common amino acids except one react with cold nitrous acid(HNO2) and evolve nitrogen gas. That amino acid is

If 5.85 g of NaCl (molecular weight 58.5) is dissolved in water and the solution is made up to 0.5 litre, the molarity of the solution will be

Which one amongst the following possesses an sp hybridized carbon in its structure

The correct structure for the compound 1,2-diethyl-1,8-dimethyl-5-propylcyclooctane is:

Which of the following compound of Xenon has pyramidal geometry?

Ionisation energy of He+ is 8.71×10−18 J atom−1. The energy of the first stationary state (n = 1) of Li2+ is:

Q. It can be readily seen that the number of elements in each period is twice the number of atomic orbitals available in the energy level that is being filled. Explain this statement with examples

The molal boiling point constant for water is . When 0.1 mole of sugar is dissolved in 200 ml of water, the solution boils under a pressure of one atmosphere at

Assertion (A): Use of Chlorofluorocarbons (CFC’s) is hazardous to environment. Reason (R): CFC’s are very reactive, flammable and toxic gases.

In a solid 'AB' having the NaCI structure, 'A' atoms occupy the corners of the cubic unit cell. If all the face centred atoms along one of the axis are removed, then the resultant stoichiometry of the solid is:

Hydrogen cannot be obtained by:

Which group is meta directing group ?

Which of the following is true about potassium?

Which one is the correct order of acidity?

In a monatomic ideal gas the pressure and volume relation follows the equation P6V5= constant. If the gas contains n number of moles, find out amount of heat required to increase the temperature of gas by 5 K.

CCl3−CH=O reacts with chlorobenzene in the presence of sulphuric acid and produces:

Which of the graphs shown below does not represent the relationship between incident light and the electron ejected from metal surface?

The value of γ on monoatomic, diatomic and triatomic gases is ___, ___ and ___ respectively.

How many atoms of NH​​​​​3 are present in 4.25 grams of NH​​​​​3.

If one mole of a gas (mol.wt-40) occupies a volume of 20litres, under the same conditions of temperature and pressure the volume occupied by 2 moles of gas B (mol.wt=80) is

How many diastereomeric pair(s) is/are possible for compound [Co(en)2Cl2]+?

How to know whether a reaction is following Sn1,Sn2,Sn ar,E1,E2 or E1cb mechanism? please mention a way which does have any exceptions.

The graph shown in the figure represents change in the temperature of 5 kg of a substance with time, as it absorbs heat at a constant rate of 42 kJ min−1. The latent heat of vapourization of the substance is:

How to calculate magnitude of an electronic for an given charge?

Wilkinson’s catalyst is:

Calculate the concentration of nitric acid in mole per litre in a sample that has a density 1.41g/mL and the mass percentage is 69%.

What is the difference between fundamental unit and fundamental quantity?

Q72) Here are some words translated from an artificial language. morpirquat means birdhouse beelmorpir means bluebird beelclak means bluebell Which word could mean "houseguest"?

The standard enthalpy of combustion at 25∘ C of hydrogen, cyclohexene (C6H10) and cyclohexane (C6H12) are -241, -3800 and -3920 KJ/mole respectively. Calculate the heat of hydrogenation of cyclohexene.

While looking at the sky I randomly asked myself this question and wanted to find an answer to it... Plz help Q- What is the colour of the sun and the sky?

The atomic weights of two elements A and B are 40 and 80 respectively. If x g of A contains y atoms, how many atoms are present in 2x g of B?

Which of the following compound will exhibit geometrical isomerism?

The value of γ on monoatomic, diatomic and triatomic gases is _, _ and ___ respectively.

How many atoms of NH3 are present in 4.25 grams of NH3.