46295 + Interview Questions in Chemistry

1.	which among the following has the maximum number of atoms? 1) 50g f CaCO_3 2) 49g of H_2SO_4 3)16g of CH_4 4) 18g of H_2O
Answer» which among the following has the maximum number of atoms? 1) 50g f CaCO_3 2) 49g of H_2SO_4 3)16g of CH_4 4) 18g of H_2O

Discussion

2.	An amount of 100kW of heat is transferred through a wall in steady state. One side off the wall is maintained at 127oC and the other side at 27oC The entropy generated (in W/K) due to the heal transfer through the wall is 83.33
Answer» An amount of $100 k W$ of heat is transferred through a wall in steady state. One side off the wall is maintained at $127^{o} C$ and the other side at $27^{o} C$ The entropy generated (in $W / K$ ) due to the heal transfer through the wall is 83.33

Discussion

3.	The pair that has same hybridization is
Answer» The pair that has same hybridization is

Discussion

4.	At 298 K, Kp for reaction N2O4(g)⇌2NO2(g) is 0.98. Predict whether the reaction is spontaneous or not.
Answer» At 298 K, $K_{p}$ for reaction $N_{2} O_{4} (g) ⇌ 2 N O_{2} (g)$ is 0.98. Predict whether the reaction is spontaneous or not.

Discussion

5.	Which among the following is a π acceptor ligand? ___
Answer» Which among the following is a $π$ acceptor ligand? ___

Discussion

6.	23.Molarity of 200ml of 18.25N of NaOH will be 1)32.5M 2)91.25M 3)2.38M 4)22.8M
Answer» 23.Molarity of 200ml of 18.25N of NaOH will be 1)32.5M 2)91.25M 3)2.38M 4)22.8M

Discussion

7.	The difference between bond orders of CO and NO+isx2where x is (Round off to the Nearest Integer)
Answer» The difference between bond orders of $C O$ and $N O^{+} is \frac{x}{2}$ where x is (Round off to the Nearest Integer)

Discussion

8.	QUESTION 2.24 Based on solute - solvent interactions, arrange the below given in order of increasing solubility in n - octane and explain. Cyclohexane, KCl, CH3OH, CH3CN
Answer» QUESTION 2.24 Based on solute - solvent interactions, arrange the below given in order of increasing solubility in n - octane and explain. Cyclohexane, KCl, $C H_{3} O H$ , $C H_{3} C N$

8.

QUESTION 2.24 Based on solute - solvent interactions, arrange the below given in order of increasing solubility in n - octane and explain. Cyclohexane, KCl, CH3OH, CH3CN

Answer»

QUESTION 2.24

Based on solute - solvent interactions, arrange the below given in order of increasing solubility in n - octane and explain.
Cyclohexane, KCl, $C H_{3} O H$ , $C H_{3} C N$

Discussion

9.	Addition of bromine to 1, 3-butadiene gives
Answer» Addition of bromine to 1, 3-butadiene gives

Discussion

10.	Which of the following aldehydes does not form iodoform on heating with iodine and alkali a) pyruvic aldehyde b)ICH2CHO c)propionaldehyde d) 2-Hydroxypropanal
Answer» Which of the following aldehydes does not form iodoform on heating with iodine and alkali a) pyruvic aldehyde b)ICH2CHO c)propionaldehyde d) 2-Hydroxypropanal

Discussion

11.	what is the difference between equillibrium constant and reaction quotient.Why do we need reaction quotient when we already have equillibrium constant??
Answer» what is the difference between equillibrium constant and reaction quotient.Why do we need reaction quotient when we already have equillibrium constant??

Discussion

12.	Butyric acid is an organic compound containing only C, H and O and is a component of rancid butter. If 0.44 g of butyric acid is burnt in excess oxygen, it yields 0.88 g of CO2 and 0.36 g of water as the only products. The empirical formula of butyric acid is:
Answer» Butyric acid is an organic compound containing only C, H and O and is a component of rancid butter. If 0.44 g of butyric acid is burnt in excess oxygen, it yields 0.88 g of $C O_{2}$ and 0.36 g of water as the only products. The empirical formula of butyric acid is:

Discussion

13.	An organic compound X on treatment with pyridinium chlorochromate (PCC) in CH2Cl2 gives compound Y. Compound Y reacts with I2/NaOH to form iodoform. The compound X is:
Answer» An organic compound $X$ on treatment with pyridinium chlorochromate (PCC) in $C H_{2} C l_{2}$ gives compound $Y .$ Compound $Y$ reacts with $I_{2} / N a O H$ to form iodoform. The compound $X$ is:

Discussion

14.	A piston filled with 0.04 mole of an ideal gas expands reversibly from 50.0 L to 375 mL at a constant temperature of 37.0∘C. As it does so, it absorbs 208 J of heat energy. The values of q and W for the process will be (R = 8.314 J/mol K, ln 7.5 = 2.01)
Answer» A piston filled with 0.04 mole of an ideal gas expands reversibly from 50.0 L to 375 mL at a constant temperature of ${37.0}^{\circ} C$ . As it does so, it absorbs 208 J of heat energy. The values of q and W for the process will be (R = 8.314 J/mol K, ln 7.5 = 2.01)

Discussion

15.	Packing efficiency signifies what?
Answer» Packing efficiency signifies what?

Discussion

16.	Calculate the number of moles in 31.9 g of hydrated copper sulpate ?
Answer» Calculate the number of moles in 31.9 g of hydrated copper sulpate ?

Discussion

17.	Which of the following will go by α− elimination reaction mechanism?
Answer» Which of the following will go by $α -$ elimination reaction mechanism?

Discussion

18.	volume at NTP of oxygen req. to completely burn 1kg of coa
Answer» volume at NTP of oxygen req. to completely burn 1kg of coa

Discussion

19.	27. How Ni(Cl)4 is a high spin complex as there is no involvement of outer d orbital.
Answer» 27. How Ni(Cl)4 is a high spin complex as there is no involvement of outer d orbital.

Discussion

20.	Four pairs of compounds are given below. In each pair, one is chiral while the other is achiral. Identify in each pair which is chiral. Choose the from the options given.
Answer» Four pairs of compounds are given below. In each pair, one is chiral while the other is achiral. Identify in each pair which is chiral. Choose the from the options given.

20.

Four pairs of compounds are given below. In each pair, one is chiral while the other is achiral. Identify in each pair which is chiral. Choose the from the options given.

Answer»

Four pairs of compounds are given below. In each pair, one is chiral while the other is achiral. Identify in each pair which is chiral. Choose the from the options given.

Discussion

21.	ntThe drain cleaner , Drainex contains small beats of aluminium which react with caustic soda to produce dihydrogen . What volume of dihydrogen at 293 k and 1 bar will be released when 0.15 g aluminium reacts ?n
Answer» ntThe drain cleaner , Drainex contains small beats of aluminium which react with caustic soda to produce dihydrogen . What volume of dihydrogen at 293 k and 1 bar will be released when 0.15 g aluminium reacts ?n

Discussion

22.	If 10^9 electrons moves out of a body to another body every second how much time is required to get a total charge of 1C on the other body
Answer» If 10^9 electrons moves out of a body to another body every second how much time is required to get a total charge of 1C on the other body

Discussion

23.	Why the ccp lattice has 4 oxide ions per unit cell
Answer» Why the ccp lattice has 4 oxide ions per unit cell

Discussion

24.	Benzeneand toluene form ideal solution over the entire range of composition.Thevapour pressure of pure benzene and naphthalene at 300 Kare 50.71mm Hg and32.06 mm Hg respectively. Calculate the mole fraction of benzenein vapourphase if 80 g of benzene is mixed with 100 g of toluene.
Answer» Benzene and toluene form ideal solution over the entire range of composition. The vapour pressure of pure benzene and naphthalene at 300 Kare 50.71 mm Hg and 32.06 mm Hg respectively. Calculate the mole fraction of benzene in vapour phase if 80 g of benzene is mixed with 100 g of toluene.

24.

Benzeneand toluene form ideal solution over the entire range of composition.Thevapour pressure of pure benzene and naphthalene at 300 Kare 50.71mm Hg and32.06 mm Hg respectively. Calculate the mole fraction of benzenein vapourphase if 80 g of benzene is mixed with 100 g of toluene.

Answer»

Benzene
and toluene form ideal solution over the entire range of composition.

The
vapour pressure of pure benzene and naphthalene at 300 Kare 50.71

mm Hg and
32.06 mm Hg respectively. Calculate the mole fraction of benzene

in vapour
phase if 80 g of benzene is mixed with 100 g of toluene.

Discussion

25.

Match Column - I (metal) with Column - II (ores) and select the correct answer by choosing an appropriate option :- Column - I Column - II A. Mn p. Magnetite B. Zn q. Pyrolusite C. Fe r. Calamine D. Hg s. Cinnabar

Answer»

Match Column - I (metal) with Column - II (ores) and select the correct answer by choosing an appropriate option :-

Column - I	Column - II
A. Mn	p. Magnetite
B. Zn	q. Pyrolusite
C. Fe	r. Calamine
D. Hg	s. Cinnabar

Discussion

26.	44. Approx atomic weight of an element is 26.89. If it's equivalent weight is 8.9. The exact atomic weight of an element would be? (1) 26.89 (2) 8.9 (3) 17.8 (4) 26.7
Answer» 44. Approx atomic weight of an element is 26.89. If it's equivalent weight is 8.9. The exact atomic weight of an element would be? (1) 26.89 (2) 8.9 (3) 17.8 (4) 26.7

Discussion

27.	The half life of a first order reaction is equal to:
Answer» The half life of a first order reaction is equal to:

Discussion

28.	If 'HOX' is coded as 'FKR' then what will be the code for 'IPY' ?
Answer» If 'HOX' is coded as 'FKR' then what will be the code for 'IPY' ?

Discussion

29.	For the process H2O (l)⇌H2O (g) (1 atm, 373K), the correct set of thermodynamic parameters is
Answer» For the process $H_{2} O (l) ⇌ H_{2} O (g) (1 a t m, 373 K),$ the correct set of thermodynamic parameters is

Discussion

30.	An element (atomic mass =100gm/mol) having BCC structure has unit cell edge 400pm. The density of element is
Answer» An element (atomic mass =100gm/mol) having BCC structure has unit cell edge 400pm. The density of element is

Discussion

31.	Eight identical spherical mercury drops charged toa potential of 20 V each are coalesced into a singlespherical drop(1) The internal energy of the system remains thesamebs(2) The new potential of the drop is 80 V(3) Internal energy of the system decreases(4) The potential remains the same i.e. 20VOTE 5 PRO
Answer» Eight identical spherical mercury drops charged toa potential of 20 V each are coalesced into a singlespherical drop(1) The internal energy of the system remains thesamebs(2) The new potential of the drop is 80 V(3) Internal energy of the system decreases(4) The potential remains the same i.e. 20VOTE 5 PRO

Discussion

32.	Among the following compounds highest lattice energy is present in:
Answer» Among the following compounds highest lattice energy is present in:

Discussion

33.	Which of the following compound(s)cannot undergo self-aldol condensation in the presence of cold dilute alkali?
Answer» Which of the following compound(s)cannot undergo self-aldol condensation in the presence of cold dilute alkali?

Discussion

34.	Among the following, the least stable canonical form is:
Answer» Among the following, the least stable canonical form is:

Discussion

35.	If hydrogen and chlorine combine with each other to form HCl and hydrogen and sodium combine with each other to form NaH then in what ratio by masses would sodium and chlorine combine with each other?
Answer» If hydrogen and chlorine combine with each other to form HCl and hydrogen and sodium combine with each other to form NaH then in what ratio by masses would sodium and chlorine combine with each other?

Discussion

36.	The enthalpy of vaporisation of a liquid is 30 kJ/mol and the entropy of vaporisation is 75 Jmol−1K−1. What is the boiling point of the liquid at 1 atm?
Answer» The enthalpy of vaporisation of a liquid is $30 k J / m o l$ and the entropy of vaporisation is $75 J m o l^{- 1} K^{- 1}$ . What is the boiling point of the liquid at $1 a t m$ ?

Discussion

37.	A spiral spring of sufficient stiffness is hanging vertically from the ceiling. Initially, it is in its natural length. A body of mass m is attached to its lower end and is gradually lowered from this position, till it attains equilibrium. This stretches the spring by a length d. If the same body, attached to the same spring in the same initial position, is allowed to fall suddenly, what would be the maximum elongation of the spring in this case ?(Neglect mass of the spring.)
Answer» A spiral spring of sufficient stiffness is hanging vertically from the ceiling. Initially, it is in its natural length. A body of mass $m$ is attached to its lower end and is gradually lowered from this position, till it attains equilibrium. This stretches the spring by a length $d$ . If the same body, attached to the same spring in the same initial position, is allowed to fall suddenly, what would be the maximum elongation of the spring in this case ? (Neglect mass of the spring.)

Discussion

38.	\|x-2\|+\|x+3\|
Answer» \|x-2\|+\|x+3\|

Discussion

39.	Arrange the following in increasing order of acidic strengthNa2O, Cl2O. NO2, N2O,P2O5
Answer» Arrange the following in increasing order of acidic strength Na2O, Cl2O. NO2, N2O,P2O5

Discussion

40.	explain oxidation numbdr method by acidic medium
Answer» explain oxidation numbdr method by acidic medium

Discussion

41.	in hcp arrangement the number of nearest neighbours is? how?
Answer» in hcp arrangement the number of nearest neighbours is? how?

Discussion

42.	Which one of the following oxide is neutral in nature?
Answer» Which one of the following oxide is neutral in nature?

Discussion

43.	In the electrolysis of aqueous solution of copper (2) chloride the mass of cathode electrode is increased by 3.2 by a current .if anode is cu then at anod?
Answer» In the electrolysis of aqueous solution of copper (2) chloride the mass of cathode electrode is increased by 3.2 by a current .if anode is cu then at anod?

Discussion

44.	Determine the total number of neutrons in three isotopes of hydrogen.
Answer» Determine the total number of neutrons in three isotopes of hydrogen.

Discussion

45.	Discuss why pesticides are used in very accurate concentration and in very appropriate manner.
Answer» Discuss why pesticides are used in very accurate concentration and in very appropriate manner.

Discussion

46.	100 ml of 3 mol h2so4 reacts with 100 ml of 3 mol naoh. enthalpy of neutralisation of reaction will be 1) -57.1 kJ/ mol 2) -2 × 57.1 kJ 3) -0.3×57.1 kJ 4) -3×57.1 k
Answer» 100 ml of 3 mol h2so4 reacts with 100 ml of 3 mol naoh. enthalpy of neutralisation of reaction will be 1) -57.1 kJ/ mol 2) -2 × 57.1 kJ 3) -0.3×57.1 kJ 4) -3×57.1 k

Discussion

47.	74.5 g of metal chloride contains 35.5g of chlorine. What is the equivalent weight of metal??
Answer» 74.5 g of metal chloride contains 35.5g of chlorine. What is the equivalent weight of metal??

Discussion

48.	23. If radius of octahedral voids is "r" &atomic radius of atoms asssuming cubical close packing is "R" then relation between "r" &"R" is ?
Answer» 23. If radius of octahedral voids is "r" &atomic radius of atoms asssuming cubical close packing is "R" then relation between "r" &"R" is ?

Discussion

49.	What is the difference between molecular mass and atomic mass?
Answer» What is the difference between molecular mass and atomic mass?

Discussion

50.	Draw the chain isomers of hexane (C6H12).
Answer» Draw the chain isomers of hexane $(C_{6} H_{12})$ .

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

which among the following has the maximum number of atoms? 1) 50g f CaCO_3 2) 49g of H_2SO_4 3)16g of CH_4 4) 18g of H_2O

An amount of 100kW of heat is transferred through a wall in steady state. One side off the wall is maintained at 127oC and the other side at 27oC The entropy generated (in W/K) due to the heal transfer through the wall is 83.33

The pair that has same hybridization is

At 298 K, Kp for reaction N2O4(g)⇌2NO2(g) is 0.98. Predict whether the reaction is spontaneous or not.

Which among the following is a π acceptor ligand? ___

23.Molarity of 200ml of 18.25N of NaOH will be 1)32.5M 2)91.25M 3)2.38M 4)22.8M

The difference between bond orders of CO and NO+isx2where x is (Round off to the Nearest Integer)

QUESTION 2.24 Based on solute - solvent interactions, arrange the below given in order of increasing solubility in n - octane and explain. Cyclohexane, KCl, CH3OH, CH3CN

Addition of bromine to 1, 3-butadiene gives

Which of the following aldehydes does not form iodoform on heating with iodine and alkali a) pyruvic aldehyde b)ICH2CHO c)propionaldehyde d) 2-Hydroxypropanal

what is the difference between equillibrium constant and reaction quotient.Why do we need reaction quotient when we already have equillibrium constant??

Butyric acid is an organic compound containing only C, H and O and is a component of rancid butter. If 0.44 g of butyric acid is burnt in excess oxygen, it yields 0.88 g of CO2 and 0.36 g of water as the only products. The empirical formula of butyric acid is:

An organic compound X on treatment with pyridinium chlorochromate (PCC) in CH2Cl2 gives compound Y. Compound Y reacts with I2/NaOH to form iodoform. The compound X is:

A piston filled with 0.04 mole of an ideal gas expands reversibly from 50.0 L to 375 mL at a constant temperature of 37.0∘C. As it does so, it absorbs 208 J of heat energy. The values of q and W for the process will be (R = 8.314 J/mol K, ln 7.5 = 2.01)

Packing efficiency signifies what?

Calculate the number of moles in 31.9 g of hydrated copper sulpate ?

Which of the following will go by α− elimination reaction mechanism?

volume at NTP of oxygen req. to completely burn 1kg of coa

27. How Ni(Cl)4 is a high spin complex as there is no involvement of outer d orbital.

Four pairs of compounds are given below. In each pair, one is chiral while the other is achiral. Identify in each pair which is chiral. Choose the from the options given.

ntThe drain cleaner , Drainex contains small beats of aluminium which react with caustic soda to produce dihydrogen . What volume of dihydrogen at 293 k and 1 bar will be released when 0.15 g aluminium reacts ?n

If 10^9 electrons moves out of a body to another body every second how much time is required to get a total charge of 1C on the other body

Why the ccp lattice has 4 oxide ions per unit cell

Benzeneand toluene form ideal solution over the entire range of composition.Thevapour pressure of pure benzene and naphthalene at 300 Kare 50.71mm Hg and32.06 mm Hg respectively. Calculate the mole fraction of benzenein vapourphase if 80 g of benzene is mixed with 100 g of toluene.

Match Column - I (metal) with Column - II (ores) and select the correct answer by choosing an appropriate option :- Column - I Column - II A. Mn p. Magnetite B. Zn q. Pyrolusite C. Fe r. Calamine D. Hg s. Cinnabar

44. Approx atomic weight of an element is 26.89. If it's equivalent weight is 8.9. The exact atomic weight of an element would be? (1) 26.89 (2) 8.9 (3) 17.8 (4) 26.7

The half life of a first order reaction is equal to:

If 'HOX' is coded as 'FKR' then what will be the code for 'IPY' ?

For the process H2O (l)⇌H2O (g) (1 atm, 373K), the correct set of thermodynamic parameters is

An element (atomic mass =100gm/mol) having BCC structure has unit cell edge 400pm. The density of element is

Among the following compounds highest lattice energy is present in:

Which of the following compound(s)cannot undergo self-aldol condensation in the presence of cold dilute alkali?

Among the following, the least stable canonical form is:

If hydrogen and chlorine combine with each other to form HCl and hydrogen and sodium combine with each other to form NaH then in what ratio by masses would sodium and chlorine combine with each other?

The enthalpy of vaporisation of a liquid is 30 kJ/mol and the entropy of vaporisation is 75 Jmol−1K−1. What is the boiling point of the liquid at 1 atm?

|x-2|+|x+3|

Arrange the following in increasing order of acidic strengthNa2O, Cl2O. NO2, N2O,P2O5

explain oxidation numbdr method by acidic medium

in hcp arrangement the number of nearest neighbours is? how?

Which one of the following oxide is neutral in nature?

In the electrolysis of aqueous solution of copper (2) chloride the mass of cathode electrode is increased by 3.2 by a current .if anode is cu then at anod?

Determine the total number of neutrons in three isotopes of hydrogen.

Discuss why pesticides are used in very accurate concentration and in very appropriate manner.

100 ml of 3 mol h2so4 reacts with 100 ml of 3 mol naoh. enthalpy of neutralisation of reaction will be 1) -57.1 kJ/ mol 2) -2 × 57.1 kJ 3) -0.3×57.1 kJ 4) -3×57.1 k

74.5 g of metal chloride contains 35.5g of chlorine. What is the equivalent weight of metal??

23. If radius of octahedral voids is "r" &atomic radius of atoms asssuming cubical close packing is "R" then relation between "r" &"R" is ?

What is the difference between molecular mass and atomic mass?

Draw the chain isomers of hexane (C6H12).