46295 + Interview Questions in Chemistry

1.	CH_2=CH_2\xrightarrow[{H_3O^+}]{CH_3COOH}A What is A
Answer» CH_2=CH_2\xrightarrow[{H_3O^+}]{CH_3COOH}A What is A

Discussion

2.	Write the unit of equilibrium constant (Kc) for the given reaction. C(s)+12O2(g)→CO2(g)
Answer» Write the unit of equilibrium constant $(K_{c})$ for the given reaction. $C (s) + \frac{1}{2} O_{2} (g) \to C O_{2} (g)$

Discussion

3.	What is the hybridization of cr in (cr(nh3)6) ^3+ also give its orbital diagram.
Answer» What is the hybridization of cr in (cr(nh3)6) ^3+ also give its orbital diagram.

Discussion

4.	What does short hand representation mean?
Answer» What does short hand representation mean?

Discussion

5.	the time t1 and t2 are the time period for 1/3 rd and 2/3rd completion of two first order reaction .if the half lives are in the ratio 10:3 then the ratio of t1 and t2
Answer» the time t1 and t2 are the time period for 1/3 rd and 2/3rd completion of two first order reaction .if the half lives are in the ratio 10:3 then the ratio of t1 and t2

Discussion

6.	What is -R effect?
Answer» What is -R effect?

Discussion

7.	Identify the product D in the following reaction sequence:
Answer» Identify the product D in the following reaction sequence:

Discussion

8.	In Tyndall effect the colloidally suspended particles:
Answer» In Tyndall effect the colloidally suspended particles:

Discussion

9.	the complex compound in which metal is not present in zero oxidation state 1) mn2(co)10;2)ni(co)4 ;3) cr(c6h6)2 ; 4) K\lbrack pt el3(c2h4)
Answer» the complex compound in which metal is not present in zero oxidation state 1) mn2(co)10;2)ni(co)4 ;3) cr(c6h6)2 ; 4) K\lbrack pt el3(c2h4)

Discussion

10.	density of body centred unit cell having edge length 190pm is 8.2 gcm^-3 the mass of atom in the unit cell is
Answer» density of body centred unit cell having edge length 190pm is 8.2 gcm^-3 the mass of atom in the unit cell is

Discussion

11.	In which of the following molecules is the number of lone pairs and bond pairs on central atom not equal?
Answer» In which of the following molecules is the number of lone pairs and bond pairs on central atom not equal?

Discussion

12.	83 The activation energies for the forward and reverse elementary reactions in the system
Answer» 83 The activation energies for the forward and reverse elementary reactions in the system

Discussion

13.	Can nitrogen form 4 bonds.
Answer» Can nitrogen form 4 bonds.

Discussion

14.	Which one in the following is not the resonance structure ofCO2(a) O C = O(b) O-C O\ast(d) O C O+(c) O C-O
Answer» Which one in the following is not the resonance structure ofCO2(a) O C = O(b) O-C O\ast(d) O C O+(c) O C-O

Discussion

15.	35. Amongst the following the total number of compounds soluble in aqueous NaOH are 1)4 2)3 3)1 4)2
Answer» 35. Amongst the following the total number of compounds soluble in aqueous NaOH are 1)4 2)3 3)1 4)2

Discussion

16.	Why are lithium salts commonly hydrated and those of the other alkali metal ions usually anhydrous?
Answer» Why are lithium salts commonly hydrated and those of the other alkali metal ions usually anhydrous?

Discussion

17.	Wash and wear clothes are manufactured using
Answer» Wash and wear clothes are manufactured using

Discussion

18.	What is the meaning of 'delfa' in the equation of I=negative gradiant of V ?
Answer» What is the meaning of 'delfa' in the equation of I=negative gradiant of V ?

Discussion

19.	What is Centre of symmetry in unit cell
Answer» What is Centre of symmetry in unit cell

Discussion

20.	The increasing order (lowest first) for the values of e/m (charge/mass) for
Answer» The increasing order (lowest first) for the values of e/m (charge/mass) for

Discussion

21.	the combustion of butane produces heat by the following reaction :2 C4H10 +13O2 -----8 CO2+10 H2O.DH= -5314 KJ/mol.How many grams of butane must be heated to produce 1x104KJ of heat
Answer» the combustion of butane produces heat by the following reaction :2 C4H10 +13O2 -----8 CO2+10 H2O.DH= -5314 KJ/mol.How many grams of butane must be heated to produce 1x104KJ of heat

Discussion

22.	Is methyl benzene be more reactive than sec methyl benzene towards electrophilic addition reaction
Answer» Is methyl benzene be more reactive than sec methyl benzene towards electrophilic addition reaction

Discussion

23.	Consider the following equilibrium reaction2HI(g) H2 (g)12(g)usThe above equilibrium is established by initiallytaking HI(g) only. If at equilibrium 1 mol each of thespecies is present, then the vapour density ofequilibrium mixture and degree of dissociation atequilibrium are respectively (I-127g/mol
Answer» Consider the following equilibrium reaction2HI(g) H2 (g)12(g)usThe above equilibrium is established by initiallytaking HI(g) only. If at equilibrium 1 mol each of thespecies is present, then the vapour density ofequilibrium mixture and degree of dissociation atequilibrium are respectively (I-127g/mol

Discussion

24.	There is an insect moving on horizontal floor, on which it can only move forward- backward or turn left-right. What is the degrees of freedom of that insect ?
Answer» There is an insect moving on horizontal floor, on which it can only move forward- backward or turn left-right. What is the degrees of freedom of that insect ?

Discussion

25.	The bond order of NO is 2.5 or not ?
Answer» The bond order of NO is 2.5 or not ?

Discussion

26.	The weight of a molecule of the compound C60H122 is
Answer» The weight of a molecule of the compound $C_{60} H_{122}$ is

Discussion

27.	6. The elevation in boiling point of 0.1 m aqueous solution of NaCl, CuSO4 and Na2SO4 are in the ratio
Answer» 6. The elevation in boiling point of 0.1 m aqueous solution of NaCl, CuSO4 and Na2SO4 are in the ratio

Discussion

28.	the pH of a solution by mixing 100ml of 0.2 M CH3COOH with 100ml of 0.2 M NaOH will be(pKa for CH3COOH=4.74 and \log2=0.301
Answer» the pH of a solution by mixing 100ml of 0.2 M CH3COOH with 100ml of 0.2 M NaOH will be(pKa for CH3COOH=4.74 and \log2=0.301

Discussion

29.	What will be the balanced equation for the reaction when carbon dioxide is passed through a cold solution of sodium carbonate?
Answer» What will be the balanced equation for the reaction when carbon dioxide is passed through a cold solution of sodium carbonate?

Discussion

30.	The rate constant of the reaction A→B is 0.8×10−3mol L−1s−1. The concentration of A is 5 M then what is the concentration of B after 20 minutes?
Answer» The rate constant of the reaction $A \to B$ is $0.8 \times 10^{- 3} m o l L^{- 1} s^{- 1}$ . The concentration of $A$ is $5 M$ then what is the concentration of $B$ after $20$ minutes?

Discussion

31.	Discuss tetrahedral and octahedral interstitial voids in a close packed arrangement
Answer» Discuss tetrahedral and octahedral interstitial voids in a close packed arrangement

Discussion

32.	is blood a homogenous mixture ? If yes, then is it present in one phase
Answer» is blood a homogenous mixture ? If yes, then is it present in one phase

Discussion

33.	The perpendicular from A on the side BC of ABC intersects BC at D such that DB=3CD. Prove that 2ABsquare = 2ACsquare+BCsquare.
Answer» The perpendicular from A on the side BC of ABC intersects BC at D such that DB=3CD. Prove that 2ABsquare = 2ACsquare+BCsquare.

Discussion

34.	Which one of the following reactions is a redox reaction?
Answer» Which one of the following reactions is a redox reaction?

Discussion

35.	Find how much wood was used in making acubical pen stand of side 9 cm and thickness 2 cm.
Answer» Find how much wood was used in making acubical pen stand of side 9 cm and thickness 2 cm.

Discussion

36.	In the given reaction5H2O2+xClO2+2OH−→yCl−+zO2+6H2OThe values of x, y and z are:
Answer» In the given reaction $5 H_{2} O_{2} + x C l O_{2} + 2 O H^{-} \to y C l^{-} + z O_{2} + 6 H_{2} O$ The values of x, y and z are:

36.

In the given reaction5H2O2+xClO2+2OH−→yCl−+zO2+6H2OThe values of x, y and z are:

Answer»

In the given reaction

$5 H_{2} O_{2} + x C l O_{2} + 2 O H^{-} \to y C l^{-} + z O_{2} + 6 H_{2} O$

The values of x, y and z are:

Discussion

37.	The process where the anode is an impure metal and the cathode is a pure metal used in refining is called ___
Answer» The process where the anode is an impure metal and the cathode is a pure metal used in refining is called ___

Discussion

38.	The bond between carbon atom (1) and carbon atom (2) in compound N≡C1−CH2=CH2 involves the hybridisation as
Answer» The bond between carbon atom (1) and carbon atom (2) in compound $N \equiv C 1 - C H 2 = C H_{2}$ involves the hybridisation as

Discussion

39.	An exothermic reaction is represented by the graph :
Answer» An exothermic reaction is represented by the graph :

Discussion

40.	43. What fraction of a mole of iron metal will be produced by the passage of 4 amp of current through 1 L of .1M Fe+3 solution for 1 hr . Assume only iron is reduced
Answer» 43. What fraction of a mole of iron metal will be produced by the passage of 4 amp of current through 1 L of .1M Fe+3 solution for 1 hr . Assume only iron is reduced

Discussion

41.	why lattice energy is is inversely proportional to inter ionic distance ?
Answer» why lattice energy is is inversely proportional to inter ionic distance ?

Discussion

42.	A mixture of feo and fe3o4 when heated in air to a constant weight gains 5% in weight. Find the composition of the initial mixture. ( Using Principle of Atom Conservation method)
Answer» A mixture of feo and fe3o4 when heated in air to a constant weight gains 5% in weight. Find the composition of the initial mixture. ( Using Principle of Atom Conservation method)

Discussion

43.	In a face centered unit cell with all the positions occupied by A atoms, the body centered octahedral hole in it occupied by an atom B of an appropriate size. Calculate the void space per unit volume of unit cell for such crystal.
Answer» In a face centered unit cell with all the positions occupied by A atoms, the body centered octahedral hole in it occupied by an atom B of an appropriate size. Calculate the void space per unit volume of unit cell for such crystal.

Discussion

44.	Bond energies in NO, NO+ and NO− are such as
Answer» Bond energies in $N O, N O^{+}$ and $N O^{-}$ are such as

Discussion

45.	The solubility product expression of a salt MX4 which is sparingly soluble with a solubility (S) can be given as:
Answer» The solubility product expression of a salt $M X_{4}$ which is sparingly soluble with a solubility (S) can be given as:

Discussion

46.	Why matrix is also known as ground substance?
Answer» Why matrix is also known as ground substance?

Discussion

47.	2 moles of oxygen gas contain how many numbers of oxygen molecules?
Answer» 2 moles of oxygen gas contain how many numbers of oxygen molecules?

Discussion

48.	50.0 kg of N2 (g) and 10.0 kg of H2(g) are mixed to produce NH3 (g).Calculate the NH3 (g) formed. Identify the limiting reagent in the production of NH3 in the situation
Answer» 50.0 kg of N2 (g) and 10.0 kg of H2(g) are mixed to produce NH3 (g).Calculate the NH3 (g) formed. Identify the limiting reagent in the production of NH3 in the situation

Discussion

49.	40. Write the name of the organic compound which on acid hydrolysis gives 1 mole of acetaldehyde and 2 moles of ethanol
Answer» 40. Write the name of the organic compound which on acid hydrolysis gives 1 mole of acetaldehyde and 2 moles of ethanol

Discussion

50.	20. Calculate the quantity of electricity in coulomb which liberates enough hydrogen at the cathode during electrolysis of acidified water so that it can fill a ballon of capacity 10 litres at a pressure of 1.5 atm at 27^° C. If the oxygen liberated is completely used in burning methane Calculate the volume of methane at STP which is Burnt.
Answer» 20. Calculate the quantity of electricity in coulomb which liberates enough hydrogen at the cathode during electrolysis of acidified water so that it can fill a ballon of capacity 10 litres at a pressure of 1.5 atm at 27^° C. If the oxygen liberated is completely used in burning methane Calculate the volume of methane at STP which is Burnt.

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

CH_2=CH_2\xrightarrow[{H_3O^+}]{CH_3COOH}A What is A

Write the unit of equilibrium constant (Kc) for the given reaction. C(s)+12O2(g)→CO2(g)

What is the hybridization of cr in (cr(nh3)6) ^3+ also give its orbital diagram.

What does short hand representation mean?

the time t1 and t2 are the time period for 1/3 rd and 2/3rd completion of two first order reaction .if the half lives are in the ratio 10:3 then the ratio of t1 and t2

What is -R effect?

Identify the product D in the following reaction sequence:

In Tyndall effect the colloidally suspended particles:

the complex compound in which metal is not present in zero oxidation state 1) mn2(co)10;2)ni(co)4 ;3) cr(c6h6)2 ; 4) K\lbrack pt el3(c2h4)

density of body centred unit cell having edge length 190pm is 8.2 gcm^-3 the mass of atom in the unit cell is

In which of the following molecules is the number of lone pairs and bond pairs on central atom not equal?

83 The activation energies for the forward and reverse elementary reactions in the system

Can nitrogen form 4 bonds.

Which one in the following is not the resonance structure ofCO2(a) O C = O(b) O-C O\ast(d) O C O+(c) O C-O

35. Amongst the following the total number of compounds soluble in aqueous NaOH are 1)4 2)3 3)1 4)2

Why are lithium salts commonly hydrated and those of the other alkali metal ions usually anhydrous?

Wash and wear clothes are manufactured using

What is the meaning of 'delfa' in the equation of I=negative gradiant of V ?

What is Centre of symmetry in unit cell

The increasing order (lowest first) for the values of e/m (charge/mass) for

the combustion of butane produces heat by the following reaction :2 C4H10 +13O2 -----8 CO2+10 H2O.DH= -5314 KJ/mol.How many grams of butane must be heated to produce 1x104KJ of heat

Is methyl benzene be more reactive than sec methyl benzene towards electrophilic addition reaction

There is an insect moving on horizontal floor, on which it can only move forward- backward or turn left-right. What is the degrees of freedom of that insect ?

The bond order of NO is 2.5 or not ?

The weight of a molecule of the compound C60H122 is

6. The elevation in boiling point of 0.1 m aqueous solution of NaCl, CuSO4 and Na2SO4 are in the ratio

the pH of a solution by mixing 100ml of 0.2 M CH3COOH with 100ml of 0.2 M NaOH will be(pKa for CH3COOH=4.74 and \log2=0.301

What will be the balanced equation for the reaction when carbon dioxide is passed through a cold solution of sodium carbonate?

The rate constant of the reaction A→B is 0.8×10−3mol L−1s−1. The concentration of A is 5 M then what is the concentration of B after 20 minutes?

Discuss tetrahedral and octahedral interstitial voids in a close packed arrangement

is blood a homogenous mixture ? If yes, then is it present in one phase

The perpendicular from A on the side BC of ABC intersects BC at D such that DB=3CD. Prove that 2ABsquare = 2ACsquare+BCsquare.

Which one of the following reactions is a redox reaction?

Find how much wood was used in making acubical pen stand of side 9 cm and thickness 2 cm.

In the given reaction5H2O2+xClO2+2OH−→yCl−+zO2+6H2OThe values of x, y and z are:

The process where the anode is an impure metal and the cathode is a pure metal used in refining is called ___

The bond between carbon atom (1) and carbon atom (2) in compound N≡C1−CH2=CH2 involves the hybridisation as

An exothermic reaction is represented by the graph :

43. What fraction of a mole of iron metal will be produced by the passage of 4 amp of current through 1 L of .1M Fe+3 solution for 1 hr . Assume only iron is reduced

why lattice energy is is inversely proportional to inter ionic distance ?

A mixture of feo and fe3o4 when heated in air to a constant weight gains 5% in weight. Find the composition of the initial mixture. ( Using Principle of Atom Conservation method)

In a face centered unit cell with all the positions occupied by A atoms, the body centered octahedral hole in it occupied by an atom B of an appropriate size. Calculate the void space per unit volume of unit cell for such crystal.

Bond energies in NO, NO+ and NO− are such as

The solubility product expression of a salt MX4 which is sparingly soluble with a solubility (S) can be given as:

Why matrix is also known as ground substance?

2 moles of oxygen gas contain how many numbers of oxygen molecules?

50.0 kg of N2 (g) and 10.0 kg of H2(g) are mixed to produce NH3 (g).Calculate the NH3 (g) formed. Identify the limiting reagent in the production of NH3 in the situation

40. Write the name of the organic compound which on acid hydrolysis gives 1 mole of acetaldehyde and 2 moles of ethanol