46295 + Interview Questions in Chemistry

1.	17. Which alkali metal has most ionic mobility in aq. Solution.( Na, Li, k , Rb)
Answer» 17. Which alkali metal has most ionic mobility in aq. Solution.( Na, Li, k , Rb)

Discussion

2.	what is axial bond and equitorial bonds?
Answer» what is axial bond and equitorial bonds?

Discussion

3.	Benzaldehyde undergoes aldol condensation in -
Answer» Benzaldehyde undergoes aldol condensation in -

Discussion

4.	The number of isomers that can be obtained theoretically on monochlorination of 2 - methylbutane is:
Answer» The number of isomers that can be obtained theoretically on monochlorination of 2 - methylbutane is:

Discussion

5.	The molar enthalpy of vaporization of hexane (C6H14) is 28.9 kJ/mol, and its normal boiling point is 69∘C. What is the vapour pressure of hexane at 25.00∘C in torr? [e−1.5=0.222]
Answer» The molar enthalpy of vaporization of hexane $(C_{6} H_{14})$ is $28.9 k J / m o l$ , and its normal boiling point is $69^{\circ} C$ . What is the vapour pressure of hexane at ${25.00}^{\circ} C$ in $t o r r$ ? [ $e^{- 1.5} = 0.222$ ]

Discussion

6.	Isn't the evolution of energy in an exothermic reaction a violation of the law of conservation of energy
Answer» Isn't the evolution of energy in an exothermic reaction a violation of the law of conservation of energy

Discussion

7.	How many grams of glucose are present in 100 ml of 0.1 M solution
Answer» How many grams of glucose are present in 100 ml of 0.1 M solution

Discussion

8.	The correct increasing order of trans-effect of the following species is
Answer» The correct increasing order of trans-effect of the following species is

Discussion

9.	Explain Vernier calliper scale concept in a simple way and its numerical problems (at least one) of it.
Answer» Explain Vernier calliper scale concept in a simple way and its numerical problems (at least one) of it.

Discussion

10.	When isobutyl magnesium bromide in dry ether is treated with absolute ethyl alcohol, the products formed are
Answer» When isobutyl magnesium bromide in dry ether is treated with absolute ethyl alcohol, the products formed are

Discussion

11.	Why is chlorine the element with highest electron affinity if fluorine is at the top of the halogen group because electron affinity decreases down a group.
Answer» Why is chlorine the element with highest electron affinity if fluorine is at the top of the halogen group because electron affinity decreases down a group.

Discussion

12.	The momentum of a particle with de-Broglie wavelength 1∘A is: (h=6.62×10−34Js)
Answer» The momentum of a particle with de-Broglie wavelength $1 \circ A$ is: $(h = 6.62 \times 10^{- 34} J s)$

Discussion

13.	Regarding the rate of a reversible reaction, the correct explanation of the effect of catalyst is
Answer» Regarding the rate of a reversible reaction, the correct explanation of the effect of catalyst is

13.

Regarding the rate of a reversible reaction, the correct explanation of the effect of catalyst is

Answer»

Regarding the rate of a reversible reaction, the correct explanation of the effect

of catalyst is

Discussion

14.	An acidified solution of Cu2+ salt containing 0.636 g of Cu2+ is electrolysed until all the copper is deposited. The electrolysis is continued for another 16 min 5 sec with the volume of the solution kept at 100 mL and current at 1.2 amps. Calculate the volume of gases evolved during the entire electrolysis. (atomic wt of Cu = 63.6)
Answer» An acidified solution of $C u^{2 +}$ salt containing 0.636 g of $C u^{2 +}$ is electrolysed until all the copper is deposited. The electrolysis is continued for another 16 min 5 sec with the volume of the solution kept at 100 mL and current at 1.2 amps. Calculate the volume of gases evolved during the entire electrolysis. (atomic wt of Cu = 63.6)

Discussion

15.	What is diazotrophy
Answer» What is diazotrophy

Discussion

16.	Reaction between diethyl cadmium and acetyl chloride leads to the formation of
Answer» Reaction between diethyl cadmium and acetyl chloride leads to the formation of

Discussion

17.	If the mass of 11.25 m of a uniform rod is 42.75 kg, then the mass of 6 m of the same rod is? A)22.8 kg B)25.6 kg C)28 kg D)26.5 kg
Answer» If the mass of 11.25 m of a uniform rod is 42.75 kg, then the mass of 6 m of the same rod is? A)22.8 kg B)25.6 kg C)28 kg D)26.5 kg

Discussion

18.	6 Electrolysis of dil aq NaCl solution was carried out by passing 10 milliampere current. The time required to liberate 0.01 mol of H2 gas at the cathode is
Answer» 6 Electrolysis of dil aq NaCl solution was carried out by passing 10 milliampere current. The time required to liberate 0.01 mol of H2 gas at the cathode is

Discussion

19.	which substance has the strongest London dispersion forces?} h20 h2 h2Se or h2Te h2te
Answer» which substance has the strongest London dispersion forces?} h20 h2 h2Se or h2Te h2te

Discussion

20.	For reaction 2A+3B=C+4D the following expression log(-da/dt)=log(DD/dt)+x is valid then value of x is
Answer» For reaction 2A+3B=C+4D the following expression log(-da/dt)=log(DD/dt)+x is valid then value of x is

Discussion

21.	for radioactive reaction 90% of reaction completes in 10 years.what will be its half life
Answer» for radioactive reaction 90% of reaction completes in 10 years.what will be its half life

Discussion

22.	The rate constants of a reaction at 300K and 280K respectively are K1 and K2, then a)K1= 20K2 b)K2=4K1 c)K1=4K2 d)K1=0.5K2 ?
Answer» The rate constants of a reaction at 300K and 280K respectively are K1 and K2, then a)K1= 20K2 b)K2=4K1 c)K1=4K2 d)K1=0.5K2 ?

Discussion

23.	What is difference between hydrolysis and dissociation in aqueous solution
Answer» What is difference between hydrolysis and dissociation in aqueous solution

Discussion

24.	शरत् की रचनाओं में उनके जीवन की अनेक घटनाएँ और पात्र सजीव हो उठे हैं। पाठ के आधार पर विवेचना कीजिए।
Answer» शरत् की रचनाओं में उनके जीवन की अनेक घटनाएँ और पात्र सजीव हो उठे हैं। पाठ के आधार पर विवेचना कीजिए।

Discussion

25.	The amount of Ag (atomic mass = 108) deposited at the cathode when a current of 0.5 amp is passed through a solution of AgNO3 for 1 hour is closest to :
Answer» The amount of Ag (atomic mass = 108) deposited at the cathode when a current of 0.5 amp is passed through a solution of AgNO $_{3}$ for 1 hour is closest to :

Discussion

26.	Two atom of hydrogen combine to form a molecule of hydrogen gas ,the energy of the H2 molecule is - a)greater than that of separate atoms b) equal to that of separate atoms c) lower than that of separate atoms d)some times lower & some times higher
Answer» Two atom of hydrogen combine to form a molecule of hydrogen gas ,the energy of the H2 molecule is - a)greater than that of separate atoms b) equal to that of separate atoms c) lower than that of separate atoms d)some times lower & some times higher

Discussion

27.	The concentration of tritium is about one atom per____atoms of protium
Answer» The concentration of tritium is about one atom per____atoms of protium

Discussion

28.	In salts of Co, Sb, Sn & Cd, H2S was added, Thecolour of the precipitates obtained were as follou2blackyelloworangebrownAВCDWhich set is correct for its colour of its sulphide:-(1) A-Co(2) B-Sb(3) C-Sn(4) D-Cd
Answer» In salts of Co, Sb, Sn & Cd, H2S was added, Thecolour of the precipitates obtained were as follou2blackyelloworangebrownAВCDWhich set is correct for its colour of its sulphide:-(1) A-Co(2) B-Sb(3) C-Sn(4) D-Cd

Discussion

29.	SN1 reactions are accompanied by racemization in optically active alkyl halides. Give reason.
Answer» SN₁reactions are accompanied by racemization in optically active alkyl halides. Give reason.

Discussion

30.	A solution containing 9.5 g per dm3 of MgCl2 (molecular mass 95g mol−1) is isotonic with a 5% solution of a non-volatile solute. The molecular mass of solute is:
Answer» A solution containing 9.5 g per $d m^{3}$ of $M g C l_{2}$ (molecular mass $95 g m o l^{- 1}$ ) is isotonic with a $5 %$ solution of a non-volatile solute. The molecular mass of solute is:

Discussion

31.	Nicl2)(H20)4 ,cocl(MH3)5 2++ why in this Ni2+,co3+ are lewis acids and in Fe(CN)63 also Fe2+ lewis acid
Answer» Nicl2)(H20)4 ,cocl(MH3)5 2++ why in this Ni2+,co3+ are lewis acids and in Fe(CN)63 also Fe2+ lewis acid

Discussion

32.	What if the radius ratio of an ion is 0.225?Which value of co-ordination no. to be taken? 3 or 4?
Answer» What if the radius ratio of an ion is 0.225? Which value of co-ordination no. to be taken? 3 or 4?

Discussion

33.	What is the major product obtained in the given sequence of reaction?
Answer» What is the major product obtained in the given sequence of reaction?

Discussion

34.	A transistor is used in common emitter mode in an amplifier circuit. When a signal of 20 mV is added to the base-emitter voltage, the base current changes by 20 μA and current gain is 100. The transconductance is,
Answer» A transistor is used in common emitter mode in an amplifier circuit. When a signal of $20 mV$ is added to the base-emitter voltage, the base current changes by $20 μ A$ and current gain is $100$ . The transconductance is,

Discussion

35.	The nitration of a compound is due to the?
Answer» The nitration of a compound is due to the?

35.

The nitration of a compound is due to the?

Answer»

The nitration of a compound is due to the?

Discussion

36.	The rotational energy barrier in K cal mol−1 between the most stable and the least stable conformations of 2,3- dimethylbutane along C2−C3 bond is : (Given : Energies K cal mol−1 for H/CH3 eclipsing = 1.8, CH3/CH3 eclipsing = 3.9, CH3/CH3 gauche = 0.9. Torsional strain of H/H eclipsing is neglected.)
Answer» The rotational energy barrier $i n {K cal mol}^{- 1}$ between the most stable and the least stable conformations of $2,3- dimethylbutane$ along $C_{2} - C_{3}$ bond is : (Given : Energies ${K cal mol}^{- 1}$ for $H / C H_{3}$ eclipsing = $1.8$ , $C H_{3} / C H_{3}$ eclipsing = $3.9$ , $C H_{3} / C H_{3}$ gauche = $0.9$ . Torsional strain of $H / H$ eclipsing is neglected.)

Discussion

37.	Select the correct statement about carbenium Ion(a) it is Planner with empty p-orbital (B)there are 3 Sigma (C-H)bonds (C)it is electron deficient with 6 electron in outer shell (D)all of the above are correct statements
Answer» Select the correct statement about carbenium Ion(a) it is Planner with empty p-orbital (B)there are 3 Sigma (C-H)bonds (C)it is electron deficient with 6 electron in outer shell (D)all of the above are correct statements

Discussion

38.	Two tautomeric forms of phosphorus acid are:
Answer» Two tautomeric forms of phosphorus acid are:

Discussion

39.	is not a functional isomer of:
Answer» is not a functional isomer of:

Discussion

40.	What is the physical significance of R and why is always Cp greater than Cp?
Answer» What is the physical significance of R and why is always Cp greater than Cp?

Discussion

41.	Are atoms divisible or indivisible?
Answer» Are atoms divisible or indivisible?

Discussion

42.	Find the ratio of no. of pure and hybrid orbitals in benzene with clear explanation and structure.
Answer» Find the ratio of no. of pure and hybrid orbitals in benzene with clear explanation and structure.

Discussion

43.	Why some of the reactants in equilibrium state is unreacted
Answer» Why some of the reactants in equilibrium state is unreacted

Discussion

44.	The value of 8.0 km in inches is (1 m = 1.094 yards & 1 yard = 36 inches)
Answer» The value of $8.0 k m$ in inches is (1 m = 1.094 yards & 1 yard = 36 inches)

44.

The value of 8.0 km in inches is (1 m = 1.094 yards & 1 yard = 36 inches)

Answer»

The value of $8.0 k m$ in inches is

(1 m = 1.094 yards & 1 yard = 36 inches)

Discussion

45.	Mole fraction in benzene of iodine is 0.2 than what is the molality of benzene ? A)2.35 B)3.20 C)2.75 D)3.6
Answer» Mole fraction in benzene of iodine is 0.2 than what is the molality of benzene ? A)2.35 B)3.20 C)2.75 D)3.6

45.

Mole fraction in benzene of iodine is 0.2 than what is the molality of benzene ? A)2.35 B)3.20 C)2.75 D)3.6

Answer»

Mole fraction in benzene of iodine is 0.2 than what is the molality of benzene ?

A)2.35 B)3.20 C)2.75 D)3.6

Discussion

46.	Molar conductances of BaCl2,H2SO4 and HCl at infinite dilutions are x1,x2 and x3 respectively. Equivalent conductance of BaSO4 at infinite dilution will be :
Answer» Molar conductances of $B a C l_{2}, H_{2} S O_{4}$ and HCl at infinite dilutions are $x_{1}, x_{2}$ and $x_{3}$ respectively. Equivalent conductance of $B a S O_{4}$ at infinite dilution will be :

Discussion

47.	How many isomers of c5H11 oH will be primary alcohol
Answer» How many isomers of c5H11 oH will be primary alcohol

Discussion

48.	Let the solubility of an aqueous solution of Mg(OH)2 be 'x' then, its Ksp is
Answer» Let the solubility of an aqueous solution of $M g (O H)_{2}$ be 'x' then, its $K_{s p}$ is

Discussion

49.	What is dissociation of strong and weak acids?What are the ways of doing it?
Answer» What is dissociation of strong and weak acids?What are the ways of doing it?

Discussion

50.	4.What is the max no of e which can be accomodated in an atom in which the highest priciple quantum no value is 4
Answer» 4.What is the max no of e which can be accomodated in an atom in which the highest priciple quantum no value is 4

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

17. Which alkali metal has most ionic mobility in aq. Solution.( Na, Li, k , Rb)

what is axial bond and equitorial bonds?

Benzaldehyde undergoes aldol condensation in -

The number of isomers that can be obtained theoretically on monochlorination of 2 - methylbutane is:

The molar enthalpy of vaporization of hexane (C6H14) is 28.9 kJ/mol, and its normal boiling point is 69∘C. What is the vapour pressure of hexane at 25.00∘C in torr? [e−1.5=0.222]

Isn't the evolution of energy in an exothermic reaction a violation of the law of conservation of energy

How many grams of glucose are present in 100 ml of 0.1 M solution

The correct increasing order of trans-effect of the following species is

Explain Vernier calliper scale concept in a simple way and its numerical problems (at least one) of it.

When isobutyl magnesium bromide in dry ether is treated with absolute ethyl alcohol, the products formed are

Why is chlorine the element with highest electron affinity if fluorine is at the top of the halogen group because electron affinity decreases down a group.

The momentum of a particle with de-Broglie wavelength 1∘A is: (h=6.62×10−34Js)

Regarding the rate of a reversible reaction, the correct explanation of the effect of catalyst is

What is diazotrophy

Reaction between diethyl cadmium and acetyl chloride leads to the formation of

If the mass of 11.25 m of a uniform rod is 42.75 kg, then the mass of 6 m of the same rod is? A)22.8 kg B)25.6 kg C)28 kg D)26.5 kg

6 Electrolysis of dil aq NaCl solution was carried out by passing 10 milliampere current. The time required to liberate 0.01 mol of H2 gas at the cathode is

which substance has the strongest London dispersion forces?} h20 h2 h2Se or h2Te h2te

For reaction 2A+3B=C+4D the following expression log(-da/dt)=log(DD/dt)+x is valid then value of x is

for radioactive reaction 90% of reaction completes in 10 years.what will be its half life

The rate constants of a reaction at 300K and 280K respectively are K1 and K2, then a)K1= 20K2 b)K2=4K1 c)K1=4K2 d)K1=0.5K2 ?

What is difference between hydrolysis and dissociation in aqueous solution

शरत् की रचनाओं में उनके जीवन की अनेक घटनाएँ और पात्र सजीव हो उठे हैं। पाठ के आधार पर विवेचना कीजिए।

The amount of Ag (atomic mass = 108) deposited at the cathode when a current of 0.5 amp is passed through a solution of AgNO3 for 1 hour is closest to :

Two atom of hydrogen combine to form a molecule of hydrogen gas ,the energy of the H2 molecule is - a)greater than that of separate atoms b) equal to that of separate atoms c) lower than that of separate atoms d)some times lower & some times higher

The concentration of tritium is about one atom per____atoms of protium

In salts of Co, Sb, Sn & Cd, H2S was added, Thecolour of the precipitates obtained were as follou2blackyelloworangebrownAВCDWhich set is correct for its colour of its sulphide:-(1) A-Co(2) B-Sb(3) C-Sn(4) D-Cd

SN1 reactions are accompanied by racemization in optically active alkyl halides. Give reason.

A solution containing 9.5 g per dm3 of MgCl2 (molecular mass 95g mol−1) is isotonic with a 5% solution of a non-volatile solute. The molecular mass of solute is:

Nicl2)(H20)4 ,cocl(MH3)5 2++ why in this Ni2+,co3+ are lewis acids and in Fe(CN)63 also Fe2+ lewis acid

What if the radius ratio of an ion is 0.225?Which value of co-ordination no. to be taken? 3 or 4?

What is the major product obtained in the given sequence of reaction?

A transistor is used in common emitter mode in an amplifier circuit. When a signal of 20 mV is added to the base-emitter voltage, the base current changes by 20 μA and current gain is 100. The transconductance is,

The nitration of a compound is due to the?

Select the correct statement about carbenium Ion(a) it is Planner with empty p-orbital (B)there are 3 Sigma (C-H)bonds (C)it is electron deficient with 6 electron in outer shell (D)all of the above are correct statements

Two tautomeric forms of phosphorus acid are:

is not a functional isomer of:

What is the physical significance of R and why is always Cp greater than Cp?

Are atoms divisible or indivisible?

Find the ratio of no. of pure and hybrid orbitals in benzene with clear explanation and structure.

Why some of the reactants in equilibrium state is unreacted

The value of 8.0 km in inches is (1 m = 1.094 yards &amp; 1 yard = 36 inches)

Mole fraction in benzene of iodine is 0.2 than what is the molality of benzene ? A)2.35 B)3.20 C)2.75 D)3.6

Molar conductances of BaCl2,H2SO4 and HCl at infinite dilutions are x1,x2 and x3 respectively. Equivalent conductance of BaSO4 at infinite dilution will be :

How many isomers of c5H11 oH will be primary alcohol

Let the solubility of an aqueous solution of Mg(OH)2 be 'x' then, its Ksp is

What is dissociation of strong and weak acids?What are the ways of doing it?

4.What is the max no of e which can be accomodated in an atom in which the highest priciple quantum no value is 4

The value of 8.0 km in inches is (1 m = 1.094 yards & 1 yard = 36 inches)