46295 + Interview Questions in Chemistry

1.	Oxidation number of oxygen and fluroine of HOF?
Answer» Oxidation number of oxygen and fluroine of HOF?

Discussion

2.	Which of the following bases is not present in DNA? (a) Adenine (b) Thymine (c) Cytosine (d) Uracil
Answer» Which of the following bases is not present in DNA? (a) Adenine (b) Thymine (c) Cytosine (d) Uracil

Discussion

3.	3. 0.5g of metal when placed in a solution of the salt of the second metal displaced 4.5g of the later. The chloride of the first metal contains 74.63% of chlorine. The equivalent weight of the second metal is? (1) 12 (2) 24 (3) 108 (4) 54
Answer» 3. 0.5g of metal when placed in a solution of the salt of the second metal displaced 4.5g of the later. The chloride of the first metal contains 74.63% of chlorine. The equivalent weight of the second metal is? (1) 12 (2) 24 (3) 108 (4) 54

Discussion

4.	how to find most stable carbocation if EWG or EDG groupps are attached to benzene ring ??
Answer» how to find most stable carbocation if EWG or EDG groupps are attached to benzene ring ??

Discussion

5.	GIVE THE IUPAC NAME : 1)CH3-CH(Cl)-CH2-COOH 2)CH3-CH=CH-CH2-NO2 3)CH3-CH=CH-COOH
Answer» GIVE THE IUPAC NAME : 1)CH3-CH(Cl)-CH2-COOH 2)CH3-CH=CH-CH2-NO2 3)CH3-CH=CH-COOH

Discussion

6.	14. normality of an aqua solution containing HCL and HNo3 is N/5 and 20 ml of the solution is treated with excess of AGNO3 solution , 0.287 grams precipitate of agcl is obtained calculate the percentage composition of two acids
Answer» 14. normality of an aqua solution containing HCL and HNo3 is N/5 and 20 ml of the solution is treated with excess of AGNO3 solution , 0.287 grams precipitate of agcl is obtained calculate the percentage composition of two acids

Discussion

7.	If mass can neither be created nor destroyed then what is the origin of mass. Please tell i am very much curious about this
Answer» If mass can neither be created nor destroyed then what is the origin of mass. Please tell i am very much curious about this

Discussion

8.	Which of the following statements is/are true?
Answer» Which of the following statements is/are true?

Discussion

9.	10 drops of an oleic acid solution of concentration 1/400 cm3 per cm3 of alcohol are dropped on a water surface. The circular film thus produced has radius 10 cm. Find the molecular size of oleic acid , if the radius of each drop is 1.4 mm.
Answer» 10 drops of an oleic acid solution of concentration 1/400 ${c m}^{3}$ per ${c m}^{3}$ of alcohol are dropped on a water surface. The circular film thus produced has radius 10 cm. Find the molecular size of oleic acid , if the radius of each drop is 1.4 mm.

Discussion

10.	7.The inversion of cane sugar represented by C12H22O11 + H2O ----> C6H12O6 + C6H12O6 is a _______ reaction
Answer» 7.The inversion of cane sugar represented by C12H22O11 + H2O ----> C6H12O6 + C6H12O6 is a _______ reaction

Discussion

11.	give the two self aldol condentation products of ethylacetate
Answer» give the two self aldol condentation products of ethylacetate

Discussion

12.	what is the meaning of u?
Answer» what is the meaning of u?

Discussion

13.	Acetone on reaction with Zn(Hg), HCl gives
Answer» Acetone on reaction with Zn(Hg), HCl gives

Discussion

14.	In the complex [CoCl2(en)2]Br the co-ordination number and oxidation state of cobalt are:
Answer» In the complex $[C o C l_{2} (e n)_{2}] B r$ the co-ordination number and oxidation state of cobalt are:

Discussion

15.	In a gas turbine plant working on Brayton cycle, hot combustion gases from combustion chamber enters into gas turbine at 1450 K and 20 bar and exits at 1 bar. The isentropic efficiency of the gas turbine is 0.90. The work developed by turbine per kg of gas flow is ______(kJ/kg)(Correct upto two decimal places)Takes Cp=1.00kJ/g and Cv=0.769kJ/kgk651.3084
Answer» In a gas turbine plant working on Brayton cycle, hot combustion gases from combustion chamber enters into gas turbine at 1450 K and 20 bar and exits at 1 bar. The isentropic efficiency of the gas turbine is 0.90. The work developed by turbine per kg of gas flow is ______(kJ/kg) (Correct upto two decimal places) Takes $C_{p} = 1.00 k J / g$ and $C_{v} = 0.769 k J / k g k$ 651.3084

Discussion

16.	The standard oxidation potential of Ni\|Ni2+ electrode = 0.236 V. If this is combined with a hydrogen electrode in acid solution, at what pH of the solution will the measured emf be zero at 25 ºC. Assume [Ni2+] = 1M.
Answer» The standard oxidation potential of $N i \| N i^{2 +}$ electrode = 0.236 V. If this is combined with a hydrogen electrode in acid solution, at what pH of the solution will the measured emf be zero at 25 ºC. Assume $[N i^{2 +}]$ = 1M.

Discussion

17.	If the density of a helium gas is 0.1 kg m−3 at pressure 249 kPa, then temperature of the gas will be nearly [R=253 J mol−1K−1]
Answer» If the density of a helium gas is $0.1 {kg m}^{- 3}$ at pressure $249 kPa$ , then temperature of the gas will be nearly $[R = \frac{25}{3} {J mol}^{- 1} K^{- 1}]$

Discussion

18.	Which of the following is correct adsorption isobar for chemisorption ?Here,(xm) is extent of adsorption per unit mass of adsorbent:
Answer» Which of the following is correct adsorption isobar for chemisorption ? Here, $(\frac{x}{m})$ is extent of adsorption per unit mass of adsorbent:

Discussion

19.	4 Is change in entropy for the conversion of o2 to o3 is negative?
Answer» 4 Is change in entropy for the conversion of o2 to o3 is negative?

Discussion

20.	A scientist claims to have developed a heat engine working between 27°C and 727°C with efficiency x. Which of the following values of x will make hisclaim right?
Answer» A scientist claims to have developed a heat engine working between 27°C and 727°C with efficiency x. Which of the following values of x will make his claim right?

Discussion

21.	Let a b q r be positive integers such that a>b, r.
Answer» Let a b q r be positive integers such that a>b, r.

Discussion

22.	Why CO is stronge ligand?
Answer» Why CO is stronge ligand?

Discussion

23.	Which among physisorption and chemisorption has a higher enthalpy of adsorption?
Answer» Which among physisorption and chemisorption has a higher enthalpy of adsorption?

Discussion

24.	A binary solid has atoms B constitutes fcc lattice and atoms A occupies 25% of tetrahedral holes. The formula of the solid s
Answer» A binary solid has atoms B constitutes fcc lattice and atoms A occupies 25% of tetrahedral holes. The formula of the solid s

Discussion

25.	Explain pascal's law of derivation
Answer» Explain pascal's law of derivation

Discussion

26.	8. 2-chlorobutane obtained by chlorination of butane, will be A meso-form B d-form C recemic form D l-form
Answer» 8. 2-chlorobutane obtained by chlorination of butane, will be A meso-form B d-form C recemic form D l-form

Discussion

27.	The correct order for the increasing order of oxidizing power is
Answer» The correct order for the increasing order of oxidizing power is

27.

The correct order for the increasing order of oxidizing power is

Answer»

The correct order for the increasing order of oxidizing power is

Discussion

28.	45. If molality of the dilute solution is doubled,the value of molar depression constant (Kf) will be?
Answer» 45. If molality of the dilute solution is doubled,the value of molar depression constant (Kf) will be?

Discussion

29.	35. What is the order of Cannizzaro reaction at high conc of base
Answer» 35. What is the order of Cannizzaro reaction at high conc of base

Discussion

30.	A ball of mass M moving with speed v parallel to the ground strikes to a bat such that it gets reflected by an angle of 60 degree by maintaining the same. Find magnitude of change in momentum
Answer» A ball of mass M moving with speed v parallel to the ground strikes to a bat such that it gets reflected by an angle of 60 degree by maintaining the same. Find magnitude of change in momentum

Discussion

31.	In the combustion of 2 g of methane, 25 kcal heat is liberated. Find the molar heat of combustion of methane.
Answer» In the combustion of $2 g$ of methane, $25 k c a l$ heat is liberated. Find the molar heat of combustion of methane.

Discussion

32.	In a chemical change from PCl3 → PCl5 the hybrid state of P changes from :
Answer» In a chemical change from $P C l_{3}$ $\to$ $P C l_{5}$ the hybrid state of P changes from :

Discussion

33.	If Nacl is doped with 10^ -3 mol % srcl2 ,what is the concentration of cation vacancies?
Answer» If Nacl is doped with 10^ -3 mol % srcl2 ,what is the concentration of cation vacancies?

Discussion

34.	What's the realtor between volume, pressure and temperature?
Answer» What's the realtor between volume, pressure and temperature?

Discussion

35.	Compound Z is
Answer» Compound Z is

Discussion

36.	Which of the following is not a plannar?
Answer» Which of the following is not a plannar?

Discussion

37.	1-phenylpropene reacts with hydrogen bromide produces
Answer» 1-phenylpropene reacts with hydrogen bromide produces

Discussion

38.	How many moles of magnesium phosphate,will contain 0.25 mole of oxygen atoms?
Answer» How many moles of magnesium phosphate,will contain 0.25 mole of oxygen atoms?

Discussion

39.	what is the difference between particle and molecule ? are both same things?
Answer» what is the difference between particle and molecule ? are both same things?

Discussion

40.	At 300K temperature , 1atm pressure in 1mole of O2 how many atoms are present ?
Answer» At 300K temperature , 1atm pressure in 1mole of O2 how many atoms are present ?

Discussion

41.	Which allotrope of carbon conducts electricity?
Answer» Which allotrope of carbon conducts electricity?

Discussion

42.	Spin magnetic moment of A to the power n (+2), (Z=26)is 24B.M. find number of unpaired electrons and value of n
Answer» Spin magnetic moment of A to the power n (+2), (Z=26)is 24B.M. find number of unpaired electrons and value of n

Discussion

43.	Which of the following bonds has the highest energy?
Answer» Which of the following bonds has the highest energy?

Discussion

44.	Q1. A mixture of N2 and H2 caused to react in a closed container to form NH3. The reaction ceases before either reactant has been totally consumed. At this stage,2.0 moles each of N2,H2 and NH3 are present.The masses of N2 and H2 originally taken?
Answer» Q1. A mixture of N2 and H2 caused to react in a closed container to form NH3. The reaction ceases before either reactant has been totally consumed. At this stage,2.0 moles each of N2,H2 and NH3 are present.The masses of N2 and H2 originally taken?

Discussion

45.	How to find which has priority in positive and negative inductive effect? Also where does So3H lie in decreasing order of negative inductive effect?
Answer» How to find which has priority in positive and negative inductive effect? Also where does So3H lie in decreasing order of negative inductive effect?

Discussion

46.	24.2 liters of N2 at 0 degree Celsius and 5 atm pressure are expanded isothermally against a constant pressure of 1 atm until the pressure of the gas is also 1 atm. Assuming the gas
Answer» 24.2 liters of N2 at 0 degree Celsius and 5 atm pressure are expanded isothermally against a constant pressure of 1 atm until the pressure of the gas is also 1 atm. Assuming the gas

Discussion

47.	21 Radius of Ar atom is 145pm. The percentage volume occupied by an Ar atom at STP is
Answer» 21 Radius of Ar atom is 145pm. The percentage volume occupied by an Ar atom at STP is

Discussion

48.	What is the bond order of Cl-----O in perchlorate ion?
Answer» What is the bond order of Cl-----O in perchlorate ion?

Discussion

49.	81. How to identify which salt is strong or weak and which salt is acidic or basic?
Answer» 81. How to identify which salt is strong or weak and which salt is acidic or basic?

Discussion

50.	A compound has hexagonal closed packed structure. What is the total number of voids present in 0.5 mol of it?
Answer» A compound has hexagonal closed packed structure. What is the total number of voids present in $0.5 m o l$ of it?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Oxidation number of oxygen and fluroine of HOF?

Which of the following bases is not present in DNA? (a) Adenine (b) Thymine (c) Cytosine (d) Uracil

3. 0.5g of metal when placed in a solution of the salt of the second metal displaced 4.5g of the later. The chloride of the first metal contains 74.63% of chlorine. The equivalent weight of the second metal is? (1) 12 (2) 24 (3) 108 (4) 54

how to find most stable carbocation if EWG or EDG groupps are attached to benzene ring ??

GIVE THE IUPAC NAME : 1)CH3-CH(Cl)-CH2-COOH 2)CH3-CH=CH-CH2-NO2 3)CH3-CH=CH-COOH

14. normality of an aqua solution containing HCL and HNo3 is N/5 and 20 ml of the solution is treated with excess of AGNO3 solution , 0.287 grams precipitate of agcl is obtained calculate the percentage composition of two acids

If mass can neither be created nor destroyed then what is the origin of mass. Please tell i am very much curious about this

Which of the following statements is/are true?

10 drops of an oleic acid solution of concentration 1/400 cm3 per cm3 of alcohol are dropped on a water surface. The circular film thus produced has radius 10 cm. Find the molecular size of oleic acid , if the radius of each drop is 1.4 mm.

7.The inversion of cane sugar represented by C12H22O11 + H2O ----> C6H12O6 + C6H12O6 is a _______ reaction

give the two self aldol condentation products of ethylacetate

what is the meaning of u?

Acetone on reaction with Zn(Hg), HCl gives

In the complex [CoCl2(en)2]Br the co-ordination number and oxidation state of cobalt are:

The standard oxidation potential of Ni|Ni2+ electrode = 0.236 V. If this is combined with a hydrogen electrode in acid solution, at what pH of the solution will the measured emf be zero at 25 ºC. Assume [Ni2+] = 1M.

If the density of a helium gas is 0.1 kg m−3 at pressure 249 kPa, then temperature of the gas will be nearly [R=253 J mol−1K−1]

Which of the following is correct adsorption isobar for chemisorption ?Here,(xm) is extent of adsorption per unit mass of adsorbent:

4 Is change in entropy for the conversion of o2 to o3 is negative?

A scientist claims to have developed a heat engine working between 27°C and 727°C with efficiency x. Which of the following values of x will make hisclaim right?

Let a b q r be positive integers such that a>b, r.

Why CO is stronge ligand?

Which among physisorption and chemisorption has a higher enthalpy of adsorption?

A binary solid has atoms B constitutes fcc lattice and atoms A occupies 25% of tetrahedral holes. The formula of the solid s

Explain pascal's law of derivation

8. 2-chlorobutane obtained by chlorination of butane, will be A meso-form B d-form C recemic form D l-form

The correct order for the increasing order of oxidizing power is

45. If molality of the dilute solution is doubled,the value of molar depression constant (Kf) will be?

35. What is the order of Cannizzaro reaction at high conc of base

A ball of mass M moving with speed v parallel to the ground strikes to a bat such that it gets reflected by an angle of 60 degree by maintaining the same. Find magnitude of change in momentum

In the combustion of 2 g of methane, 25 kcal heat is liberated. Find the molar heat of combustion of methane.

In a chemical change from PCl3 → PCl5 the hybrid state of P changes from :

If Nacl is doped with 10^ -3 mol % srcl2 ,what is the concentration of cation vacancies?

What's the realtor between volume, pressure and temperature?

Compound Z is

Which of the following is not a plannar?

1-phenylpropene reacts with hydrogen bromide produces

How many moles of magnesium phosphate,will contain 0.25 mole of oxygen atoms?

what is the difference between particle and molecule ? are both same things?

At 300K temperature , 1atm pressure in 1mole of O2 how many atoms are present ?

Which allotrope of carbon conducts electricity?

Spin magnetic moment of A to the power n (+2), (Z=26)is 24B.M. find number of unpaired electrons and value of n

Which of the following bonds has the highest energy?

Q1. A mixture of N2 and H2 caused to react in a closed container to form NH3. The reaction ceases before either reactant has been totally consumed. At this stage,2.0 moles each of N2,H2 and NH3 are present.The masses of N2 and H2 originally taken?

How to find which has priority in positive and negative inductive effect? Also where does So3H lie in decreasing order of negative inductive effect?

24.2 liters of N2 at 0 degree Celsius and 5 atm pressure are expanded isothermally against a constant pressure of 1 atm until the pressure of the gas is also 1 atm. Assuming the gas

21 Radius of Ar atom is 145pm. The percentage volume occupied by an Ar atom at STP is

What is the bond order of Cl-----O in perchlorate ion?

81. How to identify which salt is strong or weak and which salt is acidic or basic?

A compound has hexagonal closed packed structure. What is the total number of voids present in 0.5 mol of it?