46295 + Interview Questions in Chemistry

1.	Calculate the number of molecules present in a gas having mass(in g) equal to vapour density.
Answer» Calculate the number of molecules present in a gas having mass(in g) equal to vapour density.

Discussion

2.	What is chromatid??
Answer» What is chromatid??

Discussion

3.	The species that does not contains peroxide linkage is:
Answer» The species that does not contains peroxide linkage is:

Discussion

4.	For volatile substance, enthalpy of Vapourization is low or high
Answer» For volatile substance, enthalpy of Vapourization is low or high

Discussion

5.	The correct order of IP1 is
Answer» The correct order of $I P_{1}$ is

Discussion

6.	Na2B4O7+H2O+HCl→NaCl+xxΔ→yMg−−→Δz the product 'z' in the reaction is
Answer» $N a_{2} B_{4} O_{7} + H_{2} O + H C l \to N a C l + x x Δ \to y M g - - \to Δ z$ the product 'z' in the reaction is

Discussion

7.	CO2, CH4, CO, NH3, water vapour, N2O, O2, SO2, N2, hydrofluorocarbons, O3, CFC The number of green house gases from the above group is:
Answer» $C O_{2}, C H_{4}, C O, N H_{3}, water vapour, N_{2} O, O_{2}, S O_{2}, N_{2}, hydrofluorocarbons, O_{3}, C F C$ The number of green house gases from the above group is:

Discussion

8.	Identify X and Y in the reaction below :
Answer» Identify X and Y in the reaction below :

Discussion

9.	The total number of ions present in 1ml of 0.1Mbarium nitrate solution is
Answer» The total number of ions present in 1ml of 0.1Mbarium nitrate solution is

Discussion

10.	Ammonia gas is passed into water, yielding a solution of density 0.93 g/cubic cm and containing 18.6 % ammonia by weight. What is the mass of ammonia per cc of the solution?
Answer» Ammonia gas is passed into water, yielding a solution of density 0.93 g/cubic cm and containing 18.6 % ammonia by weight. What is the mass of ammonia per cc of the solution?

Discussion

11.	- a cos (ot- kx), the dimensional formula for k is(2) \lbrack MOLT-0-1T-11(4) IMOLT\rbrack(3) IMOL-1T
Answer» - a cos (ot- kx), the dimensional formula for k is(2) \lbrack MOLT-0-1T-11(4) IMOLT\rbrack(3) IMOL-1T

Discussion

12.	What electronic transition in the He+ ion would emit the radiation of the same wavelength as that of the first Lyman transition of hydrogen atom ?
Answer» What electronic transition in the $H e^{+}$ ion would emit the radiation of the same wavelength as that of the first Lyman transition of hydrogen atom ?

Discussion

13.	Which of the following alkyl halides is used as a methylating agent?
Answer» Which of the following alkyl halides is used as a methylating agent?

Discussion

14.	8. A cyclic dichloride has a total five constitutional plus geometrical isomers. Which of the following satisfy this condition without altering the carbon skeleton? 1- Dichloromethyl cyclopropane 2- Dichlorocyclopentane 3-Dichlorocyclobutane 4-Dichlorocyclohexane
Answer» 8. A cyclic dichloride has a total five constitutional plus geometrical isomers. Which of the following satisfy this condition without altering the carbon skeleton? 1- Dichloromethyl cyclopropane 2- Dichlorocyclopentane 3-Dichlorocyclobutane 4-Dichlorocyclohexane

Discussion

15.	The formation of a chemical bond is accompanied by:
Answer» The formation of a chemical bond is accompanied by:

Discussion

16.	The no. Of tetrahedral and octahedral voids formed with a 1 half of sphere with adjacent layers of close packing are respectively
Answer» The no. Of tetrahedral and octahedral voids formed with a 1 half of sphere with adjacent layers of close packing are respectively

Discussion

17.	Two cylindric A and B of equal capacity are connected to each other via a stopcock . A contains a gas STP. , B is completely evacuated, the entire system is thermally insulat ed .. The stopcock is suddenly op ened ans What is the final pressure of he gas in A and B what is the change in internal energy of the gas what is the change in temperature of the gas Pls give the reason also
Answer» Two cylindric A and B of equal capacity are connected to each other via a stopcock . A contains a gas STP. , B is completely evacuated, the entire system is thermally insulat ed .. The stopcock is suddenly op ened ans What is the final pressure of he gas in A and B what is the change in internal energy of the gas what is the change in temperature of the gas Pls give the reason also

Discussion

18.	Find the number of moles of H2O2 required to completely react with 400ml of 0.5N KMnO4 in acidic medium
Answer» Find the number of moles of H2O2 required to completely react with 400ml of 0.5N KMnO4 in acidic medium

Discussion

19.	if in a vernier calliper 10 vsd coincides with 8msd then least count of vernier calliper is
Answer» if in a vernier calliper 10 vsd coincides with 8msd then least count of vernier calliper is

Discussion

20.	42 One gram equivalent of a substance is present in: 1.0.25mol of 02 2.0.5mol of 02 3.1mol of 02 4.8mol of 02
Answer» 42 One gram equivalent of a substance is present in: 1.0.25mol of 02 2.0.5mol of 02 3.1mol of 02 4.8mol of 02

Discussion

21.	how many ways a bond between two atoms can cleave
Answer» how many ways a bond between two atoms can cleave

Discussion

22.	How to calculate atoms in sc fcc and bcc?
Answer» How to calculate atoms in sc fcc and bcc?

Discussion

23.	Titration of 0.2121g of pure sodium oxalate requires 43.31ml of KMnO4 solution. The molarity of KMnO4 solution is??
Answer» Titration of 0.2121g of pure sodium oxalate requires 43.31ml of KMnO4 solution. The molarity of KMnO4 solution is??

Discussion

24.	The systematic name for neopentyl group is?
Answer» The systematic name for neopentyl group is?

Discussion

25.	What's a-b+c(with a bar or vinculum over b+c) equal to?
Answer» What's a-b+c(with a bar or vinculum over b+c) equal to?

Discussion

26.	41. 0.8 mole of a mixture of CO and CO2 exactly requires 40gram of NaOH in solution for complete conversion of all the CO2 into Na2CO3. How many moles more of NaOH would it require for conversion into Na2CO3,if the mixture (0.8mole)is completely oxidised to CO2?
Answer» 41. 0.8 mole of a mixture of CO and CO2 exactly requires 40gram of NaOH in solution for complete conversion of all the CO2 into Na2CO3. How many moles more of NaOH would it require for conversion into Na2CO3,if the mixture (0.8mole)is completely oxidised to CO2?

Discussion

27.	An organic compound “A” on treatment with benzenesulfonyl chloride gives compound B. B is soluble in dil. NaOH solution. Compound A is:
Answer» An organic compound “A” on treatment with benzenesulfonyl chloride gives compound B. B is soluble in dil. NaOH solution. Compound A is:

Discussion

28.	What may be the correct orbital notation if the wave function is−Ψ=181√6π(1a0)32 σeσ3(3cos2θ−1);Here σ=r/a0 and a0=h2ϵ0πme2
Answer» What may be the correct orbital notation if the wave function is $- Ψ = \frac{1}{81 \sqrt{6 π}} (\frac{1}{a_{0}}) \frac{3}{2} σ e^{\frac{σ}{3}} (3 c o s^{2} θ - 1); H e r e σ = r / a_{0} a n d a_{0} = \frac{h^{2} ϵ_{0}}{π m e^{2}}$

Discussion

29.	Why does Beryllium not form sulphates like other members of group 2?
Answer» Why does Beryllium not form sulphates like other members of group 2?

Discussion

30.	Bond length of C - C in ethane (I) Ethene (II) Ethyne (III) and Benzene (IV) follows the order
Answer» Bond length of C - C in ethane (I) Ethene (II) Ethyne (III) and Benzene (IV) follows the order

Discussion

31.	Which of the following compounds has the minimum cation to anion size ratio?
Answer» Which of the following compounds has the minimum cation to anion size ratio?

Discussion

32.	Explain oxidation in terms of gain or loss of oxygen/hydrogen with two examples.
Answer» Explain oxidation in terms of gain or loss of oxygen/hydrogen with two examples.

Discussion

33.	Wouldn't the formula of FeO change if we multiply it by 2 and write it int the form Fe2O2 ?
Answer» Wouldn't the formula of FeO change if we multiply it by 2 and write it int the form Fe2O2 ?

Discussion

34.	One mole of an ideal monoatomic gas undergoes a process described by the equation PV3 = constant. The heat capacity of the gas during this process is:
Answer» One mole of an ideal monoatomic gas undergoes a process described by the equation $P V^{3}$ = constant. The heat capacity of the gas during this process is:

Discussion

35.	Which of the following fcc structure contains cations in alternate tetrahedral voids?
Answer» Which of the following fcc structure contains cations in alternate tetrahedral voids?

Discussion

36.	Why do sodium and potassium reacts so violently with oxygen and water?
Answer» Why do sodium and potassium reacts so violently with oxygen and water?

Discussion

37.	Which of the following is more reactive towards nucleophilic addition reaction?
Answer» Which of the following is more reactive towards nucleophilic addition reaction?

Discussion

38.	Which metal in the first series of transition metals exhibits +1 oxidation state most frequently and why?
Answer» Which metal in the first series of transition metals exhibits +1 oxidation state most frequently and why?

Discussion

39.	39. The density of a gaseous element is 5 times that of oxygenunder identical conditions. If the molecule is triatomicWhat will be its atomic mass?
Answer» 39. The density of a gaseous element is 5 times that of oxygenunder identical conditions. If the molecule is triatomicWhat will be its atomic mass?

Discussion

40.	Which of the following is in the correct order of their bond length
Answer» Which of the following is in the correct order of their bond length

Discussion

41.	Is a given metal is able to displace hydrogen or not?
Answer» Is a given metal is able to displace hydrogen or not?

Discussion

42.	Which one of the following is not an unsaturated compound?
Answer» Which one of the following is not an unsaturated compound?

Discussion

43.	Anaromatic compound ‘A’ on treatment with aqueous ammoniaand heatingformscompound ‘B’ which on heating with Br2and KOH forms a compound ‘C’ofmolecular formula C6H7N.Write the structures and IUPAC names of compounds A, B and C.
Answer» An aromatic compound ‘A’ on treatment with aqueous ammonia and heating forms compound ‘B’ which on heating with Br₂ and KOH forms a compound ‘C’ of molecular formula C₆H₇N. Write the structures and IUPAC names of compounds A, B and C.

43.

Anaromatic compound ‘A’ on treatment with aqueous ammoniaand heatingformscompound ‘B’ which on heating with Br2and KOH forms a compound ‘C’ofmolecular formula C6H7N.Write the structures and IUPAC names of compounds A, B and C.

Answer»

An
aromatic compound ‘A’ on treatment with aqueous ammonia
and heating

forms
compound ‘B’ which on heating with Br₂
and KOH forms a compound ‘C’

of
molecular formula C₆H₇N.
Write the structures and IUPAC names of compounds A, B and C.

Discussion

44.	What is the place value of 7 in 528.8397 ?
Answer» What is the place value of $7$ in $528.8397$ ?

Discussion

45.	18 For the following cell reaction Cu(s)+2Ag+(aq)>2Ag(s)+Cu+2(aq) E^° cell is 0.46V and 300k and 0.50V at 340k then what will be entropy change 1)96.5J/k 2)193J/k 3)386J/k 4)none
Answer» 18 For the following cell reaction Cu(s)+2Ag+(aq)>2Ag(s)+Cu+2(aq) E^° cell is 0.46V and 300k and 0.50V at 340k then what will be entropy change 1)96.5J/k 2)193J/k 3)386J/k 4)none

Discussion

46.	the ratio of number of collisions per second at the walls of containers by He and O2 gas molecules kept at same volume and temperature is
Answer» the ratio of number of collisions per second at the walls of containers by He and O2 gas molecules kept at same volume and temperature is

Discussion

47.	Find the number of moles of NaOH required to neutralize 448 g equimolar mixture of Na2C2O4 and H2C2O4.
Answer» Find the number of moles of $N a O H$ required to neutralize 448 g equimolar mixture of $N a_{2} C_{2} O_{4}$ and $H_{2} C_{2} O_{4}$ .

Discussion

48.	Which pair of isomerism is not possible together?
Answer» Which pair of isomerism is not possible together?

Discussion

49.	Which form of cis-1, 4-cyclohexane diol is most stable?
Answer» Which form of cis-1, 4-cyclohexane diol is most stable?

Discussion

50.	2.5 mL of 25M weak monoacidic base (Kb=1×10−12) at 25oC is titrated with 215M HCl in water at 25oC. The concentration of H+ at equivalence point is (Kw=1×10−14 at 25oC)
Answer» 2.5 mL of $\frac{2}{5} M$ weak monoacidic base ( $K_{b} = 1 \times 10^{- 12}$ ) at $25^{o} C$ is titrated with $\frac{2}{15} M$ HCl in water at $25^{o} C .$ The concentration of $H^{+}$ at equivalence point is $(K_{w} = 1 \times 10^{- 14} a t 25^{o} C)$

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Calculate the number of molecules present in a gas having mass(in g) equal to vapour density.

What is chromatid??

The species that does not contains peroxide linkage is:

For volatile substance, enthalpy of Vapourization is low or high

The correct order of IP1 is

Na2B4O7+H2O+HCl→NaCl+xxΔ→yMg−−→Δz the product 'z' in the reaction is

CO2, CH4, CO, NH3, water vapour, N2O, O2, SO2, N2, hydrofluorocarbons, O3, CFC The number of green house gases from the above group is:

Identify X and Y in the reaction below :

The total number of ions present in 1ml of 0.1Mbarium nitrate solution is

Ammonia gas is passed into water, yielding a solution of density 0.93 g/cubic cm and containing 18.6 % ammonia by weight. What is the mass of ammonia per cc of the solution?

- a cos (ot- kx), the dimensional formula for k is(2) \lbrack MOLT-0-1T-11(4) IMOLT\rbrack(3) IMOL-1T

What electronic transition in the He+ ion would emit the radiation of the same wavelength as that of the first Lyman transition of hydrogen atom ?

Which of the following alkyl halides is used as a methylating agent?

8. A cyclic dichloride has a total five constitutional plus geometrical isomers. Which of the following satisfy this condition without altering the carbon skeleton? 1- Dichloromethyl cyclopropane 2- Dichlorocyclopentane 3-Dichlorocyclobutane 4-Dichlorocyclohexane

The formation of a chemical bond is accompanied by:

The no. Of tetrahedral and octahedral voids formed with a 1 half of sphere with adjacent layers of close packing are respectively

Find the number of moles of H2O2 required to completely react with 400ml of 0.5N KMnO4 in acidic medium

if in a vernier calliper 10 vsd coincides with 8msd then least count of vernier calliper is

42 One gram equivalent of a substance is present in: 1.0.25mol of 02 2.0.5mol of 02 3.1mol of 02 4.8mol of 02

how many ways a bond between two atoms can cleave

How to calculate atoms in sc fcc and bcc?

Titration of 0.2121g of pure sodium oxalate requires 43.31ml of KMnO4 solution. The molarity of KMnO4 solution is??

The systematic name for neopentyl group is?

What's a-b+c(with a bar or vinculum over b+c) equal to?

41. 0.8 mole of a mixture of CO and CO2 exactly requires 40gram of NaOH in solution for complete conversion of all the CO2 into Na2CO3. How many moles more of NaOH would it require for conversion into Na2CO3,if the mixture (0.8mole)is completely oxidised to CO2?

An organic compound “A” on treatment with benzenesulfonyl chloride gives compound B. B is soluble in dil. NaOH solution. Compound A is:

What may be the correct orbital notation if the wave function is−Ψ=181√6π(1a0)32 σeσ3(3cos2θ−1);Here σ=r/a0 and a0=h2ϵ0πme2

Why does Beryllium not form sulphates like other members of group 2?

Bond length of C - C in ethane (I) Ethene (II) Ethyne (III) and Benzene (IV) follows the order

Which of the following compounds has the minimum cation to anion size ratio?

Explain oxidation in terms of gain or loss of oxygen/hydrogen with two examples.

Wouldn't the formula of FeO change if we multiply it by 2 and write it int the form Fe2O2 ?

One mole of an ideal monoatomic gas undergoes a process described by the equation PV3 = constant. The heat capacity of the gas during this process is:

Which of the following fcc structure contains cations in alternate tetrahedral voids?

Why do sodium and potassium reacts so violently with oxygen and water?

Which of the following is more reactive towards nucleophilic addition reaction?

Which metal in the first series of transition metals exhibits +1 oxidation state most frequently and why?

39. The density of a gaseous element is 5 times that of oxygenunder identical conditions. If the molecule is triatomicWhat will be its atomic mass?

Which of the following is in the correct order of their bond length

Is a given metal is able to displace hydrogen or not?

Which one of the following is not an unsaturated compound?

Anaromatic compound ‘A’ on treatment with aqueous ammoniaand heatingformscompound ‘B’ which on heating with Br2and KOH forms a compound ‘C’ofmolecular formula C6H7N.Write the structures and IUPAC names of compounds A, B and C.

What is the place value of 7 in 528.8397 ?

18 For the following cell reaction Cu(s)+2Ag+(aq)>2Ag(s)+Cu+2(aq) E^° cell is 0.46V and 300k and 0.50V at 340k then what will be entropy change 1)96.5J/k 2)193J/k 3)386J/k 4)none

the ratio of number of collisions per second at the walls of containers by He and O2 gas molecules kept at same volume and temperature is

Find the number of moles of NaOH required to neutralize 448 g equimolar mixture of Na2C2O4 and H2C2O4.

Which pair of isomerism is not possible together?

Which form of cis-1, 4-cyclohexane diol is most stable?

2.5 mL of 25M weak monoacidic base (Kb=1×10−12) at 25oC is titrated with 215M HCl in water at 25oC. The concentration of H+ at equivalence point is (Kw=1×10−14 at 25oC)