46295 + Interview Questions in Chemistry

1.	The formula of aluminium oxide is Al2O3. If aluminium forms its chloride, what will be the formula of that compound?
Answer» The formula of aluminium oxide is ${Al}_{2} O_{3}$ . If aluminium forms its chloride, what will be the formula of that compound?

Discussion

2.	What are the raw materials used in solvay's process for the preparation of sodium carbonate?
Answer» What are the raw materials used in solvay's process for the preparation of sodium carbonate?

Discussion

3.	If an hypothetical metal crystallises in a face centered cubic unit cell having density (d)=100 g/cm3 and edge length of the unit cell is 100 pm, then,the number of atoms in 100 g of that fcc crystal is:[1 Mark]
Answer» If an hypothetical metal crystallises in a face centered cubic unit cell having density $(d) = 100 {g/cm}^{3}$ and edge length of the unit cell is $100 pm$ , then, the number of atoms in $100 g$ of that fcc crystal is: [1 Mark]

Discussion

4.	95.A sample of gas is at 0, to what temperature must it be raised in order to double the RMS speed of its molecules
Answer» 95.A sample of gas is at 0, to what temperature must it be raised in order to double the RMS speed of its molecules

Discussion

5.	In the reaction H−C≡CH(1) NaNH2liq.NH3−−−−−−−−−→(2) CH3CH2Br X(1) NaNH2liq.NH3−−−−−−−−−→(2) CH3CH2Br Y X and Y are
Answer» In the reaction $H - C \equiv C H \frac{(1) N a N H_{2}}{l i q . N H_{3}} - -------- \to (2) C H_{3} C H_{2} B r X \frac{(1) N a N H_{2}}{l i q . N H_{3}} - -------- \to (2) C H_{3} C H_{2} B r Y$ X and Y are

5.

In the reaction H−C≡CH(1) NaNH2liq.NH3−−−−−−−−−→(2) CH3CH2Br X(1) NaNH2liq.NH3−−−−−−−−−→(2) CH3CH2Br Y X and Y are

Answer»

In the reaction

$H - C \equiv C H \frac{(1) N a N H_{2}}{l i q . N H_{3}} - -------- \to (2) C H_{3} C H_{2} B r X \frac{(1) N a N H_{2}}{l i q . N H_{3}} - -------- \to (2) C H_{3} C H_{2} B r Y$

X and Y are

Discussion

6.	How many moles of HCl will be present in 100 ml of a solution HCl by mass? a.0.50 b.0.60 c 0.80 d.0.1
Answer» How many moles of HCl will be present in 100 ml of a solution HCl by mass? a.0.50 b.0.60 c 0.80 d.0.1

Discussion

7.	how to know whether acidic hydrogen is present infollowing- i.CH3-C≡ C-CH3 ii.CH3-CH=CH2 iii.CH3-CH=CH-CH3 iv.CH3-CH2-CH2-CH
Answer» how to know whether acidic hydrogen is present infollowing- i.CH3-C≡ C-CH3 ii.CH3-CH=CH2 iii.CH3-CH=CH-CH3 iv.CH3-CH2-CH2-CH

Discussion

8.	A drop of olive oil of radius 0.30 nm spreads into a nearly circular film of radius 12cm on the water surface. Estimate the molecular size of olive oil.
Answer» A drop of olive oil of radius 0.30 nm spreads into a nearly circular film of radius 12cm on the water surface. Estimate the molecular size of olive oil.

Discussion

9.	The rate of steady flow of a liquid through a capillary tube V under pressure difference P. This tube is connected with another tube of the same length but half radius in (a) series (b) parallel.Find the rate of flow through combination if same pressure difference is maintained across the combination.
Answer» The rate of steady flow of a liquid through a capillary tube V under pressure difference P. This tube is connected with another tube of the same length but half radius in (a) series (b) parallel. Find the rate of flow through combination if same pressure difference is maintained across the combination.

Discussion

10.	3 moles of a gas mixture having volume V and temperature T is compressed to 15th of the initial volume. Find the change in its adiabatic compressibility, if the gas obeys PV19/13=constant [R=8.3 J/mol-K]
Answer» $3$ moles of a gas mixture having volume $V$ and temperature $T$ is compressed to ${\frac{1}{5}}^{t h}$ of the initial volume. Find the change in its adiabatic compressibility, if the gas obeys $P V^{19 / 13} = constant$ $[R = 8.3 J/mol-K]$

Discussion

11.	What is rust? How is it formed?
Answer» What is rust? How is it formed?

Discussion

12.	induced charge q can never be greater than the inducing charge Q. why ?
Answer» induced charge q can never be greater than the inducing charge Q. why ?

Discussion

13.	How can we calculate molality of pure water if it's density is 0.936gm/ml?
Answer» How can we calculate molality of pure water if it's density is 0.936gm/ml?

Discussion

14.	The number of bonding electron pairs in N2 on the basis of molecular orbital theory is:
Answer» The number of bonding electron pairs in $N_{2}$ on the basis of molecular orbital theory is:

Discussion

15.	55. Relation between: 1)-molarity and molality. 2)-mole fraction and molality. 3)-mole fraction and molarity.
Answer» 55. Relation between: 1)-molarity and molality. 2)-mole fraction and molality. 3)-mole fraction and molarity.

Discussion

16.	How many moles of MeMgI will consumed by one mole of the following compound?
Answer» How many moles of $M e M g I$ will consumed by one mole of the following compound?

Discussion

17.	find the equilibrium cons†an t(K) for the following 1. 3NH2+4H2 gives 6NH3 2. 1/2N2 + 3/2H2 gives NH3 3. 4NH3 gives 2N2+ 6H2 4. 2NH3 gives N2 +3H
Answer» find the equilibrium cons†an t(K) for the following 1. 3NH2+4H2 gives 6NH3 2. 1/2N2 + 3/2H2 gives NH3 3. 4NH3 gives 2N2+ 6H2 4. 2NH3 gives N2 +3H

Discussion

18.	ntnttntttnttttIf three electrons could be accomodated in an orbital, then the element with atomic no 50 will belong to :-nttntnn ntnttntttnttttnttttt(1)nttttnttttt4thperiod & p blockntttntttnttttnttttt(2)nttttnttttt5thperiod & s blockntttntttnttttnttttt(3)nttttnttttt4thperiod & d blockntttntttnttttnttttt(4)nttttnttttt5thperiod & p blockntttnttntnn ntn
Answer» ntnttntttnttttIf three electrons could be accomodated in an orbital, then the element with atomic no 50 will belong to :-nttntnn ntnttntttnttttnttttt(1)nttttnttttt4thperiod & p blockntttntttnttttnttttt(2)nttttnttttt5thperiod & s blockntttntttnttttnttttt(3)nttttnttttt4thperiod & d blockntttntttnttttnttttt(4)nttttnttttt5thperiod & p blockntttnttntnn ntn

Discussion

19.	A rigid container with thermally insulated walls contains a coil of resistance 100 ohm, carrying current 1A. Change in internal energy after 5 min will be (a) 10 kJ b) zero (c) 20 kJ (d) 30 kJ
Answer» A rigid container with thermally insulated walls contains a coil of resistance 100 ohm, carrying current 1A. Change in internal energy after 5 min will be (a) 10 kJ b) zero (c) 20 kJ (d) 30 kJ

Discussion

20.	Arrange the protons in the order of increasing acidic strengths :
Answer» Arrange the protons in the order of increasing acidic strengths :

Discussion

21.	4. When the cell will work ? When E_{cell} is positive or E^° cell is positive
Answer» 4. When the cell will work ? When E_{cell} is positive or E^° cell is positive

Discussion

22.	explain acidic nature of bromo phenols?
Answer» explain acidic nature of bromo phenols?

Discussion

23.	A certain amount of an ideal monatomic gas needs 20 J of heat energy to raise its temperature by 10^° C at cons†an t pressure. The heat needed for the same temperature rise at cons†an t volume will be
Answer» A certain amount of an ideal monatomic gas needs 20 J of heat energy to raise its temperature by 10^° C at cons†an t pressure. The heat needed for the same temperature rise at cons†an t volume will be

Discussion

24.	A binary solution of ethanol and n-heptane is an example of
Answer» A binary solution of ethanol and n-heptane is an example of

Discussion

25.	A length scale (l) depends on the permittivity (ε) of a dielectric material, Boltzmann constant (kB), the absolute temperature (T), the number per unit volume(n) of certain charged particles and the charge (q) carried by each of the particles. Which of the following expression(s) for l is(are) dimensionally correct?
Answer» A length scale $(l)$ depends on the permittivity $(ε)$ of a dielectric material, Boltzmann constant $(k_{B})$ , the absolute temperature $(T)$ , the number per unit volume $(n)$ of certain charged particles and the charge $(q)$ carried by each of the particles. Which of the following expression(s) for $l$ is(are) dimensionally correct?

Discussion

26.	A 10%(w/w)by mass NaOH is mixed with 20%(w/w)NaOH then calculate the resulant molality of the solution?
Answer» A 10%(w/w)by mass NaOH is mixed with 20%(w/w)NaOH then calculate the resulant molality of the solution?

Discussion

27.	Things which coincide with one another are equal to one anotherWhat's the meaning of this line
Answer» Things which coincide with one another are equal to one another What's the meaning of this line

Discussion

28.	an alkene on reaction with acidified KMnO4 gives 4-oxo pentanoic acid the alkene is1.pentene2.2-pentene3.1-methyl cyclobutene4.1,2-dimethylcyclopropane
Answer» an alkene on reaction with acidified KMnO4 gives 4-oxo pentanoic acid the alkene is 1.pentene 2.2-pentene 3.1-methyl cyclobutene 4.1,2-dimethylcyclopropane

Discussion

29.	2 point masses M and 4M are fixed at a certain separation. The variation of gravitational potential due to them as we move from M towards 4M
Answer» 2 point masses M and 4M are fixed at a certain separation. The variation of gravitational potential due to them as we move from M towards 4M

Discussion

30.	what is the energy associated with 3rd energy shell of hydrogen atom ? solve this with the formul
Answer» what is the energy associated with 3rd energy shell of hydrogen atom ? solve this with the formul

Discussion

31.	why l , m , n , s of electron cannot be same in a shell according to pavlov theory
Answer» why l , m , n , s of electron cannot be same in a shell according to pavlov theory

Discussion

32.	Trouve les phrases et récris-les :1. Son/organise/ une/ pour/ son/ fête/ ami/ anniversaire.2. Studio/ ton/ est/ confortable/-il/ nouveau?3. Au/ à/ un/ coup de fil / donne/ Ali/ son/ père/ Sénégal.4. Les/ aiment/ zapper/ jeunes.5. Le/ vous/ répondeur/ sur/ tombez.
Answer» Trouve les phrases et récris-les : 1. Son/organise/ une/ pour/ son/ fête/ ami/ anniversaire. 2. Studio/ ton/ est/ confortable/-il/ nouveau? 3. Au/ à/ un/ coup de fil / donne/ Ali/ son/ père/ Sénégal. 4. Les/ aiment/ zapper/ jeunes. 5. Le/ vous/ répondeur/ sur/ tombez.

Discussion

33.	the rate constant is numerically the same for three reaction of first,second,thrid order reaction.which of the is true for rate of reaction ,if concentration of reaction is greater than 1m?a.r1=r2=r3b.r1r2>r3d.all of these
Answer» the rate constant is numerically the same for three reaction of first,second,thrid order reaction.which of the is true for rate of reaction ,if concentration of reaction is greater than 1m? a.r1=r2=r3 b.r1r2>r3 d.all of these

Discussion

34.	Which of the following reactions are correct?
Answer» Which of the following reactions are correct?

Discussion

35.	The temp (T) of ine mole of an ideal gas varies with its volume (V) as T= α V^{3 }+ β V^2, where α and β are +ve cons†an ts. The max pressure of gas during this process is (1) αβ/2R (2) β^2R/4α (3) (α+β)R/2β^2 (4) α^2R/
Answer» The temp (T) of ine mole of an ideal gas varies with its volume (V) as T= α V^{3 }+ β V^2, where α and β are +ve cons†an ts. The max pressure of gas during this process is (1) αβ/2R (2) β^2R/4α (3) (α+β)R/2β^2 (4) α^2R/

Discussion

36.	Mam, "test series" for NEET is not opening.kindly do the needful
Answer» Mam, "test series" for NEET is not opening.kindly do the needful

Discussion

37.	A potter working on his wheel shaped a lump of clay into a pot. He then baked the pot in an oven. Do these two acts lead to the same kind of changes or different? Give your opinion and justify your answer.
Answer» A potter working on his wheel shaped a lump of clay into a pot. He then baked the pot in an oven. Do these two acts lead to the same kind of changes or different? Give your opinion and justify your answer.

Discussion

38.	The Functional isomer of 'Y' is
Answer» The Functional isomer of 'Y' is

Discussion

39.	Calculate volume of O2 at NTP required for the complete burning of 12 gram of Sulphur?
Answer» Calculate volume of O2 at NTP required for the complete burning of 12 gram of Sulphur?

Discussion

40.	Which is more acidic : cyclohexanol or cyclohex-1-enol ?
Answer» Which is more acidic : cyclohexanol or cyclohex-1-enol ?

Discussion

41.	Chemical formula of cellulose
Answer» Chemical formula of cellulose

Discussion

42.	Compound which has the highest dipole moment is[0.77 Mark]
Answer» Compound which has the highest dipole moment is [0.77 Mark]

Discussion

43.	ASSERTION: 2-bromo-2 methyl bu†an e + (CH3)3CO-(base tertiary butoxide) =? major product obtained in the reaction is less substituted alkene(2-methyl but-1-ene), not more substituted alkene(2-methyl but-2-ene). REASON : The dehydroha\log enation of an alkyl halide by a base like C2H5ONa gives more substituted olfine(as per Saytzeff's rule), however dehydroha\log enation with a bulky base like tertiary butoxide gives a less substituted olefine as the major product.
Answer» ASSERTION: 2-bromo-2 methyl bu†an e + (CH3)3CO-(base tertiary butoxide) =? major product obtained in the reaction is less substituted alkene(2-methyl but-1-ene), not more substituted alkene(2-methyl but-2-ene). REASON : The dehydroha\log enation of an alkyl halide by a base like C2H5ONa gives more substituted olfine(as per Saytzeff's rule), however dehydroha\log enation with a bulky base like tertiary butoxide gives a less substituted olefine as the major product.

Discussion

44.	Answer the following questions: (a) When a low flying aircraft passes overhead, we sometimes notice a slight shaking of the picture on our TV screen. Suggest a possible explanation. (b) As you have learnt in the text, the principle of linear superposition of wave displacement is basic to understanding intensity distributions in diffraction and interference patterns. What is the justification of this principle?
Answer» Answer the following questions: (a) When a low flying aircraft passes overhead, we sometimes notice a slight shaking of the picture on our TV screen. Suggest a possible explanation. (b) As you have learnt in the text, the principle of linear superposition of wave displacement is basic to understanding intensity distributions in diffraction and interference patterns. What is the justification of this principle?

44.

Answer the following questions: (a) When a low flying aircraft passes overhead, we sometimes notice a slight shaking of the picture on our TV screen. Suggest a possible explanation. (b) As you have learnt in the text, the principle of linear superposition of wave displacement is basic to understanding intensity distributions in diffraction and interference patterns. What is the justification of this principle?

Answer»

Answer
the following questions:

(a) When
a low flying aircraft passes overhead, we sometimes notice

a
slight shaking of the picture on our TV screen. Suggest a possible
explanation.

(b) As
you have learnt in the text, the principle of linear superposition of
wave displacement is basic to understanding intensity distributions
in diffraction and interference patterns. What is the justification
of this principle?

Discussion

45.	Which of the following will not show tautomerism:
Answer» Which of the following will not show tautomerism:

Discussion

46.	What is radioactive element
Answer» What is radioactive element

Discussion

47.	1.8×10^22 atoms of Co2are present in a sample then find out no. Of gm molecules, no gm atoms, no. molecules, no. Of e.
Answer» 1.8×10^22 atoms of Co2are present in a sample then find out no. Of gm molecules, no gm atoms, no. molecules, no. Of e.

Discussion

48.	The option(s) with only amphoteric oxides is(are)
Answer» The option(s) with only amphoteric oxides is(are)

Discussion

49.	What is 10^-7 called?
Answer» What is 10^-7 called?

Discussion

50.	Question 4:(i) What happens when an inflated air balloon is pricked with a pin? Name the property of the gaseous state exhibited by this observation.(ii) Which of the following diffuses faster?Water vapour, wax or, ethyl alcohol.
Answer» Question 4: (i) What happens when an inflated air balloon is pricked with a pin? Name the property of the gaseous state exhibited by this observation. (ii) Which of the following diffuses faster? Water vapour, wax or, ethyl alcohol.

50.

Question 4:(i) What happens when an inflated air balloon is pricked with a pin? Name the property of the gaseous state exhibited by this observation.(ii) Which of the following diffuses faster?Water vapour, wax or, ethyl alcohol.

Answer»

Question 4:

(i) What happens when an inflated air balloon is pricked with a pin? Name the property of the gaseous state exhibited by this observation.

(ii) Which of the following diffuses faster?

Water vapour, wax or, ethyl alcohol.

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

The formula of aluminium oxide is Al2O3. If aluminium forms its chloride, what will be the formula of that compound?

What are the raw materials used in solvay's process for the preparation of sodium carbonate?

If an hypothetical metal crystallises in a face centered cubic unit cell having density (d)=100 g/cm3 and edge length of the unit cell is 100 pm, then,the number of atoms in 100 g of that fcc crystal is:[1 Mark]

95.A sample of gas is at 0, to what temperature must it be raised in order to double the RMS speed of its molecules

In the reaction H−C≡CH(1) NaNH2liq.NH3−−−−−−−−−→(2) CH3CH2Br X(1) NaNH2liq.NH3−−−−−−−−−→(2) CH3CH2Br Y X and Y are

How many moles of HCl will be present in 100 ml of a solution HCl by mass? a.0.50 b.0.60 c 0.80 d.0.1

how to know whether acidic hydrogen is present infollowing- i.CH3-C≡ C-CH3 ii.CH3-CH=CH2 iii.CH3-CH=CH-CH3 iv.CH3-CH2-CH2-CH

A drop of olive oil of radius 0.30 nm spreads into a nearly circular film of radius 12cm on the water surface. Estimate the molecular size of olive oil.

3 moles of a gas mixture having volume V and temperature T is compressed to 15th of the initial volume. Find the change in its adiabatic compressibility, if the gas obeys PV19/13=constant [R=8.3 J/mol-K]

What is rust? How is it formed?

induced charge q can never be greater than the inducing charge Q. why ?

How can we calculate molality of pure water if it's density is 0.936gm/ml?

The number of bonding electron pairs in N2 on the basis of molecular orbital theory is:

55. Relation between: 1)-molarity and molality. 2)-mole fraction and molality. 3)-mole fraction and molarity.

How many moles of MeMgI will consumed by one mole of the following compound?

find the equilibrium cons†an t(K) for the following 1. 3NH2+4H2 gives 6NH3 2. 1/2N2 + 3/2H2 gives NH3 3. 4NH3 gives 2N2+ 6H2 4. 2NH3 gives N2 +3H

A rigid container with thermally insulated walls contains a coil of resistance 100 ohm, carrying current 1A. Change in internal energy after 5 min will be (a) 10 kJ b) zero (c) 20 kJ (d) 30 kJ

Arrange the protons in the order of increasing acidic strengths :

4. When the cell will work ? When E_{cell} is positive or E^° cell is positive

explain acidic nature of bromo phenols?

A certain amount of an ideal monatomic gas needs 20 J of heat energy to raise its temperature by 10^° C at cons†an t pressure. The heat needed for the same temperature rise at cons†an t volume will be

A binary solution of ethanol and n-heptane is an example of

A 10%(w/w)by mass NaOH is mixed with 20%(w/w)NaOH then calculate the resulant molality of the solution?

Things which coincide with one another are equal to one anotherWhat's the meaning of this line

an alkene on reaction with acidified KMnO4 gives 4-oxo pentanoic acid the alkene is1.pentene2.2-pentene3.1-methyl cyclobutene4.1,2-dimethylcyclopropane

2 point masses M and 4M are fixed at a certain separation. The variation of gravitational potential due to them as we move from M towards 4M

what is the energy associated with 3rd energy shell of hydrogen atom ? solve this with the formul

why l , m , n , s of electron cannot be same in a shell according to pavlov theory

Trouve les phrases et récris-les :1. Son/organise/ une/ pour/ son/ fête/ ami/ anniversaire.2. Studio/ ton/ est/ confortable/-il/ nouveau?3. Au/ à/ un/ coup de fil / donne/ Ali/ son/ père/ Sénégal.4. Les/ aiment/ zapper/ jeunes.5. Le/ vous/ répondeur/ sur/ tombez.

the rate constant is numerically the same for three reaction of first,second,thrid order reaction.which of the is true for rate of reaction ,if concentration of reaction is greater than 1m?a.r1=r2=r3b.r1r2&gt;r3d.all of these

Which of the following reactions are correct?

The temp (T) of ine mole of an ideal gas varies with its volume (V) as T= α V^{3 }+ β V^2, where α and β are +ve cons†an ts. The max pressure of gas during this process is (1) αβ/2R (2) β^2R/4α (3) (α+β)R/2β^2 (4) α^2R/

Mam, "test series" for NEET is not opening.kindly do the needful

A potter working on his wheel shaped a lump of clay into a pot. He then baked the pot in an oven. Do these two acts lead to the same kind of changes or different? Give your opinion and justify your answer.

The Functional isomer of 'Y' is

Calculate volume of O2 at NTP required for the complete burning of 12 gram of Sulphur?

Which is more acidic : cyclohexanol or cyclohex-1-enol ?

Chemical formula of cellulose

Compound which has the highest dipole moment is[0.77 Mark]

Which of the following will not show tautomerism:

What is radioactive element

1.8×10^22 atoms of Co2are present in a sample then find out no. Of gm molecules, no gm atoms, no. molecules, no. Of e.

The option(s) with only amphoteric oxides is(are)

What is 10^-7 called?

Question 4:(i) What happens when an inflated air balloon is pricked with a pin? Name the property of the gaseous state exhibited by this observation.(ii) Which of the following diffuses faster?Water vapour, wax or, ethyl alcohol.

the rate constant is numerically the same for three reaction of first,second,thrid order reaction.which of the is true for rate of reaction ,if concentration of reaction is greater than 1m?a.r1=r2=r3b.r1r2>r3d.all of these