46295 + Interview Questions in Chemistry

1.	If the solution boils at a temperature T1 and the solvent at a temperature T2 the elevation of boiling point is given by
Answer» If the solution boils at a temperature T₁ and the solvent at a temperature T₂the elevation of boiling point is given by

Discussion

2.	Purification of aluminum by electrolytic refining is known as
Answer» Purification of aluminum by electrolytic refining is known as

Discussion

3.	what are some tips you would give for preparing for JEE mains and Adv.?
Answer» what are some tips you would give for preparing for JEE mains and Adv.?

Discussion

4.	Equal moles of benzene and toluene and makes the vapour pressure of benzene and toluene in pure state are 700 and 600 mmhg respectively the mole fraction of benzene in vapour state is
Answer» Equal moles of benzene and toluene and makes the vapour pressure of benzene and toluene in pure state are 700 and 600 mmhg respectively the mole fraction of benzene in vapour state is

Discussion

5.	XeF6 is
Answer» $X e F_{6}$ is

Discussion

6.	How many of the given solvents favour E2 mechanism?(i) DMSO (ii) Ethanol (iii) Acetone (iv) Water
Answer» How many of the given solvents favour $E 2$ mechanism? (i) DMSO (ii) Ethanol (iii) Acetone (iv) Water

Discussion

7.	In hydrogen number of shell is 1 or infinite. Comment
Answer» In hydrogen number of shell is 1 or infinite. Comment

Discussion

8.	The molar conductivity of 0.05 M BaCl_2 solution at 25^° C is 223 Ω^{-1}cm^2 mol^{-1}. What is its conductivity ?
Answer» The molar conductivity of 0.05 M BaCl_2 solution at 25^° C is 223 Ω^{-1}cm^2 mol^{-1}. What is its conductivity ?

Discussion

9.	Why I- negative is most reactive nucleophile in polar protic solvent while in polar aprotic solvents F-negative is most reactive nucleophile ?
Answer» Why I- negative is most reactive nucleophile in polar protic solvent while in polar aprotic solvents F-negative is most reactive nucleophile ?

Discussion

10.	Among the following, the number of compounds which do not hydrolyze NF3,NCl3,PCl3,PCl5,CCl4,SiCl4,BiCl3,NaCl,FeCl3
Answer» Among the following, the number of compounds which do not hydrolyze $N F_{3}, N C l_{3}, P C l_{3}, P C l_{5}, C C l_{4}, S i C l_{4}, B i C l_{3}, N a C l, F e C l_{3}$

10.

Among the following, the number of compounds which do not hydrolyze NF3,NCl3,PCl3,PCl5,CCl4,SiCl4,BiCl3,NaCl,FeCl3

Answer»

Among the following, the number of compounds which do not hydrolyze

$N F_{3}, N C l_{3}, P C l_{3}, P C l_{5}, C C l_{4}, S i C l_{4}, B i C l_{3}, N a C l, F e C l_{3}$

Discussion

11.	Which of the following is oxidation?
Answer» Which of the following is oxidation?

Discussion

12.	Electronic configuration of anion in sodium hydridewill beNa81(1) 1s2(2) 1s1BH(4) 1s 2s1(3) 1s
Answer» Electronic configuration of anion in sodium hydridewill beNa81(1) 1s2(2) 1s1BH(4) 1s 2s1(3) 1s

Discussion

13.	Hybridization of AsF−6
Answer» Hybridization of $A s F_{6}^{-}$

Discussion

14.	In the given reaction, [X] will be:
Answer» In the given reaction, [X] will be:

Discussion

15.	17. What will be the product formed when 3,4-Dimethyl pentanol is treated with concentrated sulphuric acid?
Answer» 17. What will be the product formed when 3,4-Dimethyl pentanol is treated with concentrated sulphuric acid?

Discussion

16.	CH_3-CH=CH-CH_2-CH=CH_2\xrightarrow[{hv}]{NBS}?
Answer» CH_3-CH=CH-CH_2-CH=CH_2\xrightarrow[{hv}]{NBS}?

Discussion

17.	Mass and volume of a block are measured as 22.42 g and 4.7 cm^3. The maximum possible error in density is A 0.6% B 2.2% C 2.8 % D 3.2%
Answer» Mass and volume of a block are measured as 22.42 g and 4.7 cm^3. The maximum possible error in density is A 0.6% B 2.2% C 2.8 % D 3.2%

Discussion

18.	What is the difference between carbaldehyde and benzaldehyde?
Answer» What is the difference between carbaldehyde and benzaldehyde?

Discussion

19.	Which of the following metals(s) is/are metalloids?
Answer» Which of the following metals(s) is/are metalloids?

Discussion

20.	Osmotic pressure of 1 mole NACL at STP?
Answer» Osmotic pressure of 1 mole NACL at STP?

Discussion

21.	34. Decreasing Stability order of alkali metal fluride and iodide?
Answer» 34. Decreasing Stability order of alkali metal fluride and iodide?

Discussion

22.	The velocity of an electron in 2nd orbit of double ionized sodium atom (Z=11) is v. The velocity of an electron in its fifth orbit will be
Answer» The velocity of an electron in $2^{n d}$ orbit of double ionized sodium atom $(Z = 11)$ is $v .$ The velocity of an electron in its fifth orbit will be

Discussion

23.	Number of degenerated orbitals in second shell of He+ ion
Answer» Number of degenerated orbitals in second shell of He+ ion

Discussion

24.	An unknown compound A dissociates at 500∘C to give products as follows: A(g)⇌B(g)+C(g)+D(g) Vapour density of the equilibrium mixture is 60 when it dissociates to the extent to 20%. What will be the molecular weight (in grams) of Compound A
Answer» An unknown compound A dissociates at $500^{\circ} C$ to give products as follows: $A (g) ⇌ B (g) + C (g) + D (g)$ Vapour density of the equilibrium mixture is 60 when it dissociates to the extent to $20^{%}$ . What will be the molecular weight (in grams) of Compound A

Discussion

25.	what is the dis†an ce between two consecutive layers in ccp lattice
Answer» what is the dis†an ce between two consecutive layers in ccp lattice

Discussion

26.	Half life period of a first order reaction is 10 min. Starting with initial concentration 12M, the rate after 20 min is
Answer» Half life period of a first order reaction is 10 min. Starting with initial concentration 12M, the rate after 20 min is

Discussion

27.	How to convert methane to iodomethane.
Answer» How to convert methane to iodomethane.

Discussion

28.	32.Name all the isomers of C6H14.
Answer» 32.Name all the isomers of C6H14.

Discussion

29.	What is the difference between water and acidified water?
Answer» What is the difference between water and acidified water?

Discussion

30.	Find heat developed if I=i°sin(omega)t ie AC current
Answer» Find heat developed if I=i°sin(omega)t ie AC current

Discussion

31.	When Na and Li are placed in dry air, we get:
Answer» When $N a$ and $L i$ are placed in dry air, we get:

Discussion

32.	The highest denticity shown by ethylenediaminetriacetate ligand is:
Answer» The highest denticity shown by ethylenediaminetriacetate ligand is:

Discussion

33.	What will be the correct order for the wavelengths of absorption in the visible region for the following: [Ni(NO2)6]4−,[Ni(NH3)6]2+,[Ni(H2O)6]2+?
Answer» What will be the correct order for the wavelengths of absorption in the visible region for the following: $[N i (N O_{2})_{6}]^{4 -}, [N i (N H_{3})_{6}]^{2 +}, [N i (H_{2} O)_{6}]^{2 +} ?$

Discussion

34.	Whatis the basicity of H3PO4?
Answer» What is the basicity of H₃PO₄?

Discussion

35.	Hybridisation involves the mixing of orbitals having comparable energies of same atom. Hybridised orbitals perform efficient overlapping than overlapping by pure s, p or d orbitals.Which of the following is not correctly match between given species and type of overlapping?
Answer» Hybridisation involves the mixing of orbitals having comparable energies of same atom. Hybridised orbitals perform efficient overlapping than overlapping by pure $s, p$ or $d$ orbitals. Which of the following is not correctly match between given species and type of overlapping?

Discussion

36.	Me2SiCl2 on hydrolysis will produce
Answer» $M e_{2} S i C l_{2}$ on hydrolysis will produce

Discussion

37.	how to find the number of octahedral voids in nacl crystal and zns crystal?
Answer» how to find the number of octahedral voids in nacl crystal and zns crystal?

Discussion

38.	Question 41Arun has prepared 0.01% (by mass) solution of sodium chloride in water. Which of the following correctly represents the composition of the solutions?(a) 1.00 g of NaCI + 100 g of water(b) 0.11 g of NaCI + 100 g of water(c) 0.01 g of NaCI + 99.99 g of water(d) 0.10 g of NaCI + 99.90 g of water
Answer» Question 41 Arun has prepared 0.01% (by mass) solution of sodium chloride in water. Which of the following correctly represents the composition of the solutions? (a) 1.00 g of NaCI + 100 g of water (b) 0.11 g of NaCI + 100 g of water (c) 0.01 g of NaCI + 99.99 g of water (d) 0.10 g of NaCI + 99.90 g of water

Discussion

39.	Elements having highest density -
Answer» Elements having highest density -

Discussion

40.	62. How to do hydrolysis of elements lacking vacant orbital? Or or how h2co3 is formed on hydrolysis Of C(+4) or CCl4. even if it belonged to 2nd period lacking vacant d orbital?
Answer» 62. How to do hydrolysis of elements lacking vacant orbital? Or or how h2co3 is formed on hydrolysis Of C(+4) or CCl4. even if it belonged to 2nd period lacking vacant d orbital?

Discussion

41.	Calculate the elevation in boiling point for 12 g of AB2 dissolved in 1 kg of water as solvent if AB2 is fully ionised? Given: AB2 dissociates as:AB2→A2++2B−(Kb=0.52 K kg mol−1Molar mass of AB2=120 g/mol)
Answer» Calculate the elevation in boiling point for $12 g$ of $A B_{2}$ dissolved in $1 k g$ of water as solvent if $A B_{2}$ is fully ionised? Given: $A B_{2}$ dissociates as: $A B_{2} \to A^{2 +} + 2 B^{-}$ ( $K_{b} = 0.52 K k g m o l^{- 1}$ Molar mass of $A B_{2} = 120 g / m o l$ )

Discussion

42.	iron on reaction with hcl forms fecl2 and not fecl3.why?
Answer» iron on reaction with hcl forms fecl2 and not fecl3.why?

Discussion

43.	In a neutral or faintly alkaline solution, 8 moles of permanganate anion quantitatively oxidized thiosulphate anions to produce X moles of a sulphur containing product. The magnitude of X is
Answer» In a neutral or faintly alkaline solution, 8 moles of permanganate anion quantitatively oxidized thiosulphate anions to produce X moles of a sulphur containing product. The magnitude of X is

Discussion

44.	Ozonolysis products of an olefin are OHC−CHO and OHC−CH2−CH2−CHO, the olefin is:
Answer» Ozonolysis products of an olefin are $O H C - C H O$ and $O H C - C H_{2} - C H_{2} - C H O,$ the olefin is:

Discussion

45.	if Na is number density of acceptor atoms added and Nd is number of donor atoms added to a semiconductor ,ne and nh are the no. density of electrons and holes in it then1]ne=Nd, nh=Na2]ne+Na=nh+Nd
Answer» if Na is number density of acceptor atoms added and Nd is number of donor atoms added to a semiconductor ,ne and nh are the no. density of electrons and holes in it then 1]ne=Nd, nh=Na 2]ne+Na=nh+Nd

Discussion

46.	The mass of BaCO3 produced when excess of CO2 is bubbled through a solution of 0.205 mole Ba(OH)2 solution, is:(Take molar mass of Ba=137 g/mol)Ba(OH)2+CO2→BaCO3+H2O
Answer» The mass of $B a C O_{3}$ produced when excess of $C O_{2}$ is bubbled through a solution of $0.205 mole B a (O H)_{2}$ solution, is: (Take molar mass of $B a = 137 g/mol$ ) $B a (O H)_{2} + C O_{2} \to B a C O_{3} + H_{2} O$

Discussion

47.	What is the difference between alkanes alkanes and alkyls
Answer» What is the difference between alkanes alkanes and alkyls

Discussion

48.	If α,β and γ are the coefficient of linear, areal and volume expansion respectively, then which of the following options correctly represent the relation between them?
Answer» If $α, β$ and $γ$ are the coefficient of linear, areal and volume expansion respectively, then which of the following options correctly represent the relation between them?

Discussion

49.	what is the role of peroxide in peroxide effect ?
Answer» what is the role of peroxide in peroxide effect ?

Discussion

50.	Based on solute-solvent interactions, arrange the following in order of increasing solubility in n-octane and explain. Cyclohexane, KCl, CH3OH, CH3CN.
Answer» Based on solute-solvent interactions, arrange the following in order of increasing solubility in n-octane and explain. Cyclohexane, KCl, CH₃OH, CH₃CN.

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

If the solution boils at a temperature T1 and the solvent at a temperature T2 the elevation of boiling point is given by

Purification of aluminum by electrolytic refining is known as

what are some tips you would give for preparing for JEE mains and Adv.?

Equal moles of benzene and toluene and makes the vapour pressure of benzene and toluene in pure state are 700 and 600 mmhg respectively the mole fraction of benzene in vapour state is

XeF6 is

How many of the given solvents favour E2 mechanism?(i) DMSO (ii) Ethanol (iii) Acetone (iv) Water

In hydrogen number of shell is 1 or infinite. Comment

The molar conductivity of 0.05 M BaCl_2 solution at 25^° C is 223 Ω^{-1}cm^2 mol^{-1}. What is its conductivity ?

Why I- negative is most reactive nucleophile in polar protic solvent while in polar aprotic solvents F-negative is most reactive nucleophile ?

Among the following, the number of compounds which do not hydrolyze NF3,NCl3,PCl3,PCl5,CCl4,SiCl4,BiCl3,NaCl,FeCl3

Which of the following is oxidation?

Electronic configuration of anion in sodium hydridewill beNa81(1) 1s2(2) 1s1BH(4) 1s 2s1(3) 1s

Hybridization of AsF−6

In the given reaction, [X] will be:

17. What will be the product formed when 3,4-Dimethyl pentanol is treated with concentrated sulphuric acid?

CH_3-CH=CH-CH_2-CH=CH_2\xrightarrow[{hv}]{NBS}?

Mass and volume of a block are measured as 22.42 g and 4.7 cm^3. The maximum possible error in density is A 0.6% B 2.2% C 2.8 % D 3.2%

What is the difference between carbaldehyde and benzaldehyde?

Which of the following metals(s) is/are metalloids?

Osmotic pressure of 1 mole NACL at STP?

34. Decreasing Stability order of alkali metal fluride and iodide?

The velocity of an electron in 2nd orbit of double ionized sodium atom (Z=11) is v. The velocity of an electron in its fifth orbit will be

Number of degenerated orbitals in second shell of He+ ion

An unknown compound A dissociates at 500∘C to give products as follows: A(g)⇌B(g)+C(g)+D(g) Vapour density of the equilibrium mixture is 60 when it dissociates to the extent to 20%. What will be the molecular weight (in grams) of Compound A

what is the dis†an ce between two consecutive layers in ccp lattice

Half life period of a first order reaction is 10 min. Starting with initial concentration 12M, the rate after 20 min is

How to convert methane to iodomethane.

32.Name all the isomers of C6H14.

What is the difference between water and acidified water?

Find heat developed if I=i°sin(omega)t ie AC current

When Na and Li are placed in dry air, we get:

The highest denticity shown by ethylenediaminetriacetate ligand is:

What will be the correct order for the wavelengths of absorption in the visible region for the following: [Ni(NO2)6]4−,[Ni(NH3)6]2+,[Ni(H2O)6]2+?

Whatis the basicity of H3PO4?

Hybridisation involves the mixing of orbitals having comparable energies of same atom. Hybridised orbitals perform efficient overlapping than overlapping by pure s, p or d orbitals.Which of the following is not correctly match between given species and type of overlapping?

Me2SiCl2 on hydrolysis will produce

how to find the number of octahedral voids in nacl crystal and zns crystal?

Elements having highest density -

62. How to do hydrolysis of elements lacking vacant orbital? Or or how h2co3 is formed on hydrolysis Of C(+4) or CCl4. even if it belonged to 2nd period lacking vacant d orbital?

Calculate the elevation in boiling point for 12 g of AB2 dissolved in 1 kg of water as solvent if AB2 is fully ionised? Given: AB2 dissociates as:AB2→A2++2B−(Kb=0.52 K kg mol−1Molar mass of AB2=120 g/mol)

iron on reaction with hcl forms fecl2 and not fecl3.why?

In a neutral or faintly alkaline solution, 8 moles of permanganate anion quantitatively oxidized thiosulphate anions to produce X moles of a sulphur containing product. The magnitude of X is

Ozonolysis products of an olefin are OHC−CHO and OHC−CH2−CH2−CHO, the olefin is:

if Na is number density of acceptor atoms added and Nd is number of donor atoms added to a semiconductor ,ne and nh are the no. density of electrons and holes in it then1]ne=Nd, nh=Na2]ne+Na=nh+Nd

The mass of BaCO3 produced when excess of CO2 is bubbled through a solution of 0.205 mole Ba(OH)2 solution, is:(Take molar mass of Ba=137 g/mol)Ba(OH)2+CO2→BaCO3+H2O

What is the difference between alkanes alkanes and alkyls

If α,β and γ are the coefficient of linear, areal and volume expansion respectively, then which of the following options correctly represent the relation between them?

what is the role of peroxide in peroxide effect ?

Based on solute-solvent interactions, arrange the following in order of increasing solubility in n-octane and explain. Cyclohexane, KCl, CH3OH, CH3CN.