46295 + Interview Questions in Chemistry

1.	49.One mole of an ideal gas at temperature T1 K expand slowly according to the law of P/V is constant in the final temperature is T2 K the work done by the gas is
Answer» 49.One mole of an ideal gas at temperature T1 K expand slowly according to the law of P/V is constant in the final temperature is T2 K the work done by the gas is

Discussion

2.	In fructose the possible optical isomers are:
Answer» In fructose the possible optical isomers are:

Discussion

3.	How diborane reacts with NH3 at 473K?e
Answer» How diborane reacts with NH3 at 473K?e

Discussion

4.	For a dilute solution containing 2.5 g of a non-volatile non-electrolyte solution in 100 g of water, the elevation in boiling point at 1 atm pressures is 2oC. Assuming concentration of solute is much lower than the concentration of solvent, the vapour pressure in mm Hg of the solution is: (Take kb=0.76 K kg mol−1)
Answer» For a dilute solution containing $2.5 g$ of a non-volatile non-electrolyte solution in $100 g$ of water, the elevation in boiling point at $1 atm$ pressures is $2^{o} C$ . Assuming concentration of solute is much lower than the concentration of solvent, the vapour pressure $i n mm Hg$ of the solution is: (Take $k_{b} = 0.76 {K kg mol}^{- 1}$ )

Discussion

5.	The concentration of NH_4OH in 0.18 M aqueous ammonium acetate solution will be \lbrack Given: K_a(CH_3COOH)=K_b(NH_4OH)=1.8×10^{-5}\rbrack (1) 10^{-3}M (2) 10^{-4}M (3) 4×10^{-3}M (4) 6×10^{-5 }M
Answer» The concentration of NH_4OH in 0.18 M aqueous ammonium acetate solution will be \lbrack Given: K_a(CH_3COOH)=K_b(NH_4OH)=1.8×10^{-5}\rbrack (1) 10^{-3}M (2) 10^{-4}M (3) 4×10^{-3}M (4) 6×10^{-5 }M

Discussion

6.	The products are:
Answer» The products are:

Discussion

7.	What is r group in phenylalanine
Answer» What is r group in phenylalanine

Discussion

8.	a 12.5 mm×20 mm piece of gold foil 0.25mm thick. the densityof gold is19.32 g/cm^3 . how many gold atoms are in the sheet ?
Answer» a 12.5 mm×20 mm piece of gold foil 0.25mm thick. the densityof gold is19.32 g/cm^3 . how many gold atoms are in the sheet ?

Discussion

9.	12. Will solubility increase or decrease on increasing pressure?
Answer» 12. Will solubility increase or decrease on increasing pressure?

Discussion

10.	25g of a sample contains 50% MgCl2 and 50% MgSO4.The % of Mg in the mixture is
Answer» 25g of a sample contains 50% MgCl2 and 50% MgSO4.The % of Mg in the mixture is

Discussion

11.	What are the applications of matrics in real life ?
Answer» What are the applications of matrics in real life ?

Discussion

12.	25 ml of 3.0 M HNO3 are mixed with 75 ml of 4.0 M HNO3. If the volumes are additive, the molarity of the final mixture would be:
Answer» 25 ml of 3.0 M HNO₃ are mixed with 75 ml of 4.0 M HNO₃. If the volumes are additive, the molarity of the final mixture would be:

Discussion

13.	What is whole concept behind drawing the Lewis dot structure of H2SO4.
Answer» What is whole concept behind drawing the Lewis dot structure of H2SO4.

Discussion

14.	Orbital diagram of XeO4
Answer» Orbital diagram of XeO4

Discussion

15.	Which is compound heated from pure Boron Trifluoride
Answer» Which is compound heated from pure Boron Trifluoride

Discussion

16.	Priority of functional group for making corect iupac name of containing multiple functional group in compound
Answer» Priority of functional group for making corect iupac name of containing multiple functional group in compound

Discussion

17.	13To obtain maximum mass of NO2from a given mass of a mixture ofNH3 and 02, the ratio of mass ofNHa to O2 should beNH3+ 02 NO2 H2017404217356None of these4Yo
Answer» 13To obtain maximum mass of NO2from a given mass of a mixture ofNH3 and 02, the ratio of mass ofNHa to O2 should beNH3+ 02 NO2 H2017404217356None of these4Yo

Discussion

18.	How to find the negative order of the Reaction2(O3)→3(O2)
Answer» How to find the negative order of the Reaction 2(O3)→3(O2)

Discussion

19.	When SO2 gas is bubbled in acidified (by H2SO4) aqueous solution of K2Cr2O7, a green coloured solution is formed above 50o C, which on evaporation crystalizes into a violet crystal which is used in the tanning of leather and in gelatin emulsions in photographic film as hardener. Find the oxidation state of sulphur in the complex formed, if oxidation state of chromium in the same complex is +3.
Answer» When $S O_{2}$ gas is bubbled in acidified (by $H_{2} S O_{4}$ ) aqueous solution of $K_{2} C r_{2} O_{7}$ , a green coloured solution is formed above $50^{o}$ C, which on evaporation crystalizes into a violet crystal which is used in the tanning of leather and in gelatin emulsions in photographic film as hardener. Find the oxidation state of sulphur in the complex formed, if oxidation state of chromium in the same complex is $+ 3$ .

Discussion

20.	Convert propane to bromobutane.Convert propanone to 2 methyl propanolConvert chloromethane to but-1-yne
Answer» Convert propane to bromobutane. Convert propanone to 2 methyl propanol Convert chloromethane to but-1-yne

Discussion

21.	Which gas is liberated when Al4C3 is hydrolysed ?
Answer» Which gas is liberated when $A l_{4} C_{3}$ is hydrolysed ?

Discussion

22.	Mark the correct statement
Answer» Mark the correct statement

Discussion

23.	According to IUPAC, what is the systematic name of the compound shown below?
Answer» According to IUPAC, what is the systematic name of the compound shown below?

Discussion

24.	The de-Brogile wavelength of an electron moving with a velocity 1.5×108 ms−1 is equal to that of a photon. The ratio of the kinetic energy of the electron to that of the energy of photon is (apply non-relativistic for electron)
Answer» The de-Brogile wavelength of an electron moving with a velocity $1. 5 \times 10^{8} {ms}^{- 1}$ is equal to that of a photon. The ratio of the kinetic energy of the electron to that of the energy of photon is (apply non-relativistic for electron)

Discussion

25.	Log Kp/Kc + LogRT =0 is true relationship for the following reaction1. PCl5 = PCl3+ Cl22. 2SO2+ O2 = 2SO3 3. N2 + 3H2 = 2NH3 4. (2) and (3) both
Answer» Log Kp/Kc + LogRT =0 is true relationship for the following reaction 1. PCl5 = PCl3+ Cl2 2. 2SO2+ O2 = 2SO3 3. N2 + 3H2 = 2NH3 4. (2) and (3) both

Discussion

26.	How to find number of isomers for any Organic compound?
Answer» How to find number of isomers for any Organic compound?

Discussion

27.	Light of intensity 'x' and wavelength lambda strikes a metal, that emits 'y' electrons per second of maximum energy 'z'. What will happen to 'y' and 'z' if 'x' is halved?
Answer» Light of intensity 'x' and wavelength lambda strikes a metal, that emits 'y' electrons per second of maximum energy 'z'. What will happen to 'y' and 'z' if 'x' is halved?

Discussion

28.	what are Alpha and Beta rays
Answer» what are Alpha and Beta rays

Discussion

29.	The number of structural isomers for C6H14 is:
Answer» The number of structural isomers for $C_{6} H_{14}$ is:

Discussion

30.	Arrange the following: (i) In the decreasing order of the pKb values C2H5NH2,C6H5NHCH3,(C2H5)2NH and C6H5NH2 (ii) In increasing order of basic strength: C6H5NH2,C6H5N(CH3)2,(C6H5)2NHandCH3NH2 (iii) In increasing order of basic strength: (a) Aniline, p-nitroaniline and p-toluidine (b) C6H5NH2,C6H5NHCH3,C6H5CH2NH2 (iv) In decreasing order of basic strength in gas phase : C2H5NH2,(C2H5)2NH,(C2H5)3N and NH3 (v) In increasing order of boiling point: C2H5OH,(CH3)2NH,C2H5NH2. (vi) In increasing order of solubility in water : C6H5NH2,(C2H5)2NH,C2H5NH2.
Answer» Arrange the following: (i) In the decreasing order of the $p K_{b}$ values $C_{2} H_{5} N H_{2}, C_{6} H_{5} N H C H_{3}, (C_{2} H_{5})_{2} N H$ and $C_{6} H_{5} N H_{2}$ (ii) In increasing order of basic strength: $C_{6} H_{5} N H_{2}, C_{6} H_{5} N (C H_{3})_{2}, (C_{6} H_{5})_{2} N H a n d C H_{3} N H_{2}$ (iii) In increasing order of basic strength: (a) Aniline, p-nitroaniline and p-toluidine (b) $C_{6} H_{5} N H_{2}, C_{6} H_{5} N H C H_{3}, C_{6} H_{5} C H_{2} N H_{2}$ (iv) In decreasing order of basic strength in gas phase : $C_{2} H_{5} N H_{2}, (C_{2} H_{5})_{2} N H, (C_{2} H_{5})_{3} N a n d N H_{3}$ (v) In increasing order of boiling point: $C_{2} H_{5} O H, (C H_{3})_{2} N H, C_{2} H_{5} N H_{2} .$ (vi) In increasing order of solubility in water : $C_{6} H_{5} N H_{2}, (C_{2} H_{5})_{2} N H, C_{2} H_{5} N H_{2} .$

30.

Arrange the following: (i) In the decreasing order of the pKb values C2H5NH2,C6H5NHCH3,(C2H5)2NH and C6H5NH2 (ii) In increasing order of basic strength: C6H5NH2,C6H5N(CH3)2,(C6H5)2NHandCH3NH2 (iii) In increasing order of basic strength: (a) Aniline, p-nitroaniline and p-toluidine (b) C6H5NH2,C6H5NHCH3,C6H5CH2NH2 (iv) In decreasing order of basic strength in gas phase : C2H5NH2,(C2H5)2NH,(C2H5)3N and NH3 (v) In increasing order of boiling point: C2H5OH,(CH3)2NH,C2H5NH2. (vi) In increasing order of solubility in water : C6H5NH2,(C2H5)2NH,C2H5NH2.

Answer»

Arrange the following:

(i) In the decreasing order of the $p K_{b}$ values
$C_{2} H_{5} N H_{2}, C_{6} H_{5} N H C H_{3}, (C_{2} H_{5})_{2} N H$ and $C_{6} H_{5} N H_{2}$

(ii) In increasing order of basic strength:
$C_{6} H_{5} N H_{2}, C_{6} H_{5} N (C H_{3})_{2}, (C_{6} H_{5})_{2} N H a n d C H_{3} N H_{2}$

(iii) In increasing order of basic strength:
(a) Aniline, p-nitroaniline and p-toluidine
(b) $C_{6} H_{5} N H_{2}, C_{6} H_{5} N H C H_{3}, C_{6} H_{5} C H_{2} N H_{2}$

(iv) In decreasing order of basic strength in gas phase :

$C_{2} H_{5} N H_{2}, (C_{2} H_{5})_{2} N H, (C_{2} H_{5})_{3} N a n d N H_{3}$

(v) In increasing order of boiling point:

$C_{2} H_{5} O H, (C H_{3})_{2} N H, C_{2} H_{5} N H_{2} .$

(vi) In increasing order of solubility in water :

$C_{6} H_{5} N H_{2}, (C_{2} H_{5})_{2} N H, C_{2} H_{5} N H_{2} .$

Discussion

31.	What is the PH of 1M HCL solution? FIND its pH?
Answer» What is the PH of 1M HCL solution? FIND its pH?

Discussion

32.	Hess law is applicable for the determination of heat of
Answer» Hess law is applicable for the determination of heat of

Discussion

33.	26. Give its IUPAC nameCl BrCOOHOH
Answer» 26. Give its IUPAC nameCl BrCOOHOH

Discussion

34.	The correct statement with regard to H+2 & H−2 is
Answer» The correct statement with regard to $H_{2}^{+}$ & $H_{2}^{-}$ is

Discussion

35.	When an optically active compound undergoes SN1 mechanism there is racemisation and 2 products are formed.Are the products enantiomers? How to decide which is major product?
Answer» When an optically active compound undergoes SN1 mechanism there is racemisation and 2 products are formed. Are the products enantiomers? How to decide which is major product?

Discussion

36.	Write the names and formulae of (a) a metal hydride, and (b) a non-metal hydride.
Answer» Write the names and formulae of (a) a metal hydride, and (b) a non-metal hydride.

Discussion

37.	36. What will be the product of the Reaction of benzene with vanadium pentaoxide? 1) maleic anhydride 2) succinic anhydride
Answer» 36. What will be the product of the Reaction of benzene with vanadium pentaoxide? 1) maleic anhydride 2) succinic anhydride

Discussion

38.	What did the peddler say in his defence when it was clear that he was not the person the ironmaster had thought he was?
Answer» What did the peddler say in his defence when it was clear that he was not the person the ironmaster had thought he was?

Discussion

39.	What is the critical radius ratio for the CsCl structure?
Answer» What is the critical radius ratio for the $C s C l$ structure?

Discussion

40.	Among the following complexes [Ru(bipyridyl)3)]2+, [Cr(EDTA)]2+, trans-[CrCl2(ox)2]3− and cis-[CrCl2(ox)2]3−, the total number of complexes that shows chirality are:
Answer» Among the following complexes $[{Ru(bipyridyl)}_{3})]^{2 +}, [C r (E D T A)]^{2 +}, trans- [C r C l_{2} (o x)_{2}]^{3 -}$ and $cis- [C r C l_{2} (o x)_{2}]^{3 -}$ , the total number of complexes that shows chirality are:

Discussion

41.	1 mole of a gaseous aliphatic compound CnH3m is completely burnt in an excess of oxygen. The moles of H2O formed are:
Answer» 1 mole of a gaseous aliphatic compound $C_{n} H_{3 m}$ is completely burnt in an excess of oxygen. The moles of $H_{2} O$ formed are:

Discussion

42.	45. Which one of the following reactions does not yield an alkyl halide ? (a ) Diethyl ether+ Cl2 ( in the dark) (b) Diethyl ether + HI (c ) Diethyl ether +PCl5 Reduction SOCl2 (d) Diethyl ether------------------------------- X---------------------------------
Answer» 45. Which one of the following reactions does not yield an alkyl halide ? (a ) Diethyl ether+ Cl2 ( in the dark) (b) Diethyl ether + HI (c ) Diethyl ether +PCl5 Reduction SOCl2 (d) Diethyl ether------------------------------- X---------------------------------

Discussion

43.	Which of the following will undergo a faster SN2?
Answer» Which of the following will undergo a faster $S_{N} 2$ ?

Discussion

44.	Hybridisation of central atom of cation of solid PCl5, solid PBr5 solid N2O5 are respectively
Answer» Hybridisation of central atom of cation of solid $P C l_{5}$ , solid $P B r_{5}$ solid $N_{2} O_{5}$ are respectively

Discussion

45.	While antacids and antiallergic drugs interfere with the function of histamines, why do these not interfere with the function of each other?
Answer» While antacids and antiallergic drugs interfere with the function of histamines, why do these not interfere with the function of each other?

Discussion

46.	59. Delta G (kJ/mol) values at 298 Kaul for Ag+(aq), Cl- and AgCl are 77, -129, -109 respectively for the given reaction Ag+ + Cl- = AgCl then the solubility product of AgCl is
Answer» 59. Delta G (kJ/mol) values at 298 Kaul for Ag+(aq), Cl- and AgCl are 77, -129, -109 respectively for the given reaction Ag+ + Cl- = AgCl then the solubility product of AgCl is

Discussion

47.	Isoprene is used for making:
Answer» Isoprene is used for making:

Discussion

48.	A physicist hanged a cylinder-shaped container of base area 100 cm2 to a spring. He slowly poured water into the container and found that the surface of water remained at the same level with respect to ground. Find the spring constant k of the spring. Take density of water as 1000 kg/m3 .
Answer» A physicist hanged a cylinder-shaped container of base area 100 cm2 to a spring. He slowly poured water into the container and found that the surface of water remained at the same level with respect to ground. Find the spring constant k of the spring. Take density of water as 1000 kg/m3 .

Discussion

49.	3. Lysine is least soluble in water in the pH range - A)3 to 4 B)5 to 6 C)6 to 7 D)8 to 9
Answer» 3. Lysine is least soluble in water in the pH range - A)3 to 4 B)5 to 6 C)6 to 7 D)8 to 9

Discussion

50.	8 why [Cu(NH3)4]2+ is not tetrahedral?it has d9 electron Cu2+ in outer most shell then there is no chance for inner orbital complex because all shell is filled so it suppose to be tetrahedral
Answer» 8 why [Cu(NH3)4]2+ is not tetrahedral?it has d9 electron Cu2+ in outer most shell then there is no chance for inner orbital complex because all shell is filled so it suppose to be tetrahedral

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

49.One mole of an ideal gas at temperature T1 K expand slowly according to the law of P/V is constant in the final temperature is T2 K the work done by the gas is

In fructose the possible optical isomers are:

How diborane reacts with NH3 at 473K?e

The concentration of NH_4OH in 0.18 M aqueous ammonium acetate solution will be \lbrack Given: K_a(CH_3COOH)=K_b(NH_4OH)=1.8×10^{-5}\rbrack (1) 10^{-3}M (2) 10^{-4}M (3) 4×10^{-3}M (4) 6×10^{-5 }M

The products are:

What is r group in phenylalanine

a 12.5 mm×20 mm piece of gold foil 0.25mm thick. the densityof gold is19.32 g/cm^3 . how many gold atoms are in the sheet ?

12. Will solubility increase or decrease on increasing pressure?

25g of a sample contains 50% MgCl2 and 50% MgSO4.The % of Mg in the mixture is

What are the applications of matrics in real life ?

25 ml of 3.0 M HNO3 are mixed with 75 ml of 4.0 M HNO3. If the volumes are additive, the molarity of the final mixture would be:

What is whole concept behind drawing the Lewis dot structure of H2SO4.

Orbital diagram of XeO4

Which is compound heated from pure Boron Trifluoride

Priority of functional group for making corect iupac name of containing multiple functional group in compound

13To obtain maximum mass of NO2from a given mass of a mixture ofNH3 and 02, the ratio of mass ofNHa to O2 should beNH3+ 02 NO2 H2017404217356None of these4Yo

How to find the negative order of the Reaction2(O3)→3(O2)

Convert propane to bromobutane.Convert propanone to 2 methyl propanolConvert chloromethane to but-1-yne

Which gas is liberated when Al4C3 is hydrolysed ?

Mark the correct statement

According to IUPAC, what is the systematic name of the compound shown below?

The de-Brogile wavelength of an electron moving with a velocity 1.5×108 ms−1 is equal to that of a photon. The ratio of the kinetic energy of the electron to that of the energy of photon is (apply non-relativistic for electron)

Log Kp/Kc + LogRT =0 is true relationship for the following reaction1. PCl5 = PCl3+ Cl22. 2SO2+ O2 = 2SO3 3. N2 + 3H2 = 2NH3 4. (2) and (3) both

How to find number of isomers for any Organic compound?

Light of intensity 'x' and wavelength lambda strikes a metal, that emits 'y' electrons per second of maximum energy 'z'. What will happen to 'y' and 'z' if 'x' is halved?

what are Alpha and Beta rays

The number of structural isomers for C6H14 is:

What is the PH of 1M HCL solution? FIND its pH?

Hess law is applicable for the determination of heat of

26. Give its IUPAC nameCl BrCOOHOH

The correct statement with regard to H+2 &amp; H−2 is

When an optically active compound undergoes SN1 mechanism there is racemisation and 2 products are formed.Are the products enantiomers? How to decide which is major product?

Write the names and formulae of (a) a metal hydride, and (b) a non-metal hydride.

36. What will be the product of the Reaction of benzene with vanadium pentaoxide? 1) maleic anhydride 2) succinic anhydride

What did the peddler say in his defence when it was clear that he was not the person the ironmaster had thought he was?

What is the critical radius ratio for the CsCl structure?

Among the following complexes [Ru(bipyridyl)3)]2+, [Cr(EDTA)]2+, trans-[CrCl2(ox)2]3− and cis-[CrCl2(ox)2]3−, the total number of complexes that shows chirality are:

1 mole of a gaseous aliphatic compound CnH3m is completely burnt in an excess of oxygen. The moles of H2O formed are:

45. Which one of the following reactions does not yield an alkyl halide ? (a ) Diethyl ether+ Cl2 ( in the dark) (b) Diethyl ether + HI (c ) Diethyl ether +PCl5 Reduction SOCl2 (d) Diethyl ether------------------------------- X---------------------------------

Which of the following will undergo a faster SN2?

Hybridisation of central atom of cation of solid PCl5, solid PBr5 solid N2O5 are respectively

While antacids and antiallergic drugs interfere with the function of histamines, why do these not interfere with the function of each other?

59. Delta G (kJ/mol) values at 298 Kaul for Ag+(aq), Cl- and AgCl are 77, -129, -109 respectively for the given reaction Ag+ + Cl- = AgCl then the solubility product of AgCl is

Isoprene is used for making:

A physicist hanged a cylinder-shaped container of base area 100 cm2 to a spring. He slowly poured water into the container and found that the surface of water remained at the same level with respect to ground. Find the spring constant k of the spring. Take density of water as 1000 kg/m3 .

3. Lysine is least soluble in water in the pH range - A)3 to 4 B)5 to 6 C)6 to 7 D)8 to 9

8 why [Cu(NH3)4]2+ is not tetrahedral?it has d9 electron Cu2+ in outer most shell then there is no chance for inner orbital complex because all shell is filled so it suppose to be tetrahedral

The correct statement with regard to H+2 & H−2 is