46295 + Interview Questions in Chemistry

1.	Suffix used for single bond, double bond and triple bond on carbon atoms respectively are:
Answer» Suffix used for single bond, double bond and triple bond on carbon atoms respectively are:

Discussion

2.	Calculate the vapour pressure of a solution at 100∘C containing 3 g of cane sugar in 33 g of water. (At.wt.C=12 g/mol, H=1 g/mol ,O=16 g/mol)
Answer» Calculate the vapour pressure of a solution at $100^{\circ} C$ containing $3 g$ of cane sugar in $33 g$ of water. $(A t . w t . C = 12 g / m o l, H = 1 g / m o l, O = 16 g / m o l)$

Discussion

3.	Alkali earth metal flouride group order?
Answer» Alkali earth metal flouride group order?

Discussion

4.	1-phenyl-2-chloropropane when treated with alchoholic KOH gives which product(major product)?
Answer» 1-phenyl-2-chloropropane when treated with alchoholic KOH gives which product(major product)?

Discussion

5.	RE-AIPMT 2015Assuming complete ionization, same moles ofwhich of the following compounds will require theleast amount of acidified KMnO, for completeoxidation?(1) FeC204(3) FesOA(2) Fe(NO22(4) FeSO3
Answer» RE-AIPMT 2015Assuming complete ionization, same moles ofwhich of the following compounds will require theleast amount of acidified KMnO, for completeoxidation?(1) FeC204(3) FesOA(2) Fe(NO22(4) FeSO3

Discussion

6.	Which of these isoelectronic species has the smallest radius?
Answer» Which of these isoelectronic species has the smallest radius?

Discussion

7.	"PCl5(g) PCl3(g) + Cl2(g) Vapour density is found to be 100 when 1 mole of PCl5 is taken in a 10 litre flask at 27* C."How did the initial density equals to M/2?Since volume is 10 L shouldn't ot be M/10?
Answer» "PCl5(g) PCl3(g) + Cl2(g) Vapour density is found to be 100 when 1 mole of PCl5 is taken in a 10 litre flask at 27* C." How did the initial density equals to M/2? Since volume is 10 L shouldn't ot be M/10?

Discussion

8.	The elements of 3d transition series are given as: ScTiVCrMnFeCoNiCuZn Answer the following: (i) Write the element which is not regarded as a transition element. Give reason. (ii) Which element has the highest m.p.? (iii) Write the element which can show an oxidation state of +1. (iv) Which element is a strong oxidizing agent in +3 oxidation state and why?
Answer» The elements of 3d transition series are given as: $\begin{matrix} S c & T i & V & C r & M n & F e & C o & N i & C u & Z n \end{matrix}$ Answer the following: (i) Write the element which is not regarded as a transition element. Give reason. (ii) Which element has the highest m.p.? (iii) Write the element which can show an oxidation state of +1. (iv) Which element is a strong oxidizing agent in +3 oxidation state and why?

Discussion

9.	Why is the electron affinity of neon zeo while the electron gain enthalpy is 116 kj/mol? What is the relation between electron gain enthalpy and electron affinity?
Answer» Why is the electron affinity of neon zeo while the electron gain enthalpy is 116 kj/mol? What is the relation between electron gain enthalpy and electron affinity?

Discussion

10.	What is the shortcoming of synthetic fibers?
Answer» What is the shortcoming of synthetic fibers?

Discussion

11.	8.Compare rate of reaction with Ag+NO3- or rate of SN1 reaction
Answer» 8.Compare rate of reaction with Ag+NO3- or rate of SN1 reaction

Discussion

12.	14.when cyclopropylcarbinyl chloride react with water give mechanism
Answer» 14.when cyclopropylcarbinyl chloride react with water give mechanism

Discussion

13.	Why is an S-S single bond stronger than O-O single bond despite the O=O Double bond being stronger than S=S
Answer» Why is an S-S single bond stronger than O-O single bond despite the O=O Double bond being stronger than S=S

Discussion

14.	How can Gay Lussac's law be applied to volumes of products and reactants in a chemical reaction?
Answer» How can Gay Lussac's law be applied to volumes of products and reactants in a chemical reaction?

Discussion

15.	38. a 0.004 m solution of Na2SO4 is istonic with a 0.01m solution of glucose at the same temp the apart degrree of dissociation of Na2SO4 s?
Answer» 38. a 0.004 m solution of Na2SO4 is istonic with a 0.01m solution of glucose at the same temp the apart degrree of dissociation of Na2SO4 s?

Discussion

16.	HEXAGONAL CLOSE PACKING(HCP) HAS TETRAHEDRAL AS WELL AS OCTAHEDRAL VOIDS. THE TOTAL NO OF OCTAHEDRAL AND TETRAHEDRAL VOIDS PER UNIT CELL ARE 6 AND 12 RESPECTIVELY. THE NO OF TETRAHEDRAL VOIDS COMPLETELY INSIDE THE UNIT CELL(DO NOT HAVE CONTRIBUTION IN ANOTHER UNIT CELL) IS X.THE VALUE OF 2X IS
Answer» HEXAGONAL CLOSE PACKING(HCP) HAS TETRAHEDRAL AS WELL AS OCTAHEDRAL VOIDS. THE TOTAL NO OF OCTAHEDRAL AND TETRAHEDRAL VOIDS PER UNIT CELL ARE 6 AND 12 RESPECTIVELY. THE NO OF TETRAHEDRAL VOIDS COMPLETELY INSIDE THE UNIT CELL(DO NOT HAVE CONTRIBUTION IN ANOTHER UNIT CELL) IS X.THE VALUE OF 2X IS

Discussion

17.	The number of isomers which are ethers and having the molecular formula C4H10O, is
Answer» The number of isomers which are ethers and having the molecular formula $C_{4} H_{10} O$ , is

Discussion

18.	Most stable Carbocation
Answer» Most stable Carbocation

Discussion

19.	Drawthe structure of (i) BeCl2(vapour) (ii) BeCl2(solid).
Answer» Draw the structure of (i) BeCl₂ (vapour) (ii) BeCl₂ (solid).

Discussion

20.	product obtained when ch3ch2mgbr with c6h5oh
Answer» product obtained when ch3ch2mgbr with c6h5oh

Discussion

21.	What are the types of electrolytes?
Answer» What are the types of electrolytes?

Discussion

22.	39.What is solvolysis
Answer» 39.What is solvolysis

Discussion

23.	What is inner pair effect and lanthanide contraction ? Explain briefly about their cause including giving a idea of shielding and penetrating effect ?
Answer» What is inner pair effect and lanthanide contraction ? Explain briefly about their cause including giving a idea of shielding and penetrating effect ?

Discussion

24.	Epsom salt’s chemical formula is
Answer» Epsom salt’s chemical formula is

Discussion

25.	18.When a Fecl3 solution is added to NaOH, a negatively charged SOL is obtained it is due to 1)the preferential adsorption of OH ions 2) presence of basic group 3)Self dissociation 4) electron capture by sol particles
Answer» 18.When a Fecl3 solution is added to NaOH, a negatively charged SOL is obtained it is due to 1)the preferential adsorption of OH ions 2) presence of basic group 3)Self dissociation 4) electron capture by sol particles

Discussion

26.	A solution containing 1 mol per litre of each Cu(NO3)2,AgNO3, and Hg2(NO3)2 is being electrolyzed by using inert electrodes. The values of standard electrode potentials in volts (reduction potential) are Ag\|Ag⨁=+0.80,2Hg\|Hg2+2=+0.79 Cu\|Cu2+=+0.34,Mg\|Mg2+=−2.37 with increasing voltage, the sequence of deposition of metals at the cathode will be (IIT-JEE, 1984)
Answer» A solution containing 1 mol per litre of each $C u (N O_{3})_{2}, A g N O_{3},$ and $H g_{2} (N O_{3})_{2}$ is being electrolyzed by using inert electrodes. The values of standard electrode potentials in volts (reduction potential) are $A g \| A g^{⨁} = + 0.80, 2 H g \| H g_{2}^{2 +} = + 0.79$ $C u \| C u^{2 +} = + 0.34, M g \| M g^{2 +} = - 2.37$ with increasing voltage, the sequence of deposition of metals at the cathode will be (IIT-JEE, 1984)

Discussion

27.	Which one of the following reaction is not associated with the Solvay's process for manufacturing of sodium carbonate?
Answer» Which one of the following reaction is not associated with the Solvay's process for manufacturing of sodium carbonate?

Discussion

28.	total no. of pi and sigma bonds in so
Answer» total no. of pi and sigma bonds in so

Discussion

29.	Electrons are _____ particles.
Answer» Electrons are _____ particles.

Discussion

30.	16. What is electronegativity? In which way we can electonegativity of any element ?
Answer» 16. What is electronegativity? In which way we can electonegativity of any element ?

Discussion

31.	Find and correct the errors in the statement:
Answer» Find and correct the errors in the statement:

Discussion

32.	Calculate the vapour pressure of an aqueous solution of 1.0 molal glucose solution at 100oC.
Answer» Calculate the vapour pressure of an aqueous solution of $1.0$ molal glucose solution at $100^{o} C .$

Discussion

33.	Which of the following is incorrect?
Answer» Which of the following is incorrect?

Discussion

34.	The angular momentum of an electron in hydrogen atom for n=4, is
Answer» The angular momentum of an electron in hydrogen atom for $n = 4$ , is

Discussion

35.	39. Which of the following statement is incorrect about the reaction of ammonia derivatives with carbonyl compounds 1) pH of solution is maintained between 3 to 4 2) addition of ammonia derivatives occurs followed by elimination of water 3) at very low pH less than 3 Ammonia derivatives are protonated and do not act as nucleophile 4) at very high pH reaction becomes explosive
Answer» 39. Which of the following statement is incorrect about the reaction of ammonia derivatives with carbonyl compounds 1) pH of solution is maintained between 3 to 4 2) addition of ammonia derivatives occurs followed by elimination of water 3) at very low pH less than 3 Ammonia derivatives are protonated and do not act as nucleophile 4) at very high pH reaction becomes explosive

Discussion

36.	Define Quantum Physics
Answer» Define Quantum Physics

Discussion

37.	The CN and ON of X in the compound [X(SO4)(NH3)5] will be- (1) 10 and 3 (2) 1 and 6 (3) 6 and 4 (4) 6 and 2
Answer» The CN and ON of X in the compound [X(SO4)(NH3)5] will be- (1) 10 and 3 (2) 1 and 6 (3) 6 and 4 (4) 6 and 2

Discussion

38.	9. 4.35g of a sample of pyrolusite[MnO2] heated with concentrated HCl gave chlorine . the chlorine is then passed through KI solution liberated 6.35g of iodine .the percentage purity of pyrolusite sample is
Answer» 9. 4.35g of a sample of pyrolusite[MnO2] heated with concentrated HCl gave chlorine . the chlorine is then passed through KI solution liberated 6.35g of iodine .the percentage purity of pyrolusite sample is

Discussion

39.	The efficiency of a fuel cell is given by:[1 Mark]
Answer» The efficiency of a fuel cell is given by: [1 Mark]

Discussion

40.	Identify (W)
Answer» Identify (W)

Discussion

41.	How to find out that which molecule is polar and which is non polar?
Answer» How to find out that which molecule is polar and which is non polar?

Discussion

42.	An element has a primitive cubic structure with unit cell edge length of 272 pm. The atomic radius is:
Answer» An element has a primitive cubic structure with unit cell edge length of $272 pm$ . The atomic radius is:

Discussion

43.	The correct increasing order of wavelengths of absorption in the visible region for the complexes of Co3+ is:
Answer» The correct increasing order of wavelengths of absorption in the visible region for the complexes of $C o^{3 +}$ is:

Discussion

44.	Using Raoult's law explain how the total vapour pressure over the solution is related to mole fraction of components in the following solutions. (a) CHCl3 (l) and CH2Cl2 (l) Using Raoult's law explain how the total vapour pressure over the solution is related to mole fraction of components in the following solutions. (b) NaCl(s) and H2O (l)
Answer» Using Raoult's law explain how the total vapour pressure over the solution is related to mole fraction of components in the following solutions. (a) $C H C l_{3} (l) a n d C H_{2} C l_{2} (l)$ Using Raoult's law explain how the total vapour pressure over the solution is related to mole fraction of components in the following solutions. (b) $N a C l (s) a n d H_{2} O (l)$

44.

Using Raoult's law explain how the total vapour pressure over the solution is related to mole fraction of components in the following solutions. (a) CHCl3 (l) and CH2Cl2 (l) Using Raoult's law explain how the total vapour pressure over the solution is related to mole fraction of components in the following solutions. (b) NaCl(s) and H2O (l)

Answer»

Using Raoult's law explain how the total vapour pressure over the solution is related to mole fraction of components in the following solutions.
(a) $C H C l_{3} (l) a n d C H_{2} C l_{2} (l)$

Using Raoult's law explain how the total vapour pressure over the solution is related to mole fraction of components in the following solutions.
(b) $N a C l (s) a n d H_{2} O (l)$

Discussion

45.	(ΔH − ΔU) for the formation of carbon monoxide (CO) from its elements at 298 K is ( R = 8.314 J K−1 mol−1)
Answer» $(Δ H - Δ U)$ for the formation of carbon monoxide ( $C O$ ) from its elements at $298 K$ is ( $R = 8.314 J K^{- 1} m o l^{- 1}$ )

Discussion

46.	31. The reaction A(g)+2B(g)------>C(g)+D(g) is an elementary process. In an experiment the initial pressure of A and B are 0.6 and 0.8 atm respectively. When partial pressure of C is 0.2 atm,find the rate of reaction relative to the initial rate.
Answer» 31. The reaction A(g)+2B(g)------>C(g)+D(g) is an elementary process. In an experiment the initial pressure of A and B are 0.6 and 0.8 atm respectively. When partial pressure of C is 0.2 atm,find the rate of reaction relative to the initial rate.

Discussion

47.	The nuclease enzyme which brings its attack from free end of a polynucleotide is?
Answer» The nuclease enzyme which brings its attack from free end of a polynucleotide is?

Discussion

48.	Ratio of number of o (sigma) and Tt(pi-) bondspresent in the molecule C2(CN)4 is(1) 1 1(2)21(3) 1 2(4) 3 2
Answer» Ratio of number of o (sigma) and Tt(pi-) bondspresent in the molecule C2(CN)4 is(1) 1 1(2)21(3) 1 2(4) 3 2

Discussion

49.	Question 09 Which molecule/ion out of the following does not contain upaired electons? (a) N+2 (b) O2 (c) O2−2 (d) B2
Answer» Question 09 Which molecule/ion out of the following does not contain upaired electons? (a) $N_{2}^{+}$ (b) $O_{2}$ (c) $O_{2}^{2 -}$ (d) $B_{2}$

49.

Question 09 Which molecule/ion out of the following does not contain upaired electons? (a) N+2 (b) O2 (c) O2−2 (d) B2

Answer»

Question 09

Which molecule/ion out of the following does not contain upaired electons?

(a) $N_{2}^{+}$

(b) $O_{2}$

(c) $O_{2}^{2 -}$

(d) $B_{2}$

Discussion

50.	What is the meaning of bomb caloriemeter?
Answer» What is the meaning of bomb caloriemeter?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Suffix used for single bond, double bond and triple bond on carbon atoms respectively are:

Calculate the vapour pressure of a solution at 100∘C containing 3 g of cane sugar in 33 g of water. (At.wt.C=12 g/mol, H=1 g/mol ,O=16 g/mol)

Alkali earth metal flouride group order?

1-phenyl-2-chloropropane when treated with alchoholic KOH gives which product(major product)?

RE-AIPMT 2015Assuming complete ionization, same moles ofwhich of the following compounds will require theleast amount of acidified KMnO, for completeoxidation?(1) FeC204(3) FesOA(2) Fe(NO22(4) FeSO3

Which of these isoelectronic species has the smallest radius?

"PCl5(g) PCl3(g) + Cl2(g) Vapour density is found to be 100 when 1 mole of PCl5 is taken in a 10 litre flask at 27* C."How did the initial density equals to M/2?Since volume is 10 L shouldn't ot be M/10?

Why is the electron affinity of neon zeo while the electron gain enthalpy is 116 kj/mol? What is the relation between electron gain enthalpy and electron affinity?

What is the shortcoming of synthetic fibers?

8.Compare rate of reaction with Ag+NO3- or rate of SN1 reaction

14.when cyclopropylcarbinyl chloride react with water give mechanism

Why is an S-S single bond stronger than O-O single bond despite the O=O Double bond being stronger than S=S

How can Gay Lussac's law be applied to volumes of products and reactants in a chemical reaction?

38. a 0.004 m solution of Na2SO4 is istonic with a 0.01m solution of glucose at the same temp the apart degrree of dissociation of Na2SO4 s?

HEXAGONAL CLOSE PACKING(HCP) HAS TETRAHEDRAL AS WELL AS OCTAHEDRAL VOIDS. THE TOTAL NO OF OCTAHEDRAL AND TETRAHEDRAL VOIDS PER UNIT CELL ARE 6 AND 12 RESPECTIVELY. THE NO OF TETRAHEDRAL VOIDS COMPLETELY INSIDE THE UNIT CELL(DO NOT HAVE CONTRIBUTION IN ANOTHER UNIT CELL) IS X.THE VALUE OF 2X IS

The number of isomers which are ethers and having the molecular formula C4H10O, is

Most stable Carbocation

Drawthe structure of (i) BeCl2(vapour) (ii) BeCl2(solid).

product obtained when ch3ch2mgbr with c6h5oh

What are the types of electrolytes?

39.What is solvolysis

What is inner pair effect and lanthanide contraction ? Explain briefly about their cause including giving a idea of shielding and penetrating effect ?

Epsom salt’s chemical formula is

18.When a Fecl3 solution is added to NaOH, a negatively charged SOL is obtained it is due to 1)the preferential adsorption of OH ions 2) presence of basic group 3)Self dissociation 4) electron capture by sol particles

Which one of the following reaction is not associated with the Solvay's process for manufacturing of sodium carbonate?

total no. of pi and sigma bonds in so

Electrons are _____ particles.

16. What is electronegativity? In which way we can electonegativity of any element ?

Find and correct the errors in the statement:

Calculate the vapour pressure of an aqueous solution of 1.0 molal glucose solution at 100oC.

Which of the following is incorrect?

The angular momentum of an electron in hydrogen atom for n=4, is

Define Quantum Physics

The CN and ON of X in the compound [X(SO4)(NH3)5] will be- (1) 10 and 3 (2) 1 and 6 (3) 6 and 4 (4) 6 and 2

9. 4.35g of a sample of pyrolusite[MnO2] heated with concentrated HCl gave chlorine . the chlorine is then passed through KI solution liberated 6.35g of iodine .the percentage purity of pyrolusite sample is

The efficiency of a fuel cell is given by:[1 Mark]

Identify (W)

How to find out that which molecule is polar and which is non polar?

An element has a primitive cubic structure with unit cell edge length of 272 pm. The atomic radius is:

The correct increasing order of wavelengths of absorption in the visible region for the complexes of Co3+ is:

(ΔH − ΔU) for the formation of carbon monoxide (CO) from its elements at 298 K is ( R = 8.314 J K−1 mol−1)

31. The reaction A(g)+2B(g)------>C(g)+D(g) is an elementary process. In an experiment the initial pressure of A and B are 0.6 and 0.8 atm respectively. When partial pressure of C is 0.2 atm,find the rate of reaction relative to the initial rate.

The nuclease enzyme which brings its attack from free end of a polynucleotide is?

Ratio of number of o (sigma) and Tt(pi-) bondspresent in the molecule C2(CN)4 is(1) 1 1(2)21(3) 1 2(4) 3 2

Question 09 Which molecule/ion out of the following does not contain upaired electons? (a) N+2 (b) O2 (c) O2−2 (d) B2

What is the meaning of bomb caloriemeter?