46295 + Interview Questions in Chemistry

1.	Which of the following statements is/are true for Mohr’s salt?
Answer» Which of the following statements is/are true for Mohr’s salt?

Discussion

2.	Which one of the following is most stable ?
Answer» Which one of the following is most stable ?

Discussion

3.	Difference btw 52 g of he and 52 u of he.( Please explain in brief)
Answer» Difference btw 52 g of he and 52 u of he.( Please explain in brief)

Discussion

4.	Find the major product?
Answer» Find the major product?

Discussion

5.	The key step in cannizzaro’s reaction is the intermolecular shift of:
Answer» The key step in cannizzaro’s reaction is the intermolecular shift of:

Discussion

6.	Question 1Which of the following correctly represents 360 g of water?(i) 2 moles of H2O(ii) 20 moles of water(iii) 6.022×1023 molecules of water(iv) 1.2044×1025 molecules of water(a) (i)(b) (i) and (iv)(c) (ii) and (iii)(d) (ii) and (iv)
Answer» Question 1 Which of the following correctly represents 360 g of water? (i) 2 moles of $H_{2} O$ (ii) 20 moles of water (iii) $6.022 \times 10^{23}$ molecules of water (iv) $1.2044 \times 10^{25}$ molecules of water (a) (i) (b) (i) and (iv) (c) (ii) and (iii) (d) (ii) and (iv)

6.

Question 1Which of the following correctly represents 360 g of water?(i) 2 moles of H2O(ii) 20 moles of water(iii) 6.022×1023 molecules of water(iv) 1.2044×1025 molecules of water(a) (i)(b) (i) and (iv)(c) (ii) and (iii)(d) (ii) and (iv)

Answer»

Question 1

Which of the following correctly represents 360 g of water?

(i) 2 moles of $H_{2} O$

(ii) 20 moles of water

(iii) $6.022 \times 10^{23}$ molecules of water

(iv)

1.2044 \times 10^{25}

molecules of water

(a) (i)

(b) (i) and (iv)

(c) (ii) and (iii)

(d) (ii) and (iv)

Discussion

7.	Freezing point of C6H6(l) is 5.50C. If 10 g of C4H10 is mixed with 200 g of C6H6(l). Calculate freezing point of solutionkf=5.12oC/m.
Answer» Freezing point of $C_{6} H_{6} (l)$ is ${5.5}^{0} C$ . If $10 g$ of $C_{4} H_{10}$ is mixed with $200 g$ of $C_{6} H_{6} (l)$ . Calculate freezing point of solution $k_{f} = {5.12}^{o} C / m .$

Discussion

8.	Ethyl bromide can be converted into ethyl alcohol by [KCET 1989]
Answer» Ethyl bromide can be converted into ethyl alcohol by [KCET 1989]

8.

Ethyl bromide can be converted into ethyl alcohol by [KCET 1989]

Answer»

Ethyl bromide can be converted into ethyl alcohol by

[KCET 1989]

Discussion

9.	7 The solubility of srf2 at 25degree Celsius is 0.0122g/l what will be ksp of srf2 at this temp (mol wt srf2 125.6g)
Answer» 7 The solubility of srf2 at 25degree Celsius is 0.0122g/l what will be ksp of srf2 at this temp (mol wt srf2 125.6g)

Discussion

10.	Ethylamine can be prepared by the action of bromine and caustic potash on [CPMT 1994]
Answer» Ethylamine can be prepared by the action of bromine and caustic potash on [CPMT 1994]

10.

Ethylamine can be prepared by the action of bromine and caustic potash on [CPMT 1994]

Answer»

Ethylamine can be prepared by the action of bromine and caustic potash on

[CPMT 1994]

Discussion

11.	Two flasks A and B have equal volumes. Flask A containing H2 gas is maintained at 27 oC while B containing an equal mass of CH2S gas is maintained at 177 oC. Using average velocity calculate by how many times the molecules of H2 gas are moving faster than CH2S gas.
Answer» Two flasks A and B have equal volumes. Flask A containing $H_{2}$ gas is maintained at $27^{o} C$ while B containing an equal mass of $C H_{2} S$ gas is maintained at $177^{o} C$ . Using average velocity calculate by how many times the molecules of $H_{2}$ gas are moving faster than $C H_{2} S$ gas.

Discussion

12.	24. Which of this following has least bond angle option are (1) CH4 (2) BH3 (3) H2O (4) NH3
Answer» 24. Which of this following has least bond angle option are (1) CH4 (2) BH3 (3) H2O (4) NH3

Discussion

13.	which hs greater +I .-I and +R =OH or OCH3 in bemzene
Answer» which hs greater +I .-I and +R =OH or OCH3 in bemzene

Discussion

14.	In the reaction Y is CH3CH2CH2OHPCl3−−−→Xalc.KOH−−−−−→Y,
Answer» In the reaction Y is $C H_{3} C H_{2} C H_{2} O H P C l_{3} - -- \to X a l c . K O H - ---- \to Y,$

Discussion

15.	Ten grams of ice at 0C is added to a beaker containing 30 grams of water at25^° C. what is the final temperature or the system when it comes to thermalequilibrium (The specitic heat of waters eal gm/C and latent heat of meltingof ice is 80 calgm):(2 75 C(4) -1.25^° C(3)12.5
Answer» Ten grams of ice at 0C is added to a beaker containing 30 grams of water at25^° C. what is the final temperature or the system when it comes to thermalequilibrium (The specitic heat of waters eal gm/C and latent heat of meltingof ice is 80 calgm):(2 75 C(4) -1.25^° C(3)12.5

Discussion

16.	53. For a reaction 2A+ 3B gives C + 4D the following expression log (-dA/dt)= log dD/dt+x is valid then value of x is
Answer» 53. For a reaction 2A+ 3B gives C + 4D the following expression log (-dA/dt)= log dD/dt+x is valid then value of x is

Discussion

17.	82 3,3-dimethylbutene is treated with Hg(OAc)2/NaBH4 then why 3,3dimethyl-2-butanol will be the major product?
Answer» 82 3,3-dimethylbutene is treated with Hg(OAc)2/NaBH4 then why 3,3dimethyl-2-butanol will be the major product?

Discussion

18.	If 3.01×1020 molecules are removed from 98 mg of H2SO4, then the number of moles of H2SO4 left will be :
Answer» If $3.01 \times 10^{20}$ molecules are removed from $98 mg$ of $H_{2} S O_{4}$ , then the number of moles of $H_{2} S O_{4}$ left will be :

Discussion

19.	Most stable hydrogen bonding present in :-(1) F–H-----F–H(4) F–H------F–
Answer» Most stable hydrogen bonding present in :- (1) F–H-----F–H (4) F–H------F–

Discussion

20.	Out of o-nitrophenol and o-cresol which is more acidic?
Answer» Out of o-nitrophenol and o-cresol which is more acidic?

Discussion

21.	Solubility of calcium phosphate (molecular mass, M) in water is W g per 100 mL at 25°C. Its solubility product at 25°C will be approximately -
Answer» Solubility of calcium phosphate (molecular mass, M) in water is W g per 100 mL at 25°C. Its solubility product at 25°C will be approximately -

Discussion

22.	Principle of cuolomb law
Answer» Principle of cuolomb law

Discussion

23.	What is the meaning of space lattice? Diffrence b/w long range orser and short range order in simple language.
Answer» What is the meaning of space lattice? Diffrence b/w long range orser and short range order in simple language.

Discussion

24.	Hexanon and CH2CHCOCH3 reaction product in presence of EtoNa and EtO
Answer» Hexanon and CH2CHCOCH3 reaction product in presence of EtoNa and EtO

Discussion

25.	Explain why \cdot CH_3 is planar whereas \cdot CF_3 is pyramidal.
Answer» Explain why \cdot CH_3 is planar whereas \cdot CF_3 is pyramidal.

Discussion

26.	what is enthalpy of atomisation?
Answer» what is enthalpy of atomisation?

Discussion

27.	C2h4+nbs+ccl4=?
Answer» C2h4+nbs+ccl4=?

Discussion

28.	An ideal gas expand adiabatically so that it's temperature varies with volume as T is proportional to V^3/4, then the value of Cp/Cv of the gas is
Answer» An ideal gas expand adiabatically so that it's temperature varies with volume as T is proportional to V^3/4, then the value of Cp/Cv of the gas is

Discussion

29.	Choose the correct ray diagram.
Answer» Choose the correct ray diagram.

29.

Choose the correct ray diagram.

Answer»

Choose the correct ray diagram.

Discussion

30.	2NaCl + H2SO4-------Na2SO4 + 2HCl ORNaCl + H2SO4 ------NaHSO4 + HClWhich one is correct
Answer» 2NaCl + H2SO4-------Na2SO4 + 2HCl OR NaCl + H2SO4 ------NaHSO4 + HCl Which one is correct

Discussion

31.	The bond dissociation energy of X2 Y2 andXY are in ratio. ∆H for formation of XY is -200kjmol.
Answer» The bond dissociation energy of X2 Y2 andXY are in ratio. ∆H for formation of XY is -200kjmol.

Discussion

32.	18. 24 g of carbon is burnt in presence of air gas produced from 1M dibasic acid when passed through 1 liter water ,then correct statement is? 1. 12 g C react to form co2 2. 8 g C react to form co 3. 16 g C react to form co 4. 9 g C react to form co2
Answer» 18. 24 g of carbon is burnt in presence of air gas produced from 1M dibasic acid when passed through 1 liter water ,then correct statement is? 1. 12 g C react to form co2 2. 8 g C react to form co 3. 16 g C react to form co 4. 9 g C react to form co2

Discussion

33.	3-hexyne can be converted to trans-3-hexene by the action of:
Answer» 3-hexyne can be converted to trans-3-hexene by the action of:

Discussion

34.	Draw the electron dot structure for F2.
Answer» Draw the electron dot structure for $F_{2}$ .

Discussion

35.	Explainwhy Cu+ion is not stable in aqueous solutions?
Answer» Explain why Cu⁺ ion is not stable in aqueous solutions?

Discussion

36.	The ratio of magnetic moments of Fe(III) and Co(II) is:
Answer» The ratio of magnetic moments of $F e (I I I)$ and $C o (I I)$ is:

Discussion

37.	For the reaction A+B→product rate law is rate =k[A]2[B] where k=5×10−5 mol−2 L2 min−1 Determine the time (in minutes) in which concentration of 'A' becomes half of its initial concentration. If initial concentration of A and B are 0.2 M and 2×103 M respectively.
Answer» For the reaction $A + B \to product$ rate law is rate $= k [A]^{2} [B]$ where $k = 5 \times 10^{- 5} m o l^{- 2} L^{2} m i n^{- 1}$ Determine the time (in minutes) in which concentration of 'A' becomes half of its initial concentration. If initial concentration of A and B are $0.2 M$ and $2 \times 10^{3} M$ respectively.

Discussion

38.	The order in which the electropositive character increases is
Answer» The order in which the electropositive character increases is

Discussion

39.	What will be the products formed when n-octane and n-nonane are aromatized? Which are the major and minor ones ?
Answer» What will be the products formed when n-octane and n-nonane are aromatized? Which are the major and minor ones ?

Discussion

40.	Mass of NaOH required to react completely with 100 ml of 0.2 M H2SO4 is x. Then the value of 5x is (in gram)?
Answer» Mass of NaOH required to react completely with 100 ml of 0.2 M H2SO4 is x. Then the value of 5x is (in gram)?

Discussion

41.	Identify the product Y in the following reaction sequence: CH3CHO+CH3MgIEther−−−→XH2O−−→Y
Answer» Identify the product Y in the following reaction sequence: $C H_{3} C H O + C H_{3} M g I E t h e r - -- \to X H_{2} O - - \to Y$

Discussion

42.	Compound (C) is:
Answer» Compound (C) is:

Discussion

43.	47. Assertion: In h2so5, oxidation number of S is +6 reason: There is one peroxide linkage in h2so5 a) both assertion and reason are correct and reason explains the assertion b)both assertion and reason are correct but reason does not explain the assertion c)assertion is correct, reason is wrong d)both assertion and reason are wrong.
Answer» 47. Assertion: In h2so5, oxidation number of S is +6 reason: There is one peroxide linkage in h2so5 a) both assertion and reason are correct and reason explains the assertion b)both assertion and reason are correct but reason does not explain the assertion c)assertion is correct, reason is wrong d)both assertion and reason are wrong.

Discussion

44.	Why chlorine shows -I effect but not -M ?instead it shows +M efect and develops positive charge
Answer» Why chlorine shows -I effect but not -M ?instead it shows +M efect and develops positive charge

Discussion

45.	What are all the formulas of mole concept ? And when they should be used ? Among them explain the normality part and gram equivalent and gram equivalent weight and their interior meaning. Pleas
Answer» What are all the formulas of mole concept ? And when they should be used ? Among them explain the normality part and gram equivalent and gram equivalent weight and their interior meaning. Pleas

Discussion

46.	An electromagnetic radiation with the highest wavelength results when an electron in He+ ion from n=4 jumps to:
Answer» An electromagnetic radiation with the highest wavelength results when an electron in $H e^{+}$ ion from $n = 4$ jumps to:

Discussion

47.	Critical temperature for carbon dioxide and methane are 31.1 °C and –81.9 °C respectively. Which of these has stronger intermolecular forces and why?
Answer» Critical temperature for carbon dioxide and methane are 31.1 °C and –81.9 °C respectively. Which of these has stronger intermolecular forces and why?

Discussion

48.	Read the following and select one the correct answer:Statement I: LiCl is predominantly a covalent compoundStatement II: Electronegativity difference between Li and Cl is too small
Answer» Read the following and select one the correct answer: Statement I: $L i C l$ is predominantly a covalent compound Statement II: Electronegativity difference between Li and Cl is too small

48.

Read the following and select one the correct answer:Statement I: LiCl is predominantly a covalent compoundStatement II: Electronegativity difference between Li and Cl is too small

Answer»

Read the following and select one the correct answer:

Statement I: $L i C l$ is predominantly a covalent compound

Statement II: Electronegativity difference between Li and Cl is too small

Discussion

49.	The current developed due to revolution of an electron in ground state of an atom (Z=a) is i0 then for another atom (Z=2a), the current developed due to revolution of an electron in first excited state is -
Answer» The current developed due to revolution of an electron in ground state of an atom $(Z = a)$ is $i_{0}$ then for another atom $(Z = 2 a)$ , the current developed due to revolution of an electron in first excited state is -

Discussion

50.	For deriving the Ideal Gas equation , it is given to consider Boyle's law, Charles law and Avagadro law but not stated to consider Gay Lussacs law . But why not considered Gay Lussacs law?
Answer» For deriving the Ideal Gas equation , it is given to consider Boyle's law, Charles law and Avagadro law but not stated to consider Gay Lussacs law . But why not considered Gay Lussacs law?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Which of the following statements is/are true for Mohr’s salt?

Which one of the following is most stable ?

Difference btw 52 g of he and 52 u of he.( Please explain in brief)

Find the major product?

The key step in cannizzaro’s reaction is the intermolecular shift of:

Question 1Which of the following correctly represents 360 g of water?(i) 2 moles of H2O(ii) 20 moles of water(iii) 6.022×1023 molecules of water(iv) 1.2044×1025 molecules of water(a) (i)(b) (i) and (iv)(c) (ii) and (iii)(d) (ii) and (iv)

Freezing point of C6H6(l) is 5.50C. If 10 g of C4H10 is mixed with 200 g of C6H6(l). Calculate freezing point of solutionkf=5.12oC/m.

Ethyl bromide can be converted into ethyl alcohol by [KCET 1989]

7 The solubility of srf2 at 25degree Celsius is 0.0122g/l what will be ksp of srf2 at this temp (mol wt srf2 125.6g)

Ethylamine can be prepared by the action of bromine and caustic potash on [CPMT 1994]

Two flasks A and B have equal volumes. Flask A containing H2 gas is maintained at 27 oC while B containing an equal mass of CH2S gas is maintained at 177 oC. Using average velocity calculate by how many times the molecules of H2 gas are moving faster than CH2S gas.

24. Which of this following has least bond angle option are (1) CH4 (2) BH3 (3) H2O (4) NH3

which hs greater +I .-I and +R =OH or OCH3 in bemzene

In the reaction Y is CH3CH2CH2OHPCl3−−−→Xalc.KOH−−−−−→Y,

Ten grams of ice at 0C is added to a beaker containing 30 grams of water at25^° C. what is the final temperature or the system when it comes to thermalequilibrium (The specitic heat of waters eal gm/C and latent heat of meltingof ice is 80 calgm):(2 75 C(4) -1.25^° C(3)12.5

53. For a reaction 2A+ 3B gives C + 4D the following expression log (-dA/dt)= log dD/dt+x is valid then value of x is

82 3,3-dimethylbutene is treated with Hg(OAc)2/NaBH4 then why 3,3dimethyl-2-butanol will be the major product?

If 3.01×1020 molecules are removed from 98 mg of H2SO4, then the number of moles of H2SO4 left will be :

Most stable hydrogen bonding present in :-(1) F–H-----F–H(4) F–H------F–

Out of o-nitrophenol and o-cresol which is more acidic?

Solubility of calcium phosphate (molecular mass, M) in water is W g per 100 mL at 25°C. Its solubility product at 25°C will be approximately -

Principle of cuolomb law

What is the meaning of space lattice? Diffrence b/w long range orser and short range order in simple language.

Hexanon and CH2CHCOCH3 reaction product in presence of EtoNa and EtO

Explain why \cdot CH_3 is planar whereas \cdot CF_3 is pyramidal.

what is enthalpy of atomisation?

C2h4+nbs+ccl4=?

An ideal gas expand adiabatically so that it's temperature varies with volume as T is proportional to V^3/4, then the value of Cp/Cv of the gas is

Choose the correct ray diagram.

2NaCl + H2SO4-------Na2SO4 + 2HCl ORNaCl + H2SO4 ------NaHSO4 + HClWhich one is correct

The bond dissociation energy of X2 Y2 andXY are in ratio. ∆H for formation of XY is -200kjmol.

18. 24 g of carbon is burnt in presence of air gas produced from 1M dibasic acid when passed through 1 liter water ,then correct statement is? 1. 12 g C react to form co2 2. 8 g C react to form co 3. 16 g C react to form co 4. 9 g C react to form co2

3-hexyne can be converted to trans-3-hexene by the action of:

Draw the electron dot structure for F2.

Explainwhy Cu+ion is not stable in aqueous solutions?

The ratio of magnetic moments of Fe(III) and Co(II) is:

For the reaction A+B→product rate law is rate =k[A]2[B] where k=5×10−5 mol−2 L2 min−1 Determine the time (in minutes) in which concentration of 'A' becomes half of its initial concentration. If initial concentration of A and B are 0.2 M and 2×103 M respectively.

The order in which the electropositive character increases is

What will be the products formed when n-octane and n-nonane are aromatized? Which are the major and minor ones ?

Mass of NaOH required to react completely with 100 ml of 0.2 M H2SO4 is x. Then the value of 5x is (in gram)?

Identify the product Y in the following reaction sequence: CH3CHO+CH3MgIEther−−−→XH2O−−→Y

Compound (C) is:

Why chlorine shows -I effect but not -M ?instead it shows +M efect and develops positive charge

What are all the formulas of mole concept ? And when they should be used ? Among them explain the normality part and gram equivalent and gram equivalent weight and their interior meaning. Pleas

An electromagnetic radiation with the highest wavelength results when an electron in He+ ion from n=4 jumps to:

Critical temperature for carbon dioxide and methane are 31.1 °C and –81.9 °C respectively. Which of these has stronger intermolecular forces and why?

Read the following and select one the correct answer:Statement I: LiCl is predominantly a covalent compoundStatement II: Electronegativity difference between Li and Cl is too small

The current developed due to revolution of an electron in ground state of an atom (Z=a) is i0 then for another atom (Z=2a), the current developed due to revolution of an electron in first excited state is -

For deriving the Ideal Gas equation , it is given to consider Boyle's law, Charles law and Avagadro law but not stated to consider Gay Lussacs law . But why not considered Gay Lussacs law?