46295 + Interview Questions in Chemistry

1.	Which one of the following hydrogen halide is a liquid?
Answer» Which one of the following hydrogen halide is a liquid?

Discussion

2.	आज देश की आर्थिक स्थिति के संदर्भ में निम्नलिखित वाक्य को एक अनुच्छेद में स्पष्ट कीजिए-'जैसे हज़ार धारा होकर गंगा समुद्र में मिली हैं, वैसी ही तुम्हारी लक्ष्मी हज़ार तरह से इंग्लैड, फरांसीस, जर्मनी, अमेरिका को जाती हैं।'
Answer» आज देश की आर्थिक स्थिति के संदर्भ में निम्नलिखित वाक्य को एक अनुच्छेद में स्पष्ट कीजिए- 'जैसे हज़ार धारा होकर गंगा समुद्र में मिली हैं, वैसी ही तुम्हारी लक्ष्मी हज़ार तरह से इंग्लैड, फरांसीस, जर्मनी, अमेरिका को जाती हैं।'

Discussion

3.	19.What are the degree of freedom of monoatomi, diatomic, triatomic gases and why?
Answer» 19.What are the degree of freedom of monoatomi, diatomic, triatomic gases and why?

Discussion

4.	Factorise a4−1 is ____
Answer» Factorise $a^{4} - 1$ is ____

Discussion

5.	58. Explain the relationship between intensity and frequency? Is inversely or directly proportional and how?
Answer» 58. Explain the relationship between intensity and frequency? Is inversely or directly proportional and how?

Discussion

6.	Which of the following elements are manufactured by electrolytic extraction?
Answer» Which of the following elements are manufactured by electrolytic extraction?

Discussion

7.	The total number of hybridised orbitals in methane molecule is:
Answer» The total number of hybridised orbitals in methane molecule is:

Discussion

8.

Match the type of the thermocouple with its characteristics. List-I List-II Type E Chromel-Constantan Low cost Type J Fe-Alumel Good stability Type T Cu-Constantan High precision Type S Pt- PtRh High output

Answer» Match the type of the thermocouple with its characteristics.

List-I	List-II
Type E Chromel-Constantan	Low cost
Type J Fe-Alumel	Good stability
Type T Cu-Constantan	High precision
Type S Pt- PtRh	High output

Discussion

9.	The first ionization energy of boron is less than that of beryllium because:
Answer» The first ionization energy of boron is less than that of beryllium because:

Discussion

10.	Ifand,then verify that(i) (ii)
Answer» If and, then verify that (i) (ii)

10.

Ifand,then verify that(i) (ii)

Answer»

If

and,
then verify that

(i)

(ii)

Discussion

11.	How to remember the difference between isotopes and isobards without confusion?
Answer» How to remember the difference between isotopes and isobards without confusion?

Discussion

12.	The enthalpy change involved in oxidation of glucose is −2880 kJ mol−1. 25% of this energy is available for muscular work. If 100 kJ of muscular work is needed to walk one km, then the maximum distance (in km) that a person will be able to walk after taking 150 g of glucose is:
Answer» The enthalpy change involved in oxidation of glucose is $- 2880 {kJ mol}^{- 1}$ . $25 %$ of this energy is available for muscular work. If $100 kJ$ of muscular work is needed to walk one km, then the maximum distance $(in km)$ that a person will be able to walk after taking $150 g$ of glucose is:

Discussion

13.	Potassium carbonate cannot be prepared by Solvay process. Why?
Answer» Potassium carbonate cannot be prepared by Solvay process. Why?

Discussion

14.	If 5.85 gms of NaCl are dissolved in 90 gms of water, the mole fraction of NaCl is
Answer» If 5.85 gms of NaCl are dissolved in 90 gms of water, the mole fraction of NaCl is

Discussion

15.	In an ideal gas turbine plant, the maximum and minimum temperature are 1100 K and 294 K and the pressure ratio is 10. Due to new development in the field of materials available for blades, the maximum temperature allowed in the cycle can be increased to 1245 K keeping pressure ratio unchanged. The percentage gain in efficiency of the cycle is _______% ( Correct to decimal place)0
Answer» In an ideal gas turbine plant, the maximum and minimum temperature are 1100 K and 294 K and the pressure ratio is 10. Due to new development in the field of materials available for blades, the maximum temperature allowed in the cycle can be increased to 1245 K keeping pressure ratio unchanged. The percentage gain in efficiency of the cycle is _______% ( Correct to decimal place) 0

Discussion

16.	The ratio of number of σ and π bonds in benzene is:
Answer» The ratio of number of $σ$ and $π$ bonds in benzene is:

Discussion

17.	Unimolecular nucleophilic substitution is favoured by:
Answer» Unimolecular nucleophilic substitution is favoured by:

Discussion

18.	if there are 3 electrons present in each orbital and bohr_burry principle is not followed in filling of electrons, the number of elements in 4th period of modern periodic table will be 1.18 2.27 3.32 4.4
Answer» if there are 3 electrons present in each orbital and bohr_burry principle is not followed in filling of electrons, the number of elements in 4th period of modern periodic table will be 1.18 2.27 3.32 4.4

Discussion

19.	Mole of thiosulphate ions required to react completelywith one mole of permanganate ion in faintly alkalinemedium is
Answer» Mole of thiosulphate ions required to react completelywith one mole of permanganate ion in faintly alkalinemedium is

Discussion

20.	X and Y respectively, are:
Answer» X and Y respectively, are:

Discussion

21.	WHAT IS DIFFERENCE BETWEEN FRAGMENTATIO AND REGENRATION ?
Answer» WHAT IS DIFFERENCE BETWEEN FRAGMENTATIO AND REGENRATION ?

Discussion

22.	Which of the following is an optically active compound.
Answer» Which of the following is an optically active compound.

Discussion

23.	In the redox reaction,10FeC2O4+xKMnO4+24H2SO4→5Fe2(SO4)3+20CO2+yMnSO4+3K2SO4+24H2Othe value of x and y are, respectively:
Answer» In the redox reaction, $10 F e C_{2} O_{4} + x K M n O_{4} + 24 H_{2} S O_{4} \to 5 F e_{2} (S O_{4})_{3} + 20 C O_{2} + y M n S O_{4} + 3 K_{2} S O_{4} + 24 H_{2} O$ the value of $x$ and $y$ are, respectively:

Discussion

24.	two students rohan and rahuul are having an argument. during argument rohan is saying that carbonate ion is an Arrhenius base while rahul thinks that carbonate ion is brownstead lowry base who is correct ? a) Rahul B)Rohan C) Both D) None
Answer» two students rohan and rahuul are having an argument. during argument rohan is saying that carbonate ion is an Arrhenius base while rahul thinks that carbonate ion is brownstead lowry base who is correct ? a) Rahul B)Rohan C) Both D) None

Discussion

25.	Anaemia is caused due to the deficiency of ___.
Answer» Anaemia is caused due to the deficiency of ___.

Discussion

26.	The number of P−O−P bonds in cyclic meta phosphoric acid is :
Answer» The number of $P - O - P$ bonds in cyclic meta phosphoric acid is :

Discussion

27.	3KClO3+3H2SO4→3KHSO4+HClO4+2ClO2+H2O If molecular weight of KClO3 is M, then equivalent weight of KClO3 is:
Answer» $3 K C l O_{3} + 3 H_{2} S O_{4} \to 3 K H S O_{4} + H C l O_{4} + 2 C l O_{2} + H_{2} O$ If molecular weight of $K C l O_{3}$ is $M$ , then equivalent weight of $K C l O_{3}$ is:

Discussion

28.	tert-Butyl alcohol, when heated with H2SO4, gives an alkene. Which of the following sequence will convert the alkene to 3-methylbutanoic acid?1 - H3O+, hydrolysis2 – treatment with CN−3 – HBr, peroxide
Answer» tert-Butyl alcohol, when heated with $H_{2} S O_{4}$ , gives an alkene. Which of the following sequence will convert the alkene to 3-methylbutanoic acid? 1 - $H_{3} O^{+},$ hydrolysis 2 – treatment with $C N^{-}$ 3 – $H B r,$ peroxide

28.

tert-Butyl alcohol, when heated with H2SO4, gives an alkene. Which of the following sequence will convert the alkene to 3-methylbutanoic acid?1 - H3O+, hydrolysis2 – treatment with CN−3 – HBr, peroxide

Answer»

tert-Butyl alcohol, when heated with $H_{2} S O_{4}$ , gives an alkene. Which of the following sequence will convert the alkene to 3-methylbutanoic acid?

1 - $H_{3} O^{+},$ hydrolysis

2 – treatment with $C N^{-}$

3 – $H B r,$ peroxide

Discussion

29.	The number of orbitals in the shell in which the h-subshell first arises is:
Answer» The number of orbitals in the shell in which the h-subshell first arises is:

Discussion

30.	Explainthe important aspects of resonance with reference to the ion.
Answer» Explain the important aspects of resonance with reference to the ion.

Discussion

31.	The C−H bond distance is the longest in :
Answer» The $C - H$ bond distance is the longest in :

Discussion

32.	P-nitrophenol is more acidic than o-nitrophenol . But o-nitro benzoic acid is more stronger than p-nitro benzoic acid. Explain
Answer» P-nitrophenol is more acidic than o-nitrophenol . But o-nitro benzoic acid is more stronger than p-nitro benzoic acid. Explain

Discussion

33.	A vessel of uniform cross-section of length 500 cm as shown in figure is divided in two parts by a weightless and frictionless piston.One part contains 5 moles of He(g) and other part contains 2 moles of H2(g) and 4 mole of O2(g) added at the same temperature are pressure in which reaction takes place finally and vessel cooled to 300 K and 1 atm. What is the length of He compartment? (Assume volume of piston and volume of H2O(l) formed are negligible)
Answer» A vessel of uniform cross-section of length 500 cm as shown in figure is divided in two parts by a weightless and frictionless piston.One part contains 5 moles of He(g) and other part contains 2 moles of $H_{2}$ (g) and 4 mole of $O_{2}$ (g) added at the same temperature are pressure in which reaction takes place finally and vessel cooled to 300 K and 1 atm. What is the length of He compartment? (Assume volume of piston and volume of $H_{2} O$ (l) formed are negligible)

33.

A vessel of uniform cross-section of length 500 cm as shown in figure is divided in two parts by a weightless and frictionless piston.One part contains 5 moles of He(g) and other part contains 2 moles of H2(g) and 4 mole of O2(g) added at the same temperature are pressure in which reaction takes place finally and vessel cooled to 300 K and 1 atm. What is the length of He compartment? (Assume volume of piston and volume of H2O(l) formed are negligible)

Answer»

A vessel of uniform cross-section of length 500 cm as shown in figure is divided in two parts by a weightless and frictionless piston.One part contains 5 moles of He(g) and other part contains 2 moles of $H_{2}$ (g) and 4 mole of $O_{2}$ (g) added at the same temperature are pressure in which reaction takes place finally and vessel cooled to 300 K and 1 atm. What is the length of He compartment? (Assume volume of piston and volume of $H_{2} O$ (l) formed are negligible)

Discussion

34.	Ethyl magnesium iodide reacts with which of the following compound to give 2 - methyl butan - 2 - ol after hydrolysis?
Answer» Ethyl magnesium iodide reacts with which of the following compound to give 2 - methyl butan - 2 - ol after hydrolysis?

Discussion

35.	CH2=CH2PhCO3H−−−−−→AH3O⊕−−−→BPI3,△−−−−→(2 eq)C Structure of C is
Answer» $C H_{2} = C H_{2} P h C O_{3} H - ---- \to A H_{3} O^{\oplus} - -- \to B P I_{3}, △ - --- \to (2 e q) C$ Structure of C is

Discussion

36.	The reaction N2O4 (g) ⇌ 2NO2 (g) iscarried out at 298 K and 20 bar. Five moles of each of N2O4andNO2, are taken initially. Given: ΔfG∘(N2O4) = 100 kJ mol−1 and ΔfG∘(NO2) = 50 kJ mol−1.Choose the appropriate option: The values ofΔG and K∘p at 298 K are:
Answer» The reaction N $_{2}$ O $_{4}$ (g) $⇌$ 2NO $_{2}$ (g) is carried out at 298 K and 20 bar. Five moles of each of N $_{2}$ O $_{4}$ and NO $_{2}$ , are taken initially. Given: $Δ$ $_{f}$ G $^{\circ}$ (N $_{2}$ O $_{4}$ ) = 100 kJ mol $^{- 1}$ and $Δ$ $_{f}$ G $^{\circ}$ (NO $_{2}$ ) = 50 kJ mol $^{- 1}$ .Choose the appropriate option: The values of $Δ$ G and K $^{\circ}$ $_{p}$ at 298 K are:

Discussion

37.	58 Is conjugation possible in the structure CH2=CH-O-H
Answer» 58 Is conjugation possible in the structure CH2=CH-O-H

Discussion

38.	14.The third member of the family of alkenynes has the molecular formula (A)C6H6 (B)C5H6 (C)C6H8 (D)C4H4
Answer» 14.The third member of the family of alkenynes has the molecular formula (A)C6H6 (B)C5H6 (C)C6H8 (D)C4H4

Discussion

39.	the correct formula to calculate yhe hydroxyl ion concentration in aqueous sol^{n } of NH4NO3 i
Answer» the correct formula to calculate yhe hydroxyl ion concentration in aqueous sol^{n } of NH4NO3 i

Discussion

40.	Formula mass of NaCl is 58.5 g/mol The average dis†an ce between adjascent Na^{+ }and Cl^{- }ions in the crystall is 2.^{}814 × 10^{-8 }cm. Calculate the value of density of its pure form.
Answer» Formula mass of NaCl is 58.5 g/mol The average dis†an ce between adjascent Na^{+ }and Cl^{- }ions in the crystall is 2.^{}814 × 10^{-8 }cm. Calculate the value of density of its pure form.

Discussion

41.	Which of the following is/are the requirements for the formation of the metallic bond? (i) Formation of negative ions. (ii) Formation of positive ions. (iii) Freely moving electrons. (iv) Sharing of electrons between two atoms.
Answer» Which of the following is/are the requirements for the formation of the metallic bond? (i) Formation of negative ions. (ii) Formation of positive ions. (iii) Freely moving electrons. (iv) Sharing of electrons between two atoms.

Discussion

42.	Calculate the fraction of nitrogen molecule at 101.325k pascal and 300k whose speed is in range of ∪ mps +0.0005∪ mps to ∪ mps-0.005∪ mps?
Answer» Calculate the fraction of nitrogen molecule at 101.325k pascal and 300k whose speed is in range of ∪ mps +0.0005∪ mps to ∪ mps-0.005∪ mps?

Discussion

43.	The orbitals involved in case of sp3d2 hybridisation is
Answer» The orbitals involved in case of $s p^{3} d^{2}$ hybridisation is

Discussion

44.	A thin copper wire of length L increases in length by 1% when heated from temperature T1 to T2. What is the percentage change in area when a thin copper plate having dimensions 2L× L is heated from T1 to T2?A)1%2)2%3)3%D)4%
Answer» A thin copper wire of length L increases in length by 1% when heated from temperature T1 to T2. What is the percentage change in area when a thin copper plate having dimensions 2L× L is heated from T1 to T2? A)1% 2)2% 3)3% D)4%

Discussion

45.	What ia vsepr theory
Answer» What ia vsepr theory

Discussion

46.	46. When 2-hydroxy cyclopentanoic carboxylic acid react with K2Cr2O7 then product formed is? 1. Cyclopentene 2. Cyclopentanone 3. Cyclopentanecarboxylic acid 4. Cyclopentane
Answer» 46. When 2-hydroxy cyclopentanoic carboxylic acid react with K2Cr2O7 then product formed is? 1. Cyclopentene 2. Cyclopentanone 3. Cyclopentanecarboxylic acid 4. Cyclopentane

Discussion

47.	Ammonia gas if passed into water, yielding a solution of density 0.93 g/cm3 and containing 18.6% NH3 by weight. The mass of NH3 per cc of the solution is
Answer» Ammonia gas if passed into water, yielding a solution of density 0.93 g/cm3 and containing 18.6% NH3 by weight. The mass of NH3 per cc of the solution is

Discussion

48.	gay lussac law of combining volume is not properly explained.I did not get it.Again explain it and properly.
Answer» gay lussac law of combining volume is not properly explained. I did not get it. Again explain it and properly.

Discussion

49.	41.Assertion reason type. : A: no. Of covalent bond in most stable structure of so3 is 6 R: maximum covalency of sulphur atom is 4
Answer» 41.Assertion reason type. : A: no. Of covalent bond in most stable structure of so3 is 6 R: maximum covalency of sulphur atom is 4

Discussion

50.	27. The enthalpy of neutralisation of four acids HA, HB, HC and HD with NaOH are 13, 12, 11,10 kcal/mol. Which salt has maximum degree of hydrolysis ? (1) 1M NaA (2) 1M NaB (3) 1M NaC (4) 1M NaD
Answer» 27. The enthalpy of neutralisation of four acids HA, HB, HC and HD with NaOH are 13, 12, 11,10 kcal/mol. Which salt has maximum degree of hydrolysis ? (1) 1M NaA (2) 1M NaB (3) 1M NaC (4) 1M NaD

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Which one of the following hydrogen halide is a liquid?

19.What are the degree of freedom of monoatomi, diatomic, triatomic gases and why?

Factorise a4−1 is ____

58. Explain the relationship between intensity and frequency? Is inversely or directly proportional and how?

Which of the following elements are manufactured by electrolytic extraction?

The total number of hybridised orbitals in methane molecule is:

Match the type of the thermocouple with its characteristics. List-I List-II Type E Chromel-Constantan Low cost Type J Fe-Alumel Good stability Type T Cu-Constantan High precision Type S Pt- PtRh High output

The first ionization energy of boron is less than that of beryllium because:

Ifand,then verify that(i) (ii)

How to remember the difference between isotopes and isobards without confusion?

The enthalpy change involved in oxidation of glucose is −2880 kJ mol−1. 25% of this energy is available for muscular work. If 100 kJ of muscular work is needed to walk one km, then the maximum distance (in km) that a person will be able to walk after taking 150 g of glucose is:

Potassium carbonate cannot be prepared by Solvay process. Why?

If 5.85 gms of NaCl are dissolved in 90 gms of water, the mole fraction of NaCl is

The ratio of number of σ and π bonds in benzene is:

Unimolecular nucleophilic substitution is favoured by:

if there are 3 electrons present in each orbital and bohr_burry principle is not followed in filling of electrons, the number of elements in 4th period of modern periodic table will be 1.18 2.27 3.32 4.4

Mole of thiosulphate ions required to react completelywith one mole of permanganate ion in faintly alkalinemedium is

X and Y respectively, are:

WHAT IS DIFFERENCE BETWEEN FRAGMENTATIO AND REGENRATION ?

Which of the following is an optically active compound.

In the redox reaction,10FeC2O4+xKMnO4+24H2SO4→5Fe2(SO4)3+20CO2+yMnSO4+3K2SO4+24H2Othe value of x and y are, respectively:

two students rohan and rahuul are having an argument. during argument rohan is saying that carbonate ion is an Arrhenius base while rahul thinks that carbonate ion is brownstead lowry base who is correct ? a) Rahul B)Rohan C) Both D) None

Anaemia is caused due to the deficiency of ___.

The number of P−O−P bonds in cyclic meta phosphoric acid is :

3KClO3+3H2SO4→3KHSO4+HClO4+2ClO2+H2O If molecular weight of KClO3 is M, then equivalent weight of KClO3 is:

tert-Butyl alcohol, when heated with H2SO4, gives an alkene. Which of the following sequence will convert the alkene to 3-methylbutanoic acid?1 - H3O+, hydrolysis2 – treatment with CN−3 – HBr, peroxide

The number of orbitals in the shell in which the h-subshell first arises is:

Explainthe important aspects of resonance with reference to the ion.

The C−H bond distance is the longest in :

P-nitrophenol is more acidic than o-nitrophenol . But o-nitro benzoic acid is more stronger than p-nitro benzoic acid. Explain

Ethyl magnesium iodide reacts with which of the following compound to give 2 - methyl butan - 2 - ol after hydrolysis?

CH2=CH2PhCO3H−−−−−→AH3O⊕−−−→BPI3,△−−−−→(2 eq)C Structure of C is

The reaction N2O4 (g) ⇌ 2NO2 (g) iscarried out at 298 K and 20 bar. Five moles of each of N2O4andNO2, are taken initially. Given: ΔfG∘(N2O4) = 100 kJ mol−1 and ΔfG∘(NO2) = 50 kJ mol−1.Choose the appropriate option: The values ofΔG and K∘p at 298 K are:

58 Is conjugation possible in the structure CH2=CH-O-H

14.The third member of the family of alkenynes has the molecular formula (A)C6H6 (B)C5H6 (C)C6H8 (D)C4H4

the correct formula to calculate yhe hydroxyl ion concentration in aqueous sol^{n } of NH4NO3 i

Formula mass of NaCl is 58.5 g/mol The average dis†an ce between adjascent Na^{+ }and Cl^{- }ions in the crystall is 2.^{}814 × 10^{-8 }cm. Calculate the value of density of its pure form.

Which of the following is/are the requirements for the formation of the metallic bond? (i) Formation of negative ions. (ii) Formation of positive ions. (iii) Freely moving electrons. (iv) Sharing of electrons between two atoms.

Calculate the fraction of nitrogen molecule at 101.325k pascal and 300k whose speed is in range of ∪ mps +0.0005∪ mps to ∪ mps-0.005∪ mps?

The orbitals involved in case of sp3d2 hybridisation is

A thin copper wire of length L increases in length by 1% when heated from temperature T1 to T2. What is the percentage change in area when a thin copper plate having dimensions 2L× L is heated from T1 to T2?A)1%2)2%3)3%D)4%

What ia vsepr theory

46. When 2-hydroxy cyclopentanoic carboxylic acid react with K2Cr2O7 then product formed is? 1. Cyclopentene 2. Cyclopentanone 3. Cyclopentanecarboxylic acid 4. Cyclopentane

Ammonia gas if passed into water, yielding a solution of density 0.93 g/cm3 and containing 18.6% NH3 by weight. The mass of NH3 per cc of the solution is

gay lussac law of combining volume is not properly explained.I did not get it.Again explain it and properly.

41.Assertion reason type. : A: no. Of covalent bond in most stable structure of so3 is 6 R: maximum covalency of sulphur atom is 4

27. The enthalpy of neutralisation of four acids HA, HB, HC and HD with NaOH are 13, 12, 11,10 kcal/mol. Which salt has maximum degree of hydrolysis ? (1) 1M NaA (2) 1M NaB (3) 1M NaC (4) 1M NaD