46295 + Interview Questions in Chemistry

1.	Majority of the reactions of alkynes are the examples of:
Answer» Majority of the reactions of alkynes are the examples of:

Discussion

2.	Benzoic acid disassociate or associate in benzene solvent? And benzoic acid disassociate or associate in water solvent?
Answer» Benzoic acid disassociate or associate in benzene solvent? And benzoic acid disassociate or associate in water solvent?

Discussion

3.	How the vernier scale reading is calculated
Answer» How the vernier scale reading is calculated

Discussion

4.	(A) α−Amino acid(C3H7NO3)MeOH−−−−→HCl(B)(C4H10NO3Cl)PCl5−−−→(C)(C4H9NO2Cl2) (C)(C4H9NO2Cl2)H3O+−−−→(D)(C3H6NO2Cl)Na−Hg−−−−−→HClAlanine Compound (B) is
Answer» $(A) α - Amino acid (C_{3} H_{7} N O_{3}) M e O H - --- \to H C l (B) (C_{4} H_{10} N O_{3} C l) P C l_{5} - -- \to (C) (C_{4} H_{9} N O_{2} C l_{2})$ $(C) (C_{4} H_{9} N O_{2} C l_{2}) H_{3} O^{+} - -- \to (D) (C_{3} H_{6} N O_{2} C l) N a - H g - ---- \to H C l Alanine$ Compound (B) is

Discussion

5.	which factor is most responsible for the increase i boiling points of noble gases from He to Xe 1.decrese in IE 2.monoatomic nature 3.decrease in polarisibilty 4.increase in polarisibility
Answer» which factor is most responsible for the increase i boiling points of noble gases from He to Xe 1.decrese in IE 2.monoatomic nature 3.decrease in polarisibilty 4.increase in polarisibility

Discussion

6.	15. In a given solution Zn^{2+} is present at the concentrationof 10^{-2}(M). The given solution is saturated H_2S. To obtain the precipitation of ZnS, what should be the minimum pH required in nearest possible integers?Given: In aqueous solution ionic product of H_2S is 10^{-22}and K_{sp} of ZnS 10^{-21}.
Answer» 15. In a given solution Zn^{2+} is present at the concentrationof 10^{-2}(M). The given solution is saturated H_2S. To obtain the precipitation of ZnS, what should be the minimum pH required in nearest possible integers?Given: In aqueous solution ionic product of H_2S is 10^{-22}and K_{sp} of ZnS 10^{-21}.

Discussion

7.	benzyl free radical is aromatic because it has __ p orbitals and __ unpaired electrons ?? fill the blanks with suitable number ?
Answer» benzyl free radical is aromatic because it has __ p orbitals and __ unpaired electrons ?? fill the blanks with suitable number ?

Discussion

8.	In a closed system A(s)=2B(g)+3C(g) if the partial pressure of C is doubled then partial pressure of B will be?
Answer» In a closed system A(s)=2B(g)+3C(g) if the partial pressure of C is doubled then partial pressure of B will be?

Discussion

9.	What is Acylic,Alicyclic,Heterocyclic Compounds?
Answer» What is Acylic,Alicyclic,Heterocyclic Compounds?

Discussion

10.	The vapour pressure of an aqueous solution of sugarcane (molecular weight 342) is 756 mm Hg at 100∘C. How many grams of sugar are present per 1000 g of water? Vapour pressure of pure water at 100∘C is 760 mm Hg
Answer» The vapour pressure of an aqueous solution of sugarcane (molecular weight 342) is $756 m m H g at 100^{\circ} C$ . How many grams of sugar are present per $1000 g$ of water? Vapour pressure of pure water at $100^{\circ} C$ is $760 m m H g$

Discussion

11.	When 50 cc of a strong acid neutralizes 50 cc of a strong base, the temperature rises by 5∘C. Calculate the rise in temperature if 250 cc of each liquid having the same concentration are mixed with one another.
Answer» When 50 cc of a strong acid neutralizes 50 cc of a strong base, the temperature rises by $5^{\circ}$ C. Calculate the rise in temperature if 250 cc of each liquid having the same concentration are mixed with one another.

Discussion

12.	We have to learn the molar mass of the element or have to calculate?
Answer» We have to learn the molar mass of the element or have to calculate?

Discussion

13.	Why H-C-H bond angle in CH3F is greater than that in CH3Cl
Answer» Why H-C-H bond angle in CH3F is greater than that in CH3Cl

Discussion

14.	A †an k is filled by liquid of density ρ upto height H. The avg pressure on walls of containe
Answer» A †an k is filled by liquid of density ρ upto height H. The avg pressure on walls of containe

Discussion

15.	Na2CO3.10H2O, when exposed to air, looses water of crystallization and finally gives:
Answer» $N a_{2} C O_{3} .10 H_{2} O$ , when exposed to air, looses water of crystallization and finally gives:

Discussion

16.	In which of the following reactions the hybridisation of carbon of benzene does not change A.C6H6CH3COCl−−−−−−→AlCl3X B.C6H6H2−→NiY C.C6H6Cl2−−−→Lightp D.C6H6O3−−−−−→Zn/H2OQ
Answer» In which of the following reactions the hybridisation of carbon of benzene does not change $A . C_{6} H_{6} C H_{3} C O C l - ----- \to A l C l_{3} X B . C_{6} H_{6} H_{2} - \to N i Y C . C_{6} H_{6} C l_{2} - -- \to L i g h t p D . C_{6} H_{6} O_{3} - ---- \to Z n / H_{2} O Q$

16.

In which of the following reactions the hybridisation of carbon of benzene does not change A.C6H6CH3COCl−−−−−−→AlCl3X B.C6H6H2−→NiY C.C6H6Cl2−−−→Lightp D.C6H6O3−−−−−→Zn/H2OQ

Answer»

In which of the following reactions the hybridisation of carbon of benzene does not change

$A . C_{6} H_{6} C H_{3} C O C l - ----- \to A l C l_{3} X B . C_{6} H_{6} H_{2} - \to N i Y C . C_{6} H_{6} C l_{2} - -- \to L i g h t p D . C_{6} H_{6} O_{3} - ---- \to Z n / H_{2} O Q$

Discussion

17.	For making cake, baking powder is taken. If at home your mother uses baking soda instead of baking powder in cake. How will it affect the taste of the cake and why ? How can baking soda be converted into baking powder ? What is the role of tartaric acid added to baking soda ?
Answer» For making cake, baking powder is taken. If at home your mother uses baking soda instead of baking powder in cake. How will it affect the taste of the cake and why ? How can baking soda be converted into baking powder ? What is the role of tartaric acid added to baking soda ?

Discussion

18.	Question 37 In both water and dimethyl ether (CH3−..O..−CH3), oxygen atom is central atom, and has the same hybridisation, yet they have different bond angles. Which one has greater bond angle? Give reason.
Answer» Question 37 In both water and dimethyl ether $(C H_{3} - . . O . . - C H_{3})$ , oxygen atom is central atom, and has the same hybridisation, yet they have different bond angles. Which one has greater bond angle? Give reason.

18.

Question 37 In both water and dimethyl ether (CH3−..O..−CH3), oxygen atom is central atom, and has the same hybridisation, yet they have different bond angles. Which one has greater bond angle? Give reason.

Answer»

Question 37

In both water and dimethyl ether $(C H_{3} - . . O . . - C H_{3})$ , oxygen atom is central atom, and has the same hybridisation, yet they have different bond angles. Which one has greater bond angle? Give reason.

Discussion

19.	Molecules of an ideal gas are known to have three translational degrees of freedom and two rotational degrees of freedom. The gas is maintained at a temperature of T. The total internal energy, U of a mole of this gas, and the value of γ(CpCv) are given respectively as:
Answer» Molecules of an ideal gas are known to have three translational degrees of freedom and two rotational degrees of freedom. The gas is maintained at a temperature of $T$ . The total internal energy, $U$ of a mole of this gas, and the value of $γ (\frac{C_{p}}{C_{v}})$ are given respectively as:

Discussion

20.	70. How many moles of MgIn_2S_4 can be made from 1g each of Mg,In and S? 1) 6.47\ast10^-4. 2)3\ast10^-1 3) 9.17\ast10^-2. 4)8.7\ast10^-3
Answer» 70. How many moles of MgIn_2S_4 can be made from 1g each of Mg,In and S? 1) 6.47\ast10^-4. 2)3\ast10^-1 3) 9.17\ast10^-2. 4)8.7\ast10^-3

Discussion

21.	The Baeyer's process is used for leaching of
Answer» The Baeyer's process is used for leaching of

Discussion

22.	When a certain amount of ethylene was combusted, 6226 kJ heat was evolved. If heat of combustion of 1 mole of ethylene is 1411 kJ, the volume of O2 (at NTP) that entered into the reaction is:
Answer» When a certain amount of ethylene was combusted, $6226 kJ$ heat was evolved. If heat of combustion of $1$ mole of ethylene is $1411 kJ$ , the volume of $O_{2}$ (at NTP) that entered into the reaction is:

Discussion

23.	Question 14 (ii)Compare the power used in the 2Ω resistor in each of the following circuits:(ii) a 4 V battery in parallel with 12Ω and 2Ω resistors.
Answer» Question 14 (ii) Compare the power used in the $2 Ω$ resistor in each of the following circuits: (ii) a 4 V battery in parallel with $12 Ω$ and $2 Ω$ resistors.

Discussion

24.	180 g of a compound containing C, H and O reacts fully with excess oxygen and produces 264 g of CO2 and 108 g of H2O. If the ratio of molar mass of the compound to the empirical formula mass is 6 then find the molecular formula of given compound.
Answer» $180 g$ of a compound containing $C, H$ and $O$ reacts fully with excess oxygen and produces $264 g$ of $C O_{2}$ and $108 g$ of $H_{2} O$ . If the ratio of molar mass of the compound to the empirical formula mass is $6$ then find the molecular formula of given compound.

Discussion

25.	94.In between CH3COOH and CH3COO- ion ,which one is more resonance stabilised and why?
Answer» 94.In between CH3COOH and CH3COO- ion ,which one is more resonance stabilised and why?

Discussion

26.	Explain hybridisation in N(SiH3)3 with lone pair and bonding electrons in orbitals.
Answer» Explain hybridisation in N(SiH3)3 with lone pair and bonding electrons in orbitals.

Discussion

27.	what is the genotypic ratio for a trihybrid cross
Answer» what is the genotypic ratio for a trihybrid cross

Discussion

28.	If x=t^4 +t^2 Then value of dx/dt
Answer» If x=t^4 +t^2 Then value of dx/dt

Discussion

29.	Metallic nature and basic nature of the oxides ........ as we move along a period
Answer» Metallic nature and basic nature of the oxides ........ as we move along a period

Discussion

30.	Hybridization of phenyl carbocation
Answer» Hybridization of phenyl carbocation

Discussion

31.	What volume of a 0.345 M phosphoric acid solution is required to neutralize 125 mL of a 0.123 M KOH solution?
Answer» What volume of a $0.345 M$ phosphoric acid solution is required to neutralize $125 mL$ of a $0.123 M K O H$ solution?

Discussion

32.	Which of the following alkynes is least acidic?
Answer» Which of the following alkynes is least acidic?

Discussion

33.	Radius of gyration formula
Answer» Radius of gyration formula

Discussion

34.	What is the maximum number of emission lines when the excited electron of a H atom in n = 6 drops to the ground state?
Answer» What is the maximum number of emission lines when the excited electron of a H atom in n = 6 drops to the ground state?

Discussion

35.	Consider an ideal gas confined in an isolated closed chamber. As the gas undergoes adiabatic expansion, the average time of collision between molecules increases as Vq, where V is the volume of the gas. The value of q is(γ=CpCv)
Answer» Consider an ideal gas confined in an isolated closed chamber. As the gas undergoes adiabatic expansion, the average time of collision between molecules increases as $V^{q}$ , where $V$ is the volume of the gas. The value of q is $(γ = \frac{C_{p}}{C_{v}})$

Discussion

36.	{ 10. }2 Why is sulphuric acid not used during the reaction of alcohols with KI? }} 10.3 Write structures of different dihalogen derivatives of propane. }{ 10.4 Among the isomeric alkanes of molecular formula }C_5H_{12} , identify the one that }} on photochemical chlorination yields } (i) A single monochloride. } (ii) Three isomeric monochlorides. } (iii) Four isomeric monochlorides.
Answer» { 10. }2 Why is sulphuric acid not used during the reaction of alcohols with KI? }} 10.3 Write structures of different dihalogen derivatives of propane. }{ 10.4 Among the isomeric alkanes of molecular formula }C_5H_{12} , identify the one that }} on photochemical chlorination yields } (i) A single monochloride. } (ii) Three isomeric monochlorides. } (iii) Four isomeric monochlorides.

Discussion

37.	Which is not an electrophile?
Answer» Which is not an electrophile?

Discussion

38.	Which of the following polymers have vinylic monomer units? (a) Acrilan (b) Polystyrene (c) Nylon (d) Teflon
Answer» Which of the following polymers have vinylic monomer units? (a) Acrilan (b) Polystyrene (c) Nylon (d) Teflon

38.

Which of the following polymers have vinylic monomer units? (a) Acrilan (b) Polystyrene (c) Nylon (d) Teflon

Answer»

Which of the following polymers have vinylic monomer units?

(a) Acrilan

(b) Polystyrene

(c) Nylon

(d) Teflon

Discussion

39.	The least count of three instruments are 1 mm, 0.1 mm and 0.01 mm. Which one has the greater precision?
Answer» The least count of three instruments are 1 mm, 0.1 mm and 0.01 mm. Which one has the greater precision?

Discussion

40.	The difference between heats of Reaction at constant pressure and constant volume for the Reaction 2C6H6 + 15O2 → 12CO2 + 6H2O at 25∘C. in kJ is
Answer» The difference between heats of Reaction at constant pressure and constant volume for the Reaction $2 C_{6} H_{6} + 15 O_{2} \to 12 C O_{2} + 6 H_{2} O$ at $25^{\circ} C$ . in $k J$ is

Discussion

41.	Among the stability of following: The correct order of stability is
Answer» Among the stability of following: The correct order of stability is

41.

Among the stability of following: The correct order of stability is

Answer»

Among the stability of following:

The correct order of stability is

Discussion

42.	When the hybridization state of carbon atom changes from sp3 to sp2 and finally to sp, the angle between the hybridized orbitals:
Answer» When the hybridization state of carbon atom changes from $s p^{3}$ to $s p^{2}$ and finally to $s p$ , the angle between the hybridized orbitals:

Discussion

43.	44. Which is correct 1. NO>N2O (bond length of N-O) 2. N203>N2O5 (acidic strength) 3. N203>N204 (O-N-O bond angle) 4. No2=n205 (O-N-O bond angle)
Answer» 44. Which is correct 1. NO>N2O (bond length of N-O) 2. N203>N2O5 (acidic strength) 3. N203>N204 (O-N-O bond angle) 4. No2=n205 (O-N-O bond angle)

Discussion

44.	what are the number of lobes found in most of the f-orbitals??
Answer» what are the number of lobes found in most of the f-orbitals??

Discussion

45.	Which of the following is the most reactive towards electrophilic substitution reaction ethyl benzene or C6H5C(CH3)
Answer» Which of the following is the most reactive towards electrophilic substitution reaction ethyl benzene or C6H5C(CH3)

Discussion

46.	Why we use noble gas atmosphere in zone refinig process?
Answer» Why we use noble gas atmosphere in zone refinig process?

Discussion

47.	how to measure the length of metal carbonyl
Answer» how to measure the length of metal carbonyl

Discussion

48.	Why proper set of A was taken n - 1 ? What is 1 in it?
Answer» Why proper set of A was taken n - 1 ? What is 1 in it?

Discussion

49.	write reaction when phosphorous is heated with conc. naoh sol
Answer» write reaction when phosphorous is heated with conc. naoh sol

Discussion

50.	{x∈[3,∞)} what values are included ?
Answer» {x∈[3,∞)} what values are included ?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Majority of the reactions of alkynes are the examples of:

Benzoic acid disassociate or associate in benzene solvent? And benzoic acid disassociate or associate in water solvent?

How the vernier scale reading is calculated

(A) α−Amino acid(C3H7NO3)MeOH−−−−→HCl(B)(C4H10NO3Cl)PCl5−−−→(C)(C4H9NO2Cl2) (C)(C4H9NO2Cl2)H3O+−−−→(D)(C3H6NO2Cl)Na−Hg−−−−−→HClAlanine Compound (B) is

which factor is most responsible for the increase i boiling points of noble gases from He to Xe 1.decrese in IE 2.monoatomic nature 3.decrease in polarisibilty 4.increase in polarisibility

benzyl free radical is aromatic because it has __ p orbitals and __ unpaired electrons ?? fill the blanks with suitable number ?

In a closed system A(s)=2B(g)+3C(g) if the partial pressure of C is doubled then partial pressure of B will be?

What is Acylic,Alicyclic,Heterocyclic Compounds?

The vapour pressure of an aqueous solution of sugarcane (molecular weight 342) is 756 mm Hg at 100∘C. How many grams of sugar are present per 1000 g of water? Vapour pressure of pure water at 100∘C is 760 mm Hg

When 50 cc of a strong acid neutralizes 50 cc of a strong base, the temperature rises by 5∘C. Calculate the rise in temperature if 250 cc of each liquid having the same concentration are mixed with one another.

We have to learn the molar mass of the element or have to calculate?

Why H-C-H bond angle in CH3F is greater than that in CH3Cl

A †an k is filled by liquid of density ρ upto height H. The avg pressure on walls of containe

Na2CO3.10H2O, when exposed to air, looses water of crystallization and finally gives:

In which of the following reactions the hybridisation of carbon of benzene does not change A.C6H6CH3COCl−−−−−−→AlCl3X B.C6H6H2−→NiY C.C6H6Cl2−−−→Lightp D.C6H6O3−−−−−→Zn/H2OQ

For making cake, baking powder is taken. If at home your mother uses baking soda instead of baking powder in cake. How will it affect the taste of the cake and why ? How can baking soda be converted into baking powder ? What is the role of tartaric acid added to baking soda ?

Question 37 In both water and dimethyl ether (CH3−..O..−CH3), oxygen atom is central atom, and has the same hybridisation, yet they have different bond angles. Which one has greater bond angle? Give reason.

Molecules of an ideal gas are known to have three translational degrees of freedom and two rotational degrees of freedom. The gas is maintained at a temperature of T. The total internal energy, U of a mole of this gas, and the value of γ(CpCv) are given respectively as:

70. How many moles of MgIn_2S_4 can be made from 1g each of Mg,In and S? 1) 6.47\ast10^-4. 2)3\ast10^-1 3) 9.17\ast10^-2. 4)8.7\ast10^-3

The Baeyer's process is used for leaching of

When a certain amount of ethylene was combusted, 6226 kJ heat was evolved. If heat of combustion of 1 mole of ethylene is 1411 kJ, the volume of O2 (at NTP) that entered into the reaction is:

Question 14 (ii)Compare the power used in the 2Ω resistor in each of the following circuits:(ii) a 4 V battery in parallel with 12Ω and 2Ω resistors.

180 g of a compound containing C, H and O reacts fully with excess oxygen and produces 264 g of CO2 and 108 g of H2O. If the ratio of molar mass of the compound to the empirical formula mass is 6 then find the molecular formula of given compound.

94.In between CH3COOH and CH3COO- ion ,which one is more resonance stabilised and why?

Explain hybridisation in N(SiH3)3 with lone pair and bonding electrons in orbitals.

what is the genotypic ratio for a trihybrid cross

If x=t^4 +t^2 Then value of dx/dt

Metallic nature and basic nature of the oxides ........ as we move along a period

Hybridization of phenyl carbocation

What volume of a 0.345 M phosphoric acid solution is required to neutralize 125 mL of a 0.123 M KOH solution?

Which of the following alkynes is least acidic?

Radius of gyration formula

What is the maximum number of emission lines when the excited electron of a H atom in n = 6 drops to the ground state?

Consider an ideal gas confined in an isolated closed chamber. As the gas undergoes adiabatic expansion, the average time of collision between molecules increases as Vq, where V is the volume of the gas. The value of q is(γ=CpCv)

Which is not an electrophile?

Which of the following polymers have vinylic monomer units? (a) Acrilan (b) Polystyrene (c) Nylon (d) Teflon

The least count of three instruments are 1 mm, 0.1 mm and 0.01 mm. Which one has the greater precision?

The difference between heats of Reaction at constant pressure and constant volume for the Reaction 2C6H6 + 15O2 → 12CO2 + 6H2O at 25∘C. in kJ is

Among the stability of following: The correct order of stability is

When the hybridization state of carbon atom changes from sp3 to sp2 and finally to sp, the angle between the hybridized orbitals:

44. Which is correct 1. NO>N2O (bond length of N-O) 2. N203>N2O5 (acidic strength) 3. N203>N204 (O-N-O bond angle) 4. No2=n205 (O-N-O bond angle)

what are the number of lobes found in most of the f-orbitals??

Which of the following is the most reactive towards electrophilic substitution reaction ethyl benzene or C6H5C(CH3)

Why we use noble gas atmosphere in zone refinig process?

how to measure the length of metal carbonyl

Why proper set of A was taken n - 1 ? What is 1 in it?

write reaction when phosphorous is heated with conc. naoh sol

{x∈[3,∞)} what values are included ?

benzyl free radical is aromatic because it has p orbitals and unpaired electrons ?? fill the blanks with suitable number ?