46295 + Interview Questions in Chemistry

1.	Which indicator is used in fountain experiment and mention the change in colour we observe in this experiment?
Answer» Which indicator is used in fountain experiment and mention the change in colour we observe in this experiment?

Discussion

2.	How many isomers (Including stereo)are possible for molecular formula C4H10O?___
Answer» How many isomers (Including stereo)are possible for molecular formula $C_{4} H_{10} O$ ?___

Discussion

3.	Thermal stability of carbonates of alkaline earth metals follows the order
Answer» Thermal stability of carbonates of alkaline earth metals follows the order

Discussion

4.	In a compound XY2O4 oxide ions are arranged in ccp structure. Cation X are present in octahedral voids and cation Y are equally distributed between octahedral and tetrahedral voids. The fraction of the octahedral voids occupied is:
Answer» In a compound $X Y_{2} O_{4}$ oxide ions are arranged in ccp structure. Cation X are present in octahedral voids and cation Y are equally distributed between octahedral and tetrahedral voids. The fraction of the octahedral voids occupied is:

Discussion

5.	the ionisation enrgy of 10 times ionized sodium atom i
Answer» the ionisation enrgy of 10 times ionized sodium atom i

Discussion

6.	write a brief note on RESONANCE
Answer» write a brief note on RESONANCE

Discussion

7.	For the given reaction, 2A+3B+C→productsOrder of reaction with respect to A, B and C are 3, 1 and 0 respectively. What will be the rate law of the given reaction?
Answer» For the given reaction, $2 A + 3 B + C \to products$ Order of reaction with respect to A, B and C are 3, 1 and 0 respectively. What will be the rate law of the given reaction?

Discussion

8.	The close packing represents ABC ABC...... order of
Answer» The close packing represents ABC ABC...... order of

Discussion

9.	What happens when phenol reacts with acids
Answer» What happens when phenol reacts with acids

Discussion

10.	37. For reaction aA =xP , when [A]= 2.2mM, the rate was found to be 2.4mM/s. On reducing concentration of A to half, the rate changes to 0.6mM/s . The order of reaction with respect to A is
Answer» 37. For reaction aA =xP , when [A]= 2.2mM, the rate was found to be 2.4mM/s. On reducing concentration of A to half, the rate changes to 0.6mM/s . The order of reaction with respect to A is

Discussion

11.	for which of the following electrolytes molar conductivity is three times the equivalent conductivity MgSO4.7H2O,CaCl2, NaCl , KCl.MgCl2.6H2O
Answer» for which of the following electrolytes molar conductivity is three times the equivalent conductivity MgSO4.7H2O,CaCl2, NaCl , KCl.MgCl2.6H2O

Discussion

12.	Which of the following molecular orbital has 2 nodal planes?
Answer» Which of the following molecular orbital has 2 nodal planes?

Discussion

13.	A colourless gas X forms a brown coloured gas when mixed with air. The gas X is:
Answer» A colourless gas X forms a brown coloured gas when mixed with air. The gas X is:

Discussion

14.	1 Balance the equation 1) Fe2O3 + H2SO4 -> Fe (SO4)3 + H2O 2) Fe + H2O -> FeO + H20
Answer» 1 Balance the equation 1) Fe2O3 + H2SO4 -> Fe (SO4)3 + H2O 2) Fe + H2O -> FeO + H20

Discussion

15.	The temperature of an air bubble while rising from bottom to surface of a lake remains constant but its diameter is doubled. If the pressure on the surface is equal to h meter of mercury column and relative density of mercury is ρ , then the depth of the lake in meter, is
Answer» The temperature of an air bubble while rising from bottom to surface of a lake remains constant but its diameter is doubled. If the pressure on the surface is equal to h meter of mercury column and relative density of mercury is $ρ$ , then the depth of the lake in meter, is

Discussion

16.	Which one of the following combines with Fe(II) ions to form a brown complex
Answer» Which one of the following combines with Fe(II) ions to form a brown complex

16.

Which one of the following combines with Fe(II) ions to form a brown complex

Answer»

Which one of the following combines with Fe(II) ions to form a brown complex

Discussion

17.	Differences between markonikov and anti markonikov in alkane?
Answer» Differences between markonikov and anti markonikov in alkane?

Discussion

18.	Which of the following will produce anisole?
Answer» Which of the following will produce anisole?

Discussion

19.	40.Which of the following bonds is the highest in bonded energy? 1.)S-S 2)O-O 3)Se-Se 4)Te-Te
Answer» 40.Which of the following bonds is the highest in bonded energy? 1.)S-S 2)O-O 3)Se-Se 4)Te-Te

Discussion

20.	If tetrachloromethane has zero dipole moment then with same explanation can't we say that hydrogen disulphide is also non polar?
Answer» If tetrachloromethane has zero dipole moment then with same explanation can't we say that hydrogen disulphide is also non polar?

Discussion

21.	Question 18The correct structural formula of butanoic acid is(a)(b)(c)(d)
Answer» Question 18 The correct structural formula of butanoic acid is (a) (b) (c) (d)

Discussion

22.	What would be the concentration of Cl- ions when equal volumes of aqueous solutions of 0.01M NH4Cl and 0.02M Al2(SO4)3 , are mixed ?(1) 0.005(2) 0.01(3) 0.001(4) 0.05
Answer» What would be the concentration of Cl- ions when equal volumes of aqueous solutions of 0.01M NH4Cl and 0.02M Al2(SO4)3 , are mixed ? (1) 0.005 (2) 0.01 (3) 0.001 (4) 0.05

Discussion

23.	Which of the following compounds has the most acidic hydrogen?
Answer» Which of the following compounds has the most acidic hydrogen?

Discussion

24.	10 mole of ideal gas expands isothermally and reversibly from a pressure of 10 atm to 1 atm at 300 K. What is the heavisest mass which can lifted through a height of 100 meter by this gas?
Answer» 10 mole of ideal gas expands isothermally and reversibly from a pressure of 10 atm to 1 atm at 300 K. What is the heavisest mass which can lifted through a height of 100 meter by this gas?

Discussion

25.	Volume of one molecule of oxygen gas at S.T.P. is (1) 3.7 × 10–20 mL (2) 2.5 × 10–21 mL (3) 3.1 × 10–22 mL (4) 6.1 × 10–23 mL
Answer» Volume of one molecule of oxygen gas at S.T.P. is (1) 3.7 × 10–20 mL (2) 2.5 × 10–21 mL (3) 3.1 × 10–22 mL (4) 6.1 × 10–23 mL

Discussion

26.	ow many water molecules are in a 0.10 g sample of CuSO_{4.}5H_2O(MM=249.7)
Answer» ow many water molecules are in a 0.10 g sample of CuSO_{4.}5H_2O(MM=249.7)

Discussion

27.	Consider the given reaction Pcl5-pcl3+cl2If the enthalpy change for the given reaction is -x J at T K then the value of dU is
Answer» Consider the given reaction Pcl5-pcl3+cl2 If the enthalpy change for the given reaction is -x J at T K then the value of dU is

Discussion

28.	A Metal oxide contains 60% metal by mass.the equivalent weight of metal is??
Answer» A Metal oxide contains 60% metal by mass.the equivalent weight of metal is??

Discussion

29.	0. 90gm of the acid ( molecular wt. 90gm) is neutralized by 40 ml of 0. 5 N NaOH. What is the basicity of the acid?
Answer» 0. 90gm of the acid ( molecular wt. 90gm) is neutralized by 40 ml of 0. 5 N NaOH. What is the basicity of the acid?

Discussion

30.	Onerous is most nearly similar in meaning to:
Answer» Onerous is most nearly similar in meaning to:

Discussion

31.	why dry ether is used in corey house reaction?
Answer» why dry ether is used in corey house reaction?

Discussion

32.	Why is there aneed for the process of digestion
Answer» Why is there aneed for the process of digestion

Discussion

33.	Time taken by an electron to complete one revolution in the Bohr orbit of hydrogen atom in terms of its radius r and quantum number n is:
Answer» Time taken by an electron to complete one revolution in the Bohr orbit of hydrogen atom in terms of its radius r and quantum number n is:

Discussion

34.	Carbohydrate is a condensation polymer ofA).Amino AcidB).NucleotidesC).StyreneD).Simple sugars
Answer» Carbohydrate is a condensation polymer of A).Amino Acid B).Nucleotides C).Styrene D).Simple sugars

Discussion

35.	ntIf element with principal quantum number n greater than 4 were not allowed in nature , then the number of possible elements would ben nt(1)60n nt(2)32n nt(3)4n nt(4)64n
Answer» ntIf element with principal quantum number n greater than 4 were not allowed in nature , then the number of possible elements would ben nt(1)60n nt(2)32n nt(3)4n nt(4)64n

Discussion

36.	In the following questions a statement of assertion (A) followed by a statement of reason (R) is given. Choose the correct answer out of the following choices. (a) Assertion and reason both are true, reason is correct explanation of assertion. (b) Assertion and reason both are true but reason is not the correct explanation of assertion. (c) Assertion is true, reason is false. (d) Assertion is false, reason is true. Assertion (A) Complexes of MX6 and MX5L type (X and L are unidentate) do not show geometrical isomerism. Reason (R) Geometrical isomerism is not shown by complexes of coordination number 6.
Answer» In the following questions a statement of assertion (A) followed by a statement of reason (R) is given. Choose the correct answer out of the following choices. (a) Assertion and reason both are true, reason is correct explanation of assertion. (b) Assertion and reason both are true but reason is not the correct explanation of assertion. (c) Assertion is true, reason is false. (d) Assertion is false, reason is true. Assertion (A) Complexes of $M X_{6}$ and $M X_{5} L$ type (X and L are unidentate) do not show geometrical isomerism. Reason (R) Geometrical isomerism is not shown by complexes of coordination number 6.

Discussion

37.	Which of the following amine will not react with nitrous acid to give nitrogen
Answer» Which of the following amine will not react with nitrous acid to give nitrogen

Discussion

38.	Electrons are emitted when a photosensitive surface illuminated by green light but electron emission does not take place by yellow light will the electrons be emitted when the surface is illuminated by a) red light b) blue light?
Answer» Electrons are emitted when a photosensitive surface illuminated by green light but electron emission does not take place by yellow light will the electrons be emitted when the surface is illuminated by a) red light b) blue light?

Discussion

39.	Explain the physical significance of Van der Waals parameters.
Answer» Explain the physical significance of Van der Waals parameters.

Discussion

40.	A student forgot to add the reaction mixture to the round bottomed flask at 27∘C but instead he/she placed the flask on the flame. After a lapse of time, he realized his mistake, and using a pyrometer he found the temperature of the flask was 477∘C. What fraction of air would have been expelled out?
Answer» A student forgot to add the reaction mixture to the round bottomed flask at $27^{\circ} C$ but instead he/she placed the flask on the flame. After a lapse of time, he realized his mistake, and using a pyrometer he found the temperature of the flask was $477^{\circ} C$ . What fraction of air would have been expelled out?

Discussion

41.	Chemical ‘A’ is used for water softening to remove temporary hardness. ‘A’ reacts with sodium carbonate to generate caustic soda. When carbon dioxide is bubbled through ‘A’, it turns cloudy. What is the chemical formula of ‘A’ ?
Answer» Chemical ‘A’ is used for water softening to remove temporary hardness. ‘A’ reacts with sodium carbonate to generate caustic soda. When carbon dioxide is bubbled through ‘A’, it turns cloudy. What is the chemical formula of ‘A’ ?

Discussion

42.	Why is silk obtained by mulberry silk moth most popular?
Answer» Why is silk obtained by mulberry silk moth most popular?

Discussion

43.	The basis of C-14 dating method is that the:
Answer» The basis of C-14 dating method is that the:

Discussion

44.	Pay load is defined as the difference between the mass of displaced air and the mass of the balloon. Calculate the pay load when a balloon of radius 10 m, mass 100 kg is filled with helium at 1.66 bar at 27∘C. (Density of air = 1.2kgm−3andR=0.083 bar dm3K−1mol−1).
Answer» Pay load is defined as the difference between the mass of displaced air and the mass of the balloon. Calculate the pay load when a balloon of radius 10 m, mass 100 kg is filled with helium at 1.66 bar at $27^{\circ} C$ . (Density of air = $1.2 k g m^{- 3} a n d R = 0.083 b a r d m^{3} K^{- 1} m o l^{- 1}$ ).

Discussion

45.	Pentose sugar + nitrogen base=nucleoside nucleoside+phosphate=nucleotide nucleotide + nucleo---??? = nucleic acid the last line's nucleo--- is not complete. what is the correct word?
Answer» Pentose sugar + nitrogen base=nucleoside nucleoside+phosphate=nucleotide nucleotide + nucleo---??? = nucleic acid the last line's nucleo--- is not complete. what is the correct word?

Discussion

46.	A mixture of H2SO4 and H2C2O4 (oxalic acid) and some inert impurity weighing 3.185 g was dissolved in water and the solution made up to 1 litre, 10 mL of this solution required 3 mL of 0.1 N NaOH for complete neutralization. In another expriment 100 mL of the same solution in hot condition required 4 mL of 0.02 M KMnO4 solution for complete reaction. The weight % of H2SO4 in the mixture was:
Answer» A mixture of $H_{2} S O_{4}$ and $H_{2} C_{2} O_{4}$ (oxalic acid) and some inert impurity weighing $3.185 g$ was dissolved in water and the solution made up to $1 l i t r e$ , $10 m L$ of this solution required $3 m L$ of $0.1 N N a O H$ for complete neutralization. In another expriment $100 m L$ of the same solution in hot condition required $4 m L$ of $0.02 M K M n O_{4}$ solution for complete reaction. The weight % of $H_{2} S O_{4}$ in the mixture was:

Discussion

47.	A straight chain hydrocarbon has the molecular formula C8H10. The hybridisation for the carbon atoms from one end of the chain to the other are respectively sp3,sp2,sp2,sp3,sp2,sp2,sp and sp. The structural formula of the hydrocarbon would be
Answer» A straight chain hydrocarbon has the molecular formula C8H10. The hybridisation for the carbon atoms from one end of the chain to the other are respectively $s p^{3}, s p^{2}, s p^{2}, s p^{3}, s p^{2}, s p^{2}, s p$ and $s p$ . The structural formula of the hydrocarbon would be

47.

A straight chain hydrocarbon has the molecular formula C8H10. The hybridisation for the carbon atoms from one end of the chain to the other are respectively sp3,sp2,sp2,sp3,sp2,sp2,sp and sp. The structural formula of the hydrocarbon would be

Answer»

A straight chain hydrocarbon has the molecular formula C8H10. The hybridisation for the carbon atoms from one end of the chain to the other are respectively $s p^{3}, s p^{2}, s p^{2}, s p^{3}, s p^{2}, s p^{2}, s p$ and $s p$ . The structural formula of the hydrocarbon would be

Discussion

48.	Free body diagram briefly
Answer» Free body diagram briefly

Discussion

49.	Which one of the following electrolytes is used in Down's process of extracting sodium metal?
Answer» Which one of the following electrolytes is used in Down's process of extracting sodium metal?

Discussion

50.	A certain sample of cuprous is found to habeeb composition Cu1. 8 S, because incorporation of Cu2+ Ions in the lattice. What is the mole % of Cu2+ in total Cooper content in this crystal?
Answer» A certain sample of cuprous is found to habeeb composition Cu1. 8 S, because incorporation of Cu2+ Ions in the lattice. What is the mole % of Cu2+ in total Cooper content in this crystal?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Which indicator is used in fountain experiment and mention the change in colour we observe in this experiment?

How many isomers (Including stereo)are possible for molecular formula C4H10O?___

Thermal stability of carbonates of alkaline earth metals follows the order

In a compound XY2O4 oxide ions are arranged in ccp structure. Cation X are present in octahedral voids and cation Y are equally distributed between octahedral and tetrahedral voids. The fraction of the octahedral voids occupied is:

the ionisation enrgy of 10 times ionized sodium atom i

write a brief note on RESONANCE

For the given reaction, 2A+3B+C→productsOrder of reaction with respect to A, B and C are 3, 1 and 0 respectively. What will be the rate law of the given reaction?

The close packing represents ABC ABC...... order of

What happens when phenol reacts with acids

37. For reaction aA =xP , when [A]= 2.2mM, the rate was found to be 2.4mM/s. On reducing concentration of A to half, the rate changes to 0.6mM/s . The order of reaction with respect to A is

for which of the following electrolytes molar conductivity is three times the equivalent conductivity MgSO4.7H2O,CaCl2, NaCl , KCl.MgCl2.6H2O

Which of the following molecular orbital has 2 nodal planes?

A colourless gas X forms a brown coloured gas when mixed with air. The gas X is:

1 Balance the equation 1) Fe2O3 + H2SO4 -> Fe (SO4)3 + H2O 2) Fe + H2O -> FeO + H20

The temperature of an air bubble while rising from bottom to surface of a lake remains constant but its diameter is doubled. If the pressure on the surface is equal to h meter of mercury column and relative density of mercury is ρ , then the depth of the lake in meter, is

Which one of the following combines with Fe(II) ions to form a brown complex

Differences between markonikov and anti markonikov in alkane?

Which of the following will produce anisole?

40.Which of the following bonds is the highest in bonded energy? 1.)S-S 2)O-O 3)Se-Se 4)Te-Te

If tetrachloromethane has zero dipole moment then with same explanation can't we say that hydrogen disulphide is also non polar?

Question 18The correct structural formula of butanoic acid is(a)(b)(c)(d)

What would be the concentration of Cl- ions when equal volumes of aqueous solutions of 0.01M NH4Cl and 0.02M Al2(SO4)3 , are mixed ?(1) 0.005(2) 0.01(3) 0.001(4) 0.05

Which of the following compounds has the most acidic hydrogen?

10 mole of ideal gas expands isothermally and reversibly from a pressure of 10 atm to 1 atm at 300 K. What is the heavisest mass which can lifted through a height of 100 meter by this gas?

Volume of one molecule of oxygen gas at S.T.P. is (1) 3.7 × 10–20 mL (2) 2.5 × 10–21 mL (3) 3.1 × 10–22 mL (4) 6.1 × 10–23 mL

ow many water molecules are in a 0.10 g sample of CuSO_{4.}5H_2O(MM=249.7)

Consider the given reaction Pcl5-pcl3+cl2If the enthalpy change for the given reaction is -x J at T K then the value of dU is

A Metal oxide contains 60% metal by mass.the equivalent weight of metal is??

0. 90gm of the acid ( molecular wt. 90gm) is neutralized by 40 ml of 0. 5 N NaOH. What is the basicity of the acid?

Onerous is most nearly similar in meaning to:

why dry ether is used in corey house reaction?

Why is there aneed for the process of digestion

Time taken by an electron to complete one revolution in the Bohr orbit of hydrogen atom in terms of its radius r and quantum number n is:

Carbohydrate is a condensation polymer ofA).Amino AcidB).NucleotidesC).StyreneD).Simple sugars

ntIf element with principal quantum number n greater than 4 were not allowed in nature , then the number of possible elements would ben nt(1)60n nt(2)32n nt(3)4n nt(4)64n

Which of the following amine will not react with nitrous acid to give nitrogen

Electrons are emitted when a photosensitive surface illuminated by green light but electron emission does not take place by yellow light will the electrons be emitted when the surface is illuminated by a) red light b) blue light?

Explain the physical significance of Van der Waals parameters.

Chemical ‘A’ is used for water softening to remove temporary hardness. ‘A’ reacts with sodium carbonate to generate caustic soda. When carbon dioxide is bubbled through ‘A’, it turns cloudy. What is the chemical formula of ‘A’ ?

Why is silk obtained by mulberry silk moth most popular?

The basis of C-14 dating method is that the:

Pay load is defined as the difference between the mass of displaced air and the mass of the balloon. Calculate the pay load when a balloon of radius 10 m, mass 100 kg is filled with helium at 1.66 bar at 27∘C. (Density of air = 1.2kgm−3andR=0.083 bar dm3K−1mol−1).

Pentose sugar + nitrogen base=nucleoside nucleoside+phosphate=nucleotide nucleotide + nucleo---??? = nucleic acid the last line's nucleo--- is not complete. what is the correct word?

A straight chain hydrocarbon has the molecular formula C8H10. The hybridisation for the carbon atoms from one end of the chain to the other are respectively sp3,sp2,sp2,sp3,sp2,sp2,sp and sp. The structural formula of the hydrocarbon would be

Free body diagram briefly

Which one of the following electrolytes is used in Down's process of extracting sodium metal?

A certain sample of cuprous is found to habeeb composition Cu1. 8 S, because incorporation of Cu2+ Ions in the lattice. What is the mole % of Cu2+ in total Cooper content in this crystal?