46295 + Interview Questions in Chemistry

1.	Choose the correct statement regarding the “pressure exerted by the fluid.”PA: Pressure exerted by the fluid on plate APB: Pressure exerted by the fluid on plate BPC: Pressure exerted by the fluid on plate CPW: Pressure exerted by the fluid on the walls of the container
Answer» Choose the correct statement regarding the “pressure exerted by the fluid.” $P_{A}$ : Pressure exerted by the fluid on plate A $P_{B}$ : Pressure exerted by the fluid on plate B $P_{C}$ : Pressure exerted by the fluid on plate C $P_{W}$ : Pressure exerted by the fluid on the walls of the container

Discussion

2.	The increasing order of the e/m ratio for protons, neutrons,electrons and alpha particles is?
Answer» The increasing order of the e/m ratio for protons, neutrons,electrons and alpha particles is?

Discussion

3.	How many mmol of sucrose should be dissolved in 500 gms of water so as to get a difference of 103.57° between boiling an freezing point?
Answer» How many mmol of sucrose should be dissolved in 500 gms of water so as to get a difference of 103.57° between boiling an freezing point?

Discussion

4.	What are strong and weak acids?
Answer» What are strong and weak acids?

Discussion

5.	if the radius of bohrs orbit for second excited state of li2+ ion is x angstrom the , radius (in angstrom) then radius of be3+ on in its ground state will be
Answer» if the radius of bohrs orbit for second excited state of li2+ ion is x angstrom the , radius (in angstrom) then radius of be3+ on in its ground state will be

Discussion

6.	HELP amount of heat produced when 100ml 1M naoh is mixed with 100ml 0.5M h2so4 is
Answer» HELP amount of heat produced when 100ml 1M naoh is mixed with 100ml 0.5M h2so4 is

Discussion

7.	1- find n-factor for saltsEna2co3
Answer» 1- find n-factor for salts Ena2co3

Discussion

8.	When KMnO4 reacts with KBr inalkaline medium gives bromate ion , then oxidation state of Mn changes from +7 to - a)+6 b) +4 c) +3 d) +2
Answer» When KMnO4 reacts with KBr inalkaline medium gives bromate ion , then oxidation state of Mn changes from +7 to - a)+6 b) +4 c) +3 d) +2

Discussion

9.	The main product of the following reaction is C6H5CH2CH(OH)CH(CH3)2conc.H2SO4⟶ ?
Answer» The main product of the following reaction is $C_{6} H_{5} C H_{2} C H (O H) C H (C H_{3})_{2} c o n c . H_{2} S O_{4} ⟶ ?$

Discussion

10.	An electron of a stationary hydrogen atom passes from the fifth energy level to the ground level. The velocity that the atom acquires as a result of photon emission will be (h is the plank's constant, R is Rydberg constant and m is the mass of atom )
Answer» An electron of a stationary hydrogen atom passes from the fifth energy level to the ground level. The velocity that the atom acquires as a result of photon emission will be ( $h$ is the plank's constant, $R$ is Rydberg constant and $m$ is the mass of atom )

Discussion

11.	15. 4.8g of C(diamond) on complete combination evolves 1584 kJ of heat. The standard heat of formation gaseous carbon is 725kJ/mole. The energy required for the process (1)C(graphite)---->C(gas) (2)C(diamond)--->C(gas) are (A)725, 727 (B)727, 725 (C)725, 723 (D)none of these
Answer» 15. 4.8g of C(diamond) on complete combination evolves 1584 kJ of heat. The standard heat of formation gaseous carbon is 725kJ/mole. The energy required for the process (1)C(graphite)---->C(gas) (2)C(diamond)--->C(gas) are (A)725, 727 (B)727, 725 (C)725, 723 (D)none of these

Discussion

12.	15. How to identify true peroxide? In given compound which is true peroxide? BaO2, MnO2, PbO2, NO2.
Answer» 15. How to identify true peroxide? In given compound which is true peroxide? BaO2, MnO2, PbO2, NO2.

Discussion

13.	A photosensitive metallic surface is illuminated alternately with lights of wavelength 3100 ang and 6200 ang it is observed that maximum speeds of the photoelectrons in two cases are in the ratio 2:1 the work of metal is
Answer» A photosensitive metallic surface is illuminated alternately with lights of wavelength 3100 ang and 6200 ang it is observed that maximum speeds of the photoelectrons in two cases are in the ratio 2:1 the work of metal is

Discussion

14.	State the law of radioactive decay. Arrive at the expression for the number of radioactive atoms in a sample at an instant.
Answer» State the law of radioactive decay. Arrive at the expression for the number of radioactive atoms in a sample at an instant.

Discussion

15.	A cylinder contains 100 g of an ideal gas ( mol weight is 40g/ mol) at 27^° C and 2 atm pressure. In tranference process, the cylinder fell and a dent was created i.e. there was a decrease in the volume of cylinder. But valve attached to the cylinder cannot keep the presssure greater than 2 atm so 10 g of gas is leaked out.Calculate volume of the cylinder before dent in dm3
Answer» A cylinder contains 100 g of an ideal gas ( mol weight is 40g/ mol) at 27^° C and 2 atm pressure. In tranference process, the cylinder fell and a dent was created i.e. there was a decrease in the volume of cylinder. But valve attached to the cylinder cannot keep the presssure greater than 2 atm so 10 g of gas is leaked out.Calculate volume of the cylinder before dent in dm3

Discussion

16.	In a compound, atoms of element Y form cup lattice and those of element X occupy 2/3rd of tetrahedral voids.The formula of the compound will be:
Answer» In a compound, atoms of element Y form cup lattice and those of element X occupy 2/3rd of tetrahedral voids.The formula of the compound will be:

Discussion

17.	Which of the following is the chemical symbol for iron?
Answer» Which of the following is the chemical symbol for iron?

Discussion

18.	In pH determination when concentration of acid or base is 10^-6 we had to count autoprotolysis of water?Also find pH in 10^-11 M Ca(OH) 2
Answer» In pH determination when concentration of acid or base is 10^-6 we had to count autoprotolysis of water? Also find pH in 10^-11 M Ca(OH) 2

Discussion

19.	A solution containing ethyl alcohol and propyl alcohol has a vapour pressure of 290 mm Hg at 30∘C. Find the vapour pressure of pure ethyl alcohol if its mole fraction in the solution is 0.65. The vapour pressure of propyl alcohol is 210 mm Hg at the same temperature.
Answer» A solution containing ethyl alcohol and propyl alcohol has a vapour pressure of $290 m m H g$ at $30^{\circ} C$ . Find the vapour pressure of pure ethyl alcohol if its mole fraction in the solution is 0.65. The vapour pressure of propyl alcohol is $210 m m H g$ at the same temperature.

Discussion

20.	8.What is non-stoichiometric hydrides.Do expect this type of hydrides to be formed by alkali metals?
Answer» 8.What is non-stoichiometric hydrides.Do expect this type of hydrides to be formed by alkali metals?

Discussion

21.	Which of the following is correct statement?(1) Low density polyethylene is obtained under high pressure and room temperature(2) High density polyethylene has highly branched structure(3) High density polyethylene is obtained at atmospheric pressure(4) High density polyethylene is more flexible than low density polyethylene
Answer» Which of the following is correct statement? (1) Low density polyethylene is obtained under high pressure and room temperature (2) High density polyethylene has highly branched structure (3) High density polyethylene is obtained at atmospheric pressure (4) High density polyethylene is more flexible than low density polyethylene

Discussion

22.	Two persond a and b of weight 60 kg wt and 40 kg wt respectively stand facing each other and pull on a light rope stretched between them. Find the ratio of distance covered by them when they meet if their initial separation was 5m
Answer» Two persond a and b of weight 60 kg wt and 40 kg wt respectively stand facing each other and pull on a light rope stretched between them. Find the ratio of distance covered by them when they meet if their initial separation was 5m

Discussion

23.	The crystal lattice of CoO would be expected to be most likely which of the followling crystal? (Radii Co+2= 0.072 mm,O-2= 0.140nm ) (A) NaCl (B) ZnS (C) CsCl (D) CaF2
Answer» The crystal lattice of CoO would be expected to be most likely which of the followling crystal? (Radii Co+2= 0.072 mm,O-2= 0.140nm ) (A) NaCl (B) ZnS (C) CsCl (D) CaF2

Discussion

24.	26. Find the set of solution \|x+x\|=x+x
Answer» 26. Find the set of solution \|x+x\|=x+x

Discussion

25.	How to find bond length ?
Answer» How to find bond length ?

Discussion

26.	A sample of HI_{(g)} is placed in flask at a pressure of 0.2 atm. At equilibrium the partial pressure of HI_{(g)} is 0.04 atm. What is K_p for the given equilibrium? 2HI(g)↔H2(g)+I2(g)
Answer» A sample of HI_{(g)} is placed in flask at a pressure of 0.2 atm. At equilibrium the partial pressure of HI_{(g)} is 0.04 atm. What is K_p for the given equilibrium? $2 H I (g) \leftrightarrow H_{2} (g) + I_{2} (g)$

Discussion

27.	8. 8cc of gaseous hydrocarbon requires 40cc of O2 for complete combustion . Identify hydrocarbon.
Answer» 8. 8cc of gaseous hydrocarbon requires 40cc of O2 for complete combustion . Identify hydrocarbon.

Discussion

28.	Why the distance travelled by light in a glass slab is the thickness of the glass slab? Why distance travelled is not its lenght?
Answer» Why the distance travelled by light in a glass slab is the thickness of the glass slab? Why distance travelled is not its lenght?

Discussion

29.	The mass of an electron is 9.1 × 10–31 kg. If its K.E. is 3.0 × 10–25 J, calculate its wavelength.
Answer» The mass of an electron is 9.1 × $10^{- 31}$ kg. If its K.E. is 3.0 × $10^{- 25}$ J, calculate its wavelength.

Discussion

30.	For two ionic solids, CaO and KI. Identity the wrong statements among the following
Answer» For two ionic solids, CaO and KI. Identity the wrong statements among the following

Discussion

31.	triple point of water ?
Answer» triple point of water ?

Discussion

32.	How many grams of KCI must be added to75.0 grams of water to produce a solution that is2.25 molal (m)? \lbrack Molecular weight of KCI 74.5\rbrack
Answer» How many grams of KCI must be added to75.0 grams of water to produce a solution that is2.25 molal (m)? \lbrack Molecular weight of KCI 74.5\rbrack

Discussion

33.	what is difference b/w packing, crystal lattice and unit cell
Answer» what is difference b/w packing, crystal lattice and unit cell

Discussion

34.	What is Merck's method?
Answer» What is Merck's method?

Discussion

35.	15. for the reaction 1) A------>P.(K1) 2)B------>Q (K2) following observation is made as shown in figure what will be the value of K1/K2 where K1 and K2 are the rate constants for the respective rxn?
Answer» 15. for the reaction 1) A------>P.(K1) 2)B------>Q (K2) following observation is made as shown in figure what will be the value of K1/K2 where K1 and K2 are the rate constants for the respective rxn?

Discussion

36.	68 Which product is formed when But-2-yne is treated with Na & liquid NH3 ?
Answer» 68 Which product is formed when But-2-yne is treated with Na & liquid NH3 ?

Discussion

37.	Write down the electronic configuration of: (i) Cr3++ (iii) Cu+ (v) Co2+ (vii) Mn2+ (ii) Pm3+ (iv) Ce4+ (vi) Lu2+ (viii) Th4+
Answer» Write down the electronic configuration of: (i) Cr³⁺+ (iii) Cu⁺ (v) Co²+ (vii) Mn²⁺ (ii) Pm³⁺ (iv) Ce⁴⁺ (vi) Lu²⁺ (viii) Th⁴⁺

37.

Write down the electronic configuration of: (i) Cr3++ (iii) Cu+ (v) Co2+ (vii) Mn2+ (ii) Pm3+ (iv) Ce4+ (vi) Lu2+ (viii) Th4+

Answer»

Write down
the electronic configuration of:

(i) Cr³⁺+
(iii) Cu⁺
(v) Co²+ (vii) Mn²⁺

(ii) Pm³⁺
(iv) Ce⁴⁺
(vi) Lu²⁺
(viii) Th⁴⁺

Discussion

38.	The oxidation state of the Os metal atom in Os(CO)5is______
Answer» The oxidation state of the $O s$ metal atom in $O s (C O)_{5} is$ ______

Discussion

39.	200 Why is the mass of a hydrogen atom less than the sum total of of the masses of its subatomic particles?
Answer» 200 Why is the mass of a hydrogen atom less than the sum total of of the masses of its subatomic particles?

Discussion

40.	what is the major product when cyclopentene reacts with chlorine in prence of wate
Answer» what is the major product when cyclopentene reacts with chlorine in prence of wate

Discussion

41.	Which of the following show strongest -I effect a)+N(CH3)3 b) +NH3 c) +S(CH3)3 d) F
Answer» Which of the following show strongest -I effect a)^{+N(CH₃)₃ b)} ^{+NH₃ c)}^{+S(CH₃)₃ d) F}

Discussion

42.	The probability density curve for 2s electron appears like
Answer» The probability density curve for 2s electron appears like

Discussion

43.	List-I contains chiral molecules and List-II contains number of stereisomers. Which of the following has the correct combination considering List-I and List-II?
Answer» List-I contains chiral molecules and List-II contains number of stereisomers. Which of the following has the correct combination considering List-I and List-II?

Discussion

44.	what are pions and meons?
Answer» what are pions and meons?

Discussion

45.	Why is angle between two bonds in tetrahedral model 109°28'?
Answer» Why is angle between two bonds in tetrahedral model 109°28'?

Discussion

46.	47. number of lone pairs present on central atom of ph4 is
Answer» 47. number of lone pairs present on central atom of ph4 is

Discussion

47.	Explain hybridisation of K2MnO4 by drawing structure as well as formula
Answer» Explain hybridisation of $K_{2} M n O_{4}$ by drawing structure as well as formula

Discussion

48.	Calculate the number of atoms in a cubic based lattice with one atom at each corner and two atoms on each diagonal
Answer» Calculate the number of atoms in a cubic based lattice with one atom at each corner and two atoms on each diagonal

Discussion

49.	A thermodynamical system is changed from state (P1,V1) to (P2,V2) by two different processes. The quantity which will remain same will be:
Answer» A thermodynamical system is changed from state $(P_{1}, V_{1})$ to $(P_{2}, V_{2})$ by two different processes. The quantity which will remain same will be:

Discussion

50.	What is the hybridization state of C in C3O2?
Answer» What is the hybridization state of C in C3O2?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Choose the correct statement regarding the “pressure exerted by the fluid.”PA: Pressure exerted by the fluid on plate APB: Pressure exerted by the fluid on plate BPC: Pressure exerted by the fluid on plate C​​​​​​​PW: Pressure exerted by the fluid on the walls of the container

The increasing order of the e/m ratio for protons, neutrons,electrons and alpha particles is?

How many mmol of sucrose should be dissolved in 500 gms of water so as to get a difference of 103.57° between boiling an freezing point?

What are strong and weak acids?

if the radius of bohrs orbit for second excited state of li2+ ion is x angstrom the , radius (in angstrom) then radius of be3+ on in its ground state will be

HELP amount of heat produced when 100ml 1M naoh is mixed with 100ml 0.5M h2so4 is

1- find n-factor for saltsEna2co3

When KMnO4 reacts with KBr inalkaline medium gives bromate ion , then oxidation state of Mn changes from +7 to - a)+6 b) +4 c) +3 d) +2

The main product of the following reaction is C6H5CH2CH(OH)CH(CH3)2conc.H2SO4⟶ ?

An electron of a stationary hydrogen atom passes from the fifth energy level to the ground level. The velocity that the atom acquires as a result of photon emission will be (h is the plank's constant, R is Rydberg constant and m is the mass of atom )

15. 4.8g of C(diamond) on complete combination evolves 1584 kJ of heat. The standard heat of formation gaseous carbon is 725kJ/mole. The energy required for the process (1)C(graphite)---->C(gas) (2)C(diamond)--->C(gas) are (A)725, 727 (B)727, 725 (C)725, 723 (D)none of these

15. How to identify true peroxide? In given compound which is true peroxide? BaO2, MnO2, PbO2, NO2.

A photosensitive metallic surface is illuminated alternately with lights of wavelength 3100 ang and 6200 ang it is observed that maximum speeds of the photoelectrons in two cases are in the ratio 2:1 the work of metal is

State the law of radioactive decay. Arrive at the expression for the number of radioactive atoms in a sample at an instant.

In a compound, atoms of element Y form cup lattice and those of element X occupy 2/3rd of tetrahedral voids.The formula of the compound will be:

Which of the following is the chemical symbol for iron?

In pH determination when concentration of acid or base is 10^-6 we had to count autoprotolysis of water?Also find pH in 10^-11 M Ca(OH) 2

A solution containing ethyl alcohol and propyl alcohol has a vapour pressure of 290 mm Hg at 30∘C. Find the vapour pressure of pure ethyl alcohol if its mole fraction in the solution is 0.65. The vapour pressure of propyl alcohol is 210 mm Hg at the same temperature.

8.What is non-stoichiometric hydrides.Do expect this type of hydrides to be formed by alkali metals?

Two persond a and b of weight 60 kg wt and 40 kg wt respectively stand facing each other and pull on a light rope stretched between them. Find the ratio of distance covered by them when they meet if their initial separation was 5m

The crystal lattice of CoO would be expected to be most likely which of the followling crystal? (Radii Co+2= 0.072 mm,O-2= 0.140nm ) (A) NaCl (B) ZnS (C) CsCl (D) CaF2

26. Find the set of solution |x+x|=x+x

How to find bond length ?

A sample of HI_{(g)} is placed in flask at a pressure of 0.2 atm. At equilibrium the partial pressure of HI_{(g)} is 0.04 atm. What is K_p for the given equilibrium? 2HI(g)↔H2(g)+I2(g)

8. 8cc of gaseous hydrocarbon requires 40cc of O2 for complete combustion . Identify hydrocarbon.

Why the distance travelled by light in a glass slab is the thickness of the glass slab? Why distance travelled is not its lenght?

The mass of an electron is 9.1 × 10–31 kg. If its K.E. is 3.0 × 10–25 J, calculate its wavelength.

For two ionic solids, CaO and KI. Identity the wrong statements among the following

triple point of water ?

How many grams of KCI must be added to75.0 grams of water to produce a solution that is2.25 molal (m)? \lbrack Molecular weight of KCI 74.5\rbrack

what is difference b/w packing, crystal lattice and unit cell

What is Merck's method?

15. for the reaction 1) A------>P.(K1) 2)B------>Q (K2) following observation is made as shown in figure what will be the value of K1/K2 where K1 and K2 are the rate constants for the respective rxn?

68 Which product is formed when But-2-yne is treated with Na & liquid NH3 ?

Write down the electronic configuration of: (i) Cr3++ (iii) Cu+ (v) Co2+ (vii) Mn2+ (ii) Pm3+ (iv) Ce4+ (vi) Lu2+ (viii) Th4+

The oxidation state of the Os metal atom in Os(CO)5is______

200 Why is the mass of a hydrogen atom less than the sum total of of the masses of its subatomic particles?

what is the major product when cyclopentene reacts with chlorine in prence of wate

Which of the following show strongest -I effect a)+N(CH​​​​​3)3 b) +NH​​​​​3 c) +S(CH​​​​​3)3 d) F

The probability density curve for 2s electron appears like

List-I contains chiral molecules and List-II contains number of stereisomers. Which of the following has the correct combination considering List-I and List-II?

what are pions and meons?

Why is angle between two bonds in tetrahedral model 109°28'?

47. number of lone pairs present on central atom of ph4 is

Explain hybridisation of K2MnO4 by drawing structure as well as formula

Calculate the number of atoms in a cubic based lattice with one atom at each corner and two atoms on each diagonal

A thermodynamical system is changed from state (P1,V1) to (P2,V2) by two different processes. The quantity which will remain same will be:

What is the hybridization state of C in C3O2?

Choose the correct statement regarding the “pressure exerted by the fluid.”PA: Pressure exerted by the fluid on plate APB: Pressure exerted by the fluid on plate BPC: Pressure exerted by the fluid on plate CPW: Pressure exerted by the fluid on the walls of the container

Which of the following show strongest -I effect a)+N(CH3)3 b) +NH3 c) +S(CH3)3 d) F