46295 + Interview Questions in Chemistry

1.	In an air compressor for the suction and delivery pressure of 1 bar and 30 bar and flow rate of 4 m3/min , the minimum work required to run compressor is _____ kW. (Correct to one decimal place}22.67
Answer» In an air compressor for the suction and delivery pressure of 1 bar and 30 bar and flow rate of $4 m^{3} / m i n$ , the minimum work required to run compressor is _____ kW. (Correct to one decimal place} 22.67

Discussion

2.	Question 15Describe an activity to show that thermoplastic is a poor conductor of electricity.
Answer» Question 15 Describe an activity to show that thermoplastic is a poor conductor of electricity.

Discussion

3.	Hydrogenation of vegetable ghee at 250C reduces pressure of H2 from 2 atom to 1.2 atom in 50 minute. The rate of reaction in terms of molarity per second is:
Answer» Hydrogenation of vegetable ghee at 250C reduces pressure of H2 from 2 atom to 1.2 atom in 50 minute. The rate of reaction in terms of molarity per second is:

Discussion

4.	67. How many gram's of cobalt will be deposited when a solution of cobalt chloride is electrolysed with the current of 10 amperes for 109 minute's
Answer» 67. How many gram's of cobalt will be deposited when a solution of cobalt chloride is electrolysed with the current of 10 amperes for 109 minute's

Discussion

5.	If which of the following orders the given complex ions are arranged correctly with respect to their decreasing spin only magnetic moment?(i) [FeF6]3−(ii) [Co(NH3)6]3+(iii) [NiCl4]2−(iv) [Cu(NH3)4]2+
Answer» If which of the following orders the given complex ions are arranged correctly with respect to their decreasing spin only magnetic moment? (i) $[F e F_{6}]^{3 -}$ (ii) $[C o (N H_{3})_{6}]^{3 +}$ (iii) $[N i C l_{4}]^{2 -}$ (iv) $[C u (N H_{3})_{4}]^{2 +}$

Discussion

6.	Pressure inside two soap bubbles are 1.01 atm and 1.02 atm respectively. The ratio of their volume is-
Answer» Pressure inside two soap bubbles are $1.01 atm$ and $1.02 atm$ respectively. The ratio of their volume is-

Discussion

7.	Gold crystallises in ccp structure. The total number of voids present in 197g of gold will be (Au = 197)
Answer» Gold crystallises in ccp structure. The total number of voids present in 197g of gold will be (Au = 197)

Discussion

8.	Which of the following compound(s) will be optically inactive?
Answer» Which of the following compound(s) will be optically inactive?

Discussion

9.	Potassium chloride is:
Answer» Potassium chloride is:

Discussion

10.	a first ordre rection has a rate constant of 2.303 into 10 power minus 3.the time required for 40 g of reactant to reduce to 10 g will be
Answer» a first ordre rection has a rate constant of 2.303 into 10 power minus 3.the time required for 40 g of reactant to reduce to 10 g will be

Discussion

11.	In the reaction, 8Al+3Fe3O4→4Al2O3+9Fe, number of electrons transferred from reductant to oxidant is:
Answer» In the reaction, $8 A l + 3 F e_{3} O_{4} \to 4 A l_{2} O_{3} + 9 F e,$ number of electrons transferred from reductant to oxidant is:

Discussion

12.	In which of the following reaction, the major product alkene is formed by E1cB mechanism?
Answer» In which of the following reaction, the major product alkene is formed by $E_{1} c B$ mechanism?

Discussion

13.	The weight of one molecule of compound glucose is
Answer» The weight of one molecule of compound glucose is

Discussion

14.	Among the following, the number of compounds that can react with PCl5 to give POCl3 is O2,CO2,SO2,H2O,H2SO4,P4O10.___
Answer» Among the following, the number of compounds that can react with $P C l_{5}$ to give $P O C l_{3}$ is $O_{2}, C O_{2}, S O_{2}, H_{2} O, H_{2} S O_{4}, P_{4} O_{10}$ .___

Discussion

15.	10 dm3 of N2 gas and 10 dm3 of gas X at the same temperature contain the same number of molecules and have same mass. The gas X is:
Answer» $10 {dm}^{3}$ of $N_{2}$ gas and $10 {dm}^{3}$ of gas $X$ at the same temperature contain the same number of molecules and have same mass. The gas $X$ is:

Discussion

16.	The bond enthalpy of H2(g) is 436 kJ/mol and that of N2(g) is 941.3 kJ/mol. Calculate the average bond enthalpy of an N−H bond in ammonia.ΔH∘f(NH3)=−46 kJ/mol
Answer» The bond enthalpy of $H_{2} (g)$ is $436 kJ/mol$ and that of $N_{2} (g)$ is $941.3 kJ/mol$ . Calculate the average bond enthalpy of an $N - H$ bond in ammonia. $Δ H_{f}^{\circ} (N H_{3}) = - 46 kJ/mol$

Discussion

17.	For the reaction A+2B arrow C, 5 moles of A and 8 moles of B will produce
Answer» For the reaction A+2B arrow C, 5 moles of A and 8 moles of B will produce

Discussion

18.	A gas for which γ=43, is heated at constant pressure. The percentage of total heat supplied for doing external work is
Answer» A gas for which $γ = \frac{4}{3}$ , is heated at constant pressure. The percentage of total heat supplied for doing external work is

Discussion

19.	Question 23An electrolytic cell consists of:(i) positively charged cathode.(ii) negatively charged anode.(iii) positively charged anode.(iv) negatively charged cathode.(a) (i) and (ii)(b) (iii) and (iv)(c) (i) and (iii)(d) (ii) ad (iv)
Answer» Question 23 An electrolytic cell consists of: (i) positively charged cathode. (ii) negatively charged anode. (iii) positively charged anode. (iv) negatively charged cathode. (a) (i) and (ii) (b) (iii) and (iv) (c) (i) and (iii) (d) (ii) ad (iv)

Discussion

20.	In Ostwald-Walker method, dry air is passed through a solution beaker, then a pure solvent beaker and then, through the dehydrating agent. Which of the following statement(s) is/are correct regarding the above setup? Here,p∘ is the vapour pressure of the pure solventps is the vapour pressure of the solution
Answer» In Ostwald-Walker method, dry air is passed through a solution beaker, then a pure solvent beaker and then, through the dehydrating agent. Which of the following statement(s) is/are correct regarding the above setup? Here, $p^{\circ} is the vapour pressure of the pure solvent$ $p_{s} is the vapour pressure of the solution$

Discussion

21.	Gases X, Y, Z, P and Q have their van der Waals constants ′a′ and ′b′ (in CGS units) as shown below:XYZPQa66200.0530b0.0250.150.10.020.2The gas with the highest critical temperature is:
Answer» Gases $X, Y, Z, P$ and $Q$ have their van der Waals constants $^{'} a^{'}$ and $^{'} b^{'}$ (in CGS units) as shown below: $\begin{matrix} X & Y & Z & P & Q a & 6 & 6 & 20 & 0.05 & 30 b & 0.025 & 0.15 & 0.1 & 0.02 & 0.2 \end{matrix}$ The gas with the highest critical temperature is:

Discussion

22.	what are delta orbitals?
Answer» what are delta orbitals?

Discussion

23.	Mark the correct reactions:
Answer» Mark the correct reactions:

Discussion

24.	let o be origin if a relation r is defined bw 2 pts a and b in a plane oa=ob relation r is
Answer» let o be origin if a relation r is defined bw 2 pts a and b in a plane oa=ob relation r is

Discussion

25.	The ratio of osmotic pressure of 0.1 M aqueous solutions of K2SO4,NaCl i.e. (πK2SO4:πNaCl) is:Assume 100% ionisation, and both the solutions are at same temperature.
Answer» The ratio of osmotic pressure of $0.1 M$ aqueous solutions of $K_{2} S O_{4}, N a C l$ i.e. $(π_{K_{2} S O_{4}} : π_{N a C l})$ is: Assume 100% ionisation, and both the solutions are at same temperature.

Discussion

26.	The energy of a photon whose de-Broglie wavelength is equal to the wavelength of an electron accelerated through a potential difference of 125 V is near to[Use hc=12400 eV˚A]
Answer» The energy of a photon whose de-Broglie wavelength is equal to the wavelength of an electron accelerated through a potential difference of $125 V$ is near to [Use $h c = 12400 eV ˚ A$ ]

Discussion

27.	A liquid is in equilibrium with its vapours at its boiling point. The molecules in the two phases have equal:
Answer» A liquid is in equilibrium with its vapours at its boiling point. The molecules in the two phases have equal:

Discussion

28.	What type of lattice is found in potassium chloride crystal[MP PMT 1996]
Answer» What type of lattice is found in potassium chloride crystal [MP PMT 1996]

28.

What type of lattice is found in potassium chloride crystal[MP PMT 1996]

Answer»

What type of lattice is found in potassium chloride crystal

[MP PMT 1996]

Discussion

29.	(3) 3024. The normality of solution obtained by mixing2SO with 100 ml of 0.2 M100 ml of 0.2 M HNAOH is(1) 0.1(2) 0.2(3) 0.5(4) 0.3anletely ne
Answer» (3) 3024. The normality of solution obtained by mixing2SO with 100 ml of 0.2 M100 ml of 0.2 M HNAOH is(1) 0.1(2) 0.2(3) 0.5(4) 0.3anletely ne

Discussion

30.	What are the common physical and chemical features of alkali metals?
Answer» What are the common physical and chemical features of alkali metals?

Discussion

31.	Which of the following reaction(s) is/ are correct ?
Answer» Which of the following reaction(s) is/ are correct ?

Discussion

32.	the observed dipole moment of hcl is 1.03D bond length is 1.275A then the precentage of ionic character is
Answer» the observed dipole moment of hcl is 1.03D bond length is 1.275A then the precentage of ionic character is

Discussion

33.	Consider the following reactions : NaCl+K2Cr2O7+H2SO4→(A)+side products (A)+NaOH→(B)+side products (B)+H2SO4(dil.)+H2O2→(C)+side products The sum of the total number of atoms in one molecule of (A),(B) & (C) is .
Answer» Consider the following reactions : $N a C l + K_{2} C r_{2} O_{7} + H_{2} S O_{4} \to (A) + side products$ $(A) + N a O H \to (B) + side products$ $(B) + H_{2} S O_{4} (d i l .) + H_{2} O_{2} \to (C) + side products$ The sum of the total number of atoms in one molecule of (A),(B) & (C) is .

Discussion

34.	How do you convert the following?(a) Ethanal to Propanone(b) Toluene to Benzoic acid
Answer» How do you convert the following? (a) Ethanal to Propanone (b) Toluene to Benzoic acid

Discussion

35.	why catalytic activity increases from group 5 to group 11? (explian in detail.)
Answer» why catalytic activity increases from group 5 to group 11? (explian in detail.)

Discussion

36.	17.iupac name of H2 (ptcl6) is
Answer» 17.iupac name of H2 (ptcl6) is

Discussion

37.	In which of the anions of silicates, two oxygen atoms are shared by other units?
Answer» In which of the anions of silicates, two oxygen atoms are shared by other units?

Discussion

38.	At what temperature the average speed of gas molecules will be double that at 27degree celsius
Answer» At what temperature the average speed of gas molecules will be double that at 27degree celsius

Discussion

39.	The element having configuration belongs to ns2(n−1)d1−10(n−2)f1−14
Answer» The element having configuration belongs to $n s^{2} (n - 1) d^{1 - 10} (n - 2) f^{1 - 14}$

Discussion

40.	45 All the given species undergo dimer formation. Find out the number of species for which dimerisation does NOT require vacant orbital. AlCl3, BH3, ClO3,ICl3, NO2, BeCl2. (All numbers are in subscript)
Answer» 45 All the given species undergo dimer formation. Find out the number of species for which dimerisation does NOT require vacant orbital. AlCl3, BH3, ClO3,ICl3, NO2, BeCl2. (All numbers are in subscript)

Discussion

41.	The electronic configuration of the outermost orbit in the case of alkaline earth metal is:
Answer» The electronic configuration of the outermost orbit in the case of alkaline earth metal is:

Discussion

42.	Can hybridised orbital form dative( coordinate) bond??
Answer» Can hybridised orbital form dative( coordinate) bond??

Discussion

43.	How is SO2 an air pollutant?
Answer» How is $S O_{2}$ an air pollutant?

Discussion

44.	A calorimeter contains ice. The energy of 500 calories is required, to heat the system from270 K to 272 K and energy of 16600 calories isrequired to heat that system from 272 K to 274 K.The heat capacity is defined as the product ofmass of the object and its specific heat. The specific heat of ice is 0.5 cal/gram-K. The heat capacity of calorimeter is (1)150 cal/K (2)100 cal/K (3)120 cal/K (4)180 cal/K
Answer» A calorimeter contains ice. The energy of 500 calories is required, to heat the system from270 K to 272 K and energy of 16600 calories isrequired to heat that system from 272 K to 274 K.The heat capacity is defined as the product ofmass of the object and its specific heat. The specific heat of ice is 0.5 cal/gram-K. The heat capacity of calorimeter is (1)150 cal/K (2)100 cal/K (3)120 cal/K (4)180 cal/K

Discussion

45.	{ Two components in the ratio }x: y form an azeotropic }}{ mixture. They are mixed in the ratio of }x:2y, how many }} moles one of the pure component y will be evaporated } before getting azeotropic solution?
Answer» { Two components in the ratio }x: y form an azeotropic }}{ mixture. They are mixed in the ratio of }x:2y, how many }} moles one of the pure component y will be evaporated } before getting azeotropic solution?

Discussion

46.	0.1 M aqueous solution of K4 [Fe(CN)6] will have the same freezing point as 0.1 M aqueous solution of1) Fe(SO4)32) Al2 (SO4)33) AlCl3 4) K3PO4
Answer» 0.1 M aqueous solution of K4 [Fe(CN)6] will have the same freezing point as 0.1 M aqueous solution of 1) Fe(SO4)3 2) Al2 (SO4)3 3) AlCl3 4) K3PO4

Discussion

47.	The hydroxide of which metal ion is soluble in excess of sodium hydroxide solution.
Answer» The hydroxide of which metal ion is soluble in excess of sodium hydroxide solution.

Discussion

48.	Molality of 40% (by mass of solution) urea solution is??
Answer» Molality of 40% (by mass of solution) urea solution is??

Discussion

49.	Ferric oxide crystallises in a hcp of oxide ions with two out of every tree octahedral voids occupied by ferric ions. Derive the formula of ferric oxide.
Answer» Ferric oxide crystallises in a hcp of oxide ions with two out of every tree octahedral voids occupied by ferric ions. Derive the formula of ferric oxide.

Discussion

50.	if pA and pB are 108 and 36 torr respectively what will be the mole fraction of A is vapour phase if B has mole fraction in solution is 0.5 1. 0.25 2. 0.75 3. 0.60 4. 0.3
Answer» if pA and pB are 108 and 36 torr respectively what will be the mole fraction of A is vapour phase if B has mole fraction in solution is 0.5 1. 0.25 2. 0.75 3. 0.60 4. 0.3

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

In an air compressor for the suction and delivery pressure of 1 bar and 30 bar and flow rate of 4 m3/min , the minimum work required to run compressor is _____ kW. (Correct to one decimal place}22.67

Question 15Describe an activity to show that thermoplastic is a poor conductor of electricity.

Hydrogenation of vegetable ghee at 250C reduces pressure of H2 from 2 atom to 1.2 atom in 50 minute. The rate of reaction in terms of molarity per second is:

67. How many gram's of cobalt will be deposited when a solution of cobalt chloride is electrolysed with the current of 10 amperes for 109 minute's

If which of the following orders the given complex ions are arranged correctly with respect to their decreasing spin only magnetic moment?(i) [FeF6]3−(ii) [Co(NH3)6]3+(iii) [NiCl4]2−(iv) [Cu(NH3)4]2+

Pressure inside two soap bubbles are 1.01 atm and 1.02 atm respectively. The ratio of their volume is-

Gold crystallises in ccp structure. The total number of voids present in 197g of gold will be (Au = 197)

Which of the following compound(s) will be optically inactive?

Potassium chloride is:

a first ordre rection has a rate constant of 2.303 into 10 power minus 3.the time required for 40 g of reactant to reduce to 10 g will be

In the reaction, 8Al+3Fe3O4→4Al2O3+9Fe, number of electrons transferred from reductant to oxidant is:

In which of the following reaction, the major product alkene is formed by E1cB mechanism?

The weight of one molecule of compound glucose is

Among the following, the number of compounds that can react with PCl5 to give POCl3 is O2,CO2,SO2,H2O,H2SO4,P4O10.___

10 dm3 of N2 gas and 10 dm3 of gas X at the same temperature contain the same number of molecules and have same mass. The gas X is:

The bond enthalpy of H2(g) is 436 kJ/mol and that of N2(g) is 941.3 kJ/mol. Calculate the average bond enthalpy of an N−H bond in ammonia.ΔH∘f(NH3)=−46 kJ/mol

For the reaction A+2B arrow C, 5 moles of A and 8 moles of B will produce

A gas for which γ=43, is heated at constant pressure. The percentage of total heat supplied for doing external work is

Question 23An electrolytic cell consists of:(i) positively charged cathode.(ii) negatively charged anode.(iii) positively charged anode.(iv) negatively charged cathode.(a) (i) and (ii)(b) (iii) and (iv)(c) (i) and (iii)(d) (ii) ad (iv)

Gases X, Y, Z, P and Q have their van der Waals constants ′a′ and ′b′ (in CGS units) as shown below:XYZPQa66200.0530b0.0250.150.10.020.2The gas with the highest critical temperature is:

what are delta orbitals?

Mark the correct reactions:

let o be origin if a relation r is defined bw 2 pts a and b in a plane oa=ob relation r is

The ratio of osmotic pressure of 0.1 M aqueous solutions of K2SO4,NaCl i.e. (πK2SO4:πNaCl) is:Assume 100% ionisation, and both the solutions are at same temperature.

The energy of a photon whose de-Broglie wavelength is equal to the wavelength of an electron accelerated through a potential difference of 125 V is near to[Use hc=12400 eV˚A]

A liquid is in equilibrium with its vapours at its boiling point. The molecules in the two phases have equal:

What type of lattice is found in potassium chloride crystal[MP PMT 1996]

(3) 3024. The normality of solution obtained by mixing2SO with 100 ml of 0.2 M100 ml of 0.2 M HNAOH is(1) 0.1(2) 0.2(3) 0.5(4) 0.3anletely ne

What are the common physical and chemical features of alkali metals?

Which of the following reaction(s) is/ are correct ?

the observed dipole moment of hcl is 1.03D bond length is 1.275A then the precentage of ionic character is

Consider the following reactions : NaCl+K2Cr2O7+H2SO4→(A)+side products (A)+NaOH→(B)+side products (B)+H2SO4(dil.)+H2O2→(C)+side products The sum of the total number of atoms in one molecule of (A),(B) & (C) is .

How do you convert the following?(a) Ethanal to Propanone(b) Toluene to Benzoic acid

why catalytic activity increases from group 5 to group 11? (explian in detail.)

17.iupac name of H2 (ptcl6) is

In which of the anions of silicates, two oxygen atoms are shared by other units?

At what temperature the average speed of gas molecules will be double that at 27degree celsius

The element having configuration belongs to ns2(n−1)d1−10(n−2)f1−14

45 All the given species undergo dimer formation. Find out the number of species for which dimerisation does NOT require vacant orbital. AlCl3, BH3, ClO3,ICl3, NO2, BeCl2. (All numbers are in subscript)

The electronic configuration of the outermost orbit in the case of alkaline earth metal is:

Can hybridised orbital form dative( coordinate) bond??

How is SO2 an air pollutant?

{ Two components in the ratio }x: y form an azeotropic }}{ mixture. They are mixed in the ratio of }x:2y, how many }} moles one of the pure component y will be evaporated } before getting azeotropic solution?

0.1 M aqueous solution of K4 [Fe(CN)6] will have the same freezing point as 0.1 M aqueous solution of1) Fe(SO4)32) Al2 (SO4)33) AlCl3 4) K3PO4

The hydroxide of which metal ion is soluble in excess of sodium hydroxide solution.

Molality of 40% (by mass of solution) urea solution is??

Ferric oxide crystallises in a hcp of oxide ions with two out of every tree octahedral voids occupied by ferric ions. Derive the formula of ferric oxide.

if pA and pB are 108 and 36 torr respectively what will be the mole fraction of A is vapour phase if B has mole fraction in solution is 0.5 1. 0.25 2. 0.75 3. 0.60 4. 0.3