46295 + Interview Questions in Chemistry

1.	GIVE REASON SUCROSE IS A COVALENT COMPOUND BUT IT S QUITE SOLUBLE IN WATER?
Answer» GIVE REASON SUCROSE IS A COVALENT COMPOUND BUT IT S QUITE SOLUBLE IN WATER?

Discussion

2.	34. Two oxides of metal contains 50% and 40% of metal respectively. The formula of the first oxide is MO.Then the formula of the second oxide is-
Answer» 34. Two oxides of metal contains 50% and 40% of metal respectively. The formula of the first oxide is MO.Then the formula of the second oxide is-

Discussion

3.	Pt(s)∣M(s)∣M3+(aq,0.002 mol L−1)∥Ag+(aq,0.01 mol L−1)∣Ag(s)The emf of the given cell is found to be 0.42 V at 25∘C. Calculate the standard potential of the half reaction.M3+(aq) + 3e−→M(s)Given:E0Ag+/Ag = 0.80 V
Answer» $P t (s) ∣ M (s) ∣ M^{3 +} (a q, 0.002 m o l L^{- 1}) ∥ A g^{+} (a q, 0.01 m o l L^{- 1}) ∣ A g (s)$ The emf of the given cell is found to be $0.42 V$ at $25^{\circ} C$ . Calculate the standard potential of the half reaction. $M^{3 +} (a q) + 3 e^{-} \to M (s)$ Given: ${E^{0}}_{A g^{+} / A g} = 0.80 V$

Discussion

4.	earth is compressed to such a small sized sphere that the escape velocity becomes equal to the velocity of light what is the approximate radius of this small sized sphere?
Answer» earth is compressed to such a small sized sphere that the escape velocity becomes equal to the velocity of light what is the approximate radius of this small sized sphere?

Discussion

5.	Monosaccharides contain carbonyl group hence are classified, as aldose or ketose. The number of carbon atoms present in the monosaccharide molecule is also considered for classification. In which class of monosaccharide will you place fructose?
Answer» Monosaccharides contain carbonyl group hence are classified, as aldose or ketose. The number of carbon atoms present in the monosaccharide molecule is also considered for classification. In which class of monosaccharide will you place fructose?

Discussion

6.	When sodium propionate is heated with soda lime, the main product is
Answer» When sodium propionate is heated with soda lime, the main product is

Discussion

7.	Two compounds A and B in when mixed form nearly ideal solutions. At room temperature, P0A=40 mm Hg and P0B=120 mm Hg.A liquid mixture is composed of 1 mol of A and 3 mol of B. When the first trace of vapour is formed, choose the correct option(s) regarding composition of A and B in vapour phase :Here,yA=Composition of A in vapour phase when first trace of vapour is formedyB=Composition of B in vapour phase when first trace of vapour is formed
Answer» Two compounds A and B in when mixed form nearly ideal solutions. At room temperature, $P_{A}^{0} = 40 m m H g$ and $P_{B}^{0} = 120 m m H g$ . A liquid mixture is composed of $1 m o l$ of A and $3 m o l$ of B. When the first trace of vapour is formed, choose the correct option(s) regarding composition of A and B in vapour phase : Here, $y_{A} = Composition of A in vapour phase when first trace of vapour is formed$ $y_{B} = Composition of B in vapour phase when first trace of vapour is formed$

Discussion

8.	600 ml of a mixture of CO and CO2 weight 1 go at ntp. What is the volume of CO2 in the mixture attached ntp
Answer» 600 ml of a mixture of CO and CO2 weight 1 go at ntp. What is the volume of CO2 in the mixture attached ntp

Discussion

9.	Which of the following hydrogen halides react(s) with AgNO3 (ag) to give a precipiate that dissolves in Na2S2O3(ag)?
Answer» Which of the following hydrogen halides react(s) with $A g N O_{3} (a g)$ to give a precipiate that dissolves in $N a_{2} S_{2} O_{3} (a g)$ ?

Discussion

10.	Standard entropies of X2(g), Y2(g) and XY3(g) are 60, 40 and 50 J K−1 mol–1 respectively. For the reaction 12X2(g)+32Y2(g)⇌XY3(g), ΔH=–30 kJ, to be at equilibrium, the temperature should be:
Answer» Standard entropies of $X_{2} (g)$ , $Y_{2} (g)$ and $X Y_{3} (g)$ are $60, 40$ and $50 {J K}^{- 1} {mol}^{- 1}$ respectively. For the reaction $\frac{1}{2} X_{2} (g) + \frac{3}{2} Y_{2} (g) ⇌ X Y_{3} (g)$ , $Δ H = - 30 kJ$ , to be at equilibrium, the temperature should be:

Discussion

11.	Integrate dx/(ax+b), upper limit =L and lower limit = 0
Answer» Integrate dx/(ax+b), upper limit =L and lower limit = 0

Discussion

12.	The mass of a photon with wavelength 3.6˚A is .
Answer» The mass of a photon with wavelength 3.6˚A is .

Discussion

13.	normal drinking water releases both H+& OH- ions then it is acidic or basic ? \lbrack as it has some other minerals and ions and impurities added to it\rbrack
Answer» normal drinking water releases both H+& OH- ions then it is acidic or basic ? \lbrack as it has some other minerals and ions and impurities added to it\rbrack

Discussion

14.	A peptide is a short chain of amino acids. The amino acids in a peptide are connected to one another in a sequence by bonds called peptide bonds. Typically, peptides are distinguished from proteins by their shorter length, although the cut-off number of amino acids for defining a peptide and protein can be arbitrary. Peptides are generally considered to be short chains of two or more amino acids. Meanwhile, proteins are long molecules made up of multiple peptide subunits, and are also known as polypeptides. Proteins can be digested by enzymes (other proteins) into short peptide fragments. Among cells, peptides can perform biological functions. For example, some peptides act as hormones, which are molecules that when released from cells affect other areas of the body.A decapeptide (Mol. Wt. 796 g/mol) on complete hydrolysis gives glycine (Mol. Wt. 75 g/mol), alanine and phenylalanine. Glycine contribute 47% to the total weight of the hydrolyzed product.The number of glycine units in the decapeptide is:
Answer» A peptide is a short chain of amino acids. The amino acids in a peptide are connected to one another in a sequence by bonds called peptide bonds. Typically, peptides are distinguished from proteins by their shorter length, although the cut-off number of amino acids for defining a peptide and protein can be arbitrary. Peptides are generally considered to be short chains of two or more amino acids. Meanwhile, proteins are long molecules made up of multiple peptide subunits, and are also known as polypeptides. Proteins can be digested by enzymes (other proteins) into short peptide fragments. Among cells, peptides can perform biological functions. For example, some peptides act as hormones, which are molecules that when released from cells affect other areas of the body. A decapeptide (Mol. Wt. 796 g/mol) on complete hydrolysis gives glycine (Mol. Wt. 75 g/mol), alanine and phenylalanine. Glycine contribute 47% to the total weight of the hydrolyzed product.The number of glycine units in the decapeptide is:

Discussion

15.	Which one of the following can form an inner salt in its aqueous solution
Answer» Which one of the following can form an inner salt in its aqueous solution

Discussion

16.	If 500 cal of heat energy is added to a system and the system does 350 cal of work on the surroundings, the internal energy change of the system is :
Answer» If $500 cal$ of heat energy is added to a system and the system does $350 cal$ of work on the surroundings, the internal energy change of the system is :

Discussion

17.	Which of the following has a greater carbon-oxygen bond length? 1. Sodium formate 2. Calcium carbonate
Answer» Which of the following has a greater carbon-oxygen bond length? 1. Sodium formate 2. Calcium carbonate

Discussion

18.	Y can't we call light as particle moving in wave motion
Answer» Y can't we call light as particle moving in wave motion

Discussion

19.	an element with atomic mass 60 having FCC structure density of 6.23 gram centimeters what is edge length of units cell?
Answer» an element with atomic mass 60 having FCC structure density of 6.23 gram centimeters what is edge length of units cell?

Discussion

20.	Choose the correct statement(s) :(Assume complete dissociation/association)
Answer» Choose the correct statement(s) : (Assume complete dissociation/association)

Discussion

21.	5. The highest energy molecular orbital in O2 is 1) sigma 2 Pz 2)π 2 Px 3) sigma 1s 4)π*2Px
Answer» 5. The highest energy molecular orbital in O2 is 1) sigma 2 Pz 2)π 2 Px 3) sigma 1s 4)π*2Px

Discussion

22.	Which one of the following has highest number of stereoisomers?
Answer» Which one of the following has highest number of stereoisomers?

Discussion

23.	How distance is zero
Answer» How distance is zero

Discussion

24.	Match the following shapes with their correct halves.
Answer» Match the following shapes with their correct halves.

Discussion

25.	The number of photons emitted by a monochromatic (single frequency) infrared range finder of power 1 mW and wavelength of 1000 nm, in 0.1 second is x×1013. The value of x is . (Nearest integer)(h=6.63×10−34 Js, c=3.00×108 ms−1)
Answer» The number of photons emitted by a monochromatic (single frequency) infrared range finder of power 1 mW and wavelength of 1000 nm, in 0.1 second is $x \times 10^{13} .$ The value of x is . (Nearest integer) ( $h = 6.63 \times 10^{- 34} J s, c = 3.00 \times 10^{8} m s^{- 1}$ )

Discussion

26.	In neutral or faintly alkaline solution, 8 moles of permanganate anion quantitatively oxidize thisosulphate anions to produce X moles of a sulphur containing product. The magnitude of X is. ___
Answer» In neutral or faintly alkaline solution, 8 moles of permanganate anion quantitatively oxidize thisosulphate anions to produce X moles of a sulphur containing product. The magnitude of X is. ___

Discussion

27.	The current developed due to revolution of an electron in ground state of an atom (Z=2a) is i0 then for another atom (Z=3a), the current developed due to revolution of an electron in first excited state is -
Answer» The current developed due to revolution of an electron in ground state of an atom $(Z = 2 a)$ is $i_{0}$ then for another atom $(Z = 3 a)$ , the current developed due to revolution of an electron in first excited state is -

Discussion

28.	Find the osmotic pressure of decimolar solution of urea at 27∘C.
Answer» Find the osmotic pressure of decimolar solution of urea at $27^{\circ}$ C.

Discussion

29.	Acetal formation is a reversible reactionUnder what conditions, the reaction can be forced to proceed only in right (forward) direction ?
Answer» Acetal formation is a reversible reaction Under what conditions, the reaction can be forced to proceed only in right (forward) direction ?

Discussion

30.	Atoms of elemment A form ccp lattice and those of element B form 1/3 of octahedral voids the formula of compound formed by element A and B are
Answer» Atoms of elemment A form ccp lattice and those of element B form 1/3 of octahedral voids the formula of compound formed by element A and B are

Discussion

31.	According to Bronsted-Lowry concept, the relative strengths of the bases CH3COO−, OH− and Cl− are in the order -
Answer» According to Bronsted-Lowry concept, the relative strengths of the bases $C H_{3} C O O^{-}$ , $O H^{-}$ and $C l^{-}$ are in the order -

Discussion

32.	The correct option for free expansion of an ideal gas under adiabatic condition is:
Answer» The correct option for free expansion of an ideal gas under adiabatic condition is:

Discussion

33.	For a 3s-orbitalsΨ(3s)=19√3(1a0)3/2(6−6σ+σ2)e−σ/2;where σ=2r.Z3a0 What is the maximum radial distance of node from nucleus ?
Answer» For a 3s-orbitals $Ψ (3 s) = \frac{1}{9 \sqrt{3}} {(\frac{1}{a_{0}})}^{3 / 2} (6 - 6 σ + σ^{2}) e^{- σ / 2}; where σ = \frac{2 r . Z}{3 a_{0}}$ What is the maximum radial distance of node from nucleus ?

Discussion

34.	Question 19.1Write the balanced chemical equation for the following reaction and identify the type of reaction.Nitrogen gas is treated with hydrogen gas in the presence of a catalyst at 773K to form ammonia gas.
Answer» Question 19.1 Write the balanced chemical equation for the following reaction and identify the type of reaction. Nitrogen gas is treated with hydrogen gas in the presence of a catalyst at 773K to form ammonia gas.

Discussion

35.	a monoatomic gas at pressure p1 and volume v1 is compressed adiabatically to 1/8 th its original volume .what is the final pressure of tje gas
Answer» a monoatomic gas at pressure p1 and volume v1 is compressed adiabatically to 1/8 th its original volume .what is the final pressure of tje gas

Discussion

36.	34.A welding fuel gas contains carbon and hydrogen only burning a small sample of 8 oxygen give 3.38 gram carbon dioxide and 0.690 gram of water and no other product a volume of 10.0 lizard at STP of these welding gas is found to be 11.6 gram calculate first empirical formula II molecular mass of the gas and molecular formula
Answer» 34.A welding fuel gas contains carbon and hydrogen only burning a small sample of 8 oxygen give 3.38 gram carbon dioxide and 0.690 gram of water and no other product a volume of 10.0 lizard at STP of these welding gas is found to be 11.6 gram calculate first empirical formula II molecular mass of the gas and molecular formula

Discussion

37.	If the pressure on a NaCl structure is increased, then its coordination number will[AFMC 2000]
Answer» If the pressure on a NaCl structure is increased, then its coordination number will [AFMC 2000]

37.

If the pressure on a NaCl structure is increased, then its coordination number will[AFMC 2000]

Answer»

If the pressure on a NaCl structure is increased, then its coordination number will

[AFMC 2000]

Discussion

38.	The unitcell of a NaCl lattice
Answer» The unit cell of a NaCl lattice

Discussion

39.	Inorganic nutrients are present in the soil in the form of
Answer» Inorganic nutrients are present in the soil in the form of

39.

Inorganic nutrients are present in the soil in the form of

Answer»

Inorganic nutrients are present in the soil in the form of

Discussion

40.	Hydrogen bonding plays a central role in which of the following phenomena?
Answer» Hydrogen bonding plays a central role in which of the following phenomena?

Discussion

41.	28. How many 1^°,2^°,3^° H atoms are present in toluene ?
Answer» 28. How many 1^°,2^°,3^° H atoms are present in toluene ?

Discussion

42.	Which of the following pair of functional isomers and also respond aldol condensation
Answer» Which of the following pair of functional isomers and also respond aldol condensation

Discussion

43.	ntWhich of the following compound will not ill acetic acid and strong oxidation?n ntA) butanonen ntB) propanonen ntC) ethyl ethanoaten ntD) ethanoln
Answer» ntWhich of the following compound will not ill acetic acid and strong oxidation?n ntA) butanonen ntB) propanonen ntC) ethyl ethanoaten ntD) ethanoln

Discussion

44.	The formula of exhausted permutit is :
Answer» The formula of exhausted permutit is :

Discussion

45.	what is grabial thalimide reaction?
Answer» what is grabial thalimide reaction?

Discussion

46.	Compare the covalent character of(1) NaF, NaCl, NaBr, NaI.(2) NaCl, MgCl2, AlCl3.
Answer» Compare the covalent character of (1) NaF, NaCl, NaBr, NaI. (2) NaCl, MgCl2, AlCl3.

Discussion

47.	28. Chloroform or iodoform on heating with silver powder gives a) methane b) ethylene. c) ethane d) acetylene
Answer» 28. Chloroform or iodoform on heating with silver powder gives a) methane b) ethylene. c) ethane d) acetylene

Discussion

48.	The volume of air needed for complete conversion of 100cc of NO to NO2 will be-1)500cc,2)100cc,3)250cc,4)1250cc. 2NO(g)+O2(g)=2NO2(g) .
Answer» The volume of air needed for complete conversion of 100cc of NO to NO2 will be-1)500cc,2)100cc,3)250cc,4)1250cc. 2NO(g)+O2(g)=2NO2(g) .

Discussion

49.	Acidity of diprotic acid in aqueous solution increases in the order:
Answer» Acidity of diprotic acid in aqueous solution increases in the order:

Discussion

50.	The rate constant for two parallel reactions were found to be 1.0×10−2 dm3 mol−1 s−1 and 3.0×10−2 dm3 mol−1 s−1. If the corresponding energies of activation of the parallel reactions are 60.0 kJ mol−1 and 70.0 kJ mol−1 respectively, what is the apparent overall energy of activation?
Answer» The rate constant for two parallel reactions were found to be $1.0 \times 10^{- 2} {dm}^{3} {mol}^{- 1} s^{- 1}$ and $3.0 \times 10^{- 2} {dm}^{3} {mol}^{- 1} s^{- 1}$ . If the corresponding energies of activation of the parallel reactions are $60.0 {kJ mol}^{- 1}$ and $70.0 {kJ mol}^{- 1}$ respectively, what is the apparent overall energy of activation?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

GIVE REASON SUCROSE IS A COVALENT COMPOUND BUT IT S QUITE SOLUBLE IN WATER?

34. Two oxides of metal contains 50% and 40% of metal respectively. The formula of the first oxide is MO.Then the formula of the second oxide is-

Pt(s)∣M(s)∣M3+(aq,0.002 mol L−1)∥Ag+(aq,0.01 mol L−1)∣Ag(s)The emf of the given cell is found to be 0.42 V at 25∘C. Calculate the standard potential of the half reaction.M3+(aq) + 3e−→M(s)Given:E0Ag+/Ag = 0.80 V

earth is compressed to such a small sized sphere that the escape velocity becomes equal to the velocity of light what is the approximate radius of this small sized sphere?

Monosaccharides contain carbonyl group hence are classified, as aldose or ketose. The number of carbon atoms present in the monosaccharide molecule is also considered for classification. In which class of monosaccharide will you place fructose?

When sodium propionate is heated with soda lime, the main product is

600 ml of a mixture of CO and CO2 weight 1 go at ntp. What is the volume of CO2 in the mixture attached ntp

Which of the following hydrogen halides react(s) with AgNO3 (ag) to give a precipiate that dissolves in Na2S2O3(ag)?

Standard entropies of X2(g), Y2(g) and XY3(g) are 60, 40 and 50 J K−1 mol–1 respectively. For the reaction 12X2(g)+32Y2(g)⇌XY3(g), ΔH=–30 kJ, to be at equilibrium, the temperature should be:

Integrate dx/(ax+b), upper limit =L and lower limit = 0

The mass of a photon with wavelength 3.6˚A is .

normal drinking water releases both H+& OH- ions then it is acidic or basic ? \lbrack as it has some other minerals and ions and impurities added to it\rbrack

Which one of the following can form an inner salt in its aqueous solution

If 500 cal of heat energy is added to a system and the system does 350 cal of work on the surroundings, the internal energy change of the system is :

Which of the following has a greater carbon-oxygen bond length? 1. Sodium formate 2. Calcium carbonate

Y can't we call light as particle moving in wave motion

an element with atomic mass 60 having FCC structure density of 6.23 gram centimeters what is edge length of units cell?

Choose the correct statement(s) :(Assume complete dissociation/association)

5. The highest energy molecular orbital in O2 is 1) sigma 2 Pz 2)π 2 Px 3) sigma 1s 4)π*2Px

Which one of the following has highest number of stereoisomers?

How distance is zero

Match the following shapes with their correct halves.

The number of photons emitted by a monochromatic (single frequency) infrared range finder of power 1 mW and wavelength of 1000 nm, in 0.1 second is x×1013. The value of x is . (Nearest integer)(h=6.63×10−34 Js, c=3.00×108 ms−1)

In neutral or faintly alkaline solution, 8 moles of permanganate anion quantitatively oxidize thisosulphate anions to produce X moles of a sulphur containing product. The magnitude of X is. ___

The current developed due to revolution of an electron in ground state of an atom (Z=2a) is i0 then for another atom (Z=3a), the current developed due to revolution of an electron in first excited state is -

Find the osmotic pressure of decimolar solution of urea at 27∘C.

Acetal formation is a reversible reactionUnder what conditions, the reaction can be forced to proceed only in right (forward) direction ?

Atoms of elemment A form ccp lattice and those of element B form 1/3 of octahedral voids the formula of compound formed by element A and B are

According to Bronsted-Lowry concept, the relative strengths of the bases CH3COO−, OH− and Cl− are in the order -

The correct option for free expansion of an ideal gas under adiabatic condition is:

For a 3s-orbitalsΨ(3s)=19√3(1a0)3/2(6−6σ+σ2)e−σ/2;where σ=2r.Z3a0 What is the maximum radial distance of node from nucleus ?

Question 19.1Write the balanced chemical equation for the following reaction and identify the type of reaction.Nitrogen gas is treated with hydrogen gas in the presence of a catalyst at 773K to form ammonia gas.

a monoatomic gas at pressure p1 and volume v1 is compressed adiabatically to 1/8 th its original volume .what is the final pressure of tje gas

If the pressure on a NaCl structure is increased, then its coordination number will[AFMC 2000]

The unitcell of a NaCl lattice

Inorganic nutrients are present in the soil in the form of

Hydrogen bonding plays a central role in which of the following phenomena?

28. How many 1^°,2^°,3^° H atoms are present in toluene ?

Which of the following pair of functional isomers and also respond aldol condensation

ntWhich of the following compound will not ill acetic acid and strong oxidation?n ntA) butanonen ntB) propanonen ntC) ethyl ethanoaten ntD) ethanoln

The formula of exhausted permutit is :

what is grabial thalimide reaction?

Compare the covalent character of(1) NaF, NaCl, NaBr, NaI.(2) NaCl, MgCl2, AlCl3.

28. Chloroform or iodoform on heating with silver powder gives a) methane b) ethylene. c) ethane d) acetylene

The volume of air needed for complete conversion of 100cc of NO to NO2 will be-1)500cc,2)100cc,3)250cc,4)1250cc. 2NO(g)+O2(g)=2NO2(g) .

Acidity of diprotic acid in aqueous solution increases in the order: