46295 + Interview Questions in Chemistry

1.	68. Similarity between Raoult law and Henry law
Answer» 68. Similarity between Raoult law and Henry law

Discussion

2.	With what velocity should an alpha particle travel towards the nucleus of a copper atom so as to arrive at a distance of 10^13m from the nucleus of the copper atom?
Answer» With what velocity should an alpha particle travel towards the nucleus of a copper atom so as to arrive at a distance of 10^13m from the nucleus of the copper atom?

Discussion

3.	An electron microscope is operated at 40 kV. Theratio of resolving power of this microscope and acompound microscope which uses yellow light ofwavelength 6 x 10 m, is
Answer» An electron microscope is operated at 40 kV. Theratio of resolving power of this microscope and acompound microscope which uses yellow light ofwavelength 6 x 10 m, is

Discussion

4.	24 How many moles of hydrogen are needed if it reacts with nitrogen to form 6 moles of ammonia with 80% yield?
Answer» 24 How many moles of hydrogen are needed if it reacts with nitrogen to form 6 moles of ammonia with 80% yield?

Discussion

5.	Arrange the following in the order of their increasing first ionisation energies. (Sc, Cr, Cu and Zn)
Answer» Arrange the following in the order of their increasing first ionisation energies. $(S c, C r, C u$ and $Z n)$

Discussion

6.	If f(x) = 1-x/1+x then f[f(cos2theta)] is
Answer» If f(x) = 1-x/1+x then f[f(cos2theta)] is

Discussion

7.	14.A biomolecule contains 0.4% Mg2+ by mass.The no. Of magnesium ions present in 2.5g of biomolecule is?
Answer» 14.A biomolecule contains 0.4% Mg2+ by mass.The no. Of magnesium ions present in 2.5g of biomolecule is?

Discussion

8.	On burning hydrogen in air, the colour of the flame is
Answer» On burning hydrogen in air, the colour of the flame is

Discussion

9.	What is Octane number in organic chemistry ?
Answer» What is Octane number in organic chemistry ?

Discussion

10.	Draw the graph of hysteresis curve for steel and iron
Answer» Draw the graph of hysteresis curve for steel and iron

Discussion

11.	The pKaoof acetylsalicyclic acid (aspirin) is 3.5. The pH of gastric juice in the human stomach is about 2 to 3 and the pH in small intestine is about 8. Aspirin will be
Answer» The ${p K_{a}}^{o}$ of acetylsalicyclic acid (aspirin) is 3.5. The pH of gastric juice in the human stomach is about 2 to 3 and the pH in small intestine is about 8. Aspirin will be

Discussion

12.	Among the four resonating structures of anthracene, what is the stability order?
Answer» Among the four resonating structures of anthracene, what is the stability order?

Discussion

13.	A crystalline solid AB has NaCI type structure withradius of B- ion is 250 pm. Which of the followingcation can be made to slip into tetrahedral site ofcrystals of A"B"?(1) P" (radius 180 pm)(2) Q+(radius56 pm)(3) R (radius 200 pm)4) S (radius 150 pm)
Answer» A crystalline solid AB has NaCI type structure withradius of B- ion is 250 pm. Which of the followingcation can be made to slip into tetrahedral site ofcrystals of A"B"?(1) P" (radius 180 pm)(2) Q+(radius56 pm)(3) R (radius 200 pm)4) S (radius 150 pm)

Discussion

14.	What happens to atomic radius on going from left to right in a period in a periodic table?
Answer» What happens to atomic radius on going from left to right in a period in a periodic table?

Discussion

15.	21. Structure of H ,C , N and their oxidation state in HCN are
Answer» 21. Structure of H ,C , N and their oxidation state in HCN are

Discussion

16.	role of DMF and its impor†an t reactions in organic chemistry
Answer» role of DMF and its impor†an t reactions in organic chemistry

Discussion

17.	Which of the following halides have the highest basic strength?
Answer» Which of the following halides have the highest basic strength?

Discussion

18.	17. The reaction which is not occurring at the temperature range of 500 to 800 K in blast furnace ?
Answer» 17. The reaction which is not occurring at the temperature range of 500 to 800 K in blast furnace ?

Discussion

19.	A) State Henry's law, B) How does solubility of gas in water varies with the temperature.?
Answer» A) State Henry's law, B) How does solubility of gas in water varies with the temperature.?

19.

A) State Henry's law, B) How does solubility of gas in water varies with the temperature.?

Answer»

A) State Henry's law,

B) How does solubility of gas in water varies with the temperature.?

Discussion

20.	if a/b=c/d=x/y then prove that a+c/b+d=x/y
Answer» if a/b=c/d=x/y then prove that a+c/b+d=x/y

Discussion

21.	isoester and how to calculate no of valence electrons
Answer» isoester and how to calculate no of valence electrons

Discussion

22.	a crystaline solid AB adopts soduim chloride type structure with edge length of unit cell as 745pm and formula mass of 74.5a.m.u the density of crystallie compound is
Answer» a crystaline solid AB adopts soduim chloride type structure with edge length of unit cell as 745pm and formula mass of 74.5a.m.u the density of crystallie compound is

Discussion

23.	In the equation 4M+8CN−+2H2O+O2→ 4[M(CN)2]+4OH− Identify metal M:
Answer» In the equation $4 M + 8 C N^{-} + 2 H_{2} O + O_{2} \to 4 [M (C N)_{2}] + 4 O H^{-}$ Identify metal M:

Discussion

24.	How to find which is the central atom in a compound?
Answer» How to find which is the central atom in a compound?

Discussion

25.	What volume of hydrogen gas (in litres) at 273 K and 1 atm pressure will be consumed to obtain 21.6 g of elemental boron (atomic mass = 10.8) from the reduction of boron trichloride by hydrogen?
Answer» What volume of hydrogen gas (in litres) at 273 K and 1 atm pressure will be consumed to obtain 21.6 g of elemental boron (atomic mass = 10.8) from the reduction of boron trichloride by hydrogen?

Discussion

26.	H3PO3can be represented by structures 1 and 2 shown below. Can these twostructures be taken as the canonical forms of the resonance hybridrepresenting H3PO3?If not, give reasons for the same.
Answer» H₃PO₃ can be represented by structures 1 and 2 shown below. Can these two structures be taken as the canonical forms of the resonance hybrid representing H₃PO₃? If not, give reasons for the same.

26.

H3PO3can be represented by structures 1 and 2 shown below. Can these twostructures be taken as the canonical forms of the resonance hybridrepresenting H3PO3?If not, give reasons for the same.

Answer»

H₃PO₃
can be represented by structures 1 and 2 shown below. Can these two
structures be taken as the canonical forms of the resonance hybrid
representing H₃PO₃?
If not, give reasons for the same.

Discussion

27.	Which of the following is not an antacid?
Answer» Which of the following is not an antacid?

Discussion

28.	Which one of the following esters gets hydrolysed most easily under alkaline conditions?
Answer» Which one of the following esters gets hydrolysed most easily under alkaline conditions?

Discussion

29.	How AlCl3 have 6 electrons in it's last shell?
Answer» How AlCl3 have 6 electrons in it's last shell?

Discussion

30.	Depict the galvanic cell in which the reaction Zn(s)+2Ag+(aq)⟶Zn2+(aq)+2Ag(s) takes place, further show: Which of the electrode is negatively charged, The carriers of the current in the cell. Individual reaction at each electrode.
Answer» Depict the galvanic cell in which the reaction $Z n (s) + 2 A g^{+} (a q) ⟶ Z n^{2 +} (a q) + 2 A g (s)$ takes place, further show: Which of the electrode is negatively charged, The carriers of the current in the cell. Individual reaction at each electrode.

30.

Depict the galvanic cell in which the reaction Zn(s)+2Ag+(aq)⟶Zn2+(aq)+2Ag(s) takes place, further show: Which of the electrode is negatively charged, The carriers of the current in the cell. Individual reaction at each electrode.

Answer»

Depict the galvanic cell in which the reaction $Z n (s) + 2 A g^{+} (a q) ⟶ Z n^{2 +} (a q) + 2 A g (s)$ takes place, further show:
Which of the electrode is negatively charged,

The carriers of the current in the cell.

Individual reaction at each electrode.

Discussion

31.	in alkaline medium what will be the equivalent weight of I2 on its conversion to iodate ion
Answer» in alkaline medium what will be the equivalent weight of I2 on its conversion to iodate ion

Discussion

32.	What is significant figure
Answer» What is significant figure

Discussion

33.	Predict the structure of final product 'C' in the following sequence:
Answer» Predict the structure of final product 'C' in the following sequence:

Discussion

34.	Ionisation constant of ch3cooh is 1.7 10-5
Answer» Ionisation constant of ch3cooh is 1.7 10-5

Discussion

35.	Two liquids A and B mixed such that the adhesive forces between molecules are much larger than their respective cohesive forces. In such case, the solution will
Answer» Two liquids A and B mixed such that the adhesive forces between molecules are much larger than their respective cohesive forces. In such case, the solution will

Discussion

36.	50 kg of N2 (g) and 10 kg of H2 are mixed to produce NH3 (g). Calculate the amount of NH3 (g) formed. (assume the reaction goes to completion) N2(g)+3H2(g)→2NH3(g)
Answer» $50 kg$ of $N_{2} (g)$ and $10 kg$ of $H_{2}$ are mixed to produce $N H_{3} (g)$ . Calculate the amount of $N H_{3} (g)$ formed. (assume the reaction goes to completion) $N_{2} (g) + 3 H_{2} (g) \to 2 N H_{3} (g)$

Discussion

37.	a solution of glycol containing 1.82g/litre has an osmotic pressure of 51.8 cm of mercury at 10 degree Celsius what is the molecular weight of glycol
Answer» a solution of glycol containing 1.82g/litre has an osmotic pressure of 51.8 cm of mercury at 10 degree Celsius what is the molecular weight of glycol

Discussion

38.	The correct order of energies of d-orbitals of metal ions in a square planar complex is :
Answer» The correct order of energies of d-orbitals of metal ions in a square planar complex is :

Discussion

39.	If the mole fraction ofzncl2 in water is 0.3 then molality of the solution will be?
Answer» If the mole fraction ofzncl2 in water is 0.3 then molality of the solution will be?

Discussion

40.	. Calculate E°cell and ∆rG° for the following reaction at 25°C. A2+(aq) + B+(aq) → A3+(aq) + B(s) [Given KC = 1010, 1F = 96500 C, R = 8.314 JK–1 mol–1]
Answer» . Calculate E°cell and ∆rG° for the following reaction at 25°C. A2+(aq) + B+(aq) → A3+(aq) + B(s) [Given KC = 1010, 1F = 96500 C, R = 8.314 JK–1 mol–1]

Discussion

41.	Predict the major product for the following reaction:
Answer» Predict the major product for the following reaction:

41.

Predict the major product for the following reaction:

Answer»

Predict the major product for the following reaction:

Discussion

42.	Select the functional groups that can show metamerism.
Answer» Select the functional groups that can show metamerism.

Discussion

43.	in hydrogen atom the de broglie wavelength of an electron in the second bohr orbit is
Answer» in hydrogen atom the de broglie wavelength of an electron in the second bohr orbit is

Discussion

44.	Write the conjugate acids of the following nucleophile: 1)R3N 2) RCHCN- 3) NH2 - 4) Br- 5) CH3CH2O-
Answer» Write the conjugate acids of the following nucleophile: 1)R3N 2) RCHCN- 3) NH2 - 4) Br- 5) CH3CH2O-

Discussion

45.	A certain volume of nitrogen gas at 0.8 atm takes 25 seconds to diffuse through a pin hole whereas the same volume of an unknown compound of xenon and flourine at 1.6 atm takes 37 second to diffuse through the same hole. The molecule formed can be expressed as XeFn. Find the value of n. (Given: Molecular mass of Xe = 131 u)
Answer» A certain volume of nitrogen gas at 0.8 atm takes 25 seconds to diffuse through a pin hole whereas the same volume of an unknown compound of xenon and flourine at 1.6 atm takes 37 second to diffuse through the same hole. The molecule formed can be expressed as $X e F_{n}$ . Find the value of $n$ . (Given: Molecular mass of Xe = 131 u)

Discussion

46.	Which of the following is least paramagnetic?
Answer» Which of the following is least paramagnetic?

Discussion

47.	ntWhat is energy of dissolution or energy of hydration .HOw enery of hydration depends upon solubitlity?n
Answer» ntWhat is energy of dissolution or energy of hydration .HOw enery of hydration depends upon solubitlity?n

Discussion

48.	How to find maximum and minimum values?
Answer» How to find maximum and minimum values?

Discussion

49.	37.What is compton effect
Answer» 37.What is compton effect

Discussion

50.	Are antioxidants a part of nutrients?
Answer» Are antioxidants a part of nutrients?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

68. Similarity between Raoult law and Henry law

With what velocity should an alpha particle travel towards the nucleus of a copper atom so as to arrive at a distance of 10^13m from the nucleus of the copper atom?

An electron microscope is operated at 40 kV. Theratio of resolving power of this microscope and acompound microscope which uses yellow light ofwavelength 6 x 10 m, is

24 How many moles of hydrogen are needed if it reacts with nitrogen to form 6 moles of ammonia with 80% yield?

Arrange the following in the order of their increasing first ionisation energies. (Sc, Cr, Cu and Zn)

If f(x) = 1-x/1+x then f[f(cos2theta)] is

14.A biomolecule contains 0.4% Mg2+ by mass.The no. Of magnesium ions present in 2.5g of biomolecule is?

On burning hydrogen in air, the colour of the flame is

What is Octane number in organic chemistry ?

Draw the graph of hysteresis curve for steel and iron

The pKaoof acetylsalicyclic acid (aspirin) is 3.5. The pH of gastric juice in the human stomach is about 2 to 3 and the pH in small intestine is about 8. Aspirin will be

Among the four resonating structures of anthracene, what is the stability order?

A crystalline solid AB has NaCI type structure withradius of B- ion is 250 pm. Which of the followingcation can be made to slip into tetrahedral site ofcrystals of A"B"?(1) P" (radius 180 pm)(2) Q+(radius56 pm)(3) R (radius 200 pm)4) S (radius 150 pm)

What happens to atomic radius on going from left to right in a period in a periodic table?

21. Structure of H ,C , N and their oxidation state in HCN are

role of DMF and its impor†an t reactions in organic chemistry

Which of the following halides have the highest basic strength?

17. The reaction which is not occurring at the temperature range of 500 to 800 K in blast furnace ?

A) State Henry's law, B) How does solubility of gas in water varies with the temperature.?

if a/b=c/d=x/y then prove that a+c/b+d=x/y

isoester and how to calculate no of valence electrons

a crystaline solid AB adopts soduim chloride type structure with edge length of unit cell as 745pm and formula mass of 74.5a.m.u the density of crystallie compound is

In the equation 4M+8CN−+2H2O+O2→ 4[M(CN)2]+4OH− Identify metal M:

How to find which is the central atom in a compound?

What volume of hydrogen gas (in litres) at 273 K and 1 atm pressure will be consumed to obtain 21.6 g of elemental boron (atomic mass = 10.8) from the reduction of boron trichloride by hydrogen?

H3PO3can be represented by structures 1 and 2 shown below. Can these twostructures be taken as the canonical forms of the resonance hybridrepresenting H3PO3?If not, give reasons for the same.

Which of the following is not an antacid?

Which one of the following esters gets hydrolysed most easily under alkaline conditions?

How AlCl3 have 6 electrons in it's last shell?

Depict the galvanic cell in which the reaction Zn(s)+2Ag+(aq)⟶Zn2+(aq)+2Ag(s) takes place, further show: Which of the electrode is negatively charged, The carriers of the current in the cell. Individual reaction at each electrode.

in alkaline medium what will be the equivalent weight of I2 on its conversion to iodate ion

What is significant figure

Predict the structure of final product 'C' in the following sequence:

Ionisation constant of ch3cooh is 1.7 10-5

Two liquids A and B mixed such that the adhesive forces between molecules are much larger than their respective cohesive forces. In such case, the solution will

50 kg of N2 (g) and 10 kg of H2 are mixed to produce NH3 (g). Calculate the amount of NH3 (g) formed. (assume the reaction goes to completion) N2(g)+3H2(g)→2NH3(g)

a solution of glycol containing 1.82g/litre has an osmotic pressure of 51.8 cm of mercury at 10 degree Celsius what is the molecular weight of glycol

The correct order of energies of d-orbitals of metal ions in a square planar complex is :

If the mole fraction ofzncl2 in water is 0.3 then molality of the solution will be?

. Calculate E°cell and ∆rG° for the following reaction at 25°C. A2+(aq) + B+(aq) → A3+(aq) + B(s) [Given KC = 1010, 1F = 96500 C, R = 8.314 JK–1 mol–1]

Predict the major product for the following reaction:

Select the functional groups that can show metamerism.

in hydrogen atom the de broglie wavelength of an electron in the second bohr orbit is

Write the conjugate acids of the following nucleophile: 1)R3N 2) RCHCN- 3) NH2 - 4) Br- 5) CH3CH2O-

Which of the following is least paramagnetic?

ntWhat is energy of dissolution or energy of hydration .HOw enery of hydration depends upon solubitlity?n

How to find maximum and minimum values?

37.What is compton effect

Are antioxidants a part of nutrients?