46295 + Interview Questions in Chemistry

1.	How many of the following are negatively charged sols? Pt,Au,Ag,Fe(OH)3,Al(OH)3, As2S3,starch,clay,H4SiO4,eosin, methyleneblue,Haemoglobin,Cu,CdS, Congored,Cr(OH)3
Answer» How many of the following are negatively charged sols? $P t, A u, A g, F e (O H)_{3}, A l (O H)_{3}$ , $A s_{2} S_{3}, s t a r c h, c l a y, H_{4} S i O_{4}, e o s i n$ , $m e t h y l e n e b l u e, H a e m o g l o b i n, C u, C d S$ , $C o n g o r e d, C r (O H)_{3}$

Discussion

2.	The percentage of an edge length in a bcc unit cell which is not covered by atoms is nearly ( Round up to one decimal value):
Answer» The percentage of an edge length in a bcc unit cell which is not covered by atoms is nearly ( Round up to one decimal value):

Discussion

3.	25 ml of 3.0 M HNO3 are mixed with 75 ml of 4.0 M HNO3. If the volumes are additive, the molarity of the final mixture would be:
Answer» 25 ml of 3.0 M HNO₃ are mixed with 75 ml of 4.0 M HNO₃. If the volumes are additive, the molarity of the final mixture would be:

Discussion

4.	The weights of metals of different valencies deposited at the cathode during electrolysis are in the ratio of
Answer» The weights of metals of different valencies deposited at the cathode during electrolysis are in the ratio of

Discussion

5.	The mobility of metal ions in an aqueous medium (Li⨁,Na⨁,K⨁,Rb⨁) in an electric field, follows the order:
Answer» The mobility of metal ions in an aqueous medium $(L i^{⨁}, N a^{⨁}, K^{⨁}, R b^{⨁})$ in an electric field, follows the order:

Discussion

6.	Dry air is slowly passed through three solutions of different concentrations, C1, C2 and C3 each containing (non-volatile) NaCl as solute and water as solvent, as shown in the fig. If the vessel 2 gains weight and the vessel 3 loses weight, then
Answer» Dry air is slowly passed through three solutions of different concentrations, C1, C2 and C3 each containing (non-volatile) NaCl as solute and water as solvent, as shown in the fig. If the vessel 2 gains weight and the vessel 3 loses weight, then

6.

Dry air is slowly passed through three solutions of different concentrations, C1, C2 and C3 each containing (non-volatile) NaCl as solute and water as solvent, as shown in the fig. If the vessel 2 gains weight and the vessel 3 loses weight, then

Answer»

Dry air is slowly passed through three solutions of different concentrations, C1, C2 and C3 each containing (non-volatile) NaCl as solute and water as solvent, as shown in the fig. If the vessel 2 gains weight and the vessel 3 loses weight, then

Discussion

7.	Urea solution has a molarity of 4.0 mol L−1 and molality 4.0 mol kg−1 H2O. Thus, the density (g mL−1) of the solution is (Report the answer upto two decimals)
Answer» Urea solution has a molarity of $4.0 {mol L}^{- 1}$ and molality $4.0 {mol kg}^{- 1} H_{2} O$ . Thus, the density $({g mL}^{- 1})$ of the solution is (Report the answer upto two decimals)

Discussion

8.	A certain solid has a structure in which X atoms are located at the corners of the cubic cell, O at the edge centres and Y at the body centres. Then the formula of the cell is XaYbOc. If O atoms are missing from any two edge centres per unit cell, the formula is XxYyOz. Find the value of (a+b+c)+(x+y+z).
Answer» A certain solid has a structure in which $X$ atoms are located at the corners of the cubic cell, $O$ at the edge centres and $Y$ at the body centres. Then the formula of the cell is $X_{a} Y_{b} O_{c}$ . If $O$ atoms are missing from any two edge centres per unit cell, the formula is $X_{x} Y_{y} O_{z}$ . Find the value of $(a + b + c) + (x + y + z)$ .

Discussion

9.	What sorts of informations can you draw from the following reaction ? (CN)2(g)+2OH−(aq)⟶CN−(aq)+CNO−(aq)+H2O(l)
Answer» What sorts of informations can you draw from the following reaction ? $(C N)_{2 (g)} + 2 O H_{(a q)}^{-} ⟶ C N_{(a q)}^{-} + C N O_{(a q)}^{-} + H_{2} O_{(l)}$

Discussion

10.	An insulated container of two diatomic gases has two chambers separated by an insulting partition. One of the chambers has volume V1 and contains ideal gas at pressure p1 and temperature T1. The other chamber has volume V2 and contains ideal gas at pressure p2 and temperature T2. If the partition is removed without doing any work on the gas, the final equilibrium temperature of the gas in the container will be
Answer» An insulated container of two diatomic gases has two chambers separated by an insulting partition. One of the chambers has volume $V_{1}$ and contains ideal gas at pressure $p_{1}$ and temperature $T_{1}$ . The other chamber has volume $V_{2}$ and contains ideal gas at pressure $p_{2}$ and temperature $T_{2}$ . If the partition is removed without doing any work on the gas, the final equilibrium temperature of the gas in the container will be

Discussion

11.	Which of the following represents an incorrect set of quantum numbers?
Answer» Which of the following represents an incorrect set of quantum numbers?

Discussion

12.	Which of the following is the exact sawhorse projection representation for the following newman projection?
Answer» Which of the following is the exact sawhorse projection representation for the following newman projection?

Discussion

13.	A & B are isotopes. B & C are isobars. All three are radioactive. Then the correct statement is
Answer» A & B are isotopes. B & C are isobars. All three are radioactive. Then the correct statement is

Discussion

14.	What is the dichotomy about the causes of environmental degradation in India?
Answer» What is the dichotomy about the causes of environmental degradation in India?

Discussion

15.	What is breaking stress?
Answer» What is breaking stress?

Discussion

16.	Among the given compounds, the most susceptible to nucleophilic attack at the carbonyl group is
Answer» Among the given compounds, the most susceptible to nucleophilic attack at the carbonyl group is

Discussion

17.	Which one of the following series contains only electrophiles?
Answer» Which one of the following series contains only electrophiles?

Discussion

18.	Indicate the nature of bonding in CCl4 and CaH2
Answer» Indicate the nature of bonding in $C C l_{4}$ and $C a H_{2}$

Discussion

19.	Which is the correct energy profile diagram for the following solvolysis reaction?
Answer» Which is the correct energy profile diagram for the following solvolysis reaction?

Discussion

20.	State any four pressing environmental concerns of India. Correction for environmental damages involves opportunity costs. Explain.
Answer» State any four pressing environmental concerns of India. Correction for environmental damages involves opportunity costs. Explain.

Discussion

21.	Explain why p-nitrophenol is more acidic than phenol?
Answer» Explain why p-nitrophenol is more acidic than phenol?

Discussion

22.	With the help of an example explain what is meant by pseudo first order reaction.
Answer» With the help of an example explain what is meant by pseudo first order reaction.

Discussion

23.	Indicate the σ and π bonds in the following molecules: C6H6 C6H12, CH2Cl2 CH2=C=CH2 CH3NO2 Indicate the σ and n bonds in the following molecules:
Answer» Indicate the $σ$ and $π$ bonds in the following molecules: $C_{6} H_{6}$ $C_{6} H_{12}$ , $C H_{2} C l_{2}$ $C H_{2} = C = C H_{2}$ $C H_{3} N O_{2}$ Indicate the $σ$ and n bonds in the following molecules:

23.

Indicate the σ and π bonds in the following molecules: C6H6 C6H12, CH2Cl2 CH2=C=CH2 CH3NO2 Indicate the σ and n bonds in the following molecules:

Answer»

Indicate the $σ$ and $π$ bonds in the following molecules:
$C_{6} H_{6}$

$C_{6} H_{12}$ ,

$C H_{2} C l_{2}$

$C H_{2} = C = C H_{2}$

$C H_{3} N O_{2}$

Indicate the $σ$ and n bonds in the following molecules:

Discussion

24.	In the experiment to determine speed of sound by resonance tube the difference between first two resonance positions is
Answer» In the experiment to determine speed of sound by resonance tube the difference between first two resonance positions is

Discussion

25.	Two radioactive materials X1 and X2 have decay constant 10λ and λ, respectively. If initially they have the same number of nuclei, then the ratio of the number of nuclei of X1 to that of X2 will be 1e after a time
Answer» Two radioactive materials $X_{1}$ and $X_{2}$ have decay constant $10 λ$ and $λ$ , respectively. If initially they have the same number of nuclei, then the ratio of the number of nuclei of $X_{1}$ to that of $X_{2}$ will be $\frac{1}{e}$ after a time

Discussion

26.	The purest form of iron is
Answer» The purest form of iron is

Discussion

27.	If for a sucrose solution, elevation in boiling point is 0.1°C then what will be the boiling point of NaCl solution for same molal concentration
Answer» If for a sucrose solution, elevation in boiling point is 0.1°C then what will be the boiling point of NaCl solution for same molal concentration

Discussion

28.	Why tautomerism is not exhibited by (CH3)3CCHO
Answer» Why tautomerism is not exhibited by (CH3)3CCHO

Discussion

29.	If the concentration of glucose (C6H12O6) in blood is 0.9gL−1, what will be the molarity of glucose in blood ? (a) 5 M (b) 50 M (c) 0.005 M (d) 0.5 M
Answer» If the concentration of glucose $(C_{6} H_{12} O_{6})$ in blood is $0.9 g L^{- 1},$ what will be the molarity of glucose in blood ? (a) 5 M (b) 50 M (c) 0.005 M (d) 0.5 M

29.

If the concentration of glucose (C6H12O6) in blood is 0.9gL−1, what will be the molarity of glucose in blood ? (a) 5 M (b) 50 M (c) 0.005 M (d) 0.5 M

Answer»

If the concentration of glucose $(C_{6} H_{12} O_{6})$ in blood is $0.9 g L^{- 1},$ what will be the molarity of glucose in blood ?

(a) 5 M (b) 50 M (c) 0.005 M (d) 0.5 M

Discussion

30.	What is the molarity of a barium hydroxide solution if 15.48 mL of it is required to neutralize 25 mL of a 0.3096 M HCl solution?
Answer» What is the molarity of a barium hydroxide solution if $15.48 mL$ of it is required to neutralize $25 mL$ of a $0.3096 M H C l$ solution?

Discussion

31.	A piece of Al weighing 27 g is reacted with 200 mL of H2SO4 (specific gravity = 1.8 and 54.5 by weight). After the metal is completely dissolved, 73 g HCl is added and solution is further diluted to 500 mL solution. Find the concentration of H+ ion in mol/litre.
Answer» A piece of $A l$ weighing $27 g$ is reacted with $200 mL$ of $H_{2} S O_{4}$ (specific gravity = $1.8$ and $54.5$ by weight). After the metal is completely dissolved, $73 g$ $H C l$ is added and solution is further diluted to $500 mL$ solution. Find the concentration of $H^{+}$ ion in mol/litre.

Discussion

32.	In the above reaction 'A' and 'B' will respectively be:
Answer» In the above reaction 'A' and 'B' will respectively be:

Discussion

33.	Halogenation of alkanes is an example of
Answer» Halogenation of alkanes is an example of

Discussion

34.	The correct order of bond angle of C−C−C in propane, propene and propyne are
Answer» The correct order of bond angle of $C - C - C$ in propane, propene and propyne are

Discussion

35.	A regular copolymer of ethylene and vinyl chloride contains alternate monomers of each type. What is the mass percentage of ethylene in this co-polymer?
Answer» A regular copolymer of ethylene and vinyl chloride contains alternate monomers of each type. What is the mass percentage of ethylene in this co-polymer?

Discussion

36.	Which of the following species does not have eight valence electrons?
Answer» Which of the following species does not have eight valence electrons?

Discussion

37.	Which of the following group show +M effect?
Answer» Which of the following group show +M effect?

Discussion

38.	LiF or LiI which is more covalent and why?
Answer» LiF or LiI which is more covalent and why?

Discussion

39.	Find the total number of aldol addition products in given reaction? CH2O+Me−CHOdil. NaOH−−−−−−→0−5 oC
Answer» Find the total number of aldol addition products in given reaction? $C H_{2} O + M e - C H O d i l . N a O H - ----- \to 0 - 5^{o} C$

Discussion

40.	By changing a liquid to solid we are bringing it's atoms closer. (density increases) But if liquids are incompressible, how is it possible?
Answer» By changing a liquid to solid we are bringing it's atoms closer. (density increases) But if liquids are incompressible, how is it possible?

Discussion

41.	Calcium carbonate dissociates into CaO and CaCO3,= ∆H=110kj in a closed vessel.The pressure of Co2 a) increases if temperature increases b) decreases with increase in temperature
Answer» Calcium carbonate dissociates into CaO and CaCO3,= ∆H=110kj in a closed vessel.The pressure of Co2 a) increases if temperature increases b) decreases with increase in temperature

41.

Calcium carbonate dissociates into CaO and CaCO3,= ∆H=110kj in a closed vessel.The pressure of Co2 a) increases if temperature increases b) decreases with increase in temperature

Answer»

Calcium carbonate dissociates into CaO and CaCO3,= ∆H=110kj in a closed vessel.The pressure of Co2

a) increases if temperature increases

b) decreases with increase in temperature

Discussion

42.	Copper sulphate crystals contain 25.45%Cu and 36.07% H2O. If the law of constant proportions is true then calculate the weight of Cu required to obtain 50g of crystalline copper sulphate
Answer» Copper sulphate crystals contain 25.45%Cu and 36.07% H2O. If the law of constant proportions is true then calculate the weight of Cu required to obtain 50g of crystalline copper sulphate

Discussion

43.	The correct order of stability of following carbocations is: (A)+CH3 Methylcarbocation(B) CF3−CH+2 (C) CF3−C\|CF32oH+1o (D) CF3−CF3\|C+\|CF33o∣∣∣∣∣∣∣∣
Answer» The correct order of stability of following carbocations is: $(A) + C H_{3} Methyl carbocation (B) C F_{3} - C H_{2}^{+} (C) C F_{3} - C \| C F_{3} 2^{o} H^{+} 1^{o} (D) C F_{3} -^{+} \| C F_{3} 3^{o} ∣ ∣∣∣∣∣∣ ∣$

Discussion

44.	The structure of D-(+)-glucose is The structure of L-(-)-glucose is (IIT-JEE-2015, Advanced)
Answer» The structure of D-(+)-glucose is The structure of L-(-)-glucose is (IIT-JEE-2015, Advanced)

Discussion

45.	Teacher say that pv =NkT where valve of k is constant but k is constant for a particular tempature so how it is constant it is change with temperature😢😢😢😢
Answer» Teacher say that pv =NkT where valve of k is constant but k is constant for a particular tempature so how it is constant it is change with temperature😢😢😢😢

Discussion

46.	Based on the intermolecular forces of attraction,how can we classify solids as Ionic,Covalent,Molecular or Metallic and in Molecular as polar,non polar and hydrogen bonded?
Answer» Based on the intermolecular forces of attraction,how can we classify solids as Ionic,Covalent,Molecular or Metallic and in Molecular as polar,non polar and hydrogen bonded?

Discussion

47.	B+CO2 → A+B. A & B are as follows
Answer» $B + C O_{2}$ $\to A + B . A & B$ are as follows

Discussion

48.	How can electrons emit energy as photons?
Answer» How can electrons emit energy as photons?

Discussion

49.	Halides of alkali metals are high melting solids.Explain
Answer» Halides of alkali metals are high melting solids.Explain

Discussion

50.	If in the fermentation of sugar in an enzymatic solution which is intially 0.12M the concentration of sugar is reduced to 0.06M in 10h and to 0.03M in 20h , hence order of the reaction is (a) 0 (b)1 (c) 2 (d) 3
Answer» If in the fermentation of sugar in an enzymatic solution which is intially 0.12M the concentration of sugar is reduced to 0.06M in 10h and to 0.03M in 20h , hence order of the reaction is (a) 0 (b)1 (c) 2 (d) 3

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

How many of the following are negatively charged sols? Pt,Au,Ag,Fe(OH)3,Al(OH)3, As2S3,starch,clay,H4SiO4,eosin, methyleneblue,Haemoglobin,Cu,CdS, Congored,Cr(OH)3

The percentage of an edge length in a bcc unit cell which is not covered by atoms is nearly ( Round up to one decimal value):

25 ml of 3.0 M HNO3 are mixed with 75 ml of 4.0 M HNO3. If the volumes are additive, the molarity of the final mixture would be:

The weights of metals of different valencies deposited at the cathode during electrolysis are in the ratio of

The mobility of metal ions in an aqueous medium (Li⨁,Na⨁,K⨁,Rb⨁) in an electric field, follows the order:

Dry air is slowly passed through three solutions of different concentrations, C1, C2 and C3 each containing (non-volatile) NaCl as solute and water as solvent, as shown in the fig. If the vessel 2 gains weight and the vessel 3 loses weight, then

Urea solution has a molarity of 4.0 mol L−1 and molality 4.0 mol kg−1 H2O. Thus, the density (g mL−1) of the solution is (Report the answer upto two decimals)

What sorts of informations can you draw from the following reaction ? (CN)2(g)+2OH−(aq)⟶CN−(aq)+CNO−(aq)+H2O(l)

Which of the following represents an incorrect set of quantum numbers?

Which of the following is the exact sawhorse projection representation for the following newman projection?

A &amp; B are isotopes. B &amp; C are isobars. All three are radioactive. Then the correct statement is

What is the dichotomy about the causes of environmental degradation in India?

What is breaking stress?

Among the given compounds, the most susceptible to nucleophilic attack at the carbonyl group is

Which one of the following series contains only electrophiles?

Indicate the nature of bonding in CCl4 and CaH2

Which is the correct energy profile diagram for the following solvolysis reaction?

State any four pressing environmental concerns of India. Correction for environmental damages involves opportunity costs. Explain.

Explain why p-nitrophenol is more acidic than phenol?

With the help of an example explain what is meant by pseudo first order reaction.

Indicate the σ and π bonds in the following molecules: C6H6 C6H12, CH2Cl2 CH2=C=CH2 CH3NO2 Indicate the σ and n bonds in the following molecules:

In the experiment to determine speed of sound by resonance tube the difference between first two resonance positions is

Two radioactive materials X1 and X2 have decay constant 10λ and λ, respectively. If initially they have the same number of nuclei, then the ratio of the number of nuclei of X1 to that of X2 will be 1e after a time

The purest form of iron is

If for a sucrose solution, elevation in boiling point is 0.1°C then what will be the boiling point of NaCl solution for same molal concentration

Why tautomerism is not exhibited by (CH3)3CCHO

If the concentration of glucose (C6H12O6) in blood is 0.9gL−1, what will be the molarity of glucose in blood ? (a) 5 M (b) 50 M (c) 0.005 M (d) 0.5 M

What is the molarity of a barium hydroxide solution if 15.48 mL of it is required to neutralize 25 mL of a 0.3096 M HCl solution?

A piece of Al weighing 27 g is reacted with 200 mL of H2SO4 (specific gravity = 1.8 and 54.5 by weight). After the metal is completely dissolved, 73 g HCl is added and solution is further diluted to 500 mL solution. Find the concentration of H+ ion in mol/litre.

In the above reaction 'A' and 'B' will respectively be:

Halogenation of alkanes is an example of

The correct order of bond angle of C−C−C in propane, propene and propyne are

A regular copolymer of ethylene and vinyl chloride contains alternate monomers of each type. What is the mass percentage of ethylene in this co-polymer?

Which of the following species does not have eight valence electrons?

Which of the following group show +M effect?

LiF or LiI which is more covalent and why?

Find the total number of aldol addition products in given reaction? CH2O+Me−CHOdil. NaOH−−−−−−→0−5 oC

By changing a liquid to solid we are bringing it's atoms closer. (density increases) But if liquids are incompressible, how is it possible?

Calcium carbonate dissociates into CaO and CaCO3,= ∆H=110kj in a closed vessel.The pressure of Co2 a) increases if temperature increases b) decreases with increase in temperature

Copper sulphate crystals contain 25.45%Cu and 36.07% H2O. If the law of constant proportions is true then calculate the weight of Cu required to obtain 50g of crystalline copper sulphate

The correct order of stability of following carbocations is: (A)+CH3 Methylcarbocation(B) CF3−CH+2 (C) CF3−C|CF32oH+1o (D) CF3−CF3|C+|CF33o∣∣∣∣∣∣∣∣

The structure of D-(+)-glucose is The structure of L-(-)-glucose is (IIT-JEE-2015, Advanced)

Teacher say that pv =NkT where valve of k is constant but k is constant for a particular tempature so how it is constant it is change with temperature😢😢😢😢

Based on the intermolecular forces of attraction,how can we classify solids as Ionic,Covalent,Molecular or Metallic and in Molecular as polar,non polar and hydrogen bonded?

B+CO2 → A+B. A &amp; B are as follows

How can electrons emit energy as photons?

Halides of alkali metals are high melting solids.Explain

If in the fermentation of sugar in an enzymatic solution which is intially 0.12M the concentration of sugar is reduced to 0.06M in 10h and to 0.03M in 20h , hence order of the reaction is (a) 0 (b)1 (c) 2 (d) 3

A & B are isotopes. B & C are isobars. All three are radioactive. Then the correct statement is

B+CO2 → A+B. A & B are as follows