46295 + Interview Questions in Chemistry

1.	Which is main product in the reaction of but 1 - yne with an excess of hydrogen chloride?
Answer» Which is main product in the reaction of but 1 - yne with an excess of hydrogen chloride?

Discussion

2.	osmotic pressure of 18% solution of glucose at 27 c
Answer» osmotic pressure of 18% solution of glucose at 27 c

Discussion

3.	57. The rate equation for an autocatalytic reaction A + R = R + R is -d[A]/dt = k[A][R] Prove that when the rate of disappearance of reactant A is maximum then [A]=[R]
Answer» 57. The rate equation for an autocatalytic reaction A + R = R + R is -d[A]/dt = k[A][R] Prove that when the rate of disappearance of reactant A is maximum then [A]=[R]

Discussion

4.	A certain non volatile non electrolyte solute contains 69.4% carbon, 11.55% nitrogen and 5.8% hydrogen (all percentage are by mass). A solution containing 40% by weight of this substance boils at 100.11degree celcius. The Kb=0.04K kg/mol and the boiling point of pure solvent is 373K. What is the formula of the compound?
Answer» A certain non volatile non electrolyte solute contains 69.4% carbon, 11.55% nitrogen and 5.8% hydrogen (all percentage are by mass). A solution containing 40% by weight of this substance boils at 100.11degree celcius. The Kb=0.04K kg/mol and the boiling point of pure solvent is 373K. What is the formula of the compound?

Discussion

5.	WEhat in markonikoff;s reaction?
Answer» WEhat in markonikoff;s reaction?

Discussion

6.	'h' represent the height of the HCP unit cell and 'a' represent edge length of the hexagonal surface of the HCP unit cell. What is the value of h/a?
Answer» 'h' represent the height of the HCP unit cell and 'a' represent edge length of the hexagonal surface of the HCP unit cell. What is the value of h/a?

Discussion

7.	Inwhich one of the following case breaking of covalent bond takes place?
Answer» In which one of the following case breaking of covalent bond takes place?

Discussion

8.	A uniform cubical block of side 2m and density 0.2 g/cc is fixed to the horizontal floor as shown in figure. A force 5 kN is applied on the top face of the cube, then
Answer» A uniform cubical block of side 2m and density 0.2 g/cc is fixed to the horizontal floor as shown in figure. A force 5 kN is applied on the top face of the cube, then

8.

A uniform cubical block of side 2m and density 0.2 g/cc is fixed to the horizontal floor as shown in figure. A force 5 kN is applied on the top face of the cube, then

Answer»

A uniform cubical block of side 2m and density 0.2 g/cc is fixed to the horizontal floor as shown in figure. A force 5 kN is applied on the top face of the cube, then

Discussion

9.	A CIRCULAR DISC X OF RADIUS R IS MADE FROM AN IRON PLATE OF THICKNESS t AND ANOTHER DISC Y OF RADIUS 4R IS MADE FROM AN IRON PLATE OF THICKNESS t/4 .FIND THE RELATION BETWEEN THE MOMENT OF INERTIA IX AND IY ?
Answer» A CIRCULAR DISC X OF RADIUS R IS MADE FROM AN IRON PLATE OF THICKNESS t AND ANOTHER DISC Y OF RADIUS 4R IS MADE FROM AN IRON PLATE OF THICKNESS t/4 .FIND THE RELATION BETWEEN THE MOMENT OF INERTIA IX AND IY ?

Discussion

10.	What is meant when it is said that this natural process occurs in a particular direction ?
Answer» What is meant when it is said that this natural process occurs in a particular direction ?

Discussion

11.	ntWhat is the meaning of this line: in case of phosphorous nearly all intermediate oxidation states disproportionate into +5 and -3 both in alkali and acidn
Answer» ntWhat is the meaning of this line: in case of phosphorous nearly all intermediate oxidation states disproportionate into +5 and -3 both in alkali and acidn

Discussion

12.	The Bakelite is made from phenol and formaldehyde. The initial reaction between the two compounds is an example of
Answer» The Bakelite is made from phenol and formaldehyde. The initial reaction between the two compounds is an example of

Discussion

13.	100 Calculate the no. Of aluminum ions in 0. 051g of aluminum oxide
Answer» 100 Calculate the no. Of aluminum ions in 0. 051g of aluminum oxide

Discussion

14.	Choose the correct order for the boiling points of amines:
Answer» Choose the correct order for the boiling points of amines:

Discussion

15.	what is the energy of nTH type orbital?
Answer» what is the energy of nTH type orbital?

Discussion

16.	Which of the following is true for calcination of a metal ore?
Answer» Which of the following is true for calcination of a metal ore?

Discussion

17.	For the water gas reaction: C(s)+H2O(g)⇌CO(g)+H2(g),the standard Gibbs energy of reaction (at 1000 K) is −8.1 kJ mol−1. What will be the equilibrium constant for the reaction? log 2.648=0.4229
Answer» For the water gas reaction: $C_{(s)} + H_{2} O_{(g)} ⇌ C O_{(g)} + H_{2 (g)},$ the standard Gibbs energy of reaction (at 1000 K) is $- 8.1 k J m o l^{- 1} .$ What will be the equilibrium constant for the reaction? $l o g 2.648 = 0.4229$

Discussion

18.	What is the trend of solubility of carbonates down the group? Also give the order of solubility for group 2 carbonates
Answer» What is the trend of solubility of carbonates down the group? Also give the order of solubility for group 2 carbonates

Discussion

19.	Do all metals possess a closed packed structure ? Name the different structures exhibited and give their packing fractions
Answer» Do all metals possess a closed packed structure ? Name the different structures exhibited and give their packing fractions

Discussion

20.	, explain that equilibrium constant is actually unit less?
Answer» , explain that equilibrium constant is actually unit less?

Discussion

21.	Asolution which is 10-3 M each in Mn2+, Fe2+,Zn2+ and Hg2+ is treated with 10-16 M sulphideion. If Ksp of MnS, FeS, ZnS and HgS are 10-15, 10-23,10-20 and 10-54 respectively, which one will precipitatefirst?
Answer» A solution which is 10^-3 M each in Mn²⁺, Fe²⁺, Zn²⁺ and Hg²⁺ is treated with 10^-16 M sulphide ion. If K_sp of MnS, FeS, ZnS and HgS are 10^-15, 10^-23, 10^-20 and 10^-54 respectively, which one will precipitate first?

Discussion

22.	Write down the concentration of 2g NaOH in 50ml solution in g/L and mol/L.
Answer» Write down the concentration of 2g NaOH in 50ml solution in g/L and mol/L.

Discussion

23.	Calculate the volume of water to be added to 400ml of semi normal HCL solution to make it decinormal
Answer» Calculate the volume of water to be added to 400ml of semi normal HCL solution to make it decinormal

Discussion

24.	Differentiate y= (x)^x
Answer» Differentiate y= (x)^x

Discussion

25.	Smoke is an example of
Answer» Smoke is an example of

Discussion

26.	How to find n factors of reaction??
Answer» How to find n factors of reaction??

Discussion

27.	Q 36/90 100 ml of 0.2 M Na2SO4 solution is mixedwith 400 ml of 0.1 M Al2(SO4)3 solution. The molarconcentration of SO42 ion in the final solution is
Answer» Q 36/90 100 ml of 0.2 M Na2SO4 solution is mixedwith 400 ml of 0.1 M Al2(SO4)3 solution. The molarconcentration of SO42 ion in the final solution is

Discussion

28.	2. Which of the following alkane upon dichlorination can give only two products? 1-Propane 2-methane 3-2,2-dimethylpropane 4-cyclohexane
Answer» 2. Which of the following alkane upon dichlorination can give only two products? 1-Propane 2-methane 3-2,2-dimethylpropane 4-cyclohexane

Discussion

29.	In which of the following compounds Cl has the oxidation state of +1 ?
Answer» In which of the following compounds $C l$ has the oxidation state of $+ 1$ ?

Discussion

30.	What is electron pool Metallic solid Positive kernels and mobile electron
Answer» What is electron pool Metallic solid Positive kernels and mobile electron

Discussion

31.	Reaction of ch3coch2ch3 with peracid m cpba gives
Answer» Reaction of ch3coch2ch3 with peracid m cpba gives

Discussion

32.	Which of the following statement is not true for halogens 1)chlorine has highest electron gain enthalphy 2)all forms monobasic oxyacids 3)all but flourine shows positive oxidation states 4)all are oxidising agents
Answer» Which of the following statement is not true for halogens 1)chlorine has highest electron gain enthalphy 2)all forms monobasic oxyacids 3)all but flourine shows positive oxidation states 4)all are oxidising agents

32.

Which of the following statement is not true for halogens 1)chlorine has highest electron gain enthalphy 2)all forms monobasic oxyacids 3)all but flourine shows positive oxidation states 4)all are oxidising agents

Answer»

Which of the following statement is not true for halogens

1)chlorine has highest electron gain enthalphy

2)all forms monobasic oxyacids

3)all but flourine shows positive oxidation states

4)all are oxidising agents

Discussion

33.	35 If 1 mol of CH3COOH and 1mol of C2H5OH are mixed and the reaction proceeds to equilibrium, the conc. of CH3COOH and H2O are found to be 1/3 and 2/3 mol respectively. If 1 mol of ethyl acetate and 3 moles of water are mixed, how much ester is present when equilibrium is reached?
Answer» 35 If 1 mol of CH3COOH and 1mol of C2H5OH are mixed and the reaction proceeds to equilibrium, the conc. of CH3COOH and H2O are found to be 1/3 and 2/3 mol respectively. If 1 mol of ethyl acetate and 3 moles of water are mixed, how much ester is present when equilibrium is reached?

Discussion

34.	The strongest acid amongst the following compounds is
Answer» The strongest acid amongst the following compounds is

Discussion

35.	If the number of electrons present in 1990 mg of perchlorate ion is a×1023 then the value of ‘a′ would be? Give your answer upto two decimal only. (Given NA=6.02×1023, molar mass of Cl=35.5 g)
Answer» If the number of electrons present in $1990 m g$ of perchlorate ion is $a \times 10^{23}$ then the value of $‘ a^{'}$ would be? Give your answer upto two decimal only. (Given $N_{A} = 6.02 \times 10^{23}$ , molar mass of $C l = 35.5 g$ )

Discussion

36.	Why is CH3 reffered as electron donating group ? please explain..
Answer» Why is CH₃ reffered as electron donating group ? please explain..

Discussion

37.	Find the weight of NaNO3 in grams (Rounded off to nearest integer), required to make 50 mL of an aqueous solution containing 70 mg per mL of Na+ ions [Given:Atomic weight in gmol−1[Na:23;N:14;O:16]
Answer» Find the weight of $N a N O_{3}$ in grams (Rounded off to nearest integer), required to make 50 mL of an aqueous solution containing 70 mg per mL of $N a^{+}$ ions [Given:Atomic weight in $g m o l^{- 1} [N a : 23; N : 14; O : 16]$

Discussion

38.	11. what are the symbols and formulae for : 1. molar conductance 2. specific conductance 3. equivalent conductance 4. electrical conductance
Answer» 11. what are the symbols and formulae for : 1. molar conductance 2. specific conductance 3. equivalent conductance 4. electrical conductance

Discussion

39.	39 What is tetrahedral voids and octahedral voids?
Answer» 39 What is tetrahedral voids and octahedral voids?

Discussion

40.	The correct order of IP1 is
Answer» The correct order of $I P_{1}$ is

Discussion

41.	The oxidative cleavage of 1,2-diol by a periodic acid or periodic salt to give corresponding carbonyls is known as Malaprade oxidation.Vicinal diols can also be oxidized to form aldehydes and ketones by lead tetraacetate. This oxidative cleavage is analogous to malaprade oxidation and is known as Criegee oxidation.When Halohydrin is treated with Ag2O or Silver salt, it gives pinacol-pinacolone type rearrangement called semi-pinacol rearrangement. List-I contains reactions and List-II contains products that can be formed.Which of the following options has the correct combination considering reaction in List-I and their product(s) in List-II?
Answer» The oxidative cleavage of 1,2-diol by a periodic acid or periodic salt to give corresponding carbonyls is known as Malaprade oxidation. Vicinal diols can also be oxidized to form aldehydes and ketones by lead tetraacetate. This oxidative cleavage is analogous to malaprade oxidation and is known as Criegee oxidation. When Halohydrin is treated with $A g_{2} O$ or Silver salt, it gives pinacol-pinacolone type rearrangement called semi-pinacol rearrangement. List-I contains reactions and List-II contains products that can be formed. Which of the following options has the correct combination considering reaction in List-I and their product(s) in List-II?

Discussion

42.	The wavelength associated with a golf ball weighing 200g and moving at a speed of 5m/h is of the order
Answer» The wavelength associated with a golf ball weighing 200g and moving at a speed of 5m/h is of the order

Discussion

43.	Why does tautomerism take place?
Answer» Why does tautomerism take place?

Discussion

44.	In the given conversion, the best yield will be obtained with:
Answer» In the given conversion, the best yield will be obtained with:

Discussion

45.	1litre of O2 at STP is made to react with 3litre of carbon monoxide at STP . Calculate the mass of each substance formed after the reaction?
Answer» 1litre of O₂ at STP is made to react with 3litre of carbon monoxide at STP . Calculate the mass of each substance formed after the reaction?

Discussion

46.	Which of the following is not the correct increasing order of ionization energy?
Answer» Which of the following is not the correct increasing order of ionization energy?

46.

Which of the following is not the correct increasing order of ionization energy?

Answer»

Which of the following is not the correct increasing order of ionization energy?

Discussion

47.	The pH of 0.2 M HCN is 4.2, the value of Ka for HCN is 1.99x10^-x. calculate the value of x.
Answer» The pH of 0.2 M HCN is 4.2, the value of Ka for HCN is 1.99x10^-x. calculate the value of x.

Discussion

48.	why alkyl free radical is more stable than viny
Answer» why alkyl free radical is more stable than viny

Discussion

49.	The dipole moment of a system of charge + q distributed uniformly on an arc of radius R subtending an angle π/2 at its centre where another charge −q is placed is √nqRπ. Then the value of n is (answer upto two decimal places)
Answer» The dipole moment of a system of charge + q distributed uniformly on an arc of radius R subtending an angle $π / 2$ at its centre where another charge $- q$ is placed is $\frac{\sqrt{n} q R}{π}$ . Then the value of $n$ is (answer upto two decimal places)

Discussion

50.	The following cyclic polymerization is called
Answer» The following cyclic polymerization is called

50.

The following cyclic polymerization is called

Answer»

The following cyclic polymerization is called

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Which is main product in the reaction of but 1 - yne with an excess of hydrogen chloride?

osmotic pressure of 18% solution of glucose at 27 c

57. The rate equation for an autocatalytic reaction A + R = R + R is -d[A]/dt = k[A][R] Prove that when the rate of disappearance of reactant A is maximum then [A]=[R]

WEhat in markonikoff;s reaction?

'h' represent the height of the HCP unit cell and 'a' represent edge length of the hexagonal surface of the HCP unit cell. What is the value of h/a?

Inwhich one of the following case breaking of covalent bond takes place?

A uniform cubical block of side 2m and density 0.2 g/cc is fixed to the horizontal floor as shown in figure. A force 5 kN is applied on the top face of the cube, then

A CIRCULAR DISC X OF RADIUS R IS MADE FROM AN IRON PLATE OF THICKNESS t AND ANOTHER DISC Y OF RADIUS 4R IS MADE FROM AN IRON PLATE OF THICKNESS t/4 .FIND THE RELATION BETWEEN THE MOMENT OF INERTIA IX AND IY ?

What is meant when it is said that this natural process occurs in a particular direction ?

ntWhat is the meaning of this line: in case of phosphorous nearly all intermediate oxidation states disproportionate into +5 and -3 both in alkali and acidn

The Bakelite is made from phenol and formaldehyde. The initial reaction between the two compounds is an example of

100 Calculate the no. Of aluminum ions in 0. 051g of aluminum oxide

Choose the correct order for the boiling points of amines:

what is the energy of nTH type orbital?

Which of the following is true for calcination of a metal ore?

For the water gas reaction: C(s)+H2O(g)⇌CO(g)+H2(g),the standard Gibbs energy of reaction (at 1000 K) is −8.1 kJ mol−1. What will be the equilibrium constant for the reaction? log 2.648=0.4229

What is the trend of solubility of carbonates down the group? Also give the order of solubility for group 2 carbonates

Do all metals possess a closed packed structure ? Name the different structures exhibited and give their packing fractions

, explain that equilibrium constant is actually unit less?

Asolution which is 10-3 M each in Mn2+, Fe2+,Zn2+ and Hg2+ is treated with 10-16 M sulphideion. If Ksp of MnS, FeS, ZnS and HgS are 10-15, 10-23,10-20 and 10-54 respectively, which one will precipitatefirst?

Write down the concentration of 2g NaOH in 50ml solution in g/L and mol/L.

Calculate the volume of water to be added to 400ml of semi normal HCL solution to make it decinormal

Differentiate y= (x)^x

Smoke is an example of

How to find n factors of reaction??

Q 36/90 100 ml of 0.2 M Na2SO4 solution is mixedwith 400 ml of 0.1 M Al2(SO4)3 solution. The molarconcentration of SO42 ion in the final solution is

2. Which of the following alkane upon dichlorination can give only two products? 1-Propane 2-methane 3-2,2-dimethylpropane 4-cyclohexane

In which of the following compounds Cl has the oxidation state of +1 ?

What is electron pool Metallic solid Positive kernels and mobile electron

Reaction of ch3coch2ch3 with peracid m cpba gives

Which of the following statement is not true for halogens 1)chlorine has highest electron gain enthalphy 2)all forms monobasic oxyacids 3)all but flourine shows positive oxidation states 4)all are oxidising agents

35 If 1 mol of CH3COOH and 1mol of C2H5OH are mixed and the reaction proceeds to equilibrium, the conc. of CH3COOH and H2O are found to be 1/3 and 2/3 mol respectively. If 1 mol of ethyl acetate and 3 moles of water are mixed, how much ester is present when equilibrium is reached?

The strongest acid amongst the following compounds is

If the number of electrons present in 1990 mg of perchlorate ion is a×1023 then the value of ‘a′ would be? Give your answer upto two decimal only. (Given NA=6.02×1023, molar mass of Cl=35.5 g)

Why is CH3 reffered as electron donating group ? please explain..

Find the weight of NaNO3 in grams (Rounded off to nearest integer), required to make 50 mL of an aqueous solution containing 70 mg per mL of Na+ ions [Given:Atomic weight in gmol−1[Na:23;N:14;O:16]

11. what are the symbols and formulae for : 1. molar conductance 2. specific conductance 3. equivalent conductance 4. electrical conductance

39 What is tetrahedral voids and octahedral voids?

The correct order of IP1 is

The wavelength associated with a golf ball weighing 200g and moving at a speed of 5m/h is of the order

Why does tautomerism take place?

In the given conversion, the best yield will be obtained with:

1litre of O​​​​​​2 at STP is made to react with 3litre of carbon monoxide at STP . Calculate the mass of each substance formed after the reaction?

Which of the following is not the correct increasing order of ionization energy?

The pH of 0.2 M HCN is 4.2, the value of Ka for HCN is 1.99x10^-x. calculate the value of x.

why alkyl free radical is more stable than viny

The dipole moment of a system of charge + q distributed uniformly on an arc of radius R subtending an angle π/2 at its centre where another charge −q is placed is √nqRπ. Then the value of n is (answer upto two decimal places)

The following cyclic polymerization is called

1litre of O2 at STP is made to react with 3litre of carbon monoxide at STP . Calculate the mass of each substance formed after the reaction?