46295 + Interview Questions in Chemistry

1.	If L and C denote inductance and capacitance, then find the dimensions of L-C.
Answer» If L and C denote inductance and capacitance, then find the dimensions of L-C.

Discussion

2.	In a sample of hydrogen atoms, transition of electrons take place from the 5th excited state to the ground state producing all possible types of photons. The number of lines in the infrared region is:
Answer» In a sample of hydrogen atoms, transition of electrons take place from the $5^{t h}$ excited state to the ground state producing all possible types of photons. The number of lines in the infrared region is:

Discussion

3.	On reaction of MeMgBr with HCN , the product will be methane or acetaldehyde ?
Answer» On reaction of MeMgBr with HCN , the product will be methane or acetaldehyde ?

Discussion

4.	A mixture of pure Agcl and Agbr contai s 60.94% Ag by mass . What is the % of Agcl in the sample ?
Answer» A mixture of pure Agcl and Agbr contai s 60.94% Ag by mass . What is the % of Agcl in the sample ?

Discussion

5.	why in benzyne the electrons of triplet bond cannot participate in resonance?
Answer» why in benzyne the electrons of triplet bond cannot participate in resonance?

Discussion

6.	57. Calculate the frequency and wavelength of the energy emitted when the electron jumps from 4th orbit to 1st orbit of a H-atom.
Answer» 57. Calculate the frequency and wavelength of the energy emitted when the electron jumps from 4th orbit to 1st orbit of a H-atom.

Discussion

7.	Discuss in detial the shape of S-orbital , p-orbital and d- orbital?
Answer» Discuss in detial the shape of S-orbital , p-orbital and d- orbital?

Discussion

8.	The equilibrium expression, K = [Ag+][Cl–] describes the reaction:
Answer» The equilibrium expression, K = [Ag⁺][Cl^–] describes the reaction:

Discussion

9.	by which experiment was a protons charge calculated?
Answer» by which experiment was a protons charge calculated?

Discussion

10.	At room temperature (27∘C) the rms speed of the molecules of a certain diatomic gas is found to be 1920 ms−1. The gas is
Answer» At room temperature $(27^{\circ} C)$ the rms speed of the molecules of a certain diatomic gas is found to be $1920 m s^{- 1}$ . The gas is

Discussion

11.	Hydrogen peroxide cannot oxidize
Answer» Hydrogen peroxide cannot oxidize

Discussion

12.	Name the parent alkane of CH3OH.
Answer» Name the parent alkane of $C H_{3} O H .$

Discussion

13.	Cryolite is added to alumina to reduce its:
Answer» Cryolite is added to alumina to reduce its:

Discussion

14.	Oxidation state of Fe in Fe3O4 is:
Answer» Oxidation state of $F e$ in $F e_{3} O_{4}$ is:

Discussion

15.	In certain reaction, 10% of the reactant decomposes in one hour, 20% in two hours, 30% in three hours and so on. The dimensions of the rate constant is
Answer» In certain reaction, 10% of the reactant decomposes in one hour, 20% in two hours, 30% in three hours and so on. The dimensions of the rate constant is

Discussion

16.	To what volume one litre of 0.1M acetic acid solution diluted so that the pH of the solution becomes double of the initial ? ( Ka=1.8×10−5)
Answer» To what volume one litre of 0.1M acetic acid solution diluted so that the pH of the solution becomes double of the initial ? ( $K_{a} = 1.8 \times 10^{- 5}$ )

Discussion

17.	Which of the following compounds will not give a positive test with Tollens' reagent?
Answer» Which of the following compounds will not give a positive test with Tollens' reagent?

Discussion

18.	bond dissociation energy of XY ,X2 and y2 (all diatomic molecules) are in the ratio 0f 1:1:0.5 and \bigtriangleup H_f of XY is -200 KJ mol^{-1} the bond dissociation energy of X2 will be
Answer» bond dissociation energy of XY ,X2 and y2 (all diatomic molecules) are in the ratio 0f 1:1:0.5 and \bigtriangleup H_f of XY is -200 KJ mol^{-1} the bond dissociation energy of X2 will be

Discussion

19.	An ideal gas having initial pressure P, volume V and temperature T is allowed to expand reversibly and adiabatically until its volume becomes 5.66 V, while its temperature decreases to T2. Work done by the gas during expansion is given by W=−X PV. Find the value of X. (given (5.66)0.4=2) Report the answer upto two decimals
Answer» An ideal gas having initial pressure P, volume V and temperature T is allowed to expand reversibly and adiabatically until its volume becomes 5.66 V, while its temperature decreases to $\frac{T}{2}$ . Work done by the gas during expansion is given by $W = - X P V$ . Find the value of $X$ . (given $(5.66)^{0.4} = 2$ ) Report the answer upto two decimals

Discussion

20.	49, 0.5g of a metal on oxidation gave 0.79g of itsoxide. The equivalent mass of the metal is1) 102) 143) 204) 40
Answer» 49, 0.5g of a metal on oxidation gave 0.79g of itsoxide. The equivalent mass of the metal is1) 102) 143) 204) 40

Discussion

21.	Equal weights of methane and oxygen are mixed in an empty container at 25oC. The fraction of the total pressure exerted by oxygen is (IIT-JEE, 1981)
Answer» Equal weights of methane and oxygen are mixed in an empty container at $25^{o} C .$ The fraction of the total pressure exerted by oxygen is (IIT-JEE, 1981)

Discussion

22.	Which particular process was used by Meselson and Franklin in order to study the semi-conservative replication of DNA?
Answer» Which particular process was used by Meselson and Franklin in order to study the semi-conservative replication of DNA?

Discussion

23.	Reaction between diethyl cadmium and acetyl chloride leads to the formation of
Answer» Reaction between diethyl cadmium and acetyl chloride leads to the formation of

Discussion

24.	Is it so that two different element will form a molecule or many atoms of same element can also form a molecule
Answer» Is it so that two different element will form a molecule or many atoms of same element can also form a molecule

Discussion

25.	Neopentylbromide react with CH_3O^- major product will be, it will give E1(unimolecular elimination or E2 reactio
Answer» Neopentylbromide react with CH_3O^- major product will be, it will give E1(unimolecular elimination or E2 reactio

Discussion

26.	Two ideal polyatomic gases at temperatures T1 and T2 are mixed so that there is no loss of energy. If (f1,f2), (m1,m2), and (n1,n2) be the degrees of freedom, masses and number of molecules of the first and second gas respectively, then the temperature of the mixture of these two gases will be -
Answer» Two ideal polyatomic gases at temperatures $T_{1}$ and $T_{2}$ are mixed so that there is no loss of energy. If $(f_{1}, f_{2})$ , $(m_{1}, m_{2})$ , and $(n_{1}, n_{2})$ be the degrees of freedom, masses and number of molecules of the first and second gas respectively, then the temperature of the mixture of these two gases will be -

Discussion

27.	Give reason why a finely divided substance is more effective as an adsorbent.
Answer» Give reason why a finely divided substance is more effective as an adsorbent.

Discussion

28.	two source are placed in horizantal axis by gapping distance d .then fringes in the screen
Answer» two source are placed in horizantal axis by gapping distance d .then fringes in the screen

Discussion

29.	Calculate the amount of heat energy released when 50 g of water at 90 °C cooled down to 60 °C.
Answer» Calculate the amount of heat energy released when 50 g of water at 90 °C cooled down to 60 °C.

Discussion

30.	Compare the chemistry of the actinoids with that of lanthanoids with reference to: (i) electronic configuration (ii) oxidation states and (iii) chemical reactivity.
Answer» Compare the chemistry of the actinoids with that of lanthanoids with reference to: (i) electronic configuration (ii) oxidation states and (iii) chemical reactivity.

30.

Compare the chemistry of the actinoids with that of lanthanoids with reference to: (i) electronic configuration (ii) oxidation states and (iii) chemical reactivity.

Answer»

Compare
the chemistry of the actinoids with that of lanthanoids with
reference to:

(i) electronic
configuration

(ii) oxidation
states and

(iii) chemical
reactivity.

Discussion

31.	The hybridizations of the cation and the anion respectively, when PCl5 exists as a solid are:
Answer» The hybridizations of the cation and the anion respectively, when $P C l_{5}$ exists as a solid are:

Discussion

32.	In coordination complexes, only coordinate bonds form between ligands and central metal atoms.right?When a compound is said to be a coordination compound?what is the basic elegibilty criteria for a compound to be a coordination compound?
Answer» In coordination complexes, only coordinate bonds form between ligands and central metal atoms.right? When a compound is said to be a coordination compound?what is the basic elegibilty criteria for a compound to be a coordination compound?

Discussion

33.	Which of the following is an electrophilic substitution reaction?
Answer» Which of the following is an electrophilic substitution reaction?

Discussion

34.	A boat takes 2 hour to go 8km down and back when river is stationary. Now river flows at 4kmph. How much time the boat will take in the same trip?
Answer» A boat takes 2 hour to go 8km down and back when river is stationary. Now river flows at 4kmph. How much time the boat will take in the same trip?

Discussion

35.	0.5 kg of a metal carbonate gives 0.28 kg of its oxide on heating. The equivalent weight of the metal is:
Answer» $0.5 kg$ of a metal carbonate gives $0.28 kg$ of its oxide on heating. The equivalent weight of the metal is:

Discussion

36.	1/2-12 112The correct set of quantum numbers for the unpaired electron of F atom is (1) 2, 0, 0, 1/2 (2) 2, 0, 1 1/2 ( 3) 3, 1, 1, +1/2 (4) 2, 1, 1, +1/
Answer» 1/2-12 112The correct set of quantum numbers for the unpaired electron of F atom is (1) 2, 0, 0, 1/2 (2) 2, 0, 1 1/2 ( 3) 3, 1, 1, +1/2 (4) 2, 1, 1, +1/

Discussion

37.	Leucine is a/an ________ amino acid.
Answer» Leucine is a/an ________ amino acid.

Discussion

38.	A and B respectively are:
Answer» A and B respectively are:

Discussion

39.	Which is having easeness to form ionic bond- NaCl or CsCl?What happens to easeness of forming ionic bond when lattice enthalpy increases? Explain with the help of NaCl and CsCl.
Answer» Which is having easeness to form ionic bond- NaCl or CsCl? What happens to easeness of forming ionic bond when lattice enthalpy increases? Explain with the help of NaCl and CsCl.

Discussion

40.	The electrophile in sulphonation of benzene using fuming sulphuric acid is:
Answer» The electrophile in sulphonation of benzene using fuming sulphuric acid is:

Discussion

41.	Silver (atomic weight = 108 g mol−1) has a density of 10.5 g cm−3. The number of silver atoms on a surface of area 10−12m2 can be expressed in scientific notation as y×10x. The value of x is
Answer» Silver (atomic weight = 108 g $m o l^{- 1}$ ) has a density of 10.5 g $c m^{- 3}$ . The number of silver atoms on a surface of area $10^{- 12} m^{2}$ can be expressed in scientific notation as $y \times 10^{x}$ . The value of x is

Discussion

42.	The ratio of masses of oxygen and nitrogen in a particular gaseous mixture is 1:4. Their ratio of number of molecules is:
Answer» The ratio of masses of oxygen and nitrogen in a particular gaseous mixture is $1 : 4$ . Their ratio of number of molecules is:

Discussion

43.	8. EAN of metal in any monometallic carbonyl complex remains same when :- (1) three carbonyls (CO) ligands are replaced by two nitrosyl (NO) ligands (2) two carbonyls ligands are replaced by three nitrosyl ligands (3) all the carbonyls ligands are replaced by all nitrosyl ligands (4) one carbonyl ligand is replaced by three nitrosyl ditrosy ligands
Answer» 8. EAN of metal in any monometallic carbonyl complex remains same when :- (1) three carbonyls (CO) ligands are replaced by two nitrosyl (NO) ligands (2) two carbonyls ligands are replaced by three nitrosyl ligands (3) all the carbonyls ligands are replaced by all nitrosyl ligands (4) one carbonyl ligand is replaced by three nitrosyl ditrosy ligands

Discussion

44.	Separation of mixture into a thin layer of adsorbent is known as:
Answer» Separation of mixture into a thin layer of adsorbent is known as:

Discussion

45.	What happens when phenols reacts with trtracloromethane
Answer» What happens when phenols reacts with trtracloromethane

Discussion

46.	A pausa coin is made up of Al-mg alloy and weights 0.75g.It has a square shape and its diagonal measurs 17mm.It is electrically neutral and contains equal amounts of positive and negative charges. Treating the paisa coins made up of only Al,the magnitude of equal number of positive and negative charges i
Answer» A pausa coin is made up of Al-mg alloy and weights 0.75g.It has a square shape and its diagonal measurs 17mm.It is electrically neutral and contains equal amounts of positive and negative charges. Treating the paisa coins made up of only Al,the magnitude of equal number of positive and negative charges i

Discussion

47.	64 What is difference between sec-buty,tert-butyl and iso-butyl
Answer» 64 What is difference between sec-buty,tert-butyl and iso-butyl

Discussion

48.	A metallic carbide on treatment with water gives a colourless gas which burns readily in air and which gives a precipitate with ammoniacal silver nitrate solution. Gas evolved is
Answer» A metallic carbide on treatment with water gives a colourless gas which burns readily in air and which gives a precipitate with ammoniacal silver nitrate solution. Gas evolved is

Discussion

49.	Which one of the following oxoanions does not contain S−S or S=S bond?
Answer» Which one of the following oxoanions does not contain $S - S$ or $S = S$ bond?

Discussion

50.	Which of the following is the most acidic compound?
Answer» Which of the following is the most acidic compound?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

If L and C denote inductance and capacitance, then find the dimensions of L-C.

In a sample of hydrogen atoms, transition of electrons take place from the 5th excited state to the ground state producing all possible types of photons. The number of lines in the infrared region is:

On reaction of MeMgBr with HCN , the product will be methane or acetaldehyde ?

A mixture of pure Agcl and Agbr contai s 60.94% Ag by mass . What is the % of Agcl in the sample ?

why in benzyne the electrons of triplet bond cannot participate in resonance?

57. Calculate the frequency and wavelength of the energy emitted when the electron jumps from 4th orbit to 1st orbit of a H-atom.

Discuss in detial the shape of S-orbital , p-orbital and d- orbital?

The equilibrium expression, K = [Ag+][Cl–] describes the reaction:

by which experiment was a protons charge calculated?

At room temperature (27∘C) the rms speed of the molecules of a certain diatomic gas is found to be 1920 ms−1. The gas is

Hydrogen peroxide cannot oxidize

Name the parent alkane of CH3OH.

Cryolite is added to alumina to reduce its:

Oxidation state of Fe in Fe3O4 is:

In certain reaction, 10% of the reactant decomposes in one hour, 20% in two hours, 30% in three hours and so on. The dimensions of the rate constant is

To what volume one litre of 0.1M acetic acid solution diluted so that the pH of the solution becomes double of the initial ? ( Ka=1.8×10−5)

Which of the following compounds will not give a positive test with Tollens' reagent?

bond dissociation energy of XY ,X2 and y2 (all diatomic molecules) are in the ratio 0f 1:1:0.5 and \bigtriangleup H_f of XY is -200 KJ mol^{-1} the bond dissociation energy of X2 will be

49, 0.5g of a metal on oxidation gave 0.79g of itsoxide. The equivalent mass of the metal is1) 102) 143) 204) 40

Equal weights of methane and oxygen are mixed in an empty container at 25oC. The fraction of the total pressure exerted by oxygen is (IIT-JEE, 1981)

Which particular process was used by Meselson and Franklin in order to study the semi-conservative replication of DNA?

Reaction between diethyl cadmium and acetyl chloride leads to the formation of

Is it so that two different element will form a molecule or many atoms of same element can also form a molecule

Neopentylbromide react with CH_3O^- major product will be, it will give E1(unimolecular elimination or E2 reactio

Two ideal polyatomic gases at temperatures T1 and T2 are mixed so that there is no loss of energy. If (f1,f2), (m1,m2), and (n1,n2) be the degrees of freedom, masses and number of molecules of the first and second gas respectively, then the temperature of the mixture of these two gases will be -

Give reason why a finely divided substance is more effective as an adsorbent.

two source are placed in horizantal axis by gapping distance d .then fringes in the screen

Calculate the amount of heat energy released when 50 g of water at 90 °C cooled down to 60 °C.

Compare the chemistry of the actinoids with that of lanthanoids with reference to: (i) electronic configuration (ii) oxidation states and (iii) chemical reactivity.

The hybridizations of the cation and the anion respectively, when PCl5 exists as a solid are:

In coordination complexes, only coordinate bonds form between ligands and central metal atoms.right?When a compound is said to be a coordination compound?what is the basic elegibilty criteria for a compound to be a coordination compound?

Which of the following is an electrophilic substitution reaction?

A boat takes 2 hour to go 8km down and back when river is stationary. Now river flows at 4kmph. How much time the boat will take in the same trip?

0.5 kg of a metal carbonate gives 0.28 kg of its oxide on heating. The equivalent weight of the metal is:

1/2-12 112The correct set of quantum numbers for the unpaired electron of F atom is (1) 2, 0, 0, 1/2 (2) 2, 0, 1 1/2 ( 3) 3, 1, 1, +1/2 (4) 2, 1, 1, +1/

Leucine is a/an ________ amino acid.

A and B respectively are:

Which is having easeness to form ionic bond- NaCl or CsCl?What happens to easeness of forming ionic bond when lattice enthalpy increases? Explain with the help of NaCl and CsCl.

The electrophile in sulphonation of benzene using fuming sulphuric acid is:

Silver (atomic weight = 108 g mol−1) has a density of 10.5 g cm−3. The number of silver atoms on a surface of area 10−12m2 can be expressed in scientific notation as y×10x. The value of x is

The ratio of masses of oxygen and nitrogen in a particular gaseous mixture is 1:4. Their ratio of number of molecules is:

Separation of mixture into a thin layer of adsorbent is known as:

What happens when phenols reacts with trtracloromethane

64 What is difference between sec-buty,tert-butyl and iso-butyl

A metallic carbide on treatment with water gives a colourless gas which burns readily in air and which gives a precipitate with ammoniacal silver nitrate solution. Gas evolved is

Which one of the following oxoanions does not contain S−S or S=S bond?

Which of the following is the most acidic compound?