46295 + Interview Questions in Chemistry

1.	7. Hco3- and co3 2- can be separated by (a) phenolpthalein (b) mgcl2 solution (c) hgcl2 solution (d) kcl solution
Answer» 7. Hco3- and co3 2- can be separated by (a) phenolpthalein (b) mgcl2 solution (c) hgcl2 solution (d) kcl solution

Discussion

2.	For the reaction, 2NH3(g)⇌N2(g)+3H2(g), the units of Kp will be.
Answer» For the reaction, $2 N H_{3} (g) ⇌ N_{2} (g) + 3 H_{2} (g),$ the units of $K_{p}$ will be.

Discussion

3.	9. Loga/b-c =logb/c-a = logc/a-b then a+b+c =
Answer» 9. Loga/b-c =logb/c-a = logc/a-b then a+b+c =

Discussion

4.	D(+) - glucose reacts with hydroxyl amine and yields an oxime. The structure of the oxime would be
Answer» D(+) - glucose reacts with hydroxyl amine and yields an oxime. The structure of the oxime would be

Discussion

5.	what is alphatic acid?
Answer» what is alphatic acid?

Discussion

6.	Maximum number of atoms are present in18 g H₂O20 g NaOH44 g CO220 g H₂
Answer» Maximum number of atoms are present in 18 g H₂O 20 g NaOH 44 g CO2 20 g H₂

Discussion

7.	Arrange the following steps involved in metallurgy in correct order. Reduction to metal, crushing and grinding, concentration of ore, conversion to oxide
Answer» Arrange the following steps involved in metallurgy in correct order. Reduction to metal, crushing and grinding, concentration of ore, conversion to oxide

Discussion

8.	An atom contains only three shells. If the number ofelectrons present in its first shell is 2 and in second shell is 8, then the maximum number of electrons that can be accommodated in its third shell will be
Answer» An atom contains only three shells. If the number ofelectrons present in its first shell is 2 and in second shell is 8, then the maximum number of electrons that can be accommodated in its third shell will be

Discussion

9.	Mr. Samwell Tarly has to learn Chemistry to become a Maester. He is stuck with Kinetics. Will you help him? (Maester is just Master in their language)Choose the appropriate definition of rate constant.
Answer» Mr. Samwell Tarly has to learn Chemistry to become a Maester. He is stuck with Kinetics. Will you help him? (Maester is just Master in their language) Choose the appropriate definition of rate constant.

9.

Mr. Samwell Tarly has to learn Chemistry to become a Maester. He is stuck with Kinetics. Will you help him? (Maester is just Master in their language)Choose the appropriate definition of rate constant.

Answer»

Mr. Samwell Tarly has to learn Chemistry to become a Maester. He is stuck with Kinetics. Will you help him?

(Maester is just Master in their language)

Choose the appropriate definition of rate constant.

Discussion

10.	Among the following, the reaction that proceeds through an electrophilic substitution is:
Answer» Among the following, the reaction that proceeds through an electrophilic substitution is:

Discussion

11.	Volume ar NTP of oxygen required to completely burn 1kg of coal
Answer» Volume ar NTP of oxygen required to completely burn 1kg of coal

Discussion

12.	A solution of A (MM=20) and B(MM=10),(mole fraction of XB=0.6) having density 0.7gm/ml then molarity and molality of B in the solution will be
Answer» A solution of A (MM=20) and B(MM=10),(mole fraction of XB=0.6) having density 0.7gm/ml then molarity and molality of B in the solution will be

Discussion

13.	if k3(fe(cn)6) gets ionized completely in s solution no. of particles in the solution from 1 molecule solute is
Answer» if k3(fe(cn)6) gets ionized completely in s solution no. of particles in the solution from 1 molecule solute is

Discussion

14.	Tetraaminecopper(II) ion is a square planar complex with one unpaired electron. According to valence bond theory the hybrid state of copper should be
Answer» Tetraaminecopper(II) ion is a square planar complex with one unpaired electron. According to valence bond theory the hybrid state of copper should be

Discussion

15.	At critical set of condition the value of compressibility factor is 1.5x the value of 'x' is:
Answer» At critical set of condition the value of compressibility factor is $\frac{1.5}{x}$ the value of ' $x$ ' is:

Discussion

16.	The normality of 6M H3PO4 solution
Answer» The normality of 6M H₃PO₄ solution

Discussion

17.	If the role of a "catalyst" is to increase the rate of the reaction then why is there a "negative catalyst" which decreases the rate of reaction? How are they even helpful if they lead to delay in reactions?
Answer» If the role of a "catalyst" is to increase the rate of the reaction then why is there a "negative catalyst" which decreases the rate of reaction? How are they even helpful if they lead to delay in reactions?

Discussion

18.	82 Why is (Ph)3C' free radical less stable than allyl free radical?
Answer» 82 Why is (Ph)3C' free radical less stable than allyl free radical?

Discussion

19.	Homolytic fission of C - C bond in ethane gives an intermediate in which carbon is
Answer» Homolytic fission of C - C bond in ethane gives an intermediate in which carbon is

Discussion

20.	what is phorone
Answer» what is phorone

Discussion

21.	A fuel cell develops an electrical potential form the combustion of butane at 1 bar and 298 KC4H10(g)+6.5O2(g)→4CO2(g)+5H2O(l): ΔrG∘=−2746 kJ/mol What is Eo (in volts) of cell? ( Give your answer upto two decimal only)
Answer» A fuel cell develops an electrical potential form the combustion of butane at 1 bar and 298 K $C_{4} H_{10} (g) + 6.5 O_{2} (g) \to 4 C O_{2} (g) + 5 H_{2} O (l) : Δ_{r} G^{\circ} = - 2746 kJ/mol$ What is $E^{o}$ (in volts) of cell? ( Give your answer upto two decimal only)

Discussion

22.	If the sequence of bases in DNA is ATTCGATG then the sequence of bases in its transcript will be
Answer» If the sequence of bases in DNA is ATTCGATG then the sequence of bases in its transcript will be

Discussion

23.	Arrange the following in decreasing order of their basic strength:C6H5NH2,C2H5NH2,(C2H5)2NH,NH3
Answer» Arrange the following in decreasing order of their basic strength: $C_{6} H_{5} N H_{2}, C_{2} H_{5} N H_{2}, (C_{2} H_{5})_{2} N H, N H_{3}$

Discussion

24.	Which of the following is the most correct electron displacement for a nucleophilic reaction to take place?
Answer» Which of the following is the most correct electron displacement for a nucleophilic reaction to take place?

Discussion

25.	At 298 K the standard free energy of formation of H2O(l) is −257.20 kJ/mole while that of its ionization into H+ ion and hydroxyl ions is 80.35 kJ/mole. Then the emf of the following cell at 298 K will be (take F=96500 C):H2(g, 1 bar)\|H+(1M)\|\|OH−(1M)\|O2(g, 1 bar)
Answer» At $298 K$ the standard free energy of formation of $H_{2} O (l)$ is $- 257.20 kJ/mole$ while that of its ionization into $H^{+}$ ion and hydroxyl ions is $80.35 kJ/mole$ . Then the emf of the following cell at $298 K$ will be $(take F = 96500 C)$ : $H_{2} (g, 1 bar) \| H^{+} (1 M) \| \| O H^{-} (1 M) \| O_{2} (g, 1 bar)$

Discussion

26.	qAB=2kJ/molΔUBC=−5kJ/molWAB=−5kJ/molWCA=3kJ/molHeat absorbed by the system during process CA is:
Answer» $q_{A B} = 2 k J / m o l Δ U_{B C} = - 5 k J / m o l W_{A B} = - 5 k J / m o l W_{C A} = 3 k J / m o l$ Heat absorbed by the system during process CA is:

Discussion

27.	What quantity of (NH4)SO2 is necessary for the production of NH3 gas sufficient to neutralize a solution containing 292 g of HCl
Answer» What quantity of (NH4)SO2 is necessary for the production of NH3 gas sufficient to neutralize a solution containing 292 g of HCl

Discussion

28.	For the reaction, CO(g)+Cl2(g)⇌COCl2(g) the KpKc is equal to
Answer» For the reaction, $C O (g) + C l_{2} (g) ⇌ C O C l_{2} (g)$ the $\frac{K_{p}}{K_{c}}$ is equal to

Discussion

29.	2.8 g of calcium oxide prepared by heating limestone produced 0.8 g of oxygen. Calculate the mass percentage of calcium.
Answer» 2.8 g of calcium oxide prepared by heating limestone produced 0.8 g of oxygen. Calculate the mass percentage of calcium.

Discussion

30.	What are main concept s in vectors for her mains to get good marks
Answer» What are main concept s in vectors for her mains to get good marks

Discussion

31.	Why is water diamagnetic
Answer» Why is water diamagnetic

Discussion

32.	What would be the IUPAC name of the compound shown below?
Answer» What would be the IUPAC name of the compound shown below?

32.

What would be the IUPAC name of the compound shown below?

Answer»

What would be the IUPAC name of the compound shown below?

Discussion

33.	17. At 27^° C a motor car tyre has pressure of 2 atmosphere.Find the temperature, if the tyre suddenly bursts.(Given, Yair 14)a. 24.1 K b. 250 KC. 246.1Kd, 248 K
Answer» 17. At 27^° C a motor car tyre has pressure of 2 atmosphere.Find the temperature, if the tyre suddenly bursts.(Given, Yair 14)a. 24.1 K b. 250 KC. 246.1Kd, 248 K

Discussion

34.	do we have to learn the whole electromagnetic spectrum?
Answer» do we have to learn the whole electromagnetic spectrum?

Discussion

35.	The ionization isomer of [Cr(H2O)4Cl(NO2)]Cl is
Answer» The ionization isomer of $[C r (H_{2} O)_{4} C l (N O_{2})] C l$ is

Discussion

36.	Why co2 is non polar molecules but h2o is polar
Answer» Why co2 is non polar molecules but h2o is polar

Discussion

37.	16. Evaluate: lim x -> 0 (cos2x - cos3x)/cos4x-1.
Answer» 16. Evaluate: lim x -> 0 (cos2x - cos3x)/cos4x-1.

Discussion

38.	How to identify electrophiles and nucleophiles?
Answer» How to identify electrophiles and nucleophiles?

Discussion

39.	The following chemical equation represents a reaction: Mg(s)+2HCl(aq)→MgCl2(aq)+H2(g) How many grams of the excess reactant will be left over in the reaction when 6 g of HCl is made to react with 5 g of Mg?
Answer» The following chemical equation represents a reaction: $M g (s) + 2 H C l (a q) \to M g C l_{2} (a q) + H_{2} (g)$ How many grams of the excess reactant will be left over in the reaction when $6 g$ of $H C l$ is made to react with $5 g$ of $M g$ ?

Discussion

40.	27. Which is the 1) typical 2) bridge element in modern periodic table ?
Answer» 27. Which is the 1) typical 2) bridge element in modern periodic table ?

Discussion

41.	In the above reaction, 3.9 g of benzene on nitration gives 4.92 g of nitrobenzene. The percentage yield of nitrobenzene in the above reaction is ______% ( Round off to the Nearest Integer).Given atomic mass: C:12.0 u, H :1.0 u, O : 16.0 u, N : 14. 0 u)
Answer» In the above reaction, $3.9 g$ of benzene on nitration gives $4.92 g$ of nitrobenzene. The percentage yield of nitrobenzene in the above reaction is ______% ( Round off to the Nearest Integer). Given atomic mass: C:12.0 u, H :1.0 u, O : 16.0 u, N : 14. 0 u)

Discussion

42.	Lthium metal crystallises in a body centred cubic crystal. If the length of the side of the unit cell of lithium is 351 pm, the atomic radius of the lithium will be:(√3=1.7)
Answer» Lthium metal crystallises in a body centred cubic crystal. If the length of the side of the unit cell of lithium is $351 pm$ , the atomic radius of the lithium will be: ( $\sqrt{3} = 1.7$ )

Discussion

43.	KF crystallizes in NaCl structure.If edge length is 400pm find the nearest distance between K+ and F-?
Answer» KF crystallizes in NaCl structure.If edge length is 400pm find the nearest distance between K+ and F-?

Discussion

44.	what is beta decay? How nucleus releases an electron?What is pions?
Answer» what is beta decay? How nucleus releases an electron? What is pions?

Discussion

45.	Match the following:Column IColumn II(1). Non−polar Molecular solids(i) Coulombic or electrostaticforces(2). H−Bonded Molecular solids(ii). H−bonding(3). Ionic solids(iii). Metallic bonding(4). Weak dispersion forces(iv). Weak dispersion forces(5). Metallic solids(v). dipole–dipole interaction.(vi). covalent Bonding.
Answer» Match the following: $\begin{matrix} C o l u m n I & C o l u m n I I (1) . N o n - p o l a r M o l e c u l a r s o l i d s & (i) C o u l o m b i c o r e l e c t r o s t a t i c f o r c e s (2) . H - B o n d e d M o l e c u l a r s o l i d s & (i i) . H - b o n d i n g (3) . I o n i c s o l i d s & (i i i) . M e t a l l i c b o n d i n g (4) . W e a k d i s p e r s i o n f o r c e s & (i v) . W e a k d i s p e r s i o n f o r c e s (5) . M e t a l l i c s o l i d s & (v) . d i p o l e - d i p o l e i n t e r a c t i o n . (v i) . c o v a l e n t B o n d i n g . \end{matrix}$

45.

Match the following:Column IColumn II(1). Non−polar Molecular solids(i) Coulombic or electrostaticforces(2). H−Bonded Molecular solids(ii). H−bonding(3). Ionic solids(iii). Metallic bonding(4). Weak dispersion forces(iv). Weak dispersion forces(5). Metallic solids(v). dipole–dipole interaction.(vi). covalent Bonding.

Answer»

Match the following:

$\begin{matrix} C o l u m n I & C o l u m n I I (1) . N o n - p o l a r M o l e c u l a r s o l i d s & (i) C o u l o m b i c o r e l e c t r o s t a t i c f o r c e s (2) . H - B o n d e d M o l e c u l a r s o l i d s & (i i) . H - b o n d i n g (3) . I o n i c s o l i d s & (i i i) . M e t a l l i c b o n d i n g (4) . W e a k d i s p e r s i o n f o r c e s & (i v) . W e a k d i s p e r s i o n f o r c e s (5) . M e t a l l i c s o l i d s & (v) . d i p o l e - d i p o l e i n t e r a c t i o n . (v i) . c o v a l e n t B o n d i n g . \end{matrix}$

Discussion

46.	Distinguish between the terms homopolymer and copolymer and give an example of each.
Answer» Distinguish between the terms homopolymer and copolymer and give an example of each.

Discussion

47.	How can washing soda be obtained from baking soda? Discuss uses of washing soda.
Answer» How can washing soda be obtained from baking soda? Discuss uses of washing soda.

Discussion

48.	How is the variability in oxidation states of transition metals different from that of the non-transition metals? Illustrate with examples.
Answer» How is the variability in oxidation states of transition metals different from that of the non-transition metals? Illustrate with examples.

48.

How is the variability in oxidation states of transition metals different from that of the non-transition metals? Illustrate with examples.

Answer»

How is the
variability in oxidation states of transition metals different from

that
of the non-transition metals? Illustrate
with examples.

Discussion

49.	15. In a crystalline solid , particle C is packed in cubic close packing , particle A is at 25% of tetrahedral voids and particle B is at 50% of octahedral voids .if the particles along one of the face diagonal are removed , then simplest formula of the compound is ?
Answer» 15. In a crystalline solid , particle C is packed in cubic close packing , particle A is at 25% of tetrahedral voids and particle B is at 50% of octahedral voids .if the particles along one of the face diagonal are removed , then simplest formula of the compound is ?

Discussion

50.	Which of the following is incorrect regarding minimum boiling azeotropes?
Answer» Which of the following is incorrect regarding minimum boiling azeotropes?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

7. Hco3- and co3 2- can be separated by (a) phenolpthalein (b) mgcl2 solution (c) hgcl2 solution (d) kcl solution

For the reaction, 2NH3(g)⇌N2(g)+3H2(g), the units of Kp will be.

9. Loga/b-c =logb/c-a = logc/a-b then a+b+c =

D(+) - glucose reacts with hydroxyl amine and yields an oxime. The structure of the oxime would be

what is alphatic acid?

Maximum number of atoms are present in18 g H₂O20 g NaOH44 g CO220 g H₂

Arrange the following steps involved in metallurgy in correct order. Reduction to metal, crushing and grinding, concentration of ore, conversion to oxide

An atom contains only three shells. If the number ofelectrons present in its first shell is 2 and in second shell is 8, then the maximum number of electrons that can be accommodated in its third shell will be

Mr. Samwell Tarly has to learn Chemistry to become a Maester. He is stuck with Kinetics. Will you help him? (Maester is just Master in their language)Choose the appropriate definition of rate constant.

Among the following, the reaction that proceeds through an electrophilic substitution is:

Volume ar NTP of oxygen required to completely burn 1kg of coal

A solution of A (MM=20) and B(MM=10),(mole fraction of XB=0.6) having density 0.7gm/ml then molarity and molality of B in the solution will be

if k3(fe(cn)6) gets ionized completely in s solution no. of particles in the solution from 1 molecule solute is

Tetraaminecopper(II) ion is a square planar complex with one unpaired electron. According to valence bond theory the hybrid state of copper should be

At critical set of condition the value of compressibility factor is 1.5x the value of 'x' is:

The normality of 6M H3PO4 solution

If the role of a "catalyst" is to increase the rate of the reaction then why is there a "negative catalyst" which decreases the rate of reaction? How are they even helpful if they lead to delay in reactions?

82 Why is (Ph)3C' free radical less stable than allyl free radical?

Homolytic fission of C - C bond in ethane gives an intermediate in which carbon is

what is phorone

A fuel cell develops an electrical potential form the combustion of butane at 1 bar and 298 KC4H10(g)+6.5O2(g)→4CO2(g)+5H2O(l): ΔrG∘=−2746 kJ/mol What is Eo (in volts) of cell? ( Give your answer upto two decimal only)

If the sequence of bases in DNA is ATTCGATG then the sequence of bases in its transcript will be

Arrange the following in decreasing order of their basic strength:C6H5NH2,C2H5NH2,(C2H5)2NH,NH3

Which of the following is the most correct electron displacement for a nucleophilic reaction to take place?

At 298 K the standard free energy of formation of H2O(l) is −257.20 kJ/mole while that of its ionization into H+ ion and hydroxyl ions is 80.35 kJ/mole. Then the emf of the following cell at 298 K will be (take F=96500 C):H2(g, 1 bar)|H+(1M)||OH−(1M)|O2(g, 1 bar)

qAB=2kJ/molΔUBC=−5kJ/molWAB=−5kJ/molWCA=3kJ/molHeat absorbed by the system during process CA is:

What quantity of (NH4)SO2 is necessary for the production of NH3 gas sufficient to neutralize a solution containing 292 g of HCl

For the reaction, CO(g)+Cl2(g)⇌COCl2(g) the KpKc is equal to

2.8 g of calcium oxide prepared by heating limestone produced 0.8 g of oxygen. Calculate the mass percentage of calcium.

What are main concept s in vectors for her mains to get good marks

Why is water diamagnetic

What would be the IUPAC name of the compound shown below?

17. At 27^° C a motor car tyre has pressure of 2 atmosphere.Find the temperature, if the tyre suddenly bursts.(Given, Yair 14)a. 24.1 K b. 250 KC. 246.1Kd, 248 K

do we have to learn the whole electromagnetic spectrum?

The ionization isomer of [Cr(H2O)4Cl(NO2)]Cl is

Why co2 is non polar molecules but h2o is polar

16. Evaluate: lim x -> 0 (cos2x - cos3x)/cos4x-1.

How to identify electrophiles and nucleophiles?

The following chemical equation represents a reaction: Mg(s)+2HCl(aq)→MgCl2(aq)+H2(g) How many grams of the excess reactant will be left over in the reaction when 6 g of HCl is made to react with 5 g of Mg?

27. Which is the 1) typical 2) bridge element in modern periodic table ?

In the above reaction, 3.9 g of benzene on nitration gives 4.92 g of nitrobenzene. The percentage yield of nitrobenzene in the above reaction is ______% ( Round off to the Nearest Integer).Given atomic mass: C:12.0 u, H :1.0 u, O : 16.0 u, N : 14. 0 u)​​​​​​​

Lthium metal crystallises in a body centred cubic crystal. If the length of the side of the unit cell of lithium is 351 pm, the atomic radius of the lithium will be:(√3=1.7)

KF crystallizes in NaCl structure.If edge length is 400pm find the nearest distance between K+ and F-?

what is beta decay? How nucleus releases an electron?What is pions?

Distinguish between the terms homopolymer and copolymer and give an example of each.

How can washing soda be obtained from baking soda? Discuss uses of washing soda.

How is the variability in oxidation states of transition metals different from that of the non-transition metals? Illustrate with examples.

15. In a crystalline solid , particle C is packed in cubic close packing , particle A is at 25% of tetrahedral voids and particle B is at 50% of octahedral voids .if the particles along one of the face diagonal are removed , then simplest formula of the compound is ?

Which of the following is incorrect regarding minimum boiling azeotropes?

In the above reaction, 3.9 g of benzene on nitration gives 4.92 g of nitrobenzene. The percentage yield of nitrobenzene in the above reaction is ______% ( Round off to the Nearest Integer).Given atomic mass: C:12.0 u, H :1.0 u, O : 16.0 u, N : 14. 0 u)