46295 + Interview Questions in Chemistry

1.	A polymer of prop-2-enenitrile is called
Answer» A polymer of prop-2-enenitrile is called

Discussion

2.	Ammonia is:
Answer» Ammonia is:

Discussion

3.	Which of the following compound may not exist as enantiomers.
Answer» Which of the following compound may not exist as enantiomers.

Discussion

4.	Define the activity of a given radioactive substance. Write its S.I. unit.
Answer» Define the activity of a given radioactive substance. Write its S.I. unit.

Discussion

5.	The oxidation number of S is +6 in which of the following compounds:
Answer» The oxidation number of S is +6 in which of the following compounds:

Discussion

6.	Which of the following exhibits highest molar conductivity?
Answer» Which of the following exhibits highest molar conductivity?

Discussion

7.	Dihydroxyacetone-3-phosphate and glyceraldehyde-3-phosphate are interconvertible. The enzyme responsible for this interconversion belongs to the category of
Answer» Dihydroxyacetone-3-phosphate and glyceraldehyde-3-phosphate are interconvertible. The enzyme responsible for this interconversion belongs to the category of

Discussion

8.	In the following question, a statement fo Assertion (A) followed by a statement fo Reason (R ) is given. Choose the correct option out of the choices given below in each question Assertion (A) the carbonate of lithium decomposes easily on heating to form lithium oxide and CO2 Reason (R) Lithium being very small in size polarises large carbonate ion leading to the formation of more stable Li2OandCO2 (a) Both A and R are correct and R is the correct Explanation of A (b) Both A and R are correct but R is not the correct explanation Of A (c) Both A and R are not Correct (d) A is not correct but R is correct
Answer» In the following question, a statement fo Assertion (A) followed by a statement fo Reason (R ) is given. Choose the correct option out of the choices given below in each question Assertion (A) the carbonate of lithium decomposes easily on heating to form lithium oxide and $C O_{2}$ Reason (R) Lithium being very small in size polarises large carbonate ion leading to the formation of more stable $L i_{2} O a n d C O_{2}$ (a) Both A and R are correct and R is the correct Explanation of A (b) Both A and R are correct but R is not the correct explanation Of A (c) Both A and R are not Correct (d) A is not correct but R is correct

Discussion

9.	BF3 with LiAlH4 on reduction gives:
Answer» $B F_{3}$ with $L i A l H_{4}$ on reduction gives:

Discussion

10.	Complete the following reaction (i) O2−2+H2O⟶ (ii) O−2+H2O⟶
Answer» Complete the following reaction (i) $O_{2}^{2 -} + H_{2} O ⟶$ (ii) $O_{2}^{-} + H_{2} O ⟶$

10.

Complete the following reaction (i) O2−2+H2O⟶ (ii) O−2+H2O⟶

Answer»

Complete the following reaction
(i) $O_{2}^{2 -} + H_{2} O ⟶$

(ii) $O_{2}^{-} + H_{2} O ⟶$

Discussion

11.	Question 04 Hydrogen bonds are formed in many compounds e.g., H2O, HF, NH3. The boiling point of such compounds depends to a extent on the strength of hydrogen bond and the number of hydrogen bonds. The correct decreasing order of the boiling points above compounds is (a) HF>H2O>NH3 (b) H2O>HF>NH3 (c) NH3>HF>H2O (d) NH3>H2O>HF
Answer» Question 04 Hydrogen bonds are formed in many compounds e.g., $H_{2} O, H F, N H_{3}$ . The boiling point of such compounds depends to a extent on the strength of hydrogen bond and the number of hydrogen bonds. The correct decreasing order of the boiling points above compounds is (a) $H F > H_{2} O > N H_{3}$ (b) $H_{2} O > H F > N H_{3}$ (c) $N H_{3} > H F > H_{2} O$ (d) $N H_{3} > H_{2} O > H F$

11.

Question 04 Hydrogen bonds are formed in many compounds e.g., H2O, HF, NH3. The boiling point of such compounds depends to a extent on the strength of hydrogen bond and the number of hydrogen bonds. The correct decreasing order of the boiling points above compounds is (a) HF>H2O>NH3 (b) H2O>HF>NH3 (c) NH3>HF>H2O (d) NH3>H2O>HF

Answer»

Question 04

Hydrogen bonds are formed in many compounds e.g., $H_{2} O, H F, N H_{3}$ . The boiling point of such compounds depends to a extent on the strength of hydrogen bond and the number of hydrogen bonds. The correct decreasing order of the boiling points above compounds is

(a) $H F > H_{2} O > N H_{3}$

(b) $H_{2} O > H F > N H_{3}$

(c) $N H_{3} > H F > H_{2} O$

(d) $N H_{3} > H_{2} O > H F$

Discussion

12.	Which is the correct statement about birth control pills? (a) Contain estrogen only (b) Contain progesterone only (c) Contain a mixture of estrogen and progesterone derivatives (d) Progesterone enhances ovulation
Answer» Which is the correct statement about birth control pills? (a) Contain estrogen only (b) Contain progesterone only (c) Contain a mixture of estrogen and progesterone derivatives (d) Progesterone enhances ovulation

Discussion

13.	Explain why some times foaming is seen in river water near the place where sewage water is poured after treatment?
Answer» Explain why some times foaming is seen in river water near the place where sewage water is poured after treatment?

Discussion

14.	Ethylidene chloride on hydrolysis with ag.KOH gives
Answer» Ethylidene chloride on hydrolysis with ag.KOH gives

Discussion

15.	Find the major product 'S'.
Answer» Find the major product 'S'.

Discussion

16.	Write the conjugate acids for the following Brönsted bases: NH−2,NH3 and HCOO–.
Answer» Write the conjugate acids for the following Brönsted bases: $N H_{2}^{-}, N H_{3}$ and $H C O O^{-}$ .

Discussion

17.	Describe the term D- and L- configuration used for amino acids with examples.
Answer» Describe the term D- and L- configuration used for amino acids with examples.

Discussion

18.	What is the hybridization of N in N(CH3)3 and N(SiH3)3?
Answer» What is the hybridization of $N$ in $N (C H_{3})_{3}$ and $N (S i H_{3})_{3}$ ?

Discussion

19.	What is a difference between an electrophile and nucleophile ??? Please explain in detail.
Answer» What is a difference between an electrophile and nucleophile ??? Please explain in detail.

19.

What is a difference between an electrophile and nucleophile ??? Please explain in detail.

Answer»

What is a difference between an electrophile and nucleophile ???

Please explain in detail.

Discussion

20.	Which will form 2,2-dibromopropane with HBr in presence of solvent CCl4?
Answer» Which will form 2,2-dibromopropane with HBr in presence of solvent $C C l_{4}$ ?

Discussion

21.	A cube of ice floats partly in water and partly in K. oil figure. Find the ratio of the volume of ice immersed in water to that in K.oil. Specific gravity of K.oil is 0.8 and that of ice is 0.9.
Answer» A cube of ice floats partly in water and partly in K. oil figure. Find the ratio of the volume of ice immersed in water to that in K.oil. Specific gravity of K.oil is 0.8 and that of ice is 0.9.

21.

A cube of ice floats partly in water and partly in K. oil figure. Find the ratio of the volume of ice immersed in water to that in K.oil. Specific gravity of K.oil is 0.8 and that of ice is 0.9.

Answer»

A cube of ice floats partly in water and partly in K. oil figure. Find the ratio of the volume of ice immersed in water to that in K.oil. Specific gravity of K.oil is 0.8 and that of ice is 0.9.

Discussion

22.	1,2-dibromoburane is allowed to react with Mg in dry ether .The product formed is (along with mechanism)
Answer» 1,2-dibromoburane is allowed to react with Mg in dry ether .The product formed is (along with mechanism)

Discussion

23.	The specific heats of iodine vapour and solid are 0.031 and 0.055 cal K−1 g−1 respectively. If heat of sublimation of iodine is 24 cal g−1 at 200oC, find its value at 250∘C.
Answer» The specific heats of iodine vapour and solid are $0.031$ and $0.055 c a l K^{- 1} g^{- 1}$ respectively. If heat of sublimation of iodine is $24 c a l g^{- 1}$ at $200^{o} C$ , find its value at $250^{\circ} C$ .

Discussion

24.	What Is Isoelectronic ? Please Answer It With Suitable Example
Answer» What Is Isoelectronic ? Please Answer It With Suitable Example

24.

What Is Isoelectronic ? Please Answer It With Suitable Example

Answer»

What Is Isoelectronic ?

Please Answer It With Suitable Example

Discussion

25.	The adsorption of hydrogen by metals is called –
Answer» The adsorption of hydrogen by metals is called –

Discussion

26.	How bonding and antibonding orbital are formed according to lcao
Answer» How bonding and antibonding orbital are formed according to lcao

Discussion

27.	Which compound below is the product expected from the following reaction ?
Answer» Which compound below is the product expected from the following reaction ?

Discussion

28.	If the close packed cations in an AB-type solid have a radius of 75pm, what would be the maximum and minimum sizes of the anions filling the voids?
Answer» If the close packed cations in an AB-type solid have a radius of 75pm, what would be the maximum and minimum sizes of the anions filling the voids?

Discussion

29.	The electronic configuration of an element with the largest difference between the 1st and 2nd ionization energies is
Answer» The electronic configuration of an element with the largest difference between the $1^{s t}$ and $2^{n d}$ ionization energies is

Discussion

30.	4HNO3+P4O10−10 oC−−−−→+2N2O5+(HPO3)4 Find out the value of expression \|x−y\| for above reaction where, x = maximum number of eaqual N−O bond length in N2O5. y = Difference of oxy linkages (P - O - P) between P4O10 and (HPO3)4.
Answer» $4 H N O_{3} + P_{4} O_{10} - 10^{o} C - --- \to + 2 N_{2} O_{5} + (H P O_{3})_{4}$ Find out the value of expression $\| x - y \|$ for above reaction where, x = maximum number of eaqual $N - O$ bond length in $N_{2} O_{5}$ . y = Difference of oxy linkages (P - O - P) between $P_{4} O_{10}$ and $(H P O_{3})_{4}$ .

Discussion

31.	The IUPAC name of the Wilkinson’s catalyst [RhCl(PPH3)3] is:
Answer» The IUPAC name of the Wilkinson’s catalyst $[R h C l (P P H_{3})_{3}]$ is:

Discussion

32.	A compound was found to contain 9.6% of oxygen. What is the minimum molar mass of of the compound?
Answer» A compound was found to contain 9.6% of oxygen. What is the minimum molar mass of of the compound?

Discussion

33.	What do you mean by Biochemical Oxygen Demand (BOD)?
Answer» What do you mean by Biochemical Oxygen Demand (BOD)?

Discussion

34.	The brown ring in the detection of NO−3 ion is due to the formation of
Answer» The brown ring in the detection of $N O_{3}^{-}$ ion is due to the formation of

Discussion

35.	The chemical system that is non-aromatic is
Answer» The chemical system that is non-aromatic is

Discussion

36.	A dibasic acid (A) with a dipole moment (non-zero) de-colourises bromine water. Functional isomer of A is an ester B. A & B are respectively:
Answer» A dibasic acid (A) with a dipole moment (non-zero) de-colourises bromine water. Functional isomer of A is an ester B. A & B are respectively:

Discussion

37.	Explain the difference between instantaneous rate of reaction and average rate of a reaction.
Answer» Explain the difference between instantaneous rate of reaction and average rate of a reaction.

Discussion

38.	why cell wall is absent in animal cell
Answer» why cell wall is absent in animal cell

Discussion

39.	The arrangement of (CH3)3C−, (CH3)2CH− , CH3CH2− when attached to a benzene or an unsaturated group in increasing order of inductive effect effect is.
Answer» The arrangement of ${(C H_{3})}_{3} C -$ , ${(C H_{3})}_{2} C H -$ , $C H_{3} C H_{2} -$ when attached to a benzene or an unsaturated group in increasing order of inductive effect effect is.

Discussion

40.	Not got sir how to bring answer
Answer» Not got sir how to bring answer

Discussion

41.	Hydrogen support for combustion and oxygen also support for fire the then how H²O can remove fire
Answer» Hydrogen support for combustion and oxygen also support for fire the then how H²O can remove fire

Discussion

42.	Pt H2H+1 atm10−xMNaOH Value of "x" so that potential of this electrode becomes 0.4728 V at 25∘C___
Answer» $\begin{matrix} P t H_{2} & H^{+} 1 a t m & 10^{- x} M N a O H \end{matrix}$ Value of "x" so that potential of this electrode becomes 0.4728 V at $25^{\circ} C$ ___

42.

Pt H2H+1 atm10−xMNaOH Value of "x" so that potential of this electrode becomes 0.4728 V at 25∘C___

Answer»

$\begin{matrix} P t H_{2} & H^{+} 1 a t m & 10^{- x} M N a O H \end{matrix}$

Value of "x" so that potential of this electrode becomes 0.4728 V at $25^{\circ} C$ ___

Discussion

43.	If 60% of a first order reaction was completed in 60 minutes, 50% of the same reaction would be completed in approximately : (log 4 = 0.60, log 5 = 0.69)
Answer» If 60% of a first order reaction was completed in 60 minutes, 50% of the same reaction would be completed in approximately : (log 4 = 0.60, log 5 = 0.69)

Discussion

44.	The critical temperature (Tc) and critical pressure pc) of CO2 are 30.98∘C and 73 atm respectively.Can CO2 (g) be liquefied at 32∘C and 80 atm pressure?
Answer» The critical temperature $(T_{c})$ and critical pressure $p_{c})$ of $C O_{2}$ are ${30.98}^{\circ} C$ and 73 atm respectively.Can $C O_{2}$ (g) be liquefied at $32^{\circ} C$ and 80 atm pressure?

Discussion

45.	The distance between the centres of carbon and oxygen atoms in the carbon monoxide molecule is 1.12 Å. The distance of centre of mass from the oxygen atom is
Answer» The distance between the centres of carbon and oxygen atoms in the carbon monoxide molecule is 1.12 Å. The distance of centre of mass from the oxygen atom is

Discussion

46.	The reduction potential of hydrogen half – cell will be negative if:-
Answer» The reduction potential of hydrogen half – cell will be negative if:-

Discussion

47.	Transitional elements exhibit variable valences because they release e− from
Answer» Transitional elements exhibit variable valences because they release $e^{-}$ from

Discussion

48.	The oxidation state of Cl2 is
Answer» The oxidation state of $C l_{2}$ is

Discussion

49.	The repeating units of PTFE is:
Answer» The repeating units of PTFE is:

Discussion

50.	Propanal can be converted into 1–propanol by:
Answer» Propanal can be converted into 1–propanol by:

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

A polymer of prop-2-enenitrile is called

Ammonia is:

Which of the following compound may not exist as enantiomers.

Define the activity of a given radioactive substance. Write its S.I. unit.

The oxidation number of S is +6 in which of the following compounds:

Which of the following exhibits highest molar conductivity?

Dihydroxyacetone-3-phosphate and glyceraldehyde-3-phosphate are interconvertible. The enzyme responsible for this interconversion belongs to the category of

BF3 with LiAlH4 on reduction gives:

Complete the following reaction (i) O2−2+H2O⟶ (ii) O−2+H2O⟶

Which is the correct statement about birth control pills? (a) Contain estrogen only (b) Contain progesterone only (c) Contain a mixture of estrogen and progesterone derivatives (d) Progesterone enhances ovulation

Explain why some times foaming is seen in river water near the place where sewage water is poured after treatment?

Ethylidene chloride on hydrolysis with ag.KOH gives

Find the major product 'S'.

Write the conjugate acids for the following Brönsted bases: NH−2,NH3 and HCOO–.

Describe the term D- and L- configuration used for amino acids with examples.

What is the hybridization of N in N(CH3)3 and N(SiH3)3?

What is a difference between an electrophile and nucleophile ??? Please explain in detail.

Which will form 2,2-dibromopropane with HBr in presence of solvent CCl4?

A cube of ice floats partly in water and partly in K. oil figure. Find the ratio of the volume of ice immersed in water to that in K.oil. Specific gravity of K.oil is 0.8 and that of ice is 0.9.

1,2-dibromoburane is allowed to react with Mg in dry ether .The product formed is (along with mechanism)

The specific heats of iodine vapour and solid are 0.031 and 0.055 cal K−1 g−1 respectively. If heat of sublimation of iodine is 24 cal g−1 at 200oC, find its value at 250∘C.

What Is Isoelectronic ? Please Answer It With Suitable Example

The adsorption of hydrogen by metals is called –

How bonding and antibonding orbital are formed according to lcao

Which compound below is the product expected from the following reaction ?

If the close packed cations in an AB-type solid have a radius of 75pm, what would be the maximum and minimum sizes of the anions filling the voids?

The electronic configuration of an element with the largest difference between the 1st and 2nd ionization energies is

4HNO3+P4O10−10 oC−−−−→+2N2O5+(HPO3)4 Find out the value of expression |x−y| for above reaction where, x = maximum number of eaqual N−O bond length in N2O5. y = Difference of oxy linkages (P - O - P) between P4O10 and (HPO3)4.

The IUPAC name of the Wilkinson’s catalyst [RhCl(PPH3)3] is:

A compound was found to contain 9.6% of oxygen. What is the minimum molar mass of of the compound?

What do you mean by Biochemical Oxygen Demand (BOD)?

The brown ring in the detection of NO−3 ion is due to the formation of

The chemical system that is non-aromatic is

A dibasic acid (A) with a dipole moment (non-zero) de-colourises bromine water. Functional isomer of A is an ester B. A &amp; B are respectively:

Explain the difference between instantaneous rate of reaction and average rate of a reaction.

why cell wall is absent in animal cell

The arrangement of (CH3)3C−, (CH3)2CH− , CH3CH2− when attached to a benzene or an unsaturated group in increasing order of inductive effect effect is.

Not got sir how to bring answer

Hydrogen support for combustion and oxygen also support for fire the then how H²O can remove fire

Pt H2H+1 atm10−xMNaOH Value of "x" so that potential of this electrode becomes 0.4728 V at 25∘C___

If 60% of a first order reaction was completed in 60 minutes, 50% of the same reaction would be completed in approximately : (log 4 = 0.60, log 5 = 0.69)

The critical temperature (Tc) and critical pressure pc) of CO2 are 30.98∘C and 73 atm respectively.Can CO2 (g) be liquefied at 32∘C and 80 atm pressure?

The distance between the centres of carbon and oxygen atoms in the carbon monoxide molecule is 1.12 Å. The distance of centre of mass from the oxygen atom is

The reduction potential of hydrogen half – cell will be negative if:-

Transitional elements exhibit variable valences because they release e− from

The oxidation state of Cl2 is

The repeating units of PTFE is:

Propanal can be converted into 1–propanol by:

A dibasic acid (A) with a dipole moment (non-zero) de-colourises bromine water. Functional isomer of A is an ester B. A & B are respectively: