46295 + Interview Questions in Chemistry

1.	14.The rate law for the reaction, RCl + NaOH(aq)-ROH + NaCl is given by Rate=k(RCl).The rate of reaction will be 1)Doubled on doubling the concentration of NaOH 2)Halved on reducing the concentration of alkyl halide to one half 3)Decreases on increasing the temperature 4)Unaffected by increasing the temperature
Answer» 14.The rate law for the reaction, RCl + NaOH(aq)-ROH + NaCl is given by Rate=k(RCl).The rate of reaction will be 1)Doubled on doubling the concentration of NaOH 2)Halved on reducing the concentration of alkyl halide to one half 3)Decreases on increasing the temperature 4)Unaffected by increasing the temperature

Discussion

2.	5. Cl3c-ch-ch2 + HBr =??
Answer» 5. Cl3c-ch-ch2 + HBr =??

Discussion

3.	Energy equivalents to one erg, one joule and one calorie are in the order
Answer» Energy equivalents to one erg, one joule and one calorie are in the order

Discussion

4.	no. of sigma bonds in ethene?
Answer» no. of sigma bonds in ethene?

Discussion

5.	The increasing order of bond dissociation energies of C - C, C - H and H - H bonds is
Answer» The increasing order of bond dissociation energies of C - C, C - H and H - H bonds is

Discussion

6.	what is the amount of o2 liberated at stp by 30 volume 1 l solution of h2o2
Answer» what is the amount of o2 liberated at stp by 30 volume 1 l solution of h2o2

Discussion

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

Discussion

8.	12. Which of the following will lead to maximum enolisation A)cyclohex_2,4enone B) CH3COCH2COH C) CH3COCH3 D) CH3COCH(Br)CO(CH3)
Answer» 12. Which of the following will lead to maximum enolisation A)cyclohex_2,4enone B) CH3COCH2COH C) CH3COCH3 D) CH3COCH(Br)CO(CH3)

Discussion

9.	Convert the following :- a) Ethyne to Nitrobenzene b)Benzene to para nitro bromo benzene c)acetylene to ethylne
Answer» Convert the following :- a) Ethyne to Nitrobenzene b)Benzene to para nitro bromo benzene c)acetylene to ethylne

Discussion

10.	5. Why dipole moment in 1,4-dichlorohexane is not zero ?
Answer» 5. Why dipole moment in 1,4-dichlorohexane is not zero ?

Discussion

11.	For the reaction,aP→bQGiven that: log[(ROD)P]=log[(ROA)Q]+1where (ROD)P is rate of disappearance of 'P',−d[P]dt and (ROA)Q is rate of appearance of 'Q',+d[Q]dt. Then a:b will be:
Answer» For the reaction, $a P \to b Q$ Given that: $l o g [(R O D)_{P}] = l o g [(R O A)_{Q}] + 1$ where $(R O D)_{P}$ is rate of disappearance of 'P', $\frac{- d [P]}{d t}$ and $(R O A)_{Q}$ is rate of appearance of 'Q', $\frac{+ d [Q]}{d t}$ . Then $a : b$ will be:

Discussion

12.	The product 'X' is:
Answer» The product 'X' is:

Discussion

13.	Tautomerism is exhibited by:
Answer» Tautomerism is exhibited by:

Discussion

14.	Which of the following represents the correct IUPAC name for the compounds concerned? (a) 2,2-Dimethylpentane or 2-Dimethylpentane (b) 2,4,7-Trimethyloctane or 2,5,7-Trimethyloctane (c) 2-Chloro-4-methylpentane or 4-Chloro-2-methylpentane (d) But-3-yn-1-ol or But-4-ol-1-yne
Answer» Which of the following represents the correct IUPAC name for the compounds concerned? (a) 2,2-Dimethylpentane or 2-Dimethylpentane (b) 2,4,7-Trimethyloctane or 2,5,7-Trimethyloctane (c) 2-Chloro-4-methylpentane or 4-Chloro-2-methylpentane (d) But-3-yn-1-ol or But-4-ol-1-yne

Discussion

15.	ClCH2CH2CH2I. + KCN(1mole each ) in presence of acetone will give product?
Answer» ClCH2CH2CH2I. + KCN(1mole each ) in presence of acetone will give product?

Discussion

16.	In view of their low ionization energies, the alkali metals are:
Answer» In view of their low ionization energies, the alkali metals are:

Discussion

17.	The Government of Delhi wants suggestions/measures from the residents to control air pollution. As a responsible citizen, suggest some measures to control air pollution. [5]
Answer» The Government of Delhi wants suggestions/measures from the residents to control air pollution. As a responsible citizen, suggest some measures to control air pollution. [5]

Discussion

18.	0.5 g of fuming H2SO4 (oleum) is diluted with water. This solution is completely neutralized by 26.7 mL of 0.4 N KOH. The percentage of free SO3 in the sample is
Answer» $0.5 g$ of fuming $H_{2} S O_{4}$ (oleum) is diluted with water. This solution is completely neutralized by $26.7 m L$ of $0.4 N K O H .$ The percentage of free $S O_{3}$ in the sample is

Discussion

19.	Concentrated aqueous sulphuric acid is 98% sulphuric acid by mass and has a density of 1.80g/ml.What volume of the acid required to make one litre of 0.1M sulphuric acid solution?
Answer» Concentrated aqueous sulphuric acid is 98% sulphuric acid by mass and has a density of 1.80g/ml.What volume of the acid required to make one litre of 0.1M sulphuric acid solution?

Discussion

20.	How to find the molar mass of CH4
Answer» How to find the molar mass of CH4

Discussion

21.	Given : The mass of electron is 9.11×10–31kg, Planck constant is 6.626×10–34 J s, the uncertainty involved in the measurement of velocity within a distance of 0.1 Å is:
Answer» Given : The mass of electron is $9.11 \times 10^{- 31} k g$ , Planck constant is $6.626 \times 10^{- 34} J s$ , the uncertainty involved in the measurement of velocity within a distance of $0.1 Å$ is:

Discussion

22.	Why tricyclopropyl carbocation is more stable than triphenylcarbocation. Triphenylcarbocation should be more stable since it has resonance instead of tricyclopropyl carbocation
Answer» Why tricyclopropyl carbocation is more stable than triphenylcarbocation. Triphenylcarbocation should be more stable since it has resonance instead of tricyclopropyl carbocation

Discussion

23.	in haber process 30litres of dihydrogen and 30 litres of dinitrogen were taken for reaction which yielded only 50%of the expected product.what will be the composition of gaseous mixtureunder the aforesaid condition in the en
Answer» in haber process 30litres of dihydrogen and 30 litres of dinitrogen were taken for reaction which yielded only 50%of the expected product.what will be the composition of gaseous mixtureunder the aforesaid condition in the en

Discussion

24.	maximum molar conductance at infinite dilution is of (eg:H, Na, K, Ca)
Answer» maximum molar conductance at infinite dilution is of (eg:H, Na, K, Ca)

Discussion

25.	57. the decomposition of N2O4 to NO2 is carried out at 280K in chloroform. when equilibrium has been established 0.2 mol of N2O4 and 2*10 raise to -3 ml of NO2 are present in 2 litre of solution .the equilibrium constant for reaction N2O4 is in dyanic equilibrium with 2NO2 IS ?
Answer» 57. the decomposition of N2O4 to NO2 is carried out at 280K in chloroform. when equilibrium has been established 0.2 mol of N2O4 and 2*10 raise to -3 ml of NO2 are present in 2 litre of solution .the equilibrium constant for reaction N2O4 is in dyanic equilibrium with 2NO2 IS ?

Discussion

26.	Arrange the following compounds in increasing order of their boiling points. CH3CHO, CH3CH2OH, CH3OCH3, CH3CH2CH3
Answer» Arrange the following compounds in increasing order of their boiling points. CH₃CHO, CH₃CH₂OH, CH₃OCH₃, CH₃CH₂CH₃

26.

Arrange the following compounds in increasing order of their boiling points. CH3CHO, CH3CH2OH, CH3OCH3, CH3CH2CH3

Answer»

Arrange
the following compounds in increasing order of their boiling points.

CH₃CHO,
CH₃CH₂OH,
CH₃OCH₃,
CH₃CH₂CH₃

Discussion

27.	32. Write the number of structural isomers of : (a) C3H7OH (b)C4H9OH
Answer» 32. Write the number of structural isomers of : (a) C3H7OH (b)C4H9OH

Discussion

28.	if ksp of ba(oh)2 is 1×10^{-6 }then how much NaOH is must be added 1000ml of 10^{-2} M of Bacl to start precipitation of Ba(OH)2
Answer» if ksp of ba(oh)2 is 1×10^{-6 }then how much NaOH is must be added 1000ml of 10^{-2} M of Bacl to start precipitation of Ba(OH)2

Discussion

29.	The product obtained in the reaction of diborane with excess of ammonia at low temperature is:
Answer» The product obtained in the reaction of diborane with excess of ammonia at low temperature is:

Discussion

30.	Match the addition equations with the correct multiplication equations.
Answer» Match the addition equations with the correct multiplication equations.

Discussion

31.	crista and macula are columnar or cuboidal?
Answer» crista and macula are columnar or cuboidal?

Discussion

32.	The correct order of bond lengths is:
Answer» The correct order of bond lengths is:

Discussion

33.	Which of the following statement(s) is correct?
Answer» Which of the following statement(s) is correct?

Discussion

34.	Which one of the following is not an ore of Aluminium?
Answer» Which one of the following is not an ore of Aluminium?

Discussion

35.	Calculate the ratio of the energy of the n=3 to n=1 transition of the hydrogen atom to the energy of the n=3 to n=1 transition of Li2+ ion.
Answer» Calculate the ratio of the energy of the $n = 3$ to $n = 1$ transition of the hydrogen atom to the energy of the $n = 3$ to $n = 1$ transition of $L i^{2 +}$ ion.

Discussion

36.	Which of the following can be used as oxidizing agent?
Answer» Which of the following can be used as oxidizing agent?

Discussion

37.	EDTA is
Answer» EDTA is

Discussion

38.	For the decomposition reaction NH2COONH4(s)⇋ 2NH3(g) + CO2(g). The Kp= 2.9 × 10−5atm2. The partial pressure of CO2 at equilibrium when 2 mole of NH2COONH4(s) was taken to start with would be
Answer» For the decomposition reaction $N H_{2} C O O N H_{4 (s)}$ $⇋$ $2 N H_{3 (g)}$ + $C O_{2 (g)}$ . The $K_{p}$ = 2.9 $\times$ $10^{- 5}$ ${a t m}^{2}$ . The partial pressure of $C O_{2}$ at equilibrium when 2 mole of $N H_{2} C O O N H_{4 (s)}$ was taken to start with would be

Discussion

39.	The compound that gives a product on moderate heating is
Answer» The compound that gives a product on moderate heating is

Discussion

40.	29. If there can be 3 values of spin quantum number then how many elements will be present in third period?
Answer» 29. If there can be 3 values of spin quantum number then how many elements will be present in third period?

Discussion

41.	Least thermally stable is
Answer» Least thermally stable is

Discussion

42.	A vessel of volume 5000cc contains (1/20) mole of molecular nitrogen at 1800K.If 30% of the molecules are now dissociated,the pressure inside the vessel in pa is
Answer» A vessel of volume 5000cc contains (1/20) mole of molecular nitrogen at 1800K.If 30% of the molecules are now dissociated,the pressure inside the vessel in pa is

Discussion

43.	46. In the cell reaction,Zn (s)+Cu2+(aq)~>Zn2+(aq)+Cu (s) ,the concentration of Cu2+ is doubled. E^° cell will not change why
Answer» 46. In the cell reaction,Zn (s)+Cu2+(aq)~>Zn2+(aq)+Cu (s) ,the concentration of Cu2+ is doubled. E^° cell will not change why

Discussion

44.	What is the oxidation state of sulphur in S2O7²‐
Answer» What is the oxidation state of sulphur in S2O7²‐

Discussion

45.	Consider the following reaction,Major product (P) in the above reaction is[0.77 Mark]
Answer» Consider the following reaction, Major product (P) in the above reaction is [0.77 Mark]

Discussion

46.	10. The volume of 0.1molarity kmno4 required to oxidise 20ml of 0.1molarity oxalic acid in acidic medium is
Answer» 10. The volume of 0.1molarity kmno4 required to oxidise 20ml of 0.1molarity oxalic acid in acidic medium is

Discussion

47.	The rms speed of helium at temperature t1 is equal to rms speed of hydrogen gas at tempeature t2. Then find a relation between t1 and t2?
Answer» The rms speed of helium at temperature t1 is equal to rms speed of hydrogen gas at tempeature t2. Then find a relation between t1 and t2?

Discussion

48.	Which of the following has the highest bolling point?
Answer» Which of the following has the highest bolling point?

Discussion

49.	The Down’s process is used for the extraction of which alkali metal?
Answer» The Down’s process is used for the extraction of which alkali metal?

Discussion

50.	gibbs free energy of reversible reaction at its equilibrium is
Answer» gibbs free energy of reversible reaction at its equilibrium is

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

5. Cl3c-ch-ch2 + HBr =??

Energy equivalents to one erg, one joule and one calorie are in the order

no. of sigma bonds in ethene?

The increasing order of bond dissociation energies of C - C, C - H and H - H bonds is

what is the amount of o2 liberated at stp by 30 volume 1 l solution of h2o2

For the reaction CO(g)+Cl2(g)⇌COCl2(g) the value of KpKc is equal to :

12. Which of the following will lead to maximum enolisation A)cyclohex_2,4enone B) CH3COCH2COH C) CH3COCH3 D) CH3COCH(Br)CO(CH3)

Convert the following :- a) Ethyne to Nitrobenzene b)Benzene to para nitro bromo benzene c)acetylene to ethylne

5. Why dipole moment in 1,4-dichlorohexane is not zero ?

For the reaction,aP→bQGiven that: log[(ROD)P]=log[(ROA)Q]+1where (ROD)P is rate of disappearance of 'P',−d[P]dt and (ROA)Q is rate of appearance of 'Q',+d[Q]dt. Then a:b will be:

The product 'X' is:

Tautomerism is exhibited by:

Which of the following represents the correct IUPAC name for the compounds concerned? (a) 2,2-Dimethylpentane or 2-Dimethylpentane (b) 2,4,7-Trimethyloctane or 2,5,7-Trimethyloctane (c) 2-Chloro-4-methylpentane or 4-Chloro-2-methylpentane (d) But-3-yn-1-ol or But-4-ol-1-yne

ClCH2CH2CH2I. + KCN(1mole each ) in presence of acetone will give product?

In view of their low ionization energies, the alkali metals are:

The Government of Delhi wants suggestions/measures from the residents to control air pollution. As a responsible citizen, suggest some measures to control air pollution. [5]

0.5 g of fuming H2SO4 (oleum) is diluted with water. This solution is completely neutralized by 26.7 mL of 0.4 N KOH. The percentage of free SO3 in the sample is

Concentrated aqueous sulphuric acid is 98% sulphuric acid by mass and has a density of 1.80g/ml.What volume of the acid required to make one litre of 0.1M sulphuric acid solution?

How to find the molar mass of CH4

Given : The mass of electron is 9.11×10–31kg, Planck constant is 6.626×10–34 J s, the uncertainty involved in the measurement of velocity within a distance of 0.1 Å is:

Why tricyclopropyl carbocation is more stable than triphenylcarbocation. Triphenylcarbocation should be more stable since it has resonance instead of tricyclopropyl carbocation

in haber process 30litres of dihydrogen and 30 litres of dinitrogen were taken for reaction which yielded only 50%of the expected product.what will be the composition of gaseous mixtureunder the aforesaid condition in the en

maximum molar conductance at infinite dilution is of (eg:H, Na, K, Ca)

57. the decomposition of N2O4 to NO2 is carried out at 280K in chloroform. when equilibrium has been established 0.2 mol of N2O4 and 2*10 raise to -3 ml of NO2 are present in 2 litre of solution .the equilibrium constant for reaction N2O4 is in dyanic equilibrium with 2NO2 IS ?

Arrange the following compounds in increasing order of their boiling points. CH3CHO, CH3CH2OH, CH3OCH3, CH3CH2CH3

32. Write the number of structural isomers of : (a) C3H7OH (b)C4H9OH

if ksp of ba(oh)2 is 1×10^{-6 }then how much NaOH is must be added 1000ml of 10^{-2} M of Bacl to start precipitation of Ba(OH)2

The product obtained in the reaction of diborane with excess of ammonia at low temperature is:

Match the addition equations with the correct multiplication equations.

crista and macula are columnar or cuboidal?

The correct order of bond lengths is:

Which of the following statement(s) is correct?

Which one of the following is not an ore of Aluminium?

Calculate the ratio of the energy of the n=3 to n=1 transition of the hydrogen atom to the energy of the n=3 to n=1 transition of Li2+ ion.

Which of the following can be used as oxidizing agent?

EDTA is

For the decomposition reaction NH2COONH4(s)⇋ 2NH3(g) + CO2(g). The Kp= 2.9 × 10−5atm2. The partial pressure of CO2 at equilibrium when 2 mole of NH2COONH4(s) was taken to start with would be

The compound that gives a product on moderate heating is

29. If there can be 3 values of spin quantum number then how many elements will be present in third period?

Least thermally stable is

A vessel of volume 5000cc contains (1/20) mole of molecular nitrogen at 1800K.If 30% of the molecules are now dissociated,the pressure inside the vessel in pa is

46. In the cell reaction,Zn (s)+Cu2+(aq)~>Zn2+(aq)+Cu (s) ,the concentration of Cu2+ is doubled. E^° cell will not change why

What is the oxidation state of sulphur in S2O7²‐

Consider the following reaction,Major product (P) in the above reaction is[0.77 Mark]

10. The volume of 0.1molarity kmno4 required to oxidise 20ml of 0.1molarity oxalic acid in acidic medium is

The rms speed of helium at temperature t1 is equal to rms speed of hydrogen gas at tempeature t2. Then find a relation between t1 and t2?

Which of the following has the highest bolling point?

The Down’s process is used for the extraction of which alkali metal?

gibbs free energy of reversible reaction at its equilibrium is