46295 + Interview Questions in Chemistry

1.	why F^{- } is larger in size than Na^+ even if Na comes in next period?
Answer» why F^{- } is larger in size than Na^+ even if Na comes in next period?

Discussion

2.	Why conjugate bases of strong acids have less tendency than water to accept protons in aqueous solution?
Answer» Why conjugate bases of strong acids have less tendency than water to accept protons in aqueous solution?

Discussion

3.	Question 17A purple coloured non-metal form a brown solution in alcohol which is applied on wounds as an antiseptic. Name the nonmetal.
Answer» Question 17 A purple coloured non-metal form a brown solution in alcohol which is applied on wounds as an antiseptic. Name the nonmetal.

Discussion

4.	Is volume contraction same as change in volume?
Answer» Is volume contraction same as change in volume?

Discussion

5.	The pressure of hydrogen required to make the potential of hydrogen electrode zero in pure water at 298K is(1)10^-4 (2)10^-14 (3)10^-12 (4)10^-10
Answer» The pressure of hydrogen required to make the potential of hydrogen electrode zero in pure water at 298K is (1)10^-4 (2)10^-14 (3)10^-12 (4)10^-10

Discussion

6.	Which phenomenon is represented by the following diagram ?
Answer» Which phenomenon is represented by the following diagram ?

Discussion

7.	The data for the reaction is A + B → C is Exp.[A]0[B]0Initial rate10.0120.0350.1020.0240.0350.8030.0120.0700.1040.0240.0700.80
Answer» The data for the reaction is A + B $\to$ C is $\begin{matrix} E x p . & [A]_{0} & [B]_{0} & I n i t i a l r a t e 1 & 0.012 & 0.035 & 0.10 2 & 0.024 & 0.035 & 0.80 3 & 0.012 & 0.070 & 0.10 4 & 0.024 & 0.070 & 0.80 \end{matrix}$

Discussion

8.	How relative lovering of vapour pressure is inversely proportional to molecular mass of solute (it is a constant right)?How hydrogen bond is formed btw acetone and chloroform, hydrogen bonding is only possible with hydrogen attached to oxygen, fluorine and nitrogen right?
Answer» How relative lovering of vapour pressure is inversely proportional to molecular mass of solute (it is a constant right)? How hydrogen bond is formed btw acetone and chloroform, hydrogen bonding is only possible with hydrogen attached to oxygen, fluorine and nitrogen right?

Discussion

9.	The average concentration of SO2 in the atmosphere over a city on a certain day is 10 ppm. when the average temperature is 298 K. Given that the solubility of SO2 in water at 298 K is 1.3653 moles litre–1 and the pKa of H2SO3 is 1.92, estimate the pH of rain on that day.
Answer» The average concentration of SO2 in the atmosphere over a city on a certain day is 10 ppm. when the average temperature is 298 K. Given that the solubility of SO2 in water at 298 K is 1.3653 moles litre–1 and the pKa of H2SO3 is 1.92, estimate the pH of rain on that day.

Discussion

10.	Q. What is path function
Answer» Q. What is path function

Discussion

11.	what is reformusky reaction
Answer» what is reformusky reaction

Discussion

12.	21.rate of reaction increases four times when the temperature changes from 300 Kelvin to 320 Kelvin. Calculate the energy of activation of reaction assuming that it does not change with temperature
Answer» 21.rate of reaction increases four times when the temperature changes from 300 Kelvin to 320 Kelvin. Calculate the energy of activation of reaction assuming that it does not change with temperature

Discussion

13.	which is more acidic CH(CN)2 and CHCl
Answer» which is more acidic CH(CN)2 and CHCl

Discussion

14.	Why does the C-O bond polarity increases with the increase in no. Of electron releasing groups attached to the carbon containing OH group ?
Answer» Why does the C-O bond polarity increases with the increase in no. Of electron releasing groups attached to the carbon containing OH group ?

Discussion

15.	24. Which graphs not straight line for ideal gas? a)V versus T(n and p constant) b)T versus p(n and V constant) c)p versus 1/V ( n and T constant) d) n versus 1/p(V and T constant)
Answer» 24. Which graphs not straight line for ideal gas? a)V versus T(n and p constant) b)T versus p(n and V constant) c)p versus 1/V ( n and T constant) d) n versus 1/p(V and T constant)

Discussion

16.	The volume of atoms (radius r) present in fcc unit cell of metal is:
Answer» The volume of atoms (radius r) present in fcc unit cell of metal is:

Discussion

17.	Give structures of theproducts you would expect when each of the following alcohol reactswith (a) HCl-ZnCl2 (b) HBr and (c) SOCl2. (i) Butan-1-ol (ii) 2-Methylbutan-2-ol
Answer» Give structures of the products you would expect when each of the following alcohol reacts with (a) HCl-ZnCl₂ (b) HBr and (c) SOCl₂. (i) Butan-1-ol (ii) 2-Methylbutan-2-ol

17.

Give structures of theproducts you would expect when each of the following alcohol reactswith (a) HCl-ZnCl2 (b) HBr and (c) SOCl2. (i) Butan-1-ol (ii) 2-Methylbutan-2-ol

Answer»

Give structures of the
products you would expect when each of the following alcohol reacts
with (a) HCl-ZnCl₂ (b) HBr and (c) SOCl₂.

(i) Butan-1-ol

(ii)
2-Methylbutan-2-ol

Discussion

18.	Enthalpy change for the reaction, 4H(g) →2H2 is -869.6 kJ. The dissociation energy of H -H bond is
Answer» Enthalpy change for the reaction, 4H(g) →2H2 is -869.6 kJ. The dissociation energy of H -H bond is

Discussion

19.	The number of stereoisomers possible for a compound of the molecular formula CH3—CH=CH—(CHCl)—Me is:
Answer» The number of stereoisomers possible for a compound of the molecular formula CH₃—CH=CH—(CHCl)—Me is:

Discussion

20.	Which of the following compounds has the most negative heat of hydrogenation?
Answer» Which of the following compounds has the most negative heat of hydrogenation?

Discussion

21.	Which of the following elements can not exhibit sp3d hybridisation state:
Answer» Which of the following elements can not exhibit $s p^{3} d$ hybridisation state:

Discussion

22.	if Iz+1/zI=3 , then IzImax + IzImin equals to
Answer» if Iz+1/zI=3 , then IzImax + IzImin equals to

Discussion

23.	Which of the following is not a peroxide?
Answer» Which of the following is not a peroxide?

Discussion

24.	ntA body of mass 4 kg is moving up an inclined plane rising 1 in 40 with velocity 40m/s if efficiency is 50% calculate power requiredn nta) 78.4Wn ntb) 38.4Wn
Answer» ntA body of mass 4 kg is moving up an inclined plane rising 1 in 40 with velocity 40m/s if efficiency is 50% calculate power requiredn nta) 78.4Wn ntb) 38.4Wn

Discussion

25.	20 gof magnesium carbonate sample decomposes on heating to give carbon dioxide and 8g of magnesium oxide what will be the percentage purity of magnesium carbonate in the sample
Answer» 20 gof magnesium carbonate sample decomposes on heating to give carbon dioxide and 8g of magnesium oxide what will be the percentage purity of magnesium carbonate in the sample

Discussion

26.	For electron affinity of halogens which of the following is/are correct ?
Answer» For electron affinity of halogens which of the following is/are correct ?

Discussion

27.	Germanium or silicon becomes semiconductor due to
Answer» Germanium or silicon becomes semiconductor due to

Discussion

28.	A soap bubble is blown slowly at the end of a tube by a pump supplying air at a constant rate. Draw a graph to represent the variation between the excess pressure inside the bubble with time.
Answer» A soap bubble is blown slowly at the end of a tube by a pump supplying air at a constant rate. Draw a graph to represent the variation between the excess pressure inside the bubble with time.

Discussion

29.	Which of the following bond is not present in DNA?
Answer» Which of the following bond is not present in DNA?

Discussion

30.	A compound is formed by two elements P and Q. Atoms of Q make HCP lattice and those of the element P occupy all the tetrahedral voids. What is the formula of the compound?
Answer» A compound is formed by two elements P and Q. Atoms of Q make HCP lattice and those of the element P occupy all the tetrahedral voids. What is the formula of the compound?

Discussion

31.	reaction of tertbutyl alcohol with thionyl chloride form retained or inverted product
Answer» reaction of tertbutyl alcohol with thionyl chloride form retained or inverted product

Discussion

32.	WHICH OF THE FOLLOWING CONFIGURATION IS ASSOCIATED WITH THE BIGGEST JUMP BETWEEN 2ND AND 3RD IE?A) 1s2 2s2 2p2B) 1s2 2s2 2p6 3s1C) 1s2 2s2 2p6 3s2D) 1s2 2s2 2p1
Answer» WHICH OF THE FOLLOWING CONFIGURATION IS ASSOCIATED WITH THE BIGGEST JUMP BETWEEN 2ND AND 3RD IE? A) 1s2 2s2 2p2 B) 1s2 2s2 2p6 3s1 C) 1s2 2s2 2p6 3s2 D) 1s2 2s2 2p1

Discussion

33.	As we move from NH3 to BiH3 ,basicity should increase or decrease ?
Answer» As we move from NH3 to BiH3 ,basicity should increase or decrease ?

Discussion

34.	how many benzinoid isomers are possible for C7H8o
Answer» how many benzinoid isomers are possible for C7H8o

Discussion

35.	The Cannizzaro reaction is not given by:
Answer» The Cannizzaro reaction is not given by:

Discussion

36.	calculate the percentage ionization of 0.01M acetic acid in 0.1M HCl Ka of acetic acid is 1.8×10^-
Answer» calculate the percentage ionization of 0.01M acetic acid in 0.1M HCl Ka of acetic acid is 1.8×10^-

Discussion

37.	A balloon of diameter 20 m weighs 100 Kg. Calculate its payload if it is filled with helium at 1.0 atm and 27∘C. Density of air is 1.2 Kg m−3(R=0.082 dm3 atm K−1 mole−1)
Answer» A balloon of diameter $20 m$ weighs $100 K g$ . Calculate its payload if it is filled with helium at $1.0 a t m$ and $27^{\circ} C$ . Density of air is $1.2 K g m^{- 3} (R = 0.082 d m^{3} atm K^{- 1} m o l e^{- 1})$

Discussion

38.	In acidic medium the standard reduction potential of NO converted to N2O is 1.59 volt Its standard potential in alkaline medium at 298 K would be
Answer» In acidic medium the standard reduction potential of NO converted to N2O is 1.59 volt Its standard potential in alkaline medium at 298 K would be

Discussion

39.	End products of the following sequence of reactions are:
Answer» End products of the following sequence of reactions are:

Discussion

40.	In the periodic table, metallic elements appear
Answer» In the periodic table, metallic elements appear

Discussion

41.	How to check whether a compound shows isomerism or not ?
Answer» How to check whether a compound shows isomerism or not ?

Discussion

42.	Choose the wrong alternative-(1) Detergents should have small angles of contact(2) Surface tension of liquid is independent of the area of the surface(3) A drop of liquid under no external forces is always spherical in shape (4) None of these
Answer» Choose the wrong alternative-(1) Detergents should have small angles of contact(2) Surface tension of liquid is independent of the area of the surface(3) A drop of liquid under no external forces is always spherical in shape (4) None of these

Discussion

43.	Among the following, for which reaction heat of reaction also represents the bond energy of HF?
Answer» Among the following, for which reaction heat of reaction also represents the bond energy of $H F$ ?

Discussion

44.	If periodic table has total 10 periods then number of subshell present in 8th period will beA 7B 4 C 5D 6
Answer» If periodic table has total 10 periods then number of subshell present in 8th period will be A 7 B 4 C 5 D 6

Discussion

45.	The screening effect of d-electron is
Answer» The screening effect of d-electron is

Discussion

46.	What is williamson synthesis?
Answer» What is williamson synthesis?

Discussion

47.	Inorganic benzene is:
Answer» Inorganic benzene is:

Discussion

48.	Explain what is observed When a beam of light is passed through a colloidal sol ? An electrolyte, NaCl is added to hydrated ferric oxide sol ? Electric current is passed through a colloidal sol ?
Answer» Explain what is observed When a beam of light is passed through a colloidal sol ? An electrolyte, NaCl is added to hydrated ferric oxide sol ? Electric current is passed through a colloidal sol ?

48.

Explain what is observed When a beam of light is passed through a colloidal sol ? An electrolyte, NaCl is added to hydrated ferric oxide sol ? Electric current is passed through a colloidal sol ?

Answer»

Explain what is observed

When a beam of light is passed through a colloidal sol ?

An electrolyte, NaCl is added to hydrated ferric oxide sol ?

Electric current is passed through a colloidal sol ?

Discussion

49.	What is the activation energy for a reaction if its rate doubles when the temperature is raised from 20°C to 35°C? (R=8.314 J mol−1K−1) (Given: log 2=0.3010)
Answer» What is the activation energy for a reaction if its rate doubles when the temperature is raised from $20 ° C to 35 ° C$ ? $(R = 8.314 J m o l^{- 1} K^{- 1})$ $(Given: l o g 2 = 0.3010)$

Discussion

50.	how many monochlorostructural product is formed in CH3-CH(CH3)CH2-CH3
Answer» how many monochlorostructural product is formed in CH3-CH(CH3)CH2-CH3

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

why F^{- } is larger in size than Na^+ even if Na comes in next period?

Why conjugate bases of strong acids have less tendency than water to accept protons in aqueous solution?

Question 17A purple coloured non-metal form a brown solution in alcohol which is applied on wounds as an antiseptic. Name the nonmetal.

Is volume contraction same as change in volume?

The pressure of hydrogen required to make the potential of hydrogen electrode zero in pure water at 298K is(1)10^-4 (2)10^-14 (3)10^-12 (4)10^-10

Which phenomenon is represented by the following diagram ?

The data for the reaction is A + B → C is Exp.[A]0[B]0Initial rate10.0120.0350.1020.0240.0350.8030.0120.0700.1040.0240.0700.80

How relative lovering of vapour pressure is inversely proportional to molecular mass of solute (it is a constant right)?How hydrogen bond is formed btw acetone and chloroform, hydrogen bonding is only possible with hydrogen attached to oxygen, fluorine and nitrogen right?

The average concentration of SO2 in the atmosphere over a city on a certain day is 10 ppm. when the average temperature is 298 K. Given that the solubility of SO2 in water at 298 K is 1.3653 moles litre–1 and the pKa of H2SO3 is 1.92, estimate the pH of rain on that day.

Q. What is path function

what is reformusky reaction

21.rate of reaction increases four times when the temperature changes from 300 Kelvin to 320 Kelvin. Calculate the energy of activation of reaction assuming that it does not change with temperature

which is more acidic CH(CN)2 and CHCl

Why does the C-O bond polarity increases with the increase in no. Of electron releasing groups attached to the carbon containing OH group ?

24. Which graphs not straight line for ideal gas? a)V versus T(n and p constant) b)T versus p(n and V constant) c)p versus 1/V ( n and T constant) d) n versus 1/p(V and T constant)

The volume of atoms (radius r) present in fcc unit cell of metal is:

Give structures of theproducts you would expect when each of the following alcohol reactswith (a) HCl-ZnCl2 (b) HBr and (c) SOCl2. (i) Butan-1-ol (ii) 2-Methylbutan-2-ol

Enthalpy change for the reaction, 4H(g) →2H2 is -869.6 kJ. The dissociation energy of H -H bond is

The number of stereoisomers possible for a compound of the molecular formula CH3—CH=CH—(CHCl)—Me is:

Which of the following compounds has the most negative heat of hydrogenation?

Which of the following elements can not exhibit sp3d hybridisation state:

if Iz+1/zI=3 , then IzImax + IzImin equals to

Which of the following is not a peroxide?

ntA body of mass 4 kg is moving up an inclined plane rising 1 in 40 with velocity 40m/s if efficiency is 50% calculate power requiredn nta) 78.4Wn ntb) 38.4Wn

20 gof magnesium carbonate sample decomposes on heating to give carbon dioxide and 8g of magnesium oxide what will be the percentage purity of magnesium carbonate in the sample

For electron affinity of halogens which of the following is/are correct ?

Germanium or silicon becomes semiconductor due to

A soap bubble is blown slowly at the end of a tube by a pump supplying air at a constant rate. Draw a graph to represent the variation between the excess pressure inside the bubble with time.

Which of the following bond is not present in DNA?

A compound is formed by two elements P and Q. Atoms of Q make HCP lattice and those of the element P occupy all the tetrahedral voids. What is the formula of the compound?

reaction of tertbutyl alcohol with thionyl chloride form retained or inverted product

WHICH OF THE FOLLOWING CONFIGURATION IS ASSOCIATED WITH THE BIGGEST JUMP BETWEEN 2ND AND 3RD IE?A) 1s2 2s2 2p2B) 1s2 2s2 2p6 3s1C) 1s2 2s2 2p6 3s2D) 1s2 2s2 2p1

As we move from NH3 to BiH3 ,basicity should increase or decrease ?

how many benzinoid isomers are possible for C7H8o

The Cannizzaro reaction is not given by:

calculate the percentage ionization of 0.01M acetic acid in 0.1M HCl Ka of acetic acid is 1.8×10^-

A balloon of diameter 20 m weighs 100 Kg. Calculate its payload if it is filled with helium at 1.0 atm and 27∘C. Density of air is 1.2 Kg m−3(R=0.082 dm3 atm K−1 mole−1)

In acidic medium the standard reduction potential of NO converted to N2O is 1.59 volt Its standard potential in alkaline medium at 298 K would be

End products of the following sequence of reactions are:

In the periodic table, metallic elements appear

How to check whether a compound shows isomerism or not ?

Choose the wrong alternative-(1) Detergents should have small angles of contact(2) Surface tension of liquid is independent of the area of the surface(3) A drop of liquid under no external forces is always spherical in shape (4) None of these

Among the following, for which reaction heat of reaction also represents the bond energy of HF?

If periodic table has total 10 periods then number of subshell present in 8th period will beA 7B 4 C 5D 6

The screening effect of d-electron is

What is williamson synthesis?

Inorganic benzene is:

Explain what is observed When a beam of light is passed through a colloidal sol ? An electrolyte, NaCl is added to hydrated ferric oxide sol ? Electric current is passed through a colloidal sol ?

What is the activation energy for a reaction if its rate doubles when the temperature is raised from 20°C to 35°C? (R=8.314 J mol−1K−1) (Given: log 2=0.3010)

how many monochlorostructural product is formed in CH3-CH(CH3)CH2-CH3