46295 + Interview Questions in Chemistry

1.	Lysine, H2N−(CH2)4−CH\|NH2−COOH is ......... . (a) α− amino acid (b) basic amino acid (c) amino acid synthesised in body (d) β−amino acid
Answer» Lysine, $H_{2} N - (C H_{2})_{4} - C H \| N H_{2} - C O O H$ is ......... . (a) $α -$ amino acid (b) basic amino acid (c) amino acid synthesised in body (d) $β -$ amino acid

Discussion

2.	A solution of two substances A and B was formed (mole fractions are xA & xB). It was found that the mole fraction of A in vapour phase (yA) was twice of xA. This is only possible if
Answer» A solution of two substances A and B was formed (mole fractions are $x_{A}$ & $x_{B}$ ). It was found that the mole fraction of A in vapour phase ( $y_{A}$ ) was twice of $x_{A}$ . This is only possible if

Discussion

3.	Question 1How many structural isomers can you draw for pentane?
Answer» Question 1 How many structural isomers can you draw for pentane?

Discussion

4.	Correct relation between current gain of common base (α) and common collector (β) configuration of a transistor is
Answer» Correct relation between current gain of common base ( $α$ ) and common collector $(β)$ configuration of a transistor is

Discussion

5.	Select the correct order used in extraction of Metals
Answer» Select the correct order used in extraction of Metals

Discussion

6.	The freezing point of a solution containing 50 cm3 of ethylene glycol in 50 g of water is found to be −34∘C. Assuming ideal behavior, calculate the density of ethylene glycol (Kfforwater=1.86Kkgmol−1).
Answer» The freezing point of a solution containing 50 cm3 of ethylene glycol in 50 g of water is found to be $- 34^{\circ} C$ . Assuming ideal behavior, calculate the density of ethylene glycol $(K_{f} f o r w a t e r = 1.86 K k g m o l^{-} 1)$ .

Discussion

7.	Question 55Draw the possible isomers of the compound with molecular formula C3H6O and also give their electron dot structures.
Answer» Question 55 Draw the possible isomers of the compound with molecular formula $C_{3} H_{6} O$ and also give their electron dot structures.

Discussion

8.	Solid H2O2 has non planar and non linear structure based on
Answer» Solid $H_{2}$ $O_{2}$ has non planar and non linear structure based on

Discussion

9.	In 1 L saturated solution of AgCl[Ksp(AgCl)=1.6×10−10], 0.1 mole of CuCl[Kp(CuCl)=1.0×10−6] is added. The resultant concentration of Ag+ in the solution is 1.6×10−x. The value of 'x' is ___
Answer» In 1 L saturated solution of $A g C l [K_{s p} (A g C l) = 1.6 \times 10^{- 10}],$ 0.1 mole of $C u C l [K_{p (C u C l)} = 1.0 \times 10^{- 6}]$ is added. The resultant concentration of $A g^{+}$ in the solution is $1.6 \times 10^{- x} .$ The value of 'x' is ___

Discussion

10.	The efficiency of heat engine is maximum when:
Answer» The efficiency of heat engine is maximum when:

Discussion

11.	how many geometrical isomers are possible for ch3-ch=c=ch-ch=ch-ch
Answer» how many geometrical isomers are possible for ch3-ch=c=ch-ch=ch-ch

Discussion

12.	19. A liquid was mixed with ethanol and a drop of concentrated sulphuric acid was added a compound with a fruity smell was formed the liquid was 1) methanol 2) formaldehyde 3) acetone 4) ethanoic acid
Answer» 19. A liquid was mixed with ethanol and a drop of concentrated sulphuric acid was added a compound with a fruity smell was formed the liquid was 1) methanol 2) formaldehyde 3) acetone 4) ethanoic acid

Discussion

13.	A 5.0 cm long straight piece of thread is kept on the surface of water. Find the force with which the surface on one side of the thread pulls it. Surface tension of water = 0.076Nm−1.
Answer» A 5.0 cm long straight piece of thread is kept on the surface of water. Find the force with which the surface on one side of the thread pulls it. Surface tension of water = $0.076 N m^{- 1}$ .

Discussion

14.	What are carbocations.
Answer» What are carbocations.

Discussion

15.	An organic compound CxH2yOy was burnt with twice the amount of oxygen needed for complete combustion to CO2 and H2O. The hot gases when cooled to 0°C and 1 atm pressure, measured 2.24 L. The water collected during cooling weighed 0.9 g. The vapour pressure of pure water at 20°C is 17.5 mm Hg and is lowered by 0.104 mm when 50 g of the organic compound is dissolved in 1000 g of water. Give the molecular formula of the organic compound.
Answer» An organic compound $C_{x} H_{2 y} O_{y}$ was burnt with twice the amount of oxygen needed for complete combustion to $C O_{2}$ and $H_{2} O$ . The hot gases when cooled to 0°C and 1 atm pressure, measured 2.24 L. The water collected during cooling weighed 0.9 g. The vapour pressure of pure water at 20°C is 17.5 mm Hg and is lowered by 0.104 mm when 50 g of the organic compound is dissolved in 1000 g of water. Give the molecular formula of the organic compound.

Discussion

16.	7. Balance the given skeleton equation: KMnO4+HCl⟶KCl+MnCl2+H2O+Cl2
Answer» 7. Balance the given skeleton equation: $K M n O_{4} + H C l ⟶ K C l + M n {C l}_{2} + H_{2} O + {C l}_{2}$

16.

7. Balance the given skeleton equation: KMnO4+HCl⟶KCl+MnCl2+H2O+Cl2

Answer»

7. Balance the given skeleton equation:

$K M n O_{4} + H C l ⟶ K C l + M n {C l}_{2} + H_{2} O + {C l}_{2}$

Discussion

17.	Which one of the following elements is unable to form MF_6^{-3} ion ? 1) Ga 2) Al 3) In 4)
Answer» Which one of the following elements is unable to form MF_6^{-3} ion ? 1) Ga 2) Al 3) In 4)

Discussion

18.	21.Show the cross between AABBCC (darkbcolour) and aa bb cc (light colour)
Answer» 21.Show the cross between AABBCC (darkbcolour) and aa bb cc (light colour)

Discussion

19.	The number of moles of KMnO4 that will be needed to react completely with one mole of ferrous oxalate in an acidic solution is:
Answer» The number of moles of $K M n O_{4}$ that will be needed to react completely with one mole of ferrous oxalate in an acidic solution is:

Discussion

20.	Glycogen is:
Answer» Glycogen is:

Discussion

21.	Which of the following is not physical equilibrium?
Answer» Which of the following is not physical equilibrium?

Discussion

22.	14 How many sigma and pi bond in ethyl acetoacetate
Answer» 14 How many sigma and pi bond in ethyl acetoacetate

Discussion

23.	Identify the type of the underlined phrase. After the nasty fall, I swore not to wear laced shoes again.
Answer» Identify the type of the underlined phrase. After the nasty fall, I swore not to wear laced shoes again.

23.

Identify the type of the underlined phrase. After the nasty fall, I swore not to wear laced shoes again.

Answer»

Identify the type of the underlined phrase.

After the nasty fall, I swore not to wear laced shoes again.

Discussion

24.	Convert Methyl Bromide to butanol
Answer» Convert Methyl Bromide to butanol

Discussion

25.	A certain amount of a metal whose equivalent mass is 28 displaces 0.7l of H2 at STP from an acid hence mass of the element is
Answer» A certain amount of a metal whose equivalent mass is 28 displaces 0.7l of H2 at STP from an acid hence mass of the element is

Discussion

26.	Which of the following compounds may not exist as enantiomers ?
Answer» Which of the following compounds may not exist as enantiomers ?

Discussion

27.	A decimolar solution of potassium ferrocynide is 50% dissociated at 300 K. Given S=8.314JK−1 mol−1. The osmotic pressure of the solution is :
Answer» A decimolar solution of potassium ferrocynide is $50 %$ dissociated at 300 K. Given $S = 8.314 J K^{- 1} m o l^{- 1}$ . The osmotic pressure of the solution is :

Discussion

28.	Acetic acid dissolved in benzene shows a molecular weight of:
Answer» Acetic acid dissolved in benzene shows a molecular weight of:

Discussion

29.	The general outermost shell electronic configuration for Lanthanoids is:
Answer» The general outermost shell electronic configuration for Lanthanoids is:

Discussion

30.	Only one type of hydrocarbon is formed by wurtz reaction of
Answer» Only one type of hydrocarbon is formed by wurtz reaction of

Discussion

31.	An open flask containing air is heated from 300 K to 500 K. What percentage of air will be escaped to the atmosphere, if pressure is keeping constant?
Answer» An open flask containing air is heated from $300 K$ to $500 K$ . What percentage of air will be escaped to the atmosphere, if pressure is keeping constant?

Discussion

32.	Acompound containing two ―OHgroups attached with one carbon atom is unstable but which one of the followingis stable?
Answer» A compound containing two ―OH groups attached with one carbon atom is unstable but which one of the following is stable?

Discussion

33.	why 1 chloro cyclopen†an e and 2 bromo bu†an e show same products in SN1 and SN2 REACTIONS
Answer» why 1 chloro cyclopen†an e and 2 bromo bu†an e show same products in SN1 and SN2 REACTIONS

Discussion

34.	Total number of nodes, angular nodes and the radial nodes in case of 4f orbital respectively are
Answer» Total number of nodes, angular nodes and the radial nodes in case of 4f orbital respectively are

Discussion

35.	The product formed when benzene is nitrated by fuming nitric acid is [MP PMT 1979]
Answer» The product formed when benzene is nitrated by fuming nitric acid is [MP PMT 1979]

35.

The product formed when benzene is nitrated by fuming nitric acid is [MP PMT 1979]

Answer»

The product formed when benzene is nitrated by fuming nitric acid is

[MP PMT 1979]

Discussion

36.	The electrochemical equivalent of silver 0.0011180 g. When an electric current of0.5 ampere is passed through an aqueous silver nitrate solution for 200 sec., the amount of silver deposited is(1) 1.1180 g(3) 5.590g) 0.11180 g(4) 0.5590 g
Answer» The electrochemical equivalent of silver 0.0011180 g. When an electric current of0.5 ampere is passed through an aqueous silver nitrate solution for 200 sec., the amount of silver deposited is(1) 1.1180 g(3) 5.590g) 0.11180 g(4) 0.5590 g

Discussion

37.	1.A compound was found to contain 14.34% oxygen . The minimum molecular weight of the compound is? 2.what volume of CO is required to reduce one mole of Fe2O3 in the following reaction: Fe2O3+CO. Give rise to Fe+CO2
Answer» 1.A compound was found to contain 14.34% oxygen . The minimum molecular weight of the compound is? 2.what volume of CO is required to reduce one mole of Fe2O3 in the following reaction: Fe2O3+CO. Give rise to Fe+CO2

Discussion

38.	Bond breaking and bond making takes place in a single step in reaction.
Answer» Bond breaking and bond making takes place in a single step in reaction.

Discussion

39.	28. What is the dipole moment order for (CH3Cl);(CH2Cl2);(CHCl3);(CCl4)
Answer» 28. What is the dipole moment order for (CH3Cl);(CH2Cl2);(CHCl3);(CCl4)

Discussion

40.	13. NH3 converts into N2 and H2 according to the following equation:-2NH3 = N2 + 3H2. x% of NH3 is converted into product. Rate if diffusion of gaseous mixture is double than that of SO2 under identical conditions. Calculate x. 1)98.23% 2)31.25% 3)25.27% 4)6.25%
Answer» 13. NH3 converts into N2 and H2 according to the following equation:-2NH3 = N2 + 3H2. x% of NH3 is converted into product. Rate if diffusion of gaseous mixture is double than that of SO2 under identical conditions. Calculate x. 1)98.23% 2)31.25% 3)25.27% 4)6.25%

Discussion

41.	Choose the incorrect combination.ΔHΔSTemperatureSpontaneityI.⊕ve⊖veAny temperatureNon-spontaneousII.⊖ve⊖veLow temperatureNon-spontaneousIII.⊕ve⊕veLow temperatureSpontaneousIV.⊖ve⊕veAny temperatureSpontaneous
Answer» Choose the incorrect combination. $\begin{matrix} Δ H & Δ S & Temperature & Spontaneity I. & \oplus v e & ⊖ v e & Any temperature & Non-spontaneous II. & ⊖ v e & ⊖ v e & Low temperature & Non-spontaneous III. & \oplus v e & \oplus v e & Low temperature & Spontaneous IV. & ⊖ v e & \oplus v e & Any temperature & Spontaneous \end{matrix}$

Discussion

42.	17. The vapour pressure of a solution in benzene is 722mm and that of solvent is 760mm. What is the Molality of the solution
Answer» 17. The vapour pressure of a solution in benzene is 722mm and that of solvent is 760mm. What is the Molality of the solution

Discussion

43.	Show that : A ∩ ( B △ C) = (A ∩ B) △ ( A ∩C).
Answer» Show that : A ∩ ( B △ C) = (A ∩ B) △ ( A ∩ C).

Discussion

44.	9 IF two sets a and b such that n(a) =15 and n(b)= 25 then the no. Of element in the range of a symmetric difference to b ??
Answer» 9 IF two sets a and b such that n(a) =15 and n(b)= 25 then the no. Of element in the range of a symmetric difference to b ??

Discussion

45.	The correct order of electronegativity is:
Answer» The correct order of electronegativity is:

Discussion

46.	Change in volume of the system does not alter which of the following equilibria?
Answer» Change in volume of the system does not alter which of the following equilibria?

Discussion

47.	The maximum number of 180^° angle possible between X-M-X bond for compounds with spd and sdd hybridization respectively are 1) 3,3 2) 3,1 3) 1,3 4) 3,0
Answer» The maximum number of 180^° angle possible between X-M-X bond for compounds with spd and sdd hybridization respectively are 1) 3,3 2) 3,1 3) 1,3 4) 3,0

Discussion

48.	A potter working on his wheel shaped a lump of clay into a pot. He then baked the pot in an oven. Do these two acts lead to the same kind of changes or different? Give your opinion and justify your answer.
Answer» A potter working on his wheel shaped a lump of clay into a pot. He then baked the pot in an oven. Do these two acts lead to the same kind of changes or different? Give your opinion and justify your answer.

Discussion

49.	29. Give the mechanism for formation of diazoniumsalt when bemzene reacts with NaNO2 and HCl
Answer» 29. Give the mechanism for formation of diazoniumsalt when bemzene reacts with NaNO2 and HCl

Discussion

50.	The initial speed of an arrow shot from a bow, at an elevation of 30°, is 20 m/s, then its speed when it hits the ground back
Answer» The initial speed of an arrow shot from a bow, at an elevation of 30°, is 20 m/s, then its speed when it hits the ground back

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

Lysine, H2N−(CH2)4−CH|NH2−COOH is ......... . (a) α− amino acid (b) basic amino acid (c) amino acid synthesised in body (d) β−amino acid

A solution of two substances A and B was formed (mole fractions are xA &amp; xB). It was found that the mole fraction of A in vapour phase (yA) was twice of xA. This is only possible if

Question 1How many structural isomers can you draw for pentane?

Correct relation between current gain of common base (α) and common collector (β) configuration of a transistor is

Select the correct order used in extraction of Metals

The freezing point of a solution containing 50 cm3 of ethylene glycol in 50 g of water is found to be −34∘C. Assuming ideal behavior, calculate the density of ethylene glycol (Kfforwater=1.86Kkgmol−1).

Question 55Draw the possible isomers of the compound with molecular formula C3H6O and also give their electron dot structures.

Solid H2O2 has non planar and non linear structure based on

In 1 L saturated solution of AgCl[Ksp(AgCl)=1.6×10−10], 0.1 mole of CuCl[Kp(CuCl)=1.0×10−6] is added. The resultant concentration of Ag+ in the solution is 1.6×10−x. The value of 'x' is ___

The efficiency of heat engine is maximum when:

how many geometrical isomers are possible for ch3-ch=c=ch-ch=ch-ch

19. A liquid was mixed with ethanol and a drop of concentrated sulphuric acid was added a compound with a fruity smell was formed the liquid was 1) methanol 2) formaldehyde 3) acetone 4) ethanoic acid

A 5.0 cm long straight piece of thread is kept on the surface of water. Find the force with which the surface on one side of the thread pulls it. Surface tension of water = 0.076Nm−1.

What are carbocations.

7. Balance the given skeleton equation: KMnO4+HCl⟶KCl+MnCl2+H2O+Cl2

Which one of the following elements is unable to form MF_6^{-3} ion ? 1) Ga 2) Al 3) In 4)

21.Show the cross between AABBCC (darkbcolour) and aa bb cc (light colour)

The number of moles of KMnO4 that will be needed to react completely with one mole of ferrous oxalate in an acidic solution is:

Glycogen is:

Which of the following is not physical equilibrium?

14 How many sigma and pi bond in ethyl acetoacetate

Identify the type of the underlined phrase. After the nasty fall, I swore not to wear laced shoes again.

Convert Methyl Bromide to butanol

A certain amount of a metal whose equivalent mass is 28 displaces 0.7l of H2 at STP from an acid hence mass of the element is

Which of the following compounds may not exist as enantiomers ?

A decimolar solution of potassium ferrocynide is 50% dissociated at 300 K. Given S=8.314JK−1 mol−1. The osmotic pressure of the solution is :

Acetic acid dissolved in benzene shows a molecular weight of:

The general outermost shell electronic configuration for Lanthanoids is:

Only one type of hydrocarbon is formed by wurtz reaction of

An open flask containing air is heated from 300 K to 500 K. What percentage of air will be escaped to the atmosphere, if pressure is keeping constant?

Acompound containing two ―OHgroups attached with one carbon atom is unstable but which one of the followingis stable?

why 1 chloro cyclopen†an e and 2 bromo bu†an e show same products in SN1 and SN2 REACTIONS

Total number of nodes, angular nodes and the radial nodes in case of 4f orbital respectively are

The product formed when benzene is nitrated by fuming nitric acid is [MP PMT 1979]

The electrochemical equivalent of silver 0.0011180 g. When an electric current of0.5 ampere is passed through an aqueous silver nitrate solution for 200 sec., the amount of silver deposited is(1) 1.1180 g(3) 5.590g) 0.11180 g(4) 0.5590 g

1.A compound was found to contain 14.34% oxygen . The minimum molecular weight of the compound is? 2.what volume of CO is required to reduce one mole of Fe2O3 in the following reaction: Fe2O3+CO. Give rise to Fe+CO2

Bond breaking and bond making takes place in a single step in reaction.

28. What is the dipole moment order for (CH3Cl);(CH2Cl2);(CHCl3);(CCl4)

13. NH3 converts into N2 and H2 according to the following equation:-2NH3 = N2 + 3H2. x% of NH3 is converted into product. Rate if diffusion of gaseous mixture is double than that of SO2 under identical conditions. Calculate x. 1)98.23% 2)31.25% 3)25.27% 4)6.25%

Choose the incorrect combination.ΔHΔSTemperatureSpontaneityI.⊕ve⊖veAny temperatureNon-spontaneousII.⊖ve⊖veLow temperatureNon-spontaneousIII.⊕ve⊕veLow temperatureSpontaneousIV.⊖ve⊕veAny temperatureSpontaneous

17. The vapour pressure of a solution in benzene is 722mm and that of solvent is 760mm. What is the Molality of the solution

Show that : A ∩ ( B △ C) = (A ∩ B) △ ( A ∩C).

9 IF two sets a and b such that n(a) =15 and n(b)= 25 then the no. Of element in the range of a symmetric difference to b ??

The correct order of electronegativity is:

Change in volume of the system does not alter which of the following equilibria?

The maximum number of 180^° angle possible between X-M-X bond for compounds with spd and sdd hybridization respectively are 1) 3,3 2) 3,1 3) 1,3 4) 3,0

A potter working on his wheel shaped a lump of clay into a pot. He then baked the pot in an oven. Do these two acts lead to the same kind of changes or different? Give your opinion and justify your answer.

29. Give the mechanism for formation of diazoniumsalt when bemzene reacts with NaNO2 and HCl

The initial speed of an arrow shot from a bow, at an elevation of 30°, is 20 m/s, then its speed when it hits the ground back

A solution of two substances A and B was formed (mole fractions are xA & xB). It was found that the mole fraction of A in vapour phase (yA) was twice of xA. This is only possible if