46295 + Interview Questions in Chemistry

1.	When propyne is treated with aqueous H2SO4 in the presence of HgSO4 the major product is
Answer» When propyne is treated with aqueous $H_{2} S O_{4}$ in the presence of $H g S O_{4}$ the major product is

Discussion

2.	A compound not likely to be found in photochemical smog is
Answer» A compound not likely to be found in photochemical smog is

Discussion

3.	Lassaigne’s test for the detection of N fails in.
Answer» Lassaigne’s test for the detection of N fails in.

Discussion

4.	Which of the following is most likely to behave as a lewis base?
Answer» Which of the following is most likely to behave as a lewis base?

Discussion

5.	1What are the symbols of atomic structure like wave length, frequency what are the symbols in atomic structure in total
Answer» 1What are the symbols of atomic structure like wave length, frequency what are the symbols in atomic structure in total

Discussion

6.	Explain molecularity?
Answer» Explain molecularity?

Discussion

7.	No of lone pair in NH3
Answer» No of lone pair in NH3

Discussion

8.	Why the hydroxyl group in phenols acts as a electron donating group?
Answer» Why the hydroxyl group in phenols acts as a electron donating group?

Discussion

9.	Sodium Chloride is an ionic compound where as hydrogen chloride is mainly covalent because
Answer» Sodium Chloride is an ionic compound where as hydrogen chloride is mainly covalent because

Discussion

10.	What is the relationship between vant Hoff factor and concentration of solution in molality.
Answer» What is the relationship between vant Hoff factor and concentration of solution in molality.

Discussion

11.	If the value of Ko for a zero order reaction is 2.4×10-². If concentration of the reactant is 0.4 M after 4hours , what will be the initial concentration of the reactant ?
Answer» If the value of Ko for a zero order reaction is 2.4×10-². If concentration of the reactant is 0.4 M after 4hours , what will be the initial concentration of the reactant ?

Discussion

12.	Rashid, is a Commerce graduate passed with 57% marks. He had secured 73% marks in HSC. He has studied Computer Science as one of the subjects at HSC. His date of birth is 22.8.1984
Answer» Rashid, is a Commerce graduate passed with 57% marks. He had secured 73% marks in HSC. He has studied Computer Science as one of the subjects at HSC. His date of birth is 22.8.1984

Discussion

13.	Which of the following will be more acidic?
Answer» Which of the following will be more acidic?

Discussion

14.	The Langmuir adsorption isotherm is deduced using the assumption
Answer» The Langmuir adsorption isotherm is deduced using the assumption

Discussion

15.	Which of the following reactions will give benzaldehyde?
Answer» Which of the following reactions will give benzaldehyde?

Discussion

16.	What is atomic mass unit ?
Answer» What is atomic mass unit ?

Discussion

17.	Which of the following gas is liberated when NaNO3 salt is heated
Answer» Which of the following gas is liberated when $N a N O_{3}$ salt is heated

Discussion

18.	Which of the following complex species is not expected to exhibit optical isomerism?
Answer» Which of the following complex species is not expected to exhibit optical isomerism?

Discussion

19.	Which of the following has maximum root mean square velocity at the same temperature
Answer» Which of the following has maximum root mean square velocity at the same temperature

19.

Which of the following has maximum root mean square velocity at the same temperature

Answer»

Which of the following has maximum root mean square velocity at the same temperature

Discussion

20.	An element has atomic number 29. It belongs to the period x and group y. The value of (2x+y) will be:
Answer» An element has atomic number $29$ . It belongs to the period $x$ and group $y$ . The value of $(2 x + y)$ will be:

Discussion

21.	If T is the absolute temperature of the planet, Ve is the escape velocity from it's surface and R is the universal Gas constant, Then Gas molecular weight M can be retained on the surface of the planet is ? OPTIONS 1)(3RT/M)^1/2 >Ve 2) (3RT/M)^1/2
Answer» If T is the absolute temperature of the planet, Ve is the escape velocity from it's surface and R is the universal Gas constant, Then Gas molecular weight M can be retained on the surface of the planet is ? OPTIONS 1)(3RT/M)^1/2 >Ve 2) (3RT/M)^1/2 4) Ve=0

Discussion

22.	Among Al2O3,SiO2,P2O3 and SO2 the correct order of acid strength is :
Answer» Among $A l_{2} O_{3}, S i O_{2}, P_{2} O_{3}$ and $S O_{2}$ the correct order of acid strength is :

Discussion

23.	At some temperature, the rate constant for the decomposition of HI on a gold surface is 0.08M s−1 . The reaction is 2HI→H2(g)+I2(g) The time taken for the concentration of HI to drop from 1.50 M to 0.06 M is ___ (sec).
Answer» At some temperature, the rate constant for the decomposition of HI on a gold surface is $0.08 M s^{- 1}$ . The reaction is $2 H I \to H_{2} (g) + I_{2} (g)$ The time taken for the concentration of HI to drop from 1.50 M to 0.06 M is ___ (sec).

Discussion

24.	Which of the following has been used in the manufacture of Non-inflammable photographic films?
Answer» Which of the following has been used in the manufacture of Non-inflammable photographic films?

Discussion

25.	A composite metal bar of uniform section is made up of length 25 cm of copper, 10 cm of nickel and 15 cm of aluminium. Each part being in perfect thermal contact with the adjoining part. The copper end of the composite rod is maintained at 100o C and the aluminium end at 0o C. The whole rod is covered with belt so that there is no heat loss occurs at the sides. If KCu=2KAl and KAl=3KNi, then what will be the temperatures of junctions Cu-Ni and Ni-Al respectively
Answer» A composite metal bar of uniform section is made up of length 25 cm of copper, 10 cm of nickel and 15 cm of aluminium. Each part being in perfect thermal contact with the adjoining part. The copper end of the composite rod is maintained at $100^{o} C$ and the aluminium end at $0^{o} C$ . The whole rod is covered with belt so that there is no heat loss occurs at the sides. If $K_{C u} = 2 K_{A l} a n d K_{A l} = 3 K_{N i}$ , then what will be the temperatures of junctions Cu-Ni and Ni-Al respectively

25.

A composite metal bar of uniform section is made up of length 25 cm of copper, 10 cm of nickel and 15 cm of aluminium. Each part being in perfect thermal contact with the adjoining part. The copper end of the composite rod is maintained at 100o C and the aluminium end at 0o C. The whole rod is covered with belt so that there is no heat loss occurs at the sides. If KCu=2KAl and KAl=3KNi, then what will be the temperatures of junctions Cu-Ni and Ni-Al respectively

Answer»

A composite metal bar of uniform section is made up of length 25 cm of copper, 10 cm of nickel and 15 cm of aluminium. Each part being in perfect thermal contact with the adjoining part. The copper end of the composite rod is maintained at $100^{o} C$ and the aluminium end at $0^{o} C$ . The whole rod is covered with belt so that there is no heat loss occurs at the sides. If
$K_{C u} = 2 K_{A l} a n d K_{A l} = 3 K_{N i}$ , then what will be the temperatures of junctions Cu-Ni and Ni-Al respectively

Discussion

26.	The above reaction and reagent are respectively -
Answer» The above reaction and reagent are respectively -

Discussion

27.	The bonds between AMP + Pi and ADP + Pi are
Answer» The bonds between AMP + Pi and ADP + Pi are

Discussion

28.	Gaseous reducing agent which is basic in nature
Answer» Gaseous reducing agent which is basic in nature

Discussion

29.	BF3 and NF3 both molecules are covalent, but BF3 is non-polar and NF3 is polar. Its reason is
Answer» $B F_{3} a n d N F_{3}$ both molecules are covalent, but $B F_{3}$ is non-polar and $N F_{3}$ is polar. Its reason is

Discussion

30.	Assuring Ideal behavior, find out the total pressure exerted by 2gm ethane and 3gm CO2, contained in a vessel of 8 litre capacity at 47∘C
Answer» Assuring Ideal behavior, find out the total pressure exerted by 2gm ethane and 3gm $C O_{2}$ , contained in a vessel of 8 litre capacity at $47^{\circ} C$

Discussion

31.	31 g of phosphorus (P4) and 32g of oxygen (O2) are completely converted into P4O6 and P4O10 respectively, then moles of P4O6 and P4O10 formed respectively will be 1) 1/8,1/8 2) 1/16,3/16 3) 3/16,1/16 4) 5/32,3/32
Answer» 31 g of phosphorus (P4) and 32g of oxygen (O2) are completely converted into P4O6 and P4O10 respectively, then moles of P4O6 and P4O10 formed respectively will be 1) 1/8,1/8 2) 1/16,3/16 3) 3/16,1/16 4) 5/32,3/32

Discussion

32.	MnO2 when fused with KOH and oxidized in air gives a dark green compound X. In acidic X. In acidic solution, X undergoes disproportion to give an intense purple compound Y and MnO2. The compounds X and Y respectively, are
Answer» $M n O_{2}$ when fused with KOH and oxidized in air gives a dark green compound X. In acidic X. In acidic solution, X undergoes disproportion to give an intense purple compound Y and $M n O_{2}$ . The compounds X and Y respectively, are

Discussion

33.	State and explain clearly about the disadvantages of Lewis Acid-Base Theory.
Answer» State and explain clearly about the disadvantages of Lewis Acid-Base Theory.

Discussion

34.	The intermediate formed in the above reaction is:
Answer» The intermediate formed in the above reaction is:

Discussion

35.	Which of the following is a 30 amine?
Answer» Which of the following is a 3⁰ amine?

Discussion

36.	QUESTION 2.1 Define the term solution. How many types of solutions are formed? Write briefly about each type with an example.
Answer» QUESTION 2.1 Define the term solution. How many types of solutions are formed? Write briefly about each type with an example.

36.

QUESTION 2.1 Define the term solution. How many types of solutions are formed? Write briefly about each type with an example.

Answer»

QUESTION 2.1

Define the term solution. How many types of solutions are formed? Write briefly about each type with an example.

Discussion

37.	Compound A(C10H6) liberates 2 mole of CH4 when treated with MeMgBr. On heating with KMnO4 solution, “A” produces benzene dicarboxylic acid which on mononitration produces only one product and no other isomers. The compound “A” can be:
Answer» Compound $A (C_{10} H_{6})$ liberates 2 mole of $C H_{4}$ when treated with MeMgBr. On heating with $K M n O_{4}$ solution, “A” produces benzene dicarboxylic acid which on mononitration produces only one product and no other isomers. The compound “A” can be:

37.

Compound A(C10H6) liberates 2 mole of CH4 when treated with MeMgBr. On heating with KMnO4 solution, “A” produces benzene dicarboxylic acid which on mononitration produces only one product and no other isomers. The compound “A” can be:

Answer»

Compound $A (C_{10} H_{6})$ liberates 2 mole of $C H_{4}$ when treated with MeMgBr. On heating with $K M n O_{4}$ solution, “A” produces benzene dicarboxylic acid which on mononitration produces only one product and no other isomers. The compound “A” can be:

Discussion

38.	Name the energy which arises due to motion of atoms or molecules in a body. How is this energy affected when the temperature is increased?
Answer» Name the energy which arises due to motion of atoms or molecules in a body. How is this energy affected when the temperature is increased?

Discussion

39.	Coordination number for Cu is[AMU 1982]
Answer» Coordination number for Cu is [AMU 1982]

39.

Coordination number for Cu is[AMU 1982]

Answer»

Coordination number for Cu is

[AMU 1982]

Discussion

40.	Heavy water freezes at
Answer» Heavy water freezes at

Discussion

41.	The pH of 10−8 M HCl solution is
Answer» The pH of $10^{- 8}$ M HCl solution is

Discussion

42.	In Balmer series of lines of hydrogen spectrum, the third line from the red end corresponds to which one of th e following inner orbit jumps of the electron for bohr orbits in an atom of hydrogen? A.3->2 B. 5->2 C. 4->1 D. 2->5
Answer» In Balmer series of lines of hydrogen spectrum, the third line from the red end corresponds to which one of th e following inner orbit jumps of the electron for bohr orbits in an atom of hydrogen? A.3->2 B. 5->2 C. 4->1 D. 2->5

42.

In Balmer series of lines of hydrogen spectrum, the third line from the red end corresponds to which one of th e following inner orbit jumps of the electron for bohr orbits in an atom of hydrogen? A.3->2 B. 5->2 C. 4->1 D. 2->5

Answer»

In Balmer series of lines of hydrogen spectrum, the third line from the red end corresponds to which one of th e following inner orbit jumps of the electron for bohr orbits in an atom of hydrogen?

A.3->2

B. 5->2

C. 4->1

D. 2->5

Discussion

43.	Question 11 Total number of orbitals associated with third shell will be.............. (a) 2 (b) 4 (c) 9 (d) 3
Answer» Question 11 Total number of orbitals associated with third shell will be.............. (a) 2 (b) 4 (c) 9 (d) 3

43.

Question 11 Total number of orbitals associated with third shell will be.............. (a) 2 (b) 4 (c) 9 (d) 3

Answer»

Question 11

Total number of orbitals associated with third shell will be..............

(a) 2 (b) 4 (c) 9 (d) 3

Discussion

44.	Which does not respond to iodoform test?
Answer» Which does not respond to iodoform test?

Discussion

45.	A carbonyl compound P, which gives positive iodoform test, undergoes reaction with MeMgBr followed by dehydration to give an olefin Q. Ozonolysis of Q leads to a dicarbonyl compound R, which undergoes intra-molecular aldol reaction to give predominantly S. The structures of the products S, is
Answer» A carbonyl compound P, which gives positive iodoform test, undergoes reaction with MeMgBr followed by dehydration to give an olefin Q. Ozonolysis of Q leads to a dicarbonyl compound R, which undergoes intra-molecular aldol reaction to give predominantly S. The structures of the products S, is

Discussion

46.	The formal charges on different atoms in lewis structure of N−3 are
Answer» The formal charges on different atoms in lewis structure of $N_{3}^{-}$ are

Discussion

47.	If 3.01×1020 molecules are removed from 98 mg of H2SO4, then the number of moles of H2SO4 left are:
Answer» If $3.01 \times 10^{20}$ molecules are removed from 98 mg of $H_{2} S O_{4}$ , then the number of moles of $H_{2} S O_{4}$ left are:

Discussion

48.	Question 02 Polarity in a molecule and hence the dipole moment depends primarily on electronegativity of the constituent atoms and shape of a molecule. Which of the following has the highest dipole moment? (a) CO2 (b) HI (c) H2O (d) SO2
Answer» Question 02 Polarity in a molecule and hence the dipole moment depends primarily on electronegativity of the constituent atoms and shape of a molecule. Which of the following has the highest dipole moment? (a) $C O_{2}$ (b) HI (c) $H_{2} O$ (d) $S O_{2}$

48.

Question 02 Polarity in a molecule and hence the dipole moment depends primarily on electronegativity of the constituent atoms and shape of a molecule. Which of the following has the highest dipole moment? (a) CO2 (b) HI (c) H2O (d) SO2

Answer»

Question 02

Polarity in a molecule and hence the dipole moment depends primarily on electronegativity of the constituent atoms and shape of a molecule. Which of the following has the highest dipole moment?

(a) $C O_{2}$

(b) HI

(c) $H_{2} O$

(d) $S O_{2}$

Discussion

49.	Which among the following is used as an antiseptic?
Answer» Which among the following is used as an antiseptic?

Discussion

50.	Which of the following aqueous solution has the highest freezing point?
Answer» Which of the following aqueous solution has the highest freezing point?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

When propyne is treated with aqueous H2SO4 in the presence of HgSO4 the major product is

A compound not likely to be found in photochemical smog is

Lassaigne’s test for the detection of N fails in.

Which of the following is most likely to behave as a lewis base?

1What are the symbols of atomic structure like wave length, frequency what are the symbols in atomic structure in total

Explain molecularity?

No of lone pair in NH3

Why the hydroxyl group in phenols acts as a electron donating group?

Sodium Chloride is an ionic compound where as hydrogen chloride is mainly covalent because

What is the relationship between vant Hoff factor and concentration of solution in molality.

If the value of Ko for a zero order reaction is 2.4×10-². If concentration of the reactant is 0.4 M after 4hours , what will be the initial concentration of the reactant ?

Rashid, is a Commerce graduate passed with 57% marks. He had secured 73% marks in HSC. He has studied Computer Science as one of the subjects at HSC. His date of birth is 22.8.1984

Which of the following will be more acidic?

The Langmuir adsorption isotherm is deduced using the assumption

Which of the following reactions will give benzaldehyde?

What is atomic mass unit ?

Which of the following gas is liberated when NaNO3 salt is heated

Which of the following complex species is not expected to exhibit optical isomerism?

Which of the following has maximum root mean square velocity at the same temperature

An element has atomic number 29. It belongs to the period x and group y. The value of (2x+y) will be:

If T is the absolute temperature of the planet, Ve is the escape velocity from it's surface and R is the universal Gas constant, Then Gas molecular weight M can be retained on the surface of the planet is ? OPTIONS 1)(3RT/M)^1/2 >Ve 2) (3RT/M)^1/2

Among Al2O3,SiO2,P2O3 and SO2 the correct order of acid strength is :

At some temperature, the rate constant for the decomposition of HI on a gold surface is 0.08M s−1 . The reaction is 2HI→H2(g)+I2(g) The time taken for the concentration of HI to drop from 1.50 M to 0.06 M is ___ (sec).

Which of the following has been used in the manufacture of Non-inflammable photographic films?

The above reaction and reagent are respectively -

The bonds between AMP + Pi and ADP + Pi are

Gaseous reducing agent which is basic in nature

BF3 and NF3 both molecules are covalent, but BF3 is non-polar and NF3 is polar. Its reason is

Assuring Ideal behavior, find out the total pressure exerted by 2gm ethane and 3gm CO2, contained in a vessel of 8 litre capacity at 47∘C

31 g of phosphorus (P4) and 32g of oxygen (O2) are completely converted into P4O6 and P4O10 respectively, then moles of P4O6 and P4O10 formed respectively will be 1) 1/8,1/8 2) 1/16,3/16 3) 3/16,1/16 4) 5/32,3/32

MnO2 when fused with KOH and oxidized in air gives a dark green compound X. In acidic X. In acidic solution, X undergoes disproportion to give an intense purple compound Y and MnO2. The compounds X and Y respectively, are

State and explain clearly about the disadvantages of Lewis Acid-Base Theory.

The intermediate formed in the above reaction is:

Which of the following is a 30 amine?

QUESTION 2.1 Define the term solution. How many types of solutions are formed? Write briefly about each type with an example.

Compound A(C10H6) liberates 2 mole of CH4 when treated with MeMgBr. On heating with KMnO4 solution, “A” produces benzene dicarboxylic acid which on mononitration produces only one product and no other isomers. The compound “A” can be:

Name the energy which arises due to motion of atoms or molecules in a body. How is this energy affected when the temperature is increased?

Coordination number for Cu is[AMU 1982]

Heavy water freezes at

The pH of 10−8 M HCl solution is

In Balmer series of lines of hydrogen spectrum, the third line from the red end corresponds to which one of th e following inner orbit jumps of the electron for bohr orbits in an atom of hydrogen? A.3-&gt;2 B. 5-&gt;2 C. 4-&gt;1 D. 2-&gt;5

Question 11 Total number of orbitals associated with third shell will be.............. (a) 2 (b) 4 (c) 9 (d) 3

Which does not respond to iodoform test?

A carbonyl compound P, which gives positive iodoform test, undergoes reaction with MeMgBr followed by dehydration to give an olefin Q. Ozonolysis of Q leads to a dicarbonyl compound R, which undergoes intra-molecular aldol reaction to give predominantly S. The structures of the products S, is

The formal charges on different atoms in lewis structure of N−3 are

If 3.01×1020 molecules are removed from 98 mg of H2SO4, then the number of moles of H2SO4 left are:

Question 02 Polarity in a molecule and hence the dipole moment depends primarily on electronegativity of the constituent atoms and shape of a molecule. Which of the following has the highest dipole moment? (a) CO2 (b) HI (c) H2O (d) SO2

Which among the following is used as an antiseptic?

Which of the following aqueous solution has the highest freezing point?

In Balmer series of lines of hydrogen spectrum, the third line from the red end corresponds to which one of th e following inner orbit jumps of the electron for bohr orbits in an atom of hydrogen? A.3->2 B. 5->2 C. 4->1 D. 2->5