10223 + Interview Questions in Chemistry Page 57 InterviewSolution

2801.	Question 23Find out the valency of the atoms represented by the figure (a) and (b).
Answer» Question 23 Find out the valency of the atoms represented by the figure (a) and (b).

Discussion

2802.	Is it necessary that the combination reaction has only one product?
Answer» Is it necessary that the combination reaction has only one product?

Discussion

2803.	27. The r.m.s speed of a molecule of enclosed gas is V. What will be tge rms speed if pressure is doubled keeping the temperature same?
Answer» 27. The r.m.s speed of a molecule of enclosed gas is V. What will be tge rms speed if pressure is doubled keeping the temperature same?

Discussion

2804.	In a biogas plant, methane gas (CH4) is produced as a fuel. Find the mass ratio of carbon to hydrogen in methane.
Answer» In a biogas plant, methane gas ( $C H_{4}$ ) is produced as a fuel. Find the mass ratio of carbon to hydrogen in methane.

Discussion

2805.	Which of the following represent the suitable conditions for the liquefaction of gases? (a) low temperature, low pressure (b) high temperature, low pressure (c) low temperature, high pressure (d) high temperature, high pressure
Answer» Which of the following represent the suitable conditions for the liquefaction of gases? (a) low temperature, low pressure (b) high temperature, low pressure (c) low temperature, high pressure (d) high temperature, high pressure

2805.

Which of the following represent the suitable conditions for the liquefaction of gases? (a) low temperature, low pressure (b) high temperature, low pressure (c) low temperature, high pressure (d) high temperature, high pressure

Answer»

Which of the following represent the suitable conditions for the liquefaction of gases?

(a) low temperature, low pressure (b) high temperature, low pressure

(c) low temperature, high pressure (d) high temperature, high pressure

Discussion

2806.	Question 1 On the basis of Thomson’s model of an atom, explain how the atom is neutral as a whole?
Answer» Question 1 On the basis of Thomson’s model of an atom, explain how the atom is neutral as a whole?

Discussion

2807.	A collapsible balloon is inflated to a volume of 10 L at a pressure of 1 atm. When the balloon is immersed to the bottom of a lake, its volume reduces to 1.25 L. Assuming 1 atm pressure to be equivalent to 10 m column of water and no change in temperature, the depth of the lake will be
Answer» A collapsible balloon is inflated to a volume of 10 L at a pressure of 1 atm. When the balloon is immersed to the bottom of a lake, its volume reduces to 1.25 L. Assuming 1 atm pressure to be equivalent to 10 m column of water and no change in temperature, the depth of the lake will be

Discussion

2808.	Which methods will you use to separate the following mixtures?a. water and sugarb. sand and waterc. sand and salt
Answer» Which methods will you use to separate the following mixtures? a. water and sugar b. sand and water c. sand and salt

Discussion

2809.	2CO2 (g)+2H2(g) −−→ 2CO(g)+ 2H2O(g)In this reaction gets oxidised and gets reduced.
Answer» $2 {CO}_{2} (g) + 2 H_{2} (g) - - \to 2 CO (g) + 2 H_{2} O (g)$ In this reaction gets oxidised and gets reduced.

Discussion

2810.	The elrctric field at 2R from the centre of uniform charge non conducting sphere of radius R is E. The electric field at a distance R/2 from the centre is
Answer» The elrctric field at 2R from the centre of uniform charge non conducting sphere of radius R is E. The electric field at a distance R/2 from the centre is

Discussion

2811.	25.Derive the value of R in terms of calorie
Answer» 25.Derive the value of R in terms of calorie

Discussion

2812.	What is the mass of sulphur that would react with 5 g of iron to form ferrous sulphide (FeS)?2.8
Answer» What is the mass of sulphur that would react with 5 g of iron to form ferrous sulphide $(FeS)$ ? 2.8

Discussion

2813.	Is sponge compressible
Answer» Is sponge compressible

Discussion

2814.	Three oxides of lead contain 92.83% ,90.65% and 86.10% lead. Prove that the law of multiple proportions is verified from these data.
Answer» Three oxides of lead contain 92.83% ,90.65% and 86.10% lead. Prove that the law of multiple proportions is verified from these data.

Discussion

2815.	a binary solid (A+B-)has fcc structure with B- ions constituting the lattice and A+ ions occupying 25% tetrahedral holes.the formula of solid is?
Answer» a binary solid (A+B-)has fcc structure with B- ions constituting the lattice and A+ ions occupying 25% tetrahedral holes.the formula of solid is?

Discussion

2816.	50. What is the n factor to be used in faraday s equation for electrolysis of water. It is given as 4 but I think it should be 2
Answer» 50. What is the n factor to be used in faraday s equation for electrolysis of water. It is given as 4 but I think it should be 2

Discussion

2817.	The velocity of a particle at any time t is given by v=bt+a/t where a and b are constant. The dimension of a/b is
Answer» The velocity of a particle at any time t is given by v=bt+a/t where a and b are constant. The dimension of a/b is

Discussion

2818.	a stationary nucleus of mass m emits gamma radiation of energy E. if c is speed of light in vacuum,then recoil energy of nucleus will be?
Answer» a stationary nucleus of mass m emits gamma radiation of energy E. if c is speed of light in vacuum,then recoil energy of nucleus will be?

Discussion

2819.	What is atomicity? Explain with example.
Answer» What is atomicity? Explain with example.

Discussion

2820.	Two beams of protons moving with velocity v1 and v2 are allowed to enter parallel to each other in a field free region. the ratio of magnetic force and electrostatic force exerted between the two beams is given by
Answer» Two beams of protons moving with velocity v1 and v2 are allowed to enter parallel to each other in a field free region. the ratio of magnetic force and electrostatic force exerted between the two beams is given by

Discussion

2821.	Question 6 Summarise the rules for writing of distribution of electrons in various shells for the first eighteen elements.
Answer» Question 6 Summarise the rules for writing of distribution of electrons in various shells for the first eighteen elements.

Discussion

2822.	Match the following with their units.
Answer» Match the following with their units.

Discussion

2823.	sodium generally does not show oxidation of +2. because of its:1. high first ionization potential2. high second ionization potential3. large ionic radius4. high electronegativity
Answer» sodium generally does not show oxidation of +2. because of its: 1. high first ionization potential 2. high second ionization potential 3. large ionic radius 4. high electronegativity

Discussion

2824.	helium atom is two times heavier than hydrogen molecule.At 25^° C,the kinetic energy of He atom i
Answer» helium atom is two times heavier than hydrogen molecule.At 25^° C,the kinetic energy of He atom i

Discussion

2825.	Why is ice at 273k is more effective in cooling than water at same temperature?
Answer» Why is ice at 273k is more effective in cooling than water at same temperature?

Discussion

2826.	In an atom, an electron is moving with a speed of 600 m/sec with an accuracy of 0.005%. Certainty with which the position of the electron can be located is:(h = 6.6 × 10−34 kg m3 s−1, mass of electron me = 9.1 × 10−31 kg)
Answer» In an atom, an electron is moving with a speed of 600 m/sec with an accuracy of 0.005%. Certainty with which the position of the electron can be located is: (h = 6.6 $\times$ $10^{- 34}$ kg $m^{3}$ $s^{- 1}$ , mass of electron $m_{e}$ = 9.1 $\times$ $10^{- 31}$ kg)

2826.

In an atom, an electron is moving with a speed of 600 m/sec with an accuracy of 0.005%. Certainty with which the position of the electron can be located is:(h = 6.6 × 10−34 kg m3 s−1, mass of electron me = 9.1 × 10−31 kg)

Answer»

In an atom, an electron is moving with a speed of 600 m/sec with an accuracy of 0.005%. Certainty with which the position of the electron can be located is:

(h = 6.6 $\times$ $10^{- 34}$ kg $m^{3}$ $s^{- 1}$ , mass of electron $m_{e}$ = 9.1 $\times$ $10^{- 31}$ kg)

Discussion

2827.	Which of the following is a limitation of Rutherford’s experiment?
Answer» Which of the following is a limitation of Rutherford’s experiment?

Discussion

2828.	electron affinity order of 3rd period
Answer» electron affinity order of 3rd period

Discussion

2829.	Fill in the blank : MgO + HCl →__________
Answer» Fill in the blank : $M g O + H C l \to$ __________

Discussion

2830.	which of the following solution has maximum boiling point at equimolar conc.1.[Co(H2O)6]Cl32.[Co(H2O)5 Cl]Cl2.H2O.[Co(H2O)4 Cl2]Cl.2H2O.[Co(H2O)3 Cl3]3.H2O
Answer» which of the following solution has maximum boiling point at equimolar conc. 1.[Co(H2O)6]Cl3 2.[Co(H2O)5 Cl]Cl2.H2O .[Co(H2O)4 Cl2]Cl.2H2O .[Co(H2O)3 Cl3]3.H2O

Discussion

2831.	Explain the blue colour of sky n sea, tail of comet, and twinkling of stars with respect totyndell effect
Answer» Explain the blue colour of sky n sea, tail of comet, and twinkling of stars with respect totyndell effect

Discussion

2832.	What do we call those particles which have : (a) More electrons than the normal atoms ? (b) Less electrons than the normal atoms ?
Answer» What do we call those particles which have : (a) More electrons than the normal atoms ? (b) Less electrons than the normal atoms ?

Discussion

2833.	A mercury barometer in a physics laboratory shows a 732 mm vertical column of mercury. Calculate the atmospheric pressure in pascal. [Given density of mercury, ρ = 1.36 × 104 kg m–3, g = 9.8 m s–2]
Answer» A mercury barometer in a physics laboratory shows a 732 mm vertical column of mercury. Calculate the atmospheric pressure in pascal. [Given density of mercury, ρ = 1.36 × 104 kg m–3, g = 9.8 m s–2]

Discussion

2834.	If the charges of protons and neutrons is switched to negative and positive, will it affect the stability of atoms? justify
Answer» If the charges of protons and neutrons is switched to negative and positive, will it affect the stability of atoms? justify

Discussion

2835.	You can easily move your hand in air but you are not able to move your hand through a wooden table. It is because
Answer» You can easily move your hand in air but you are not able to move your hand through a wooden table. It is because

Discussion

2836.	How to see symmetricity of carbon compound, like in case of melting point we've to see symmetricity
Answer» How to see symmetricity of carbon compound, like in case of melting point we've to see symmetricity

Discussion

2837.	How tension is calculated in double pully block system?
Answer» How tension is calculated in double pully block system?

Discussion

2838.	explain the activity of chromatography
Answer» explain the activity of chromatography

Discussion

2839.	A teacher gave an impure sample of alum containing fine sand as impurity to a student. He asked him to recover pure alum from this sample. The correct procedure to be followed would be to :(1) dissolve the impure sample of alum in water, filter and evaporate the filtrate(2) dissolve the impure sample of alum in alcohol and filter(3) move a magnet over the impure sample of alum(4) dissolve the impure sample of alum in carbon disulphide, filter and evaporate the filtrate
Answer» A teacher gave an impure sample of alum containing fine sand as impurity to a student. He asked him to recover pure alum from this sample. The correct procedure to be followed would be to : (1) dissolve the impure sample of alum in water, filter and evaporate the filtrate (2) dissolve the impure sample of alum in alcohol and filter (3) move a magnet over the impure sample of alum (4) dissolve the impure sample of alum in carbon disulphide, filter and evaporate the filtrate

Discussion

2840.	In which case is number of molecules is water is maximum?1. 18 ml of water
Answer» In which case is number of molecules is water is maximum? 1. 18 ml of water

Discussion

2841.	Which is the correct statement about α-particle?
Answer» Which is the correct statement about $α$ -particle?

Discussion

2842.	Why flourine is most reactive towards halogenation of alkane followed by chlorine bromine and iodine ?
Answer» Why flourine is most reactive towards halogenation of alkane followed by chlorine bromine and iodine ?

Discussion

2843.	STATEMENT - 1: 20Ne and 22Ne are isotopes. STATEMENT - 2: Noble gases do not exist as isotopes as they are inert.
Answer» STATEMENT - 1: $^{20} N e$ and $^{22} N e$ are isotopes. STATEMENT - 2: Noble gases do not exist as isotopes as they are inert.

Discussion

2844.	What is the mass ratio of nitrogen to hydrogen in an NH3 molecule?
Answer» What is the mass ratio of nitrogen to hydrogen in an NH₃ molecule?

Discussion

2845.	Oxidation number of 1. N atom in HNO2 2. Cr in K3CrO8
Answer» Oxidation number of 1. N atom in HNO2 2. Cr in K3CrO8

Discussion

2846.	2.00 g of the hydroxide of a metal gave 1.31 g of its oxide. Calculate the equivalent weight of the metal.
Answer» 2.00 g of the hydroxide of a metal gave 1.31 g of its oxide. Calculate the equivalent weight of the metal.

Discussion

2847.	why noble elements do not combine with other elements to form compounds?
Answer» why noble elements do not combine with other elements to form compounds?

Discussion

2848.	Is kheer a solution, colloid or suspension?
Answer» Is kheer a solution, colloid or suspension?

Discussion

2849.	Homogenous is a type of mixed substance and how compound is homogenous if it is , then give me the explaination of hetrogenous and homogenous mixture?
Answer» Homogenous is a type of mixed substance and how compound is homogenous if it is , then give me the explaination of hetrogenous and homogenous mixture?

Discussion

2850.	5. What is the boiling point of one molal solution of sodium chloride ( kb = 0.52 K /molal ) ?
Answer» 5. What is the boiling point of one molal solution of sodium chloride ( kb = 0.52 K /molal ) ?

Discussion

Explore topic-wise InterviewSolutions in .

Question 23Find out the valency of the atoms represented by the figure (a) and (b).​​​​​​​

Is it necessary that the combination reaction has only one product?

27. The r.m.s speed of a molecule of enclosed gas is V. What will be tge rms speed if pressure is doubled keeping the temperature same?

In a biogas plant, methane gas (CH4) is produced as a fuel. Find the mass ratio of carbon to hydrogen in methane.

Which of the following represent the suitable conditions for the liquefaction of gases? (a) low temperature, low pressure (b) high temperature, low pressure (c) low temperature, high pressure (d) high temperature, high pressure

Question 1 On the basis of Thomson’s model of an atom, explain how the atom is neutral as a whole?

A collapsible balloon is inflated to a volume of 10 L at a pressure of 1 atm. When the balloon is immersed to the bottom of a lake, its volume reduces to 1.25 L. Assuming 1 atm pressure to be equivalent to 10 m column of water and no change in temperature, the depth of the lake will be

Which methods will you use to separate the following mixtures?a. water and sugarb. sand and waterc. sand and salt

2CO2 (g)+2H2(g) −−→ 2CO(g)+ 2H2O(g)In this reaction gets oxidised and gets reduced.

The elrctric field at 2R from the centre of uniform charge non conducting sphere of radius R is E. The electric field at a distance R/2 from the centre is

25.Derive the value of R in terms of calorie

What is the mass of sulphur that would react with 5 g of iron to form ferrous sulphide (FeS)?2.8

Is sponge compressible

Three oxides of lead contain 92.83% ,90.65% and 86.10% lead. Prove that the law of multiple proportions is verified from these data.

a binary solid (A+B-)has fcc structure with B- ions constituting the lattice and A+ ions occupying 25% tetrahedral holes.the formula of solid is?

50. What is the n factor to be used in faraday s equation for electrolysis of water. It is given as 4 but I think it should be 2

The velocity of a particle at any time t is given by v=bt+a/t where a and b are constant. The dimension of a/b is

a stationary nucleus of mass m emits gamma radiation of energy E. if c is speed of light in vacuum,then recoil energy of nucleus will be?

What is atomicity? Explain with example.

Two beams of protons moving with velocity v1 and v2 are allowed to enter parallel to each other in a field free region. the ratio of magnetic force and electrostatic force exerted between the two beams is given by

Question 6 Summarise the rules for writing of distribution of electrons in various shells for the first eighteen elements.

Match the following with their units.

sodium generally does not show oxidation of +2. because of its:1. high first ionization potential2. high second ionization potential3. large ionic radius4. high electronegativity

helium atom is two times heavier than hydrogen molecule.At 25^° C,the kinetic energy of He atom i

Why is ice at 273k is more effective in cooling than water at same temperature?

In an atom, an electron is moving with a speed of 600 m/sec with an accuracy of 0.005%. Certainty with which the position of the electron can be located is:(h = 6.6 × 10−34 kg m3 s−1, mass of electron me = 9.1 × 10−31 kg)

Which of the following is a limitation of Rutherford’s experiment?

electron affinity order of 3rd period

Fill in the blank : MgO + HCl →__________

which of the following solution has maximum boiling point at equimolar conc.1.[Co(H2O)6]Cl32.[Co(H2O)5 Cl]Cl2.H2O.[Co(H2O)4 Cl2]Cl.2H2O.[Co(H2O)3 Cl3]3.H2O

Explain the blue colour of sky n sea, tail of comet, and twinkling of stars with respect totyndell effect

What do we call those particles which have : (a) More electrons than the normal atoms ? (b) Less electrons than the normal atoms ?

A mercury barometer in a physics laboratory shows a 732 mm vertical column of mercury. Calculate the atmospheric pressure in pascal. [Given density of mercury, ρ = 1.36 × 104 kg m–3, g = 9.8 m s–2]

If the charges of protons and neutrons is switched to negative and positive, will it affect the stability of atoms? justify

You can easily move your hand in air but you are not able to move your hand through a wooden table. It is because

How to see symmetricity of carbon compound, like in case of melting point we've to see symmetricity

How tension is calculated in double pully block system?

explain the activity of chromatography

In which case is number of molecules is water is maximum?1. 18 ml of water

Which is the correct statement about α-particle?

Why flourine is most reactive towards halogenation of alkane followed by chlorine bromine and iodine ?

STATEMENT - 1: 20Ne and 22Ne are isotopes. STATEMENT - 2: Noble gases do not exist as isotopes as they are inert.

What is the mass ratio of nitrogen to hydrogen in an NH3 molecule?

Oxidation number of 1. N atom in HNO2 2. Cr in K3CrO8

2.00 g of the hydroxide of a metal gave 1.31 g of its oxide. Calculate the equivalent weight of the metal.

why noble elements do not combine with other elements to form compounds?

Is kheer a solution, colloid or suspension?

Homogenous is a type of mixed substance and how compound is homogenous if it is , then give me the explaination of hetrogenous and homogenous mixture?

5. What is the boiling point of one molal solution of sodium chloride ( kb = 0.52 K /molal ) ?

Question 23Find out the valency of the atoms represented by the figure (a) and (b).