10223 + Interview Questions in Chemistry Page 110 InterviewSolution

5451.	17Calculate the number of molecules and number of atoms present in 11.2 litre of oxygen at ST
Answer» 17Calculate the number of molecules and number of atoms present in 11.2 litre of oxygen at ST

Discussion

5452.	Condition of pure slipping without rolling and pure rolling without slipping
Answer» Condition of pure slipping without rolling and pure rolling without slipping

Discussion

5453.	53. Two elements X(atomic weight=75) and Y(atomic weight=16) combine to give a compound having 75.8% of X. The emperical formula of the compound is-
Answer» 53. Two elements X(atomic weight=75) and Y(atomic weight=16) combine to give a compound having 75.8% of X. The emperical formula of the compound is-

Discussion

5454.	Question 17Smoke and fog both are aerosols. In what way are they different?
Answer» Question 17 Smoke and fog both are aerosols. In what way are they different?

Discussion

5455.	α particle is gas or it is not?
Answer» α particle is gas or it is not?

Discussion

5456.	15. Which of the following does not evolve oxygen at anode when electrolysis is carried out A) Dilute sulphuric acid with platinum electrode B) Fused sodium hydroxide with platinum electrode C) Acidic water with platinum electrode D) Dilute sulphuric acid with copper electrode
Answer» 15. Which of the following does not evolve oxygen at anode when electrolysis is carried out A) Dilute sulphuric acid with platinum electrode B) Fused sodium hydroxide with platinum electrode C) Acidic water with platinum electrode D) Dilute sulphuric acid with copper electrode

Discussion

5457.	what are the factors affecting the boiling point?
Answer» what are the factors affecting the boiling point?

Discussion

5458.	Hydrogen sulphide contains 94.11% sulphur, sulphur dioxide contains 50% oxygen and water contains 11.11% hydrogen. Show that these figures are in agreement with law of reciprocal proportions.
Answer» Hydrogen sulphide contains 94.11% sulphur, sulphur dioxide contains 50% oxygen and water contains 11.11% hydrogen. Show that these figures are in agreement with law of reciprocal proportions.

Discussion

5459.	What is the difference between atomic mass and relative atomic mass
Answer» What is the difference between atomic mass and relative atomic mass

Discussion

5460.	According to Newlands’ Law of Octaves, identify the set of elements that possess similar properties.
Answer» According to Newlands’ Law of Octaves, identify the set of elements that possess similar properties.

Discussion

5461.	What is Alkali metal ,Alkalines Alkali Bases?Difference B/w Alkali Metals and Alkali Bases?Draw a periodic Table?
Answer» What is Alkali metal ,Alkalines Alkali Bases?Difference B/w Alkali Metals and Alkali Bases?Draw a periodic Table?

Discussion

5462.	Which one of the following setups is the most appropriate for the evolution of hydrogen gas and its identification?(1) (a)(2) (b)(3) (c)(4) (d)
Answer» Which one of the following setups is the most appropriate for the evolution of hydrogen gas and its identification? (1) (a) (2) (b) (3) (c) (4) (d)

Discussion

5463.	What should be the number of atoms of Tin in the balanced form of the equation below? As2O3 + SnCl2 + HCl → SnCl4 + As + H2O
Answer» What should be the number of atoms of Tin in the balanced form of the equation below? $A s_{2} O_{3} + S n C l_{2} + H C l \to S n C l_{4} + A s + H_{2} O$

5463.

What should be the number of atoms of Tin in the balanced form of the equation below? As2O3 + SnCl2 + HCl → SnCl4 + As + H2O

Answer»

What should be the number of atoms of Tin in the balanced form of the equation below?

$A s_{2} O_{3} + S n C l_{2} + H C l \to S n C l_{4} + A s + H_{2} O$

Discussion

5464.	Name 10 physical objects which are not matter.
Answer» Name 10 physical objects which are not matter.

Discussion

5465.	Which of these reactions is not possible?
Answer» Which of these reactions is not possible?

Discussion

5466.	The mass ratio of carbon to hydrogen in methane is 3:1. How much amount of hydrogen is required to react with 36 g of carbon to form methane?
Answer» The mass ratio of carbon to hydrogen in methane is 3:1. How much amount of hydrogen is required to react with 36 g of carbon to form methane?

Discussion

5467.	Select the correct option(s) for the Ostwald process.
Answer» Select the correct option(s) for the Ostwald process.

Discussion

5468.	Which of the following contains maximum number of atoms?Options: 1) 32 g S82) 32 g S23) 32 g S64) All will contain same number of atoms
Answer» Which of the following contains maximum number of atoms? Options: 1) 32 g S8 2) 32 g S2 3) 32 g S6 4) All will contain same number of atoms

Discussion

5469.	is castner process and castner-kellner process same ?
Answer» is castner process and castner-kellner process same ?

Discussion

5470.	Archimedes' principle applies to :
Answer» Archimedes' principle applies to :

Discussion

5471.	Who discovered neutron? What is the contribution of neutron in the mass of an atom?
Answer» Who discovered neutron? What is the contribution of neutron in the mass of an atom?

Discussion

5472.	What is it made from? Why?(a) A sickle to cut sugarcane.(b) The sheets used for roofing.(c) A screwdriver(d) A pair of tongs.(e) Electric cables.(f) Ornaments.(g) Pots and pans.
Answer» What is it made from? Why? (a) A sickle to cut sugarcane. (b) The sheets used for roofing. (c) A screwdriver (d) A pair of tongs. (e) Electric cables. (f) Ornaments. (g) Pots and pans.

Discussion

5473.	Water softening by Clark’s process uses
Answer» Water softening by Clark’s process uses

Discussion

5474.	why lithium form monoxide only not else oxides. also give reason for other members of group 1
Answer» why lithium form monoxide only not else oxides. also give reason for other members of group 1

Discussion

5475.	What exactly is terminal velocity ,did it apply just for fluids?
Answer» What exactly is terminal velocity ,did it apply just for fluids?

Discussion

5476.	At 90∘C, the concentration of hydronium ion in pure water has 10−6 molL−1. what is the value of Kw at 90∘C
Answer» At $90^{\circ} C$ , the concentration of hydronium ion in pure water has $10^{- 6} {molL}^{- 1}$ . what is the value of $K_{w}$ at $90^{\circ} C$

Discussion

5477.	If one electron has been removed from an atom, it becomes increasingly difficult to remove the second and subsequent electrons from the resulting positively charged ions on account of electrostatic attraction between the nucleus and the remaining electrons. If the ionization values of elements are plotted against the atomic number, then peaks are occupied by:
Answer» If one electron has been removed from an atom, it becomes increasingly difficult to remove the second and subsequent electrons from the resulting positively charged ions on account of electrostatic attraction between the nucleus and the remaining electrons. If the ionization values of elements are plotted against the atomic number, then peaks are occupied by:

Discussion

5478.	Which of the following solutions show phenomenon of scattering of light (Tyndall effect)?
Answer» Which of the following solutions show phenomenon of scattering of light (Tyndall effect)?

5478.

Which of the following solutions show phenomenon of scattering of light (Tyndall effect)?

Answer»

Which of the following solutions show phenomenon of scattering of light (Tyndall effect)?

Discussion

5479.	21.5 g of sodium chloride dissolves in 60 g of water at 25° C. Calculate the solubility of sodium chloride in water at that temperature.
Answer» 21.5 g of sodium chloride dissolves in 60 g of water at 25° C. Calculate the solubility of sodium chloride in water at that temperature.

Discussion

5480.	Mention the main ideas of the Bohr's model of an atom.
Answer» Mention the main ideas of the Bohr's model of an atom.

Discussion

5481.	What is the meaning of reagents?
Answer» What is the meaning of reagents?

Discussion

5482.	(a) What property do all elements in the same column of the Periodic Table as boron have in common?(b) What property do all elements in the same column of the Periodic Table as fluorine have in common?
Answer» (a) What property do all elements in the same column of the Periodic Table as boron have in common? (b) What property do all elements in the same column of the Periodic Table as fluorine have in common?

5482.

(a) What property do all elements in the same column of the Periodic Table as boron have in common?(b) What property do all elements in the same column of the Periodic Table as fluorine have in common?

Answer»

(a) What property do all elements in the same column of the Periodic Table as boron have in common?

(b) What property do all elements in the same column of the Periodic Table as fluorine have in common?

Discussion

5483.	If both K and L shells are filled, the total number of electrons contained in them will be:
Answer» If both K and L shells are filled, the total number of electrons contained in them will be:

Discussion

5484.	2.8 g of calcium oxide prepared by heating limestone produced 0.8 g of oxygen. Calculate the mass percentage of calcium.
Answer» 2.8 g of calcium oxide prepared by heating limestone produced 0.8 g of oxygen. Calculate the mass percentage of calcium.

Discussion

5485.	Which of the following curve assures that the metal obtained by carbon reduction is in vapour state
Answer» Which of the following curve assures that the metal obtained by carbon reduction is in vapour state

Discussion

5486.	State 5 differences between Slaked lime and lime water.(NOTE:In TABULAR form)
Answer» State 5 differences between Slaked lime and lime water.(NOTE:In TABULAR form)

Discussion

5487.	What are motif or basis in crystal lattice?
Answer» What are motif or basis in crystal lattice?

Discussion

5488.	Question 1 (b)Convert the following temperatures to the Celsius scale.(b) 470 K.
Answer» Question 1 (b) Convert the following temperatures to the Celsius scale. (b) 470 K.

Discussion

5489.	What is the significant figure of numbes like 3 , 414 which do not have any decimal points?
Answer» What is the significant figure of numbes like 3 , 414 which do not have any decimal points?

Discussion

5490.	26. In a cubic unit cell , A atoms are atoms are present on alternate corners,B atoms are present on alternate face centers and C atoms are present on alternative edge centers and body centers of the cube . The simplest formula of the compound is:- (1)ABCD (2)A2BC4 (3)AB2C4 (4)none
Answer» 26. In a cubic unit cell , A atoms are atoms are present on alternate corners,B atoms are present on alternate face centers and C atoms are present on alternative edge centers and body centers of the cube . The simplest formula of the compound is:- (1)ABCD (2)A2BC4 (3)AB2C4 (4)none

Discussion

5491.	The gas laws are applicable only when gases are assumed to be ideal.If we consider the gases to be real ,then why we cannot use the laws?Explai
Answer» The gas laws are applicable only when gases are assumed to be ideal.If we consider the gases to be real ,then why we cannot use the laws?Explai

Discussion

5492.	the bond order of O2 and O2+ are?
Answer» the bond order of O2 and O2+ are?

Discussion

5493.	Statement 1: Plastic rod becomes negatively charged when rubbed with a cloth.Statement 1: Glass rod becomes positively charged when rubbed with a cloth.Explain both the statements.
Answer» Statement 1: Plastic rod becomes negatively charged when rubbed with a cloth. Statement 1: Glass rod becomes positively charged when rubbed with a cloth. Explain both the statements.

Discussion

5494.	Out of 5 vowels given here, number of vowels which have horizontal line of symmetry is , number of vowels which have vertical line of symmetry is .
Answer» Out of 5 vowels given here, number of vowels which have horizontal line of symmetry is , number of vowels which have vertical line of symmetry is .

Discussion

5495.	why is law of conseravation of mass not applicable for nuclear reaction
Answer» why is law of conseravation of mass not applicable for nuclear reaction

Discussion

5496.	00"Two protons A and B move parallel to the x-axis inopposite directions with equal speeds v. At theinstant shown, the ratio of magnetic force andelectric force acting on the proton A is (c = speedof light in vacuum)1.
Answer» 00"Two protons A and B move parallel to the x-axis inopposite directions with equal speeds v. At theinstant shown, the ratio of magnetic force andelectric force acting on the proton A is (c = speedof light in vacuum)1.

Discussion

5497.	LEWIS ACID STRENGTH FOR: P BLOCK ELEMENTSXF3 XCl3 XBr3 XI3
Answer» LEWIS ACID STRENGTH FOR: P BLOCK ELEMENTS XF3 XCl3 XBr3 XI3

Discussion

5498.	What are the differences between combustion and burning.
Answer» What are the differences between combustion and burning.

Discussion

5499.	Which of these is an amorphous solid? (A)glass (B)rubber (C)plastic (D)all
Answer» Which of these is an amorphous solid? (A)glass (B)rubber (C)plastic (D)all

Discussion

5500.	An ionic compound AB having structure similar to rock salt .All the ions are removed along the planes of two body diagonal then the formula of the compound will be
Answer» An ionic compound AB having structure similar to rock salt .All the ions are removed along the planes of two body diagonal then the formula of the compound will be

Discussion

Explore topic-wise InterviewSolutions in .

17Calculate the number of molecules and number of atoms present in 11.2 litre of oxygen at ST

Condition of pure slipping without rolling and pure rolling without slipping

53. Two elements X(atomic weight=75) and Y(atomic weight=16) combine to give a compound having 75.8% of X. The emperical formula of the compound is-

Question 17Smoke and fog both are aerosols. In what way are they different?

α particle is gas or it is not?

15. Which of the following does not evolve oxygen at anode when electrolysis is carried out A) Dilute sulphuric acid with platinum electrode B) Fused sodium hydroxide with platinum electrode C) Acidic water with platinum electrode D) Dilute sulphuric acid with copper electrode

what are the factors affecting the boiling point?

Hydrogen sulphide contains 94.11% sulphur, sulphur dioxide contains 50% oxygen and water contains 11.11% hydrogen. Show that these figures are in agreement with law of reciprocal proportions.

What is the difference between atomic mass and relative atomic mass

According to Newlands’ Law of Octaves, identify the set of elements that possess similar properties.

What is Alkali metal ,Alkalines Alkali Bases?Difference B/w Alkali Metals and Alkali Bases?Draw a periodic Table?

Which one of the following setups is the most appropriate for the evolution of hydrogen gas and its identification?(1) (a)(2) (b)(3) (c)(4) (d)

What should be the number of atoms of Tin in the balanced form of the equation below? As2O3 + SnCl2 + HCl → SnCl4 + As + H2O

Name 10 physical objects which are not matter.

Which of these reactions is not possible?

The mass ratio of carbon to hydrogen in methane is 3:1. How much amount of hydrogen is required to react with 36 g of carbon to form methane?

Select the correct option(s) for the Ostwald process.

Which of the following contains maximum number of atoms?Options: 1) 32 g S82) 32 g S23) 32 g S64) All will contain same number of atoms

is castner process and castner-kellner process same ?

Archimedes' principle applies to :

Who discovered neutron? What is the contribution of neutron in the mass of an atom?

What is it made from? Why?(a) A sickle to cut sugarcane.(b) The sheets used for roofing.(c) A screwdriver(d) A pair of tongs.(e) Electric cables.(f) Ornaments.(g) Pots and pans.

Water softening by Clark’s process uses

why lithium form monoxide only not else oxides. also give reason for other members of group 1

What exactly is terminal velocity ,did it apply just for fluids?

At 90∘C, the concentration of hydronium ion in pure water has 10−6 molL−1. what is the value of Kw at 90∘C

Which of the following solutions show phenomenon of scattering of light (Tyndall effect)?

21.5 g of sodium chloride dissolves in 60 g of water at 25° C. Calculate the solubility of sodium chloride in water at that temperature.

Mention the main ideas of the Bohr's model of an atom.

What is the meaning of reagents?

(a) What property do all elements in the same column of the Periodic Table as boron have in common?(b) What property do all elements in the same column of the Periodic Table as fluorine have in common?

If both K and L shells are filled, the total number of electrons contained in them will be:

2.8 g of calcium oxide prepared by heating limestone produced 0.8 g of oxygen. Calculate the mass percentage of calcium.

Which of the following curve assures that the metal obtained by carbon reduction is in vapour state

State 5 differences between Slaked lime and lime water.(NOTE:In TABULAR form)

What are motif or basis in crystal lattice?

Question 1 (b)Convert the following temperatures to the Celsius scale.(b) 470 K.

What is the significant figure of numbes like 3 , 414 which do not have any decimal points?

26. In a cubic unit cell , A atoms are atoms are present on alternate corners,B atoms are present on alternate face centers and C atoms are present on alternative edge centers and body centers of the cube . The simplest formula of the compound is:- (1)ABCD (2)A2BC4 (3)AB2C4 (4)none

The gas laws are applicable only when gases are assumed to be ideal.If we consider the gases to be real ,then why we cannot use the laws?Explai

the bond order of O2 and O2+ are?

Statement 1: Plastic rod becomes negatively charged when rubbed with a cloth.Statement 1: Glass rod becomes positively charged when rubbed with a cloth.Explain both the statements.

Out of 5 vowels given here, number of vowels which have horizontal line of symmetry is , number of vowels which have vertical line of symmetry is .

why is law of conseravation of mass not applicable for nuclear reaction

00"Two protons A and B move parallel to the x-axis inopposite directions with equal speeds v. At theinstant shown, the ratio of magnetic force andelectric force acting on the proton A is (c = speedof light in vacuum)1.

LEWIS ACID STRENGTH FOR: P BLOCK ELEMENTSXF3 XCl3 XBr3 XI3

What are the differences between combustion and burning.

Which of these is an amorphous solid? (A)glass (B)rubber (C)plastic (D)all

An ionic compound AB having structure similar to rock salt .All the ions are removed along the planes of two body diagonal then the formula of the compound will be