15280 + Interview Questions in Chemistry Page 116 InterviewSolution

5751.	Which of the following elements does not lose an electron easily?
Answer» Which of the following elements does not lose an electron easily?

Discussion

5752.	Which of the following hydrocarbons can undergo addition reactions: C2H6,C3H8,C3H6,C2H2 and CH4?
Answer» Which of the following hydrocarbons can undergo addition reactions: $C_{2} H_{6}, C_{3} H_{8}, C_{3} H_{6}, C_{2} H_{2}$ and ${CH}_{4}$ ?

Discussion

5753.	Which of the following is the term used for the fusible product formed when flux reacts with gangue during the extraction of metals?
Answer» Which of the following is the term used for the fusible product formed when flux reacts with gangue during the extraction of metals?

Discussion

5754.	A container with two gases He and Ar is 35% by volume of He-calculate Partial pressure of He and Ar, if total pressure inside the container is 14 atm:
Answer» A container with two gases He and Ar is 35% by volume of He-calculate Partial pressure of He and Ar, if total pressure inside the container is 14 atm:

Discussion

5755.	(a) What is meant by "water of crystallisation" in a substance? Explain with an example. (b) How would you show that blue copper sulphate crystals contain water of crystallisation? (c) Explain how anhydrous copper sulphate can be used to detect the presence of moisture (water) in a liquid.
Answer» (a) What is meant by "water of crystallisation" in a substance? Explain with an example. (b) How would you show that blue copper sulphate crystals contain water of crystallisation? (c) Explain how anhydrous copper sulphate can be used to detect the presence of moisture (water) in a liquid.

5755.

(a) What is meant by "water of crystallisation" in a substance? Explain with an example. (b) How would you show that blue copper sulphate crystals contain water of crystallisation? (c) Explain how anhydrous copper sulphate can be used to detect the presence of moisture (water) in a liquid.

Answer»

(a) What is meant by "water of crystallisation" in a substance? Explain with an example.

(b) How would you show that blue copper sulphate crystals contain water of crystallisation?

(c) Explain how anhydrous copper sulphate can be used to detect the presence of moisture (water) in a liquid.

Discussion

5756.	Which of the following solvent will not dissociate HCl into free ions ?
Answer» Which of the following solvent will not dissociate HCl into free ions ?

Discussion

5757.	The ratio of equivalent conductance to specific conductance of a 0.04 N KCl solution at a particular temperature is:
Answer» The ratio of equivalent conductance to specific conductance of a $0.04 N K C l$ solution at a particular temperature is:

Discussion

5758.	Benzylamine and aniline can be distinguished byWhich is correct option- Hno2 acid or Br2 water?
Answer» Benzylamine and aniline can be distinguished by Which is correct option- Hno2 acid or Br2 water?

Discussion

5759.	An element M burns in oxygen to form an ionic compound MO. Write the formula of the compounds formed if this element is made to combine with chlorine and sulphur separately.
Answer» An element M burns in oxygen to form an ionic compound MO. Write the formula of the compounds formed if this element is made to combine with chlorine and sulphur separately.

Discussion

5760.	Most ionic compounds have _____.
Answer» Most ionic compounds have _____.

Discussion

5761.	The compound(s) belonging to the alcohol family is/are
Answer» The compound(s) belonging to the alcohol family is/are

Discussion

5762.	(4) MnOgThe emf of the cell MIM (0.02 M)(1 M)H.(g)(1atm), Pt at 25^° C is 0.81 V Then, thevalency of the metal is, if the standard oxidationpotential of the metal is 0.76 V(1) n = 2(2) n = 1(3) n = 3(4) n= 4
Answer» (4) MnOg The emf of the cell MIM (0.02 M)(1 M) H.(g)(1atm), Pt at 25^° C is 0.81 V Then, the valency of the metal is, if the standard oxidation potential of the metal is 0.76 V (1) n = 2 (2) n = 1 (3) n = 3 (4) n= 4

Discussion

5763.	When a metal is put in water it starts floating and some gas is evolved from it without any fire. A burning candle is put off with a pop sound when a candle is exposed to this gas. The metal can be ____ .
Answer» When a metal is put in water it starts floating and some gas is evolved from it without any fire. A burning candle is put off with a pop sound when a candle is exposed to this gas. The metal can be ____ .

Discussion

5764.	Which of the following statements relating bond order and bond enthalpy are correct?
Answer» Which of the following statements relating bond order and bond enthalpy are correct?

Discussion

5765.	An element 'Z' has the electronic configuration 2, 8. Name the element 'Z' and determine its atomic number.
Answer» An element 'Z' has the electronic configuration 2, 8. Name the element 'Z' and determine its atomic number.

Discussion

5766.	By fusing one deuterium nucleus in a hydrogen like species its wave number for a spectral line increases 16/9 times , the atomic number of hydrogen like species is :- (A) 5 (B) 4 (C) 3 (D) 2
Answer» By fusing one deuterium nucleus in a hydrogen like species its wave number for a spectral line increases 16/9 times , the atomic number of hydrogen like species is :- (A) 5 (B) 4 (C) 3 (D) 2

Discussion

5767.	What is the atomic mass of the first 30 elements of periodic table
Answer» What is the atomic mass of the first 30 elements of periodic table

Discussion

5768.	Identify the gases that are perhaps chemically inert.
Answer» Identify the gases that are perhaps chemically inert.

Discussion

5769.	Draw all possile structural formulae of compounds from their molecular formula given below.a. C3H8 b. C4H10 c. C3H4
Answer» Draw all possile structural formulae of compounds from their molecular formula given below. a. C₃H₈ b. C₄H₁₀ c. C₃H₄

Discussion

5770.	50.The weight of one mole of a gas of density 0.1784 gram per litre at ntp is 1)0.1784g 2)1 g 3)4g 4)4 amu
Answer» 50.The weight of one mole of a gas of density 0.1784 gram per litre at ntp is 1)0.1784g 2)1 g 3)4g 4)4 amu

Discussion

5771.	Explain the statement ''different non metal are extracted by de-electronation by diffrerent processes while metals from electronation ''
Answer» Explain the statement ''different non metal are extracted by de-electronation by diffrerent processes while metals from electronation ''

Discussion

5772.	An ion M^+3 has electronic configuration [Ar] 3d10 4s2 element M belongs to
Answer» An ion M^+3 has electronic configuration [Ar] 3d10 4s2 element M belongs to

Discussion

5773.	what is rydberg formula and coolidge tube experiment?
Answer» what is rydberg formula and coolidge tube experiment?

Discussion

5774.	Explain displacement reaction with an example.
Answer» Explain displacement reaction with an example.

Discussion

5775.	What is the importance of Avagadro’s Number?
Answer» What is the importance of Avagadro’s Number?

Discussion

5776.	Manganese (IV) oxide, lead (IV) oxide and red lead (Pb3O4) react with concentrated hydrochloric acid to liberate chlorine.(a) Name the common property exhibited by these metal oxides.(b) Write the equation for the reaction of concentrated hydrochloric acid with Pb3O4.
Answer» Manganese (IV) oxide, lead (IV) oxide and red lead (Pb₃O₄) react with concentrated hydrochloric acid to liberate chlorine. (a) Name the common property exhibited by these metal oxides. (b) Write the equation for the reaction of concentrated hydrochloric acid with Pb₃O₄.

Discussion

5777.	(i) How will you distinguish between dilute H2SO4 and conc H2SO4?(ii) How will you distinguish between conc. HCl and conc. H2SO4?(iii) Give main differences between drying agent and dehydrating agent.
Answer» (i) How will you distinguish between dilute H₂SO₄ and conc H₂SO₄? (ii) How will you distinguish between conc. HCl and conc. H₂SO₄? (iii) Give main differences between drying agent and dehydrating agent.

Discussion

5778.	Question 2 (a) (a) Tabulate the differences in the characteristics of states of matter.
Answer» Question 2 (a) (a) Tabulate the differences in the characteristics of states of matter.

Discussion

5779.	Carbon dioxide is an example of:
Answer» Carbon dioxide is an example of:

Discussion

5780.	The elements or compounds of the metals which occur in nature in the earth crust are called ___.
Answer» The elements or compounds of the metals which occur in nature in the earth crust are called ___.

Discussion

5781.	Element X reacts with element Y to form a compound. Z. During the formation of compound Z, atoms of X lose one electron each whereas atoms of Y gain one electron each. Which of the following property is not shown by compound Z? (a) High melting point (b) Low melting point (c) Occurrence as solid (d) Conduction of electricity in molten state
Answer» Element X reacts with element Y to form a compound. Z. During the formation of compound Z, atoms of X lose one electron each whereas atoms of Y gain one electron each. Which of the following property is not shown by compound Z? (a) High melting point (b) Low melting point (c) Occurrence as solid (d) Conduction of electricity in molten state

5781.

Element X reacts with element Y to form a compound. Z. During the formation of compound Z, atoms of X lose one electron each whereas atoms of Y gain one electron each. Which of the following property is not shown by compound Z? (a) High melting point (b) Low melting point (c) Occurrence as solid (d) Conduction of electricity in molten state

Answer»

Element X reacts with element Y to form a compound. Z. During the formation of compound Z, atoms of X lose one electron each whereas atoms of Y gain one electron each. Which of the following property is not shown by compound Z?
(a) High melting point

(b) Low melting point

(c) Occurrence as solid

(d) Conduction of electricity in molten state

Discussion

5782.	Analyze the diagram given below and identify in which test tube the rate of reaction will be maximum.
Answer» Analyze the diagram given below and identify in which test tube the rate of reaction will be maximum.

5782.

Analyze the diagram given below and identify in which test tube the rate of reaction will be maximum.

Answer»

Analyze the diagram given below and identify in which test tube the rate of reaction will be maximum.

Discussion

5783.	Sarath decided to paint his house.He mixed moderate quantity of calcium oxide with water in a plastic container. He observed that the container was warm, got curious and started adding more and more of CaO in the water. What will he observe?
Answer» Sarath decided to paint his house.He mixed moderate quantity of calcium oxide with water in a plastic container. He observed that the container was warm, got curious and started adding more and more of CaO in the water. What will he observe?

Discussion

5784.	what is redox reaction on the basis of electronegative and electropositive species
Answer» what is redox reaction on the basis of electronegative and electropositive species

Discussion

5785.	State reason for the following: Curd should not be kept in copper or brass vessels. What is done to protect it?
Answer» State reason for the following: Curd should not be kept in copper or brass vessels. What is done to protect it?

5785.

State reason for the following: Curd should not be kept in copper or brass vessels. What is done to protect it?

Answer»

State reason for the following:

Curd should not be kept in copper or brass vessels. What is done to protect it?

Discussion

5786.	Why concentrated sulphuric acid is added to water and not the water to concentrated sulphuric acid
Answer» Why concentrated sulphuric acid is added to water and not the water to concentrated sulphuric acid

Discussion

5787.	what is equivalent mass of element,acid,base and what is the significance of equivalent mas
Answer» what is equivalent mass of element,acid,base and what is the significance of equivalent mas

Discussion

5788.	____ hydrocarbons undergo addition reaction.
Answer» ____ hydrocarbons undergo addition reaction.

Discussion

5789.	What is the molecular mass of substance each molecule of which contains four atoms of carbon and 10 atoms of hydrogen
Answer» What is the molecular mass of substance each molecule of which contains four atoms of carbon and 10 atoms of hydrogen

Discussion

5790.	The total number of products formed by thermal decomposition of Pb(NO3)2 are :3
Answer» The total number of products formed by thermal decomposition of $Pb {({NO}_{3})}_{2}$ are : 3

Discussion

5791.	Which of the following atoms will have the smallest size?
Answer» Which of the following atoms will have the smallest size?

Discussion

5792.	What is the difference in wavelengths of the 4th and 5th lines of balmer series in the spectrum of atomic hydrogen :-
Answer» What is the difference in wavelengths of the 4th and 5th lines of balmer series in the spectrum of atomic hydrogen :-

Discussion

5793.	Which of the following is not a basic flux?
Answer» Which of the following is not a basic flux?

Discussion

5794.	An ecosystem possesses
Answer» An ecosystem possesses

Discussion

5795.	Write down the changes that will be seen in each instance and explain the reason behind it."Magnesium oxide was added to dilute HCl and magnesium oxide was a added to dilute NaOH."
Answer» Write down the changes that will be seen in each instance and explain the reason behind it. "Magnesium oxide was added to dilute HCl and magnesium oxide was a added to dilute NaOH."

Discussion

5796.	Passage of ammonia gas through copper sulphate solution forms pale blue precipitate.What is the precipitate?
Answer» Passage of ammonia gas through copper sulphate solution forms pale blue precipitate.What is the precipitate?

Discussion

5797.	Which of the given elements can be displaced by copper from their aqueous solutions?
Answer» Which of the given elements can be displaced by copper from their aqueous solutions?

Discussion

5798.	What influence does an increase in reactant concentration have on the system which is in equilibrium?
Answer» What influence does an increase in reactant concentration have on the system which is in equilibrium?

Discussion

5799.	How many moles of Na+ ions are present in 318g sodium carbonate? (Molar mass of Na2CO3= 106g) 6.66
Answer» How many moles of Na+ ions are present in 318g sodium carbonate? (Molar mass of Na2CO3= 106g) 6.66

Discussion

5800.	Element A has atomic number 11. The formula of its ion will be :
Answer» Element A has atomic number 11. The formula of its ion will be :

Discussion

Explore topic-wise InterviewSolutions in .

Which of the following elements does not lose an electron easily?

Which of the following hydrocarbons can undergo addition reactions: C2H6,C3H8,C3H6,C2H2 and CH4?

Which of the following is the term used for the fusible product formed when flux reacts with gangue during the extraction of metals?

A container with two gases He and Ar is 35% by volume of He-calculate Partial pressure of He and Ar, if total pressure inside the container is 14 atm:

(a) What is meant by "water of crystallisation" in a substance? Explain with an example. (b) How would you show that blue copper sulphate crystals contain water of crystallisation? (c) Explain how anhydrous copper sulphate can be used to detect the presence of moisture (water) in a liquid.

Which of the following solvent will not dissociate HCl into free ions ?

The ratio of equivalent conductance to specific conductance of a 0.04 N KCl solution at a particular temperature is:

Benzylamine and aniline can be distinguished byWhich is correct option- Hno2 acid or Br2 water?

An element M burns in oxygen to form an ionic compound MO. Write the formula of the compounds formed if this element is made to combine with chlorine and sulphur separately.

Most ionic compounds have _____.

The compound(s) belonging to the alcohol family is/are

(4) MnOgThe emf of the cell MIM (0.02 M)(1 M)H.(g)(1atm), Pt at 25^° C is 0.81 V Then, thevalency of the metal is, if the standard oxidationpotential of the metal is 0.76 V(1) n = 2(2) n = 1(3) n = 3(4) n= 4

When a metal is put in water it starts floating and some gas is evolved from it without any fire. A burning candle is put off with a pop sound when a candle is exposed to this gas. The metal can be ____ .

Which of the following statements relating bond order and bond enthalpy are correct?

An element 'Z' has the electronic configuration 2, 8. Name the element 'Z' and determine its atomic number.

By fusing one deuterium nucleus in a hydrogen like species its wave number for a spectral line increases 16/9 times , the atomic number of hydrogen like species is :- (A) 5 (B) 4 (C) 3 (D) 2

What is the atomic mass of the first 30 elements of periodic table

Identify the gases that are perhaps chemically inert.

Draw all possile structural formulae of compounds from their molecular formula given below.a. C3H8 b. C4H10 c. C3H4

50.The weight of one mole of a gas of density 0.1784 gram per litre at ntp is 1)0.1784g 2)1 g 3)4g 4)4 amu

Explain the statement ''different non metal are extracted by de-electronation by diffrerent processes while metals from electronation ''

An ion M^+3 has electronic configuration [Ar] 3d10 4s2 element M belongs to

what is rydberg formula and coolidge tube experiment?

Explain displacement reaction with an example.

What is the importance of Avagadro’s Number?

Manganese (IV) oxide, lead (IV) oxide and red lead (Pb3O4) react with concentrated hydrochloric acid to liberate chlorine.(a) Name the common property exhibited by these metal oxides.(b) Write the equation for the reaction of concentrated hydrochloric acid with Pb3O4.

(i) How will you distinguish between dilute H2SO4 and conc H2SO4?(ii) How will you distinguish between conc. HCl and conc. H2SO4?(iii) Give main differences between drying agent and dehydrating agent.

Question 2 (a) (a) Tabulate the differences in the characteristics of states of matter.

Carbon dioxide is an example of:

The elements or compounds of the metals which occur in nature in the earth crust are called ___.

Analyze the diagram given below and identify in which test tube the rate of reaction will be maximum.

Sarath decided to paint his house.He mixed moderate quantity of calcium oxide with water in a plastic container. He observed that the container was warm, got curious and started adding more and more of CaO in the water. What will he observe?

what is redox reaction on the basis of electronegative and electropositive species

State reason for the following: Curd should not be kept in copper or brass vessels. What is done to protect it?

Why concentrated sulphuric acid is added to water and not the water to concentrated sulphuric acid

what is equivalent mass of element,acid,base and what is the significance of equivalent mas

____ hydrocarbons undergo addition reaction.

What is the molecular mass of substance each molecule of which contains four atoms of carbon and 10 atoms of hydrogen

The total number of products formed by thermal decomposition of Pb(NO3)2 are :3

Which of the following atoms will have the smallest size?

What is the difference in wavelengths of the 4th and 5th lines of balmer series in the spectrum of atomic hydrogen :-

Which of the following is not a basic flux?

An ecosystem possesses

Write down the changes that will be seen in each instance and explain the reason behind it."Magnesium oxide was added to dilute HCl and magnesium oxide was a added to dilute NaOH."

Passage of ammonia gas through copper sulphate solution forms pale blue precipitate.What is the precipitate?

Which of the given elements can be displaced by copper from their aqueous solutions?

What influence does an increase in reactant concentration have on the system which is in equilibrium?

How many moles of Na+ ions are present in 318g sodium carbonate? (Molar mass of Na2CO3= 106g) 6.66

Element A has atomic number 11. The formula of its ion will be :