15280 + Interview Questions in Chemistry Page 226 InterviewSolution

11251.	What is a homologous series and what are its characteristics? [5 MARKS]
Answer» What is a homologous series and what are its characteristics? [5 MARKS]

Discussion

11252.	Formation of Nitric Oxide is ___ reaction.
Answer» Formation of Nitric Oxide is ___ reaction.

Discussion

11253.	Which of the below metal nitrate decomposes to give free metal after heating it?
Answer» Which of the below metal nitrate decomposes to give free metal after heating it?

Discussion

11254.	What does a catalyst do in a reaction?
Answer» What does a catalyst do in a reaction?

Discussion

11255.	SnCl2+A→SnS+2HCl SnS+(NH4)2S+S→B Here A and B is:
Answer» $S n C l_{2} + A \to S n S + 2 H C l$ $S n S + (N H_{4})_{2} S + S \to B$ Here A and B is:

11255.

SnCl2+A→SnS+2HCl SnS+(NH4)2S+S→B Here A and B is:

Answer»

$S n C l_{2} + A \to S n S + 2 H C l$

$S n S + (N H_{4})_{2} S + S \to B$

Here A and B is:

Discussion

11256.	On 1st January, X sold goods worth Rs. 1,00,000 to Y and drew a bill on Y at 3 months for the amount. Y accepted the bill and returned it to X who endorsed the bill a month after the acceptance, in favour of a creditor Z in full settlement of his debt for Rs. 1,02,000. The bill is duly honoured at maturity. Pass the necessary journal entries in the books of X, Y and Z.
Answer» On 1st January, X sold goods worth Rs. 1,00,000 to Y and drew a bill on Y at 3 months for the amount. Y accepted the bill and returned it to X who endorsed the bill a month after the acceptance, in favour of a creditor Z in full settlement of his debt for Rs. 1,02,000. The bill is duly honoured at maturity. Pass the necessary journal entries in the books of X, Y and Z.

Discussion

11257.	Identify the Arrhenius acids among the following: 1. NaCl 2. HCl 3. Cu(OH)2 4. NaOH 5. H2SO4 6. HNO3 7. KOH
Answer» Identify the Arrhenius acids among the following: 1. NaCl 2. HCl 3. $C u (O H)_{2}$ 4. NaOH 5. $H_{2} S O_{4}$ 6. $H N O_{3}$ 7. KOH

11257.

Identify the Arrhenius acids among the following: 1. NaCl 2. HCl 3. Cu(OH)2 4. NaOH 5. H2SO4 6. HNO3 7. KOH

Answer»

Identify the Arrhenius acids among the following:

1. NaCl 2. HCl 3. $C u (O H)_{2}$ 4. NaOH

5. $H_{2} S O_{4}$ 6. $H N O_{3}$ 7. KOH

Discussion

11258.	In electrolysis of water, why is the volume of gas collected over one electrode double that of the other electrode?
Answer» In electrolysis of water, why is the volume of gas collected over one electrode double that of the other electrode?

Discussion

11259.	Question 56 Explain the given reaction with examples: (a) Hydrogenation (b) Oxidation (c) Substitution (d) Saponification (e) Combustion
Answer» Question 56 Explain the given reaction with examples: (a) Hydrogenation (b) Oxidation (c) Substitution (d) Saponification (e) Combustion

Discussion

11260.	explain anodising technique ?
Answer» explain anodising technique ?

Discussion

11261.	Which of the following is/are the requirements for the formation of a metallic bond? (i) Formation of negative ions. (ii) Formation of positive ions. (iii) Freely moving electrons. (iv) Sharing of electrons between two atoms.
Answer» Which of the following is/are the requirements for the formation of a metallic bond? (i) Formation of negative ions. (ii) Formation of positive ions. (iii) Freely moving electrons. (iv) Sharing of electrons between two atoms.

Discussion

11262.	Name two antioxidants which are usually added to fat and oil containing foods to prevent rancidity.
Answer» Name two antioxidants which are usually added to fat and oil containing foods to prevent rancidity.

Discussion

11263.	How do you indicate the following effects in a chemical equation? A) A solution made in water B) Exothermic reaction C) Endothermic reaction
Answer» How do you indicate the following effects in a chemical equation? A) A solution made in water B) Exothermic reaction C) Endothermic reaction

11263.

How do you indicate the following effects in a chemical equation? A) A solution made in water B) Exothermic reaction C) Endothermic reaction

Answer»

How do you indicate the following effects in a chemical equation?

A) A solution made in water

B) Exothermic reaction

C) Endothermic reaction

Discussion

11264.	Complete the following reaction: K2CO3 + HCl →___________
Answer» Complete the following reaction: $K_{2} C O_{3} + H C l \to$ ___________

Discussion

11265.	What happens when dilute HCl is added to iron fillings? Name the type of reaction involved.
Answer» What happens when dilute HCl is added to iron fillings? Name the type of reaction involved.

Discussion

11266.	(a)What is meant by Functional group? (b)What happens when carbon burns in air? Write the equation.
Answer» (a)What is meant by Functional group? (b)What happens when carbon burns in air? Write the equation.

11266.

(a)What is meant by Functional group? (b)What happens when carbon burns in air? Write the equation.

Answer»

(a)What is meant by Functional group?

(b)What happens when carbon burns in air? Write the equation.

Discussion

11267.	What happens to (a) the H+ ions, and (b) temperature of the solution, when an acid is neutralised ?
Answer» What happens to (a) the $H^{+}$ ions, and (b) temperature of the solution, when an acid is neutralised ?

Discussion

11268.	(a) An element X has mass number 40 and contains 21 neutrons in its atom. To which group of the periodic table does it belong? (b) The element X forms a compound X2Y. Suggest an element that Y might be and give reasons for your choice.
Answer» (a) An element X has mass number 40 and contains 21 neutrons in its atom. To which group of the periodic table does it belong? (b) The element X forms a compound $X_{2}$ Y. Suggest an element that Y might be and give reasons for your choice.

11268.

(a) An element X has mass number 40 and contains 21 neutrons in its atom. To which group of the periodic table does it belong? (b) The element X forms a compound X2Y. Suggest an element that Y might be and give reasons for your choice.

Answer»

(a) An element X has mass number 40 and contains 21 neutrons in its atom. To which group of the periodic table does it belong?

(b) The element X forms a compound $X_{2}$ Y. Suggest an element that Y might be and give reasons for your choice.

Discussion

11269.	A student puts his signature with a graphite pencil. If the mass of carbon in the signature is 1012 g, calculate the number of carbon atoms in the signature.
Answer» A student puts his signature with a graphite pencil. If the mass of carbon in the signature is $10^{12}$ g, calculate the number of carbon atoms in the signature.

Discussion

11270.	Condensed formula of pentene is
Answer» Condensed formula of pentene is

Discussion

11271.	What are the property of salt?
Answer» What are the property of salt?

Discussion

11272.	What are electrolytes?
Answer» What are electrolytes?

Discussion

11273.	Can you please give me a little explanation about the super position states..?... and how they can possibly exist....?
Answer» Can you please give me a little explanation about the super position states..?... and how they can possibly exist....?

Discussion

11274.	Which of the following describes the relationship of Mutualism?
Answer» Which of the following describes the relationship of Mutualism?

Discussion

11275.	Which of the following reaction is reversible in nature?
Answer» Which of the following reaction is reversible in nature?

Discussion

11276.	how to balance chemical reaction of sodium+ water---->sodium hydroxide+hydrogen please explain in brief
Answer» how to balance chemical reaction of sodium+ water---->sodium hydroxide+hydrogen please explain in brief

11276.

how to balance chemical reaction of sodium+ water---->sodium hydroxide+hydrogen please explain in brief

Answer»

how to balance chemical reaction of sodium+ water---->sodium hydroxide+hydrogen

please explain in brief

Discussion

11277.	Which of the following metal can be cut with a knife?
Answer» Which of the following metal can be cut with a knife?

Discussion

11278.	Complete and balance the following equations. State the conditions wherever necessary. a) b) C2H4+CL2→…… c) C2H4+HCl→…… d) CaC2+H2O→…… e) C2H2+Br2→…… f) C2H5OH[O]−−−−−→K2Cr2O7…… [5 MARKS]
Answer» Complete and balance the following equations. State the conditions wherever necessary. a) b) $C_{2} H_{4} + C L_{2} \to \dots \dots$ c) $C_{2} H_{4} + H C l \to \dots \dots$ d) $C a C_{2} + H_{2} O \to \dots \dots$ e) $C_{2} H_{2} + B r_{2} \to \dots \dots$ f) $C_{2} H_{5} O H [O] - ---- \to K_{2} C r_{2} O_{7} \dots \dots$ [5 MARKS]

Discussion

11279.	Substance X conducts electricity when in the solid state. X reacts with Hydrochloric acid. Which substance could X be?
Answer» Substance X conducts electricity when in the solid state. X reacts with Hydrochloric acid. Which substance could X be?

Discussion

11280.	Each of the three elements may or may not have any relationship. These elements may fit into one of these Venn diagrams (a), (b), (c) and (d). Indicate the correct Venn diagram showing the relation between these elements.Elements: week, day, year.
Answer» Each of the three elements may or may not have any relationship. These elements may fit into one of these Venn diagrams (a), (b), (c) and (d). Indicate the correct Venn diagram showing the relation between these elements.Elements: week, day, year.

Discussion

11281.	The following diagram shows a part of the periodic table containing first three periods in which five elements have been represented by the letters a, b, c, d and e (which are not their chemical symbols) : (i) Select the letter which represents an alkali metal. (ii) Select the letter which represents a noble gas. (iii) Select the letter which represents a halogen. (iv) What type of bond is formed between a and e? (v) What type of bond is formed between d and e?
Answer» The following diagram shows a part of the periodic table containing first three periods in which five elements have been represented by the letters a, b, c, d and e (which are not their chemical symbols) : (i) Select the letter which represents an alkali metal. (ii) Select the letter which represents a noble gas. (iii) Select the letter which represents a halogen. (iv) What type of bond is formed between a and e? (v) What type of bond is formed between d and e?

11281.

The following diagram shows a part of the periodic table containing first three periods in which five elements have been represented by the letters a, b, c, d and e (which are not their chemical symbols) : (i) Select the letter which represents an alkali metal. (ii) Select the letter which represents a noble gas. (iii) Select the letter which represents a halogen. (iv) What type of bond is formed between a and e? (v) What type of bond is formed between d and e?

Answer»

The following diagram shows a part of the periodic table containing first three periods in which five elements have been represented by the letters a, b, c, d and e (which are not their chemical symbols) :

(i) Select the letter which represents an alkali metal.

(ii) Select the letter which represents a noble gas.

(iii) Select the letter which represents a halogen.

(iv) What type of bond is formed between a and e?

(v) What type of bond is formed between d and e?

Discussion

11282.	Question 4 (c) How can you as an individual contribute or make a difference to the management of (c) coal and petroleum?
Answer» Question 4 (c) How can you as an individual contribute or make a difference to the management of (c) coal and petroleum?

Discussion

11283.	The elements whose oxides can turn phenolphthalein solution pink are: (a) Na and K (b) K and C (c) Na and S (d) K and P
Answer» The elements whose oxides can turn phenolphthalein solution pink are: (a) Na and K (b) K and C (c) Na and S (d) K and P

11283.

The elements whose oxides can turn phenolphthalein solution pink are: (a) Na and K (b) K and C (c) Na and S (d) K and P

Answer»

The elements whose oxides can turn phenolphthalein solution pink are:

(a) Na and K

(b) K and C

(c) Na and S

(d) K and P

Discussion

11284.	How to write R,S nomenclature or R,S configuration for a given projection? And how to determine whether the given two compounds are enantiomers or diastereomers using R,S configuration?
Answer» How to write R,S nomenclature or R,S configuration for a given projection? And how to determine whether the given two compounds are enantiomers or diastereomers using R,S configuration?

Discussion

11285.	The radii of F,F−,O and O2− are in the order of
Answer» The radii of $F, F^{-}, O$ and $O^{2 -}$ are in the order of

Discussion

11286.	What is oral rehydration therapy? [2 MARKS]
Answer» What is oral rehydration therapy? [2 MARKS]

Discussion

11287.	Question 10 State two ways to prevent the rusting of iron.
Answer» Question 10 State two ways to prevent the rusting of iron.

Discussion

11288.	Metal A has electronic configuration of 2, 8, 1 and metal B has 2, 8, 8, 2. [5 MARKS] (a) Identify A and B. (b) Give the effect of heat on their: (i) oxides (ii) hydroxides (iii) carbonates
Answer» Metal A has electronic configuration of 2, 8, 1 and metal B has 2, 8, 8, 2. [5 MARKS] (a) Identify A and B. (b) Give the effect of heat on their: (i) oxides (ii) hydroxides (iii) carbonates

Discussion

11289.	Write the names and symbols of two very reactive metals belonging to group 1 of the periodic table. Explain by drawing the electronic structure, how either one of the two metals reacts with a halogen. With which name is the bond formed between these elements known and what is the class of the compound so formed known? State any four physical properties of such compounds.
Answer» Write the names and symbols of two very reactive metals belonging to group 1 of the periodic table. Explain by drawing the electronic structure, how either one of the two metals reacts with a halogen. With which name is the bond formed between these elements known and what is the class of the compound so formed known? State any four physical properties of such compounds.

11289.

Write the names and symbols of two very reactive metals belonging to group 1 of the periodic table. Explain by drawing the electronic structure, how either one of the two metals reacts with a halogen. With which name is the bond formed between these elements known and what is the class of the compound so formed known? State any four physical properties of such compounds.

Answer»

Write the names and symbols of two very reactive metals belonging to group 1 of the periodic table. Explain by drawing the electronic structure, how either one of the two metals reacts with a halogen. With which name is the bond formed between these elements known and what is the class of the compound so formed known?

State any four physical properties of such compounds.

Discussion

11290.	The number of isomers that can be obtained theoretically on monochlorination of 2 - methylbutane is:
Answer» The number of isomers that can be obtained theoretically on monochlorination of 2 - methylbutane is:

Discussion

11291.	Levigation takes advantage of the difference in the __ of the ore and the gangue particles.
Answer» Levigation takes advantage of the difference in the __ of the ore and the gangue particles.

Discussion

11292.	What is pyrolysis or cracking? Explain with an example.
Answer» What is pyrolysis or cracking? Explain with an example.

Discussion

11293.	What name has been given to those organisms which break down the complex organic compounds present in dead animals and plants?
Answer» What name has been given to those organisms which break down the complex organic compounds present in dead animals and plants?

Discussion

11294.	An oxidation process involves ___.
Answer» An oxidation process involves ___.

Discussion

11295.	Choose the statements from the following, regarding salt: Statement 1: All salts are formed by the reaction of HCl and NaOH Statement 2: Salts are formed by the neutralization of acids and bases. Statement 3: Salts are ionic compounds Statement 4: Salts are composed of cations and anions Statement 5: Salts are always white in colour Statement 6: NaCl is called as common salt Statement 7: pH of common salt is 7
Answer» Choose the statements from the following, regarding salt: Statement 1: All salts are formed by the reaction of HCl and NaOH Statement 2: Salts are formed by the neutralization of acids and bases. Statement 3: Salts are ionic compounds Statement 4: Salts are composed of cations and anions Statement 5: Salts are always white in colour Statement 6: NaCl is called as common salt Statement 7: pH of common salt is 7

11295.

Choose the statements from the following, regarding salt: Statement 1: All salts are formed by the reaction of HCl and NaOH Statement 2: Salts are formed by the neutralization of acids and bases. Statement 3: Salts are ionic compounds Statement 4: Salts are composed of cations and anions Statement 5: Salts are always white in colour Statement 6: NaCl is called as common salt Statement 7: pH of common salt is 7

Answer»

Choose the statements from the following, regarding salt:

Statement 1: All salts are formed by the reaction of HCl and NaOH

Statement 2: Salts are formed by the neutralization of acids and bases.

Statement 3: Salts are ionic compounds

Statement 4: Salts are composed of cations and anions

Statement 5: Salts are always white in colour

Statement 6: NaCl is called as common salt

Statement 7: pH of common salt is 7

Discussion

11296.	The correct formula for barytes is :
Answer» The correct formula for barytes is :

Discussion

11297.	Name a covalent compound which behaves like an ionic compound in aqueous solution
Answer» Name a covalent compound which behaves like an ionic compound in aqueous solution

Discussion

11298.	what property of metal makes useful as electrical wires explain this property in terms of the atoms involved
Answer» what property of metal makes useful as electrical wires explain this property in terms of the atoms involved

Discussion

11299.	Why is acetic acid is known as glacial acetic acid
Answer» Why is acetic acid is known as glacial acetic acid

Discussion

11300.	If an element is in group 15 of a modern periodic table then the number of valence electrons it has is
Answer» If an element is in group 15 of a modern periodic table then the number of valence electrons it has is

Discussion

Explore topic-wise InterviewSolutions in .

What is a homologous series and what are its characteristics? [5 MARKS]

Formation of Nitric Oxide is ___ reaction.

Which of the below metal nitrate decomposes to give free metal after heating it?

What does a catalyst do in a reaction?

SnCl2+A→SnS+2HCl SnS+(NH4)2S+S→B Here A and B is:

Identify the Arrhenius acids among the following: 1. NaCl 2. HCl 3. Cu(OH)2 4. NaOH 5. H2SO4 6. HNO3 7. KOH

In electrolysis of water, why is the volume of gas collected over one electrode double that of the other electrode?

Question 56 Explain the given reaction with examples: (a) Hydrogenation (b) Oxidation (c) Substitution (d) Saponification (e) Combustion

explain anodising technique ?

Which of the following is/are the requirements for the formation of a metallic bond? (i) Formation of negative ions. (ii) Formation of positive ions. (iii) Freely moving electrons. (iv) Sharing of electrons between two atoms.

Name two antioxidants which are usually added to fat and oil containing foods to prevent rancidity.

How do you indicate the following effects in a chemical equation? A) A solution made in water B) Exothermic reaction C) Endothermic reaction

Complete the following reaction: K2CO3 + HCl →___________

What happens when dilute HCl is added to iron fillings? Name the type of reaction involved.

(a)What is meant by Functional group? (b)What happens when carbon burns in air? Write the equation.

What happens to (a) the H+ ions, and (b) temperature of the solution, when an acid is neutralised ?

(a) An element X has mass number 40 and contains 21 neutrons in its atom. To which group of the periodic table does it belong? (b) The element X forms a compound X2Y. Suggest an element that Y might be and give reasons for your choice.

A student puts his signature with a graphite pencil. If the mass of carbon in the signature is 1012 g, calculate the number of carbon atoms in the signature.

Condensed formula of pentene is

What are the property of salt?

What are electrolytes?

Can you please give me a little explanation about the super position states..?... and how they can possibly exist....?

Which of the following describes the relationship of Mutualism?

Which of the following reaction is reversible in nature?

how to balance chemical reaction of sodium+ water----&gt;sodium hydroxide+hydrogen please explain in brief

Which of the following metal can be cut with a knife?

Complete and balance the following equations. State the conditions wherever necessary. a) b) C2H4+CL2→…… c) C2H4+HCl→…… d) CaC2+H2O→…… e) C2H2+Br2→…… f) C2H5OH[O]−−−−−→K2Cr2O7…… [5 MARKS]

Substance X conducts electricity when in the solid state. X reacts with Hydrochloric acid. Which substance could X be?

Each of the three elements may or may not have any relationship. These elements may fit into one of these Venn diagrams (a), (b), (c) and (d). Indicate the correct Venn diagram showing the relation between these elements.Elements: week, day, year.

Question 4 (c) How can you as an individual contribute or make a difference to the management of (c) coal and petroleum?

The elements whose oxides can turn phenolphthalein solution pink are: (a) Na and K (b) K and C (c) Na and S (d) K and P

How to write R,S nomenclature or R,S configuration for a given projection? And how to determine whether the given two compounds are enantiomers or diastereomers using R,S configuration?

The radii of F,F−,O and O2− are in the order of

What is oral rehydration therapy? [2 MARKS]

Question 10 State two ways to prevent the rusting of iron.

Metal A has electronic configuration of 2, 8, 1 and metal B has 2, 8, 8, 2. [5 MARKS] (a) Identify A and B. (b) Give the effect of heat on their: (i) oxides (ii) hydroxides (iii) carbonates

The number of isomers that can be obtained theoretically on monochlorination of 2 - methylbutane is:

Levigation takes advantage of the difference in the __ of the ore and the gangue particles.

What is pyrolysis or cracking? Explain with an example.

What name has been given to those organisms which break down the complex organic compounds present in dead animals and plants?

An oxidation process involves ___.

The correct formula for barytes is :

Name a covalent compound which behaves like an ionic compound in aqueous solution

what property of metal makes useful as electrical wires explain this property in terms of the atoms involved

Why is acetic acid is known as glacial acetic acid ​​​​​​

If an element is in group 15 of a modern periodic table then the number of valence electrons it has is

how to balance chemical reaction of sodium+ water---->sodium hydroxide+hydrogen please explain in brief

Why is acetic acid is known as glacial acetic acid