10223 + Interview Questions in Chemistry

1.	The component of a vector is. 1) Always less than its magnitude. 2) Always greater than its magnitude. 3) Always equal to its magnitude. 4) None of the above.
Answer» The component of a vector is. 1) Always less than its magnitude. 2) Always greater than its magnitude. 3) Always equal to its magnitude. 4) None of the above.

Discussion

2.	which is stable pt 2+ or pt ?
Answer» which is stable pt 2+ or pt ?

Discussion

3.	Question 22 You are provided with a fine white coloured powder which is either sugar or salt. How would you identify it without tasting?
Answer» Question 22 You are provided with a fine white coloured powder which is either sugar or salt. How would you identify it without tasting?

Discussion

4.	In 10,F, let x be the total number of bond pairsin the molecules, y be the total number of lonepairs in the molecule and z be the total number of90^° angles in IO,F, then x + y + z is(1) 15(2) 17(3) 21(4) 19
Answer» In 10,F, let x be the total number of bond pairsin the molecules, y be the total number of lonepairs in the molecule and z be the total number of90^° angles in IO,F, then x + y + z is(1) 15(2) 17(3) 21(4) 19

Discussion

5.	difference between positional isomerism and metamerism.
Answer» difference between positional isomerism and metamerism.

Discussion

6.	At the start of a reaction, there are 0.249 mol3.21 x 10-2 mol H2 and 6.42 x 10-4 mol NH3.50 L reaction vessel at 375° C. Hence reactionwill proceedin(1) Forward direction (2) Backward direction(3) At equilibrium(4) Stops
Answer» At the start of a reaction, there are 0.249 mol3.21 x 10-2 mol H2 and 6.42 x 10-4 mol NH3.50 L reaction vessel at 375° C. Hence reactionwill proceedin(1) Forward direction (2) Backward direction(3) At equilibrium(4) Stops

Discussion

7.	Explain why, ice at 0∘C is more effective in cooling than water at the same temperature.
Answer» Explain why, ice at $0^{\circ}$ C is more effective in cooling than water at the same temperature.

Discussion

8.	The question consists two statements. Statement A is an Assertion and statement R is the Reason. The question has four choices out of which only one is correct. Choose the correct one. Statement A- Each atom of sodium is 23 times heavier than one atom of hydrogen. Statement R- The atomic weight of sodium is 23 and hydrogen is 1.
Answer» The question consists two statements. Statement A is an Assertion and statement R is the Reason. The question has four choices out of which only one is correct. Choose the correct one. Statement A- Each atom of sodium is 23 times heavier than one atom of hydrogen. Statement R- The atomic weight of sodium is 23 and hydrogen is 1.

8.

The question consists two statements. Statement A is an Assertion and statement R is the Reason. The question has four choices out of which only one is correct. Choose the correct one. Statement A- Each atom of sodium is 23 times heavier than one atom of hydrogen. Statement R- The atomic weight of sodium is 23 and hydrogen is 1.

Answer»

The question consists two statements. Statement A is an Assertion and statement R is the Reason. The question has four choices out of which only one is correct. Choose the correct one.

Statement A- Each atom of sodium is 23 times heavier than one atom of hydrogen.

Statement R- The atomic weight of sodium is 23 and hydrogen is 1.

Discussion

9.	When baking soda is mixed with lemon juice, bubbles are formed with the evolution of a gas. What type of change is it? Explain.
Answer» When baking soda is mixed with lemon juice, bubbles are formed with the evolution of a gas. What type of change is it? Explain.

Discussion

10.	Choose the correct option:Statement 1. Gay Lussac’s law explains about the relation between presssure and temperature at constant volume.Statement 2. Dalton’s law is valid for gases that can react with each other.
Answer» Choose the correct option: Statement 1. Gay Lussac’s law explains about the relation between presssure and temperature at constant volume. Statement 2. Dalton’s law is valid for gases that can react with each other.

10.

Choose the correct option:Statement 1. Gay Lussac’s law explains about the relation between presssure and temperature at constant volume.Statement 2. Dalton’s law is valid for gases that can react with each other.

Answer»

Choose the correct option:

Statement 1. Gay Lussac’s law explains about the relation between presssure and temperature at constant volume.

Statement 2. Dalton’s law is valid for gases that can react with each other.

Discussion

11.	Phenacetin is an _____________.
Answer» Phenacetin is an _____________.

Discussion

12.	Explain limiting reagents through easy numericals
Answer» Explain limiting reagents through easy numericals

Discussion

13.	Why is Phosphorus acid more acidic than phosphoric acid.
Answer» Why is Phosphorus acid more acidic than phosphoric acid.

Discussion

14.	Where does the anode rays are produced from?
Answer» Where does the anode rays are produced from?

Discussion

15.	How many groups and periods are there in the Mendeleev's periodic table?
Answer» How many groups and periods are there in the Mendeleev's periodic table?

Discussion

16.	Describe a method to separate a mixture of camphor and sand.
Answer» Describe a method to separate a mixture of camphor and sand.

Discussion

17.	In which of the following molecules/ions, allthe bonds are not equal?(a) SF (b) SiF, (c) XeF4(d) BF9.AIEEE 2006)
Answer» In which of the following molecules/ions, allthe bonds are not equal?(a) SF (b) SiF, (c) XeF4(d) BF9.AIEEE 2006)

Discussion

18.	Match the following:(i)Oxygen(A)Metal(ii)Sodium(B) Metalloid(iii)Boron(C)Non−metal(iv) Gold(v) Carbon dioxide The correct pairs are:-
Answer» Match the following: $\begin{matrix} (i) & O x y g e n & (A) & M e t a l (i i) & S o d i u m & (B) & M e t a l l o i d (i i i) & B o r o n & (C) & N o n - m e t a l (i v) & G o l d (v) & C a r b o n d i o x i d e \end{matrix}$ The correct pairs are:-

18.

Match the following:(i)Oxygen(A)Metal(ii)Sodium(B) Metalloid(iii)Boron(C)Non−metal(iv) Gold(v) Carbon dioxide The correct pairs are:-

Answer»

Match the following:

\begin{matrix} (i) & O x y g e n & (A) & M e t a l (i i) & S o d i u m & (B) & M e t a l l o i d (i i i) & B o r o n & (C) & N o n - m e t a l (i v) & G o l d (v) & C a r b o n d i o x i d e \end{matrix}

The correct pairs are:-

Discussion

19.	When extremely small particles X derived from the anther of a flower were suspended in a liquid Y and observed through a microscope, it was found that the particles X were moving throughout the liquid Y in a very zig-zag way. It was also observed that warmer the liquid Y, faster the particles X moved on its surface. (a) What could paricles X be ? (b) What do you think liquid Y is ? (c) What is the zig-zag movement of X known as ? (d) What is causing the zig-zag movement of particles X ? (e) Name the scientist who discoverd this phenomenon. (f) What does this experiment tell us about the nature of luquid Y?
Answer» When extremely small particles X derived from the anther of a flower were suspended in a liquid Y and observed through a microscope, it was found that the particles X were moving throughout the liquid Y in a very zig-zag way. It was also observed that warmer the liquid Y, faster the particles X moved on its surface. (a) What could paricles X be ? (b) What do you think liquid Y is ? (c) What is the zig-zag movement of X known as ? (d) What is causing the zig-zag movement of particles X ? (e) Name the scientist who discoverd this phenomenon. (f) What does this experiment tell us about the nature of luquid Y?

19.

When extremely small particles X derived from the anther of a flower were suspended in a liquid Y and observed through a microscope, it was found that the particles X were moving throughout the liquid Y in a very zig-zag way. It was also observed that warmer the liquid Y, faster the particles X moved on its surface. (a) What could paricles X be ? (b) What do you think liquid Y is ? (c) What is the zig-zag movement of X known as ? (d) What is causing the zig-zag movement of particles X ? (e) Name the scientist who discoverd this phenomenon. (f) What does this experiment tell us about the nature of luquid Y?

Answer»

When extremely small particles X derived from the anther of a flower were suspended in a liquid Y and observed through a microscope, it was found that the particles X were moving throughout the liquid Y in a very zig-zag way. It was also observed that warmer the liquid Y, faster the particles X moved on its surface.

(a) What could paricles X be ?

(b) What do you think liquid Y is ?

(c) What is the zig-zag movement of X known as ?

(d) What is causing the zig-zag movement of particles X ?

(e) Name the scientist who discoverd this phenomenon.

(f) What does this experiment tell us about the nature of luquid Y?

Discussion

20.	Question 41What happens when a piece of(a) zinc metal is added to copper sulphate solution?(b) aluminium metal is added to dilute hydrochloric acid?(c) silver metal is added to copper sulphate solution?Also, write the balanced chemical equation if the reaction occurs.
Answer» Question 41 What happens when a piece of (a) zinc metal is added to copper sulphate solution? (b) aluminium metal is added to dilute hydrochloric acid? (c) silver metal is added to copper sulphate solution? Also, write the balanced chemical equation if the reaction occurs.

20.

Question 41What happens when a piece of(a) zinc metal is added to copper sulphate solution?(b) aluminium metal is added to dilute hydrochloric acid?(c) silver metal is added to copper sulphate solution?Also, write the balanced chemical equation if the reaction occurs.

Answer»

Question 41

What happens when a piece of

(a) zinc metal is added to copper sulphate solution?

(b) aluminium metal is added to dilute hydrochloric acid?

(c) silver metal is added to copper sulphate solution?

Also, write the balanced chemical equation if the reaction occurs.

Discussion

21.	Compound (A) produces CO2 gas with NaHCO3. Compound (A) also produces H2 gas with metallic Na. Further, compound (A) gives a positive iodoform test. Structure of (A) is:
Answer» Compound (A) produces $C O_{2}$ gas with $N a H C O_{3}$ . Compound (A) also produces $H_{2}$ gas with metallic Na. Further, compound (A) gives a positive iodoform test. Structure of (A) is:

Discussion

22.	How are 2 CuCl molecules bonded to form Cu2Cl2?
Answer» How are 2 CuCl molecules bonded to form Cu2Cl2?

Discussion

23.	Question 1 In a reaction, 5.3 g of sodium carbonate reacted with 6 g of ethanoic acid. The products were 2.2 g of carbon dioxide, 0.9 g water and 8.2 g of sodium ethanoate. Show that these observations are in agreement with the law of conservation of mass. Sodium carbonate + Ethanoic acid → Sodium ethanoate + Carbon dioxide + Water
Answer» Question 1 In a reaction, 5.3 g of sodium carbonate reacted with 6 g of ethanoic acid. The products were 2.2 g of carbon dioxide, 0.9 g water and 8.2 g of sodium ethanoate. Show that these observations are in agreement with the law of conservation of mass. Sodium carbonate + Ethanoic acid $\to$ Sodium ethanoate + Carbon dioxide + Water

Discussion

24.	Solid can be converted directly to the gaseous state. This process is known as:
Answer» Solid can be converted directly to the gaseous state. This process is known as:

Discussion

25.	(i) Electropositive nature of the element(s) increases down the group and decreases across the period (ii) Electronegativity of the element decreases down the group and increases across the period (iii) Atomic size increases down the group and decreases across a period (left to right) (iv) Metallic character increases down the group and decreases across a period. On the basis of the above trends of the Periodic Table, answer the following about the elements with atomic numbers 3 to 9. Name the element which shows maximum valency.
Answer» (i) Electropositive nature of the element(s) increases down the group and decreases across the period (ii) Electronegativity of the element decreases down the group and increases across the period (iii) Atomic size increases down the group and decreases across a period (left to right) (iv) Metallic character increases down the group and decreases across a period. On the basis of the above trends of the Periodic Table, answer the following about the elements with atomic numbers 3 to 9. Name the element which shows maximum valency.

Discussion

26.	Calculate the concentration of F- ion if 10 mg of F- ion present in 1L solution?
Answer» Calculate the concentration of F- ion if 10 mg of F- ion present in 1L solution?

Discussion

27.	How is molecular motion related with temperatue?
Answer» How is molecular motion related with temperatue?

Discussion

28.	An atom has electronic configuration 2, 8, 7. What is the atomic number of this element?
Answer» An atom has electronic configuration 2, 8, 7. What is the atomic number of this element?

Discussion

29.	Which of the following elements are called representative elements?
Answer» Which of the following elements are called representative elements?

Discussion

30.	Which one of the elements has the maximum electron affinity?
Answer» Which one of the elements has the maximum electron affinity?

Discussion

31.	Comment on the following statements. a. Evaporation produces cooling. b. Rate of evaporation of an aqueous solution decreases with an increase in the humidity. c. Sponge though compressible is a solid.
Answer» Comment on the following statements. a. Evaporation produces cooling. b. Rate of evaporation of an aqueous solution decreases with an increase in the humidity. c. Sponge though compressible is a solid.

Discussion

32.	Is relative motion be in three or more bodies explain
Answer» Is relative motion be in three or more bodies explain

Discussion

33.	Explain the terms, empirical formula and molecular formula.
Answer» Explain the terms, empirical formula and molecular formula.

Discussion

34.	Intermixing of particles of two different types of matter is called
Answer» Intermixing of particles of two different types of matter is called

Discussion

35.	Write formulae of the following compounds:Sodium phosphate, aluminium chloride, calcium oxide, potassium nitrate, ammonium hydroxide.
Answer» Write formulae of the following compounds: Sodium phosphate, aluminium chloride, calcium oxide, potassium nitrate, ammonium hydroxide.

35.

Write formulae of the following compounds:Sodium phosphate, aluminium chloride, calcium oxide, potassium nitrate, ammonium hydroxide.

Answer»

Write formulae of the following compounds:

Sodium phosphate, aluminium chloride, calcium oxide, potassium nitrate, ammonium hydroxide.

Discussion

36.	64.If the first ionisation energy of H atom is 13.6 eV. The second ionisation energy of He atom will be?
Answer» 64.If the first ionisation energy of H atom is 13.6 eV. The second ionisation energy of He atom will be?

Discussion

37.	What is the full form of IUPAC? [1 MARK]
Answer» What is the full form of IUPAC? [1 MARK]

Discussion

38.	what is the relation between temperature and solubility , when solute is in 1.gaseous state2.solid state3.liquid state
Answer» what is the relation between temperature and solubility , when solute is in 1.gaseous state 2.solid state 3.liquid state

Discussion

39.	What would happen if microbes in the soil get destroyed?
Answer» What would happen if microbes in the soil get destroyed?

Discussion

40.	The standard oxidation potentials, Eo, for the half cell reactions are as follows:Zn→Zn2++2e−, Eo=0.76 VFe→Fe2++2e−, Eo=0.41 VThe EMF for the cell oxidation,Fe2++Zn→Zn2++Fe(Give your answer upto two decimal only)
Answer» The standard oxidation potentials, $E^{o}$ , for the half cell reactions are as follows: $Z n \to Z n^{2 +} + 2 e^{-}, E^{o} = 0.76 V F e \to F e^{2 +} + 2 e^{-}, E^{o} = 0.41 V$ The EMF for the cell oxidation, $F e^{2 +} + Z n \to Z n^{2 +} + F e$ (Give your answer upto two decimal only)

Discussion

41.	निम्नलिखित प्रश्न के उत्तर एक-दो पंक्तियों में दीजिए − रामन् के पिता ने उनमें किन विषयों की सशक्त नींव डाली?
Answer» निम्नलिखित प्रश्न के उत्तर एक-दो पंक्तियों में दीजिए − रामन् के पिता ने उनमें किन विषयों की सशक्त नींव डाली?

41.

निम्नलिखित प्रश्न के उत्तर एक-दो पंक्तियों में दीजिए − रामन् के पिता ने उनमें किन विषयों की सशक्त नींव डाली?

Answer»

निम्नलिखित प्रश्न के उत्तर एक-दो पंक्तियों में दीजिए −

रामन् के पिता ने उनमें किन विषयों की सशक्त नींव डाली?

Discussion

42.	Question 3What is the interparticle force of attraction?
Answer» Question 3 What is the interparticle force of attraction?

42.

Question 3What is the interparticle force of attraction?

Answer»

Question 3

What is the interparticle force of attraction?

Discussion

43.	Fill in the following blanks with suitable words :The smell of perfume gradually spreads across a room due to ____
Answer» Fill in the following blanks with suitable words : The smell of perfume gradually spreads across a room due to ____

Discussion

44.	How to calculate the value of m for all types of orbitals ?
Answer» How to calculate the value of m for all types of orbitals ?

Discussion

45.	Write the composition of air.
Answer» Write the composition of air.

Discussion

46.	does the atomic masses of elements chane when they lose and gain electrons ?
Answer» does the atomic masses of elements chane when they lose and gain electrons ?

Discussion

47.	It a question from byjus science workbook biology part...but the answer is in chemistry? The question is Explain how the fragrance of an incense sick burning in a corner of the room can be felt throughout the room
Answer» It a question from byjus science workbook biology part...but the answer is in chemistry? The question is Explain how the fragrance of an incense sick burning in a corner of the room can be felt throughout the room

47.

It a question from byjus science workbook biology part...but the answer is in chemistry? The question is Explain how the fragrance of an incense sick burning in a corner of the room can be felt throughout the room

Answer»

It a question from byjus science workbook biology part...but the answer is in chemistry? The question is

Explain how the fragrance of an incense sick burning in a corner of the room can be felt throughout the room

Discussion

48.	A solution contains 50 mL of ethyl alcohol in 450 mL of water. Calculate the concentration of the solution in terms of volume by volume percentage.10
Answer» A solution contains 50 mL of ethyl alcohol in 450 mL of water. Calculate the concentration of the solution in terms of volume by volume percentage. 10

Discussion

49.	what volume of 0.05M Ca(oh)2 solution is needed for complete conversion of 10ml of 0.1M H3Po4 into Ca(H2po4)2
Answer» what volume of 0.05M Ca(oh)2 solution is needed for complete conversion of 10ml of 0.1M H3Po4 into Ca(H2po4)2

Discussion

50.	Why do particles of matter move?
Answer» Why do particles of matter move?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

The component of a vector is. 1) Always less than its magnitude. 2) Always greater than its magnitude. 3) Always equal to its magnitude. 4) None of the above.

which is stable pt 2+ or pt ?

Question 22 You are provided with a fine white coloured powder which is either sugar or salt. How would you identify it without tasting?

In 10,F, let x be the total number of bond pairsin the molecules, y be the total number of lonepairs in the molecule and z be the total number of90^° angles in IO,F, then x + y + z is(1) 15(2) 17(3) 21(4) 19

difference between positional isomerism and metamerism.

At the start of a reaction, there are 0.249 mol3.21 x 10-2 mol H2 and 6.42 x 10-4 mol NH3.50 L reaction vessel at 375° C. Hence reactionwill proceedin(1) Forward direction (2) Backward direction(3) At equilibrium(4) Stops

Explain why, ice at 0∘C is more effective in cooling than water at the same temperature.

When baking soda is mixed with lemon juice, bubbles are formed with the evolution of a gas. What type of change is it? Explain.​

Choose the correct option:Statement 1. Gay Lussac’s law explains about the relation between presssure and temperature at constant volume.Statement 2. Dalton’s law is valid for gases that can react with each other.

Phenacetin is an _____________.

Explain limiting reagents through easy numericals

Why is Phosphorus acid more acidic than phosphoric acid.

Where does the anode rays are produced from?

How many groups and periods are there in the Mendeleev's periodic table?

Describe a method to separate a mixture of camphor and sand.

In which of the following molecules/ions, allthe bonds are not equal?(a) SF (b) SiF, (c) XeF4(d) BF9.AIEEE 2006)

Match the following:(i)Oxygen(A)Metal(ii)Sodium(B) Metalloid(iii)Boron(C)Non−metal(iv) Gold(v) Carbon dioxide The correct pairs are:-

Question 41What happens when a piece of(a) zinc metal is added to copper sulphate solution?(b) aluminium metal is added to dilute hydrochloric acid?(c) silver metal is added to copper sulphate solution?Also, write the balanced chemical equation if the reaction occurs.

Compound (A) produces CO2 gas with NaHCO3. Compound (A) also produces H2 gas with metallic Na. Further, compound (A) gives a positive iodoform test. Structure of (A) is:

How are 2 CuCl molecules bonded to form Cu2Cl2?

Solid can be converted directly to the gaseous state. This process is known as:

Calculate the concentration of F- ion if 10 mg of F- ion present in 1L solution?

How is molecular motion related with temperatue?

An atom has electronic configuration 2, 8, 7. What is the atomic number of this element?

Which of the following elements are called representative elements?

Which one of the elements has the maximum electron affinity?

Comment on the following statements. a. Evaporation produces cooling. b. Rate of evaporation of an aqueous solution decreases with an increase in the humidity. c. Sponge though compressible is a solid.

Is relative motion be in three or more bodies explain

Explain the terms, empirical formula and molecular formula.

Intermixing of particles of two different types of matter is called

Write formulae of the following compounds:Sodium phosphate, aluminium chloride, calcium oxide, potassium nitrate, ammonium hydroxide.

64.If the first ionisation energy of H atom is 13.6 eV. The second ionisation energy of He atom will be?

What is the full form of IUPAC? [1 MARK]

what is the relation between temperature and solubility , when solute is in 1.gaseous state2.solid state3.liquid state

What would happen if microbes in the soil get destroyed?

The standard oxidation potentials, Eo, for the half cell reactions are as follows:Zn→Zn2++2e−, Eo=0.76 VFe→Fe2++2e−, Eo=0.41 VThe EMF for the cell oxidation,Fe2++Zn→Zn2++Fe(Give your answer upto two decimal only)

निम्नलिखित प्रश्न के उत्तर एक-दो पंक्तियों में दीजिए − रामन् के पिता ने उनमें किन विषयों की सशक्त नींव डाली?

Question 3What is the interparticle force of attraction?

Fill in the following blanks with suitable words :The smell of perfume gradually spreads across a room due to ____

How to calculate the value of m for all types of orbitals ?

Write the composition of air.

does the atomic masses of elements chane when they lose and gain electrons ?

It a question from byjus science workbook biology part...but the answer is in chemistry? The question is Explain how the fragrance of an incense sick burning in a corner of the room can be felt throughout the room

A solution contains 50 mL of ethyl alcohol in 450 mL of water. Calculate the concentration of the solution in terms of volume by volume percentage.10

what volume of 0.05M Ca(oh)2 solution is needed for complete conversion of 10ml of 0.1M H3Po4 into Ca(H2po4)2

Why do particles of matter move?

When baking soda is mixed with lemon juice, bubbles are formed with the evolution of a gas. What type of change is it? Explain.