10223 + Interview Questions in Chemistry Page 178 InterviewSolution

8851.	How did Dobereiner made his periodic table in the form of triad or the form of the table
Answer» How did Dobereiner made his periodic table in the form of triad or the form of the table

Discussion

8852.	What is the common oxidation state of all elements of alkali metals ?
Answer» What is the common oxidation state of all elements of alkali metals ?

Discussion

8853.	When we burn paper the smoke comes is this a process of susublimation?
Answer» When we burn paper the smoke comes is this a process of susublimation?

Discussion

8854.	Is H2 a molecule or an element ?
Answer» Is H2 a molecule or an element ?

Discussion

8855.	The relative number and kinds of atoms are constant in a given compound.
Answer» The relative number and kinds of atoms are constant in a given compound.

Discussion

8856.	Question 2 Name the substance which on treatment with chlorine yields bleaching powder.
Answer» Question 2 Name the substance which on treatment with chlorine yields bleaching powder.

Discussion

8857.	When a solid melts, its temperature remains the same.so where does the heat energy go
Answer» When a solid melts, its temperature remains the same.so where does the heat energy go

Discussion

8858.	Explain with examples that rate of diffusion decreases with increase in density of solutes.
Answer» Explain with examples that rate of diffusion decreases with increase in density of solutes.

Discussion

8859.	The law of constant proportions was given by:
Answer» The law of constant proportions was given by:

Discussion

8860.	water exists in all the three states discuss
Answer» water exists in all the three states discuss

Discussion

8861.	When we compressed the gas with no space left then will remain in gaseous state or it will change into an another state?
Answer» When we compressed the gas with no space left then will remain in gaseous state or it will change into an another state?

Discussion

8862.	How does perspiration, coolers, earthen pots, cotton clothes and spirit on hand display cooling effect of evaporation?
Answer» How does perspiration, coolers, earthen pots, cotton clothes and spirit on hand display cooling effect of evaporation?

Discussion

8863.	What do you mean by bulk phenomenon? Why boiling is called bulk phenomenon?
Answer» What do you mean by bulk phenomenon? Why boiling is called bulk phenomenon?

8863.

What do you mean by bulk phenomenon? Why boiling is called bulk phenomenon?

Answer»

What do you mean by bulk phenomenon?

Why boiling is called bulk phenomenon?

Discussion

8864.	How to calculate atomic mass?please remember that no.of neutron plus protons is called mass number.
Answer» How to calculate atomic mass?please remember that no.of neutron plus protons is called mass number.

Discussion

8865.	Statement 1: The solubility of sodium sulphate first increases then decreases. Statement 2: This represents anomalous solubility of sodium sulphate.
Answer» Statement 1: The solubility of sodium sulphate first increases then decreases. Statement 2: This represents anomalous solubility of sodium sulphate.

8865.

Statement 1: The solubility of sodium sulphate first increases then decreases. Statement 2: This represents anomalous solubility of sodium sulphate.

Answer»

Statement 1: The solubility of sodium sulphate first increases then decreases.

Statement 2: This represents anomalous solubility of sodium sulphate.

Discussion

8866.	Which among the following has the maximum electron affinity?
Answer» Which among the following has the maximum electron affinity?

Discussion

8867.	Of the two allotropes- white and red phosphorus, __ phosphorus does not react with alkali solution.
Answer» Of the two allotropes- white and red phosphorus, __ phosphorus does not react with alkali solution.

Discussion

8868.	The air that covers the whole of earth like a blanket is called _______.
Answer» The air that covers the whole of earth like a blanket is called _______.

Discussion

8869.	Question 42 What happens when zinc granules are treated with dilute solution of H2SO4,HCl,HNO3, NaCl and NaOH? Also write the chemical equations if reaction occurs.
Answer» Question 42 What happens when zinc granules are treated with dilute solution of $H_{2} {SO}_{4}, HCl, {HNO}_{3}$ , $NaCl$ and $NaOH$ ? Also write the chemical equations if reaction occurs.

Discussion

8870.	Bakelite is obtained from phenol by reacting with
Answer» Bakelite is obtained from phenol by reacting with

Discussion

8871.	Question 48 (d) (a) Electropositive nature of the element(s) increases down the group and decreases across the period (b) Electronegativity of the element decreases down the group and increases across the period (c) Atomic size increases down the group and decreases across a period (left to right) (d) 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 is a metalloid.
Answer» Question 48 (d) (a) Electropositive nature of the element(s) increases down the group and decreases across the period (b) Electronegativity of the element decreases down the group and increases across the period (c) Atomic size increases down the group and decreases across a period (left to right) (d) 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 is a metalloid.

Discussion

8872.	If Z = 6, what would be the valency of the element?
Answer» If Z = 6, what would be the valency of the element?

Discussion

8873.	Question 7 (f) Which of the following materials fall in the category of a “pure substance”? f. Mercury
Answer» Question 7 (f) Which of the following materials fall in the category of a “pure substance”? f. Mercury

Discussion

8874.	(a) What is meant by 'diffusion'? Give one example of diffusion in gases. (b) Why do gases diffuse very fast? (c) Name two gases of air which dissolve in water by diffusion. What is the importance of this process in nature?
Answer» (a) What is meant by 'diffusion'? Give one example of diffusion in gases. (b) Why do gases diffuse very fast? (c) Name two gases of air which dissolve in water by diffusion. What is the importance of this process in nature?

8874.

(a) What is meant by 'diffusion'? Give one example of diffusion in gases. (b) Why do gases diffuse very fast? (c) Name two gases of air which dissolve in water by diffusion. What is the importance of this process in nature?

Answer»

(a) What is meant by 'diffusion'? Give one example of diffusion in gases.

(b) Why do gases diffuse very fast?

(c) Name two gases of air which dissolve in water by diffusion. What is the importance of this process in nature?

Discussion

8875.	Look at the following reaction: LiH+AlH3⟶LiAlH4 Here AlH3 and LiH act as:
Answer» Look at the following reaction: $L i H + A l H_{3} ⟶ L i A l H_{4}$ Here $A l H_{3}$ and $L i H$ act as:

Discussion

8876.	Question 33 The visible universe is estimated to contain 1022 stars. How many moles of stars are present in the visible universe?
Answer» Question 33 The visible universe is estimated to contain 10²² stars. How many moles of stars are present in the visible universe?

Discussion

8877.	Rashi mixed 10gm of iron with 5.8 gm of sulphur to form a compound. What will be the molecular mass of the compound produced?
Answer» Rashi mixed 10gm of iron with 5.8 gm of sulphur to form a compound. What will be the molecular mass of the compound produced?

Discussion

8878.	What is S P D etc. method of placing electrons in the orbit shell?
Answer» What is S P D etc. method of placing electrons in the orbit shell?

Discussion

8879.	Define solution. STATEMENT 1: A solution is a homogenous mixture of two or more substances. STATEMENT 2: We can have solid solutions as alloys. STATEMENT 3: A solution has homogeneity at the particle level. STATEMENT 4: Lemonade is an example of a solution.
Answer» Define solution. STATEMENT 1: A solution is a homogenous mixture of two or more substances. STATEMENT 2: We can have solid solutions as alloys. STATEMENT 3: A solution has homogeneity at the particle level. STATEMENT 4: Lemonade is an example of a solution.

8879.

Define solution. STATEMENT 1: A solution is a homogenous mixture of two or more substances. STATEMENT 2: We can have solid solutions as alloys. STATEMENT 3: A solution has homogeneity at the particle level. STATEMENT 4: Lemonade is an example of a solution.

Answer»

Define solution.

STATEMENT 1: A solution is a homogenous mixture of two or more substances.

STATEMENT 2: We can have solid solutions as alloys.

STATEMENT 3: A solution has homogeneity at the particle level.

STATEMENT 4: Lemonade is an example of a solution.

Discussion

8880.	Question 49 (c) An element X which is a yellow solid at room temperature shows catenation and allotropy. X forms two oxides which are also formed during the thermal decomposition of ferrous sulphate crystals and are the major air pollutants Write the balanced chemical equation for the thermal decomposition of ferrous sulphate crystals.
Answer» Question 49 (c) An element X which is a yellow solid at room temperature shows catenation and allotropy. X forms two oxides which are also formed during the thermal decomposition of ferrous sulphate crystals and are the major air pollutants Write the balanced chemical equation for the thermal decomposition of ferrous sulphate crystals.

Discussion

8881.	Calculate the number of magnesium ions present in 0.51 g of magnesium chloride?
Answer» Calculate the number of magnesium ions present in 0.51 g of magnesium chloride?

Discussion

8882.	The atomic masses and chemical properties of Sulphur and Phosphorus are different. This can be explained on the basis of:
Answer» The atomic masses and chemical properties of Sulphur and Phosphorus are different. This can be explained on the basis of:

Discussion

8883.	Dissolving sugar in water is ___________ change.
Answer» Dissolving sugar in water is ___________ change.

Discussion

8884.	Give reason- A gas filled completely the vessel in which it is kept
Answer» Give reason- A gas filled completely the vessel in which it is kept

Discussion

8885.	A gas fills completely the vessel in which it is kept. Why
Answer» A gas fills completely the vessel in which it is kept. Why

Discussion

8886.	Good evening mentor what about the number of electrons housed in first shell and second shell Are they fixed with the number 2,8 respectively Thank you
Answer» Good evening mentor what about the number of electrons housed in first shell and second shell Are they fixed with the number 2,8 respectively Thank you

Discussion

8887.	Would you term curd formation as a chemical change ? Justify your answer.
Answer» Would you term curd formation as a chemical change ? Justify your answer.

Discussion

8888.	THIS IS THE QUESTION TAKEN FROM 1985 BOARD ICSE PAPER OF 10TH XCL2 is the chloride of a metal X.state the formula of the sulphate and hydroxide of the metal X
Answer» THIS IS THE QUESTION TAKEN FROM 1985 BOARD ICSE PAPER OF 10TH XCL2 is the chloride of a metal X.state the formula of the sulphate and hydroxide of the metal X

Discussion

8889.	If you dropped a piece of ice at 0°C into water at 0°C, what would happen to ice? Assume the system is isolated.
Answer» If you dropped a piece of ice at 0°C into water at 0°C, what would happen to ice? Assume the system is isolated.

Discussion

8890.	Amphipathy meaning with examples
Answer» Amphipathy meaning with examples

Discussion

8891.	Matter has ______.
Answer» Matter has ______.

Discussion

8892.	Each amino acid is formed of one basic group and one ___ group.
Answer» Each amino acid is formed of one basic group and one ___ group.

Discussion

8893.	Does the Newlands law will be correct if we take aluminium as the first element
Answer» Does the Newlands law will be correct if we take aluminium as the first element

Discussion

8894.	i have seen in many youtube videos that they make a bulb to light up using some potatos.how this is possible?????
Answer» i have seen in many youtube videos that they make a bulb to light up using some potatos.how this is possible?????

Discussion

8895.	According to Newland, which element will resemble the property of the first element and what property?
Answer» According to Newland, which element will resemble the property of the first element and what property?

Discussion

8896.	Passing carbon dioxide through slaked lime gives:
Answer» Passing carbon dioxide through slaked lime gives:

Discussion

8897.	Why are metals sonorous and non metals are non sonorous?
Answer» Why are metals sonorous and non metals are non sonorous?

Discussion

8898.	Super saturated solution
Answer» Super saturated solution

Discussion

8899.	A boy is instructed to run around a circular track on the ground for 1 hour. He loses all his energy in half an hour and falls down. Imagine the boy to be an electron and the ground as an atom. The drawback of which atomic model can you relate to this?
Answer» A boy is instructed to run around a circular track on the ground for 1 hour. He loses all his energy in half an hour and falls down. Imagine the boy to be an electron and the ground as an atom. The drawback of which atomic model can you relate to this?

Discussion

8900.	What is a molecule?
Answer» What is a molecule?

Discussion

Explore topic-wise InterviewSolutions in .

How did Dobereiner made his periodic table in the form of triad or the form of the table

What is the common oxidation state of all elements of alkali metals ?

When we burn paper the smoke comes is this a process of susublimation?

Is H2 a molecule or an element ?

The relative number and kinds of atoms are constant in a given compound.

Question 2 Name the substance which on treatment with chlorine yields bleaching powder.

When a solid melts, its temperature remains the same.so where does the heat energy go

Explain with examples that rate of diffusion decreases with increase in density of solutes.

The law of constant proportions was given by:

water exists in all the three states discuss

When we compressed the gas with no space left then will remain in gaseous state or it will change into an another state?

How does perspiration, coolers, earthen pots, cotton clothes and spirit on hand display cooling effect of evaporation?

What do you mean by bulk phenomenon? Why boiling is called bulk phenomenon?

How to calculate atomic mass?please remember that no.of neutron plus protons is called mass number.

Statement 1: The solubility of sodium sulphate first increases then decreases. Statement 2: This represents anomalous solubility of sodium sulphate.

Which among the following has the maximum electron affinity?

Of the two allotropes- white and red phosphorus, __ phosphorus does not react with alkali solution.

The air that covers the whole of earth like a blanket is called _______.

Question 42 What happens when zinc granules are treated with dilute solution of H2SO4,HCl,HNO3, NaCl and NaOH? Also write the chemical equations if reaction occurs.

Bakelite is obtained from phenol by reacting with

If Z = 6, what would be the valency of the element?

Question 7 (f) Which of the following materials fall in the category of a “pure substance”? f. Mercury

(a) What is meant by 'diffusion'? Give one example of diffusion in gases. (b) Why do gases diffuse very fast? (c) Name two gases of air which dissolve in water by diffusion. What is the importance of this process in nature?

Look at the following reaction: LiH+AlH3⟶LiAlH4 Here AlH3 and LiH act as:

Question 33 The visible universe is estimated to contain 1022 stars. How many moles of stars are present in the visible universe?

Rashi mixed 10gm of iron with 5.8 gm of sulphur to form a compound. What will be the molecular mass of the compound produced?

What is S P D etc. method of placing electrons in the orbit shell?

Define solution. STATEMENT 1: A solution is a homogenous mixture of two or more substances. STATEMENT 2: We can have solid solutions as alloys. STATEMENT 3: A solution has homogeneity at the particle level. STATEMENT 4: Lemonade is an example of a solution.

Calculate the number of magnesium ions present in 0.51 g of magnesium chloride?

The atomic masses and chemical properties of Sulphur and Phosphorus are different. This can be explained on the basis of:

Dissolving sugar in water is ___________ change.

Give reason- A gas filled completely the vessel in which it is kept

A gas fills completely the vessel in which it is kept. Why

Good evening mentor what about the number of electrons housed in first shell and second shell Are they fixed with the number 2,8 respectively Thank you

Would you term curd formation as a chemical change ? Justify your answer.

THIS IS THE QUESTION TAKEN FROM 1985 BOARD ICSE PAPER OF 10TH XCL2 is the chloride of a metal X.state the formula of the sulphate and hydroxide of the metal X

If you dropped a piece of ice at 0°C into water at 0°C, what would happen to ice? Assume the system is isolated.

Amphipathy meaning with examples

Matter has ______.

Each amino acid is formed of one basic group and one ___ group.

Does the Newlands law will be correct if we take aluminium as the first element

i have seen in many youtube videos that they make a bulb to light up using some potatos.how this is possible?????

According to Newland, which element will resemble the property of the first element and what property?

Passing carbon dioxide through slaked lime gives:

Why are metals sonorous and non metals are non sonorous?

Super saturated solution

A boy is instructed to run around a circular track on the ground for 1 hour. He loses all his energy in half an hour and falls down. Imagine the boy to be an electron and the ground as an atom. The drawback of which atomic model can you relate to this?

What is a molecule?