7248 + Interview Questions in Chemistry Page 124 InterviewSolution

6151.	Why does water affect the solubility of oxygen?
Answer» Why does water affect the solubility of oxygen?

Discussion

6152.	Suggest measures for controlling CO2 level in atmosphere?
Answer» Suggest measures for controlling $C O_{2}$ level in atmosphere?

Discussion

6153.	Which phenomenon is used to explain the displacement of CO2 by O2 in the human lungs?
Answer» Which phenomenon is used to explain the displacement of $C O_{2}$ by $O_{2}$ in the human lungs?

Discussion

6154.	A solution that contains a large amount of solute is most likely to be
Answer» A solution that contains a large amount of solute is most likely to be

Discussion

6155.	Choose the correct option for the underlined phrase. Manek, the cook, wasted no time in preparing meals.
Answer» Choose the correct option for the underlined phrase. Manek, the cook, wasted no time in preparing meals.

6155.

Choose the correct option for the underlined phrase. Manek, the cook, wasted no time in preparing meals.

Answer»

Choose the correct option for the underlined phrase.

Manek, the cook, wasted no time in preparing meals.

Discussion

6156.	As wood is compressed it turns into a black and glossy coal 'X' which is most abundant in nature and has a carbon content of around 78%. Identify the coal 'X'.
Answer» As wood is compressed it turns into a black and glossy coal 'X' which is most abundant in nature and has a carbon content of around $78 %$ . Identify the coal 'X'.

Discussion

6157.	Which of the following statements is correct?
Answer» Which of the following statements is correct?

Discussion

6158.	Mention four substance from your surroundings which a) Shows the change of state in normal temperature. b) Shows the change of state in high temperature.
Answer» Mention four substance from your surroundings which a) Shows the change of state in normal temperature. b) Shows the change of state in high temperature.

6158.

Mention four substance from your surroundings which a) Shows the change of state in normal temperature. b) Shows the change of state in high temperature.

Answer»

Mention four substance from your surroundings which

a) Shows the change of state in normal temperature.

b) Shows the change of state in high temperature.

Discussion

6159.	A liquid can change into vapour state- 1. At a fixed temperature 2. At all temperature Name the process involved in two cases.(Also give two major differences between the process mentioned above.)
Answer» A liquid can change into vapour state- 1. At a fixed temperature 2. At all temperature Name the process involved in two cases.(Also give two major differences between the process mentioned above.)

6159.

A liquid can change into vapour state- 1. At a fixed temperature 2. At all temperature Name the process involved in two cases.(Also give two major differences between the process mentioned above.)

Answer»

A liquid can change into vapour state-

1. At a fixed temperature

2. At all temperature

Name the process involved in two cases.(Also give two major differences between the process mentioned above.)

Discussion

6160.	Why is energy released when new bonds are formedin a chemical reaction?
Answer» Why is energy released when new bonds are formedin a chemical reaction?

Discussion

6161.	Identify the factors that cause the transformation of dead organisms into petroleum and natural gas deep inside the earth?
Answer» Identify the factors that cause the transformation of dead organisms into petroleum and natural gas deep inside the earth?

Discussion

6162.	Which of the following statement about ozone is correct? (a) It is essential for breathing. (b) It absorbs ultraviolet rays. (c) Its proportion in air is about 3 %. (d) It is mainly responsible for global warming.
Answer» Which of the following statement about ozone is correct? (a) It is essential for breathing. (b) It absorbs ultraviolet rays. (c) Its proportion in air is about 3 %. (d) It is mainly responsible for global warming.

6162.

Which of the following statement about ozone is correct? (a) It is essential for breathing. (b) It absorbs ultraviolet rays. (c) Its proportion in air is about 3 %. (d) It is mainly responsible for global warming.

Answer»

Which of the following statement about ozone is correct?

(a) It is essential for breathing.

(b) It absorbs ultraviolet rays.

(c) Its proportion in air is about 3 %.

(d) It is mainly responsible for global warming.

Discussion

6163.	The following table gives the difference between elements and compounds. Which of the given difference is incorrect?
Answer» The following table gives the difference between elements and compounds. Which of the given difference is incorrect?

6163.

The following table gives the difference between elements and compounds. Which of the given difference is incorrect?

Answer»

The following table gives the difference between elements and compounds. Which of the given difference is incorrect?

Discussion

6164.	What is quantum mechanics??
Answer» What is quantum mechanics??

Discussion

6165.	What happens when magnesium is added in cold water?
Answer» What happens when magnesium is added in cold water?

Discussion

6166.	Calculate the number of atoms in one atom of Sodium, Na.
Answer» Calculate the number of atoms in one atom of Sodium, Na.

Discussion

6167.	Why only blue colored flame indicates complete combustion why not green or any other colours?
Answer» Why only blue colored flame indicates complete combustion why not green or any other colours?

Discussion

6168.	According to democritus "When matter is divided into smaller and smaller particles, ultimately a stage is reached when the particles cannot divide further into smaller particles. These tiny particles are called ___ .
Answer» According to democritus "When matter is divided into smaller and smaller particles, ultimately a stage is reached when the particles cannot divide further into smaller particles. These tiny particles are called ___ .

Discussion

6169.	List two advantages of the use of unleaded petrol in automobiles as fuel.
Answer» List two advantages of the use of unleaded petrol in automobiles as fuel.

Discussion

6170.	Equation for corrosion of copper. Pls I require proper equation.
Answer» Equation for corrosion of copper. Pls I require proper equation.

Discussion

6171.	Jalmani programme is about
Answer» Jalmani programme is about

Discussion

6172.	Food becomes black when it is overheated due to the presence of:
Answer» Food becomes black when it is overheated due to the presence of:

Discussion

6173.	Zinc (Zn), Iron (Fe), Aluminium (Al) and Magnesium (Mg) reacts with the dilute hydrochloric acid in different test tubes. Which of the below-mentioned order of metals correctly explains the order of vigour nature of reactions.
Answer» Zinc (Zn), Iron (Fe), Aluminium (Al) and Magnesium (Mg) reacts with the dilute hydrochloric acid in different test tubes. Which of the below-mentioned order of metals correctly explains the order of vigour nature of reactions.

Discussion

6174.	Let's assume, CO gas is dissolved in water till the saturation level. If we will increase the temperature of the water then what will happen:
Answer» Let's assume, CO gas is dissolved in water till the saturation level. If we will increase the temperature of the water then what will happen:

Discussion

6175.	How can a supersaturated solution be prepared from a saturated solution formed at room temperature?
Answer» How can a supersaturated solution be prepared from a saturated solution formed at room temperature?

Discussion

6176.	Question 14 What does CNG stand for and why is it considered to be a better fuel than petrol?
Answer» Question 14 What does CNG stand for and why is it considered to be a better fuel than petrol?

Discussion

6177.	Which of the following property is not responsible for copper to be used as electrical conduction wires?
Answer» Which of the following property is not responsible for copper to be used as electrical conduction wires?

Discussion

6178.	Which of the following battery type is non-rechargeable?
Answer» Which of the following battery type is non-rechargeable?

Discussion

6179.	Match the following. Physical StateSymbol1.Gas(A) (dw)2.Solid(B) (g)3.Liquid(C) (aq)4.Dissolved in water(solution with water)(D) (l)(E) (s)(F) (v)
Answer» Match the following. $\begin{matrix} P h y s i c a l S t a t e & S y m b o l 1. G a s & (A) (d w) 2. S o l i d & (B) (g) 3. L i q u i d & (C) (a q) 4. D i s s o l v e d i n w a t e r (s o l u t i o n w i t h w a t e r) & (D) (l) (E) (s) (F) (v) \end{matrix}$

Discussion

6180.	Why do articles made of aluminum not corrode easily even aluminum is a highly reactive metal?
Answer» Why do articles made of aluminum not corrode easily even aluminum is a highly reactive metal?

Discussion

6181.	Which of the following reacts most vigorously with cold water?
Answer» Which of the following reacts most vigorously with cold water?

Discussion

6182.	In electrolysis of salt water, why Cl gives an electron in anode to form Cl but charges move from charged to uncharged body?
Answer» In electrolysis of salt water, why Cl gives an electron in anode to form Cl but charges move from charged to uncharged body?

Discussion

6183.	What are radicals
Answer» What are radicals

Discussion

6184.	What is the function of potassium chlorate in a matchstick bulb?
Answer» What is the function of potassium chlorate in a matchstick bulb?

Discussion

6185.	(a) What is meant by inexhaustible natural resources ? Name two inexhaustible natural resources. (b) What is meant by exhaustible natural resources ? Name any two exhaustible natural resources.
Answer» (a) What is meant by inexhaustible natural resources ? Name two inexhaustible natural resources. (b) What is meant by exhaustible natural resources ? Name any two exhaustible natural resources.

6185.

(a) What is meant by inexhaustible natural resources ? Name two inexhaustible natural resources. (b) What is meant by exhaustible natural resources ? Name any two exhaustible natural resources.

Answer»

(a) What is meant by inexhaustible natural resources ? Name two inexhaustible natural resources.

(b) What is meant by exhaustible natural resources ? Name any two exhaustible natural resources.

Discussion

6186.	Give two uses of PVC.
Answer» Give two uses of PVC.

Discussion

6187.	Why we can’t make water by adding 2 molecules of hydrogen and a molecule of oxygen?
Answer» Why we can’t make water by adding 2 molecules of hydrogen and a molecule of oxygen?

Discussion

6188.	Pieces of iron taken in a spatula is burnt, but it fails to burn. Hence it can be concluded that iron is a/an:
Answer» Pieces of iron taken in a spatula is burnt, but it fails to burn. Hence it can be concluded that iron is a/an:

Discussion

6189.	Is air a pure substance ? Or a compound or mixture.
Answer» Is air a pure substance ? Or a compound or mixture.

Discussion

6190.	Select a non-metal that is very reactive and so stored in water.
Answer» Select a non-metal that is very reactive and so stored in water.

6190.

Select a non-metal that is very reactive and so stored in water.

Answer»

Select a non-metal that is very reactive and so stored in water.

Discussion

6191.	Assertion (A): Crude petroleum or crude oil pumped out of oil well is not pure. Reason (R): Petroleum is refined to get various fractions which can be used for a specific purpose.
Answer» Assertion (A): Crude petroleum or crude oil pumped out of oil well is not pure. Reason (R): Petroleum is refined to get various fractions which can be used for a specific purpose.

Discussion

6192.	What should be the value of x (coefficient of H2O)? a C6H12O6+b O2→c CO2+x H2O
Answer» What should be the value of x (coefficient of $H_{2} O$ )? $a C_{6} H_{12} O_{6} + b O_{2} \to c C O_{2} + x H_{2} O$

6192.

What should be the value of x (coefficient of H2O)? a C6H12O6+b O2→c CO2+x H2O

Answer»

What should be the value of x (coefficient of $H_{2} O$ )?

$a C_{6} H_{12} O_{6} + b O_{2} \to c C O_{2} + x H_{2} O$

Discussion

6193.	Who is Chadwick
Answer» Who is Chadwick

Discussion

6194.	Chlorine reacts with hot red phosphorus to give:
Answer» Chlorine reacts with hot red phosphorus to give:

Discussion

6195.	Question 25 Paheli prepared a blue coloured solution of copper sulphate in beaker A and placed an iron nail in it. Boojho prepared a yellowish green solution of ferrous sulphate in beaker B and placed a copper wire in it. What changes will they observe in the two beakers after an hour?
Answer» Question 25 Paheli prepared a blue coloured solution of copper sulphate in beaker A and placed an iron nail in it. Boojho prepared a yellowish green solution of ferrous sulphate in beaker B and placed a copper wire in it. What changes will they observe in the two beakers after an hour?

Discussion

6196.	Question 22 Match the items of Column A with those of Column B. Column AColumn B(a)Sulphur dioxide (i)Damage ozone layer(b)Carbon dioxide(ii) Reduces oxygen carrying-capacity of blood(c)Carbon monoxide (iii)Acid rain(d)Chlorfluorocarbons (iv)Greenhouse gas
Answer» Question 22 Match the items of Column A with those of Column B. $\begin{matrix} Column A & Column B (a)Sulphur dioxide & (i)Damage ozone layer (b)Carbon dioxide & (ii) Reduces oxygen carrying-capacity of blood (c)Carbon monoxide & (iii)Acid rain (d)Chlorfluorocarbons & (iv)Greenhouse gas \end{matrix}$

Discussion

6197.	Once the boiling starts, why does the temperature not rise accordingly even when heat is supplied?
Answer» Once the boiling starts, why does the temperature not rise accordingly even when heat is supplied?

Discussion

6198.	During the evaporation of liquid:
Answer» During the evaporation of liquid:

Discussion

6199.	Hydrogen gas is not obtained when zinc reacts with:
Answer» Hydrogen gas is not obtained when zinc reacts with:

Discussion

6200.	2s2;2s22p6,3s2;3s23p6,4s2. Given electronic configuration represents which group?
Answer» $2 s^{2}; 2 s^{2} 2 p^{6}, 3 s^{2}; 3 s^{2} 3 p^{6}, 4 s^{2}$ . Given electronic configuration represents which group?

Discussion

Explore topic-wise InterviewSolutions in .

Why does water affect the solubility of oxygen?

Suggest measures for controlling CO2 level in atmosphere?

Which phenomenon is used to explain the displacement of CO2 by O2 in the human lungs?

A solution that contains a large amount of solute is most likely to be

Choose the correct option for the underlined phrase. Manek, the cook, wasted no time in preparing meals.

As wood is compressed it turns into a black and glossy coal 'X' which is most abundant in nature and has a carbon content of around 78%. Identify the coal 'X'.

Which of the following statements is correct?

Mention four substance from your surroundings which a) Shows the change of state in normal temperature. b) Shows the change of state in high temperature.

A liquid can change into vapour state- 1. At a fixed temperature 2. At all temperature Name the process involved in two cases.(Also give two major differences between the process mentioned above.)

Why is energy released when new bonds are formedin a chemical reaction?

Identify the factors that cause the transformation of dead organisms into petroleum and natural gas deep inside the earth?

Which of the following statement about ozone is correct? (a) It is essential for breathing. (b) It absorbs ultraviolet rays. (c) Its proportion in air is about 3 %. (d) It is mainly responsible for global warming.

The following table gives the difference between elements and compounds. Which of the given difference is incorrect?

What is quantum mechanics??

What happens when magnesium is added in cold water?

Calculate the number of atoms in one atom of Sodium, Na.

Why only blue colored flame indicates complete combustion why not green or any other colours?

According to democritus "When matter is divided into smaller and smaller particles, ultimately a stage is reached when the particles cannot divide further into smaller particles. These tiny particles are called ___ .

List two advantages of the use of unleaded petrol in automobiles as fuel.

Equation for corrosion of copper. Pls I require proper equation.

Jalmani programme is about

Food becomes black when it is overheated due to the presence of:

Zinc (Zn), Iron (Fe), Aluminium (Al) and Magnesium (Mg) reacts with the dilute hydrochloric acid in different test tubes. Which of the below-mentioned order of metals correctly explains the order of vigour nature of reactions.

Let's assume, CO gas is dissolved in water till the saturation level. If we will increase the temperature of the water then what will happen:

How can a supersaturated solution be prepared from a saturated solution formed at room temperature?

Question 14 What does CNG stand for and why is it considered to be a better fuel than petrol?

Which of the following property is not responsible for copper to be used as electrical conduction wires?

Which of the following battery type is non-rechargeable?

Match the following. Physical StateSymbol1.Gas(A) (dw)2.Solid(B) (g)3.Liquid(C) (aq)4.Dissolved in water(solution with water)(D) (l)(E) (s)(F) (v)

Why do articles made of aluminum not corrode easily even aluminum is a highly reactive metal?

Which of the following reacts most vigorously with cold water?

In electrolysis of salt water, why Cl gives an electron in anode to form Cl but charges move from charged to uncharged body?

What are radicals

What is the function of potassium chlorate in a matchstick bulb?

(a) What is meant by inexhaustible natural resources ? Name two inexhaustible natural resources. (b) What is meant by exhaustible natural resources ? Name any two exhaustible natural resources.

Give two uses of PVC.

Why we can’t make water by adding 2 molecules of hydrogen and a molecule of oxygen?

Pieces of iron taken in a spatula is burnt, but it fails to burn. Hence it can be concluded that iron is a/an:

Is air a pure substance ? Or a compound or mixture.

Select a non-metal that is very reactive and so stored in water.

Assertion (A): Crude petroleum or crude oil pumped out of oil well is not pure. Reason (R): Petroleum is refined to get various fractions which can be used for a specific purpose.

What should be the value of x (coefficient of H2O)? a C6H12O6+b O2→c CO2+x H2O

Who is Chadwick

Chlorine reacts with hot red phosphorus to give:

Question 25 Paheli prepared a blue coloured solution of copper sulphate in beaker A and placed an iron nail in it. Boojho prepared a yellowish green solution of ferrous sulphate in beaker B and placed a copper wire in it. What changes will they observe in the two beakers after an hour?

Question 22 Match the items of Column A with those of Column B. Column AColumn B(a)Sulphur dioxide (i)Damage ozone layer(b)Carbon dioxide(ii) Reduces oxygen carrying-capacity of blood(c)Carbon monoxide (iii)Acid rain(d)Chlorfluorocarbons (iv)Greenhouse gas

Once the boiling starts, why does the temperature not rise accordingly even when heat is supplied?

During the evaporation of liquid:

Hydrogen gas is not obtained when zinc reacts with:

2s2;2s22p6,3s2;3s23p6,4s2. Given electronic configuration represents which group?