5083 + Interview Questions in Chemistry Page 91 InterviewSolution

4501.	When a sample of soil is mixed with some water inside a beaker, the upper layer of soil always floats on top. This layer is called humus. What is it composed of?
Answer» When a sample of soil is mixed with some water inside a beaker, the upper layer of soil always floats on top. This layer is called humus. What is it composed of?

Discussion

4502.	Magnesium burns in oxygen to form:
Answer» Magnesium burns in oxygen to form:

Discussion

4503.	Which of the following property is incorrect about oxygen?
Answer» Which of the following property is incorrect about oxygen?

Discussion

4504.	Is bleaching powder a base?
Answer» Is bleaching powder a base?

Discussion

4505.	In electrolysis of water (acidified), the gases that are evolved at anode and cathode respectively are _________ and _______.
Answer» In electrolysis of water (acidified), the gases that are evolved at anode and cathode respectively are _________ and _______.

Discussion

4506.	Taj is damaged due to acid rain. This phenomenon is famously known as __.
Answer» Taj is damaged due to acid rain. This phenomenon is famously known as __.

Discussion

4507.	How is the volume of water and ice different?
Answer» How is the volume of water and ice different?

Discussion

4508.	Carbon monoxide when combines with haemoglobin it is termed as___.
Answer» Carbon monoxide when combines with haemoglobin it is termed as___.

Discussion

4509.	Question 11 Consider the following statements: Which of these statements are correct? (a) Both acids and bases change colour of all indicators. (b) If an indicator gives a colour change with an acid, it does not give a change with a base. (c) If an indicator changes colour with a base, it does not change colour with an acid. (d) Change of colour in an acid and a base depends on the type of the indicator. Which of these statements are correct? (i) All four (ii) a and d (iii) b and c (iv) only d
Answer» Question 11 Consider the following statements: Which of these statements are correct? (a) Both acids and bases change colour of all indicators. (b) If an indicator gives a colour change with an acid, it does not give a change with a base. (c) If an indicator changes colour with a base, it does not change colour with an acid. (d) Change of colour in an acid and a base depends on the type of the indicator. Which of these statements are correct? (i) All four (ii) a and d (iii) b and c (iv) only d

Discussion

4510.	True/ false slow moving masses of ice are called iceberg
Answer» True/ false slow moving masses of ice are called iceberg

Discussion

4511.	Are the acids or base are used for explosives ??
Answer» Are the acids or base are used for explosives ??

Discussion

4512.	How to make crystal of salt
Answer» How to make crystal of salt

Discussion

4513.	Which of these gases are soluble in liquids?
Answer» Which of these gases are soluble in liquids?

Discussion

4514.	Bakharwal breed of sheep is famous for making
Answer» Bakharwal breed of sheep is famous for making

Discussion

4515.	When rainwater reaches the surface of Earth it gets absorbed and contributes to the water table. This process of seepage of water into the ground is called___.
Answer» When rainwater reaches the surface of Earth it gets absorbed and contributes to the water table. This process of seepage of water into the ground is called___.

Discussion

4516.	What do we mean by extinction?
Answer» What do we mean by extinction?

Discussion

4517.	For the reaction, N2O5(g)→NO2(g)+12O2(g) The value of rate of disappearance of N2O5 is given as 6.25×10−3molL−1s−1. The rate of formation of NO2 and O2 is given respectively as:
Answer» For the reaction, $N_{2} O_{5} (g) \to N O_{2} (g) + \frac{1}{2} O_{2} (g)$ The value of rate of disappearance of $N_{2} O_{5}$ is given as $6.25 \times 10^{- 3} m o l L^{- 1} s^{- 1} .$ The rate of formation of $N O_{2}$ and $O_{2}$ is given respectively as:

Discussion

4518.	What are the chemical changes that are reversible?
Answer» What are the chemical changes that are reversible?

Discussion

4519.	Consider the steps for the balancing of a chemical reaction. Identify the correct sequence. (a) Check the correctness of the balanced equation. (b) Make the list of number of atoms of different elements present in the unbalanced equation. (c) Draw the boxes around each chemical formula (for compound/ element). (d) Choose and balance the second element and so on. (e) Start balancing from the compound which has more number of atoms and balance the first element. (f) Write the symbols of physical states for compounds/ elements.
Answer» Consider the steps for the balancing of a chemical reaction. Identify the correct sequence. (a) Check the correctness of the balanced equation. (b) Make the list of number of atoms of different elements present in the unbalanced equation. (c) Draw the boxes around each chemical formula (for compound/ element). (d) Choose and balance the second element and so on. (e) Start balancing from the compound which has more number of atoms and balance the first element. (f) Write the symbols of physical states for compounds/ elements.

4519.

Consider the steps for the balancing of a chemical reaction. Identify the correct sequence. (a) Check the correctness of the balanced equation. (b) Make the list of number of atoms of different elements present in the unbalanced equation. (c) Draw the boxes around each chemical formula (for compound/ element). (d) Choose and balance the second element and so on. (e) Start balancing from the compound which has more number of atoms and balance the first element. (f) Write the symbols of physical states for compounds/ elements.

Answer»

Consider the steps for the balancing of a chemical reaction. Identify the correct sequence.

(a) Check the correctness of the balanced equation.

(b) Make the list of number of atoms of different elements present in the unbalanced equation.

(c) Draw the boxes around each chemical formula (for compound/ element).

(d) Choose and balance the second element and so on.

(e) Start balancing from the compound which has more number of atoms and balance the first element.

(f) Write the symbols of physical states for compounds/ elements.

Discussion

4520.	Is copper carbonate a base
Answer» Is copper carbonate a base

Discussion

4521.	Namecthe various water resources that are available on earth.
Answer» Namecthe various water resources that are available on earth.

Discussion

4522.	Fill in the blanks ___i___is the volume of air that you take in during normal inspiration, or breathe out during normal expiration. The additional volume of air a person can inspire, beyond the tidal volume by putting in extra effort is____ii_____. The additional volume a person can expire, beyond the tidal volume, that is, after a normal expiration is normally ____iii_____.The volume of air remaining in the lungs after a maximal expiration i.e., the residual volume is normally ____iv_____.
Answer» Fill in the blanks ___i___is the volume of air that you take in during normal inspiration, or breathe out during normal expiration. The additional volume of air a person can inspire, beyond the tidal volume by putting in extra effort is____ii_____. The additional volume a person can expire, beyond the tidal volume, that is, after a normal expiration is normally ____iii_____.The volume of air remaining in the lungs after a maximal expiration i.e., the residual volume is normally ____iv_____.

4522.

Fill in the blanks _i_is the volume of air that you take in during normal inspiration, or breathe out during normal expiration. The additional volume of air a person can inspire, beyond the tidal volume by putting in extra effort is__ii_. The additional volume a person can expire, beyond the tidal volume, that is, after a normal expiration is normally iii_.The volume of air remaining in the lungs after a maximal expiration i.e., the residual volume is normally iv___.

Answer»

Fill in the blanks

___i___is the volume of air that you take in during normal inspiration, or breathe out during normal expiration. The additional volume of air a person can inspire, beyond the tidal volume by putting in extra effort is____ii_____. The additional volume a person can expire, beyond the tidal volume, that is, after a normal expiration is normally ____iii_____.The volume of air remaining in the lungs after a maximal expiration i.e., the residual volume is normally ____iv_____.

Discussion

4523.	What is the difference between formula mass and molecular mass?
Answer» What is the difference between formula mass and molecular mass?

Discussion

4524.	Which of the following are not properties of a base?
Answer» Which of the following are not properties of a base?

Discussion

4525.	Question 3(e) Fill in the blanks in the following statements: Changes in which new substances are formed are called ___ changes.
Answer» Question 3(e) Fill in the blanks in the following statements: Changes in which new substances are formed are called ___ changes.

Discussion

4526.	Question 12 Anaerobic bacteria digest animal waste and produce biogas (Change –A). The biogas is then burnt as fuel (Change –B). The following statements pertain to these changes. Choose the correct one. Which of the above changes is/are chemical change(s)? (i) Process – A is a chemical change. (ii) Process – B is a chemical change. (iii) Both processes A and B are chemical changes. (iv) None of these processes is a chemical change
Answer» Question 12 Anaerobic bacteria digest animal waste and produce biogas (Change –A). The biogas is then burnt as fuel (Change –B). The following statements pertain to these changes. Choose the correct one. Which of the above changes is/are chemical change(s)? (i) Process – A is a chemical change. (ii) Process – B is a chemical change. (iii) Both processes A and B are chemical changes. (iv) None of these processes is a chemical change

Discussion

4527.	Mention any three effects caused due to deforestation [3 MARKS]
Answer» Mention any three effects caused due to deforestation [3 MARKS]

Discussion

4528.	Question 2(c) State whether the following statements are true or false. In case a statement is false, write the corrected statement in your notebook. Iron pipes coated with zinc do not get rusted easily.
Answer» Question 2(c) State whether the following statements are true or false. In case a statement is false, write the corrected statement in your notebook. Iron pipes coated with zinc do not get rusted easily.

Discussion

4529.	What is biota?
Answer» What is biota?

Discussion

4530.	The picture above shows a design plan for the sewage system of Anu’s village. The village Panchayat created this system of closed sewers to prevent sewage from being dumped directly into the Ganga River. When the Panchayat went to the central government to claim funds under the Namami Gange project , the plan was rejected as one crucial element of a sewage system was missing. Which of the following is missing in the plan?
Answer» The picture above shows a design plan for the sewage system of Anu’s village. The village Panchayat created this system of closed sewers to prevent sewage from being dumped directly into the Ganga River. When the Panchayat went to the central government to claim funds under the Namami Gange project , the plan was rejected as one crucial element of a sewage system was missing. Which of the following is missing in the plan?

4530.

The picture above shows a design plan for the sewage system of Anu’s village. The village Panchayat created this system of closed sewers to prevent sewage from being dumped directly into the Ganga River. When the Panchayat went to the central government to claim funds under the Namami Gange project , the plan was rejected as one crucial element of a sewage system was missing. Which of the following is missing in the plan?

Answer»

The picture above shows a design plan for the sewage system of Anu’s village. The village Panchayat created this system of closed sewers to prevent sewage from being dumped directly into the Ganga River. When the Panchayat went to the central government to claim funds under the Namami Gange project , the plan was rejected as one crucial element of a sewage system was missing.

Which of the following is missing in the plan?

Discussion

4531.	A and B are two conductors carrying a current i in the same direction. x and y are two electron beams moving in the same direction
Answer» A and B are two conductors carrying a current i in the same direction. x and y are two electron beams moving in the same direction

Discussion

4532.	For a reaction X → Y, the rate of the reaction has been found to be third order with respect to X. What happens when the concentration of X is doubled.
Answer» For a reaction X $\to$ Y, the rate of the reaction has been found to be third order with respect to X. What happens when the concentration of X is doubled.

Discussion

4533.	__ is a process to convert wastewater into an effluent that can be either returned to the water cycle or get reused.
Answer» __ is a process to convert wastewater into an effluent that can be either returned to the water cycle or get reused.

Discussion

4534.	What is valency shell in atom
Answer» What is valency shell in atom

Discussion

4535.	Do all acids have the word 'acid'at the end of its formula
Answer» Do all acids have the word 'acid'at the end of its formula

Discussion

4536.	Which of the following is the product of neutralization reaction?
Answer» Which of the following is the product of neutralization reaction?

Discussion

4537.	burning of a candle maybe considered as showing physical and chemical changes occuring simultaneously ?
Answer» burning of a candle maybe considered as showing physical and chemical changes occuring simultaneously ?

Discussion

4538.	A first order reaction has a specific reaction rate of 10-2 s-1. How much time will it take for 20 g of the reactant to reduce to 5 g?
Answer» A first order reaction has a specific reaction rate of 10^-2 s^-1. How much time will it take for 20 g of the reactant to reduce to 5 g?

Discussion

4539.	Who discovered the protons and electrons respectively? [2 MARKS]
Answer» Who discovered the protons and electrons respectively? [2 MARKS]

Discussion

4540.	Sorter's disease is caused by:
Answer» Sorter's disease is caused by:

Discussion

4541.	Which of the following is\are correct with respect to carbon monoxide? (i) It is released due to incomplete combustion of fuels. (ii) It does not affect humans. (iii) It is a poisonous gas. (iv) It reduces oxygen-carrying capacity of the blood. (v) It is sometimes released from vehicles.
Answer» Which of the following is\are correct with respect to carbon monoxide? (i) It is released due to incomplete combustion of fuels. (ii) It does not affect humans. (iii) It is a poisonous gas. (iv) It reduces oxygen-carrying capacity of the blood. (v) It is sometimes released from vehicles.

4541.

Which of the following is\are correct with respect to carbon monoxide? (i) It is released due to incomplete combustion of fuels. (ii) It does not affect humans. (iii) It is a poisonous gas. (iv) It reduces oxygen-carrying capacity of the blood. (v) It is sometimes released from vehicles.

Answer»

Which of the following is\are correct with respect to carbon monoxide?

(i) It is released due to incomplete combustion of fuels.

(ii) It does not affect humans.

(iii) It is a poisonous gas.

(iv) It reduces oxygen-carrying capacity of the blood.

(v) It is sometimes released from vehicles.

Discussion

4542.	The process by which wet clothes dry up is known as:
Answer» The process by which wet clothes dry up is known as:

Discussion

4543.	Assertion: Carbon dioxide is used in fire extinguishers. Reason: Carbon dioxide is a colourless and odourless gas.
Answer» Assertion: Carbon dioxide is used in fire extinguishers. Reason: Carbon dioxide is a colourless and odourless gas.

4543.

Assertion: Carbon dioxide is used in fire extinguishers. Reason: Carbon dioxide is a colourless and odourless gas.

Answer»

Assertion: Carbon dioxide is used in fire extinguishers.

Reason: Carbon dioxide is a colourless and odourless gas.

Discussion

4544.	Which of the following(s) is/are olfactory indicators?
Answer» Which of the following(s) is/are olfactory indicators?

Discussion

4545.	Metals are good conductors of heat and___ .
Answer» Metals are good conductors of heat and___ .

Discussion

4546.	Which of these gases are responsible for acid rain?
Answer» Which of these gases are responsible for acid rain?

Discussion

4547.	Which of the following substance is sour in taste?
Answer» Which of the following substance is sour in taste?

Discussion

4548.	Which of these will show no effect on turmeric paper?
Answer» Which of these will show no effect on turmeric paper?

Discussion

4549.	When a water sample is taken from the sea, what will be the ratio of the atoms released upon ionization of a water molecule from the sample?
Answer» When a water sample is taken from the sea, what will be the ratio of the atoms released upon ionization of a water molecule from the sample?

Discussion

4550.	Which of the following breeds of sheep are commonly reared in Gujarat?
Answer» Which of the following breeds of sheep are commonly reared in Gujarat?

Discussion

Explore topic-wise InterviewSolutions in .

When a sample of soil is mixed with some water inside a beaker, the upper layer of soil always floats on top. This layer is called humus. What is it composed of?

Magnesium burns in oxygen to form:

Which of the following property is incorrect about oxygen?

Is bleaching powder a base?

In electrolysis of water (acidified), the gases that are evolved at anode and cathode respectively are _________ and _______.

Taj is damaged due to acid rain. This phenomenon is famously known as __.

How is the volume of water and ice different?

Carbon monoxide when combines with haemoglobin it is termed as___.

True/ false slow moving masses of ice are called iceberg

Are the acids or base are used for explosives ??

How to make crystal of salt

Which of these gases are soluble in liquids?

Bakharwal breed of sheep is famous for making

When rainwater reaches the surface of Earth it gets absorbed and contributes to the water table. This process of seepage of water into the ground is called___.

What do we mean by extinction?

For the reaction, N2O5(g)→NO2(g)+12O2(g) The value of rate of disappearance of N2O5 is given as 6.25×10−3molL−1s−1. The rate of formation of NO2 and O2 is given respectively as:

What are the chemical changes that are reversible?

Is copper carbonate a base

Namecthe various water resources that are available on earth.

What is the difference between formula mass and molecular mass?

Which of the following are not properties of a base?

Question 3(e) Fill in the blanks in the following statements: Changes in which new substances are formed are called ___ changes.

Mention any three effects caused due to deforestation [3 MARKS]

Question 2(c) State whether the following statements are true or false. In case a statement is false, write the corrected statement in your notebook. Iron pipes coated with zinc do not get rusted easily.

What is biota?

A and B are two conductors carrying a current i in the same direction. x and y are two electron beams moving in the same direction

For a reaction X → Y, the rate of the reaction has been found to be third order with respect to X. What happens when the concentration of X is doubled.

__ is a process to convert wastewater into an effluent that can be either returned to the water cycle or get reused.

What is valency shell in atom

Do all acids have the word 'acid'at the end of its formula

Which of the following is the product of neutralization reaction?

burning of a candle maybe considered as showing physical and chemical changes occuring simultaneously ?

A first order reaction has a specific reaction rate of 10-2 s-1. How much time will it take for 20 g of the reactant to reduce to 5 g?

Who discovered the protons and electrons respectively? [2 MARKS]

Sorter's disease is caused by:

Which of the following is\are correct with respect to carbon monoxide? (i) It is released due to incomplete combustion of fuels. (ii) It does not affect humans. (iii) It is a poisonous gas. (iv) It reduces oxygen-carrying capacity of the blood. (v) It is sometimes released from vehicles.

The process by which wet clothes dry up is known as:

Assertion: Carbon dioxide is used in fire extinguishers. Reason: Carbon dioxide is a colourless and odourless gas.

Which of the following(s) is/are olfactory indicators?

Metals are good conductors of heat and___ .

Which of these gases are responsible for acid rain?

Which of the following substance is sour in taste?

Which of these will show no effect on turmeric paper?

When a water sample is taken from the sea, what will be the ratio of the atoms released upon ionization of a water molecule from the sample?

Which of the following breeds of sheep are commonly reared in Gujarat?

In electrolysis of water (acidified), the gases that are evolved at anode and cathode respectively are ___ and _.