5083 + Interview Questions in Chemistry Page 88 InterviewSolution

4351.	Which of the following elements when bonded with halogens form acids?
Answer» Which of the following elements when bonded with halogens form acids?

Discussion

4352.	Which of the following is not endothermic reaction?
Answer» Which of the following is not endothermic reaction?

Discussion

4353.	Which of the following is true with respect to a metal rod?
Answer» Which of the following is true with respect to a metal rod?

Discussion

4354.	On increasing the temperature of a substance, the kinetic energy of its particle ___ (fill increases/decreases)
Answer» On increasing the temperature of a substance, the kinetic energy of its particle ___ (fill increases/decreases)

Discussion

4355.	Why rubbing lemon on wound causes burning?
Answer» Why rubbing lemon on wound causes burning?

Discussion

4356.	Stale food gives a bad taste and a bad smell because of:
Answer» Stale food gives a bad taste and a bad smell because of:

Discussion

4357.	Balance this equation ( I )MgO+H2O=Mg(OH)2
Answer» Balance this equation ( I )MgO+H₂O=Mg(OH)₂

Discussion

4358.	The collection of rainwater which is stored for future use instead of letting the freshwater flow away is known as ___ .
Answer» The collection of rainwater which is stored for future use instead of letting the freshwater flow away is known as ___ .

Discussion

4359.	What is inhaled during respiration?
Answer» What is inhaled during respiration?

Discussion

4360.	Fractional distillation is the separation of a mixture into its component or fractions. This process is based on difference in boiling point of the components in the mixture. This is a special type of distillation. Air is a homogeneous mixture of 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.039% carbon dioxide, and small amounts of other gases such as helium, krypton, nitrogen dioxide etc. Consider three gases oxygen, nitrogen and argon whose boiling points are: -183, -196, -186 degree celsius. They are to be separated from air using fractional distillation. Air is compressed by increasing pressure and is then cooled by decreasing the temperature to form liquid air. This liquid air is allowed to warm-up slowly in a fractional distillation column, where gases get separated at different heights depending upon their boiling points. As the height of tower increases the temperature increases. __ is the gas collected in least volume.
Answer» Fractional distillation is the separation of a mixture into its component or fractions. This process is based on difference in boiling point of the components in the mixture. This is a special type of distillation. Air is a homogeneous mixture of 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.039% carbon dioxide, and small amounts of other gases such as helium, krypton, nitrogen dioxide etc. Consider three gases oxygen, nitrogen and argon whose boiling points are: -183, -196, -186 degree celsius. They are to be separated from air using fractional distillation. Air is compressed by increasing pressure and is then cooled by decreasing the temperature to form liquid air. This liquid air is allowed to warm-up slowly in a fractional distillation column, where gases get separated at different heights depending upon their boiling points. As the height of tower increases the temperature increases. __ is the gas collected in least volume.

4360.

Fractional distillation is the separation of a mixture into its component or fractions. This process is based on difference in boiling point of the components in the mixture. This is a special type of distillation. Air is a homogeneous mixture of 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.039% carbon dioxide, and small amounts of other gases such as helium, krypton, nitrogen dioxide etc. Consider three gases oxygen, nitrogen and argon whose boiling points are: -183, -196, -186 degree celsius. They are to be separated from air using fractional distillation. Air is compressed by increasing pressure and is then cooled by decreasing the temperature to form liquid air. This liquid air is allowed to warm-up slowly in a fractional distillation column, where gases get separated at different heights depending upon their boiling points. As the height of tower increases the temperature increases. __ is the gas collected in least volume.

Answer»

Fractional distillation is the separation of a mixture into its component or fractions. This process is based on difference in boiling point of the components in the mixture. This is a special type of distillation.

Air is a homogeneous mixture of 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.039% carbon dioxide, and small amounts of other gases such as helium, krypton, nitrogen dioxide etc.

Consider three gases oxygen, nitrogen and argon whose boiling points are: -183, -196, -186 degree celsius. They are to be separated from air using fractional distillation.

Air is compressed by increasing pressure and is then cooled by decreasing the temperature to form liquid air. This liquid air is allowed to warm-up slowly in a fractional distillation column, where gases get separated at different heights depending upon their boiling points. As the height of tower increases the temperature increases.

__ is the gas collected in least volume.

Discussion

4361.	Which of these choices is / are example(s) of plasma?
Answer» Which of these choices is / are example(s) of plasma?

Discussion

4362.	The density of water is highest at:
Answer» The density of water is highest at:

Discussion

4363.	The poisonous chemicals are present in which wastewater?
Answer» The poisonous chemicals are present in which wastewater?

Discussion

4364.	Which of the following will be effective in reducing air pollution?
Answer» Which of the following will be effective in reducing air pollution?

Discussion

4365.	Despite natures monsoon bounty, failure to sustain water availability underground is due to:
Answer» Despite natures monsoon bounty, failure to sustain water availability underground is due to:

Discussion

4366.	The finest wool is obtained from merino.
Answer» The finest wool is obtained from merino.

Discussion

4367.	As we keep digging through the different layers of soil, we will reach a point where the surface becomes hard to dig. Which layer of soil is this?
Answer» As we keep digging through the different layers of soil, we will reach a point where the surface becomes hard to dig. Which layer of soil is this?

Discussion

4368.	What is needed for photosynthesis in which carbon dioxide and water react in the presence of chlorophyll to produce glucose and oxygen?
Answer» What is needed for photosynthesis in which carbon dioxide and water react in the presence of chlorophyll to produce glucose and oxygen?

Discussion

4369.	___ temperature is referred as the lowest temperature at which fuel catches fire.
Answer» ___ temperature is referred as the lowest temperature at which fuel catches fire.

Discussion

4370.	What will be the atomicity of the molecule which is consumed during respiration and released during photosynthesis?
Answer» What will be the atomicity of the molecule which is consumed during respiration and released during photosynthesis?

4370.

What will be the atomicity of the molecule which is consumed during respiration and released during photosynthesis?

Answer»

What will be the atomicity of the molecule which is consumed during respiration and released during photosynthesis?

Discussion

4371.	Is fire or energy a matter or element.
Answer» Is fire or energy a matter or element.

Discussion

4372.	In the life cycle of the silk moth,the caterpillar covers itself completely with silk fibre .This covering is known as __.
Answer» In the life cycle of the silk moth,the caterpillar covers itself completely with silk fibre .This covering is known as __.

Discussion

4373.	When treating sewage, which of the following options gives the correct order in which contaminants are removed?
Answer» When treating sewage, which of the following options gives the correct order in which contaminants are removed?

Discussion

4374.	what is gypsum , coral and glass sand
Answer» what is gypsum , coral and glass sand

Discussion

4375.	Blue litmus will change into red litmus by which of these followings?
Answer» Blue litmus will change into red litmus by which of these followings?

Discussion

4376.	According to the lavourioer theory atoms cannot be further divided. But then what are ions
Answer» According to the lavourioer theory atoms cannot be further divided. But then what are ions

4376.

According to the lavourioer theory atoms cannot be further divided. But then what are ions

Answer»

According to the lavourioer theory atoms cannot be further divided.

But then what are ions

Discussion

4377.	Balance a chemical reaction and give reasons for your answer: i.Na +H2O-Na OH+H2
Answer» Balance a chemical reaction and give reasons for your answer: i.Na +H2O-Na OH+H2

4377.

Balance a chemical reaction and give reasons for your answer: i.Na +H2O-Na OH+H2

Answer»

Balance a chemical reaction and give reasons for your answer:

i.Na +H2O-Na OH+H2

Discussion

4378.	From where do we produce glass?
Answer» From where do we produce glass?

Discussion

4379.	Atmospheric pressure decreases with ___ in temperature.
Answer» Atmospheric pressure decreases with ___ in temperature.

Discussion

4380.	Which step of wool processing is shown in the following picture?
Answer» Which step of wool processing is shown in the following picture?

4380.

Which step of wool processing is shown in the following picture?

Answer»

Which step of wool processing is shown in the following picture?

Discussion

4381.	The burning of a wood is:
Answer» The burning of a wood is:

Discussion

4382.	What happens when magnesium metal reacts with the hydrochloric acid?
Answer» What happens when magnesium metal reacts with the hydrochloric acid?

Discussion

4383.	An astronaut gets thirsty on the moon. So, he makes water by mixing hydrogen and oxygen. Will the mass ratio of hydrogen to oxygen present in the water that he made on moon will be same as that on the earth?
Answer» An astronaut gets thirsty on the moon. So, he makes water by mixing hydrogen and oxygen. Will the mass ratio of hydrogen to oxygen present in the water that he made on moon will be same as that on the earth?

Discussion

4384.	What is the term used for the molecular mass of ionic compounds?
Answer» What is the term used for the molecular mass of ionic compounds?

Discussion

4385.	Write significance of writing chemical formula.
Answer» Write significance of writing chemical formula.

Discussion

4386.	Choose the correct option:
Answer» Choose the correct option:

Discussion

4387.	A reaction : A2+B→ Products, involves the following mechanism : A2⇌ 2A (fast) (A being the intermediate) A+B→k2(slow).The rate law consistent to this mechanism is :
Answer» A reaction : $A_{2} + B \to$ Products, involves the following mechanism : $A_{2} ⇌ 2 A (f a s t)$ (A being the intermediate) $A + B \to k_{2} (s l o w)$ .The rate law consistent to this mechanism is :

Discussion

4388.	What does the graph depict?
Answer» What does the graph depict?

4388.

What does the graph depict?

Answer»

What does the graph depict?

Discussion

4389.	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

4390.	Change of seasons is a:
Answer» Change of seasons is a:

Discussion

4391.	Why only is a soft metal like iron and not a hard metal like steel used in an electromagnet circuit
Answer» Why only is a soft metal like iron and not a hard metal like steel used in an electromagnet circuit

Discussion

4392.	What is extinction? What are the causes of extinction? Name any one extinct species. [5 MARKS]
Answer» What is extinction? What are the causes of extinction? Name any one extinct species. [5 MARKS]

Discussion

4393.	Name the solvent where sulphur and phosphorus get dissolved.
Answer» Name the solvent where sulphur and phosphorus get dissolved.

Discussion

4394.	An acid is a compound which furnishes __ ions as the positively charged ions when dissolved in water.
Answer» An acid is a compound which furnishes __ ions as the positively charged ions when dissolved in water.

Discussion

4395.	Question 3 There are ten tube wells in a lane of fifty houses. What could be the long-term impact on the water table?
Answer» Question 3 There are ten tube wells in a lane of fifty houses. What could be the long-term impact on the water table?

Discussion

4396.	How do the fusion point and solidification point of ice and water compare numerically?
Answer» How do the fusion point and solidification point of ice and water compare numerically?

Discussion

4397.	What is the meaning of sewage
Answer» What is the meaning of sewage

Discussion

4398.	Question 17 Figure 3.1 shows three rings of circles with letters in them. Some of these letters in each ring can form the name of one wool yielding animal. Find the names of these animals.
Answer» Question 17 Figure 3.1 shows three rings of circles with letters in them. Some of these letters in each ring can form the name of one wool yielding animal. Find the names of these animals.

4398.

Question 17 Figure 3.1 shows three rings of circles with letters in them. Some of these letters in each ring can form the name of one wool yielding animal. Find the names of these animals.

Answer»

Question 17

Figure 3.1 shows three rings of circles with letters in them. Some of these letters in each ring can form the name of one wool yielding animal. Find the names of these animals.

Discussion

4399.	In villages, we see women separating the grains from the chaff by throwing the grains from a certain height to fall back into a vessel. What is this process called? Explain. [3 MARKS]
Answer» In villages, we see women separating the grains from the chaff by throwing the grains from a certain height to fall back into a vessel. What is this process called? Explain. [3 MARKS]

4399.

In villages, we see women separating the grains from the chaff by throwing the grains from a certain height to fall back into a vessel. What is this process called? Explain. [3 MARKS]

Answer»

In villages, we see women separating the grains from the chaff by throwing the grains from a certain height to fall back into a vessel. What is this process called? Explain. [3 MARKS]

Discussion

4400.	What is meant by the following terms? [3 MARKS] (i) Sericulture (ii) Scouring (iii) Rearing
Answer» What is meant by the following terms? [3 MARKS] (i) Sericulture (ii) Scouring (iii) Rearing

Discussion

Explore topic-wise InterviewSolutions in .

Which of the following elements when bonded with halogens form acids?

Which of the following is not endothermic reaction?

Which of the following is true with respect to a metal rod?

On increasing the temperature of a substance, the kinetic energy of its particle ___ (fill increases/decreases)

Why rubbing lemon on wound causes burning?

Stale food gives a bad taste and a bad smell because of:

Balance this equation ( I )MgO+H2O=Mg(OH)2

The collection of rainwater which is stored for future use instead of letting the freshwater flow away is known as ___ .

What is inhaled during respiration?

Which of these choices is / are example(s) of plasma?

The density of water is highest at:

The poisonous chemicals are present in which wastewater?

Which of the following will be effective in reducing air pollution?

Despite natures monsoon bounty, failure to sustain water availability underground is due to:

The finest wool is obtained from merino.

As we keep digging through the different layers of soil, we will reach a point where the surface becomes hard to dig. Which layer of soil is this?

What is needed for photosynthesis in which carbon dioxide and water react in the presence of chlorophyll to produce glucose and oxygen?

___ temperature is referred as the lowest temperature at which fuel catches fire.

What will be the atomicity of the molecule which is consumed during respiration and released during photosynthesis?

Is fire or energy a matter or element.

In the life cycle of the silk moth,the caterpillar covers itself completely with silk fibre .This covering is known as __.

When treating sewage, which of the following options gives the correct order in which contaminants are removed?

what is gypsum , coral and glass sand

Blue litmus will change into red litmus by which of these followings?

According to the lavourioer theory atoms cannot be further divided. But then what are ions

Balance a chemical reaction and give reasons for your answer: i.Na +H2O-Na OH+H2

From where do we produce glass?

Atmospheric pressure decreases with ___ in temperature.

Which step of wool processing is shown in the following picture?

The burning of a wood is:

What happens when magnesium metal reacts with the hydrochloric acid?

An astronaut gets thirsty on the moon. So, he makes water by mixing hydrogen and oxygen. Will the mass ratio of hydrogen to oxygen present in the water that he made on moon will be same as that on the earth?

What is the term used for the molecular mass of ionic compounds?

Write significance of writing chemical formula.

Choose the correct option:

A reaction : A2+B→ Products, involves the following mechanism : A2⇌ 2A (fast) (A being the intermediate) A+B→k2(slow).The rate law consistent to this mechanism is :

What does the graph depict?

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:

Change of seasons is a:

Why only is a soft metal like iron and not a hard metal like steel used in an electromagnet circuit

What is extinction? What are the causes of extinction? Name any one extinct species. [5 MARKS]

Name the solvent where sulphur and phosphorus get dissolved.

An acid is a compound which furnishes __ ions as the positively charged ions when dissolved in water.

Question 3 There are ten tube wells in a lane of fifty houses. What could be the long-term impact on the water table?

How do the fusion point and solidification point of ice and water compare numerically?

What is the meaning of sewage

Question 17 Figure 3.1 shows three rings of circles with letters in them. Some of these letters in each ring can form the name of one wool yielding animal. Find the names of these animals.

In villages, we see women separating the grains from the chaff by throwing the grains from a certain height to fall back into a vessel. What is this process called? Explain. [3 MARKS]

What is meant by the following terms? [3 MARKS] (i) Sericulture (ii) Scouring (iii) Rearing