3275 + Interview Questions in Chemistry Page 32 InterviewSolution

1551.	Which of the following diagram correctly represents photosynthesis (X)? Note:- X possess the properties of both the changes.
Answer» Which of the following diagram correctly represents photosynthesis (X)? Note:- X possess the properties of both the changes.

1551.

Which of the following diagram correctly represents photosynthesis (X)? Note:- X possess the properties of both the changes.

Answer»

Which of the following diagram correctly represents photosynthesis (X)?

Note:- X possess the properties of both the changes.

1552.	Difference between PURE SUBSTANCES and mixtures,3 points
Answer» Difference between PURE SUBSTANCES and mixtures,3 points

Discussion

1553.	Water spilled on the floor vanishes after some time even when left unattended. This is because of phenomenon X.The formation of droplets on the outer surface of a glass tumbler containing cold water is due to phenomenon Y. Which one of the following is correct?
Answer» Water spilled on the floor vanishes after some time even when left unattended. This is because of phenomenon X.The formation of droplets on the outer surface of a glass tumbler containing cold water is due to phenomenon Y. Which one of the following is correct?

Discussion

1554.	Identify the following as animal and plant fibres: cotton, cashmere, flax, jute, wool, silk
Answer» Identify the following as animal and plant fibres: cotton, cashmere, flax, jute, wool, silk

Discussion

1555.	is the process in which earthworms are mixed with organic waste to make compost.
Answer» is the process in which earthworms are mixed with organic waste to make compost.

Discussion

1556.	23.Combustion of 5 g coke of coke raised temp of 1 kg water from 10degree to 47 degree calculate fule value of coke in kcal/ gm
Answer» 23.Combustion of 5 g coke of coke raised temp of 1 kg water from 10degree to 47 degree calculate fule value of coke in kcal/ gm

Discussion

1557.	What is terylene and orlon
Answer» What is terylene and orlon

Discussion

1558.	What are the examples of desirable changes.
Answer» What are the examples of desirable changes.

Discussion

1559.	Explain condensation:
Answer» Explain condensation:

Discussion

1560.	Pick the odd material out: [1 MARK] Cotton, sponge, wool, iron
Answer» Pick the odd material out: [1 MARK] Cotton, sponge, wool, iron

1560.

Pick the odd material out: [1 MARK] Cotton, sponge, wool, iron

Answer»

Pick the odd material out: [1 MARK]

Cotton, sponge, wool, iron

Discussion

1561.	Which of the given changes are observed when sugar is heated?
Answer» Which of the given changes are observed when sugar is heated?

Discussion

1562.	What evidence do we have for the origin of life from inanimate matter? [5 MARKS]
Answer» What evidence do we have for the origin of life from inanimate matter? [5 MARKS]

Discussion

1563.	A small quantity of curd is added to warm milk. The milk is stirred and is set aside for few hours at a warm place. In a few hours, the curd is formed. This is an irreversible change because
Answer» A small quantity of curd is added to warm milk. The milk is stirred and is set aside for few hours at a warm place. In a few hours, the curd is formed. This is an irreversible change because

1563.

A small quantity of curd is added to warm milk. The milk is stirred and is set aside for few hours at a warm place. In a few hours, the curd is formed. This is an irreversible change because

Answer»

A small quantity of curd is added to warm milk. The milk is stirred and is set aside for few hours at a warm place. In a few hours, the curd is formed. This is an irreversible change because

Discussion

1564.	Pick the objects that float on water.
Answer» Pick the objects that float on water.

Discussion

1565.	Question 13 (a)Evaporation of a liquid at room temperature leads to a ___ effect.
Answer» Question 13 (a) Evaporation of a liquid at room temperature leads to a ___ effect.

Discussion

1566.	Name the gas which diffuse in water and there use
Answer» Name the gas which diffuse in water and there use

Discussion

1567.	2x+5-6=31
Answer» 2x+5-6=31

Discussion

1568.	How do we classify materials based on the amount of light they allow to pass through them?
Answer» How do we classify materials based on the amount of light they allow to pass through them?

Discussion

1569.	You are provided with a mixture of petroleum and water. Can you suggest a method to separate the two?
Answer» You are provided with a mixture of petroleum and water. Can you suggest a method to separate the two?

Discussion

1570.	Answer in brief : (a) How are mixtures formed? (b) Why do we need to separate substances from their mixtures? (c) Name the methods used to separate substances from mixtures. (d) What is sublimation?
Answer» Answer in brief : (a) How are mixtures formed? (b) Why do we need to separate substances from their mixtures? (c) Name the methods used to separate substances from mixtures. (d) What is sublimation?

1570.

Answer in brief : (a) How are mixtures formed? (b) Why do we need to separate substances from their mixtures? (c) Name the methods used to separate substances from mixtures. (d) What is sublimation?

Answer»

Answer in brief :

(a) How are mixtures formed?

(b) Why do we need to separate substances from their mixtures?

(c) Name the methods used to separate substances from mixtures.

(d) What is sublimation?

Discussion

1571.	How does pH affect aquatic life?
Answer» How does pH affect aquatic life?

Discussion

1572.	Fill in the blanks:a) Plant fibres are obtained from ______ and _______.b) Animal fibres are ______ and ______.
Answer» Fill in the blanks: a) Plant fibres are obtained from ______ and _______. b) Animal fibres are ______ and ______.

Discussion

1573.	The latent heat of ice is ___________ latent heat of vaizationof water.
Answer» The latent heat of ice is ___________ latent heat of vaizationof water.

Discussion

1574.	Which of these methods will you use to obtain both the solid and the liquid from a solution?(a) separating funnel(b) evaporation(c) distillation(d) decantation and filtration
Answer» Which of these methods will you use to obtain both the solid and the liquid from a solution? (a) separating funnel (b) evaporation (c) distillation (d) decantation and filtration

Discussion

1575.	On lowering the temperature, a liquid turns into a solid. What is this process called?
Answer» On lowering the temperature, a liquid turns into a solid. What is this process called?

Discussion

1576.	What is polar molecules?
Answer» What is polar molecules?

Discussion

1577.	Give two situations where it is necessary to separate a mixture into its constituents.
Answer» Give two situations where it is necessary to separate a mixture into its constituents.

Discussion

1578.	What is Telluric helix ?
Answer» What is Telluric helix ?

Discussion

1579.	What is edge dislocation and screw dislocation defect?
Answer» What is edge dislocation and screw dislocation defect?

Discussion

1580.	A nail is hammered into a wooden plank, but during the process, the nail gets bent. Is this a reversible or an irreversible change?
Answer» A nail is hammered into a wooden plank, but during the process, the nail gets bent. Is this a reversible or an irreversible change?

Discussion

1581.	what is ambidentate and bidentate, tridentate. ligands ?
Answer» what is ambidentate and bidentate, tridentate. ligands ?

Discussion

1582.	Shock absorber in earthquake resistant building is called ___.
Answer» Shock absorber in earthquake resistant building is called ___.

Discussion

1583.	When a candle burns, both physical and chemical changes occur. Explain.
Answer» When a candle burns, both physical and chemical changes occur. Explain.

Discussion

1584.	What is the difference between fibre and yarn?
Answer» What is the difference between fibre and yarn?

Discussion

1585.	14.4moles of pcl5 dissociate at 760k in a 2l flask pcl5=pcl3+cl2 at equilibrium. 0.8mol of cl2 was present in the flash. The equilibrium constant would be
Answer» 14.4moles of pcl5 dissociate at 760k in a 2l flask pcl5=pcl3+cl2 at equilibrium. 0.8mol of cl2 was present in the flash. The equilibrium constant would be

Discussion

1586.	How to write electronic configuration of elements having atomic no greater than 80?
Answer» How to write electronic configuration of elements having atomic no greater than 80?

Discussion

1587.

A Game of OppositesThe entire class can be divided into two groups where one group says one word and the second group says the opposite word. Group IGroup IIeg. pullpushblack_______true_right_________This is how the game goes on. Some words are suggested here.You may pick up some more words from the lesson. fargooddarkupold

Answer»

A Game of Opposites

The entire class can be divided into two groups where one group says one word and the second group says the opposite word.

Group I	Group II
eg. pull	push
black	_______________
true	_______________
right	_______________

This is how the game goes on. Some words are suggested here.

You may pick up some more words from the lesson.

far

good

dark

up

old

Discussion

1588.	Why fully filled mug will be partially immersed in water whereas mug which is not filled will float on water?(both of them are same material mug)
Answer» Why fully filled mug will be partially immersed in water whereas mug which is not filled will float on water?(both of them are same material mug)

Discussion

1589.	Which among the following is an example of a reversible change?
Answer» Which among the following is an example of a reversible change?

Discussion

1590.	Which of the following methods uses the device known as 'charkha'?
Answer» Which of the following methods uses the device known as 'charkha'?

Discussion

1591.	Air contains nitrogen and oxygen in 4:1 ratio of volumes. Prove it with an experiment. Also make a diagram depicting the same. [5 MARKS]
Answer» Air contains nitrogen and oxygen in 4:1 ratio of volumes. Prove it with an experiment. Also make a diagram depicting the same. [5 MARKS]

Discussion

1592.	Water is a universal solvent Give reason for your answer
Answer» Water is a universal solvent Give reason for your answer

Discussion

1593.	(i) Name the process of conversion of wood into coal.(ii) Name the country which is the leading producer of petroleum.(iii) Name the gas that occurs over petroleum in reservoirs deep inside the earth.(iv)Where and when was the first oil well drilled?(v) What is the full form of PCRA?
Answer» (i) Name the process of conversion of wood into coal. (ii) Name the country which is the leading producer of petroleum. (iii) Name the gas that occurs over petroleum in reservoirs deep inside the earth. (iv)Where and when was the first oil well drilled? (v) What is the full form of PCRA?

1593.

(i) Name the process of conversion of wood into coal.(ii) Name the country which is the leading producer of petroleum.(iii) Name the gas that occurs over petroleum in reservoirs deep inside the earth.(iv)Where and when was the first oil well drilled?(v) What is the full form of PCRA?

Answer»

(i) Name the process of conversion of wood into coal.

(ii) Name the country which is the leading producer of petroleum.

(iii) Name the gas that occurs over petroleum in reservoirs deep inside the earth.

(iv)Where and when was the first oil well drilled?

(v) What is the full form of PCRA?

Discussion

1594.	The thermo emf of a thermocouple varies with the temperature theta of the hot junction as E=a theta +b theta square V Where the ratio of a and b is 700^°C. If the cold junction is kept at 0^°C,then the neutral temperature is
Answer» The thermo emf of a thermocouple varies with the temperature theta of the hot junction as E=a theta +b theta square V Where the ratio of a and b is 700^°C. If the cold junction is kept at 0^°C,then the neutral temperature is

Discussion

1595.	When we use iso , neo , sec ,tert as a prefix in nomenclature?? explain.
Answer» When we use iso , neo , sec ,tert as a prefix in nomenclature?? explain.

Discussion

1596.	Which separation method is based on gravity?
Answer» Which separation method is based on gravity?

Discussion

1597.	Name the elements which form water. State three characteristics of water to justify that it is a compound.
Answer» Name the elements which form water. State three characteristics of water to justify that it is a compound.

Discussion

1598.	Consider the reaction 2A to 3B + C. Starting with pure A initially the total pressure doubled in 3 hours . What can be the order of reaction
Answer» Consider the reaction 2A to 3B + C. Starting with pure A initially the total pressure doubled in 3 hours . What can be the order of reaction

Discussion

1599.	Question 14‘Ozone-hole’ means(a) a large sized hole in the ozone layer(b) thinning of the ozone layer(c) small holes scattered in the ozone layer(d) thickening of ozone in the ozone layer
Answer» Question 14 ‘Ozone-hole’ means (a) a large sized hole in the ozone layer (b) thinning of the ozone layer (c) small holes scattered in the ozone layer (d) thickening of ozone in the ozone layer

Discussion

1600.	Describe how coal is formed from dead vegetation. What is this process called?
Answer» Describe how coal is formed from dead vegetation. What is this process called?

Discussion

Explore topic-wise InterviewSolutions in .

Which of the following diagram correctly represents photosynthesis (X)? Note:- X possess the properties of both the changes.

Difference between PURE SUBSTANCES and mixtures,3 points

Water spilled on the floor vanishes after some time even when left unattended. This is because of phenomenon X.The formation of droplets on the outer surface of a glass tumbler containing cold water is due to phenomenon Y. Which one of the following is correct?

Identify the following as animal and plant fibres: cotton, cashmere, flax, jute, wool, silk

is the process in which earthworms are mixed with organic waste to make compost.

23.Combustion of 5 g coke of coke raised temp of 1 kg water from 10degree to 47 degree calculate fule value of coke in kcal/ gm

What is terylene and orlon

What are the examples of desirable changes.

Explain condensation:

Pick the odd material out: [1 MARK] Cotton, sponge, wool, iron

Which of the given changes are observed when sugar is heated?

What evidence do we have for the origin of life from inanimate matter? [5 MARKS]

A small quantity of curd is added to warm milk. The milk is stirred and is set aside for few hours at a warm place. In a few hours, the curd is formed. This is an irreversible change because

Pick the objects that float on water.

Question 13 (a)Evaporation of a liquid at room temperature leads to a ___ effect.

Name the gas which diffuse in water and there use

2x+5-6=31

How do we classify materials based on the amount of light they allow to pass through them?

You are provided with a mixture of petroleum and water. Can you suggest a method to separate the two?

Answer in brief : (a) How are mixtures formed? (b) Why do we need to separate substances from their mixtures? (c) Name the methods used to separate substances from mixtures. (d) What is sublimation?

How does pH affect aquatic life?

Fill in the blanks:​a) Plant fibres are obtained from ______ and _______.​b) Animal fibres are ______ and ______.

The latent heat of ice is ___________ latent heat of vaizationof water.

Which of these methods will you use to obtain both the solid and the liquid from a solution?(a) separating funnel(b) evaporation(c) distillation(d) decantation and filtration

On lowering the temperature, a liquid turns into a solid. What is this process called?

What is polar molecules?

Give two situations where it is necessary to separate a mixture into its constituents.

What is Telluric helix ?

What is edge dislocation and screw dislocation defect?

A nail is hammered into a wooden plank, but during the process, the nail gets bent. Is this a reversible or an irreversible change?

what is ambidentate and bidentate, tridentate. ligands ?

Shock absorber in earthquake resistant building is called ___.

When a candle burns, both physical and chemical changes occur. Explain.

What is the difference between fibre and yarn?

14.4moles of pcl5 dissociate at 760k in a 2l flask pcl5=pcl3+cl2 at equilibrium. 0.8mol of cl2 was present in the flash. The equilibrium constant would be

How to write electronic configuration of elements having atomic no greater than 80?

Why fully filled mug will be partially immersed in water whereas mug which is not filled will float on water?(both of them are same material mug)

Which among the following is an example of a reversible change?

Which of the following methods uses the device known as 'charkha'?

Air contains nitrogen and oxygen in 4:1 ratio of volumes. Prove it with an experiment. Also make a diagram depicting the same. [5 MARKS]

Water is a universal solvent Give reason for your answer

(i) Name the process of conversion of wood into coal.(ii) Name the country which is the leading producer of petroleum.(iii) Name the gas that occurs over petroleum in reservoirs deep inside the earth.(iv)Where and when was the first oil well drilled?(v) What is the full form of PCRA?

The thermo emf of a thermocouple varies with the temperature theta of the hot junction as E=a theta +b theta square V Where the ratio of a and b is 700^°C. If the cold junction is kept at 0^°C,then the neutral temperature is

When we use iso , neo , sec ,tert as a prefix in nomenclature?? explain.

Which separation method is based on gravity?

Name the elements which form water. State three characteristics of water to justify that it is a compound.

Consider the reaction 2A to 3B + C. Starting with pure A initially the total pressure doubled in 3 hours . What can be the order of reaction

Question 14‘Ozone-hole’ means(a) a large sized hole in the ozone layer(b) thinning of the ozone layer(c) small holes scattered in the ozone layer(d) thickening of ozone in the ozone layer

Describe how coal is formed from dead vegetation. What is this process called?

Fill in the blanks:a) Plant fibres are obtained from __ and _.b) Animal fibres are and __.