3275 + Interview Questions in Chemistry Page 14 InterviewSolution

651.	What is castner process and castner-kellner process ?
Answer» What is castner process and castner-kellner process ?

Discussion

652.	The energy associated with air is because.........
Answer» The energy associated with air is because.........

Discussion

653.	Which of the following is/are not the source(s) of fresh water?
Answer» Which of the following is/are not the source(s) of fresh water?

Discussion

654.	ntWhich type of dress is used by fire fighters?n
Answer» ntWhich type of dress is used by fire fighters?n

Discussion

655.	What are the advantages of using CNG and LPG as fuels?
Answer» What are the advantages of using CNG and LPG as fuels?

Discussion

656.	What is hybridization and s character in chemistry
Answer» What is hybridization and s character in chemistry

Discussion

657.	Please describe an activity to show that natural water contains air.
Answer» Please describe an activity to show that natural water contains air.

Discussion

658.	Differentiate between the terms - elements, compounds & mixtures.
Answer» Differentiate between the terms - elements, compounds & mixtures.

Discussion

659.	Define what is a sublimable substance. Give few examples.
Answer» Define what is a sublimable substance. Give few examples.

Discussion

660.	A small catchment of area 160 ha received a rainfall of 10.5 cm in 90 minutes due to a storm. At the outlet of the catchment, the stream draining the catchment was dry before the storm and experienced a runoff for 10 hours with an average discharge value of 2.5 m3/sec. The stream was again dry after the runoff event. The amount of water which was not available to runoff due to the combined effect of infiltration, evaporation and transpiration is ________ m3.78000
Answer» A small catchment of area 160 ha received a rainfall of 10.5 cm in 90 minutes due to a storm. At the outlet of the catchment, the stream draining the catchment was dry before the storm and experienced a runoff for 10 hours with an average discharge value of $2.5 m^{3} / s e c .$ The stream was again dry after the runoff event. The amount of water which was not available to runoff due to the combined effect of infiltration, evaporation and transpiration is ________ $m^{3}$ . 78000

Discussion

661.	Which of the following procedures can be used to obtain water which is free from impurities?
Answer» Which of the following procedures can be used to obtain water which is free from impurities?

Discussion

662.	Three experiments to study the process of rusting are given below. Observe the three test tubes and answer the following questions.A. Why the nail in the test tube 2 is not rusted ?B. Why is the nail in the test tube 1 is rusted highly ?C. Would the nail in the test tube 3 get rusted ?
Answer» Three experiments to study the process of rusting are given below. Observe the three test tubes and answer the following questions. A. Why the nail in the test tube 2 is not rusted ? B. Why is the nail in the test tube 1 is rusted highly ? C. Would the nail in the test tube 3 get rusted ?

Discussion

663.	what is the difference between use of coarse adjustment and fine adjustment?
Answer» what is the difference between use of coarse adjustment and fine adjustment?

Discussion

664.	___ is the process by which a liquid absorbs heat and gets converted to vapour.
Answer» ___ is the process by which a liquid absorbs heat and gets converted to vapour.

Discussion

665.	Which type of air does not contain water vapour?
Answer» Which type of air does not contain water vapour?

Discussion

666.	Give reasons: [3 MARKS] a) Clothes do not dry quickly on a cloudy day. b) It is not advisable to fill hydrogen gas in big air balloons. c) Balloons filled with helium gas float up into the air.
Answer» Give reasons: [3 MARKS] a) Clothes do not dry quickly on a cloudy day. b) It is not advisable to fill hydrogen gas in big air balloons. c) Balloons filled with helium gas float up into the air.

Discussion

667.	How would you obtain clear water from a sample of muddy water?
Answer» How would you obtain clear water from a sample of muddy water?

Discussion

668.	Which of the following fibres is not natural?
Answer» Which of the following fibres is not natural?

Discussion

669.	What does the child wish to be? What does the child wish to do with the breeze?
Answer» What does the child wish to be? What does the child wish to do with the breeze?

Discussion

670.	Classify these changes into reversible and irreversible. [5 MARKS] S.NoChanges1Dissolving salt in water2Melting ice cubes3Release of steam from pressure cooker4Ripening of fruits5Freezing orange juice by cooling
Answer» Classify these changes into reversible and irreversible. [5 MARKS] $\begin{matrix} S.No & Changes 1 & Dissolving salt in water 2 & Melting ice cubes 3 & Release of steam from pressure cooker 4 & Ripening of fruits 5 & Freezing orange juice by cooling \end{matrix}$

670.

Classify these changes into reversible and irreversible. [5 MARKS] S.NoChanges1Dissolving salt in water2Melting ice cubes3Release of steam from pressure cooker4Ripening of fruits5Freezing orange juice by cooling

Answer»

Classify these changes into reversible and irreversible. [5 MARKS]

$\begin{matrix} S.No & Changes 1 & Dissolving salt in water 2 & Melting ice cubes 3 & Release of steam from pressure cooker 4 & Ripening of fruits 5 & Freezing orange juice by cooling \end{matrix}$

Discussion

671.	In 1824 ___,a mason in England synthesised cement
Answer» In 1824 ___,a mason in England synthesised cement

Discussion

672.	What is SE reaction?
Answer» What is SE reaction?

Discussion

673.	Differentiate between animal and plant fibres. Give two examples of each.
Answer» Differentiate between animal and plant fibres. Give two examples of each.

Discussion

674.	cobalt and nickel are metal or non metal
Answer» cobalt and nickel are metal or non metal

Discussion

675.	Why seawater is not used for drinking purposes?
Answer» Why seawater is not used for drinking purposes?

Discussion

676.	Suggest various ways by which water pollution can be controlled.
Answer» Suggest various ways by which water pollution can be controlled.

Discussion

677.	what is hunsdiecker's method and rydon method?
Answer» what is hunsdiecker's method and rydon method?

Discussion

678.	What is natural fibre and synthectic fibre give example
Answer» What is natural fibre and synthectic fibre give example

Discussion

679.	The words in the clouds describe something or someone in the story. Name them in the blanks provided.Make sentences of your own with the words given in the clouds.
Answer» The words in the clouds describe something or someone in the story. Name them in the blanks provided. Make sentences of your own with the words given in the clouds.

Discussion

680.	(a) What do you mean by neutralisation? (b) What are the causes of acid rain?
Answer» (a) What do you mean by neutralisation? (b) What are the causes of acid rain?

680.

(a) What do you mean by neutralisation? (b) What are the causes of acid rain?

Answer»

(a) What do you mean by neutralisation?

(b) What are the causes of acid rain?

Discussion

681.	In which direction will a gas exert pressure?
Answer» In which direction will a gas exert pressure?

Discussion

682.	Which method gives a better separation of an insoluble solid from a liquid−sedimentation and decantation, or filtration?
Answer» Which method gives a better separation of an insoluble solid from a liquid−sedimentation and decantation, or filtration?

Discussion

683.	You are given a sample of water. How will you find out whether it is pure or not?
Answer» You are given a sample of water. How will you find out whether it is pure or not?

Discussion

684.	Name two fibres that are used to make clothes, and two materials that are not fibres but are used to make clothes.
Answer» Name two fibres that are used to make clothes, and two materials that are not fibres but are used to make clothes.

Discussion

685.	q is placed at the cornr of cube l ef passing through cube
Answer» q is placed at the cornr of cube l ef passing through cube

Discussion

686.	Question 1 (g)Which separation techniques will you apply for the separation of the following? g. Tea leaves from tea.
Answer» Question 1 (g) Which separation techniques will you apply for the separation of the following? g. Tea leaves from tea.

Discussion

687.	Which of the natural cycles make sure the availability of water for terrestrial animals and plants?
Answer» Which of the natural cycles make sure the availability of water for terrestrial animals and plants?

Discussion

688.	ntIn Haber's process, 30 L of dihydrogen and 30 L of dinitrogen were taken for reaction which yielded only 50% of expected product. What will be composition of gaseous mixture under aforesaid condition in the end?n ntn
Answer» ntIn Haber's process, 30 L of dihydrogen and 30 L of dinitrogen were taken for reaction which yielded only 50% of expected product. What will be composition of gaseous mixture under aforesaid condition in the end?n ntn

Discussion

689.	Winds carrying water vapour bring __________.
Answer» Winds carrying water vapour bring __________.

Discussion

690.	Paheli had brought a new bottle of pickle from the market. She tried to open the metal cap to taste it but could not do so. She then took a bowl of hot water and immersed the upper end of the bottle in it for five minutes. She could easily open the bottle now. Can you give the reason for this?
Answer» Paheli had brought a new bottle of pickle from the market. She tried to open the metal cap to taste it but could not do so. She then took a bowl of hot water and immersed the upper end of the bottle in it for five minutes. She could easily open the bottle now. Can you give the reason for this?

Discussion

691.	Soaking the jute plants in water is called ___________
Answer» Soaking the jute plants in water is called ___________

Discussion

692.	______________ is a region where two or more bones meet.
Answer» ______________ is a region where two or more bones meet.

Discussion

693.	Name a few substances which can be made from nylon.
Answer» Name a few substances which can be made from nylon.

Discussion

694.	What is the term we use to describe substance dissolved in water?
Answer» What is the term we use to describe substance dissolved in water?

Discussion

695.	Question 5Some properties are listed in the following Table. Distinguish between metals and non-metals on the basis of these properties.PropertiesMetalsNon−metals1. Appearance2. Hardness3. Malleability4. Ductility5. Heat Conduction6. Conduction of Electricity
Answer» Question 5 Some properties are listed in the following Table. Distinguish between metals and non-metals on the basis of these properties. $\begin{matrix} P r o p e r t i e s & M e t a l s & N o n - m e t a l s 1. A p p e a r a n c e 2. H a r d n e s s 3. M a l l e a b i l i t y 4. D u c t i l i t y 5. H e a t C o n d u c t i o n 6. C o n d u c t i o n o f E l e c t r i c i t y \end{matrix}$

Discussion

696.	Question 3(a) Some of the gases are easily soluble in water. True or False?(b) Name of gas that is easily soluble in water (HINT: this gas is essential for breathing).
Answer» Question 3 (a) Some of the gases are easily soluble in water. True or False? (b) Name of gas that is easily soluble in water (HINT: this gas is essential for breathing).

696.

Question 3(a) Some of the gases are easily soluble in water. True or False?(b) Name of gas that is easily soluble in water (HINT: this gas is essential for breathing).

Answer»

Question 3

(a) Some of the gases are easily soluble in water. True or False?

(b) Name of gas that is easily soluble in water (HINT: this gas is essential for breathing).

Discussion

697.	Question 07 Which among the following are commonly used for making a safety pin? (a) Wood and glass (b) Plastic and glass (c) Leather and plastic (d) Steel and plastic
Answer» Question 07 Which among the following are commonly used for making a safety pin? (a) Wood and glass (b) Plastic and glass (c) Leather and plastic (d) Steel and plastic

697.

Question 07 Which among the following are commonly used for making a safety pin? (a) Wood and glass (b) Plastic and glass (c) Leather and plastic (d) Steel and plastic

Answer»

Question 07

Which among the following are commonly used for making a safety pin?

(a) Wood and glass

(b) Plastic and glass

(c) Leather and plastic

(d) Steel and plastic

Discussion

698.	Question 4 (c)Least polluting fuel for the vehicle is ___________.
Answer» Question 4 (c) Least polluting fuel for the vehicle is ___________.

Discussion

699.	76 What is the hybridization of Be in BeH2{which is polymeric}?
Answer» 76 What is the hybridization of Be in BeH2{which is polymeric}?

Discussion

700.	Question 4. Name a few crops where you can apply the process of winnowing to separate husk from the grains
Answer» Question 4. Name a few crops where you can apply the process of winnowing to separate husk from the grains

Discussion

Explore topic-wise InterviewSolutions in .

What is castner process and castner-kellner process ?

The energy associated with air is because.........

Which of the following is/are not the source(s) of fresh water?

ntWhich type of dress is used by fire fighters?n

What are the advantages of using CNG and LPG as fuels?

What is hybridization and s character in chemistry

Please describe an activity to show that natural water contains air.

Differentiate between the terms - elements, compounds & mixtures.

Define what is a sublimable substance. Give few examples.

Which of the following procedures can be used to obtain water which is free from impurities?

Three experiments to study the process of rusting are given below. Observe the three test tubes and answer the following questions.A. Why the nail in the test tube 2 is not rusted ?B. Why is the nail in the test tube 1 is rusted highly ?C. Would the nail in the test tube 3 get rusted ?

what is the difference between use of coarse adjustment and fine adjustment?

___ is the process by which a liquid absorbs heat and gets converted to vapour.

Which type of air does not contain water vapour?

Give reasons: [3 MARKS] a) Clothes do not dry quickly on a cloudy day. b) It is not advisable to fill hydrogen gas in big air balloons. c) Balloons filled with helium gas float up into the air.

How would you obtain clear water from a sample of muddy water?

Which of the following fibres is not natural?

What does the child wish to be? What does the child wish to do with the breeze?

Classify these changes into reversible and irreversible. [5 MARKS] S.NoChanges1Dissolving salt in water2Melting ice cubes3Release of steam from pressure cooker4Ripening of fruits5Freezing orange juice by cooling

In 1824 ___,a mason in England synthesised cement

What is SE reaction?

Differentiate between animal and plant fibres. Give two examples of each.

cobalt and nickel are metal or non metal

Why seawater is not used for drinking purposes?

Suggest various ways by which water pollution can be controlled.

what is hunsdiecker's method and rydon method?

What is natural fibre and synthectic fibre give example

The words in the clouds describe something or someone in the story. Name them in the blanks provided.Make sentences of your own with the words given in the clouds.

(a) What do you mean by neutralisation? (b) What are the causes of acid rain?

In which direction will a gas exert pressure?

Which method gives a better separation of an insoluble solid from a liquid−sedimentation and decantation, or filtration?

You are given a sample of water. How will you find out whether it is pure or not?

Name two fibres that are used to make clothes, and two materials that are not fibres but are used to make clothes.

q is placed at the cornr of cube l ef passing through cube

Question 1 (g)Which separation techniques will you apply for the separation of the following? g. Tea leaves from tea.

Which of the natural cycles make sure the availability of water for terrestrial animals and plants?

ntIn Haber's process, 30 L of dihydrogen and 30 L of dinitrogen were taken for reaction which yielded only 50% of expected product. What will be composition of gaseous mixture under aforesaid condition in the end?n ntn

Winds carrying water vapour bring __________.

Paheli had brought a new bottle of pickle from the market. She tried to open the metal cap to taste it but could not do so. She then took a bowl of hot water and immersed the upper end of the bottle in it for five minutes. She could easily open the bottle now. Can you give the reason for this?

Soaking the jute plants in water is called ___________

______________ is a region where two or more bones meet.

Name a few substances which can be made from nylon.

What is the term we use to describe substance dissolved in water?

Question 5Some properties are listed in the following Table. Distinguish between metals and non-metals on the basis of these properties.PropertiesMetalsNon−metals1. Appearance2. Hardness3. Malleability4. Ductility5. Heat Conduction6. Conduction of Electricity

Question 3(a) Some of the gases are easily soluble in water. True or False?(b) Name of gas that is easily soluble in water (HINT: this gas is essential for breathing).

Question 07 Which among the following are commonly used for making a safety pin? (a) Wood and glass (b) Plastic and glass (c) Leather and plastic (d) Steel and plastic

Question 4 (c)Least polluting fuel for the vehicle is ___________.

76 What is the hybridization of Be in BeH2{which is polymeric}?

Question 4. Name a few crops where you can apply the process of winnowing to separate husk from the grains