3275 + Interview Questions in Chemistry Page 26 InterviewSolution

1251.	Which of the following exists?KHF2 KHCl2 KHBr2 KHI2
Answer» Which of the following exists? KHF2 KHCl2 KHBr2 KHI2

Discussion

1252.	Why do we need to separate mixtures into its constituents?
Answer» Why do we need to separate mixtures into its constituents?

Discussion

1253.	What are the characteristics of chemical change?
Answer» What are the characteristics of chemical change?

Discussion

1254.	Give three reasons for using mercury in a thermometer. [3 MARKS]
Answer» Give three reasons for using mercury in a thermometer. [3 MARKS]

Discussion

1255.	Write True/False against the following statements.(a) Oxygen in air is an exhaustible natural resource.(b) Resources which are present in unlimited quantity in nature are called exhaustible natural resources.(c) Wildlife is an exhaustible natural resource.(d) Under high temperature and pressure, dead plants get slowly converted to coal.(e) CNG is less polluting fuel than petrol and diesel.
Answer» Write True/False against the following statements. (a) Oxygen in air is an exhaustible natural resource. (b) Resources which are present in unlimited quantity in nature are called exhaustible natural resources. (c) Wildlife is an exhaustible natural resource. (d) Under high temperature and pressure, dead plants get slowly converted to coal. (e) CNG is less polluting fuel than petrol and diesel.

Discussion

1256.	Which component of air is essential for fertilisers?
Answer» Which component of air is essential for fertilisers?

Discussion

1257.	In which direction does the buoyant force act?
Answer» In which direction does the buoyant force act?

Discussion

1258.	Arnav was observing his mother making breakfast for him from raw eggs and bread. He thought about the possibility of getting back a raw egg from the omelette. He reaches out to his teacher to know about this where he learns that it's not possible to get back raw eggs.
Answer» Arnav was observing his mother making breakfast for him from raw eggs and bread. He thought about the possibility of getting back a raw egg from the omelette. He reaches out to his teacher to know about this where he learns that it's not possible to get back raw eggs.

Discussion

1259.	Does water evaporates below freezing point
Answer» Does water evaporates below freezing point

Discussion

1260.	Raghu had collected some feathers for his science project. Ram, his naughty young brother mixed some sand to his collection.Which method should raghu follow to seperate feather from sand?
Answer» Raghu had collected some feathers for his science project. Ram, his naughty young brother mixed some sand to his collection.Which method should raghu follow to seperate feather from sand?

Discussion

1261.	Size order of li+ ,Na+ ,K+
Answer» Size order of li+ ,Na+ ,K+

Discussion

1262.	What is surf extension?
Answer» What is surf extension?

Discussion

1263.	Define distillation. Give some applications of distilled water.
Answer» Define distillation. Give some applications of distilled water.

Discussion

1264.	does the sorting cover everything
Answer» does the sorting cover everything

Discussion

1265.	How is food preserved?
Answer» How is food preserved?

Discussion

1266.	What are the types of natural fibres? Explain. Classify the following based on the different types of natural fibres: [3 MARKS] S. NoFibres1Cotton2Wool3Silk
Answer» What are the types of natural fibres? Explain. Classify the following based on the different types of natural fibres: [3 MARKS] $\begin{matrix} S. No & Fibres 1 & Cotton 2 & Wool 3 & Silk \end{matrix}$

Discussion

1267.	Fossils are most commonly preserved in
Answer» Fossils are most commonly preserved in

Discussion

1268.	Raju's father smokes every day at home. Due to this Raju may suffer from_______(lung cancer/diabetes).
Answer» Raju's father smokes every day at home. Due to this Raju may suffer from_______(lung cancer/diabetes).

Discussion

1269.	Grouping of materials is helpful because:
Answer» Grouping of materials is helpful because:

Discussion

1270.	What are dispersed particles and dispersed medium
Answer» What are dispersed particles and dispersed medium

Discussion

1271.	What do we call the substance which is composed of two or more elements, and chemically combined in a fixed ratio by mass?
Answer» What do we call the substance which is composed of two or more elements, and chemically combined in a fixed ratio by mass?

Discussion

1272.	Which of the following can dissolve in water?(a) only solids(b) only solids and liquids(c) solids, liquids and gases(d) only liquids
Answer» Which of the following can dissolve in water? (a) only solids (b) only solids and liquids (c) solids, liquids and gases (d) only liquids

Discussion

1273.	Are all liquids good conductor of electricity? Why doesn't electricity flow through wood?
Answer» Are all liquids good conductor of electricity? Why doesn't electricity flow through wood?

Discussion

1274.	Explain oil drop experiment by diagram ??
Answer» Explain oil drop experiment by diagram ??

Discussion

1275.	Briefly describe loom and its functions.
Answer» Briefly describe loom and its functions.

Discussion

1276.	What is sedimentation?
Answer» What is sedimentation?

Discussion

1277.	To get only the pure solid from its solution in water, which method will you use?(a) evaporation(b) distillation(c) filtraction(d) none of these
Answer» To get only the pure solid from its solution in water, which method will you use? (a) evaporation (b) distillation (c) filtraction (d) none of these

Discussion

1278.	Explain the following cycles in your own words with suitable diagrams. a. Carbon cycle.b. Nitrogen cycle.c. Oxygen cycle.
Answer» Explain the following cycles in your own words with suitable diagrams. a. Carbon cycle. b. Nitrogen cycle. c. Oxygen cycle.

Discussion

1279.	Which separation method is used to separate wheat grains from chaff?
Answer» Which separation method is used to separate wheat grains from chaff?

Discussion

1280.	Classify the following substances into compounds and mixtures. Carbon dioxide, air, glucose, milk, ice cream, tap water, common salt, honey.
Answer» Classify the following substances into compounds and mixtures. Carbon dioxide, air, glucose, milk, ice cream, tap water, common salt, honey.

Discussion

1281.	why do we think van Helmont rejected the idea that plants take food from soil ?
Answer» why do we think van Helmont rejected the idea that plants take food from soil ?

Discussion

1282.	What kinds of stories do you like?
Answer» What kinds of stories do you like?

Discussion

1283.	Which one of the following statements about water is false?Water is oxidized to oxygen during photosynthesis Water can act both as an acid and as a baseIce formed by heavy water sinks in normal waterThere is extensive intramolecular hydrogen bonding in the condensed phase
Answer» Which one of the following statements about water is false? Water is oxidized to oxygen during photosynthesis Water can act both as an acid and as a base Ice formed by heavy water sinks in normal water There is extensive intramolecular hydrogen bonding in the condensed phase

1283.

Which one of the following statements about water is false?Water is oxidized to oxygen during photosynthesis Water can act both as an acid and as a baseIce formed by heavy water sinks in normal waterThere is extensive intramolecular hydrogen bonding in the condensed phase

Answer»

Which one of the following statements about water is false?

Water is oxidized to oxygen during photosynthesis
Water can act both as an acid and as a base
Ice formed by heavy water sinks in normal water
There is extensive intramolecular hydrogen bonding in the condensed phase

Discussion

1284.	Statewhether the following statements are ‘True’ or ‘False’?(a) Amixture of milk and water can be separated by filtration.(b) A mixture of powdered salt and sugar can be separated by theprocess of winnowing.(c) Separationof sugar from tea can be done through filtration.(d) Grainand husk can be separated by the process of decantation.
Answer» State whether the following statements are ‘True’ or ‘False’? (a) A mixture of milk and water can be separated by filtration. (b) A mixture of powdered salt and sugar can be separated by the process of winnowing. (c) Separation of sugar from tea can be done through filtration. (d) Grain and husk can be separated by the process of decantation.

1284.

Statewhether the following statements are ‘True’ or ‘False’?(a) Amixture of milk and water can be separated by filtration.(b) A mixture of powdered salt and sugar can be separated by theprocess of winnowing.(c) Separationof sugar from tea can be done through filtration.(d) Grainand husk can be separated by the process of decantation.

Answer»

State
whether the following statements are ‘True’ or ‘False’?

(a) A
mixture of milk and water can be separated by filtration.

(b) A mixture of powdered salt and sugar can be separated by the
process of winnowing.

(c) Separation
of sugar from tea can be done through filtration.

(d) Grain
and husk can be separated by the process of decantation.

Discussion

1285.	List down the sources of water in solid, liquid and gaseous state.
Answer» List down the sources of water in solid, liquid and gaseous state.

Discussion

1286.	Write the molecular formulae of all the compounds that can be formed by the combination of following ionsCu2+,Na+,Fe3+,Cl−,SO24,PO3−4
Answer» Write the molecular formulae of all the compounds that can be formed by the combination of following ions $C u^{2 +}, N a^{+}, F e^{3 +}, C l^{-}, S O_{4}^{2}, P O_{4}^{3 -}$

Discussion

1287.	Does oil dissolve in water? How can you say whether it has dissolved or not?
Answer» Does oil dissolve in water? How can you say whether it has dissolved or not?

Discussion

1288.	the temperature coefficient for reaction in which food deteriorates is 2.then food deteriorates ___________times as rapidly at 25 C as it does at 5 C
Answer» the temperature coefficient for reaction in which food deteriorates is 2.then food deteriorates ___________times as rapidly at 25 C as it does at 5 C

Discussion

1289.	Classify the following as opaque, transparent or translucent, and luminous or non-luminous.Air, Water, A piece of red hot iron, An Umbrella, Firefly, Moon
Answer» Classify the following as opaque, transparent or translucent, and luminous or non-luminous. Air, Water, A piece of red hot iron, An Umbrella, Firefly, Moon

Discussion

1290.	Select those objects from the following which shine: Glass bowl, plastic toy, steel spoon, cotton shirt.
Answer» Select those objects from the following which shine: Glass bowl, plastic toy, steel spoon, cotton shirt.

Discussion

1291.	Are all liquids miscible with water?
Answer» Are all liquids miscible with water?

Discussion

1292.	Solubility of most solids in water increases with rise in temperature. True or false?
Answer» Solubility of most solids in water increases with rise in temperature. True or false?

Discussion

1293.	Food which we eat in our daily life is digested at regular intervals of time. This is a:
Answer» Food which we eat in our daily life is digested at regular intervals of time. This is a:

Discussion

1294.	Differentiate between physical and chemical changes.
Answer» Differentiate between physical and chemical changes.

Discussion

1295.	Name the states of water: Solid ____________; Gas ___________; Liquid ___________
Answer» Name the states of water: Solid ____________; Gas ___________; Liquid ___________

Discussion

1296.	Question 1 (b) Fill up the blank in the following: The process of changing water vapour into water is called ___
Answer» Question 1 (b) Fill up the blank in the following: The process of changing water vapour into water is called ___

1296.

Question 1 (b) Fill up the blank in the following: The process of changing water vapour into water is called ___

Answer»

Question 1 (b)

Fill up the blank in the following:
The process of changing water vapour into water is called ___

Discussion

1297.	What differences can you find in the animals of the bathyal zone when compared to animals of the euphotic zone?
Answer» What differences can you find in the animals of the bathyal zone when compared to animals of the euphotic zone?

Discussion

1298.	How to convert the boiling point of alcohol is 78 degree Celsius what its temperature in Kelvin scale?
Answer» How to convert the boiling point of alcohol is 78 degree Celsius what its temperature in Kelvin scale?

Discussion

1299.	All living things move and all non-living things do not move. True or false?
Answer» All living things move and all non-living things do not move. True or false?

Discussion

1300.	Question 6 What is hard and soft water?
Answer» Question 6 What is hard and soft water?

Discussion

Explore topic-wise InterviewSolutions in .

Which of the following exists?KHF2 KHCl2 KHBr2 KHI2

Why do we need to separate mixtures into its constituents?

What are the characteristics of chemical change?

Give three reasons for using mercury in a thermometer. [3 MARKS]

Which component of air is essential for fertilisers?

In which direction does the buoyant force act?

Arnav was observing his mother making breakfast for him from raw eggs and bread. He thought about the possibility of getting back a raw egg from the omelette. He reaches out to his teacher to know about this where he learns that it's not possible to get back raw eggs.

Does water evaporates below freezing point

Raghu had collected some feathers for his science project. Ram, his naughty young brother mixed some sand to his collection.Which method should raghu follow to seperate feather from sand?

Size order of li+ ,Na+ ,K+

What is surf extension?

Define distillation. Give some applications of distilled water.

does the sorting cover everything

How is food preserved?

What are the types of natural fibres? Explain. Classify the following based on the different types of natural fibres: [3 MARKS] S. NoFibres1Cotton2Wool3Silk

Fossils are most commonly preserved in

Raju's father smokes every day at home. Due to this Raju may suffer from_______(lung cancer/diabetes).

Grouping of materials is helpful because:

What are dispersed particles and dispersed medium

What do we call the substance which is composed of two or more elements, and chemically combined in a fixed ratio by mass?

Which of the following can dissolve in water?(a) only solids(b) only solids and liquids(c) solids, liquids and gases(d) only liquids

Are all liquids good conductor of electricity? Why doesn't electricity flow through wood?

Explain oil drop experiment by diagram ??

Briefly describe loom and its functions.

What is sedimentation?

To get only the pure solid from its solution in water, which method will you use?(a) evaporation(b) distillation(c) filtraction(d) none of these

Explain the following cycles in your own words with suitable diagrams. a. Carbon cycle.b. Nitrogen cycle.c. Oxygen cycle.

Which separation method is used to separate wheat grains from chaff?

Classify the following substances into compounds and mixtures. Carbon dioxide, air, glucose, milk, ice cream, tap water, common salt, honey.

why do we think van Helmont rejected the idea that plants take food from soil ?

What kinds of stories do you like?

Which one of the following statements about water is false?Water is oxidized to oxygen during photosynthesis Water can act both as an acid and as a baseIce formed by heavy water sinks in normal waterThere is extensive intramolecular hydrogen bonding in the condensed phase

List down the sources of water in solid, liquid and gaseous state.

Write the molecular formulae of all the compounds that can be formed by the combination of following ionsCu2+,Na+,Fe3+,Cl−,SO24,PO3−4

Does oil dissolve in water? How can you say whether it has dissolved or not?

the temperature coefficient for reaction in which food deteriorates is 2.then food deteriorates ___________times as rapidly at 25 C as it does at 5 C

Classify the following as opaque, transparent or translucent, and luminous or non-luminous.Air, Water, A piece of red hot iron, An Umbrella, Firefly, Moon

Select those objects from the following which shine: ​Glass bowl, plastic toy, steel spoon, cotton shirt.​

Are all liquids miscible with water?

Solubility of most solids in water increases with rise in temperature. True or false?

Food which we eat in our daily life is digested at regular intervals of time. This is a:

Differentiate between physical and chemical changes.

Name the states of water: Solid ____________; Gas ___________; Liquid ___________

Question 1 (b) Fill up the blank in the following: The process of changing water vapour into water is called ___

What differences can you find in the animals of the bathyal zone when compared to animals of the euphotic zone?

How to convert the boiling point of alcohol is 78 degree Celsius what its temperature in Kelvin scale?

All living things move and all non-living things do not move. True or false?

Question 6 What is hard and soft water?

Select those objects from the following which shine: Glass bowl, plastic toy, steel spoon, cotton shirt.

Name the states of water: Solid ______; Gas _; Liquid _______