5083 + Interview Questions in Chemistry Page 80 InterviewSolution

3951.	Which of the following statement is true?
Answer» Which of the following statement is true?

Discussion

3952.	What is the term used for when the seed coat softens and results in absorption of moisture?
Answer» What is the term used for when the seed coat softens and results in absorption of moisture?

Discussion

3953.	CNG is preferred over petrol as a fuel for transport vehicles. Which of these options justifies the statement?
Answer» CNG is preferred over petrol as a fuel for transport vehicles. Which of these options justifies the statement?

Discussion

3954.	Megha was told to observe an experiment and note down its details. This is what she wrote A jar of clear water was put on the boil. The steam was allowed to escape. When the volume of water became almost half its original volume, the gas was switched off. When the water cooled down to room temperature, a powdery substance whitish in colour was seen stuck to its sides. Megha was told to (1) To name the process from the mileu of names:- galvanization, precipitation , sublimation, corrosion, evaporation. (2) To name the powdery substance. (3) To explain why this powdery substance formed. (4) What kind of change could this be? [2 MARKS]
Answer» Megha was told to observe an experiment and note down its details. This is what she wrote A jar of clear water was put on the boil. The steam was allowed to escape. When the volume of water became almost half its original volume, the gas was switched off. When the water cooled down to room temperature, a powdery substance whitish in colour was seen stuck to its sides. Megha was told to (1) To name the process from the mileu of names:- galvanization, precipitation , sublimation, corrosion, evaporation. (2) To name the powdery substance. (3) To explain why this powdery substance formed. (4) What kind of change could this be? [2 MARKS]

Discussion

3955.	State your observation with chemical equation : Aqueous solution of ferrous sulphate is treated with sodium hydroxide
Answer» State your observation with chemical equation : Aqueous solution of ferrous sulphate is treated with sodium hydroxide

3955.

State your observation with chemical equation : Aqueous solution of ferrous sulphate is treated with sodium hydroxide

Answer»

State your observation with chemical equation :

Aqueous solution of ferrous sulphate is treated with sodium hydroxide

Discussion

3956.	Question 19 Complete the given table Form of waterProcess by which formedLocation where found(a) Liquid (b) Solid (c) Gaseous
Answer» Question 19 Complete the given table $\begin{matrix} F o r m o f w a t e r & P r o c e s s b y w h i c h f o r m e d & L o c a t i o n w h e r e f o u n d (a) L i q u i d (b) S o l i d (c) G a s e o u s \end{matrix}$

3956.

Question 19 Complete the given table Form of waterProcess by which formedLocation where found(a) Liquid (b) Solid (c) Gaseous

Answer»

Question 19

Complete the given table
$\begin{matrix} F o r m o f w a t e r & P r o c e s s b y w h i c h f o r m e d & L o c a t i o n w h e r e f o u n d (a) L i q u i d (b) S o l i d (c) G a s e o u s \end{matrix}$

Discussion

3957.	During rainfall, we see water vapur getting converted to water. This process is called ___
Answer» During rainfall, we see water vapur getting converted to water. This process is called ___

Discussion

3958.	Q4. Consider the following statements about Lithium: 1. It powers electric vehicles (EVs). 2. Lithium is used primarily in batteries, glass and ceramics, with other uses including rocket fuel and lasers. Which of the statements are correct?
Answer» Q4. Consider the following statements about Lithium: 1. It powers electric vehicles (EVs). 2. Lithium is used primarily in batteries, glass and ceramics, with other uses including rocket fuel and lasers. Which of the statements are correct?

3958.

Q4. Consider the following statements about Lithium: 1. It powers electric vehicles (EVs). 2. Lithium is used primarily in batteries, glass and ceramics, with other uses including rocket fuel and lasers. Which of the statements are correct?

Answer»

Q4. Consider the following statements about Lithium:

1. It powers electric vehicles (EVs).

2. Lithium is used primarily in batteries, glass and ceramics, with other uses including rocket fuel and lasers.

Which of the statements are correct?

Discussion

3959.	A reaction 2A+BK−→C+D is first order w.r.t. and second order w.r.t. . Initial conc. (t=0) of is C0 while is 2C0. If at as 300 minutes the conc. of C is C04 then rate expression at t = 300 minutes is
Answer» A reaction $2 A + B K - \to C + D$ is first order w.r.t. and second order w.r.t. . Initial conc. (t=0) of is $C_{0}$ while is $2 C_{0}$ . If at as 300 minutes the conc. of C is $\frac{C_{0}}{4}$ then rate expression at t = 300 minutes is

Discussion

3960.	Which of the following factors affect the soil of a particular place or region? (You can choose more than one option)
Answer» Which of the following factors affect the soil of a particular place or region? (You can choose more than one option)

Discussion

3961.	Why cannot we put water in acid?
Answer» Why cannot we put water in acid?

Discussion

3962.	Plants can be grown in
Answer» Plants can be grown in

3962.

Plants can be grown in

Answer»

Plants can be grown in

Discussion

3963.	A silver ware is kept in a solution of CuSO4(aq). What change will you expect? [2 MARKS]
Answer» A silver ware is kept in a solution of ${CuSO}_{4} (aq)$ . What change will you expect? [2 MARKS]

Discussion

3964.	Increase in the average temperature of Earth's climate is called ______________.
Answer» Increase in the average temperature of Earth's climate is called ______________.

Discussion

3965.	Impure black coloured solution of acetic acid is added to activated charcoal and heated for a while. Then the colour of acetic acid changes to its purest form, impurities are absorbed by activated charcoal. Which of the following characteristics of coal absorbs the impurity?
Answer» Impure black coloured solution of acetic acid is added to activated charcoal and heated for a while. Then the colour of acetic acid changes to its purest form, impurities are absorbed by activated charcoal. Which of the following characteristics of coal absorbs the impurity?

Discussion

3966.	To balance H in Cr2O72- (aq) → Cr3+ (aq) + 7H2O (in acidic medium), we will
Answer» To balance H in Cr₂O₇^2- _(aq) → Cr³⁺ _(aq) + 7H₂O (in acidic medium), we will

Discussion

3967.	The Edison storage cell is represented as : Fe(s)/FeO(s)/KOH(aq)/Ni2O3 (s)/Ni(s) The half-cell reactions are: Ni2O3(s)+H2O(l)+2e−→2NiO(s)+2OH−;E∘+0.40 FeO(s)+H2O(l)+2e−→Fe(s)+2OH−;E∘=−0.87, What is the maximum amount of electrical energy that can be obtained from one mole of Ni2O3 ?
Answer» The Edison storage cell is represented as : Fe(s)/FeO(s)/KOH(aq)/Ni₂O₃ (s)/Ni(s) The half-cell reactions are: $N i_{2} O_{3} (s) + H_{2} O (l) + 2 e^{-} \to 2 N i O (s) + 2 O H^{-}; E^{\circ} + 0.40$ $F e O (s) + H_{2} O (l) + 2 e^{-} \to F e (s) + 2 O H^{-}; E^{\circ} = - 0.87$ , What is the maximum amount of electrical energy that can be obtained from one mole of Ni₂O₃ ?

Discussion

3968.	Clotting of blood is an example of _____ change.
Answer» Clotting of blood is an example of _____ change.

Discussion

3969.	Differentiate between physical change and chemical change.
Answer» Differentiate between physical change and chemical change.

Discussion

3970.	Is litmus a natural indicator?
Answer» Is litmus a natural indicator?

Discussion

3971.	Which state of matter is clay?
Answer» Which state of matter is clay?

Discussion

3972.	How can we see our breath , when the climate is cold ?
Answer» How can we see our breath , when the climate is cold ?

Discussion

3973.	What is the term given to the device used for reducing gases or vapors to liquids or solid forms?
Answer» What is the term given to the device used for reducing gases or vapors to liquids or solid forms?

Discussion

3974.	Why does Rbizobium grows only on pulse plant
Answer» Why does Rbizobium grows only on pulse plant

Discussion

3975.	Identify the layer of soil which is not rich in humus but rich in minerals. ___ (Fill in the blank).
Answer» Identify the layer of soil which is not rich in humus but rich in minerals. ___ (Fill in the blank).

Discussion

3976.	The chemical formula of washing soda is
Answer» The chemical formula of washing soda is

Discussion

3977.	The space between particles of matter is called ___ space.
Answer» The space between particles of matter is called ___ space.

Discussion

3978.	During the evaporation of a liquid –
Answer» During the evaporation of a liquid –

Discussion

3979.	A mixture contains three different substances, X, Y and Z. They are of the same size, cubical in shape and yellow in colour. X particles are very heavy, insoluble, non-magnetic and contribute 50% of the mixture. Y particles are very light, insoluble, non-magnetic and contribute 40% of the mixture. And Z particles are iron pieces. Which of the following methods can separate X, Y and Z?
Answer» A mixture contains three different substances, X, Y and Z. They are of the same size, cubical in shape and yellow in colour. X particles are very heavy, insoluble, non-magnetic and contribute $50 %$ of the mixture. Y particles are very light, insoluble, non-magnetic and contribute $40 %$ of the mixture. And Z particles are iron pieces. Which of the following methods can separate X, Y and Z?

Discussion

3980.	The vertical columns of the periodic table are called
Answer» The vertical columns of the periodic table are called

Discussion

3981.	Which of the following processes contributes towards water vapour content in the atmosphere?
Answer» Which of the following processes contributes towards water vapour content in the atmosphere?

Discussion

3982.	Name of natural indicator ? chemical formula of Rust iron?
Answer» Name of natural indicator ? chemical formula of Rust iron?

Discussion

3983.	Form what type of health problems the workers suffered while working in wool industry (short answer )
Answer» Form what type of health problems the workers suffered while working in wool industry (short answer )

Discussion

3984.	Which of the following statement is incorrect? Statement 1: Changes are the differences in the state of affairs. Statement 2: Change can be grouped into reversible and irreversible change. Statement 3: Change that can't be undone is reversible change and change that can be undone is irreversible change. Statement 4: There are many ways in which change can be brought.
Answer» Which of the following statement is incorrect? Statement 1: Changes are the differences in the state of affairs. Statement 2: Change can be grouped into reversible and irreversible change. Statement 3: Change that can't be undone is reversible change and change that can be undone is irreversible change. Statement 4: There are many ways in which change can be brought.

3984.

Which of the following statement is incorrect? Statement 1: Changes are the differences in the state of affairs. Statement 2: Change can be grouped into reversible and irreversible change. Statement 3: Change that can't be undone is reversible change and change that can be undone is irreversible change. Statement 4: There are many ways in which change can be brought.

Answer»

Which of the following statement is incorrect?

Statement 1: Changes are the differences in the state of affairs.

Statement 2: Change can be grouped into reversible and irreversible change.

Statement 3: Change that can't be undone is reversible change and change that can be undone is irreversible change.

Statement 4: There are many ways in which change can be brought.

Discussion

3985.	Good Morning sir , my doubt is : What is the importance of acids , bases and salts in our daily life?
Answer» Good Morning sir , my doubt is : What is the importance of acids , bases and salts in our daily life?

3985.

Good Morning sir , my doubt is : What is the importance of acids , bases and salts in our daily life?

Answer»

Good Morning sir , my doubt is :

What is the importance of acids , bases and salts in our daily life?

Discussion

3986.	Question 6 Litmus, a natural dye is an extract of which of the following? (a) China rose (Gudhal) (b) Beetroot (c) Lichen (d) Blueberries (Jamun)
Answer» Question 6 Litmus, a natural dye is an extract of which of the following? (a) China rose (Gudhal) (b) Beetroot (c) Lichen (d) Blueberries (Jamun)

3986.

Question 6 Litmus, a natural dye is an extract of which of the following? (a) China rose (Gudhal) (b) Beetroot (c) Lichen (d) Blueberries (Jamun)

Answer»

Question 6

Litmus, a natural dye is an extract of which of the following?
(a) China rose (Gudhal)
(b) Beetroot
(c) Lichen
(d) Blueberries (Jamun)

Discussion

3987.	What is the use of sulfuric acid in our life?
Answer» What is the use of sulfuric acid in our life?

Discussion

3988.	From the following objects, list out the transparent, translucent and opaque bodies. OBJECTSTYPE OF MATERIAL1Plywood sheetaTransparent2Tracing paperbTranslucent3Glass sheetcOpaque
Answer» From the following objects, list out the transparent, translucent and opaque bodies. $\begin{matrix} O B J E C T S & T Y P E O F M A T E R I A L 1 & P l y w o o d s h e e t & a & T r a n s p a r e n t 2 & T r a c i n g p a p e r & b & T r a n s l u c e n t 3 & G l a s s s h e e t & c & O p a q u e \end{matrix}$

3988.

From the following objects, list out the transparent, translucent and opaque bodies. OBJECTSTYPE OF MATERIAL1Plywood sheetaTransparent2Tracing paperbTranslucent3Glass sheetcOpaque

Answer»

From the following objects, list out the transparent, translucent and opaque bodies.

$\begin{matrix} O B J E C T S & T Y P E O F M A T E R I A L 1 & P l y w o o d s h e e t & a & T r a n s p a r e n t 2 & T r a c i n g p a p e r & b & T r a n s l u c e n t 3 & G l a s s s h e e t & c & O p a q u e \end{matrix}$

Discussion

3989.	What is the term given to the act of " increasing the density of matter?"
Answer» What is the term given to the act of " increasing the density of matter?"

Discussion

3990.	Why does a base applied to your skin and relief from an ant bite?
Answer» Why does a base applied to your skin and relief from an ant bite?

Discussion

3991.	Suggest any 2 occupational hazard faced by the workers of silk industry?
Answer» Suggest any 2 occupational hazard faced by the workers of silk industry?

Discussion

3992.	Appu inquired about what would happen to the fleece once it is removed. The farmer explained the process had four more steps. Which of the following options gives the correct sequence of steps?
Answer» Appu inquired about what would happen to the fleece once it is removed. The farmer explained the process had four more steps. Which of the following options gives the correct sequence of steps?

Discussion

3993.	Which of the following is incorrect about neutralisation reaction?
Answer» Which of the following is incorrect about neutralisation reaction?

Discussion

3994.	A ___ electrolyte allows electricity to pass through but with some resistance.
Answer» A ___ electrolyte allows electricity to pass through but with some resistance.

Discussion

3995.	Write the steps for the formation of copper sulphate crystals? [5 MARKS]
Answer» Write the steps for the formation of copper sulphate crystals? [5 MARKS]

Discussion

3996.	A solution changes the colour of turmeric indicator from yellow to red. The solution is:
Answer» A solution changes the colour of turmeric indicator from yellow to red. The solution is:

Discussion

3997.	Which of the following element shows variable valency?
Answer» Which of the following element shows variable valency?

Discussion

3998.	The distance of closest approach when a 15.0 MeV proton approaches gold nucleus (Z = 79) is
Answer» The distance of closest approach when a 15.0 MeV proton approaches gold nucleus (Z = 79) is

Discussion

3999.	Red data book deals with
Answer» Red data book deals with

Discussion

4000.	Question 8 Paheli’s mother made a concentrated sugar syrup by dissolving sugar in hot water. On cooling, crystals of sugar got separated. This indicates a: (a) physical change that can be reversed (b) chemical change that can be reversed (c) physical change that cannot be reversed (d) chemical change that cannot be reversed
Answer» Question 8 Paheli’s mother made a concentrated sugar syrup by dissolving sugar in hot water. On cooling, crystals of sugar got separated. This indicates a: (a) physical change that can be reversed (b) chemical change that can be reversed (c) physical change that cannot be reversed (d) chemical change that cannot be reversed

4000.

Question 8 Paheli’s mother made a concentrated sugar syrup by dissolving sugar in hot water. On cooling, crystals of sugar got separated. This indicates a: (a) physical change that can be reversed (b) chemical change that can be reversed (c) physical change that cannot be reversed (d) chemical change that cannot be reversed

Answer»

Question 8

Paheli’s mother made a concentrated sugar syrup by dissolving sugar in hot water. On cooling, crystals of sugar got separated. This indicates a:
(a) physical change that can be reversed
(b) chemical change that can be reversed
(c) physical change that cannot be reversed
(d) chemical change that cannot be reversed

Discussion

Explore topic-wise InterviewSolutions in .

Which of the following statement is true?

What is the term used for when the seed coat softens and results in absorption of moisture?

CNG is preferred over petrol as a fuel for transport vehicles. Which of these options justifies the statement?

State your observation with chemical equation : Aqueous solution of ferrous sulphate is treated with sodium hydroxide

Question 19 Complete the given table Form of waterProcess by which formedLocation where found(a) Liquid (b) Solid (c) Gaseous

During rainfall, we see water vapur getting converted to water. This process is called ___

Q4. Consider the following statements about Lithium: 1. It powers electric vehicles (EVs). 2. Lithium is used primarily in batteries, glass and ceramics, with other uses including rocket fuel and lasers. Which of the statements are correct?

A reaction 2A+BK−→C+D is first order w.r.t. and second order w.r.t. . Initial conc. (t=0) of is C0 while is 2C0. If at as 300 minutes the conc. of C is C04 then rate expression at t = 300 minutes is

Which of the following factors affect the soil of a particular place or region? (You can choose more than one option)

Why cannot we put water in acid?

Plants can be grown in

A silver ware is kept in a solution of CuSO4(aq). What change will you expect? [2 MARKS]

Increase in the average temperature of Earth's climate is called ______________.

Impure black coloured solution of acetic acid is added to activated charcoal and heated for a while. Then the colour of acetic acid changes to its purest form, impurities are absorbed by activated charcoal. Which of the following characteristics of coal absorbs the impurity?

To balance H in Cr2O72- (aq) → Cr3+ (aq) + 7H2O (in acidic medium), we will

Clotting of blood is an example of _____ change.

Differentiate between physical change and chemical change.

Is litmus a natural indicator?

Which state of matter is clay?

How can we see our breath , when the climate is cold ?

What is the term given to the device used for reducing gases or vapors to liquids or solid forms?

Why does Rbizobium grows only on pulse plant

Identify the layer of soil which is not rich in humus but rich in minerals. ___ (Fill in the blank).

The chemical formula of washing soda is

The space between particles of matter is called ___ space.

During the evaporation of a liquid –

The vertical columns of the periodic table are called

Which of the following processes contributes towards water vapour content in the atmosphere?

Name of natural indicator ? chemical formula of Rust iron?

Form what type of health problems the workers suffered while working in wool industry (short answer )

Good Morning sir , my doubt is : What is the importance of acids , bases and salts in our daily life?

Question 6 Litmus, a natural dye is an extract of which of the following? (a) China rose (Gudhal) (b) Beetroot (c) Lichen (d) Blueberries (Jamun)

What is the use of sulfuric acid in our life?

From the following objects, list out the transparent, translucent and opaque bodies. OBJECTSTYPE OF MATERIAL1Plywood sheetaTransparent2Tracing paperbTranslucent3Glass sheetcOpaque

What is the term given to the act of " increasing the density of matter?"

Why does a base applied to your skin and relief from an ant bite?

Suggest any 2 occupational hazard faced by the workers of silk industry?

Appu inquired about what would happen to the fleece once it is removed. The farmer explained the process had four more steps. Which of the following options gives the correct sequence of steps?

Which of the following is incorrect about neutralisation reaction?

A ___ electrolyte allows electricity to pass through but with some resistance.

Write the steps for the formation of copper sulphate crystals? [5 MARKS]

A solution changes the colour of turmeric indicator from yellow to red. The solution is:

Which of the following element shows variable valency?

The distance of closest approach when a 15.0 MeV proton approaches gold nucleus (Z = 79) is

Red data book deals with