5083 + Interview Questions in Chemistry Page 82 InterviewSolution

4051.	Does iron rust get attracted towards magnet and why?
Answer» Does iron rust get attracted towards magnet and why?

Discussion

4052.	Is it right to wear clothes made out of silk fabric ? What does your conscience say about this ? (2m)
Answer» Is it right to wear clothes made out of silk fabric ? What does your conscience say about this ? (2m)

Discussion

4053.	Ram and Rahul bought a packet of candies. The packet contains candies of different colours. Rahul is fine with any colour but Ram wants only red colour candies. Which method should Ram use in order to pick red colour candies?
Answer» Ram and Rahul bought a packet of candies. The packet contains candies of different colours. Rahul is fine with any colour but Ram wants only red colour candies. Which method should Ram use in order to pick red colour candies?

Discussion

4054.	___ is the property of solid, liquid, or gaseous chemical substances called solute by virtue of which they dissolve in a solid, liquid, or gaseous solvent.
Answer» ___ is the property of solid, liquid, or gaseous chemical substances called solute by virtue of which they dissolve in a solid, liquid, or gaseous solvent.

Discussion

4055.	Which of the following are Biodegradable wastes?
Answer» Which of the following are Biodegradable wastes?

Discussion

4056.	The time required to 100% completion of zero order reaction is (a is initial concentration and K is rate constant)
Answer» The time required to $100 %$ completion of zero order reaction is (a is initial concentration and K is rate constant)

Discussion

4057.	The groundwater stored between the layers of hard rock below the water table is known as:
Answer» The groundwater stored between the layers of hard rock below the water table is known as:

Discussion

4058.	Why are acids dangerous?
Answer» Why are acids dangerous?

Discussion

4059.	Which of the following covalent compounds become electrovalent when dissolved in water?
Answer» Which of the following covalent compounds become electrovalent when dissolved in water?

Discussion

4060.	117+97= ?
Answer» $\frac{11}{7} + \frac{9}{7} = ?$

Discussion

4061.	To make wool from the sheep, the fleece have to be extracted from the sheep. This process is called ___ .
Answer» To make wool from the sheep, the fleece have to be extracted from the sheep. This process is called ___ .

Discussion

4062.	What is the content of water in a water vapour ?
Answer» What is the content of water in a water vapour ?

Discussion

4063.	Can't we just use the cocoons without killing the larvel?
Answer» Can't we just use the cocoons without killing the larvel?

Discussion

4064.	What can be our role as active citizens in relation to sanitation? [5 MARKS]
Answer» What can be our role as active citizens in relation to sanitation? [5 MARKS]

Discussion

4065.	I am waterproof and have a fibrous husk. What is my dispersal method? ___
Answer» I am waterproof and have a fibrous husk. What is my dispersal method? ___

Discussion

4066.	Scrubbers are used to remove _________ pollutants
Answer» Scrubbers are used to remove _________ pollutants

Discussion

4067.	Acid radicals have a negative charge and are also called ___.
Answer» Acid radicals have a negative charge and are also called ___.

Discussion

4068.	Energy is ________ when an electron jumps from higher energy level to lower energy level.
Answer» Energy is ________ when an electron jumps from higher energy level to lower energy level.

Discussion

4069.	Which metal is used for making foils used in packing of food materials?
Answer» Which metal is used for making foils used in packing of food materials?

Discussion

4070.	Which of the following is not a property of base?
Answer» Which of the following is not a property of base?

Discussion

4071.	How can wastewater generation be minimized at home? [3 MARKS]
Answer» How can wastewater generation be minimized at home? [3 MARKS]

Discussion

4072.	Aq. solution of sodium cyanide is
Answer» Aq. solution of sodium cyanide is

Discussion

4073.	Buckminster fullerene is an allotropic form of ________.
Answer» Buckminster fullerene is an allotropic form of ________.

Discussion

4074.	Sodium hydroxide is a/an__________.
Answer» Sodium hydroxide is a/an__________.

Discussion

4075.	The bar screen machine in the wastewater treatment plant at Itarsi Madhya Pradesh suffered a mechanical breakdown. State how would it impact the process of cleansing the wastewater and affect the people of Itarsi. [3 MARKS]
Answer» The bar screen machine in the wastewater treatment plant at Itarsi Madhya Pradesh suffered a mechanical breakdown. State how would it impact the process of cleansing the wastewater and affect the people of Itarsi. [3 MARKS]

Discussion

4076.	Angora wool is obtained from
Answer» Angora wool is obtained from

Discussion

4077.	Mercury is found in the ___ state at room temperature.
Answer» Mercury is found in the ___ state at room temperature.

Discussion

4078.	Smog is the air pollutant which
Answer» Smog is the air pollutant which

Discussion

4079.	What is the difference between symbol and formula?
Answer» What is the difference between symbol and formula?

Discussion

4080.	Which are the properties of oxygen that help in detecting oxygen
Answer» Which are the properties of oxygen that help in detecting oxygen

Discussion

4081.	A solution containing 1 mol per litre of each Cu(NO3)2,AgNO3, and Hg2(NO3)2 is being electrolyzed by using inert electrodes. The values of standard electrode potentials in volts (reduction potential) are Ag\|Ag⨁=+0.80,2Hg\|Hg2+2=+0.79 Cu\|Cu2+=+0.34,Mg\|Mg2+=−2.37 with increasing voltage, the sequence of deposition of metals at the cathode will be (IIT-JEE, 1984)
Answer» A solution containing 1 mol per litre of each $C u (N O_{3})_{2}, A g N O_{3},$ and $H g_{2} (N O_{3})_{2}$ is being electrolyzed by using inert electrodes. The values of standard electrode potentials in volts (reduction potential) are $A g \| A g^{⨁} = + 0.80, 2 H g \| H g_{2}^{2 +} = + 0.79$ $C u \| C u^{2 +} = + 0.34, M g \| M g^{2 +} = - 2.37$ with increasing voltage, the sequence of deposition of metals at the cathode will be (IIT-JEE, 1984)

Discussion

4082.	Why top soil has most of humus ?
Answer» Why top soil has most of humus ?

Discussion

4083.	The caterpillars feed on mulberry leaves for approximately what time?
Answer» The caterpillars feed on mulberry leaves for approximately what time?

Discussion

4084.	State whether the following statements are true or false. If false, give the correct statement. [3 MARKS] (a) Forests influence climate, water cycle and air quality. (b) In a forest, trees form the uppermost layer, followed by herbs. The shrubs form the lowest layer of vegetation. (c) The forest keeps on growing and changing and can regenerate.
Answer» State whether the following statements are true or false. If false, give the correct statement. [3 MARKS] (a) Forests influence climate, water cycle and air quality. (b) In a forest, trees form the uppermost layer, followed by herbs. The shrubs form the lowest layer of vegetation. (c) The forest keeps on growing and changing and can regenerate.

Discussion

4085.	Steel is an alloy made of iron and carbon combined in different proportions .why do you need an alloy of iron
Answer» Steel is an alloy made of iron and carbon combined in different proportions .why do you need an alloy of iron

Discussion

4086.	Give reason why a crystal of iodine on slow heating in a closed flask, turns into vapour and fills the complete flask.
Answer» Give reason why a crystal of iodine on slow heating in a closed flask, turns into vapour and fills the complete flask.

Discussion

4087.	H2(g)+V2O5(s)→V2O3(s)+H2O(l) Let the coefficients for the given reaction be as follows: AH2(g)+BV2O5(s)→CV2O3(s)+DH2O(l) What will be the equations for the number of atoms each element, so that each is balanced?
Answer» $H_{2} (g) + V_{2} O_{5} (s) \to V_{2} O_{3} (s) + H_{2} O (l)$ Let the coefficients for the given reaction be as follows: $A H_{2} (g) + B V_{2} O_{5} (s) \to C V_{2} O_{3} (s) + D H_{2} O (l)$ What will be the equations for the number of atoms each element, so that each is balanced?

Discussion

4088.	Which kind of cement was used in construction during ancient times?
Answer» Which kind of cement was used in construction during ancient times?

Discussion

4089.	splitting of single reactant into two or more simpler products is called --------------
Answer» splitting of single reactant into two or more simpler products is called --------------

Discussion

4090.	Conversion of CaCO3 to CaO gives how many products?
Answer» Conversion of CaCO3 to CaO gives how many products?

Discussion

4091.	Complete the following reaction as balanced chemical equations:1.Na+H2O=? 2.K+H2O=? 3.Ca+H2o?
Answer» Complete the following reaction as balanced chemical equations:1.Na+H2O=? 2.K+H2O=? 3.Ca+H2o?

Discussion

4092.	Match the following: 1AlkaliAStrong base2NaOHBWeak base3NH4OHCBase soluble in water
Answer» Match the following: $\begin{matrix} 1 & A l k a l i & A & S t r o n g b a s e 2 & N a O H & B & W e a k b a s e 3 & N H_{4} O H & C & B a s e s o l u b l e i n w a t e r \end{matrix}$

4092.

Match the following: 1AlkaliAStrong base2NaOHBWeak base3NH4OHCBase soluble in water

Answer»

Match the following:

$\begin{matrix} 1 & A l k a l i & A & S t r o n g b a s e 2 & N a O H & B & W e a k b a s e 3 & N H_{4} O H & C & B a s e s o l u b l e i n w a t e r \end{matrix}$

Discussion

4093.	Which of following metals do not react with normal acids?
Answer» Which of following metals do not react with normal acids?

Discussion

4094.	Describe an experiment which shows that air is dissolved in water. Make a diagram depicting the process. [5 MARKS]
Answer» Describe an experiment which shows that air is dissolved in water. Make a diagram depicting the process. [5 MARKS]

Discussion

4095.	How do silk 🐛spin cocoons to make silk
Answer» How do silk 🐛spin cocoons to make silk

Discussion

4096.	Question 5 (e) Solution in brief. What is Red Data Book?
Answer» Question 5 (e) Solution in brief. What is Red Data Book?

Discussion

4097.	Which of the following alloy is used in making household utensils?
Answer» Which of the following alloy is used in making household utensils?

Discussion

4098.	What is the most important role of fruits?
Answer» What is the most important role of fruits?

Discussion

4099.	The colour was given to the wool after carding, by dipping the wool in a pigment.What is this process called?
Answer» The colour was given to the wool after carding, by dipping the wool in a pigment.What is this process called?

Discussion

4100.	Law of multiple proportions is given by:
Answer» Law of multiple proportions is given by:

Discussion

Explore topic-wise InterviewSolutions in .

Does iron rust get attracted towards magnet and why?

Is it right to wear clothes made out of silk fabric ? What does your conscience say about this ? (2m)

Ram and Rahul bought a packet of candies. The packet contains candies of different colours. Rahul is fine with any colour but Ram wants only red colour candies. Which method should Ram use in order to pick red colour candies?

___ is the property of solid, liquid, or gaseous chemical substances called solute by virtue of which they dissolve in a solid, liquid, or gaseous solvent.

Which of the following are Biodegradable wastes?

The time required to 100% completion of zero order reaction is (a is initial concentration and K is rate constant)

The groundwater stored between the layers of hard rock below the water table is known as:

Why are acids dangerous?

Which of the following covalent compounds become electrovalent when dissolved in water?

117+97= ?

To make wool from the sheep, the fleece have to be extracted from the sheep. This process is called ___ .

What is the content of water in a water vapour ?

Can't we just use the cocoons without killing the larvel?

What can be our role as active citizens in relation to sanitation? [5 MARKS]

I am waterproof and have a fibrous husk. What is my dispersal method? ___

Scrubbers are used to remove _________ pollutants

Acid radicals have a negative charge and are also called ___.

Energy is ________ when an electron jumps from higher energy level to lower energy level.

Which metal is used for making foils used in packing of food materials?

Which of the following is not a property of base?

How can wastewater generation be minimized at home? [3 MARKS]

Aq. solution of sodium cyanide is

Buckminster fullerene is an allotropic form of ________.

Sodium hydroxide is a/an__________.

The bar screen machine in the wastewater treatment plant at Itarsi Madhya Pradesh suffered a mechanical breakdown. State how would it impact the process of cleansing the wastewater and affect the people of Itarsi. [3 MARKS]

Angora wool is obtained from

Mercury is found in the ___ state at room temperature.

Smog is the air pollutant which

What is the difference between symbol and formula?

Which are the properties of oxygen that help in detecting oxygen

Why top soil has most of humus ?

The caterpillars feed on mulberry leaves for approximately what time?

Steel is an alloy made of iron and carbon combined in different proportions .why do you need an alloy of iron

Give reason why a crystal of iodine on slow heating in a closed flask, turns into vapour and fills the complete flask.

H2(g)+V2O5(s)→V2O3(s)+H2O(l) Let the coefficients for the given reaction be as follows: AH2(g)+BV2O5(s)→CV2O3(s)+DH2O(l) What will be the equations for the number of atoms each element, so that each is balanced?

Which kind of cement was used in construction during ancient times?

splitting of single reactant into two or more simpler products is called --------------

Conversion of CaCO3 to CaO gives how many products?

Complete the following reaction as balanced chemical equations:1.Na+H2O=? 2.K+H2O=? 3.Ca+H2o?

Match the following: 1AlkaliAStrong base2NaOHBWeak base3NH4OHCBase soluble in water

Which of following metals do not react with normal acids?

Describe an experiment which shows that air is dissolved in water. Make a diagram depicting the process. [5 MARKS]

How do silk 🐛spin cocoons to make silk

Question 5 (e) Solution in brief. What is Red Data Book?

Which of the following alloy is used in making household utensils?

What is the most important role of fruits?

The colour was given to the wool after carding, by dipping the wool in a pigment.What is this process called?

Law of multiple proportions is given by: