7248 + Interview Questions in Chemistry Page 128 InterviewSolution

6351.	Question 9 The following Table shows the total power shortage in India from 1991 - 1997. Show the data in the form of a graph. Plot shortage percentage for the years on the Y-axis and the year on the X-axis. S.No.YearShortage(%)119917.9219927.8319938.3419947.4519957.1619969.27199711.5
Answer» Question 9 The following Table shows the total power shortage in India from 1991 - 1997. Show the data in the form of a graph. Plot shortage percentage for the years on the Y-axis and the year on the X-axis. $\begin{matrix} S . N o . & Y e a r & S h o r t a g e (%) 1 & 1991 & 7.9 2 & 1992 & 7.8 3 & 1993 & 8.3 4 & 1994 & 7.4 5 & 1995 & 7.1 6 & 1996 & 9.2 7 & 1997 & 11.5 \end{matrix}$

Discussion

6352.	Number of moles of solute dissloved per dm3 of solution is-
Answer» Number of moles of solute dissloved per dm³ of solution is-

Discussion

6353.	What are the types of the underlined clauses in the sentence? The house gleaming strangely in the moonlight was abandoned by its owners because they suspected it was haunted.
Answer» What are the types of the underlined clauses in the sentence? The house gleaming strangely in the moonlight was abandoned by its owners because they suspected it was haunted.

6353.

What are the types of the underlined clauses in the sentence? The house gleaming strangely in the moonlight was abandoned by its owners because they suspected it was haunted.

Answer»

What are the types of the underlined clauses in the sentence?

The house gleaming strangely in the moonlight was abandoned by its owners because they suspected it was haunted.

Discussion

6354.	The total number of chlorine atoms present in ferric chloride molecule, FeCl3:
Answer» The total number of chlorine atoms present in ferric chloride molecule, $F e C l_{3}$ :

Discussion

6355.	What product is formed when sulphur is burnt in air?
Answer» What product is formed when sulphur is burnt in air?

Discussion

6356.	A magnesium strip is burnt. The ash so obtained is dissolved in water. What is the nature of ash obtained from burning magnesium ribbon?
Answer» A magnesium strip is burnt. The ash so obtained is dissolved in water. What is the nature of ash obtained from burning magnesium ribbon?

6356.

A magnesium strip is burnt. The ash so obtained is dissolved in water. What is the nature of ash obtained from burning magnesium ribbon?

Answer»

A magnesium strip is burnt. The ash so obtained is dissolved in water. What is the nature of ash obtained from burning magnesium ribbon?

Discussion

6357.	Plastics that can be heated and reshaped are known as:
Answer» Plastics that can be heated and reshaped are known as:

Discussion

6358.	Select the appropriate demonstrative pronouns for the blanks. ______ smells very pungent. (near) ______ has a better view. (far)
Answer» Select the appropriate demonstrative pronouns for the blanks. ______ smells very pungent. (near) ______ has a better view. (far)

6358.

Select the appropriate demonstrative pronouns for the blanks. smells very pungent. (near) has a better view. (far)

Answer»

Select the appropriate demonstrative pronouns for the blanks.

______ smells very pungent. (near)

______ has a better view. (far)

Discussion

6359.	Solids can exist as
Answer» Solids can exist as

Discussion

6360.	Biogas consists mainly of:
Answer» Biogas consists mainly of:

Discussion

6361.	The rate of combustion for an ideal fuel should be:
Answer» The rate of combustion for an ideal fuel should be:

Discussion

6362.	The gravitational potential energy of a box of weight 150 KGF is 1.5×104J. find the height of the box if 1 KGF is equal to 10 Newton.
Answer» The gravitational potential energy of a box of weight 150 KGF is 1.5×10⁴J. find the height of the box if 1 KGF is equal to 10 Newton.

Discussion

6363.	Some properties are listed in the following table. Distinguish between metal and non metals based on these properties 1. Appearance 2. Hardness 3. Malleablity 4. Ductility 5. Heat conduction 6. Condition of electricity
Answer» Some properties are listed in the following table. Distinguish between metal and non metals based on these properties 1. Appearance 2. Hardness 3. Malleablity 4. Ductility 5. Heat conduction 6. Condition of electricity

6363.

Some properties are listed in the following table. Distinguish between metal and non metals based on these properties 1. Appearance 2. Hardness 3. Malleablity 4. Ductility 5. Heat conduction 6. Condition of electricity

Answer»

Some properties are listed in the following table. Distinguish between metal and non metals based on these properties

1. Appearance

2. Hardness

3. Malleablity

4. Ductility

5. Heat conduction

6. Condition of electricity

Discussion

6364.	In my book it's written that silver nitrate and hydrogen peroxide are kept in brown bottles because they would decompose in the presence of light. Then what is their use and how do we use it in the open
Answer» In my book it's written that silver nitrate and hydrogen peroxide are kept in brown bottles because they would decompose in the presence of light. Then what is their use and how do we use it in the open

Discussion

6365.	Towards the end of 19th century, scientists were successful in obtaining a fibre having properties similar to that of silk and it is known as artificial silk. Identify it from the below options?
Answer» Towards the end of 19th century, scientists were successful in obtaining a fibre having properties similar to that of silk and it is known as artificial silk. Identify it from the below options?

Discussion

6366.	What are the major products (or fractions) of petroleum refining ? Give one use of each petroleum product.
Answer» What are the major products (or fractions) of petroleum refining ? Give one use of each petroleum product.

Discussion

6367.	Which metal does not react with water or steam:-
Answer» Which metal does not react with water or steam:-

Discussion

6368.	Which of the following statement is incorrect about the crystalline and amorphous solids?
Answer» Which of the following statement is incorrect about the crystalline and amorphous solids?

Discussion

6369.	(a) Equal volumes of hydrogen and chlorine are exposed to diffused sunlight to prepare (i) hydrogen chloride (ii) water (iii) sodium hydroxide (iv) hydrochloric acid (b) The metal which reacts with cold water to produce hydrogen is (i) magnesium (ii) aluminium (iii) calcium (iv) iron (c) In metal reactivity series the more reactive metals are at (i) top (ii) bottom (iii) middle (iv) none (d) Hydrogen is responsible for producing (i) heat and light (ii) hydrogenated oil (iii) fertilizers (iv) all of the above (e) Hydrogen is (i) combustible (ii) non-combustible (iii) supporter of combustion (iv) neither supporter nor combustible (f) Water gas is a mixture of (i) carbon monoxide and oxygen (ii) carbon monoxide and hydrogen (iii) hydrogen and oxygen (iv) hydrogen and nitrogen
Answer» (a) Equal volumes of hydrogen and chlorine are exposed to diffused sunlight to prepare (i) hydrogen chloride (ii) water (iii) sodium hydroxide (iv) hydrochloric acid (b) The metal which reacts with cold water to produce hydrogen is (i) magnesium (ii) aluminium (iii) calcium (iv) iron (c) In metal reactivity series the more reactive metals are at (i) top (ii) bottom (iii) middle (iv) none (d) Hydrogen is responsible for producing (i) heat and light (ii) hydrogenated oil (iii) fertilizers (iv) all of the above (e) Hydrogen is (i) combustible (ii) non-combustible (iii) supporter of combustion (iv) neither supporter nor combustible (f) Water gas is a mixture of (i) carbon monoxide and oxygen (ii) carbon monoxide and hydrogen (iii) hydrogen and oxygen (iv) hydrogen and nitrogen

6369.

(a) Equal volumes of hydrogen and chlorine are exposed to diffused sunlight to prepare (i) hydrogen chloride (ii) water (iii) sodium hydroxide (iv) hydrochloric acid (b) The metal which reacts with cold water to produce hydrogen is (i) magnesium (ii) aluminium (iii) calcium (iv) iron (c) In metal reactivity series the more reactive metals are at (i) top (ii) bottom (iii) middle (iv) none (d) Hydrogen is responsible for producing (i) heat and light (ii) hydrogenated oil (iii) fertilizers (iv) all of the above (e) Hydrogen is (i) combustible (ii) non-combustible (iii) supporter of combustion (iv) neither supporter nor combustible (f) Water gas is a mixture of (i) carbon monoxide and oxygen (ii) carbon monoxide and hydrogen (iii) hydrogen and oxygen (iv) hydrogen and nitrogen

Answer»

(a) Equal volumes of hydrogen and chlorine are exposed to diffused sunlight to prepare

(i) hydrogen chloride

(ii) water

(iii) sodium hydroxide

(iv) hydrochloric acid

(b) The metal which reacts with cold water to produce hydrogen is

(i) magnesium

(ii) aluminium

(iii) calcium

(iv) iron

(c) In metal reactivity series the more reactive metals are at

(i) top

(ii) bottom

(iii) middle

(iv) none

(d) Hydrogen is responsible for producing

(i) heat and light

(ii) hydrogenated oil

(iii) fertilizers

(iv) all of the above

(e) Hydrogen is

(i) combustible

(ii) non-combustible

(iii) supporter of combustion

(iv) neither supporter nor combustible

(f) Water gas is a mixture of

(i) carbon monoxide and oxygen

(ii) carbon monoxide and hydrogen

(iii) hydrogen and oxygen

(iv) hydrogen and nitrogen

Discussion

6370.	The high specific heat of water is mainly due to ________ and __________.
Answer» The high specific heat of water is mainly due to ________ and __________.

Discussion

6371.	What is the path taken by the electron during its trajectory around the nucleus called?
Answer» What is the path taken by the electron during its trajectory around the nucleus called?

Discussion

6372.	What will happen when magnesium ribbon burns
Answer» What will happen when magnesium ribbon burns

Discussion

6373.	Element X reacts readily with the oxygen of the air to give a compound Y which dissolves in water. The aqueous solution of Y changes blue litmus solution to red. The element X is :
Answer» Element X reacts readily with the oxygen of the air to give a compound Y which dissolves in water. The aqueous solution of Y changes blue litmus solution to red. The element X is :

Discussion

6374.	Which is the smallest thing ?
Answer» Which is the smallest thing ?

Discussion

6375.	Nowadays silver ware blackens faster than it did during our grandparents time what do you think could be the reason
Answer» Nowadays silver ware blackens faster than it did during our grandparents time what do you think could be the reason

Discussion

6376.	Why petrol is used for light vehicle, and diesel for heavy vehicle
Answer» Why petrol is used for light vehicle, and diesel for heavy vehicle

Discussion

6377.	Which of the following is/are NOT a heterogeneous mixture?
Answer» Which of the following is/are NOT a heterogeneous mixture?

Discussion

6378.	What is the deciding factor for single displacement reaction?
Answer» What is the deciding factor for single displacement reaction?

Discussion

6379.	________ are substances which produce a large amount of energy when burnt.
Answer» ________ are substances which produce a large amount of energy when burnt.

Discussion

6380.	Is it true that metals are not monoatomic?Please give a detailed explanation.
Answer» Is it true that metals are not monoatomic?Please give a detailed explanation.

Discussion

6381.	Among the options given below, which of the following exhibit tyndall effect? (i) Sunlight passing through clouds (ii) Milk in a glass (iii) Sunlight coming in through windows
Answer» Among the options given below, which of the following exhibit tyndall effect? (i) Sunlight passing through clouds (ii) Milk in a glass (iii) Sunlight coming in through windows

Discussion

6382.	Explain how, carbon dioxide is able to control fires.
Answer» Explain how, carbon dioxide is able to control fires.

Discussion

6383.	KNO3(s) + H2O(l) + Δ → KNO3(aq) The above reaction is _______ reaction.
Answer» KNO_3(s)+ H₂O_(l)+ Δ → KNO_3(aq) The above reaction is _______ reaction.

6383.

KNO3(s) + H2O(l) + Δ → KNO3(aq) The above reaction is _______ reaction.

Answer»

KNO_3(s)+ H₂O_(l)+ Δ → KNO_3(aq)

The above reaction is _______ reaction.

Discussion

6384.	The 'Ganga Action Plan' was launched in year
Answer» The 'Ganga Action Plan' was launched in year

Discussion

6385.	What does this reaction suggest? MgSO4 + Cu →CuSO4 + Mg
Answer» What does this reaction suggest? MgSO₄ + Cu →CuSO₄ + Mg

6385.

What does this reaction suggest? MgSO4 + Cu →CuSO4 + Mg

Answer»

What does this reaction suggest?
MgSO₄ + Cu →CuSO₄ + Mg

Discussion

6386.	During a race, you are moving on a leveled track and acquire a speed 3 times the initial speed. What was the change in your potential energy?
Answer» During a race, you are moving on a leveled track and acquire a speed $3$ times the initial speed. What was the change in your potential energy?

Discussion

6387.	Sodium metal is kept immersed in kerosene and not water because:
Answer» Sodium metal is kept immersed in kerosene and not water because:

6387.

Sodium metal is kept immersed in kerosene and not water because:

Answer»

Sodium metal is kept immersed in kerosene and not water because:

Discussion

6388.	Which of the following metals float in water when it is reacted with cold water?
Answer» Which of the following metals float in water when it is reacted with cold water?

Discussion

6389.	Which of the following are examples of chemical reactions? i. Burning of wood ii. Cutting of wood iii. Conversion of steam to water iv. Rusting of almirah v. Dissolving common salt in water
Answer» Which of the following are examples of chemical reactions? i. Burning of wood ii. Cutting of wood iii. Conversion of steam to water iv. Rusting of almirah v. Dissolving common salt in water

6389.

Which of the following are examples of chemical reactions? i. Burning of wood ii. Cutting of wood iii. Conversion of steam to water iv. Rusting of almirah v. Dissolving common salt in water

Answer»

Which of the following are examples of chemical reactions?

i. Burning of wood

ii. Cutting of wood

iii. Conversion of steam to water

iv. Rusting of almirah

v. Dissolving common salt in water

Discussion

6390.	Which among the following is a native metal?
Answer» Which among the following is a native metal?

Discussion

6391.	How will you prove the nature of non metal (sulphur) oxides ? [5 MARKS]
Answer» How will you prove the nature of non metal (sulphur) oxides ? [5 MARKS]

Discussion

6392.	Which of the following can not be used for purification of water?
Answer» Which of the following can not be used for purification of water?

Discussion

6393.	What is Pig Iron. How is it made? [3 MARKS]
Answer» What is Pig Iron. How is it made? [3 MARKS]

Discussion

6394.	What are the characteristics of a good source of energy? [5 MARKS]
Answer» What are the characteristics of a good source of energy? [5 MARKS]

Discussion

6395.	___ is the most abundant element in the universe.
Answer» ___ is the most abundant element in the universe.

Discussion

6396.	___ allotrope of carbon is used in making high-precision cutting devices for use in the therapeutic field.
Answer» ___ allotrope of carbon is used in making high-precision cutting devices for use in the therapeutic field.

Discussion

6397.	How can floods be prevented?
Answer» How can floods be prevented?

Discussion

6398.	Which of the following diseases is caused by the suspended particles in the earth's atmosphere, released by combustion of coal?
Answer» Which of the following diseases is caused by the suspended particles in the earth's atmosphere, released by combustion of coal?

Discussion

6399.	Which of the following is/are the reason/s for the reactivity of elements?
Answer» Which of the following is/are the reason/s for the reactivity of elements?

Discussion

6400.	Identify X in the following reaction X + Water → Base.
Answer» Identify X in the following reaction X + Water $\to$ Base.

Discussion

Explore topic-wise InterviewSolutions in .

Question 9 The following Table shows the total power shortage in India from 1991 - 1997. Show the data in the form of a graph. Plot shortage percentage for the years on the Y-axis and the year on the X-axis. S.No.YearShortage(%)119917.9219927.8319938.3419947.4519957.1619969.27199711.5

Number of moles of solute dissloved per dm3 of solution is-

What are the types of the underlined clauses in the sentence? The house gleaming strangely in the moonlight was abandoned by its owners because they suspected it was haunted.

The total number of chlorine atoms present in ferric chloride molecule, FeCl3:

What product is formed when sulphur is burnt in air?

A magnesium strip is burnt. The ash so obtained is dissolved in water. What is the nature of ash obtained from burning magnesium ribbon?

Plastics that can be heated and reshaped are known as:

Select the appropriate demonstrative pronouns for the blanks. ______ smells very pungent. (near) ______ has a better view. (far)

Solids can exist as

Biogas consists mainly of:

The rate of combustion for an ideal fuel should be:

The gravitational potential energy of a box of weight 150 KGF is 1.5×104J. find the height of the box if 1 KGF is equal to 10 Newton.

Some properties are listed in the following table. Distinguish between metal and non metals based on these properties 1. Appearance 2. Hardness 3. Malleablity 4. Ductility 5. Heat conduction 6. Condition of electricity

In my book it's written that silver nitrate and hydrogen peroxide are kept in brown bottles because they would decompose in the presence of light. Then what is their use and how do we use it in the open

Towards the end of 19th century, scientists were successful in obtaining a fibre having properties similar to that of silk and it is known as artificial silk. Identify it from the below options?

What are the major products (or fractions) of petroleum refining ? Give one use of each petroleum product.

Which metal does not react with water or steam:-

Which of the following statement is incorrect about the crystalline and amorphous solids?

The high specific heat of water is mainly due to ________ and __________.

What is the path taken by the electron during its trajectory around the nucleus called?

What will happen when magnesium ribbon burns

Element X reacts readily with the oxygen of the air to give a compound Y which dissolves in water. The aqueous solution of Y changes blue litmus solution to red. The element X is :

Which is the smallest thing ?

Nowadays silver ware blackens faster than it did during our grandparents time what do you think could be the reason

Why petrol is used for light vehicle, and diesel for heavy vehicle

Which of the following is/are NOT a heterogeneous mixture?

What is the deciding factor for single displacement reaction?

________ are substances which produce a large amount of energy when burnt.

Is it true that metals are not monoatomic?Please give a detailed explanation.

Among the options given below, which of the following exhibit tyndall effect? (i) Sunlight passing through clouds (ii) Milk in a glass (iii) Sunlight coming in through windows

Explain how, carbon dioxide is able to control fires.

KNO3(s) + H2O(l) + Δ → KNO3(aq) The above reaction is _______ reaction.

The 'Ganga Action Plan' was launched in year

What does this reaction suggest? MgSO4 + Cu →CuSO4 + Mg

During a race, you are moving on a leveled track and acquire a speed 3 times the initial speed. What was the change in your potential energy?

Sodium metal is kept immersed in kerosene and not water because:

Which of the following metals float in water when it is reacted with cold water?

Which of the following are examples of chemical reactions? i. Burning of wood ii. Cutting of wood iii. Conversion of steam to water iv. Rusting of almirah v. Dissolving common salt in water

Which among the following is a native metal?

How will you prove the nature of non metal (sulphur) oxides ? [5 MARKS]

Which of the following can not be used for purification of water?

What is Pig Iron. How is it made? [3 MARKS]

What are the characteristics of a good source of energy? [5 MARKS]

___ is the most abundant element in the universe.

___ allotrope of carbon is used in making high-precision cutting devices for use in the therapeutic field.

How can floods be prevented?

Which of the following diseases is caused by the suspended particles in the earth's atmosphere, released by combustion of coal?

Which of the following is/are the reason/s for the reactivity of elements?

Identify X in the following reaction X + Water → Base.

Select the appropriate demonstrative pronouns for the blanks. smells very pungent. (near) has a better view. (far)

The high specific heat of water is mainly due to and __.