7248 + Interview Questions in Chemistry Page 22 InterviewSolution

1051.	WHAT IS SOLVENT? EXPLAINWHAT IS SOLUTE ? EXPLAIN
Answer» WHAT IS SOLVENT? EXPLAIN WHAT IS SOLUTE ? EXPLAIN

Discussion

1052.	why poac is used
Answer» why poac is used

Discussion

1053.	Identify the fibres that can be manufactured using petrochemicals.
Answer» Identify the fibres that can be manufactured using petrochemicals.

Discussion

1054.	The uniform of fire fighters are coated with a plastic that is fire resistant. Identify the plastic from the given options.
Answer» The uniform of fire fighters are coated with a plastic that is fire resistant. Identify the plastic from the given options.

Discussion

1055.	Amount of catalysts (Nickel, platinum) required for hydrogenation of 10 ml liquid ethene.What's appropriate temperature for hydrogenation using nickel and platinum catalysts?
Answer» Amount of catalysts (Nickel, platinum) required for hydrogenation of 10 ml liquid ethene. What's appropriate temperature for hydrogenation using nickel and platinum catalysts?

Discussion

1056.	Question 24.Which of the following statements is not correct ?(a) All metal carbonates react with acid to give a salt, water and carbon dioxide(b) All metal oxides react with water to give salt and acid(c) Some metals react with acids to give salt and hydrogen(d) Some non-metal oxides react with water to form an acid
Answer» Question 24. Which of the following statements is not correct ? (a) All metal carbonates react with acid to give a salt, water and carbon dioxide (b) All metal oxides react with water to give salt and acid (c) Some metals react with acids to give salt and hydrogen (d) Some non-metal oxides react with water to form an acid

Discussion

1057.	gibbs energy at equilibrium is
Answer» gibbs energy at equilibrium is

Discussion

1058.	Can water be formed by compressing hydrogen and oxygen ?
Answer» Can water be formed by compressing hydrogen and oxygen ?

Discussion

1059.	ntWhat is the difference between poisons and negative catalyst?n
Answer» ntWhat is the difference between poisons and negative catalyst?n

Discussion

1060.	Total mass of ___ = Total mass of products
Answer» Total mass of ___ = Total mass of products

Discussion

1061.	when a gas filled in a closed vessel is heated through 1 degree Celsius its pressure is increased by 0.4 % the initial temperature of the gas was ?
Answer» when a gas filled in a closed vessel is heated through 1 degree Celsius its pressure is increased by 0.4 % the initial temperature of the gas was ?

Discussion

1062.	Give reason : 1) petroleum gas can be compressed. 2) The temperature of liquid remains constant at boiling point when changing in vapour
Answer» Give reason : 1) petroleum gas can be compressed. 2) The temperature of liquid remains constant at boiling point when changing in vapour

1062.

Give reason : 1) petroleum gas can be compressed. 2) The temperature of liquid remains constant at boiling point when changing in vapour

Answer»

Give reason :

1) petroleum gas can be compressed.

2) The temperature of liquid remains constant at boiling point when changing in vapour

Discussion

1063.	the oxidation state of oxygen in the following reaction changes,K+O2 becomes KO2
Answer» the oxidation state of oxygen in the following reaction changes,K+O2 becomes KO2

Discussion

1064.	The number of groups that belong to p-block are:
Answer» The number of groups that belong to p-block are:

Discussion

1065.	The work done in increasing the size of a soap film from 10 × 8 cm to 10 × 11 cm is 3 × 10-4 J. The surface tension of the film is?
Answer» The work done in increasing the size of a soap film from 10 × 8 cm to 10 × 11 cm is 3 × 10^-4 J. The surface tension of the film is?

Discussion

1066.	Which of the following is not a source of wool?
Answer» Which of the following is not a source of wool?

Discussion

1067.	What are tri acidic bases? Give one example? [2 MARKS]
Answer» What are tri acidic bases? Give one example? [2 MARKS]

Discussion

1068.	Metals can be hammered into thin sheets called foils. The property due to which metal is beaten into thin sheets is called __________.
Answer» Metals can be hammered into thin sheets called foils. The property due to which metal is beaten into thin sheets is called __________.

Discussion

1069.	Expressions of kinetic energy
Answer» Expressions of kinetic energy

Discussion

1070.	Copper sulphate dissolves in excess KCN to give
Answer» Copper sulphate dissolves in excess KCN to give

Discussion

1071.	When will you use simple distillation method for separation of liquids?
Answer» When will you use simple distillation method for separation of liquids?

Discussion

1072.	22. What is compressibilily , rigidity,fluidity,solidity
Answer» 22. What is compressibilily , rigidity,fluidity,solidity

Discussion

1073.	Hydrogen in molecular forms exists as:-
Answer» Hydrogen in molecular forms exists as:-

Discussion

1074.	The outermost zone of a candle flame is the : (a) least hot part (b) coldest part (c) hottest part (d) moderately hot part
Answer» The outermost zone of a candle flame is the : (a) least hot part (b) coldest part (c) hottest part (d) moderately hot part

1074.

The outermost zone of a candle flame is the : (a) least hot part (b) coldest part (c) hottest part (d) moderately hot part

Answer»

The outermost zone of a candle flame is the :

(a) least hot part

(b) coldest part

(c) hottest part

(d) moderately hot part

Discussion

1075.	When we add soap to water, the surface tension of water _____.
Answer» When we add soap to water, the surface tension of water _____.

Discussion

1076.	The fission of one uranium nucleus releases energy of amount x joules . Find the number of fission required to produce energy at the rate of y MW to t hours in a nuclear power plant.
Answer» The fission of one uranium nucleus releases energy of amount x joules . Find the number of fission required to produce energy at the rate of y MW to t hours in a nuclear power plant.

Discussion

1077.	Question 30 Fill in the blanks to complete the following paragraph. The name of the product formed in the reaction of sulphur and ___ is sulphur dioxide gas. When sulphur dioxide is dissolved in ____, sulphurous acid is formed. The sulphurous acid turns ____ litmus paper to ____. Generally, oxides of ____ are acidic in nature. After completing the paragraph write two questions which you can raise on the basis of this information.
Answer» Question 30 Fill in the blanks to complete the following paragraph. The name of the product formed in the reaction of sulphur and ___ is sulphur dioxide gas. When sulphur dioxide is dissolved in ____, sulphurous acid is formed. The sulphurous acid turns ____ litmus paper to ____. Generally, oxides of ____ are acidic in nature. After completing the paragraph write two questions which you can raise on the basis of this information.

Discussion

1078.	Explain why, fossil fuels are exhaustible natural resources.
Answer» Explain why, fossil fuels are exhaustible natural resources.

Discussion

1079.	An ideal gas absorbs Q heat in an isobaric process.if adiabatic exponent of the gas is γ ,then what fraction of heat is used to perform work ?
Answer» An ideal gas absorbs Q heat in an isobaric process.if adiabatic exponent of the gas is γ ,then what fraction of heat is used to perform work ?

Discussion

1080.	What is deforestation? Explain its causes?
Answer» What is deforestation? Explain its causes?

Discussion

1081.	How rayon is made
Answer» How rayon is made

Discussion

1082.	Question 7.2Write the balanced chemical equation for the following reaction:Zinc + Silver nitrate → Zinc nitrate + Silver
Answer» Question 7.2 Write the balanced chemical equation for the following reaction: Zinc + Silver nitrate $\to$ Zinc nitrate + Silver

Discussion

1083.	Distance formula
Answer» Distance formula

Discussion

1084.	10g of hydrogen and 64g ofoxygen were filled in a vessel and exploded .Amount of water in the reaction will be
Answer» 10g of hydrogen and 64g ofoxygen were filled in a vessel and exploded .Amount of water in the reaction will be

Discussion

1085.	During an adiabatic process the pressure of a gas is found to be proportional to cube of its absolute temperature then cp/CV=
Answer» During an adiabatic process the pressure of a gas is found to be proportional to cube of its absolute temperature then cp/CV=

Discussion

1086.	Question 25Find the ratio by mass of the combining elements in the following compounds.(a) CaCO3 (d) C2H5OH(b) MgCl2 (e) NH3(c) H2SO4 (f) Ca(OH)2
Answer» Question 25 Find the ratio by mass of the combining elements in the following compounds. (a) $C a C O_{3}$ (d) $C_{2} H_{5} O H$ (b) $M g C l_{2}$ (e) $N H_{3}$ (c) $H_{2} S O_{4}$ (f) $C a (O H)_{2}$

Discussion

1087.	Categorise the following materials as metals and non-metals:Silver, sulphur, copper, carbon, and phosphorous.
Answer» Categorise the following materials as metals and non-metals: Silver, sulphur, copper, carbon, and phosphorous.

Discussion

1088.	How would you show that hydrogen : (a) is a non-supporter of combustion ? (b) is lighter than air ?
Answer» How would you show that hydrogen : (a) is a non-supporter of combustion ? (b) is lighter than air ?

1088.

How would you show that hydrogen : (a) is a non-supporter of combustion ? (b) is lighter than air ?

Answer»

How would you show that hydrogen :

(a) is a non-supporter of combustion ?

(b) is lighter than air ?

Discussion

1089.	Metals generally do not react with which of the following acid?
Answer» Metals generally do not react with which of the following acid?

Discussion

1090.	Statement 1--if one litre of water at 40 degree celsius is mixed with one litre of water at 50 degree Celsius the final temperature of mixture will be between 40 degree Celsius and 50 degree Celsius Statement 2--the temperature of mixture of two liquid does not depend on their masses A. Both statement 1 and 2 are true and statement to is the correct explanation of statement 1 B. Both statement 1 and 2 are true but statement 2 is not the correct explanation of statement 1 C--statement one is true but statement to is false.
Answer» Statement 1--if one litre of water at 40 degree celsius is mixed with one litre of water at 50 degree Celsius the final temperature of mixture will be between 40 degree Celsius and 50 degree Celsius Statement 2--the temperature of mixture of two liquid does not depend on their masses A. Both statement 1 and 2 are true and statement to is the correct explanation of statement 1 B. Both statement 1 and 2 are true but statement 2 is not the correct explanation of statement 1 C--statement one is true but statement to is false.

Discussion

1091.	Which of the following metals form a protective layer of its oxide on reaction with atmospheric oxygen?
Answer» Which of the following metals form a protective layer of its oxide on reaction with atmospheric oxygen?

Discussion

1092.	What is the purpose of the following imperative sentence? Take up one idea. Make that one idea your life - think of it, dream of it, live on that idea.
Answer» What is the purpose of the following imperative sentence? Take up one idea. Make that one idea your life - think of it, dream of it, live on that idea.

1092.

What is the purpose of the following imperative sentence? Take up one idea. Make that one idea your life - think of it, dream of it, live on that idea.

Answer»

What is the purpose of the following imperative sentence?

Take up one idea. Make that one idea your life - think of it, dream of it, live on that idea.

Discussion

1093.	In the bohr's orbit , what is the ratio of total kinetic energy to total energy of the electron??
Answer» In the bohr's orbit , what is the ratio of total kinetic energy to total energy of the electron??

Discussion

1094.	Why do elements combine? Calculate the number of molecules of sulphur (S8 ) present in 16 g of solid sulphur. [3 MARKS]
Answer» Why do elements combine? Calculate the number of molecules of sulphur ( $S_{8}$ ) present in 16 g of solid sulphur. [3 MARKS]

Discussion

1095.	How do we the exception of metal and non-metals and how to identify them
Answer» How do we the exception of metal and non-metals and how to identify them

Discussion

1096.	Give examples for liquid fuels. Why are liquid fuels better than solid fuels? [3 MARKS]
Answer» Give examples for liquid fuels. Why are liquid fuels better than solid fuels? [3 MARKS]

Discussion

1097.	Which of the following does not react with cold water?
Answer» Which of the following does not react with cold water?

Discussion

1098.	In what way is Rutherford's atomic model different from that of Thomson's atomic model for an atom?
Answer» In what way is Rutherford's atomic model different from that of Thomson's atomic model for an atom?

Discussion

1099.	A 5000 kg rocket is set for vertical firing. The exhaust speed is 800 ms1. To give an initial upward acceleration of 20 ms2, the amount of gas ejected per second to supply the needed thrust will be (g= 10 ms2)
Answer» A 5000 kg rocket is set for vertical firing. The exhaust speed is 800 ms1. To give an initial upward acceleration of 20 ms2, the amount of gas ejected per second to supply the needed thrust will be (g= 10 ms2)

Discussion

1100.	An example of exhaustible natural resource is:
Answer» An example of exhaustible natural resource is:

Discussion

Explore topic-wise InterviewSolutions in .

WHAT IS SOLVENT? EXPLAINWHAT IS SOLUTE ? EXPLAIN

why poac is used

Identify the fibres that can be manufactured using petrochemicals.

The uniform of fire fighters are coated with a plastic that is fire resistant. Identify the plastic from the given options.

Amount of catalysts (Nickel, platinum) required for hydrogenation of 10 ml liquid ethene.What's appropriate temperature for hydrogenation using nickel and platinum catalysts?

gibbs energy at equilibrium is

Can water be formed by compressing hydrogen and oxygen ?

ntWhat is the difference between poisons and negative catalyst?n

Total mass of ___ = Total mass of products

when a gas filled in a closed vessel is heated through 1 degree Celsius its pressure is increased by 0.4 % the initial temperature of the gas was ?

Give reason : 1) petroleum gas can be compressed. 2) The temperature of liquid remains constant at boiling point when changing in vapour

the oxidation state of oxygen in the following reaction changes,K+O2 becomes KO2

The number of groups that belong to p-block are:

The work done in increasing the size of a soap film from 10 × 8 cm to 10 × 11 cm is 3 × 10-4 J. The surface tension of the film is?

Which of the following is not a source of wool?

What are tri acidic bases? Give one example? [2 MARKS]

Metals can be hammered into thin sheets called foils. The property due to which metal is beaten into thin sheets is called __________.

Expressions of kinetic energy

Copper sulphate dissolves in excess KCN to give

When will you use simple distillation method for separation of liquids?

22. What is compressibilily , rigidity,fluidity,solidity

Hydrogen in molecular forms exists as:-

The outermost zone of a candle flame is the : (a) least hot part (b) coldest part (c) hottest part (d) moderately hot part

When we add soap to water, the surface tension of water _____.

The fission of one uranium nucleus releases energy of amount x joules . Find the number of fission required to produce energy at the rate of y MW to t hours in a nuclear power plant.

Explain why, fossil fuels are exhaustible natural resources.

An ideal gas absorbs Q heat in an isobaric process.if adiabatic exponent of the gas is γ ,then what fraction of heat is used to perform work ?

What is deforestation? Explain its causes?

How rayon is made

Question 7.2Write the balanced chemical equation for the following reaction:Zinc + Silver nitrate → Zinc nitrate + Silver

Distance formula

10g of hydrogen and 64g ofoxygen were filled in a vessel and exploded .Amount of water in the reaction will be

During an adiabatic process the pressure of a gas is found to be proportional to cube of its absolute temperature then cp/CV=

Question 25Find the ratio by mass of the combining elements in the following compounds.(a) CaCO3 (d) C2H5OH(b) MgCl2 (e) NH3(c) H2SO4 (f) Ca(OH)2

Categorise the following materials as metals and non-metals:Silver, sulphur, copper, carbon, and phosphorous.

How would you show that hydrogen : (a) is a non-supporter of combustion ? (b) is lighter than air ?

Metals generally do not react with which of the following acid?

Which of the following metals form a protective layer of its oxide on reaction with atmospheric oxygen?

What is the purpose of the following imperative sentence? Take up one idea. Make that one idea your life - think of it, dream of it, live on that idea.

In the bohr's orbit , what is the ratio of total kinetic energy to total energy of the electron??

Why do elements combine? Calculate the number of molecules of sulphur (S8 ) present in 16 g of solid sulphur. [3 MARKS]

How do we the exception of metal and non-metals and how to identify them

Give examples for liquid fuels. Why are liquid fuels better than solid fuels? [3 MARKS]

Which of the following does not react with cold water?

In what way is Rutherford's atomic model different from that of Thomson's atomic model for an atom?

A 5000 kg rocket is set for vertical firing. The exhaust speed is 800 ms1. To give an initial upward acceleration of 20 ms2, the amount of gas ejected per second to supply the needed thrust will be (g= 10 ms2)

An example of exhaustible natural resource is: