7248 + Interview Questions in Chemistry Page 7 InterviewSolution

301.	What is an alloy?
Answer» What is an alloy?

Discussion

302.	What is weaving and knitting
Answer» What is weaving and knitting

Discussion

303.	When ice melts it forms water. Ice and water have very different properties. Why then do we say that melting is a physical change?
Answer» When ice melts it forms water. Ice and water have very different properties. Why then do we say that melting is a physical change?

Discussion

304.	One litre of carbon dioxide is passes through red hot coke. The volume becomes 1.4 litres at same temperature or pressure. Write the composition of the products .
Answer» One litre of carbon dioxide is passes through red hot coke. The volume becomes 1.4 litres at same temperature or pressure. Write the composition of the products .

Discussion

305.	Question 5(a) ______ is the property of a material that enables us to see things through it.(b) Which type of object allows us to see things clearly through it. Give an example.(c) Define a translucent object.(d) Name a material that is opaque but it can be made translucent by rubbing it with a little amount of oil.
Answer» Question 5 (a) ______ is the property of a material that enables us to see things through it. (b) Which type of object allows us to see things clearly through it. Give an example. (c) Define a translucent object. (d) Name a material that is opaque but it can be made translucent by rubbing it with a little amount of oil.

305.

Question 5(a) ______ is the property of a material that enables us to see things through it.(b) Which type of object allows us to see things clearly through it. Give an example.(c) Define a translucent object.(d) Name a material that is opaque but it can be made translucent by rubbing it with a little amount of oil.

Answer»

Question 5

(a) ______ is the property of a material that enables us to see things through it.

(b) Which type of object allows us to see things clearly through it. Give an example.

(c) Define a translucent object.

(d) Name a material that is opaque but it can be made translucent by rubbing it with a little amount of oil.

Discussion

306.	The mass ratio of hydrogen to oxygen in water is :
Answer» The mass ratio of hydrogen to oxygen in water is :

Discussion

307.	Does nodes indicates the presence of the nucleus of the atom?
Answer» Does nodes indicates the presence of the nucleus of the atom?

Discussion

308.	Give suitable reasons for the following- (1). Can displacement reaction be a Redox reaction. (2). Gold and Platinum do not get affected even if there is presence of moist air or acidic gases . Why ? (3). Corrosion of Aluminium is considered to be advantageous.
Answer» Give suitable reasons for the following- (1). Can displacement reaction be a Redox reaction. (2). Gold and Platinum do not get affected even if there is presence of moist air or acidic gases . Why ? (3). Corrosion of Aluminium is considered to be advantageous.

Discussion

309.	when 1gm of anhydrous oxalic acid is burnt at 25^° c, the amount of heat liberated is 2\cdot835kj . Enthalpy of combustion is
Answer» when 1gm of anhydrous oxalic acid is burnt at 25^° c, the amount of heat liberated is 2\cdot835kj . Enthalpy of combustion is

Discussion

310.	Is mechanical strength and tensile strength the same?
Answer» Is mechanical strength and tensile strength the same?

Discussion

311.	Why ionic compounds are brittle?
Answer» Why ionic compounds are brittle?

Discussion

312.	Why should we drink boiled water during the rainy season?
Answer» Why should we drink boiled water during the rainy season?

Discussion

313.	Acrylic is -
Answer» Acrylic is -

Discussion

314.	Can hydrogen bond be form with other element instead of flurine, nitrogen and oxygen
Answer» Can hydrogen bond be form with other element instead of flurine, nitrogen and oxygen

Discussion

315.	When we add water to milk, they get mixed properly because
Answer» When we add water to milk, they get mixed properly because

Discussion

316.	A vessel at 25 degree celsius is evacuated to a point where the amount of gas remaining is 5 * 10^9 molecules per m^3 . What is the pressure in the vessel?
Answer» A vessel at 25 degree celsius is evacuated to a point where the amount of gas remaining is 5 * 10^9 molecules per m^3 . What is the pressure in the vessel?

Discussion

317.	What is the least polluting fuel for the vehicles?
Answer» What is the least polluting fuel for the vehicles?

Discussion

318.	Explain why, the disposal of plastic wastes is a major problem. Give two reasons only.
Answer» Explain why, the disposal of plastic wastes is a major problem. Give two reasons only.

Discussion

319.	Hydrogen chloride is a _______ made up of H+ and Cl- which are _______ and ______ respectively.
Answer» Hydrogen chloride is a _______ made up of H⁺ and Cl^- which are _______ and ______ respectively.

Discussion

320.	write an activity to show that hydrogen is produced when calcium reacts with dilute HCL acid.
Answer» write an activity to show that hydrogen is produced when calcium reacts with dilute HCL acid.

Discussion

321.	Mass% of oxygen in Glucose is .
Answer» $M a s s %$ of oxygen in Glucose is .

Discussion

322.	Write the uses of bitumen,coke,petrol and CNG
Answer» Write the uses of bitumen,coke,petrol and CNG

Discussion

323.	what is an isotone?
Answer» what is an isotone?

Discussion

324.	Carbon monoxide acts as a good reducing agent. Explain.
Answer» Carbon monoxide acts as a good reducing agent. Explain.

Discussion

325.	Red litmus turns blue when the solution is:
Answer» Red litmus turns blue when the solution is:

Discussion

326.	Identify the substance used as a moderator in nuclear reactors.
Answer» Identify the substance used as a moderator in nuclear reactors.

Discussion

327.	The uniform of firefighters is coated with a plastic that is fire resistant. Identify the plastic from the given options.
Answer» The uniform of firefighters is coated with a plastic that is fire resistant. Identify the plastic from the given options.

Discussion

328.	Naveen studied the characteristics of three metals X, Y and Z, when exposed to moist air. Following observations were made: MetalColour changeXGreen coatingYBrownish redZNo change Identify the probable metals Naveen had.
Answer» Naveen studied the characteristics of three metals X, Y and Z, when exposed to moist air. Following observations were made: $\begin{matrix} M e t a l & C o l o u r c h a n g e X & G r e e n c o a t i n g Y & B r o w n i s h r e d Z & N o c h a n g e \end{matrix}$ Identify the probable metals Naveen had.

Discussion

329.	Q1. How to find the radius in a atom ?
Answer» Q1. How to find the radius in a atom ?

Discussion

330.	Q 32/90 Glucose is added to water such that themole fraction of water in the solution becomes 0.8.The boiling point of this solution is (Given Kb for water0.52 K kg mol-1)
Answer» Q 32/90 Glucose is added to water such that themole fraction of water in the solution becomes 0.8.The boiling point of this solution is (Given Kb for water0.52 K kg mol-1)

Discussion

331.	Question 23Match items in List A with the items of list B.List AList B(a)Nylon(i) Non-stick coating(b) PET(ii) Electric switches(c) Rayon(iii) Parachutes(d) Thermosetting plastics(iv) Polyster(e) Teflon(v) Artificial silk
Answer» Question 23 Match items in List A with the items of list B. $\begin{matrix} List A & List B (a)Nylon & (i) Non-stick coating (b) PET & (ii) Electric switches (c) Rayon & (iii) Parachutes (d) Thermosetting plastics & (iv) Polyster (e) Teflon & (v) Artificial silk \end{matrix}$

Discussion

332.	'Manufacturing synthetic fibres is actually helping conservation of forests'. Comment.
Answer» 'Manufacturing synthetic fibres is actually helping conservation of forests'. Comment.

Discussion

333.	Can you give some questions about exponents for practice Particularly find. M value
Answer» Can you give some questions about exponents for practice Particularly find. M value

333.

Can you give some questions about exponents for practice Particularly find. M value

Answer»

Can you give some questions about exponents for practice

Particularly find. M value

Discussion

334.	An empty glass, in fact, is not empty. Explain
Answer» An empty glass, in fact, is not empty. Explain

Discussion

335.	Some of the following statements are incorrect. Find the incorrect statements and correct them.(a) The property of metals by virtue of which they can be drawn into wires is called ductility.(b) Metals are good conductor of electricity but poor conductor of heat.(c) Articles made of metals usually produce ringing sound when struck hard.(d) Oxides of non-metals and metals are acidic in nature.(e) A less reactive metal replaces a more reactive metal from its salt solution in water.
Answer» Some of the following statements are incorrect. Find the incorrect statements and correct them. (a) The property of metals by virtue of which they can be drawn into wires is called ductility. (b) Metals are good conductor of electricity but poor conductor of heat. (c) Articles made of metals usually produce ringing sound when struck hard. (d) Oxides of non-metals and metals are acidic in nature. (e) A less reactive metal replaces a more reactive metal from its salt solution in water.

Discussion

336.	Pavani is very conscious about pollution. So, to reduce the effect of pollution which fuel should she use for her vehicle?
Answer» Pavani is very conscious about pollution. So, to reduce the effect of pollution which fuel should she use for her vehicle?

Discussion

337.	How to distinguish oxides as acidic and basic?
Answer» How to distinguish oxides as acidic and basic?

Discussion

338.	What is the full form of LPG ?
Answer» What is the full form of LPG ?

Discussion

339.	In exponent there is logarithms. What is this explain briefly please?????
Answer» In exponent there is logarithms. What is this explain briefly please?????

Discussion

340.	The chemical formula for hydrated copper sulphate is CuSO4.5H2O. What is the 5 molecules of water associated with the salt called?
Answer» The chemical formula for hydrated copper sulphate is $C u S O_{4} .5 H_{2} O$ . What is the 5 molecules of water associated with the salt called?

Discussion

341.	What dangers will we have to face if the proportions of oxygen and nitrogen in the air undergo a change?
Answer» What dangers will we have to face if the proportions of oxygen and nitrogen in the air undergo a change?

Discussion

342.	Question 7 How would you obtain clear water from a sample of muddy water?
Answer» Question 7 How would you obtain clear water from a sample of muddy water?

342.

Question 7 How would you obtain clear water from a sample of muddy water?

Answer»

Question 7

How would you obtain clear water from a sample of muddy water?

Discussion

343.	What are the chareterstics of particles of matter
Answer» What are the chareterstics of particles of matter

Discussion

344.	Why is the rusting of iron termed as a chemical change?
Answer» Why is the rusting of iron termed as a chemical change?

Discussion

345.	In Australia, people are suffering from skin cancer due to:
Answer» In Australia, people are suffering from skin cancer due to:

Discussion

346.	Plastic bags are considered bad for soil because:
Answer» Plastic bags are considered bad for soil because:

Discussion

347.	14. For a chemical reaction X to Y, the rate of reaction increases by a factory if 1.837 when the concentration of X is increased by 1.5 times, what is the order is the reaction with respect to X ?
Answer» 14. For a chemical reaction X to Y, the rate of reaction increases by a factory if 1.837 when the concentration of X is increased by 1.5 times, what is the order is the reaction with respect to X ?

Discussion

348.	Which of the following statement(s) is/are incorrect?
Answer» Which of the following statement(s) is/are incorrect?

Discussion

349.	Why is it necessary to remove sulphur from petroleum products?
Answer» Why is it necessary to remove sulphur from petroleum products?

Discussion

350.	During a chemical reaction, it was found that Sulphur Trioxide was released. The valency of Sulphur in the compound is ___ .
Answer» During a chemical reaction, it was found that Sulphur Trioxide was released. The valency of Sulphur in the compound is ___ .

Discussion

Explore topic-wise InterviewSolutions in .

What is an alloy?

What is weaving and knitting

When ice melts it forms water. Ice and water have very different properties. Why then do we say that melting is a physical change?

One litre of carbon dioxide is passes through red hot coke. The volume becomes 1.4 litres at same temperature or pressure. Write the composition of the products .

The mass ratio of hydrogen to oxygen in water is :

Does nodes indicates the presence of the nucleus of the atom?

Give suitable reasons for the following- (1). Can displacement reaction be a Redox reaction. (2). Gold and Platinum do not get affected even if there is presence of moist air or acidic gases . Why ? (3). Corrosion of Aluminium is considered to be advantageous.

when 1gm of anhydrous oxalic acid is burnt at 25^° c, the amount of heat liberated is 2\cdot835kj . Enthalpy of combustion is

Is mechanical strength and tensile strength the same?

Why ionic compounds are brittle?

Why should we drink boiled water during the rainy season?

Acrylic is -

Can hydrogen bond be form with other element instead of flurine, nitrogen and oxygen

When we add water to milk, they get mixed properly because

A vessel at 25 degree celsius is evacuated to a point where the amount of gas remaining is 5 * 10^9 molecules per m^3 . What is the pressure in the vessel?

What is the least polluting fuel for the vehicles?

Explain why, the disposal of plastic wastes is a major problem. Give two reasons only.

Hydrogen chloride is a _______ made up of H+ and Cl- which are _______ and ______ respectively.

write an activity to show that hydrogen is produced when calcium reacts with dilute HCL acid.

Mass% of oxygen in Glucose is .

Write the uses of bitumen,coke,petrol and CNG

what is an isotone?

Carbon monoxide acts as a good reducing agent. Explain.

Red litmus turns blue when the solution is:

Identify the substance used as a moderator in nuclear reactors.

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

Naveen studied the characteristics of three metals X, Y and Z, when exposed to moist air. Following observations were made: MetalColour changeXGreen coatingYBrownish redZNo change Identify the probable metals Naveen had.

Q1. How to find the radius in a atom ?

Q 32/90 Glucose is added to water such that themole fraction of water in the solution becomes 0.8.The boiling point of this solution is (Given Kb for water0.52 K kg mol-1)

Question 23Match items in List A with the items of list B.List AList B(a)Nylon(i) Non-stick coating(b) PET(ii) Electric switches(c) Rayon(iii) Parachutes(d) Thermosetting plastics(iv) Polyster(e) Teflon(v) Artificial silk

'Manufacturing synthetic fibres is actually helping conservation of forests'. Comment.

Can you give some questions about exponents for practice Particularly find. M value

An empty glass, in fact, is not empty. Explain

Pavani is very conscious about pollution. So, to reduce the effect of pollution which fuel should she use for her vehicle?

How to distinguish oxides as acidic and basic?

What is the full form of LPG ?

In exponent there is logarithms. What is this explain briefly please?????

The chemical formula for hydrated copper sulphate is CuSO4.5H2O. What is the 5 molecules of water associated with the salt called?

What dangers will we have to face if the proportions of oxygen and nitrogen in the air undergo a change?

Question 7 How would you obtain clear water from a sample of muddy water?

What are the chareterstics of particles of matter

Why is the rusting of iron termed as a chemical change?

In Australia, people are suffering from skin cancer due to:

Plastic bags are considered bad for soil because:

14. For a chemical reaction X to Y, the rate of reaction increases by a factory if 1.837 when the concentration of X is increased by 1.5 times, what is the order is the reaction with respect to X ?

Which of the following statement(s) is/are incorrect?

Why is it necessary to remove sulphur from petroleum products?

During a chemical reaction, it was found that Sulphur Trioxide was released. The valency of Sulphur in the compound is ___ .

Hydrogen chloride is a ___ made up of H+ and Cl- which are _ and ____ respectively.