7248 + Interview Questions in Chemistry

1.	What will be the velocity of an electron in nth bohr orbit if reduced mass of system is m
Answer» What will be the velocity of an electron in nth bohr orbit if reduced mass of system is m

Discussion

2.	Complétez les mots croisés en utilisant les participes passés des verbes donnés.commencercontinuerdanserdemanderdîneraimerécouterétudierfermergelerjouermangerneigerparlertournertravailler
Answer» Complétez les mots croisés en utilisant les participes passés des verbes donnés. commencer continuer danser demander dîner aimer écouter étudier fermer geler jouer manger neiger parler tourner travailler

Discussion

3.	Why Zinc is the most preferred metal in the laboratory for preparation of hydrogen by the metal-acid reaction?
Answer» Why Zinc is the most preferred metal in the laboratory for preparation of hydrogen by the metal-acid reaction?

Discussion

4.	One mole of a monoatomic real gas satisfies the equation p(V−b)=RT where b is constant. The incorrect relationship of interatomic potential V(r) and interatomic distance r for the gas is given by:
Answer» One mole of a monoatomic real gas satisfies the equation $p (V - b) = R T$ where $b$ is constant. The incorrect relationship of interatomic potential $V (r)$ and interatomic distance $r$ for the gas is given by:

Discussion

5.	The number of electrons in 0.42 g N3 ion is
Answer» The number of electrons in 0.42 g N3 ion is

Discussion

6.	Describe the process of neutralization with the help of an example.
Answer» Describe the process of neutralization with the help of an example.

Discussion

7.	27. What volume of 0.1M AGNO3 solution is required to react completely with 500ml if 0.2M BaCl2 soln to form ppt of AgCl?
Answer» 27. What volume of 0.1M AGNO3 solution is required to react completely with 500ml if 0.2M BaCl2 soln to form ppt of AgCl?

Discussion

8.	Thermoplastics are a)linear polymersb)highly crosslinkedc) both a and bd) crystalline
Answer» Thermoplastics are a)linear polymers b)highly crosslinked c) both a and b d) crystalline

Discussion

9.	41. Weight of one atom of Ag is _____ gm.(Ag=108)
Answer» 41. Weight of one atom of Ag is _____ gm.(Ag=108)

Discussion

10.

The solubility of potassium chloride (KCl) and Hydrogen chloride (HCl) for different temperatures is given in the table below: Temperature (degree celsius) 10 20 30 40 50 Solubility (g per 100 ml), KCl 31.2 34.2 37.2 40.1 42.6 Solubility ( g per 100 ml), HCl 75 70 65.5 61 57.5 Let us assume you are asked to dissolve 75 g of HCl completely in a beaker containing 100 mL of water at 40∘C. What should be done?

Answer»

The solubility of potassium chloride (KCl) and Hydrogen chloride (HCl) for different temperatures is given in the table below:

Temperature (degree celsius)	10	20	30	40	50
Solubility (g per 100 ml), KCl	31.2	34.2	37.2	40.1	42.6
Solubility ( g per 100 ml), HCl	75	70	65.5	61	57.5

Let us assume you are asked to dissolve 75 g of HCl completely in a beaker containing 100 mL of water at $40^{\circ} C$ . What should be done?

Discussion

11.	Silver is the best conductor of electricity but copper is used instead of silver for making wires. Why?
Answer» Silver is the best conductor of electricity but copper is used instead of silver for making wires. Why?

Discussion

12.	Why is alkynes acidic?
Answer» Why is alkynes acidic?

Discussion

13.	90.what is combustible subtances and how they affect on environment
Answer» 90.what is combustible subtances and how they affect on environment

Discussion

14.	Hydrogen resembles halogens in many aspects but which is the most important aspect:-
Answer» Hydrogen resembles halogens in many aspects but which is the most important aspect:-

Discussion

15.	Magnesium is more reactive than copper or iron but iron is more reactive than copper. Which of the following pots will get damaged and why?(i) A solution of magnesium sulphate is kept in copper pot.(ii) A solution of copper sulphate is kept in iron pot.(iii) A solution of magnesium sulphate is kept in iron pot.
Answer» Magnesium is more reactive than copper or iron but iron is more reactive than copper. Which of the following pots will get damaged and why? (i) A solution of magnesium sulphate is kept in copper pot. (ii) A solution of copper sulphate is kept in iron pot. (iii) A solution of magnesium sulphate is kept in iron pot.

Discussion

16.	Why do diamond considered as a non metal when it has all the properties of metals ?
Answer» Why do diamond considered as a non metal when it has all the properties of metals ?

Discussion

17.	In an atom two electrons move round the nucleus in circular orbits of radii r and 4r. The ratio of time taken by them to complete one revolution is -
Answer» In an atom two electrons move round the nucleus in circular orbits of radii r and 4r. The ratio of time taken by them to complete one revolution is -

Discussion

18.	How are sol solution and suspension different from each other?
Answer» How are sol solution and suspension different from each other?

Discussion

19.	In the given diagrams, the circular rings around the nucleus represents:
Answer» In the given diagrams, the circular rings around the nucleus represents:

Discussion

20.	List all the non-metals and metalloids in modern periodic table.
Answer» List all the non-metals and metalloids in modern periodic table.

Discussion

21.	What is the chemical formula of magnesium nitride?
Answer» What is the chemical formula of magnesium nitride?

Discussion

22.	State (a) two uses of kerosene, and (b) two uses of paraffin wax.
Answer» State (a) two uses of kerosene, and (b) two uses of paraffin wax.

Discussion

23.	100ml of 1.5M solutionA is mixed with 100ml of solutionB.Find molarity of A in final mixture
Answer» 100ml of 1.5M solutionA is mixed with 100ml of solutionB.Find molarity of A in final mixture

Discussion

24.	To understand static electricity, we need to understand that atoms are the_______.
Answer» To understand static electricity, we need to understand that atoms are the_______.

Discussion

25.	Question 15Name two major non-metals which are present in fertilizers and enhance the growth of plants.
Answer» Question 15 Name two major non-metals which are present in fertilizers and enhance the growth of plants.

Discussion

26.	Question 4 (b)Sodium is a very reactive metal. (True/False)
Answer» Question 4 (b) Sodium is a very reactive metal. (True/False)

Discussion

27.	csBr has cubic in diamond carbon atom occupy fcc lattice points as well as alternate tetrahedral voids . if edge length of the unit cell is 3.56pm , then find radious of carbon atom
Answer» csBr has cubic in diamond carbon atom occupy fcc lattice points as well as alternate tetrahedral voids . if edge length of the unit cell is 3.56pm , then find radious of carbon atom

Discussion

28.	What is open chain isomers for propone
Answer» What is open chain isomers for propone

Discussion

29.	Which of the following metal can displace zinc from its solution of zinc sulphate?
Answer» Which of the following metal can displace zinc from its solution of zinc sulphate?

Discussion

30.	Which of the following interhalogen compound is solid in nature?
Answer» Which of the following interhalogen compound is solid in nature?

Discussion

31.	If you reuse a plastic bottle, how are you helping the environment?
Answer» If you reuse a plastic bottle, how are you helping the environment?

Discussion

32.	Petroleum is formed from dead:
Answer» Petroleum is formed from dead:

Discussion

33.	Question 14An atom with 3 protons and 4 neutrons will have a valency of (a) 3(b) 7(c) 1(d) 4
Answer» Question 14 An atom with 3 protons and 4 neutrons will have a valency of (a) 3 (b) 7 (c) 1 (d) 4

Discussion

34.	how is the loss of copper ions from copper sulphate solution compenstated
Answer» how is the loss of copper ions from copper sulphate solution compenstated

Discussion

35.

Match the following. ‘A’ ‘B’ (a) Isotopes of cobalt 1. Three (b) Valency of nitrogen 2. Treatment of cancer (c) Non-metal 3. Electrons in the outermost orbit (d) Metal 4. Receives electrons (e) Valency 5. Loses electrons

Answer»

Match the following.

‘A’		‘B’
(a)	Isotopes of cobalt		1.	Three
(b)	Valency of nitrogen		2.	Treatment of cancer
(c)	Non-metal		3.	Electrons in the outermost orbit
(d)	Metal		4.	Receives electrons
(e)	Valency		5.	Loses electrons

Discussion

36.	Which of the following are properties of anode rays?
Answer» Which of the following are properties of anode rays?

Discussion

37.	Classify polymers on the basis of its structure?
Answer» Classify polymers on the basis of its structure?

Discussion

38.	The synthetic fibre used in the production of following products is:
Answer» The synthetic fibre used in the production of following products is:

Discussion

39.	Define photochemical reaction and electrochemical reaction with an example.
Answer» Define photochemical reaction and electrochemical reaction with an example.

Discussion

40.	A metal on reaction with an acid, liberates a gas which gives a pop sound when brought in contact with a flame. Identify the gas?
Answer» A metal on reaction with an acid, liberates a gas which gives a pop sound when brought in contact with a flame. Identify the gas?

Discussion

41.	Which of the following correctly connect items in column - I with column - II Column – I Column – IIA. Nylon P. ThermoplasticB. PVC Q. Thermosetting plasticC. Bakelite R. Fibre
Answer» Which of the following correctly connect items in column - I with column - II Column – I Column – II A. Nylon P. Thermoplastic B. PVC Q. Thermosetting plastic C. Bakelite R. Fibre

Discussion

42.	An equal amount of heat is supplied to the same amount of coconut oil and water. Both of them were initially at the same temperature. The temperature of coconut oil is ___ that of water.
Answer» An equal amount of heat is supplied to the same amount of coconut oil and water. Both of them were initially at the same temperature. The temperature of coconut oil is ___ that of water.

Discussion

43.	What is a polar and a non-polar solute
Answer» What is a polar and a non-polar solute

Discussion

44.	The Molar heat capacity of a certain subs†an ce varies with temperature T as c=a+bT where a=27.2J/mol K and b=4×10^{-3} J/mol K^2 . Then the heat necessary to change the Temperature of 2 moles of this subs†an ce from 27 degree celcius to 427 degree celcius is 24460J , 23360J , 23460J , 22360J
Answer» The Molar heat capacity of a certain subs†an ce varies with temperature T as c=a+bT where a=27.2J/mol K and b=4×10^{-3} J/mol K^2 . Then the heat necessary to change the Temperature of 2 moles of this subs†an ce from 27 degree celcius to 427 degree celcius is 24460J , 23360J , 23460J , 22360J

Discussion

45.	Iron is more reactive than copper. Can you write an activity to show this?
Answer» Iron is more reactive than copper. Can you write an activity to show this?

Discussion

46.	Explain the electronic concept of oxidation and reduction. [3 MARKS]
Answer» Explain the electronic concept of oxidation and reduction. [3 MARKS]

Discussion

47.	Basic form of matter that cannot be broken down into simpler substances by chemical reactions is called:
Answer» Basic form of matter that cannot be broken down into simpler substances by chemical reactions is called:

Discussion

48.	Which of the following metals cannot be used to be electroplated on the surface of another metal using an aqueous electrolyte?
Answer» Which of the following metals cannot be used to be electroplated on the surface of another metal using an aqueous electrolyte?

Discussion

49.	Which of the following is not an impurity present in hydrogen gas during the laboratory preparation of hydrogen?
Answer» Which of the following is not an impurity present in hydrogen gas during the laboratory preparation of hydrogen?

Discussion

50.	While refining petroleum. Which property is used to separate petroleum into its various fractions?
Answer» While refining petroleum. Which property is used to separate petroleum into its various fractions?

Discussion

Explore topic-wise InterviewSolutions in Current Affairs.

What will be the velocity of an electron in nth bohr orbit if reduced mass of system is m

Complétez les mots croisés en utilisant les participes passés des verbes donnés.commencercontinuerdanserdemanderdîneraimerécouterétudierfermergelerjouermangerneigerparlertournertravailler

Why Zinc is the most preferred metal in the laboratory for preparation of hydrogen by the metal-acid reaction?

One mole of a monoatomic real gas satisfies the equation p(V−b)=RT where b is constant. The incorrect relationship of interatomic potential V(r) and interatomic distance r for the gas is given by:

The number of electrons in 0.42 g N3 ion is

Describe the process of neutralization with the help of an example.

27. What volume of 0.1M AGNO3 solution is required to react completely with 500ml if 0.2M BaCl2 soln to form ppt of AgCl?

Thermoplastics are a)linear polymersb)highly crosslinkedc) both a and bd) crystalline

41. Weight of one atom of Ag is _____ gm.(Ag=108)

Silver is the best conductor of electricity but copper is used instead of silver for making wires. Why?

Why is alkynes acidic?

90.what is combustible subtances and how they affect on environment

Hydrogen resembles halogens in many aspects but which is the most important aspect:-

Why do diamond considered as a non metal when it has all the properties of metals ?

In an atom two electrons move round the nucleus in circular orbits of radii r and 4r. The ratio of time taken by them to complete one revolution is -

How are sol solution and suspension different from each other?

In the given diagrams, the circular rings around the nucleus represents:

List all the non-metals and metalloids in modern periodic table.

What is the chemical formula of magnesium nitride?

State (a) two uses of kerosene, and (b) two uses of paraffin wax.

100ml of 1.5M solutionA is mixed with 100ml of solutionB.Find molarity of A in final mixture

To understand static electricity, we need to understand that atoms are the_______.

Question 15Name two major non-metals which are present in fertilizers and enhance the growth of plants.

Question 4 (b)Sodium is a very reactive metal. (True/False)

csBr has cubic in diamond carbon atom occupy fcc lattice points as well as alternate tetrahedral voids . if edge length of the unit cell is 3.56pm , then find radious of carbon atom

What is open chain isomers for propone

Which of the following metal can displace zinc from its solution of zinc sulphate?

Which of the following interhalogen compound is solid in nature?

If you reuse a plastic bottle, how are you helping the environment?

Petroleum is formed from dead:

Question 14An atom with 3 protons and 4 neutrons will have a valency of (a) 3(b) 7(c) 1(d) 4

how is the loss of copper ions from copper sulphate solution compenstated

Match the following. ‘A’ ‘B’ (a) Isotopes of cobalt 1. Three (b) Valency of nitrogen 2. Treatment of cancer (c) Non-metal 3. Electrons in the outermost orbit (d) Metal 4. Receives electrons (e) Valency 5. Loses electrons

Which of the following are properties of anode rays?

Classify polymers on the basis of its structure?

The synthetic fibre used in the production of following products is:

Define photochemical reaction and electrochemical reaction with an example.

A metal on reaction with an acid, liberates a gas which gives a pop sound when brought in contact with a flame. Identify the gas?

Which of the following correctly connect items in column - I with column - II Column – I Column – IIA. Nylon P. ThermoplasticB. PVC Q. Thermosetting plasticC. Bakelite R. Fibre

An equal amount of heat is supplied to the same amount of coconut oil and water. Both of them were initially at the same temperature. The temperature of coconut oil is ___ that of water.

What is a polar and a non-polar solute

The Molar heat capacity of a certain subs†an ce varies with temperature T as c=a+bT where a=27.2J/mol K and b=4×10^{-3} J/mol K^2 . Then the heat necessary to change the Temperature of 2 moles of this subs†an ce from 27 degree celcius to 427 degree celcius is 24460J , 23360J , 23460J , 22360J

Iron is more reactive than copper. Can you write an activity to show this?

Explain the electronic concept of oxidation and reduction. [3 MARKS]

Basic form of matter that cannot be broken down into simpler substances by chemical reactions is called:

Which of the following metals cannot be used to be electroplated on the surface of another metal using an aqueous electrolyte?

Which of the following is not an impurity present in hydrogen gas during the laboratory preparation of hydrogen?

While refining petroleum. Which property is used to separate petroleum into its various fractions?