30 + Interview Questions in Green Chemistry in Applied Chemistry Page 1 InterviewSolution

1.	Micro fluid reactor will minimise _________(a) Solvent waste(b) Efficiency(c) Number of molecules(d) Number of collisionsThis question was posed to me in semester exam.My question is from Methods of Synthesis in chapter Green Chemistry of Applied Chemistry
Answer» The CORRECT answer is (a) SOLVENT waste For EXPLANATION I would say: Micro fluid reactor is used to minimise the solvent waste. When the reaction takes place there will be a PRODUCT sometimes USEFUL by sometimes unnecessary. Such waste must be reduced.

Discussion

2.	One of the principles of green chemistry says that to produce _______ goods.(a) Harmful(b) Commercial(c) Safer(d) Most usedI have been asked this question in an interview for job.My question comes from Principles of Green Chemistry in division Green Chemistry of Applied Chemistry
Answer» Correct choice is (c) Safer The best I can EXPLAIN: One of the PRINCIPLES of GREEN chemistry says that the produced goods must be safe. That means the goods must be not harmful for ENVIRONMENT.

Discussion

3.	An ideal solvent facilitates the __________(a) Mass transfer(b) Dissolving property(c) Combustion(d) TitrationThis question was posed to me in final exam.The question is from Needs of Green Chemistry topic in portion Green Chemistry of Applied Chemistry
Answer» Right option is (a) MASS transfer Easy explanation: An IDEAL solvent facilitates the mass transfer. WATER is CALLED as universal solvent. Any SOLUTE can be dissolved in water and facilitates for mass transfer.

Discussion

4.	What is the percentage atom utilisation?(a) (mole wt of desired product100)/mole wt of (desired product+total product)(b) (mole wt of desired product100)/mole wt of (desired product)(c) (mole wt of desired product100)/mole wt of (desired product+used product)(d) (mole wt of desired product100)/mole wt of (desired product+by product)The question was posed to me in an online quiz.This interesting question is from Needs of Green Chemistry in chapter Green Chemistry of Applied Chemistry
Answer» RIGHT CHOICE is (d) (mole WT of desired product100)/mole wt of (desired product+by product) The EXPLANATION is: The percentage atom utilisation is given by (mole wt of desired product100)/mole wt of (desired product+by product). Here, mole wt INDICATES the molecular weight. The by product can be used to re generate the reaction.

Discussion

5.	Green chemistry is also called as ________(a) Life chemistry(b) Environmental chemistry(c) Organic chemistry(d) Sustainable chemistryThis question was posed to me in exam.I want to ask this question from Needs of Green Chemistry in portion Green Chemistry of Applied Chemistry
Answer» The correct ANSWER is (d) Sustainable chemistry The best explanation: Green chemistry DEALS MAINLY about the pollution VARIATION in the environment and sustainance of the plants and animals and mankind in a HEALTHY manner. So, this is also called as the sustainable chemistry.

Discussion

6.	The green synthesis methods should have _______(a) Low efficiency(b) High harmful by products(c) Low energy requirements(d) Low atom efficiencyThis question was addressed to me in class test.My question is taken from Methods of Synthesis in portion Green Chemistry of Applied Chemistry
Answer» RIGHT choice is (C) Low ENERGY requirements The explanation is: The green synthesis mainly gives the good product with less cost and more standard and no toxic materials. So, the energy REQUIRED will be less.

Discussion

7.	It reduces the use of _________(a) liquid fuels(b) Energy(c) Gaseous fuels(d) Solid fuelsI have been asked this question in exam.My question is from Principles of Green Chemistry in section Green Chemistry of Applied Chemistry
Answer» CORRECT option is (b) ENERGY Explanation: It reduces the use of the energy. The less CONSUMPTION of energy also reduces the cost of production. So, the product will be AVAILABLE at LOW costs.

Discussion

8.	We must use feedstock derived from annually renewable resources or from _______(a) Chemicals(b) Organic compounds(c) Abundant waste(d) PlantsThis question was addressed to me in a national level competition.The question is from Principles of Green Chemistry topic in portion Green Chemistry of Applied Chemistry
Answer» Right option is (c) ABUNDANT waste To EXPLAIN I would say: We must use feedstock derived from annually renewable resources or from abundant wastes. The wastes are utilised BACK.

Discussion

9.	A desirable green solvent should be __________(a) Costly(b) Toxic(c) Readily available(d) SyntheticThis question was addressed to me in an international level competition.My question is from Needs of Green Chemistry topic in section Green Chemistry of Applied Chemistry
Answer» Correct option is (C) Readily available Explanation: A desirable GREEN solvent should be readily available. The desirable green solvent should be CHEAPER. It should be SAFE and nontoxic. It should be natural.

Discussion

10.	Self thermo regulated systems are called as __________(a) Green methodologies(b) Green synthesis(c) Green principles(d) Green conceptsThis question was posed to me in a job interview.I'd like to ask this question from Needs of Green Chemistry topic in chapter Green Chemistry of Applied Chemistry
Answer» RIGHT option is (a) Green METHODOLOGIES The BEST explanation: The SELF thermo regulated systems are called as green methodologies. SOLUBLE polymers are another example that comes under green methodologies.

Discussion

11.	After the use of chemicals, we must ______ them properly.(a) Use(b) Reuse(c) Dispose(d) StoreThe question was posed to me in final exam.This interesting question is from Principles of Green Chemistry topic in section Green Chemistry of Applied Chemistry
Answer» The correct answer is (c) Dispose Explanation: After the use of chemicals, we MUST dispose them properly. The empty CHEMICAL containers should not be reused because they are toxic and if they are not disposed properly, they CREATE the environmental pollution.

Discussion

12.	It reduces the ______ and protects the environment.(a) Pollution(b) Temperature(c) Air(d) WaterI got this question in quiz.My enquiry is from Principles of Green Chemistry in division Green Chemistry of Applied Chemistry
Answer» Right answer is (a) Pollution The explanation is: It REDUCES pollution and PROTECTS the environment. By GREEN synthesis, the products that are non-hazards to the NATURE are PRODUCED. So, no pollution takes place.

Discussion

13.	C2H4 +1/2 O2 → C2H4O(Ethylene oxide). This reaction will takes place under presence of catalyst. Find out the %atom economy.(a) 25%(b) 50%(c) 75%(d) 100%This question was addressed to me by my school teacher while I was bunking the class.This question is from Needs of Green Chemistry topic in portion Green Chemistry of Applied Chemistry
Answer» The correct option is (d) 100% The best I can explain: Ethylene REACTING with oxygen in the PRESENCE of catalyst forms the ethylene oxide. The %ATOM economy can be calculated by (formula wt of atoms utilized/formula wt of REACTANTS)*100. The formula weight of the reactants is 44 and atoms utilized are also 44. So, the %atom economy is 100%.

Discussion

14.	According to the green chemistry, the chemical involved in the production must be ________(a) Non toxic(b) Toxic(c) Highly toxic(d) Produces the toxic by productsI have been asked this question by my school principal while I was bunking the class.Asked question is from Principles of Green Chemistry topic in section Green Chemistry of Applied Chemistry
Answer» RIGHT answer is (a) Non toxic To elaborate: ACCORDING to the green chemistry, the chemical INVOLVED in the production MUST be nontoxic.

Discussion

15.	Green synthesis method is ________ than the conventional method.(a) More costlier(b) More efficient(c) Slower(d) Less efficientI got this question in an online interview.The doubt is from Methods of Synthesis topic in division Green Chemistry of Applied Chemistry
Answer» The correct OPTION is (b) More EFFICIENT For explanation I WOULD SAY: GREEN synthesis method is more efficient than the conventional method. So, the green synthesis method is selected now a days.

Discussion

16.	The atom economy obtained for green synthesis is in the range of _________(a) 62-70%(b) 72-82%(c) 40-50%(d) 90-100%I have been asked this question in class test.This intriguing question comes from Methods of Synthesis topic in division Green Chemistry of Applied Chemistry
Answer» Right answer is (b) 72-82% To explain I WOULD say: The atom ECONOMY obtained for green synthesis is in the RANGE of 72-82%. If the reaction is rearrangement reaction then the % of atom economy is MOSTLY 100%.

Discussion

17.	In green synthetic methods, the high quality product with no ________ are produced.(a) Good products(b) Catalyst(c) Reaction(d) ContaminationThe question was posed to me in unit test.I need to ask this question from Methods of Synthesis topic in portion Green Chemistry of Applied Chemistry
Answer» RIGHT answer is (d) Contamination For EXPLANATION I would say: In green synthetic methods, the HIGH quality product with no contamination is produced. The main aim is to avoid contamination or POLLUTION.

Discussion

18.	In conventional method _________ is used.(a) Nacl(b) Alcl3(c) Na2SO4(d) H2SO4I got this question in a job interview.My question is from Methods of Synthesis topic in chapter Green Chemistry of Applied Chemistry
Answer» Right OPTION is (B) ALCL3 Explanation: In the conventional method AlCl3 is used. All the other ELEMENTS are not supposed to be used in these reactions.

Discussion

19.	In petrochemical industry, both in conventional method and green synthesis what is the first product obtained?(a) 2-ethyl benzene(b) Ethanol(c) Methyl methacrylate(d) 2-methyl propyl benzeneI had been asked this question during an interview for a job.This key question is from Methods of Synthesis topic in portion Green Chemistry of Applied Chemistry
Answer» Correct ANSWER is (d) 2-methyl propyl benzene To EXPLAIN: In petrochemical industry, both in conventional method and green synthesis, 2-methyl propyl benzene is the first PRODUCT obtained. All the other elements may produce LATER in some case.

Discussion

20.	What is the starting material for nylon 6-6 is _________(a) Acetic anhydride(b) 2-methyl propyl benzene(c) Adipic acid(d) Nitric acidI had been asked this question in examination.The query is from Methods of Synthesis in portion Green Chemistry of Applied Chemistry
Answer» Right answer is (c) Adipic ACID For explanation I would SAY: The starting material for producing the NYLON 6-6 is adipic acid. It is prepared from POLY CONDENSATION of hexaethylene diamine and adipic acid.

Discussion

21.	The di-basic acid is used in its ________(a) Impure form(b) Pure form(c) Solid state(d) Liquid formThe question was posed to me in an interview for job.This interesting question is from Methods of Synthesis in section Green Chemistry of Applied Chemistry
Answer» Correct option is (B) Pure FORM Explanation: The di-basic acid is used in its pure form. Its melting point is 152.1^oC. In preparation of the NYLON 6-6, the FIRST step is to prepare the salt.

Discussion

22.	Green chemistry applies across the __________ of a chemical product like design, manufacture and use.(a) Life cycle(b) Properties(c) Uses(d) EfficiencyThis question was posed to me during an interview.My doubt stems from Principles of Green Chemistry topic in chapter Green Chemistry of Applied Chemistry
Answer» The correct answer is (a) LIFE cycle The best explanation: Green CHEMISTRY applies across the life cycle of a chemical product like design, MANUFACTURE and use. It says that manufacturing should be done without any POLLUTION.

Discussion

23.	_________ are greener than the conventional methods.(a) Micro waves(b) Electromagnetic waves(c) Ultra violet waves(d) Radio wavesThis question was posed to me during a job interview.My question is taken from Needs of Green Chemistry in chapter Green Chemistry of Applied Chemistry
Answer» Correct OPTION is (a) Micro waves Easy explanation: Micro waves are greener than the conventional methods in organic synthesis WITHOUT solvents. The WIDE range of micro WAVE CHEMISTRY is extended recently too many aspects of organic synthesis.

Discussion

24.	_________ is the fundamental advantage of the sono chemistry in organic synthesis without solvents.(a) High yields(b) High energy requirements(c) Use of solvents(d) High wastesI had been asked this question in my homework.My question comes from Needs of Green Chemistry topic in division Green Chemistry of Applied Chemistry
Answer» Correct answer is (a) High yields Easiest explanation: The yield should be high. This is one of the advantages of the sono chemistry in organic SYNTHESIS without solvents. The other fundamental advantages are low ENERGY requirements, no USE of solvents and low wastes.

Discussion

25.	Green chemistry improves __________ of chemical manufacturers.(a) Competitiveness(b) Easiness of production(c) Services(d) ChemicalsThe question was posed to me during an online interview.The query is from Principles of Green Chemistry topic in section Green Chemistry of Applied Chemistry
Answer» CORRECT CHOICE is (a) COMPETITIVENESS Best explanation: Green chemistry improves competitiveness of CHEMICAL manufacturers. The products are of LOW cost and good quality. So, it improves the competition.

Discussion

26.	The green solvent maximises the atom _________(a) Molecular weight(b) Electronic configuration(c) Velocity(d) EfficiencyThis question was addressed to me in an international level competition.This intriguing question comes from Needs of Green Chemistry in division Green Chemistry of Applied Chemistry
Answer» Right option is (d) EFFICIENCY Best explanation: The green solvent maximises the atom’s efficiency. For example benzene can be replaced by the TOULENE, cyclo hexane instead of CARBON TETRACHLORIDE can be replaced.

Discussion

27.	In green synthesis by avoiding harmful by products the catalyst used is _________(a) Tungsten(b) Benzene(c) Cyclo hexane(d) Adipic acidThe question was asked in class test.The above asked question is from Methods of Synthesis in chapter Green Chemistry of Applied Chemistry
Answer» RIGHT option is (a) Tungsten To elaborate: In green SYNTHESIS by AVOIDING harmful by products the catalyst used is Tungsten. All the other are CYCLIC elements. They produce some harmful materials as they are carbon compounds.

Discussion

28.	The green synthesis methods should have _________(a) Low efficiency(b) High harmful products(c) Low energy requirements(d) Low atom efficiencyThis question was posed to me during an interview.This is a very interesting question from Principles of Green Chemistry topic in section Green Chemistry of Applied Chemistry
Answer» Right option is (c) LOW ENERGY REQUIREMENTS For EXPLANATION I would say: The green synthesis methods should have high EFFICIENCY, less harmful products, low energy requirements and high atom efficiency.

Discussion

29.	The principles of green chemistry include eliminating ________ treatments.(a) Costly(b) Harmful(c) Hard(d) EasyThis question was posed to me in an online quiz.My question is based upon Principles of Green Chemistry in section Green Chemistry of Applied Chemistry
Answer» Correct answer is (a) COSTLY The explanation is: The principles of green chemistry INCLUDE eliminating costly treatments. It MAKES the REACTIONS with less cost and no toxic materials.

Discussion

30.	The __________ reactions involves reorganisation of the atoms of the molecules.(a) Addition reactions(b) Rearrangement reactions(c) Reorganised reactions(d) Elimination reactionsThis question was addressed to me in an interview for internship.This intriguing question originated from Needs of Green Chemistry in chapter Green Chemistry of Applied Chemistry
Answer» Right ANSWER is (b) Rearrangement REACTIONS To elaborate: The rearrangement reactions involve reorganisation of the ATOMS of the MOLECULES. Because, neither elimination, substitution nor ADDITION of atoms is not taking place. So, the molecule undergoes the rearrangement reactions.

Discussion

Explore topic-wise InterviewSolutions in .

Micro fluid reactor will minimise _________(a) Solvent waste(b) Efficiency(c) Number of molecules(d) Number of collisionsThis question was posed to me in semester exam.My question is from Methods of Synthesis in chapter Green Chemistry of Applied Chemistry

One of the principles of green chemistry says that to produce _______ goods.(a) Harmful(b) Commercial(c) Safer(d) Most usedI have been asked this question in an interview for job.My question comes from Principles of Green Chemistry in division Green Chemistry of Applied Chemistry

An ideal solvent facilitates the __________(a) Mass transfer(b) Dissolving property(c) Combustion(d) TitrationThis question was posed to me in final exam.The question is from Needs of Green Chemistry topic in portion Green Chemistry of Applied Chemistry

Green chemistry is also called as ________(a) Life chemistry(b) Environmental chemistry(c) Organic chemistry(d) Sustainable chemistryThis question was posed to me in exam.I want to ask this question from Needs of Green Chemistry in portion Green Chemistry of Applied Chemistry

The green synthesis methods should have _______(a) Low efficiency(b) High harmful by products(c) Low energy requirements(d) Low atom efficiencyThis question was addressed to me in class test.My question is taken from Methods of Synthesis in portion Green Chemistry of Applied Chemistry

It reduces the use of _________(a) liquid fuels(b) Energy(c) Gaseous fuels(d) Solid fuelsI have been asked this question in exam.My question is from Principles of Green Chemistry in section Green Chemistry of Applied Chemistry

A desirable green solvent should be __________(a) Costly(b) Toxic(c) Readily available(d) SyntheticThis question was addressed to me in an international level competition.My question is from Needs of Green Chemistry topic in section Green Chemistry of Applied Chemistry

Self thermo regulated systems are called as __________(a) Green methodologies(b) Green synthesis(c) Green principles(d) Green conceptsThis question was posed to me in a job interview.I'd like to ask this question from Needs of Green Chemistry topic in chapter Green Chemistry of Applied Chemistry

After the use of chemicals, we must ______ them properly.(a) Use(b) Reuse(c) Dispose(d) StoreThe question was posed to me in final exam.This interesting question is from Principles of Green Chemistry topic in section Green Chemistry of Applied Chemistry

It reduces the ______ and protects the environment.(a) Pollution(b) Temperature(c) Air(d) WaterI got this question in quiz.My enquiry is from Principles of Green Chemistry in division Green Chemistry of Applied Chemistry

Green synthesis method is ________ than the conventional method.(a) More costlier(b) More efficient(c) Slower(d) Less efficientI got this question in an online interview.The doubt is from Methods of Synthesis topic in division Green Chemistry of Applied Chemistry

The atom economy obtained for green synthesis is in the range of _________(a) 62-70%(b) 72-82%(c) 40-50%(d) 90-100%I have been asked this question in class test.This intriguing question comes from Methods of Synthesis topic in division Green Chemistry of Applied Chemistry

In green synthetic methods, the high quality product with no ________ are produced.(a) Good products(b) Catalyst(c) Reaction(d) ContaminationThe question was posed to me in unit test.I need to ask this question from Methods of Synthesis topic in portion Green Chemistry of Applied Chemistry

In conventional method _________ is used.(a) Nacl(b) Alcl3(c) Na2SO4(d) H2SO4I got this question in a job interview.My question is from Methods of Synthesis topic in chapter Green Chemistry of Applied Chemistry

What is the starting material for nylon 6-6 is _________(a) Acetic anhydride(b) 2-methyl propyl benzene(c) Adipic acid(d) Nitric acidI had been asked this question in examination.The query is from Methods of Synthesis in portion Green Chemistry of Applied Chemistry

The di-basic acid is used in its ________(a) Impure form(b) Pure form(c) Solid state(d) Liquid formThe question was posed to me in an interview for job.This interesting question is from Methods of Synthesis in section Green Chemistry of Applied Chemistry

_________ are greener than the conventional methods.(a) Micro waves(b) Electromagnetic waves(c) Ultra violet waves(d) Radio wavesThis question was posed to me during a job interview.My question is taken from Needs of Green Chemistry in chapter Green Chemistry of Applied Chemistry

Green chemistry improves __________ of chemical manufacturers.(a) Competitiveness(b) Easiness of production(c) Services(d) ChemicalsThe question was posed to me during an online interview.The query is from Principles of Green Chemistry topic in section Green Chemistry of Applied Chemistry

In green synthesis by avoiding harmful by products the catalyst used is _________(a) Tungsten(b) Benzene(c) Cyclo hexane(d) Adipic acidThe question was asked in class test.The above asked question is from Methods of Synthesis in chapter Green Chemistry of Applied Chemistry

The principles of green chemistry include eliminating ________ treatments.(a) Costly(b) Harmful(c) Hard(d) EasyThis question was posed to me in an online quiz.My question is based upon Principles of Green Chemistry in section Green Chemistry of Applied Chemistry