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Question:- Which acid is present in lemon? A. marlic acid B. citric acid C. lactic acid D. tartaric acid
Answer:- B
Question:- Natural rubber is a ________ which is having high elasticity. A. Substance B. Material C. Elastomer D. Chemical using carbon as main compound
Answer:- C
Question:- How will you define the process of Vulcanization? A. Sample of butane mixed with sulphur and litharge B. Sample of propane mixed with sulphur and litharge C. Sample of plastic formed carbon mixed with sulphur and litharge D. Sample of rubber mixed with sulphur and litharge
Answer:- D
Question:- What is NBR? A. Normal Acrylonitrile-butadiene rubber B. Natural Acrylonitrile-butadiene rubber C. N Acrylonitrile-butane rubber D. Acrylonitrile-butadiene rubber
Answer:- D
Question:- A synthetic rubber is having__________weight. A. Higher resistance B. Lower density C. Higher molecular D. Higher atomic
Answer:- C
Question:- Which of the following is not a type of elements? A. Metals B. Non Metals C. Metalloids D. Gases
Answer:- D
Question:- Which of the following is the heaviest metal? A. osmium B. mercury C. iron D. nickel
Answer:- B
Question:- Which of the following is the heaviest metal? A. osmium B. mercury C. iron D. nickel
Answer:- B
Question:- Consider following statements: I. Green chemistry focuses on effects of chemical pollutants on nature. II. Environmental chemistry focuses on technological approach to prevent pollution. Which statement(s) is/are correct? A. Only I B. Only II C. Both I & II D. Neither I nor II
Answer:- D
Question:- Which one of the following received the Greener Reaction Conditions Award in 1996? A. Dow Chemical B. Exon Chemicals C. US EPA D. None of these
Answer:- A
Question:- Which of the following is used for clean oxidation? A. Supercritical carbon dioxide B. Supercritical hydrogen C. Aqueous hydrogen peroxide D. All of these 5. Green solvents are derived from ______. A. Renewable resources B. Carbon resources C. Non-renewable resources D. All of these
Answer:- C
Question:- Eating tobacco and throwing on the road can produce______pollutant. A. Air B. Soil C. Noise D. Water
Answer:- A
Question:- Which of the following is not green house gas? A. CO B. O3 C. CH4 D. H2O Vapour
Answer:- B
Question:- Which of the following is not the components of photochemical smog that occurs in warm, dry and sunny climate? A. NO2 B. O3 C. SO3 D. Unsaturated hydrocarbon
Answer:- A