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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
Question:- Which of the following treatment is used for removal of biological impurities? A. Sedimentation B. Boiling C. Sterilization D. distillation
Answer:- C
Question:- Which of the following indicator used in determination of hardness? A. EBT B. Phenolphthalein C. Methyl orange D. Thymol blues
Answer:- A
Question:- Who is known as the father of Modern Chemistry? (a) Kolvey (b) Wholer (c) Leviatiae (d) Pasteur.
Answer:- c
Question:- The inventor of the atomic theory is: (a) Rutherford (b) Madam Curie (c) John Dalton (d) Albert Einstein
Answer:- c