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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
Question:- Nucleon is the name which is employed for: (a) Electron and proton (b) proton and neutron (c) Electron and neutron (d) None of these
Answer:- b
Question:- The mass number of an atom is: (a) Number of nucleons in the nucleus (b) Number of protons in the nucleus (c) Number of neutrons in the nucleus (d) None of these
Answer:- a
Question:- Atom is electrically: (a) Positive (b) negative (c) bipositive (d) neutral
Answer:- d
Question:- The atomic properties depend upon: (a) Number of nucleons in the nucleus (b) Number of protons in the nucleus (c) Number of neutrons in the nucleus (d) None of these
Answer:- d
Question:- The number of neutrons and protons in the nucleus of 88Ra226 are: (a) 138 and 88 (b) 88 and 138 (c) 226 and 88 (d) 88 and 226
Answer:- a
Question:- Who was the inventor of radioactivity? (a) Madam Curie (b) Irine Curie (c) Henery Bacqurel (d) Rutherford
Answer:- c
Question:- The penetrating power of which of the following invisible radiations emitting from the nucleus has its maximum value: (a) a-rays (b) f)-rays (c) y-rays (d) None of these
Answer:- c
Question:- Which of the following is negatively charged? (a) Alpha-rays (b) Beta-rays (c) Gama-rays (d) X-ray
Answer:- a