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- Question
Which of the following is used as a moderator in nuclear reactor?
Options- A. Thorium
- B. Graphite
- C. Radium
- D. Ordinary water
- Correct Answer
- Graphite
- 1. Mesons are found in
Options- A. Laser beam
- B. X-rays
- C. Gamma rays
- D. Cosmic rays Discuss
- 2. One fathom is equal to
Options- A. 6 feet
- B. 6 meters
- C. 60 feet
- D. 100 cm Discuss
- 3. Electric current is measure by
Options- A. commutator
- B. anemometer
- C. ammeter
- D. voltmeter Discuss
- 4. Fathom is the unit of
Options- A. sound
- B. depth
- C. frequency
- D. distance Discuss
- 5. One kilometre is equal to how many miles?
Options- A. 0.84
- B. 0.5
- C. 1.6
- D. 0.62 Discuss
- 6. Nuclear fission is caused by the impact of
Options- A. neutron
- B. proton
- C. deuteron
- D. electron Discuss
- 7. Atoms of an element differ from those of all other elements in
Options- A. atomic number and electronic configuration
- B. number of neutrons and number of valence electrons
- C. atomic number and number of valence electrons
- D. number of neutrons and electronic configuration Discuss
- 8. Which radioactive pollutant has recently drawn to public, due to its occurrence in the building material?
Options- A. Thorium
- B. Radium
- C. Plutonium
- D. Radan Discuss
- 9. Which among the following is a positively charged particle emitted by a radioactive element?
Options- A. Beta ray
- B. Alpha ray
- C. Cathode ray
- D. Gamma ray Discuss
- 10. The wavelength of X-rays is of the order of
Options- A. 10 micron
- B. 1 angstrom
- C. 1 cm
- D. 1 m Discuss
General Science problems
Search Results
Correct Answer: Cosmic rays
Correct Answer: 6 feet
Correct Answer: ammeter
Correct Answer: depth
Correct Answer: 0.62
Correct Answer: neutron
Correct Answer: atomic number and electronic configuration
Correct Answer: Thorium
Correct Answer: Alpha ray
Correct Answer: 1 angstrom
Explanation:
1 angstrom = 1.0 x 10
-10 meters
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