Q1. Identify the normally radioactive material in the following list. Q1. Identify the normally radioactive material in the following list.
(A) Plutonium (A) Plutonium
(B) Germanium (B) Germanium
(C) Osmium (C) Osmium
(D) Cadmium (D) Cadmium
Answer: (A) Plutonium Answer: (A) Plutonium
Plutonium is the only radioactive element in the list.
Plutonium is a radioactive, silvery-gray, metallic element with the symbol Pu and atomic number 94. It has a high surface tension and viscosity compared to other metals, and tarnishes when exposed to air. Plutonium is created in a reactor when uranium atoms absorb neutrons, and is a by-product of nuclear power plants. It is the main fuel in fast neutron reactors, and more than one-third of the energy produced in most nuclear power plants comes from plutonium. Plutonium has five common isotopes, each with a different half-life, which is the time it takes to lose half of its radioactivityPlutonium is the only radioactive element in the list.
Plutonium is a radioactive, silvery-gray, metallic element with the symbol Pu and atomic number 94. It has a high surface tension and viscosity compared to other metals, and tarnishes when exposed to air. Plutonium is created in a reactor when uranium atoms absorb neutrons, and is a by-product of nuclear power plants. It is the main fuel in fast neutron reactors, and more than one-third of the energy produced in most nuclear power plants comes from plutonium. Plutonium has five common isotopes, each with a different half-life, which is the time it takes to lose half of its radioactivity
Q1. Which are the planets in our solar system which do not have any natural satellite? Q1. Which are the planets in our solar system which do not have any natural satellite?
(A) Mercury and Mars (A) Mercury and Mars
(B) Venus and Mars (B) Venus and Mars
(C) Uranus and Mars (C) Uranus and Mars
(D) Mercury and Venus (D) Mercury and Venus
Answer: (D) Mercury and Venus Answer: (D) Mercury and Venus
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Q6. Why the sky appears blue? Q6. Why the sky appears blue?
(A) Reflection of light (A) Reflection of light
(B) Refraction of light (B) Refraction of light
(C) Dispersion of light (C) Dispersion of light
(D) Diffraction of light (D) Diffraction of light
Answer: (C) Dispersion of light Answer: (C) Dispersion of light
Blue colour of the sky is due to dispersion or scattering of light. The two most common types of matter present in the atmosphere are gaseous nitrogen and oxygen. These particles are most effective in scattering the higher frequency and shorter wavelength portions of the visible light spectrum.Blue colour of the sky is due to dispersion or scattering of light. The two most common types of matter present in the atmosphere are gaseous nitrogen and oxygen. These particles are most effective in scattering the higher frequency and shorter wavelength portions of the visible light spectrum.
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Q7. Who is the author of the book "An Essay on the nature and Significance of Economic Science"? Q7. Who is the author of the book "An Essay on the nature and Significance of Economic Science"?
Lionel Robbins is the author of An Essay on the Nature and Significance of Economic Science. The book was first published in 1932.Lionel Robbins is the author of An Essay on the Nature and Significance of Economic Science. The book was first published in 1932.
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Q8. The Science which studies the crust of the earth. Q8. The Science which studies the crust of the earth.
What is one word substitution of the phrase?
What is one word substitution of the phrase?
(A) zoology (A) zoology
(B) etymology (B) etymology
(C) biology (C) biology
(D) geology (D) geology
Answer: (D) geology Answer: (D) geology
Substitute Word: geology.
Geology is a broad term that encompasses the study of Earth's solid, liquid, and gaseous parts, as well as the processes that shape them. It includes the study of rocks, minerals, fossils, and the history of the planet.Substitute Word: geology.
Geology is a broad term that encompasses the study of Earth's solid, liquid, and gaseous parts, as well as the processes that shape them. It includes the study of rocks, minerals, fossils, and the history of the planet.
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Q9. Who was the first Nobel Prize winner in Physics? Q9. Who was the first Nobel Prize winner in Physics?
(A) Wilhelm Rontgen (A) Wilhelm Rontgen
(B) Hendrik Lorentz (B) Hendrik Lorentz
(C) Marie Curie (C) Marie Curie
(D) Pierre Curie (D) Pierre Curie
Answer: (A) Wilhelm Rontgen Answer: (A) Wilhelm Rontgen
Wilhelm Conrad Rontgen
Wilhelm Röntgen, on 8 November 1895, produced and detected electromagnetic radiation in a wavelength range known as X-rays or Röntgen rays and got the first Nobel Prize in Physics in 1901.Wilhelm Conrad Rontgen
Wilhelm Röntgen, on 8 November 1895, produced and detected electromagnetic radiation in a wavelength range known as X-rays or Röntgen rays and got the first Nobel Prize in Physics in 1901.
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Q10. The science dealing with X-rays and other high-energy radiation, especially for the diagnosis and treatment of disease. Q10. The science dealing with X-rays and other high-energy radiation, especially for the diagnosis and treatment of disease.
What is one word substitution of the phrase?
What is one word substitution of the phrase?
(A) nephrology (A) nephrology
(B) neurology (B) neurology
(C) pathology (C) pathology
(D) radiology (D) radiology
Answer: (D) radiology Answer: (D) radiology
Substitute Word: radiology.
Radiology encompasses the medical use of imaging techniques such as X-rays, CT scans, MRI scans, Ultrasound, etc.Substitute Word: radiology.
Radiology encompasses the medical use of imaging techniques such as X-rays, CT scans, MRI scans, Ultrasound, etc.