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. The science dealing with X-rays and other high-energy radiation, especially for the diagnosis and treatment of disease. Q1. 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.
Q2. The moon is an example of which type of object? Q2. The moon is an example of which type of object?
(A) Transparent (A) Transparent
(B) Translucent (B) Translucent
(C) Luminous (C) Luminous
(D) Non Luminous (D) Non Luminous
Answer: (D) Non Luminous Answer: (D) Non Luminous
Non Luminous
Moon is non-luminous. It do not produce light, it shines by reflecting the sunlight falling on it.Non Luminous
Moon is non-luminous. It do not produce light, it shines by reflecting the sunlight falling on it.
Q3. Who is the author of the book "An Essay on the nature and Significance of Economic Science"? Q3. 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.
Q4. Indian Institute of science is situated at- Q4. Indian Institute of science is situated at-
(A) Kanpur (A) Kanpur
(B) Bangalore (B) Bangalore
(C) Mumbai (C) Mumbai
(D) Chennai (D) Chennai
Answer: (B) Bangalore Answer: (B) Bangalore
The Indian Institute of Science (IISc) is a public, deemed, research university for higher education and research in science, engineering, design, and management. It is located in the southern Indian city of Bangalore, Karnataka.The Indian Institute of Science (IISc) is a public, deemed, research university for higher education and research in science, engineering, design, and management. It is located in the southern Indian city of Bangalore, Karnataka.
Q5. What is the lower fixed point of fahrenheit scale? Q5. What is the lower fixed point of fahrenheit scale?
(A) 0°F (A) 0°F
(B) 32°F (B) 32°F
(C) 180°F (C) 180°F
(D) 212°F (D) 212°F
Answer: (B) 32°F Answer: (B) 32°F
The lower fixed point in Fahrenheit scale is 32 degree and upper fixed point in Fahrenheit scale is 212 degree. The difference between the two is 180, hence number of division is 180.The lower fixed point in Fahrenheit scale is 32 degree and upper fixed point in Fahrenheit scale is 212 degree. The difference between the two is 180, hence number of division is 180.
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.
Q9. The weight of an object on the moon is equal to ___ of its weight on the earth. Q9. The weight of an object on the moon is equal to ___ of its weight on the earth.
(A) 1/3 (A) 1/3
(B) 1/4 (B) 1/4
(C) 1/5 (C) 1/5
(D) 1/6 (D) 1/6
Answer: (D) 1/6 Answer: (D) 1/6
1/6th
The moon's gravitational force is only about 16.6 % of Earth's gravity which means an object would weigh six times less on the moon than they do on Earth.1/6th
The moon's gravitational force is only about 16.6 % of Earth's gravity which means an object would weigh six times less on the moon than they do on Earth.
