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
Q3. Which social science studies the production, distribution and consumption of wealth? Q3. Which social science studies the production, distribution and consumption of wealth?
(A) Commerce (A) Commerce
(B) Economics (B) Economics
(C) Political Science (C) Political Science
(D) Sociology (D) Sociology
Answer: (B) Economics Answer: (B) Economics
Economics is the social science that studies the production, distribution, and consumption of goods and services, including wealth. Economics is divided into two classes, microeconomics and macroeconomics, and it directly affects everyday life.
Economics is primarily concerned with analyzing the choices that individuals, businesses, governments, and nations make to allocate limited resources. Economic models emerged from the broader field of political economy in the late 19th century.Economics is the social science that studies the production, distribution, and consumption of goods and services, including wealth. Economics is divided into two classes, microeconomics and macroeconomics, and it directly affects everyday life.
Economics is primarily concerned with analyzing the choices that individuals, businesses, governments, and nations make to allocate limited resources. Economic models emerged from the broader field of political economy in the late 19th century.
Q4. Who was the first Nobel Prize winner in Physics? Q4. 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.
Q5. Which of the following Indian Economist won Nobel Prize in Economic Science? Q5. Which of the following Indian Economist won Nobel Prize in Economic Science?
(A) Rabindranath Tagore (A) Rabindranath Tagore
(B) C. V. Raman (B) C. V. Raman
(C) Arundhti Roy (C) Arundhti Roy
(D) Amartya Sen (D) Amartya Sen
Answer: (D) Amartya Sen Answer: (D) Amartya Sen
Amartya Sen is the only Indian economist to win the Nobel Memorial Prize in Economic Sciences, which he received in 1998. Sen is known for his work on welfare economics, social choice theory, and development economics. He is also known for his interest in the problems of society's poorest members and his work on the causes of famine.Amartya Sen is the only Indian economist to win the Nobel Memorial Prize in Economic Sciences, which he received in 1998. Sen is known for his work on welfare economics, social choice theory, and development economics. He is also known for his interest in the problems of society's poorest members and his work on the causes of famine.
Q6. Sound waves can't travel through Q6. Sound waves can't travel through
(A) Water (A) Water
(B) Air (B) Air
(C) Steel (C) Steel
(D) Vaccum (D) Vaccum
Answer: (D) Vaccum Answer: (D) Vaccum
Sound waves cannot travel in a vacuum. It can travel only through a material medium. e.g., solids, liquids and gases.Sound waves cannot travel in a vacuum. It can travel only through a material medium. e.g., solids, liquids and gases.
Q7. What is the scientific field dedicated to the study of heavenly bodies, celestial objects, and phenomena originating beyond Earth's atmosphere? Q7. What is the scientific field dedicated to the study of heavenly bodies, celestial objects, and phenomena originating beyond Earth's atmosphere?
(A) Astrophysics (A) Astrophysics
(B) Astronautics (B) Astronautics
(C) Astrology (C) Astrology
(D) Astronomy (D) Astronomy
Answer: (D) Astronomy Answer: (D) Astronomy
Astronomy is a natural science that involves the scientific study of celestial objects (such as stars, planets, comets, galaxies, and nebulae), the universe as a whole, and the phenomena that originate beyond Earth's atmosphere. It uses principles of mathematics, physics, and chemistry to understand their origin, evolution, physical and chemical properties, and behavior. While cosmology is a branch of astronomy that focuses on the universe's origin, evolution, and large-scale structure, astronomy encompasses the broader study of all extraterrestrial objects and phenomena.Astronomy is a natural science that involves the scientific study of celestial objects (such as stars, planets, comets, galaxies, and nebulae), the universe as a whole, and the phenomena that originate beyond Earth's atmosphere. It uses principles of mathematics, physics, and chemistry to understand their origin, evolution, physical and chemical properties, and behavior. While cosmology is a branch of astronomy that focuses on the universe's origin, evolution, and large-scale structure, astronomy encompasses the broader study of all extraterrestrial objects and phenomena.
Q9. The moon is an example of which type of object? Q9. 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.
Q10. Which planet of the Solar System is the brightest planet? Q10. Which planet of the Solar System is the brightest planet?
(A) Mercury (A) Mercury
(B) Mars (B) Mars
(C) Venus (C) Venus
(D) Jupiter (D) Jupiter
Answer: (C) Venus Answer: (C) Venus
Venus can often be seen within a few hours after sunset or before sunrise as the brightest object in the sky (other than the moon). It looks like a very bright star. Venus is the brightest planet in the Solar System.Venus can often be seen within a few hours after sunset or before sunrise as the brightest object in the sky (other than the moon). It looks like a very bright star. Venus is the brightest planet in the Solar System.