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
Q2. Which planet of the Solar System is the brightest planet? Q2. 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.
Q5. The moon is an example of which type of object? Q5. 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.
Q7. What is the outermost layer of the Earth? Q7. What is the outermost layer of the Earth?
(A) Mantle (A) Mantle
(B) Core (B) Core
(C) Crust (C) Crust
(D) Caldera (D) Caldera
Answer: (C) Crust Answer: (C) Crust
Crust
The structure of the Earth is divided into four major concentric layers: inner core, outer core, mantle and crust (the outermost layer). The crust is made up of tectonic plates, which are in constant motion.Crust
The structure of the Earth is divided into four major concentric layers: inner core, outer core, mantle and crust (the outermost layer). The crust is made up of tectonic plates, which are in constant motion.
Q8. What is the lower fixed point of fahrenheit scale? Q8. 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.
Q9. Which of the following Indian Economist won Nobel Prize in Economic Science? Q9. 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.
Q10. Identify the normally radioactive material in the following list. Q10. 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