Science Notes

NASA NASA The National Aeronautics and Space Administration (NASA) is the US government organization in charge of the country's civilian space program as well as aeronautics and aerospace research. Established on July 29, 1958, by the National Aeronautics and Space Act, NASA aims to pioneer the future in space exploration, scientific discovery, and aeronautics research. Here are some key points about NASA: 1. ** Mission and Objectives* *: NASA's mission includes space exploration, scientific discovery, and aeronautics research. Its objectives are to expand human knowledge of space, improve technology and space applications, foster international cooperation, and contribute to education and inspiration. 2. ** Major Programs and Projects **:    - **Human Spaceflight**: Includes programs like Apollo (moon missions), the Space Shuttle program, and the International Space Station (ISS). The Artemis program aims to return humans to the moon and eventually send astron...

NEUTRON AND PROTON NEUTRON Neutrons are subatomic particles found in the nucleus of an atom, alongside protons. Here are some key points to understand about neutrons: 1. ** Charge **: Neutrons are electrically neutral, meaning they have no charge. This distinguishes them from protons, which are positively charged, and electrons, which are negatively charged. 2. ** Mass **: Neutrons have a mass slightly greater than that of protons. Compared to electrons, protons and neutrons have substantially larger masses. 3. ** Role in the Nucleus **: Neutrons play a crucial role in the stability of the nucleus. They help to offset the electrostatic repulsion between the positively charged protons. The nucleus would become unstable and disintegrate in the absence of neutrons. 4. ** Discovery **: The neutron was discovered in 1932 by the physicist James Chadwick. His discovery helped to further our understanding of atomic structure and led to significant advancements in nuclear physics. 5...

ISRO Indian Space Research Organisation (ISRO) related MCQ ISRO 1. *Where is the Indian Space Research Organization's (ISRO) headquarters located?**  a) Pune     b) Bangalore     c) Lucknow     d) Mumbai     **Answer: b) Bangalore** ¹ 2. **When was ISRO formed?**     a) 15 August 1947     b) 15 August 1952     c) 15 August 1969     d) 15 August 1967     **Answer: c) 15 August 1969** ¹ 3. **What is the Full Form of SDSC?**     a) Satish Development Space Centre     b) Scientific Development Space Centre     c) Satish Dhawan Space Centre     d) Static Development Space Centre     **Answer: c) Satish Dhawan Space Centre** ¹ 4. **Who was the first Indian to travel in space?**     a) Rakesh S...

SOLER SYSTEM MCQ Multiple-choice questions (MCQs) about the Solar System,with their answers and explanations  1. What planet is referred to as the Red Planet? A. Earth   B. Mars   C. Jupiter   D. Venus   ** Answer: B. Mars* *   **Explanation:** Mars is known as the Red Planet because of its reddish appearance, which is due to iron oxide (rust) on its surface. ### 2. What is the largest planet in our solar system? A. Earth   B. Mars   C. Jupiter   D. Saturn   ** Answer: C. Jupiter**   **Explanation:** Jupiter is the largest planet in our solar system, with a diameter of about 143,000 kilometers.  4. What is the smallest planet in our solar system? A. Mercury   B. Mars   C. Venus   D. Earth   ** Answer: A. Mercury**   **Explanation:** Mercury is the smallest planet in our solar system, with a diameter of about 4,880 kil...

EVS MCQ Here are 20 multiple-choice questions (MCQs) on Environmental Studies (EVS) along with their answers: 1. **Among these, which one is a renewable resource?**    - A) Coal    - B) Oil    - C) Solar Energy    - D) Natural Gas    - **Answer:** C) Solar Energy 2. **What is the main cause of global warming?**    - A) Deforestation    - B) Industrialization    - C) Greenhouse Gas Emissions    - D) Urbanization    - **Answer:** C) Greenhouse Gas Emissions 3. **Which gas is most responsible for the greenhouse effect?**    - A) Oxygen    - B) Nitrogen    - C) Carbon Dioxide    - D) Hydrogen    - **Answer:** C) Carbon Dioxide 4. **What is the primary source of water pollution?**    - A) Agricultural Runoff    - B) Wind Erosion ...

VIROLOGY @ADRE  Here are **20 multiple-choice questions (MCQs)** related to virology, along with their EXPLANATION VIROLOGY  1. **Who is considered the father of Virology?**    - a) Martinus Beijerinck    - b) Dmitri Ivanovsky    - c) John Ellerman    - d) Frederick Twort    - **Answer: a) Martinus Beijerinck**    - Explanation: Martinus Beijerinck is credited with discovering viruses and is often referred to as the father of virology¹. 2. **What is the study of viruses called?**    - a) Bacteriology    - b) Virology    - c) Mycology    - d) Phycology    - **Answer: b) Virology**    - Explanation: Virology is the scientific discipline that focuses on the study of viruses. 3. **Who discovered viruses?**    - a) John Ellerman    - b) Frederick Twort    - c) ...

CHEMISTRY MCQ PART 1 Here are 20 multiple-choice questions (MCQs) on chemistry with explanations for each answer: 1. **What is the atomic number of carbon?**    A) 6    B) 8    C) 12    D) 14    **Answer: A) 6**    Explanation: The atomic number represents the number of protons in an atom. Carbon has 6 protons. 2. ***What gas is often referred to as "laughing gas"?    A) Nitrous oxide    B) Carbon dioxide    C) Helium    D) Methane    **Answer: A) Nitrous oxide**    Explanation: Nitrous oxide, \( N_2O \), is commonly known as laughing gas due to its euphoric effects when inhaled. 3. **What type of bond is formed when electrons are shared between atoms?**    A) Ionic bond    B) Covalent bond    C) Metallic bond    D) Hydrogen bond    **A...