Revision Of 7th Online Test For JEST Science& ECT Science By Wahab

James Chadwick is credited with the discovery of the neutron in 1932. He conducted experiments that led to the identification of a neutral particle with a mass similar to that of a proton. This discovery was significant as it provided a better understanding of atomic structure and helped pave the way for the development of nuclear energy and atomic weapons. Therefore, the statement "Neutrons were discovered by James Chadwick" is true.

Mitochondria are called the powerhouses of the cell because they are responsible for producing the majority of the cell's energy in the form of adenosine triphosphate (ATP) through the process of cellular respiration. They contain their own DNA and can replicate independently, suggesting that they were once free-living organisms that formed a symbiotic relationship with eukaryotic cells. This unique ability to generate energy makes mitochondria essential for the functioning of cells and is why they are often referred to as the powerhouses of the cell.

The statement "Teacher is pillar of the nation" implies that teachers play a crucial role in the development and progress of a nation. Teachers are responsible for imparting knowledge, shaping the minds of students, and preparing them to become responsible citizens. They contribute to the overall growth of society by educating and guiding individuals. Therefore, it can be concluded that teachers are indeed the pillars of a nation.

A bridge is a networking device that connects two similar network segments, allowing them to communicate with each other. It operates at the data link layer of the OSI model and uses MAC addresses to forward data packets between the segments. By connecting these segments, a bridge helps to extend the network and improve overall network performance. Therefore, the statement "Bridge connects two similar network segments" is true.

"Red" is an adjective because it describes the color of an object. Adjectives are words that modify or describe nouns, providing additional information about their qualities or characteristics. In this case, "red" is used to describe the color of an object, making it an adjective.

Volta is credited with inventing the battery. He developed the first electrochemical cell, known as the Voltaic pile, in 1800. This invention was a significant breakthrough in the field of electricity and laid the foundation for the development of modern batteries. Volta's invention paved the way for numerous applications of electricity and revolutionized various industries, including telecommunications, transportation, and electronics.

Watched is suitable.. any verb but suits sentence but it must be 3rd form

According to John Dewey, schools must prepare students for present life. This means that education should focus on equipping students with the knowledge, skills, and values that are relevant and applicable to the current society and the challenges they may face in their daily lives. Dewey believed that education should be practical and connected to real-life experiences, enabling students to actively engage with the world around them and become active participants in society. By preparing students for present life, schools can help them develop the necessary competencies to navigate and contribute to the contemporary world.

The sun is a star. Stars are massive celestial bodies that emit light and heat due to nuclear reactions happening in their core. The sun, being the closest star to Earth, provides us with light and heat, making life on our planet possible. It is a main-sequence star, specifically a G-type main-sequence star, and belongs to the Milky Way galaxy. Its energy is generated through the process of nuclear fusion, where hydrogen atoms combine to form helium, releasing vast amounts of energy in the process.

Wind energy is indeed kinetic energy. Wind turbines convert the kinetic energy of the wind into mechanical energy, which is then used to generate electricity. This is done through the rotation of the turbine blades, which are moved by the force of the wind. Therefore, the statement "Wind energy is the kinetic energy" is correct.

FTP is an abbreviation for File Transfer Protocol. It is a standard network protocol used for transferring files between a client and a server on a computer network. FTP provides a simple and reliable way to transfer files, allowing users to upload, download, and manage files on a remote server.

Electrons

70% of the Earth's surface is covered by water. This means that a significant portion of the Earth is made up of oceans, seas, and other bodies of water. Water is essential for life and plays a crucial role in various ecosystems and weather patterns. The vast amount of water on Earth also helps regulate the planet's temperature and climate.

The given answer, Maldev, is incorrect. There is no country called Maldev. Therefore, the correct answer is not available.

Nitrous oxide, commonly known as "laughing gas," is the correct answer. Nitrous oxide is a colorless and odorless gas that is commonly used as an anesthetic in dentistry and surgery. It earned the nickname "laughing gas" because of the euphoric and giggly effects it can produce when inhaled. Nitrogen, hydrogen, and helium are different gases and do not have the same properties or uses as nitrous oxide.

No it's collective noun

HTML stands for HyperText Markup Language. It is a standard markup language used for creating web pages and applications. HTML uses tags to structure the content and define the layout and appearance of the web page. The correct answer is "HyperText Markup Language".

Its USA & CANADA

In photosynthesis, plants use sunlight, water, and carbon dioxide to produce glucose and oxygen. Water is the source of oxygen in photosynthesis. During the light-dependent reactions of photosynthesis, water molecules are split, releasing oxygen as a byproduct. This oxygen is then released into the atmosphere, while the hydrogen atoms from water are used to generate energy and produce glucose. Therefore, water serves as the source of oxygen in photosynthesis.

Hydrogen is the most abundant element in the universe because it is the primary component of stars, making up about 75% of their mass. It is also found in large quantities in interstellar space. Additionally, hydrogen is a key component of water and organic compounds, making it essential for life as we know it.

Local area network

Uniform resource locator

Yes it right

Antonio Guterres, the Secretary General of the United Nations, belongs to Portugal.

President Donald Trump was the presidential nominee of the Republican party. This is because he ran as a candidate for the Republican party in the 2016 presidential election and won the party's nomination. He then went on to become the President of the United States as the Republican party's candidate.

Its a battery..

He elected on 1 January 2017

The production of sweat and sebum is related to the skin. Sweat is produced by sweat glands in the skin and helps regulate body temperature by cooling the body through evaporation. Sebum is an oily substance produced by sebaceous glands in the skin and helps moisturize and protect the skin. Therefore, the correct answer is skin.

Three

Ampere

Meteorology is the study of the atmosphere. It involves the examination and understanding of various atmospheric phenomena such as weather patterns, climate, and the composition of the air. Meteorologists analyze and predict weather conditions by studying atmospheric pressure, temperature, humidity, and wind patterns. They also investigate the effects of atmospheric conditions on the Earth's surface and its inhabitants. Therefore, the correct answer is "Atmosphere".

0.039℅

It is called blue mosque.

Proteins are made from amino acids by the process of dehydration synthesis. In this process, two amino acids are joined together by removing a water molecule. This reaction occurs repeatedly to form a long chain of amino acids, which then folds into a protein. Hydrolysis, on the other hand, is the opposite process where proteins are broken down into amino acids by adding a water molecule. Therefore, dehydration synthesis is the correct answer as it describes the process of building proteins from amino acids.

The Louvre museum is considered the largest museum in the world because of its vast collection of art and historical artifacts. It is located in Paris, France, and spans over 782,910 square feet. The museum houses approximately 38,000 objects from prehistoric times to the 21st century, including famous masterpieces like the Mona Lisa. Its extensive collection, impressive size, and iconic status make the Louvre museum the largest and most renowned museum globally.

Glucose

The South Pole of the Earth is located in Antarctica. Antarctica is the southernmost continent on Earth, and it is mostly covered in ice. The South Pole is specifically located on the continent of Antarctica, at the southernmost point. Norway is a country in Europe and is not located at the South Pole. The Arctic Ocean and the Pacific Ocean are also not the correct locations for the South Pole.

Pedagogy refers to the method or practice of teaching, specifically in relation to children. It involves leading and guiding the child in their educational journey, helping them to understand and learn. This term encompasses the various strategies, techniques, and approaches used by educators to facilitate effective learning and development in children.

The correct answer is Tokyo. The 2020 Olympics were originally scheduled to be held in Tokyo, Japan. However, due to the COVID-19 pandemic, the games were postponed to 2021. Tokyo was chosen as the host city for the Olympics because of its modern infrastructure, cultural significance, and strong commitment to hosting large-scale international events.

The correct answer is 21,196. This is the approximate length of the Great Wall of China. The wall stretches across northern China and is considered one of the most impressive architectural feats in history. It was built to protect China from invasions and spans over various terrains such as mountains and deserts. The Great Wall is a UNESCO World Heritage Site and attracts millions of visitors each year.

"Worm"

Cairo is also called The City of 1,000 Minarets because it is known for its numerous mosques and their distinctive minarets. The city is home to many historic mosques with beautiful architectural designs, and the minarets are a prominent feature of these structures. The nickname "The City of 1,000 Minarets" reflects the rich Islamic heritage and cultural significance of Cairo.

Observation > Hypothesis > Experiments

Deductive reasoning is the correct answer because it involves drawing a conclusion based on a set of given statements or premises. In this type of reasoning, the conclusion is guaranteed to be true if the premises are true. The given statements are viewed as supplying strong evidence for the truth of the conclusion, which aligns with the principles of deductive reasoning.

By "distillation"

The correct answer is Nov 4 -2016. This is the date when the Paris Agreement officially entered into force. The Paris Agreement is an international treaty aimed at combating climate change by limiting global warming to well below 2 degrees Celsius above pre-industrial levels. It was adopted by the United Nations Framework Convention on Climate Change (UNFCCC) in December 2015 and required at least 55 countries, representing at least 55% of global greenhouse gas emissions, to ratify it in order for it to enter into force. This milestone was reached on November 4, 2016, making it a significant date in the global effort to address climate change.

Mitochondria contain their own supply of DNA. This is because mitochondria are considered the "powerhouses" of the cell and are responsible for producing energy through a process called cellular respiration. They have their own set of DNA, known as mitochondrial DNA (mtDNA), which is separate from the DNA found in the cell's nucleus. This mtDNA is essential for the production of proteins and enzymes needed for energy production.

The University of Bologna is considered the oldest university in the world because it was founded in 1088. It has a long history of academic excellence and has been a center of learning for over 900 years. The university has played a significant role in the development of higher education and has produced many notable scholars and intellectuals throughout its existence.

Columb

The position of an element in the Periodic Table is determined by its proton number. This is because the proton number, also known as the atomic number, represents the number of protons in the nucleus of an atom. Each element has a unique atomic number, which determines its place in the Periodic Table. The Periodic Table is arranged in order of increasing atomic number, allowing elements with similar properties to be grouped together. Therefore, the correct answer is Proton.