bioneethub.in A sensitive device called a moving coil galvanometer is used to measure tiny electric currents. It functions according to the idea that a current-carrying coil rotates when it encounters a torque in a magnetic field. The device can detect and quantify small currents with high precision since this rotation is proportional to the current passing … Read more
Average Velocity is defined as the change in the position or displacement of object divided by the time interval in which the displacement occurs. Average Velocity V = Change in position / Total time taken = x2 – x1 / t2 – t1 Average Speed is defined as the total path length travelled divided by … Read more
One kind of force that is essential to the composition and characteristics of many compounds is hydrogen bonding. It happens when an electronegative atom with a single pair of electrons attracts a hydrogen atom that is covalently bound to a highly electronegative atom, such as nitrogen (N), oxygen (O), or fluorine (F). Type of Hydrogen … Read more
Introduction:- Mole is a unit which represents 6.022 x 1023 particles ( atoms, molecules or ions etc) irrespective of their nature. The number 6.022 x 1023 is called Avgadro’s number and is represented by NA . The calculation of this number is based on the Faraday’s laws of electrolysis. A mole also represents gram molecular … Read more
Introduction:- Rocket Propulsion:- The propulsion of a rocket is an example of momentum of conservation. In a rocket, gases at high temperature and pressure, are produced by the combustion of fuel. They escape with a large constant velocity through a nozzle. The large backward momentum of the gases imparts an equal forward momentum to the … Read more
1. Which of the following is the powerhouse of the cell? (a) Nucleus (b) Mitochondria (c) Ribosome (d) Lysosome Answer: (b) Mitochondria Explanation: Mitochondria is known as the powerhouse of the cell because they generate ATP, through cellular respiration. 2. The organelle responsible for photosynthesis in plants is: (a) Mitochondria (b) Chloroplast (c) Golgi apparatus … Read more
1.Which of the following is not a base unit in the International System of Units (SI)? (a) Meter (b) Kilogram (c) Newton (d) Second Answer: (c) Newton Explanation: Newton is a derived unit for force, but meter, kilogram, and second are base units. 2. The SI unit of electric current is: (a) Ampere (b) Volt … Read more
1. Who discovered the electron?a) J.J. Thomsonb) Rutherfordc) Bohrd) Dalton Answer: a) J.J. ThomsonExplanation: J.J. Thomson discovered the electron in 1897 through his experiments with cathode rays. 2. Which experiment led to the discovery of the nucleus?a) Cathode ray experimentb) Oil drop experimentc) Gold foil experimentd) Alpha particle scattering experiment Answer: d) Alpha particle scattering … Read more
Introduction:- Mendelian disorders are genetic abnormalities produced by mutations in a single gene. They are named after the father of genetics, Gregor Mendel. These diseases have four distinct inheritance patterns: X-linked dominant, X-linked recessive, autosomal dominant, and autosomal recessive. Mendel’s research on pea plants in the 19th century established the basis for our current understanding … Read more
Introduction Acquired Immunodeficiency Syndrome (AIDS) remains one of the most pressing worldwide health issues of the twenty-first century. Despite breakthroughs in medicine and public health, AIDS continues to claim lives, affecting millions of people worldwide. Combating the AIDS epidemic requires understanding its causes and developing effective prevention efforts The causes of AIDS, effective AIDS preventive … Read more