The magnetism acquired by a magnetic material when it is kept near (or in contact with) a magnet, is called induced magnetism Magnetism is... View Article
The anomalous expansion of water enables aquatic animals to survive in a reservoir where the surface layer of water has frozen. This helps... View Article
A desiccator is an airtight glass vessel with a suitable drying agent, anhydrous calcium chloride placed at the bottom of the vessel. A... View Article
Galvanizing is a process in which iron or steel is coated with a thin layer of zinc to protect them from corrosion. Explanation: Corrosion is... View Article
The restoring force in a simple harmonic motion is maximum in magnitude when the particle is instantaneously at rest. Simple Harmonic Motion or... View Article
Positively charged ions (cations) get attracted to the cathode and gain electrons from it to form a neutral atom. The negatively charged... View Article
Joseph Priestley in 1774, performed an experiment in which Red mercuric oxide (HgO) was heated by focusing Sun's rays on it using a convex lens.... View Article
Answer: Radioactivity is defined as a phenomenon in which certain heavy unstable nuclei spontaneously disintegrate by emitting certain invisible... View Article
Answer: Heating of the Earth surface due to radiation of the Sun trapped by carbon dioxide and water vapour in the atmosphere is called as Green... View Article
Answer: The smallest unit which has an independent existence and exhibits all the properties of the substance is called a molecule. A molecule... View Article
Answer: Bond angle is defined as the average angle between orbitals containing bonding electron pairs around the central atom in a molecule.... View Article
Answer: Muscular tail, streamlined body shape, scaly skin and two-chambered heart are the characteristic features of class Pisces. Pisces are... View Article
An observer moves towards a stationary plane mirror at a speed of 4 m/s We need to find out the speed of image with respect to mirror Let the... View Article
Answer: The temperature of oxyacetylene flame is about 3000oC and that of oxyhydrogen flame is approximately 2800oC. Through the combustion... View Article
Answer: Some salts while crystallizing out from their aqueous solution, unite with a definite quantity of water which is known as water of... View Article
Answer:Â When acetic acid reacts with ethyl alcohol, we add Conc H2SO4 it acts as dehydrating agent and the process is called esterification.... View Article
Answer: The process through which a solid directly changes to a gaseous state without passing through a liquid state is known as sublimation.... View Article