Tin reacts with excess sodium hydroxide to form sodium stannite (Na2SnO2), sodium stannate(Na2SnO3) and hydrogen gas. Sn + 2NaOH → Na2SnO2 + H2... View Article
Carolus Linnaeus introduced the binomial nomenclature system for naming organisms scientifically. Binomial nomenclature is the biological... View Article
Answer: The term isotope mainly corresponds to the variation in the atomic mass or weight of an element. It may also refer to variations of a... View Article
Hydra reproduces by means of budding, which is a form of asexual reproduction. Budding is characteristic of a few unicellular organisms. Some... View Article
1 part of concentrated nitric acid and 3 parts of concentrated hydrochloric acid. Aqua regia is a mixture of hydrochloric acid (HCl) and nitric... View Article
All plants, animals and human beings depend on their surroundings. For plants, animals and human beings to survive, they must interact with the... View Article
Vinegar is a dilute aqueous solution of ethanoic acid. The main component of vinegar is acetic acid, which gives a sour taste and pungent... View Article
The colouration of the skin is provided by melanin. Melanin is a complex polymer derived from the amino acid tyrosine. Melanin is responsible... View Article
Answer: Respiration is the mechanism by which the nutrients we absorb are converted into usable energy. The cell, as we know, is the structural... View Article
Phosphinic acid is H3PO2. A phosphorus oxoacid consists of single pentavalent phosphorus covalently bound via single bonds to two hydrogens and... View Article
The main difference between pteridophytes and phanerogams is that pteridophytes are seedless and flowerless vascular plants, while phanerogams... View Article
The intensity of a sound wave is defined as the amount of sound energy passing through a unit area per second. The intensity of sound is given... View Article
The metallic character of group 14 elements increases from top to bottom because removing the electron becomes easier on moving down the group.... View Article
Grinding, tearing, cutting are examples of physical changes. There is no change in the chemical composition in these processes. Physical... View Article
Only one monomer repeatedly adds to give additional polymers like the monomer of polythene i.e.addition polymer is CH2=CH2 Polymers are... View Article
Cardiac muscles are found only in the heart and are self-stimulating, which has an intermediate speed of contraction and energy requirement. This... View Article
Xylem in plants helps in the transportation of water and minerals from roots to leaves. Cohesion tension theory says that the movement of water... View Article
Plasma is the fluid matrix in the blood consists of water, ions, glucose, proteins, hormones etc. Plasma is the clear, straw-coloured liquid... View Article
Adenine always pairs up with Thymine, while Guanine pairs up with Cytosine The DNA sequence is usually represented as a string of letters.... View Article
