Metal which are preserved in kerosene - Sodium, Lithium and Potassium. Lustrous coloured non-metal - Iodine and Diamond . They have a slight... View Article
Solder is an alloy that is mainly made up of tin and lead. Lead (Pb) and tin (Sn) are the commonly used materials for soldering because of their... View Article
Acid rain occurs when sulphur dioxide (SO2) and nitrogen oxides (NOX) are emitted into the atmosphere and transported by wind and air currents.... View Article
Copper glance a mineral consisting of cuprous sulphide, Cu2S. Zinc blend is ZnS. The mentioned copper glance and zinc blend are ores which can be... View Article
Onshore wind is the one that blows from the sea towards the land. Whereas, offshore wind is the type of wind that blows from the land towards the... View Article
Nitrogen shows maximum covalency of 4 whereas other heavier elements of the group show higher covalency because of the absence of d orbitals in... View Article
April 5th, 2021, PIB:- Download PDF Here TABLE OF CONTENTS 1. Chenab Bridge 2. Babu Jagjivan Ram 3. International Virtual Election Visitors... View Article
Answer: (c) Salt, sand Diffusion is defined as the movement of molecules or atoms from a region of high concentration to a region of low... View Article
Gases have the highest compressibility. Air has more intermolecular spaces compared with water and solids as well as in the gaseous medium.... View Article
The reactivity series allows us to predict how metals will react. A more reactive metal will displace a less reactive metal from a compound. In a... View Article
Wood is not a pure substance but a homogenous mixture because it is composed of compounds such as cellulose, hemicelluloses, and lignin which are... View Article
The n factor of salts is defined as the number of moles of electrons exchanged (lost or gained) by one mole of the salt. Na2CO3 ⇌ 2Na+ +... View Article
The SI unit for electric dipole moment is the coulomb-meter. The separation of charges in any system leads to dipole moment . Dipole moment... View Article
The hybridization in the central atom of H30+ is sp3 and geometry is trigonal pyramidal. Hybridization depend upon the number of Bond Pairs and... View Article
The cations of the less electropositive metals like Pb, Hg, Sb and Cu may be reduced without the use of any additional reducing agent. Elevated... View Article
Upthrust is also known as buoyant force. It is upward force acting on a body is partially. or fully immersed in a liquid. The S.I unit of... View Article
Calamine is Zinc Oxide with a small proportion of ferric oxide. It is used in lotion form to treat skin problems or insect bites that cause... View Article
Ultrasonic waves are longitudinal waves. Hence, it cannot be polarized because, the motion of the particles is already in one dimension that is... View Article
