The chemical reactions which proceed with the evolution of heat energy are called exothermic reactions. Heat evolved is expressed in Joules (J) or kilo Joules (kJ). All combustion...
The rate of a chemical reaction is defined as the change in the concentration of the reactant or product per unit time. The Factors affecting the rate of...
In a physical change, substances don’t change; only their molecules are rearranged. No new substance is formed in a physical change. In Chemical Change, a chemical reaction takes...
Atomic Number is the number of Protons in nucleus of an Atom. Mass number of an element is the number of nucleons viz. Neutrons and Protons. The atomic...
Matter can exist in at least four fundamental states viz. solid, liquid, gas and plasma. There are other states also such as Bose–Einstein condensate, quark-gluon plasmas etc. which...
Indian Computer Emergency Response Team (CERT-In) has signed cybersecurity agreement with its counterparts in Malaysia, Singapore and Japan. In this regard, the Union Cabinet chaired by the Prime...
1. Which of the following states has been celebrating the Red Panda Winter Festival 2016? [A]Nagaland [B]Meghalaya [C]Sikkim [D]Assam Answer: Sikkim The Red Panda Winter Festival 2016 was...
North Korea, officially known as the Democratic People’s Republic of Korea (DPRK), is a sovereign state in East Asia occupying the northern half of the Korean Peninsula. It...
South Korea, officially known as the Republic of Korea (ROK), is a sovereign state in East Asia occupying the southern portion of the Korean Peninsula. It shares a...
