Mercury is a liquid that is transported in iron containers, as iron does not amalgamate with mercury. Only iron and platinum do not form amalgams... View Article
Vaporisation is the process that takes place in every part of the environment. Similarly, the vaporisation that helps water kept in an earthen... View Article
Answer: According to Dalton's atomic theory, chemical reactions involve the reorganization of atoms. In 1808, the English physicist and... View Article
Answer: (1) CH3COOH CH3COOH → CH3COO- + H+ CH3COOH is a weak acid because it ionizes only partially in aqueous solution to form H+ and CH3COO-... View Article
Answer: Redox reactions are oxidation-reduction chemical reactions in which the reactants change their oxidation states. . It can be noted that... View Article
Resonance is defined as a phenomenon when the applied periodic force's frequency is equal to the natural frequency of the body. The body readily... View Article
The melting of ice cream is a physical change. Liquid ice-cream solidifies again on freezing without change in chemical properties. A change in... View Article
The general outermost shell electronic configuration for Actinoids is [Rn] 5f1-146d0-17s2. Actinoids or actinides are 15 consecutive chemical... View Article
Two safety measures commonly used in electric circuits and appliances are: An electric fuse is connected in series. It protects the circuit... View Article
10A wire has a higher resistance The resistance of a given length of flat fuse wire is inversely proportional to its thickness. Therefore,... View Article
Solution: A mole is defined as the amount of a substance that contains exactly 6.02214076 X1023 elementary entities of the given substance. A... View Article
Electron rich hydrides have excess electrons that are present as lone pair. A pair of electrons occupying an orbital in an atom or molecule and... View Article
Consuming food rich in carbohydrates and fats is not a healthy practice because it may lead to obesity. Carbohydrates are the main source of... View Article
Nitrosomonas convert ammonia into nitrates by a process called nitrification. It is performed in two steps - nitrite formation and nitrate... View Article
The difference in the electronegativities of interhalogen compounds polarises the bond. Thus, due to polarity and weak bonding, interhalogen... View Article
Haemoglobin is the respiratory pigment that transports oxygen to the body cells for cellular respiration. Therefore, deficiency of haemoglobin in... View Article
Speeds of source and listener. The Doppler effect can be described as the effect produced by a moving source of waves. There is an apparent... View Article
The focal length of a spherical mirror is equal to half the radius of curvature of that mirror. The radius of curvature, R= 32 cm Radius of... View Article
The acceleration of an object is inversely proportional to the mass of the object. Newton's second law of motion can be formally stated as... View Article
If Z = 3, i.e., atomic number is 3. Its electronic configuration is 2, 1, i.e. (Z = 3) = 1s2 2s1 Hence, the valency of the element is 1 (since... View Article