Elements in the same group have the same number of valence electrons. Elements in the same group are those that are in a single vertical line... View Article
Defects in metal blocks do not allow ultrasound to pass through them, and they are reflected. This fact is used to detect defects in metal... View Article
Entropy is the measure of randomness. If the system is disordered, the randomness increases and consequently, entropy increases and vice versa.... View Article
Answer: The magnetic field is a field generated by the electric charge or magnet in the motion. The magnetic field is the area around the... View Article
Among the 3d transition series, the ionization enthalpy increases gradually within the period, but the relative increase is not sharp. In the... View Article
O2 is paramagnetic It is paramagnetic because it has two unpaired electrons. The atomic orbitals of the O atoms overlap to form the σ and π... View Article
(i) Class Pisces: This class includes fish such as Scoliodon, tuna, rohu, shark, etc. These animals mostly live in water. Hence, they have... View Article
Digestion is the process of breaking large, insoluble food molecules into smaller molecules for absorption into the bloodstream. This process... View Article
In Tyndall effect the colloidally suspended particles trace out the path of a strong beam of light because of scattering of light by the... View Article
Limiting molar conductivity of strong electrolytes is calculated using Ë„m vs (c)½ graph by extrapolating the graph to c = zero For strong... View Article
In a hydrogen bond, hydrogen carries a partial positive charge and the electronegative element carries a partial negative charge. Hydrogen... View Article
Mendel is known as the father of genetics. Mendel’s laws are Law of Dominance, Law of Segregation and Law of Independent Assortment. These laws... View Article
Barium Chloride on dissociation gives 2 moles of Chloride ions and one mole of Barium ions. Hence, the total number of moles of ions in solution... View Article
The conventional direction of electric current is from positive to negative terminal. Or, in other words, from higher potential to lower... View Article
Answer: A line can be defined as a straight set of points that extend in opposite directions. It has no ends in both directions and has no... View Article
Answer: In the presence of sunlight, green plants use photosynthesis to synthesize nutrients from carbon dioxide and water. It includes... View Article
Gamma rays. This is because Gamma rays have immense penetrating power. So it can penetrate the inner cells of the body, ionize the cells. It... View Article
The motion of electrons in an atom is governed by electrostatic force. Every object in the universe attracts every other object with force... View Article