The vector quantity identifies a physical quantity if it has both magnitude and direction. If the physical quantity has only magnitude, then the... View Article
2 Na (s) + Cl 2 (g) → 2 NaCl (s) NaCl is salt of strong acid and strong base. It is highly soluble in water. A combination reaction is one... View Article
The average atomic mass of a chemical element depends on the atomic masses of its naturally occurring isotopes. The identity of a chemical... View Article
Air is a mixture but not compound. Its constituents can be separated. For example: oxygen, nitrogen etc. by physical process. Air shows... View Article
Ionic bond is much stronger than covalent bond because it involves complete transfer of electrons because of which there is formation of cation... View Article
A regular pentagon has 5 line of symmetry. The number of lines of symmetry in a regular polygon is equal to the number of sides. Therefore, a... View Article
A compound is a molecule made of atoms from different elements. All compounds are molecules, but not all molecules are compounds. Properties of... View Article
Molecular mass is a measure of the mass of a molecule in atomic mass units, or amus. The molecular mass of a molecule is the sum of all the... View Article
The total number of electrons that an atom either gains or loses in order to form a chemical bond with another atom is said to be an oxidation... View Article
Centrosome and centromere are structures involved in cell division. Centrosomes occur only in animal cells, where they regulate the cell cycle... View Article
400 is a perfect square and is an irrational number. The square root of a perfect square will equal a whole number. Therefore,√400 = 20... View Article
5/6 can be written as 5÷6 The result will be a decimal: 5/6=0.8333333... The first two decimal places represent hundredths. 0.833333...= 83.333/... View Article
The heart is a muscular organ having the size of a closed fist that functions as the body’s circulatory pump. The heart is located in the... View Article
We know that sin(a+b)=sina⋅cosb+cosa⋅sinb Therefore, sin(105)=sin(60+45) hence, we have sin105=sin(60+45)=sin60 x cos45+cos60 x sin45 = √3/2 .... View Article
Metallic character is the name given to the set of chemical properties associated with elements that are metals. Most metals are malleable and... View Article
Yes.one joule per second is equivalent to one watt. Power=work done/ time 1 watt = 1 joule / 1 second W = J / s The SI units for work and time... View Article
