What is the initial state n1 for Balmer series?
For the Balmer series, the initial state n1 is 2 and n2 = 3, 4,… Balmer series The Balmer series... View Article
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Which hybridization has the maximum bond angle?
A maximum bond angle of 180° is possible for sp hybridization. Hybridization and its types Redistribution of the energy of... View Article
Give an example of a quantity is dimensionless?
Angle = length of Arc/ radius = L/L = 1 = [M0 L0 T0] What is a dimension of a... View Article
What is the basic structural unit of silicates?
The basic structural unit of silicates is SiO4-4. Silicates Silicates are the minerals containing silicon and oxygen in tetrahedral SiO... View Article
What is the percentage of lead in lead pencils?
There is no percentage of lead in lead pencils, or we can say zero percentage of lead. The pencils are... View Article
In Na2O, what is the oxidation state of oxygen?
In Na2O oxidation state of O is -2. Explanation The oxidation state of an atom (sometimes also referred to as... View Article
What is the other name for The Great Himalayas?
The correct answer is Option (A) – Himadri The Himalayas consist of three parallel ranges -the Shivalik hills, which comprise... View Article
What are the different methods of contraception?
The continuity of generation in the society is a common process. Each and everyone wants to see their next generation.... View Article
Distinguish between a parasite and a saprotroph.
Our planet earth comprises various life forms. Every organism has its own characteristics. Each one of the organism differs in... View Article
Can work done by a body be negative or positive?
Work is the product of the component of the force in the direction of the displacement and the magnitude of... View Article
Predict the molecular shape of the OF2 molecule.
According to VSEPR theory, OF2 geometry is linear. This is because of the repulsion between the lone pair electrons of oxygen and... View Article
Name the process by which Nylon-6,6 is obtained.
Hexamethylenediamine reacts with adipic acid to give Nylon-6,6, i.e. a condensation polymer formed by joining the monomer units with a... View Article
What is the colour of anhydrous copper sulphate?
The crystals of hydrated copper sulphate salt are blue in colour. When heated, the salt loses its water of crystallization... View Article
Which element have highest ionisation potential?
Noble gases have the highest ionization energies. Also, the removal of an electron from a stable state (octet or duplet)... View Article
What are some examples of amphoteric oxides?
Amphoteric oxides are the oxides that behave as both acidic and basic oxides. Amphoteric oxides have properties of acidic as... View Article
What is the oxidation number of Fe in K4Fe(CN)6?
The oxidation number or state of an atom/ion is the number of electrons an atom/ion that the molecule has either... View Article
Give an example of an ions which is mono-atomic.
Sodium (Na+) ion is mono-atomic since it consists of only one single charged atom. What is a monoatomic ion? A... View Article
What term is used to describe 14Si28 and 14Si29?
Isotopes are the atoms of the same element having the same atomic number but different mass numbers. Isotopes of an... View Article
Name the vitamins that are high in poultry feed.
Poultry feed has a higher level of vitamin A and K. Vitamin K Vitamin K plays a key role in... View Article
What is the dispersed medium in case of aerosol?
The dispersed medium in the case of aerosol is a gas. Dispersed phase and dispersed medium The phase that is... View Article
