In the complex [Ni(H2O)2(NH3)4]2+ the no. of unpaired electrons is
Two unpaired electrons. Explanation [Ni(H2O)2(NH3)4]2+ the Ni in this complex is in +2 oxidation state, and there are 8 electrons... View Article
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What is the reason for two uncharged bodies to get charged on rubbing?
Two uncharged bodies on rubbing get charged because of friction. Explanation One of the rubbed material loses electrons and becomes... View Article
What are the products obtained after the combustion of methane called?
Carbon dioxide (CO2) and water (H2O) are obtained after the combustion of methane Combustion of Methane The process of burning a... View Article
What happens to the melting point of d-block elements across a period?
The melting point of transition elements increases to a maximum at d5 and decreases with the increase of atomic number... View Article
Give an example of a chemical element which forms a diatomic molecule.
Nitrogen has a unique ability to form pi- pi multiple bonds with itself. Diatomic elements Give an example of a... View Article
Give an example of a carbohydrate which exhibits lowest boiling point.
More the solute particles, the more in the elevation in boiling point. The lowest boiling point implies the least elevation... View Article
What is the purification method used for impure sample of Naphthalene?
An impure sample of Naphthalene can be purified by Sublimation. Sublimation Certain organic substances on heating change directly from a... View Article
What is the other name for aqueous solution of Potassium permanganate?
An aqueous solution of potassium Permanganate is known as Baeyer’s reagent. Alkenes on reaction with cold, dilute, an aqueous potassium... View Article
Hormone that triggers puberty in males is known as _______
Testosterone is the hormone that triggers puberty in males. Testosterone Testosterone is a hormone found in humans, as well as... View Article
Is the reaction between quick lime and waterendothermic or exothermic?
The reaction of calcium oxide with water to form calcium hydroxide is a highly exothermic reaction (gives off heat). Calcium... View Article
A lamp consumes 1000 J of electrical energy in 10 s. What is its power?
Answer: Given parameters Energy consumed by the lamp = 1000 J Time = 10 s We need to find the... View Article
What is violation of the Pauli exclusion principle?
According to the Pauli exclusion principle; No two electrons in an atom can have the same set of four quantum... View Article
Complete hydrolysis of XeF4 and XeF6results in the formation of XeO3. Explain
The complete hydrolysis of XeF6 and XeF4 gives XeO3 Complete hydrolysis of XeF6 XeF6 + 3H2O → XeO3+ 6HF XeF6... View Article
Which plant hormone promotes seed dormancy during environmental stress?
Abscisic acid promotes seed dormancy during environmental stress. Abscisic acid Abscisic acid is the growth inhibitor hormone in plants. Abscisic acid stimulates the growth and... View Article
How are the areas of study of evolution and classification interlinked?
Classification and evolution are highly interlinked fields of study. Classification Classification is influenced by evolution. The modern classification system is... View Article
What is Gibb’s Helmholtz equation? Explain with the help of applications.
The Gibbs–Helmholtz equation is a thermodynamic equation used for calculating changes in the Gibbs energy of a system as a... View Article
Which among the following is a Lewis acid? (a) NH3 (b) NH4+ (c) BF3 (d) H2O
Answer: (c) BF3 Lewis acids are electron-pair acceptors. BF3 is a Lewis acid Lewis acids In 1923 G. N. Lewis suggested another way... View Article
Which polymerisation occurs among the molecules containing double bonds?
Addition polymerisation occurs among molecules containing double bonds. Addition polymerisation Addition polymerisation is also called chain growth polymerisation. Alkenes are... View Article
What would happen to the life of a cell if there was no Golgi apparatus?
Answer: It is a membrane-bound organelle mainly composed of a series of flattened, stacked pouches called cisternae. The Golgi body... View Article
Which is the active nitrating agent during the nitration of benzene?
During the nitration of benzene, the active nitrating agent is NO2+. What is a Nitrating mixture? Nitrating mixture is the... View Article
