Give an example of combination reaction between two elements.
Hydrogen and oxygen in elemental form combine to form water. Combination reaction It is defined as a chemical reaction in... View Article
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A small portion of vas deferens is removed in male or female?
Vasectomy is performed in males Vasectomy Vasectomy also called male sterilization is a surgical procedure meant to protect against pregnancy... View Article
Give an example of an animal does not belong to Class Pisces.
The Whale does not belong to Class Pisces. It belongs to the class Mammalia. Features of Pisces They are exclusively... View Article
How does ciliated epithelium differ from columnar epithelium?
Columnar epithelium The columnar epithelium has cells that are similar to the pillar to the column. The nuclei of these... View Article
At what temperature does evaporation of a liquid takes place?
Evaporation of a liquid takes place at a temperature below the boiling point. Evaporation Evaporation happens when a liquid substance... View Article
How to obtain orange red dye from Benzene diazonium chloride?
Benzene diazonium chloride forms orange, red dye with Resorcinol, Cresol and Phenol. Benzenediazonium chloride is a colourless solid and has... View Article
Decreasing order of reactivity of alkyl halide is: RCl, RI, RBr
Decreasing the order of reactivity of alkyl halide is RI > RBr > RCl. Alkyl halides Alkyl Halides are compounds... View Article
Which chemical is responsible for the depletion of ozone hole?
Chlorofluorocarbons react with ozone molecules resulting in an ozone hole. Ozone depletion Human-made compounds such as chlorofluorocarbons (CFCs), hydrofluorocarbons (HFCs)... View Article
What are the thin cytoplasmic projections of the cyton called?
Dendrites What are neurons? Neurons (also called neurones or nerve cells) are the brain and nervous system’s fundamental units, the... View Article
Which radioactive radiations have the least penetrating power?
Alpha radiations have the least penetrating power as they are massive in nature. Gamma rays are the most penetrating of... View Article
What is the expression used to calculate the cell constant G’?
The expression used to calculate the cell constant G’ is G’ = I/A R = ρ 1/A = 1/kA l/A... View Article
Why does Sodium react more vigorously with water than Lithium?
Sodium and Lithium both are alkali metals. They have some common properties, but few properties make the two elements different.... View Article
Heating together sodium ethoxide and ethyl chloride will give:
The reaction represents Williamson’s synthesis. An alkyl halide is to be primary, so a nucleophilic substitution reaction occurs. Because with... View Article
By which specialized structure the larva of mosquitoes breath?
Larva of mosquito float on the surface of water and breath through a specialized tube called siphon tube. Explanation A... View Article
How many quantum numbers are required to identify the orbital?
The set of numbers used to describe the position and energy of the electron in an atom is called quantum... View Article
Give an example of a physical quantity which is dimensionless.
Strain = Change in dimension/Original Dimension = [M0 L0 T0] What is strain? An object or medium under stress becomes... View Article
Give an example of the compound which has one isopropyl group.
2-methyl pentane The isopropyl group —CH(CH3)2 is the simplest structural unit that contains a tertiary carbon. Isopropyl has the specific... View Article
What happens when hydrogen chloride gas is dissolved in water?
Hydrogen chloride gas on dissolving in water produces strong monobasic acid. Hydrochloric acid is formed. Hydrogen chloride gas is not... View Article
How can anyone differentiate crystalline and amorphous solids?
There is a regular arrangement of particles in a crystalline solid that will result in a well-defined crystal array. In... View Article
What is the term used for the solution that obeys Raoult’s law?
Raoult’s law states that a solvent’s partial vapour pressure in a solution (or mixture) is equal or identical to the pure... View Article
