What is the reaction taking place in the fuel cell?
Answer: A fuel cell can be defined as an electrochemical cell that generates electrical energy from fuel via an electrochemical... View Article
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Is the optical centre always at the centre of lens?
Only if both the curved surfaces are symmetrical, optical centre will be at the centre.
Which is the bottom and swollen part of the carpel?
Ovary is the swollen bottom part of the flower which contains the female gamete.
What are polymers prepared in laboratories known as?
Polymers are large molecules made by bonding a series of building blocks. The polymers which are prepared in the laboratories are... View Article
Identify ‘X’ in the reaction: 2HCl + CuO †’ X + H2O
Acids react with metallic oxides to form salt and water.CuO + 2HCl CuCl2 + H2O
What is the speed of the Earth during a revolution?
30km/sec is the speed of the earth during a revolution.
Which season is marked by the onset of the monsoon?
Rainy season is marked by the onset of the monsoon.
Which crops occupy the largest area in the country?
Kharif occupies the largest area in the country.
Who gave the double strand helix structure for DNA?
Watson and crick gave the structure for DNA.
What is the phenotypic ratio of a monohybrid cross.
0.125694444444444
How to demagnetize a permanent magnet using current?
To demagnetise a permanent magnet place it inside a solenoid, pointing East-West, through which an alternating current is flowing. While... View Article
What would fall quicker, a feather or a hammer? Why?
A hammer would fall quicker than a feather because the aerodynamic resistance offered by the feather is comparitively greater than... View Article
How do you calculate the linear density of a string?
By dividing the mass of the string by its length to get linear density in kilograms per meter.
What happens when S reacts with hot and conc. H2SO4?
When S reacts with hot and conc. H2SO4 it forms SO2. S + 2H2SO4 (conc) †’ 2SO2 +2H2O
What is the effect of dryness of air on evaporation?
Dryness of air i.e. low humidity of air increases the rate of evaporation of water.
Give an example of reaction in which gas is evolved.
When limestone and HCl react with each other, carbon dioxide gas is evolved.
In photorespiration, what is the function of RuBisCO?
RuBisCO is the most plentiful enzyme present in the world. The full form of RuBisCO is Ribulose-1,5-bisphosphate carboxylase oxygenase. It... View Article
Write the factors which could lead to the rise of a new species
Species is defined as a group of organisms that consist of similar individuals capable of interbreeding or exchanging genes among... View Article
What role does the uvula play in human buccal cavity?
While swallowing, the uvula and the soft palate move together to close off the nasopharynx, and prevent food from entering... View Article
Why are alkynes more acidic than alkanes and alkenes?
Due to the presence of more s-character, the alkynes are more electronegative. Thus, in Ethyne, hydrogen atoms can be liberated... View Article
