Why do you think that there should be equitable distribution of resources? What forces would be working against an equitable distribution of our resources?
Equitable distribution of natural resources should be occur so that each and every species gets the same benefit which will be helpful for the survival. If the distribution of the natural resources are available in the equal amount and if any will competition then all the species would contain same position so that they can fight equally for their survival. So, there would be no biasedness (partiality) among the species.
Some forces are given that will be work against an equitable distribution of the resources like human greed, corruption (by government which favours the rich and the powerful people), lobby of rich and powerful people, reservation categories etc.
When a 12 V battery is connected across an unknown resistor, there is a current of 2.5 mA in the circuit. Find the value of the resistance of the resistor.
Outline a project which aims to find the dominant coat colour in dogs.
Draw the structure for the following compounds.
(i) Ethanoic acid (ii) Bromopentane*
(iii) Butanone (iv) Hexanal.
*Are structural isomers possible for bromopentane?
A hot plate of an electric oven connected to a 220 V line has two resistance coils A and B, each of 24 Ω resistance, which may be used separately, in series, or in parallel. What are the currents in the three cases?
How is the sex of the child determined in human beings?
(a) What property do all elements in the same column of the Periodic Table as boron have in common?
(b) What property do all elements in the same column of the Periodic Table as fluorine have in common?
Calculate the number of electrons constituting one coulomb of charge.
What is an homologous series? Explain with an example.
Why is variation beneficial to the species but not necessarily for the individual?
A man with blood group A marries a woman with blood group O and their daughter has blood group O. Is this information enough to tell you which of the traits – blood group A or O – is dominant? Why or why not?
Define 1 dioptre of power of a lens.
What are the components of the transport system in highly organised plants?
Give an example of a plant hormone that promotes growth.
Name the substance which on treatment with chlorine yields bleaching powder.
Outline a project which aims to find the dominant coat colour in dogs.
Which of the following property of a proton can change while it moves freely in a magnetic field? (There may be more than one correct answer.)
(a) mass (b) speed
(c) velocity (d) momentum
You must have seen tarnished copper vessels being cleaned with lemon or tamarind juice. Explain why these sour substances are effective in cleaning the vessels.
Calculate the number of electrons constituting one coulomb of charge.
What is a good source of energy?
The brain is responsible for
(a) thinking.
(b) regulating the heart beat.
(c) balancing the body.
(d) all of the above.