Chemical properties of astatine in comparison with other halogens is known very little to us. Why?

Why is iodine solid, but other halogens are not ?

Non reacting gases have a tendency to mix with each other. This property is known is :

Why do we sometimes get abnormal molecular masses of the substance by using colligative properties of the solution ? State the factors with suitable example which bring abnormality in the results thus obtained.

Why the properties of third transition series are very similar to second transition series ?

Define the terms osmosis and osmotic pressure. What is the advantage of using osmotic pressure as compared to other colligative properties for the determination of molar masses of solutes in solutions ?

Sumit somewhere heard about biopiracy. To know more about this, he discussed it with his uncle who was a professor of intellectual property rights. Uncle told him that it is the use of bioresources by multinational companies and other organisations without proper authorisation from the countries and people concerned and without any monetary or social advantage to the source country. Why is biopiracy considered unethical?

Sumit somewhere heard about biopiracy. To know more about this, he discussed it with his uncle who was a professor of intellectual property rights. Uncle told him that it is the use of bioresources by multinational companies and other organisations without proper authorisation from the countries and people concerned and without any monetary or social advantage to the source country. Name the plants (atleast two) on which such controversies occurred in India.

Sumit somewhere heard about biopiracy. To know more about this, he discussed it with his uncle who was a professor of intellectual property rights. Uncle told him that it is the use of bioresources by multinational companies and other organisations without proper authorisation from the countries and people concerned and without any monetary or social advantage to the source country. Explain bioethics with reference to genetic engineering.

Carbohydrates are commonly found as starch in plant storage organ . Which of the following five properties of starch (i-v) make it useful as a storage material ? (i) easily translocated (ii) chemically non-reactive (iii)easily digested by animals (iv) osmotically inactive (v) synthesized during photosynthesis The useful properties-are:

Why is HF a liquid whereas other hydrides of halogens are gases?