Consider the following statements:

1. Ore is heated generally in the absence of air, then the process is called calcination.

2. Ore is heated generally in the presence of air, then the process is called roasting.

3. Reduction of oxide with carbon at high temperature is called smelting.

Which of the statements given above are correct?

Consider the following statements

$1$. Azolla is an aquatic fern.

$2$. Equisetum contains silica spores.

$3$. Sphagnum, also called peat moss, is used in transportation.

Which of the statements given above are correct?

Consider the following statements:

$1$. Radioactivity tracers are commonly used in the medical field and also in the study of plants and animals.

$2$. Radiation is used and produced in nuclear reactors, which controls fission reactions to produce energy and new substances from the fission products.

$3$. Radiation is also used to sterilize medical instruments and food.

Which of the statements given above are correct?

Consider the following statements:

1. Transfer of pollen grain from pollen sac to stigma is called pollination.

2. Anemophily pollination takes place by wind.

3. Entomophily pollination occurs with the help of insects.

Which of the statements given above are correct about pollination?

Consider the following statements:

$1$. Alpha rays emitted from a radioactive substance, are helium nucleus.

$2$. Beta rays emitted by a radioactive substance, charged particles emitted by the nucleus.

$3$. Gamma rays are electromagnetic waves.

$4$. The nuclear force is a short-range force.

Which of the statements given above are correct?

Consider the following statements about smart cards:

1. A smart card is any packet sized card with embedded integrated circuits.

2. Small cards are made up of plastic, generally polyvinyl chloride.

3. Smart cards can provide identification authentication, data storage, and application processing.

Which of the statements given above is/are correct?

Consider the following statements:

$1$. Chlorophyll appears green.

$2$. It absorbs light mainly in the green region of the light spectrum.

Which of the statements given above is/are correct?