P-2 Environmental management — Science STD 10 — Question

When calcium carbonate is heated, it decomposes into calcium oxide and oxygen gas.

Substances that can give oxygen to other substances are called particulate matter.

The efficiency of natural gas plant is less than that of thermal power station working on coal.

If a spacecraft has to be sent away from the influence of the earth’s gravitational field, its velocity must be less than the escape velocity.

Nowadays, probiotics are used for treatment of diarrhoea and treatment of poultry.

The simple form of representation of a chemical reaction in words is known as word reaction.

In the electrolytic reduction of alumina, the lining of graphite acts as an anode.

• Right

• Wrong

The electric motor is used to generate electricity.

After fertilization, ovule develops into seed and ovary into fruit.

False -All chromosomes are arranged parallel to the equatorial plane of the cell in metaphase.