P-1 Refraction of light — Science STD 10 — Question

In urochordata, notochord is present throughout the body length.

Aschelminthes have acoelomate and bilaterally symmetrical body.

If the relative humidity is less than 60%, we feel that the air is dry.

Blood plasma contains 90% of water.

Geographical or reproductive isolation leads to speciation.

Latent heat of fusion, Q = mL.

Electrical negativity is the metallic property of an element.

The zig-zag line separates the metals from nonmetals in the periodic table i.e. metals are on the left side and nonmetals are on the right side.

Mendeleev’s periodic table is more useful because it gives information about known and unknown elements.

The SI unit of electric charge is coulomb (C).