P-2 Life Processes in Living Organisms Part – 2 — Science STD 10 — Question

Distinguish between: Human male and Human female reproduction system.

Which contains more carbon-dixoide: exhaled air or inhaled air? Why?

A white chemical compound becomes hard on mixing with proper quantity of water. It is also used in surgery to maintain joints in a fixed position. Name the chemical compound.

Explain the following reactions giving their balanced chemical equations: Electric current is passed through acidulated water.

DEFINE : Green energy:

Explain the following
Chlorine has two isotopes, viz, Cl 35 and C1-37. Their atomic masses are 35 and 37. Their chemical properties are same. Where should these be placed in Mendeleev's periodic table? In different places or in the same place?

Define mass. State its SI and CGS units

What kind of mirror, concave, convex or plane, would be best suited for use in a solar cooker? Why?

If water of mass 60 g and temperature 60 °C is mixed with water of mass 60 g and temperature 40 °C, what will be the maximum temperature of the mixture?

Name the various tools of tracing evolutionary relationships which have been used for studying human evolution.