Ecosystems — Science STD 8 — Question

What are balanced forces?

When a substance having mass 2 kg absorbs 2000 cal of heat, its temperature increases by 10 °C. Find the specific heat of the substance.

Which of the following metals react with cold water? Sodium, iron, copper, potassium.

Which staining technique was developed by Camilio Golgi? Where was this technique used?

Liquid element.(Give Two Example)

Name two metals which are good conductors of heat.

Name the reactants in photosynthesis.

The temperature of a body is 283.15 K. Express it in °C and °F.

What are the types of living organisms according to their lifestyle?

Classify the following into homogeneous solution and heterogeneous solution?
Soda water, potassium permanganate solution, milk, alcohol in water, ink solution, wheat flour in water.