Our Environment — Science STD 10 — Question

What will happen if a strip of zinc is immersed in a solution of copper sulphate?

Name a reducing agent that may be used to obtain manganese from manganese dioxide.

Where are hormones made in the human body?

Name the process of asexual reproduction shown by yeast. What type of living being is yeast? What is its commercial importance?

Explain why, two magnetic field lines do not intersect each other.

A student went to study a local pond. In one part of the pond she noticed tadpoles scraping at some pond weed. In another part she saw a water beetle holding a tadpole in its jaws.A student went to study a local pond. In one part of the pond she noticed tadpoles scraping at some pond weed. In another part she saw a water beetle holding a tadpole in its jaws.
Construct a food chain for the pond.
How many links are there in this chain?

If a woman is using a copper-T will it help in protecting her from sexually transmitted diseases?

Write the formula of the functional group present in carboxylic acids.

Can you consider cell division as a type of reproduction in unicellular organism? Give one reason.

Name the major programme started to replenish forests.