Questions

An atom is the smallest particle of a substance. Chemical substances are divided into two major groups. They are

1. Pure Substances (and)

2. Mixtures.

There are two types of pure substances that are Elements and Compounds.

Elements : An element is a substance that is made up of only one kind of atoms and cannot be broken down into simpler substances by chemical means. Metals and Non- metals come under elements.

Examples of elements are Iron, Silver, Gold, Mercury etc.

Compounds : A Compound is a substance that is formed when two or more elements combine chemically.

Examples of compounds are Water, Carbon dioxide, methane, vinegar etc.

Mixtures : A Mixture is formed when two or more substances mixed together but not chemically combined.

Example: Air.

Oxfam International's is a UK based charity 'Commitment to Reducing Inequality (CRI) Index' ranks India in bottom 12 of its research. India ranks 147 among 157 countries in Inequality Index.

The southern state Telangana decided to make way for electric cars to promote non-polluting vehicles.

The genetic material of HIV consists of two single stranded RNA molecules.

The ore which is found in abundance in India is monazite.

There are 3 stages in cellular respiration. They are:

1. Glycolysis

2. Kreb's cycle

3. Electron transport chain

Here, Glycolysis produces only 2 ATP whereas Kreb's cycle produces no ATP. Electron transport chain of the cellular respiration produces the maximum ATP.

Sepulchral is spelt correctly which means joyless