Give two example of elements.

एका वाक्यात उत्तर

Example: Hydrogen, Oxygen is made from atoms containing a single proton and a single electron.

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पाठ 3: Matter Around Us - Evaluation [पृष्ठ ३९]

पाठ 3 Matter Around Us
Evaluation | Q V. 9. | पृष्ठ ३९

Give one example for the following type of mixtures
solid-solid homogenous mixture.

Give one example for the following types of mixtures:

liquid-gas homogenous mixture

Name: a Liquid Metal

Name: a Metal Which is a Poor Conductor of Electricity.

Name: a Liquid Non-metal

Answer the following question:
Why are copper and aluminium used to make electric wires?

Tick (√) the correct alternative from the choice given for the following statement.
Brass and bronze are

State what are radicals. Give the names of the radicals –

(a) NO₃
(b) OH
(c) SO₄
(d) CO₃

Give the name of the radical - NO₃

Elements are made up of______ kinds of atoms.