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प्रश्न
Complete the statement with the correct words.
_______ are chemicals which are hydroxide (or oxides) of ______ eg. sodium hydroxide.
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उत्तर
Bases – are chemicals which are hydroxide (or oxides) of metals eg. sodium hydroxide.
संबंधित प्रश्न
Tick the most appropriate answer
Solutions are
- heterogeneous mixtures.
- compounds
- homogeneous mixtures.
- elements
Give one example for the following types of mixtures :
solid-liquid heterogenous mixture.
What is meant by 2H and H2
Give one use of the following substance:
Coal
Fill in the blank
The most abundant element in the atmosphere is _______.
Indicate whether the following statement is true or false:
Noble gases are high reactive
The important physical properties of substances are colour, odour, nature, density & solubility in water.
Name - a poisonous gas almost as heavy as air.
Complete the statement with the correct words.
__________ are chemicals formed on reaction of a base with an _____ giving salt and water.
Complete the statement given below by filling in the blank with the correct word.
An element is a pure substance which cannot be broken down by physical or _________ methods.
Give an example of each mixture having the following characteristics. Suggest a suitable method to separate the components of this mixture
Two or more coloured constituents are soluble in some solvent.
